USER'S MANUAL - Positioning Control Edition
FX3G/FX3U/FX3UC SERIES PROGRAMMABLE CONTROLLERS
Transistor Output
FX3G Main Unit
(Sink Output/
Source Output)
FX3U Main Unit
(Sink Output/
Source Output)
FX3UC Main Unit
(Sink Output/
Source Output)
Line Driver Output
FX3U-2HSY-ADP
Safety Precautions
(Read these precautions before use.)
Before installation, operation, maintenance or inspection of this product, thoroughly read through and
understand this manual and all of the associated manuals. Also, take care to handle the module properly and
safely.
This manual classifies the safety precautions into two categories:
and
.
Indicates that incorrect handling may cause hazardous conditions, resulting in
death or severe injury.
Indicates that incorrect handling may cause hazardous conditions, resulting in
medium or slight personal injury or physical damage.
Depending on the circumstances, procedures indicated by
It is important to follow all precautions for personal safety.
may also cause severe injury.
Store this manual in a safe place so that it can be taken out and read whenever necessary. Always forward it
to the end user.
1. DESIGN PRECAUTIONS
Reference
•
Make sure to have the following safety circuits outside of the PLC to ensure safe system operation
even during external power supply problems or PLC failure.
Otherwise, malfunctions may cause serious accidents.
1) Most importantly, have the following: an emergency stop circuit, a protection circuit, an
interlock circuit for opposite movements (such as normal vs. reverse rotation), and an interlock
circuit (to prevent damage to the equipment at the upper and lower positioning limits).
2) Note that when the PLC CPU detects an error, such as a watchdog timer error, during self-
diagnosis, all outputs are turned off. Also, when an error that cannot be detected by the PLC
CPU occurs in an input/output control block, output control may be disabled.
External circuits and mechanisms should be designed to ensure safe machinery operation in
such a case.
B-4
B-16
B-80
3) Note that when an error occurs in a relay, triac or transistor output device, the output could be
held either on or off.
For output signals that may lead to serious accidents, external circuits and mechanisms should
be designed to ensure safe machinery operation in such a case.
Reference
•
•
Do not bundle the control line together with or lay it close to the main circuit or power line. As a
guideline, lay the control line at least 100mm (3.94") or more away from the main circuit or power
line.
B-4
B-16
B-80
Noise may cause malfunctions.
Install module so that excessive force will not be applied to the built-in programming port, power
connectors, I/O connectors, communication connectors, or communication cables.
Failure to do so may result in wire damage/breakage or PLC failure.
(1)
Safety Precautions
(Read these precautions before use.)
2. WIRING PRECAUTIONS
Reference
•
•
Make sure to cut off all phases of the power supply externally before attempting installation or
wiring work.
Failure to do so may cause electric shock or damage to the product.
Make sure to attach the terminal cover, offered as an accessory, before turning on the power or
initiating operation after installation or wiring work.
B-4
B-32
B-80
Failure to do so may cause electric shock.
Reference
•
•
Connect the AC power supply to the dedicated terminals specified in the manual of the PLC main
unit.
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the
PLC will burn out.
Connect the DC power supply to the dedicated terminals specified in the manual of the PLC main
unit.
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the
PLC will burn out.
•
•
Do not wire vacant terminals externally.
Doing so may damage the product.
Perform class D grounding (grounding resistance: 100Ω or less) to the grounding terminal on the
FX3U/FX3G PLC main unit with a wire 2 mm or thicker.
2
Do not use common grounding with heavy electrical systems (refer to the manual of the PLC main
unit).
•
•
Perform class D grounding (grounding resistance: 100Ω or less) to the grounding terminal on the
main unit.
Do not use common grounding with heavy electrical systems.
When drilling screw holes or wiring, make sure cutting or wire debris does not enter the ventilation
slits.
Failure to do so may cause fire, equipment failures or malfunctions.
Install module so that excessive force will not be applied to I/O connectors.
Failure to do so may result in wire damage/breakage or PLC failure.
Connect input/output cables securely to their designated connectors.
Loose connections may cause malfunctions.
Make sure to properly wire the FX3U/FX3G Series main unit and FX0N/FX2N Series extension
equipment in accordance with the following precautions.
Failure to do so may cause electric shock, a short-circuit, wire breakage, or damage to the
product.
•
•
•
B-4
B-32
B-80
-
-
The disposal size of the cable end should follow the dimensions described in this manual.
•
Tightening torque should be between 0.5 and 0.8 N m.
•
Make sure to properly wire to the European terminal board in accordance with the following
precautions.
Failure to do so may cause electric shock, a short-circuit, wire breakage, or damage to the
product.
-
-
-
-
-
-
The disposal size of the cable end should follow the dimensions described in this manual.
•
Tightening torque should be between 0.22 and 0.25 N m.
Twist the end of strand wire and make sure that there are no loose wires.
Do not solder-plate the electric wire ends.
Do not connect more than the specified number of wires or electric wires of unspecified size.
Affix the electric wires so that neither the terminal block nor the connected parts are directly
stressed.
•
Make sure to properly wire to the FX Series terminal blocks in accordance with the following
precautions.
Failure to do so may cause electric shock, a short-circuit, wire breakage, or damage to the
product.
-
-
The disposal size of the cable end should follow the dimensions described in this manual.
•
Tightening torque should be between 0.5 and 0.8 N m.
(2)
Safety Precautions
(Read these precautions before use.)
3. STARTUP AND MAINTENANCE PRECAUTIONS
Reference
•
•
•
Do not touch any terminal while the PLC's power is on.
Doing so may cause electric shock or malfunctions.
Before cleaning or retightening terminals, cut off all phases of the power supply externally.
Failure to do so may cause electric shock.
Before modifying or disrupting the program in operation or running the PLC, carefully read through
this manual and the associated manuals and ensure the safety of the operation.
An operation error may damage the machinery or cause accidents.
B-5
B-81
Reference
•
Do not disassemble or modify the PLC.
Doing so may cause fire, equipment failures, or malfunctions.
For repair, contact your local Mitsubishi Electric distributor.
•
•
Turn off the power to the PLC before connecting or disconnecting any extension cable.
Failure to do so may cause equipment failures or malfunctions.
Turn off the power to the PLC before attaching or detaching the following devices.
Failure to do so may cause equipment failures or malfunctions.
B-5
B-81
-
-
Peripheral devices, expansion boards, and special adapters
Input/output extension units/blocks and FX Series terminal blocks
4. DISPOSAL PRECAUTIONS
Reference
•
Please contact a certified electronic waste disposal company for the environmentally safe
recycling and disposal of your device.
B-16
5. TRANSPORTATION PRECAUTIONS
Reference
•
•
Before transporting the PLC, turn on the power to the PLC to check that the BATT LED is off.
If the PLC is transported with the BATT LED on or the battery exhausted, the battery-backed data
may be unstable during transportation.
The PLC is a precision instrument. During transportation, avoid impacts larger than those specified
in the general specifications of the PLC main unit manual. Failure to do so may cause failures in
the PLC. After transportation, verify the operations of the PLC.
B-16
(3)
(4)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
FX3G/FX3U/FX3UC Series Programmable
Controllers
User's Manual [Positioning Control Edition]
Manual number
Manual revision
Date
JY997D16801
E
3/2009
Foreword
This manual describes the "positioning" functions of the MELSEC-F FX3G/FX3U/FX3UC Series PLC and
should be read and understood before attempting to install or use the unit.
Store this manual in a safe place so that you can take it out and read it whenever necessary. Always forward
it to the end user.
This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent
licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property
rights which may occur as a result of using the contents noted in this manual.
© 2005 MITSUBISHI ELECTRIC CORPORATION
1
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Outline Precautions
• This manual provides information for the use of the FX3U Series Programmable Controllers. The manual
has been written to be used by trained and competent personnel. The definition of such a person or
persons is as follows;
1) Any engineer who is responsible for the planning, design and construction of automatic equipment
using the product associated with this manual should be of a competent nature, trained and qualified
to the local and national standards required to fulfill that role. These engineers should be fully aware of
all aspects of safety with regards to automated equipment.
2) Any commissioning or service engineer must be of a competent nature, trained and qualified to the
local and national standards required to fulfill that job. These engineers should also be trained in the
use and maintenance of the completed product. This includes being completely familiar with all
associated documentation for the said product. All maintenance should be carried out in accordance
with established safety practices.
3) All operators of the completed equipment should be trained to use that product in a safe and
coordinated manner in compliance to established safety practices. The operators should also be
familiar with documentation which is connected with the actual operation of the completed equipment.
Note: the term 'completed equipment' refers to a third party constructed device which contains or uses
the product associated with this manual
• This product has been manufactured as a general-purpose part for general industries, and has not been
designed or manufactured to be incorporated in a device or system used in purposes related to human life.
• Before using the product for special purposes such as nuclear power, electric power, aerospace, medicine
or passenger movement vehicles, consult with Mitsubishi Electric.
• This product has been manufactured under strict quality control. However when installing the product
where major accidents or losses could occur if the product fails, install appropriate backup or failsafe
functions in the system.
• When combining this product with other products, please confirm the standard and the code, or regulations
with which the user should follow. Moreover, please confirm the compatibility of this product to the system,
machine, and apparatus with which a user is using.
• If in doubt at any stage during the installation of the product, always consult a professional electrical
engineer who is qualified and trained to the local and national standards. If in doubt about the operation or
use, please consult the nearest Mitsubishi Electric distributor.
• Since the examples indicated by this manual, technical bulletin, catalog, etc. are used as a reference,
please use it after confirming the function and safety of the equipment and system. Mitsubishi Electric will
accept no responsibility for actual use of the product based on these illustrative examples.
• This manual content, specification etc. may be changed without a notice for improvement.
• The information in this manual has been carefully checked and is believed to be accurate; however, if you
have noticed a doubtful point, a doubtful error, etc., please contact the nearest Mitsubishi Electric
distributor.
Registration
• Microsoft® and Windows® are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries.
• The company name and the product name to be described in this manual are the registered trademarks or
trademarks of each company.
2
Table of Contents
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
SAFETY PRECAUTIONS..................................................................................................(1)
Functions and Use of This Manual.......................................................................................... 9
Related Manuals...................................................................................................................... 10
1.2 Introduction of Products Needed for Positioning..........................................................................A-4
1.2.1 List of Models ...............................................................................................................................A-4
1.2.2 Main Unit (Transistor Output) .......................................................................................................A-6
1.2.3 Special Adapter ............................................................................................................................A-6
1.2.4 Special Function Unit/Block..........................................................................................................A-7
2.1 FX3U PLC ....................................................................................................................................A-9
2.2 FX3UC PLC................................................................................................................................A-10
2.3 FX3G PLC ..................................................................................................................................A-11
2.4 Individual Operation of Special Function Unit (FX2N-10GM, FX2N-20GM) ...............................A-11
3.1 Comparison of Performance Specifications...............................................................................A-12
High-Speed Output Special Adapter (FX3U-2HSY-ADP)] .....................................................A-12
3.1.2 Pulse Output Special Function Block [FX2N-1PG(-E), FX2N-10PG] ..........................................A-13
3.1.3 Positioning Special Function Block [FX3U-20SSC-H] ................................................................A-14
3.1.4 Positioning Special Function Unit [FX2N-10GM, FX2N-20GM]...................................................A-15
3.2 Comparison of Operation Modes ...............................................................................................A-16
3
Table of Contents
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
1.1 Features.......................................................................................................................................B-3
1.2 Setup Procedure for Positioning Control......................................................................................B-4
1.3 Version Numbers of Compatible PLCs ........................................................................................B-7
1.3.1 Manufacturer's serial number check method................................................................................B-7
1.3.2 Version check...............................................................................................................................B-8
1.3.3 Version upgrade history................................................................................................................B-8
1.4 Version Numbers of Compatible Programming Tools..................................................................B-9
1.5 Assignment of Input/Output Numbers........................................................................................B-10
1.5.1 Assignment of Input Numbers ....................................................................................................B-10
1.5.2 Assignment of Output Numbers .................................................................................................B-12
1.5.3 Connection of High-Speed Output Special Adapter ...................................................................B-14
2.1 General Specifications ...............................................................................................................B-17
2.2 Power Supply Specifications......................................................................................................B-17
2.3 Performance Specifications .......................................................................................................B-18
2.4 Input Specifications....................................................................................................................B-19
2.4.1 FX3U Series main unit (24V DC Input).......................................................................................B-19
2.4.2 FX3UC Series main unit (24V DC Input).....................................................................................B-20
2.4.3 FX3G Series main unit (24V DC Input).......................................................................................B-22
2.5 Output Specifications .................................................................................................................B-23
2.5.1 FX3U Series main unit (Transistor Output).................................................................................B-23
2.5.2 FX3UC Series main unit (Transistor Output)...............................................................................B-25
2.5.3 FX3G Series main unit (Transistor Output).................................................................................B-27
2.5.4 High-Speed Output Special Adapter [FX3U-2HSY-ADP] ...........................................................B-29
2.6 List of Functions.........................................................................................................................B-30
3.1 Terminal Board (M3, M3.5) ........................................................................................................B-33
3.1.1 Terminal Screw Size...................................................................................................................B-33
3.2 European Terminal Board..........................................................................................................B-34
3.2.1 Cable ..........................................................................................................................................B-34
3.2.2 Termination of Cable End...........................................................................................................B-34
3.3.1 Cable Connection To Input/Output Connector ...........................................................................B-35
3.3.2 Setup of Input/Output Connection Connector.............................................................................B-36
4.1 List of Related Devices ..............................................................................................................B-38
4.1.1 Special Auxiliary Relays .............................................................................................................B-38
4.1.2 Special Data Registers...............................................................................................................B-40
4.2 Setting of Various Items Regarding Speeds ..............................................................................B-41
4.2.1 Setting of Various Items Regarding Instructions and Speeds ....................................................B-41
4.2.2 Setting of Output Pulse Frequency (DVIT, PLSV, DRVI, and DRVA Instructions).....................B-43
4.2.3 Setting of Zero Return Speed (DSZR/ZRN Instruction)..............................................................B-44
4.2.4 Setting of Creep Speed (DSZR/ZRN Instruction).......................................................................B-45
4
Table of Contents
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
4.2.5 Setting of Maximum Speed ........................................................................................................B-45
4.2.6 Setting of Bias Speed.................................................................................................................B-46
4.2.7 Setting of Acceleration Time.......................................................................................................B-46
4.2.8 Setting of Deceleration Time ......................................................................................................B-47
4.3 Various Special Relays for Operation Commands.....................................................................B-48
4.3.1 Forward Rotation Limit and Reverse Rotation Limit...................................................................B-48
4.3.2 Immediate Stop of Pulse Output (Pulse Output Stop Command Relay) ....................................B-49
4.3.3 Designation of Zero Return Direction (DSZR/ZRN Instruction)..................................................B-49
4.3.4 CLEAR Signal Output (DSZR/ZRN Instruction)..........................................................................B-51
4.3.5 Change in Logic of Near-Point (DOG) Signal (DSZR Instruction)..............................................B-52
4.3.6 Change in Logic of Zero-Phase Signal (DSZR Instruction)........................................................B-52
4.3.7 Designation of Interrupt Input Signal for DVIT Instruction ..........................................................B-53
4.3.8 Change in Logic of interrupt input Signal (DVIT Instruction) ......................................................B-54
4.3.9 Acceleration/Deceleration by PLSV Instruction..........................................................................B-55
4.4 Current Value and Flag for Monitoring of Operation ..................................................................B-56
4.4.1 Current Value .............................................................................................................................B-56
4.4.2 Completion of Instruction Execution
("Instruction execution complete" Flag, "Instruction execution abnormal end" Flag).............B-57
4.4.3 "Pulse Output Monitor" (BUSY/READY) Flag.............................................................................B-57
4.4.4 "Positioning Instruction Activation" Flag .....................................................................................B-57
4.5 Setting of Various Items on PLC Side........................................................................................B-58
4.5.1 Setting of Common Items Using Program..................................................................................B-58
4.5.2 Setting of High-Speed Output Special Adapter ..........................................................................B-62
4.6 Setting of Various Items on Servo Amplifier (Drive Unit) Side ...................................................B-64
4.6.1 Setting the Command Pulse Method..........................................................................................B-64
4.6.2 Setting of Electronic Gear (For MELSERVO Series)..................................................................B-68
4.6.3 Setting of "Servo Ready" Signal (MELSERVO MR-C Series)....................................................B-69
4.7 Items To Be Observed in Programming.....................................................................................B-70
4.7.1 Positioning Instruction Activation Timing....................................................................................B-70
4.7.2 STOP instruction ........................................................................................................................B-72
4.7.3 Correction of Backlash ...............................................................................................................B-72
4.7.4 "Instruction execution complete" Flag of Positioning Instruction and Completion of PositioningB-72
4.7.5 Operation Error Flag...................................................................................................................B-75
4.7.6 Write during RUN .......................................................................................................................B-75
4.8 Items To Be Observed When Using the Main Unit (Transistor Output) .....................................B-76
4.9 Caution for Using the High-Speed Output Special Adapter (FX3U-2HSY-ADP)........................B-76
4.10 Format and Execution of Applied Instruction ...........................................................................B-78
5.1 Test Procedure...........................................................................................................................B-82
5.2 Creation of Test Program...........................................................................................................B-86
6.1 Types of Mechanical Zero Return Instructions...........................................................................B-88
6.2 DOG Search Zero Return (DSZR Instruction)............................................................................B-89
6.2.1 Instruction Format.......................................................................................................................B-89
6.2.2 List of Related devices ...............................................................................................................B-90
6.2.3 Function and Operation..............................................................................................................B-92
6.2.4 Important Points .........................................................................................................................B-98
6.3 Zero Return (ZRN Instruction)..................................................................................................B-100
6.3.1 Instruction Format.....................................................................................................................B-100
6.3.2 List of Related devices .............................................................................................................B-101
6.3.3 Function and operation.............................................................................................................B-102
6.3.4 Important Points .......................................................................................................................B-106
5
Table of Contents
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
7. Absolute Position Detection System
(Absolute Current Value Read)-ABS Instruction
B-107
7.1 Instruction Format ....................................................................................................................B-107
7.2 List of Related Devices ............................................................................................................B-108
7.3 Function and Operation............................................................................................................B-108
7.4 Initial Zero Return.....................................................................................................................B-109
7.5 Important Points.......................................................................................................................B-110
8.1 Incremental Method and Absolute Method ..............................................................................B-111
8.2 Drive to Increment - DRVI Instruction ......................................................................................B-113
8.2.1 Instruction Format.....................................................................................................................B-113
8.2.2 List of Related Devices.............................................................................................................B-114
8.2.3 Function and Operation............................................................................................................B-116
8.2.4 Important Points .......................................................................................................................B-117
8.3 Drive To Absolute - DRVA Instruction......................................................................................B-118
8.3.1 Instruction Format.....................................................................................................................B-118
8.3.2 List of Related Devices.............................................................................................................B-119
8.3.3 Function and Operation............................................................................................................B-121
8.3.4 Important Points .......................................................................................................................B-122
9.1 Instruction Format ....................................................................................................................B-123
9.2 List of Related Devices ............................................................................................................B-125
9.3 Function and Operation............................................................................................................B-127
9.4 Important Points.......................................................................................................................B-132
10.1 Instruction Format ..................................................................................................................B-134
10.2 List of Related Devices ..........................................................................................................B-135
10.3 Function and Operation..........................................................................................................B-137
10.3.1 Operation without Acceleration/Deceleration (M8338 = OFF)................................................B-137
10.3.2 Operation with Acceleration/Deceleration (M8338 = ON) ......................................................B-138
10.4 Important Points.....................................................................................................................B-140
11.1 Instruction Format ..................................................................................................................B-141
11.2 List of Related Devices ..........................................................................................................B-142
11.3 Function and Operation..........................................................................................................B-144
11.4 Positioning Parameter Setting................................................................................................B-145
11.4.1 Positioning Parameter Setting Using GX Developer ..............................................................B-145
11.4.2 Changing of Set Positioning Parameters (Number of Pulses and Frequency).......................B-151
6
Table of Contents
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
12.1 Input/Output Assignment........................................................................................................B-154
12.2 Programs for Forward/Reverse Rotation (Relay Ladder Program)........................................B-156
12.2.1 Example Program...................................................................................................................B-156
12.3 Programs for Forward/Reverse Rotation (Step Ladder (STL) Program)................................B-159
12.3.1 Example Program...................................................................................................................B-159
12.4 Positioning Using Batch Setting Method................................................................................B-163
12.4.1 Setting Using GX Developer...................................................................................................B-163
12.4.2 Operation Program.................................................................................................................B-165
12.5 Program for Reading Current ABS Value Using ABS Instruction ..........................................B-168
13.1 LED Indicator Lamp Check ....................................................................................................B-169
13.1.1 POWER Indicator Lamp (Statuses: ON, flashing, OFF) [FX3G/FX3U/FX3UC] .....................B-169
13.1.2 RUN Indicator Lamp (Statuses: ON, OFF) [FX3G/FX3U/FX3UC]..........................................B-171
13.1.3 BATT Indicator Lamp (Statuses: ON, OFF) [FX3U/FX3UC]...................................................B-171
13.1.4 ALM Indicator Lamp (Statuses: ON, OFF) [FX3G].................................................................B-171
13.1.5 ERROR indicator lamp (Statuses: ON, flashing, OFF) [FX3G/FX3U/FX3UC] .......................B-171
13.1.6 Pulse Output Destination Device and Rotation Direction Output Indicator Lamp...................B-173
13.2 Error Check............................................................................................................................B-175
13.2.1 Error Code Check Method......................................................................................................B-175
13.2.2 Error Codes ............................................................................................................................B-176
13.3 If the Servo Motor or the Stepping Motor Does Not Operate.................................................B-177
13.4 If Operation Is Stopped at a Wrong Position..........................................................................B-178
7
Table of Contents
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Appendix 1-1 Main Unit (Transistor Output) .........................................................................Apx.-3
Appedix 1-1-1 Sink Input and Sink Output .......................................................................................Apx.-3
Appendix 1-2 High-Speed Output Special Adapter ..............................................................Apx.-6
Appedix 1-2-1 Sink Input, Sink Output (Transistor), and Differential Line Driver Output..................Apx.-6
Appendix 1-3 Absolute Position Detection (Transistor Output) ............................................Apx.-7
Appendix 1-3-1 Sink Input and Sink Output .....................................................................................Apx.-7
Appendix 2-1 Main Unit (Transistor Output) .........................................................................Apx.-9
Appendix 2-1-1 Sink Input and Sink Output .....................................................................................Apx.-9
Appendix 2-2 High-Speed Output Special Adapter ............................................................Apx.-12
Appendix 2-2-1 Sink Input, Sink Output (Transistor), and Differential Line Driver Output..............Apx.-12
Appendix 2-3 Absolute Position Detection (Transistor Output) ..........................................Apx.-13
Appendix 2-3-1 Sink Input and Sink Output ...................................................................................Apx.-13
Appendix 3-1 Main Unit (Transistor Output) .......................................................................Apx.-15
Appendix 3-1-1 Sink Input and Sink Output ...................................................................................Apx.-15
Appendix 3-2 Absolute Position Detection (Transistor Output) ..........................................Apx.-16
Appendix 3-2-1 Sink Input and Sink Output ...................................................................................Apx.-16
Appendix 4-1 Main Unit (Transistor Output) .......................................................................Apx.-17
Appendix 4-1-1 Sink Input and Sink Output ...................................................................................Apx.-17
Appendix 4-2 High-Speed Output Special Adapter ............................................................Apx.-20
Appendix 4-2-1 Sink Input, Sink Output, and Differential Line Driver Output.................................Apx.-20
Revised History......................................................................................................................... ii
8
Functions and Use of This Manual
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Functions and Use of This Manual
The FX3G/FX3U/FX3UC PLC outputs transistor signals from the main unit and also outputs pulses from the
high-speed output adapter and the positioning special function unit/block to the servo motor and stepping
motor to properly control positioning operations.
PLC
FX3G/FX3U Series
FX3UC Series
Regarding wiring and installation of PLC:
Enclosed with
the product
• Hardware manual
(The hardware manual is enclosed with the product.)
• User's Manual - Hardware Edition
Separate
document
Regarding sequence program:
• Programming manual
Separate
document
Regarding positioning function:
Separate
document
• FX3G/FX3U/FX3UC Series PLC
User's Manual- Positioning Control Edtion
This document describes the built-in positioning function
setting method, examples of connection, examples of programs, details
for troubleshooting, etc.
This
document
Products needed for positioning
FX3U-2HSY-ADP
Either "INSTALLATION MANUAL" or "USER'S MANUAL" is
enclosed with each product.
For the details, refer to User's Manual [Positioning Control]
(this document) or the product manual.
Regarding installation and parts names:
• INSTALLATION MANUAL
Enclosed with
the product
Special function unit/block
This manual provides the necessary information.
A separate document is needed for programming
details.
POWE
RERRO
R
STAR
T
DO
PG
FO
PR
CPL
R
GX
X
1
FX2N-10PG
f
f
A
B
Regarding installation, parts names, operation, and programs:
• USER'S MANUAL
This manual provides the
necessary information.
Supplied with
the product
Separate
document
Separate
document
• HARDWARE/PROGRAMMING MANUAL
This manual provides the necessary information.
Servo motor (stepping motor)
Obtain the instruction manual of the servo motor to be connected to your system.
This manual will be needed to set the parameters for the servo amplifier (drive
unit) or wire the servo amplifier.
9
Related Manuals
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Related Manuals
Refer to this document to perform positioning operations with the FX3G/FX3U/FX3UC Series PLC.
For hardware information on the PLC and for details on the special function units/blocks, refer to the
respective manuals.
ꢀIndispensable manual
3Manual that may be indispensable
depending on the purpose of use
ꢀAbbreriated document
Document
number
Title of manual
Description
Model code
Manuals for PLC
„FX3G Series PLC
The input/output specifications and the
wiring and installation methods for the
FX3G PLC are excerpted from the FX3G
Series User’s Manual - Hardware Edition.
For details, refer to the FX3G Series
User’s Manual - Hardware Edition.
Enclosed
with the
product
FX3G Series
HARDWARE MANUAL
ꢀ
JY997D33401
-
Provides detailed information on the
hardware, such as the input/output
JY997D31301 specifications and the detailed wiring,
installation, and maintenance methods
for the FX3G PLC.
FX3G Series
User’s Manual -
Hardware Edition
Separate
document
ꢀ
09R521
„FX3U Series PLC
The input/output specifications and the
wiring and installation methods for the
FX3U PLC are excerpted from the FX3U
Series User’s Manual - Hardware Edition.
For details, refer to the FX3U Series
User’s Manual - Hardware Edition.
Enclosed
with the
product
FX3U Series
HARDWARE MANUAL
ꢀ
JY997D18801
-
Provides detailed information on the
hardware, such as the input/output
JY997D16501 specifications and the detailed wiring,
installation, and maintenance methods
for the FX3U PLC.
FX3U Series
User’s Manual -
Hardware Edition
Separate
document
ꢀ
09R516
„FX3UC Series PLC
The input/output specifications and the
wiring and installation methods for the
FX3UC(D,DSS) PLC are excerpted from
JY997D28601 the FX3UC Series User's Manual -
Hardware Edition.
Enclosed
with the
product
FX3UC(D,DSS) Series
HARDWARE MANUAL
ꢀ
-
For details, refer to the FX3UC Series
User's Manual - Hardware Edition.
The input/output specifications and the
wiring and installation methods for the
FX3UC-32MT-LT-2 PLC are excerpted
JY997D31601 from the FX3UC Series User's Manual -
Hardware Edition.
Enclosed
with the
product
FX3UC-32MT-LT-2
HARDWARE MANUAL
ꢀ
-
For details, refer to the FX3UC Series
User's Manual - Hardware Edition.
Provides detailed information on the
hardware, such as the input/output
JY997D28701 specifications and the detailed wiring,
installation, and maintenance methods
for the FX3UC PLC.
FX3UC Series
User’s Manual -
Hardware Edition
Separate
document
ꢀ
09R519
10
Related Manuals
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
ꢀIndispensable manual
3Manual that may be indispensable
depending on the purpose of use
ꢀAbbreriated document
Document
Title of manual
Description
Model code
number
„Programming
FX3G/FX3U/FX3UC
Series Programming
Describes the basic instructions, applied
instructions, and various devices of the
Separate
document
ꢀ
Manual - Basic &
Application Instruction
Edition
JY997D16601 FX3G/FX3U/FX3UC PLC to provide
detailed information on sequence
programming.
09R517
09R620
Manuals for positioning control
„Common
FX3G/FX3U/FX3UC
Provides detailed information on the
JY997D16801 positioning functions incorporated in the
FX3G/FX3U/FX3UC Series.
Separate Series User’s Manual -
document Positioning Control
Edition (this document)
3
„Pulse output, positioning
To use each product, also refer to the user's manual (for hardware) of the PLC to be connected to your system.
Describes how to handle the high-speed
Enclosed
with the
product
output special adapter.
JY997D16401 To use this adapter, also refer to the
User's Manual for FX3G/FX3U/FX3UC
Series (for positioning control).
FX3U-2HSY-ADP
Installation Manual
ꢀ
-
Enclosed
with the
product
Describes how to handle the 1-axis pulse
JY992D65301
FX2N/FX-1PG
User's Manual
3
09R610
output special function block.
Describes how to handle the 1-axis pulse
output special function block.
To use this block, also refer to FX2N-
10PG USER’S MANUAL.
Enclosed
with the
product
FX2N-10PG
Installation Manual
ꢀ
JY992D91901
-
Separate FX2N-10PG
document User's Manual
Provides detailed information on the 1-
JY992D93401
3
09R611
axis pulse output special function block.
Describes how to handle the 1-axis
positioning special function unit.
JY992D77701 To use this unit, also refer to FX2N-
10GM/FX2N-20GM HARDWARE/
Enclosed
FX2N-10GM
with the
ꢀ
ꢀ
-
-
User's Guide
product
PROGRAMMING MANUAL.
Describes how to handle the 2-axis
positioning special function unit.
JY992D77601 To use this unit, also refer to FX2N-
10GM/FX2N-20GM HARDWARE/
Enclosed
FX2N-20GM
with the
User's Guide
product
PROGRAMMING MANUAL.
FX2N-10GM/FX2N-20GM
Provides detailed information on the 1-
JY992D77801 axis/2-axis positioning special function
unit.
HARDWARE/
PROGRAMMING
MANUAL
Separate
document
3
3
09R612
09R609
Enclosed
with the
product
FX-PCS-VPS/WIN
SOFTWARE MANUAL
Describes operation details of FX-PCS-
JY992D86801
VPS/WIN Setting/Monitoring Tool.
Describes FX3U-20SSC-H positioning
block specification for I/O, power supply
Enclosed
with the
product
FX3U-20SSC-H
Installation Manual
extracted from the FX3U-20SSC-H User’s
ꢀ
JY997D21101
Manual.
-
For details, refer to FX3U-20SSC-H
User's Manual.
Separate FX3U-20SSC-H
document User's Manual
Describes FX3U-20SSC-H Positioning
3
3
JY997D21301
block details.
09R622
09R916
Separate FX Configurator-FP
document Operation Manual
Describes operation details of FX
JY997D21801
Configurator-FP Setting/Monitoring Tool.
11
Generic Names and Abbreviations Used in Manuals
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Generic Names and Abbreviations Used in Manuals
Generic name or
abbreviation
Description
PLC
FX3G series
FX3G PLC or main unit
FX3U series
FX3U PLC or main unit
FX3UC series
Generic name for FX3G Series PLC
Generic name for FX3G Series PLC main unit
Generic name for FX3U Series PLC
Generic name for FX3U Series PLC main unit
Generic name for FX3UC Series PLC
FX3UC PLC or main unit Generic name for FX3UC Series PLC main unit
FX2N Series
Generic name for FX2N Series PLC
Generic name for FX2NC Series PLC
FX2NC Series
Expansion board
Generic name for expansion board
The number of connectable units, however, depends on the type of main unit.
To check the number of connectable units, refer to the User's Manual - Hardware
Editon of the main unit to be used for your system.
Expansion board
Special adapter
Generic name for high-speed input/output special adapter, communication special
adapter, and analog special adapter
Special adapter
The number of connectable units, however, depends on the type of main unit.
To check the number of connectable units, refer to the User's Manual - Hardware
Editon of the main unit to be used for your system.
High-speed input/output
special adapter
Generic name for high-speed input/output special adapter
High-speed output special
adapter
Generic name for high-speed output special adapter
FX3U-2HSY-ADP
2HSY-ADP
High-speed input special
adapter
Generic name for high-speed input special adapter
Communication special
adapter
Generic name for communication special adapter
Generic name for analog special adapter
Analog special adapter
Extension unit
Generic name for input/output extension unit and special extension unit
The number of connectable units, however, depends on the type of main unit.
To check the number of connectable units, refer to the User's Manual - Hardware
Editon of the main unit to be used for your system.
Extension unit
Generic name for input extension unit and output extension unit
The number of connectable units, however, depends on the type of main unit.
To check the number of connectable units, refer to the User's Manual - Hardware
Editon of the main unit to be used for your system.
Input/output extension unit
Generic name for FX2N Series input/output powered extension unit, input extension
block, FX2NC Series input extension block, and FX0N Series input extension block
The number of connectable units, however, depends on the type of main unit.
To check the number of connectable units, refer to the User's Manual - Hardware
Editon of the main unit to be used for your system.
Input extension unit
Output extension unit
Generic name for FX2N Series input/output powered extension unit, output extension
block, FX2NC Series output extension block, and FX0N Series output extension block
The number of connectable units, however, depends on the type of main unit.
To check the number of connectable units, refer to the User's Manual - Hardware
Editon of the main unit to be used for your system.
12
Generic Names and Abbreviations Used in Manuals
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Generic name or
abbreviation
Description
Extension unit
Generic name for special function unit and special function block
Special function unit/block or The number of connectable units, however, depends on the type of main unit.
Special extension unit
To check the number of connectable units, refer to the User's Manual - Hardware
Edition of the main unit to be used for your system.
Special function unit
Generic name for special function unit
Generic name for special function block
The number of connectable units, however, depends on the type of main unit.
To check the number of connectable units, refer to the User's Manual - Hardware
Edition of the main unit to be used for your system.
Special function block
Positioning special
function unit
Generic name for the following models:
FX2N-10GM, FX2N-20GM
Positioning special
function block
Generic name for the following models:
FX3U-20SSC-H
Pulse output special
function block
Generic name for the following models:
FX2N-1PG-E, FX2N-1PG, FX2N-10PG
Generic name for the following models:
FX2N-1PG-E, FX2N-1PG
FX2N-1PG(-E)
Optional unit
Extension power supply unit FX3UC-1PS-5V(for FX3UC series), FX3U-1PSU-5V(for FX3G/FX3U series)
Memory cassette
Battery
FX3G-EEPROM-32L, FX3U-FLROM-16, FX3U-FLROM-64, FX3U-FLROM-64L
FX3U-32BL
FX-16E-TB, FX-32E-TB, FX-16EX-A1-TB, FX16EYR-TB, FX-16EYS-TB,
FX-16EYT-TB
FX Series terminal block
FX-16E-500CAB-S, FX-16E-ꢁꢁꢁCAB, FX-32E-ꢁꢁꢁCAB, FX-16E-ꢁꢁꢁCAB-R,
FX-A32E-ꢁꢁꢁCAB
Input/output cable
ꢁꢁꢁ represents 150, 300, or 500.
Input/output connector
Power cable
FX2C-I/O-CON, FX2C-I/O-CON-S, FX2C-I/O-CON-SA
FX2NC-100MPCB, FX2NC-100BPCB, FX2NC-10BPCB1
Peripheral unit
Peripheral unit
Generic name for programming software, handy programming panel, and HMI
Programming tool
Programming tool
Programming software
Generic name for programming software and handy programming panel
Generic name for programming software
Generic name for SWꢁD5C-GPPW-J/SWꢁD5C-GPPW-E programming software
package
GX Developer
FX-PCS/WIN(-E)
Generic name for FX-PCS/WIN or FX-PCS/WIN-E programming software package
Handy programming panel
(HPP)
Generic name for FX-30P FX-20P(-E) and FX-10P(-E)
,
Setting/Monitoring Tool
Setting/monitoring tool
FX Configurator-FP
Generic name for setting/monitoring tool
Generic name for SWꢁD5C-FXSSC-J/SWꢁD5C-FXSSC-E Setting/monitoring tool
Generic name for FX-PCS-VPS/WIN or FX-PCS-VPS/WIN-E Positioning module
software package for the FX2N-10GM and FX2N-20GM
FX-PCS-VPS/WIN(-E)
HMI
GOT1000 series
GOT-900 series
GOT-A900 series
GOT-F900 series
Generic name for GT15, GT11 and GT10
Generic name for GOT-A900 series and GOT-F900 series
Generic name for GOT-A900 series
Generic name for GOT-F900 series
Generic name for ET-940 series
Only manuals in Japanese are available for these products
ET-940 series
13
Generic Names and Abbreviations Used in Manuals
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Generic name or
abbreviation
Description
Drive unit for servo motor and stepping motor
Generic name for servo motor or stepping motor
Including pulse input type servo amplifier and drive unit.
Servo motor
Servo amplifier (drive unit)
MELSERVO series
Other unit
Generic name for pulse input type servo amplifier (drive unit)
Generic name for MELSERVO-J3, -J2-Super, -J2, -H, and -C series
Manual pulse generator
Manual
Generic name for manual pulse generator (prepared by user)
FX3G Hardware Edition
FX3U Hardware Edition
FX3UC Hardware Edition
FX3G Series User's Manual - Hardware Edition
FX3U Series User's Manual - Hardware Edition
FX3UC Series User's Manual - Hardware Edition
FX3G/FX3U/FX3UC Series Programming Manual - Basic and Applied Instructions
Edition
Programming manual
Communication Control
Edition
FX Series User's Manual - Data Communication Edition
Analog Control Edition
FX3G/FX3U/FX3UC Series User's Manual - Analog Control Edition
FX3G/FX3U/FX3UC Series User's Manual - Positioning Control Edition
Positioning Control Edition
14
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
A
B
FX3G/FX3U/FX3UC Series Programmable
Controllers
Apx.
User’s Manual [Positioning Control Edition]
A. Common Items
Foreword
"Common Items" describes an outline of the "positioning" functions incorporated in the MELSEC-F FX3G/
FX3U/FX3UC Series PLC and should be read and understood before attempting to install or use the unit.
Store this manual in a safe place so that you can take it out and read it whenever necessary. Always forward
it to the end user.
This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent
licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property
rights which may occur as a result of using the contents noted in this manual.
© 2005 MITSUBISHI ELECTRIC CORPORATION
A - 1
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
Description of Manual (Common Items)
In this manual, the following formats are used for describing the common items:
Indexes the title of
division.
The right side of each
page indexes the title
of the division for the
current page.
Shows the title of the chapter
and the title of the section.
This area shows the title of the
chapter and the title of the
section for the current page.
Shows the title of the manual and the title
of the division.
This area shows the title of the manual and the title
of the division for the current page.
1st line: Shows the title of the manual.
2nd line: Shows the title of the division.
Shows the reference.
This area shows the
reference document
(the reference document is
shown next to " ").
If the reference is in
"A. Common items"
division, only the chapter,
section, or subsection
number only will be shown
next to " ".
If the reference is in
another division, the chapter,
section, or subsection
number will be shown
next to " " together with
the title of the division.
The above is different from the actual page, as it is provided for explanation only.
A - 2
1 Introduction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
1.1 Outline
A
B
1. Introduction
This manual describes the positioning control for the FX3G/FX3U/FX3UC PLC.
In this chapter, a brief description of the positioning products is provided.
1.1
Outline
The FX3G/FX3U/FX3UC PLC outputs the pulse signal to the servo motor and the stepping motor to control the
positioning operation.
Apx.
Increase the pulse frequency to increase the motor speed. Increase the number of pulses to increase the
number of motor revolutions. In other words, set the pulse frequency to determine the workpiece transfer
(positioning) speed.
Set the number of pulses to determine the workpiece transfer distance.
Servo motor or
stepping motor
FX3G/FX3U/FX3UC PLC
Pulse train signal
Pulse frequency
: Transfer speed
Number of
: Transfer distance
pulses
Positioning command
Workpiece (item to be positioned)
A - 3
1 Introduction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
1.2 Introduction of Products Needed for Positioning
1.2
Introduction of Products Needed for Positioning
To control the positioning operation, use the positioning functions incorporated in the main unit (including the
special adapters), and the special functions units/blocks. The functions, however, depend on the product(s)
being used. Select the optimum product(s) for the purpose of use.
1.2.1 List of Models
The products needed for positioning are shown in the following table:
1. Main unit (transistor output) and special adapter
Frequency
Number of
axes
Output
system
Model
Unit
Output method
Reference
*1
(Hz)
Main unit (transistor output)
Open
collector
system
B. Built-in
Positioning
Function
FX3U/FX3UC
PLC
3-axes
(independent)
"Pulse train + direction"
method
*5
pulse
pulse
10 to 100,000
Open
collector
system
B. Built-in
Positioning
Function
*3
"Pulse train + direction"
method
3-axes
*5
FX3G PLC
10 to 100,000
(independent)
Special adapter
FX3U-2HSY
"Pulse train + direction"
method or "forward/
reverse rotation pulse
train" method
Differential
line driver
system
B. Built-in
Positioning
Function
*4
2-axes
*5
pulse
10 to 200,000
*2
-ADP
(independent)
*1. Do not exceed the maximum rotation speed of the servo motor or the stepping motor.
*2. Can only be connected to the FX3U PLC.
*3. "2-axes (independent)" in 14-point and 24-point type main units.
*4. Connection of 1 adapter can control 2 axes. Connection of 2 adapters can control up to 4 axes.
*5. The minimum frequency set by the PLSY instruction or PLSV instruction is "1 Hz".
→ For details on the PLSY instruction, refer to the programming manual.
A - 4
1 Introduction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
1.2 Introduction of Products Needed for Positioning
A
B
*2
2. Special function block/unit
Frequency
Number of
axes
Output
Model
Unit
Output method
system
*1
(Hz)
Special function block
pulse
Open
collector
system
"Pulse train + direction" method or
"forward/reverse rotation pulse train"
method
µm
FX2N-1PG(-E)
1-axis
1-axis
10 to 100,000
1 to 1,000,000
-4
10 inch
mdeg
pulse
Differential
line driver
system
"Pulse train + direction" method or
"forward/reverse rotation pulse train"
method
µm
FX2N-10PG
-4
Apx.
10 inch
mdeg
pulse
2-axes
µm
FX3U-20SSC-H (independent/ 1 to 50,000,000
interpolation)
SSCNET III
-4
10 inch
mdeg
Special function unit
pulse
Open
collector
system
"Pulse train + direction" method or
"forward/reverse rotation pulse train"
method
µm
FX2N-10GM
FX2N-20GM
1-axis
1 to 200,000
1 to 200,000
-4
10 inch
mdeg
pulse
2-axes
(independent/
interpolation)
Open
collector
system
"Pulse train + direction" method or
"forward/reverse rotation pulse train"
method
µm
-4
10 inch
mdeg
*1. Do not exceed the maximum rotation speed of the servo motor or the stepping motor.
*2. Only FX3U and FX3UC PLC can be connected to the above models.
Refer to the manual of each product.
A - 5
1 Introduction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
1.2 Introduction of Products Needed for Positioning
1.2.2 Main Unit (Transistor Output)
The FX3G/FX3U/FX3UC PLC incorporates positioning functionality.
The PLC can output an open collector type pulse train of up to 100 kHz from the general-purpose outputs
(Y000 to Y002), and it can simultaneously control 3 axes*1.
1-axis
2-axes
3-axes
3G/FX3U/FX3UC PLC
FX
(Transistor output)
Servo motor
(Servo amplifier)
Servo motor
(Servo amplifier)
Servo motor
(Servo amplifier)
Y001
+
Direction
signal
Y002
Y000
+
+
Direction
signal
Direction
signal
*1. 14-point and 24-point type FX3G PLC can only control 2 axes.
1.2.3 Special Adapter
The special adapter can output differential line driver type pulse trains of up to 200 kHz using the positioning
functionality incorporated in the FX3U PLC, and can simultaneously control up to 4 axes.
Up to 2 high-speed output special adapters (FX3U-2HSY-ADP) can be connected to the FX3U PLC.
• The first FX3U-2HSY-ADP uses Y000 and Y004, and Y001 and Y005.
• The second FX3U-2HSY-ADP uses Y002 and Y006, and Y003 and Y007.
FX3U-2HSY-ADP
FX3U PLC
2nd
1st
1-axis
2-axes
3-axes
4-axes
Servo motor
(Servo amplifier)
Servo motor
(Servo amplifier)
Servo motor
(Servo amplifier)
Servo motor
(Servo amplifier)
Y000
+
Y004
Y001
Y002
Y003
+
+
+
Y005
Y006
Y007
A - 6
1 Introduction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
1.2 Introduction of Products Needed for Positioning
A
B
Cautions when connecting special adapters
• To use high-speed input/output special adapters only (not to use the other special adapters), it is not
necessary to connect the expansion board.
• To use the analog and communication special adapters, be sure to connect the expansion board.
• To use high-speed input/output special adapters together with the analog and/or communication special
adapters, connect the high-speed output special adapters to the expansion board (already connected to
the FX3U PLC) first, and then connect the analog special adapters and/or the communication special
adapter(s).
Analog special adapter
Communication special adapter
High-speed output
special adapter
Expansion board
FX3U PLC
Apx.
R
D
A
RD
SD
R
D
B
A
SD
SD
B
SG
1.2.4 Special Function Unit/Block
Connect a special function unit/block to the FX3U/FX3UC PLC to control positioning operations. Note that a
special function unit can individually control positioning operations.
1. System configuration for FX3U PLC
Up to 8 special function units/blocks can be connected to the FX3U PLC.
Special function block
Special function unit
Servo motor
(Servo amplifier)
FX3U PLC
POWE
RERRO
R
STAR
T
DO
PG
FO
PR
PCL
R
G
X
1
FX2N-10PG
f
A
B
No.0
No.7
to
Up to 8 units
→ For details on system configuration, refer to the FX3U Hardware Edition.
2. System configuration for FX3UC PLC
Up to 8*1 special function units/blocks can be connected to the FX3UC PLC.
FX2NC-CNV-IF or FX3UC-1PS-5V is needed to connect special function units/blocks.
FX3UC-1PS-5V
or
FX2NC-CNV-IF
Servo motor
(Servo amplifier)
Special function block
Special function unit
FX3UC PLC
P
E
O
WE
R
RRO
R
S
T
A
RT
DO
G
P
G
O
X
X
f
0
1
FP
RP
CL
FX 2N -10PG
A
B
R
f
*2
No.0
No.7
to
Up to 8 units
*1. Up to 7 special function units/blocks can be connected to the FX3UC-32MT-LT(-2) PLC.
*2. The unit/block number begins with "No. 1" when special function unit/blocks are connected to the
FX3UC-32MT-LT(-2) PLC.
→ For details on system configuration, refer to the FX3UC Hardware Edition.
A - 7
1 Introduction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
1.2 Introduction of Products Needed for Positioning
3. Individual operation (FX2N-10GM, FX2N-20GM)
Without connecting special function units (FX2N-10GM, FX2N-20GM) to the PLC, you can operate them
individually.
• FX2N-10GM can control one 1-axis servo motor or stepping motor.
• FX2N-20GM can control two 1-axis servo motors or stepping motors.
In addition, up to 48 I/O points can be added.
1-axis
1-axis
2-axes
FX2N-10GM
FX2N-20GM
Servo motor
(Servo amplifier)
Servo motor
(Servo amplifier)
Servo motor
(Servo amplifier)
A - 8
2 Unit Connection
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
2.1 FX3U PLC
A
B
2. Unit Connection
This chapter displays several block diagrams to illustrate the various combinations of units needed for
positioning control.
2.1
FX3U PLC
FX3U Series
Apx.
A and B show the unit positions.
(For details of installation, refer to the manuals of special adapter and
special function units/blocks.)
A
B
Terminal block (M3)
Servo motor or
Stepping motor*3
(Transistor output)*1
A
European terminal
board
FX3U-2HSY-ADP
P
O
W
E
R
E
RRO
R
B
START
DO
G
P
G
O
X
0
FP
RP
CL
X
1
A
B
FX2N-10PG
f
f
R
- Terminal board (M3)*2
- MIL connector (20-pin)*2
- SSCNET dedicated
connector*2
Special function block
Special function unit
*1. The relay output type PLCs do not have pulse output.
*2. The product connects with the servo amplifier via the terminal block, MIL connector (20 pins), or the
SSCNET dedicated connector.
*3. FX3U-20SSC-H only connects with the servo amplifier (MR-J3B) applicable to SSCNET III.
Note:
• For details on the connectable special function units/blocks and system configuration, refer to the following
manual.
→ Refer to the FX3U Hardware Edition.
A - 9
2 Unit Connection
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
2.2 FX3UC PLC
2.2
FX3UC PLC
FX3UC Series
and
show the unit positions.
B
C
C
B
(For installation details, refer to the manuals of the special adapter and
special function units/blocks.)
Servo motor or
MIL connector (20-pin)
Stepping motor*2
C
B
P
ERRO
O
W
E
R
R
FX3UC-1PS-5V
C
START
DO
G
P
G
O
X
0
FP
RP
CL
X
1
A
B
FX2N-10PG
f
f
R
- Terminal board (M3)*1
- MIL connector (20-pin)*1
- SSCNET dedicated
connector*1
Special function
block
Special function
unit
FX2NC-CNV-IF
*1. The product connects with the servo amplifier via the terminal block, MIL connector (20 pins), or the
SSCNET dedicated connector.
*2. FX3U-20SSC-H only connects with the servo amplifier (MR-J3B) applicable to SSCNET III.
*3. Up to 7 special function units/blocks can be connected to the FX3UC-32MT-LT(-2) PLC.
Note:
• Use the FX3UC-1PS-5V (extension power supply unit) only if the 5V DC power supply unit incorporated in
the FX3UC PLC does not have enough capacity.
→ Refer to the FX3UC Hardware Edition.
• For details on the connectable special extension blocks and system configuration, refer to the following
manual.
→ Refer to the FX3UC Hardware Edition.
A - 10
2 Unit Connection
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
2.3 FX3G PLC
A
B
2.3
FX3G PLC
FX3G Series (40-point, 60-point type)
Servo motor or
Stepping motor
Terminal board (M3)
Transistor output (Y000 to Y002)*1
Apx.
FX3G Series (14-point, 24-point type)
Terminal board (M3)
Transistor output (Y000, Y001)*1
*1. The relay output type PLCs do not have pulse output.
2.4
Individual Operation of Special Function Unit (FX2N-10GM, FX2N-20GM)
Servo motor or
Stepping motor
MIL connector (20-pin)
FX2N-10GM
MIL connector (20-pin)
FX2N-20GM
Note:
• For details on the connection of the FX2N-10GM or FX2N-20GM and for system configuration, refer to the
following manual.
→ Refer to FX2N-10GM, FX2N-20GM HARDWARE/PROGRAMMING MANUAL.
A - 11
3 Comparison of Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
3.1 Comparison of Performance Specifications
3. Comparison of Specifications
The specifications for each product with positioning functionality are shown below.
3.1
Comparison of Performance Specifications
3.1.1 Built-in Positioning Function [Main Unit (Transistor Output),
High-Speed Output Special Adapter (FX3U-2HSY-ADP)]
FX3G/FX3U/FX3UC PLC
Model
*2
FX3U-2HSY-ADP
(Main unit, transistor output)
2 independent axes
(Connect 2 adapters to the main unit to control
4 axes independently.)
Number of control
*1
3 independent axes
axes
Interpolation
-
-
Pulse output
system
Open collector system
Differential line driver system
Pulse output
method
"Pulse train + direction" method
"Forward/reverse rotation pulse train" method
"Pulse train + direction" method
100,000Hz
Maximum
200,000Hz
*3
frequency
Acceleration
/deceleration type
Automatic trapezoidal acceleration/deceleration
Unit
pulse
Positioning range
Program language
Position data
-999,999 to +999,999 (pulse)
Sequence program
1 point (set in sequence program)
Connection of
manual pulse
generator
-
-
Detection of
absolute position
(Reads out the cur-
rent value of ABS.)
ABS instruction of the PLC
•
•
•
To be used when a servo amplifier with a
differential line receiver method is
connected.
To be used when positioning control is
performed with a FX3U Series relay output
type main unit.
•
Pulses can be output from the general-
purpose outputs (Y000, Y001, and Y002) of
the main unit.
Others
Used in place of the general-purpose
*4
outputs (Y000 to Y007) of the main unit.
*1. 2 independent axes in 14-point and 24-point type FX3G PLC.
*2. Can only be connected to the FX3U PLC. Up to 2 adapters can be connected.
*3. Do not exceed the maximum rotation speed of the servo motor or the stepping motor.
*4. If 2 adapters are connected, Y000 to Y007 will be used. If only one adapter is connected, Y000, Y001,
Y004, and Y005 will be used. The relation between the output of the FX3U-2HSY-ADP and the output
of main unit is described in the following sections.
→ For high-speed output special adapters, refer to Subsection 1.5.3 and Section 4.9 of
"B. Built-in Positioning Function."
A - 12
3 Comparison of Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
3.1 Comparison of Performance Specifications
A
B
3.1.2 Pulse Output Special Function Block [FX2N-1PG(-E), FX2N-10PG]
Model
FX2N-1PG(-E)
FX2N-10PG
Number of control
axes
1 independent axis
Interpolation
-
-
Pulse output
system
Open collector system
Differential line driver system
Pulse output
method
"Pulse train + direction" method
"Forward/reverse rotation pulse train" method
Apx.
Maximum
100,000Hz
1,000,000Hz
*1
frequency
Automatic trapezoidal
acceleration/deceleration, approximate
S-pattern acceleration/deceleration
Acceleration/decel-
eration type
Automatic trapezoidal
acceleration/deceleration
-4
Unit
pulse, µm, 10 inch, mdeg
-999,999 to +999,999 [× (Position data magnifi-
-2,147,483,648 to +2,147,483,647 pulse
*2
cation ) pulse]
-2,147,483,648 to +2,147,483,647 [× (Position
-999,999 to +999,999 [× (Position data magnifi-
*2
*3
data magnification ) µm]
-2,147,483,648 to +2,147,483,647 [× (Position
*2
cation ) µm]
Positioning range
-999,999 to +999,999 [× (Position data magnifi-
*2
-4
*3
data magnification ) ×10 inch]
*2
-4
cation ) ×10 inch]
-2,147,483,648 to +2,147,483,647 [× (Position
-999,999 to +999,999 [× (Position data magnifi-
*2
*3
data magnification ) mdeg]
*2
cation ) mdeg]
Program language
Position data
Sequence program (FROM/TO instruction, BFM direct designation)
*4
1 point (set in sequence program)
1 point (set in sequence program)
Connection of
manual pulse
generator
Connectable
(Differential line driver, open collector)
-
Detection of
absolute position
(Reads out the cur-
rent value of ABS.)
Using the ABS instruction of the PLC
•
•
•
PLC input/output: 8 points occupied
(Points can be either input or output points.)
From the dedicated start, the high-speed
start by 1 ms at shortest is enabled.
During positioning operation, the operation
speed can be changed.
•
PLC input/output: 8 points occupied
(Points can be either input or output points.)
Others
*1. Do not exceed the maximum rotation speed of the servo motor or the stepping motor.
*2. The position data magnification sets the 1, 10,102 or 103 in parameters.
*3. The positioning range can be set in the range from -2,147,483,648 to +2,147,483,647 pulses.
*4. Up to 200 points (table) can be set for the table operation.
A - 13
3 Comparison of Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
3.1 Comparison of Performance Specifications
3.1.3 Positioning Special Function Block [FX3U-20SSC-H]
Model
FX3U-20SSC-H
2 independent/simultaneous axes
Number of control
axes
Interpolation
2-axes linear interpolation, 2-axes circular interpolation
Pulse output
system
SSCNET III
Pulse output
method
Maximum
50,000,000Hz
*1
frequency
Acceleration/
deceleration type
Automatic trapezoidal acceleration/deceleration,
approximate S-pattern acceleration/deceleration
-4
Unit
pulse, µm, 10 inch, mdeg
-2,147,483,648 to +2,147,483,647 pulse
*2
*3
-2,147,483,648 to +2,147,483,647 [× (Position data magnification ) µm]
Positioning range
*2
-4
*3
-2,147,483,648 to +2,147,483,647 [× (Position data magnification ) ×10 inch]
*2
*3
-2,147,483,648 to +2,147,483,647 [× (Position data magnification ) mdeg]
*4
Program language
Position data
Sequence program (FROM/TO instruction, BFM direct designation)
*5
1 point (set in sequence program)
Connection of
manual pulse
generator
Connectable (Differential line driver)
Set in parameters
Detection of
absolute position
(Reads out the
current value of
ABS.)
•
•
PLC input/output: 8 points occupied
(Points can be either input or output points.)
During positioning operation, the operation speed and/or target address can be changed.
Others
*1. Do not exceed the maximum rotation speed of the servo motor.
*2. The position data magnification sets the 1, 10,102 or 103 in parameters.
*3. The positioning range can be set in the range from -2,147,483,648 to +2,147,483,647 pulses.
*4. The set data (table information) of the table operation can be set up with FX Configurator-FP Setting/
monitor tool.
*5. Up to 300 points (table) can be set for the table operation of the X-/Y-/XY-axis.
A - 14
3 Comparison of Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
3.1 Comparison of Performance Specifications
A
B
3.1.4 Positioning Special Function Unit [FX2N-10GM, FX2N-20GM]
Model
FX2N-10GM
FX2N-20GM
Number of control
axes
1 independent axis
2 independent/simultaneous axes
2-axes linear interpolation,
2-axes circular interpolation
Interpolation
-
Pulse output
system
Open collector system
Open collector system
Pulse output
method
"Pulse train + direction" method
"Forward/reverse rotation pulse train" method
Apx.
Maximum
200,000Hz
(100,000Hz during interpolation operation)
200,000Hz
*1
frequency
Acceleration
/deceleration type
Automatic trapezoidal acceleration/deceleration
-1
Unit
pulse, mm, 10 inch, deg
*2
-999,999 to +999,999 [× (minimum command unit ) pulse]
*3
-999,999 to +999,999 [× (minimum command unit ) mm]
Positioning range
*3
-1
-999,999 to +999,999 [× (minimum command unit ) ×10 inch]
*3
-999,999 to +999,999 [× (minimum command unit ) deg]
Program language
Position data
Cod number system, table system
Cod number system
Block designation (X-axis, Y-axis, 2 axes
simultaneously): 0 to 99 (100 blocks)
*4
Block designation: 0 to 99 (100 blocks)
Connection of
manual pulse
generator
Connectable (Open collector system)
Set in parameters
Detection of
absolute position
(Reads out the cur-
rent value of ABS.)
•
•
PLC input/output: 8 points occupied
(Points can be either input or output points.)
This unit can perform positioning operations
independently, without a main unit.
This unit can perform teaching operation.
I/O points can be added (48 points,
maximum).
•
•
•
PLC input/output: 8 points occupied
(Points can be either input or output points.)
This unit can perform positioning operations
independently, without a main unit.
Others
•
•
This unit can perform teaching operation.
*1. Do not exceed the maximum rotation speed of the servo motor or the stepping motor.
*2. The minimum command unit sets the 1, 10,102 or 103 in parameters.
*3. The minimum command unit sets the 1, 10-1,10-2 or 10-3 in parameters.
*4. Up to 100 points (table) can be set for the table operation.
A - 15
3 Comparison of Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
3.2 Comparison of Operation Modes
3.2
Comparison of Operation Modes
Positioning operation
pattern
Description
Jogging operation
Jogging speed
Speed
If the forward/reverse rota-
tion command is input, the
motor will rotate in the for-
ward/reverse direction.
3*1
3
3
3
3
3
3
3
3
3
3
Start
JOG
command
Mechanical zero return
The mechanical zero return
start command will start the
zero return operation at the
specified speed. At the com-
pletion of the mechanical
zero return, CLEAR signal
will be output.
Zero return
speed
Creep
speed
Speed
3
Origin DOG input: ON Start
CLEAR
The DOG search function
applies for each unit.
signal
Electric zero return
The SETR instruction will
return the workpiece to the
set electric origin at the maxi-
mum speed set the parame-
ters.
Speed
Maximum speed
−
−
−
3
3
3
3
−
Electric origin
Start
1-speed positioning
Speed
Operation speed
The start command will start
the operation at the speci-
fied operation speed, and the
operation will stop at the tar-
get position.
3*2
3
3
3
Target
position
Start
Transfer distance
2-speed positioning
The start command will
transfer the workpiece to the
distance (1) at operation
speed (1), and then to the
distance (2) at operation
speed (2).
Operation
speed(1)
Speed
Operation
speed(2)
−
−
3
3
3
3
Start
Transfer
distance(1)
Transfer
distance(2)
3*3
3*4
Multi-speed operation
The workpiece will change
speed with the specified
transfer distance.
The figure shows an example
a of 3-speed operation.
P2
P3
V3
P1
Speed
−
3*5
V1
V2
Start
*1. Drive to Increment instruction is used.
*2. Drive to Increment/Absolute instructions are used.
*3. The pulse train function of the linear interpolation instruction will perform this operation.
*4. The pulse train function of the linear interpolation instruction will perform this operation.
Operation of only one axis is possible.
*5. The table operation (continuous operation) function will perform this operation.
A - 16
3 Comparison of Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
3.2 Comparison of Operation Modes
A
B
Positioning operation
Description
pattern
Interrupt stop
(linear interpolation [Interrupt
stop])
If an interrupt input turns ON,
during a linear interpolation
operation to the target posi-
tion (x, y) at a vector speed,
the speed will decelerate and
the positioning operation will
stop.
Apx.
Ignoring
remaining
distance
−
−
−
−
−
−
3
3
3
Target
position
(x, y)
Y-axis
Interrupt input
X-axis
Start point
Interrupt stop
If an interrupt input turns ON,
during a positioning opera-
tion, the speed will deceler-
ate and the operation will
stop.
Speed Operation speed
3
3
−
Speed
Interrupt
input
Target
position
Interrupt 1-speed positioning
(Interrupt 1-speed constant
quantity feed)
If an interrupt input turns ON,
the workpiece will travel to
the specified transfer dis-
tance at the same speed,
where it will decelerate and
the operation will stop.
Operation speed
Speed
3*6
3
3
−
3
3
3
3
Interruption command
Transfer distance
Start
The operation starts at oper-
ation speed (1) by the start
command. During the opera-
tion, if the speed reduction
command is input, the speed
will decelerate to operation
speed (2). After that, the
operation will be continued at
operation speed (2) until the
stop command is input.
2-speed positioning with
speed reduction
Operation
Speed
speed(1)
Operation
speed(2)
−
−
−
−
−
Start
Speed reduction Stop
command command
Interrupt 2-speed positioning
(Interrupt 2-speed constant
quantity feed)
If interrupt input(1) turns ON,
the speed will be reduced to
the 2nd speed. After that, if
interrupt input(2) turns ON,
the operation will decelerate
to stop after moving the
specified transfer distance at
the 2nd speed.
Transfer
distance
1st speed
Speed
−
3
3
3
3
2nd speed
Start
Interrupt
input(1)
Interrupt
input(2)
*6. Interrupt positioning instruction performs this operation.
Only available for FX3U and FX3UC PLCs.
A - 17
3 Comparison of Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Common Items
3.2 Comparison of Operation Modes
Positioning operation
Description
pattern
Variable-speed operation
Speed
The operation will be per-
3*7
3
3*8
−
−
−
3*8
formed at the operation
speed specified by the PLC.
Start Speed
change
Speed
change
Stop
Linear interpolation
Target
position (x, y)
The workpiece will travel to
the target position at the
specified vector speed (inter-
polation operation).
Y-axis
y
−
−
−
−
x
Start point
X-axis
Circular interpolation
3*9
3*10
The workpiece will travel to
the specified target position
(x, y) along an arc at the
specified circumferential
speed.
Target position (x, y)
CW
Radius: -r
CCW
Start
point
Target
position
(x, y)
−
−
−
−
The center coordinate or
radius can be specified.
Start point
Radius: r
Solid line
:cw Dotted line
:ccw
3
X-/Y-/XY-
axis:
Table operation
3
200
3
100
No. Position Speed •••
A positioning control program
can be set with the table.
0
1
2
200
500
500
1000
2000
−
−
−
points, points,
300
maxi-
mum
maxi-
mum
points,
maxi-
mum
1000
Manual pulse generator
operation
Input pulse:
30 kHz or less
Phase
3
3
3
3
Manual operation can be per-
formed with the manual pulse
generator.
A
Manual pulse
generator
30 kHz, 2 kHz, 2 kHz, 100 kHz,
Phase
−
B
maxi-
mum
maxi-
mum
maxi-
mum
maxi-
mum
Servo amplifier
drive unit
Magnification
Dividing ratio
*7. Variable speed pulse output instruction is used to perform this operation.
Operations with acceleration/deceleration are supported in the FX3U/FX3UC PLC Ver. 2.20 or later and FX3G
PLC.
*8. Operates with acceleration/deceleration.
*9. When interpolation instructions are consecutively set in the program, it will immediately shift to the
next operation. (continuous pass operation).
*10. When the interpolation operation is continuously set in the table operation, it will immediately shift to
the next operation. (Continuation pass function)
A - 18
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
A
B
FX3G/FX3U/FX3UC Series Programmable
Controllers
Apx.
User’s Manual [Positioning Control Edition]
B. Built-in Positioning Functions
Foreword
"B. Built-in Positioning Functions" describes the "positioning" functions incorporated in the MELSEC-F FX3G/
FX3U/FX3UC Series PLC and should be read and understood before attempting to install or use the unit.
Also, store this manual in a safe place so that you can take it out and read it whenever necessary. Always
forward it to the end user.
This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent
licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property
rights which may occur as a result of using the contents noted in this manual.
© 2005 MITSUBISHI ELECTRIC CORPORATION
B - 1
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
Description of Manual (Built-in Positioning Function)
In this manual, the following formats are used for describing the built-in positioning functions.
Shows the title of the manual and the title
of the division.
This area shows the title of the manual and the title
of the division for the current page.
1st line: Shows the title of the manual.
2nd line: Shows the title of the division.
Shows the title of the chapter
and the title of the section.
This area shows the title of the
chapter and the title of the
section for the current page.
Indexes the title of
division.
The right side of each
page indexes the title
of the division for the
current page.
Shows the reference.
This area shows the
reference document
(the reference document is
shown next to " ").
If the reference is in the
"A. Common items"
division, only the chapter,
section, or subsection
number will be shown
next to " ".
If the reference is in another
division, the chapter,
section, or subsection
number will be shown
next to " " together with
the title of the division.
Shows the version number
of the compatible PLC.
Compatible
series
Shows the compatible
version numbers.
Ver. 2.20: Version
below 2.20
Ver.2.20 : Version 2.20
or later
The above is different from the actual page, as it is provided for explanation only
B - 2
1 Outline
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
1.1 Features
A
B
1. Outline
This chapter describes a general outline of the positioning modules. Note that the general outputs of the
FX3G/FX3U/FX3UC PLC (transistor output) and FX3U-2HSY-ADP high-speed output special adapter are
needed for positioning control.
1.1
Features
Apx.
1) The general outputs of the FX3G/FX3U/FX3UC PLC (transistor output) can control up to 3 axes*1 for
positioning operations.
2) If one high-speed output special adapter (FX3U-2HSY-ADP) is connected, the adapter can control up to 2
axes for the positioning operation. If two high-speed output special adapters are connected, the adapters
can control up to 4 axes for the positioning operation.
3) The FX3G/FX3U/FX3UC PLC positioning instructions (applied instructions) are used for positioning control.
4) The general outputs of the FX3G/FX3U/FX3UC PLC (transistor output) can output a pulse train of 100 kHz
(open collector system).
5) The FX3U-2HSY-ADP high-speed output special adapter can output a pulse train of 200 kHz (differential
line driver system).
6) The FX3U-2HSY-ADP high-speed output special adapter can switch the output method between "pulse
train + direction" method and "forward/reverse rotation pulse train" method.
System
Points and references
• If the general outputs of the FX3G/FX3U/FX3UC PLC are used:
3 axes*1, maximum
...
...
Number of controllable axes
Servo amplifier (drive unit)etc.
To check the PLC model,
refer to Section 1.3.
FX3G/FX3U/FX3UC PLC
(transistor output)
1-axis
2-axes
3-axes
For a detailed description of
the positioning instructions,
refer to Chapters 6 to 11.
...
For a detailed description of
the input/output specifications,
refer to Section 2.4 and
Section 2.5.
...
...
For examples of connection,
refer to the Appendix.
*1. 2 independent axes in 14-point and 24-point type FX3G PLC.
• If FX3U-2HSY-ADP adapters are connected to the FX3U PLC:
4 axes, maximum
...
...
Number of controllable axes
Servo amplifier (drive unit)etc.
FX3U-2HSY
-ADP
FX3U PLC
To check the PLC model,
refer to Section 1.3.
1-axis
2-axes 3-axes 4-axes
For a detailed description of the
positioning instructions, refer to
Chapters 6 to 11.
...
...
For a detailed description of the
input/output specifications, refer
to Section 2.4 and Section 2.5.
2nd
1st
...
For examples of connection,
refer to the Appendix.
B - 3
1 Outline
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
1.2 Setup Procedure for Positioning Control
1.2
Setup Procedure for Positioning Control
DESIGN PRECAUTIONS
•
Make sure to have the following safety circuits outside of the PLC to ensure safe system operation even during
external power supply problems or PLC failure.
Otherwise, malfunctions may cause serious accidents.
1) Most importantly, have the following: an emergency stop circuit, a protection circuit, an interlock circuit for
opposite movements (such as normal vs. reverse rotation), and an interlock circuit (to prevent damage to the
equipment at the upper and lower positioning limits).
2) Note that when the PLC CPU detects an error, such as a watchdog timer error, during self-diagnosis, all
outputs are turned off. Also, when an error that cannot be detected by the PLC CPU occurs in an input/output
control block, output control may be disabled.
External circuits and mechanisms should be designed to ensure safe machinery operation in such a case.
3) Note that when an error occurs in a relay, triac or transistor output device, the output could be held either on or
off.
For output signals that may lead to serious accidents, external circuits and mechanisms should be designed to
ensure safe machinery operation in such a case.
DESIGN PRECAUTIONS
•
Do not bundle the control line together with or lay it close to the main circuit or power line. As a guideline, lay the
control line at least 100mm (3.94") or more away from the main circuit or power line.
Noise may cause malfunctions.
•
Install module so that excessive force will not be applied to the built-in programming port, power connectors, I/O
connectors, communication connectors, or communication cables.
Failure to do so may result in wire damage/breakage or PLC failure.
WIRING PRECAUTIONS
•
•
Make sure to cut off all phases of the power supply externally before attempting installation or wiring work.
Failure to do so may cause electric shock or damage to the product.
Make sure to attach the terminal cover, offered as an accessory, before turning on the power or initiating operation
after installation or wiring work.
Failure to do so may cause electric shock.
WIRING PRECAUTIONS
•
•
Connect the AC power supply to the dedicated terminals specified in the manual of the PLC main unit.
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the PLC will burn
out.
Connect the DC power supply to the dedicated terminals specified in the manual of the PLC main unit.
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the PLC will burn
out.
•
•
Do not wire vacant terminals externally.
Doing so may damage the product.
Perform class D grounding (grounding resistance: 100Ω or less) to the grounding terminal on the FX3U/FX3G PLC
2
main unit with a wire 2 mm or thicker.
Do not use common grounding with heavy electrical systems (refer to the manual of the PLC main unit).
Perform class D grounding (grounding resistance: 100Ω or less) to the grounding terminal on the main unit.
Do not use common grounding with heavy electrical systems.
When drilling screw holes or wiring, make sure cutting or wire debris does not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
Install module so that excessive force will not be applied to I/O connectors.
Failure to do so may result in wire damage/breakage or PLC failure.
Connect input/output cables securely to their designated connectors.
•
•
•
•
Loose connections may cause malfunctions.
B - 4
1 Outline
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
1.2 Setup Procedure for Positioning Control
A
B
WIRING PRECAUTIONS
•
Make sure to properly wire the FX3U/FX3G Series main unit and FX0N/FX2N Series extension equipment in
accordance with the following precautions.
Failure to do so may cause electric shock, a short-circuit, wire breakage, or damage to the product.
-
-
The disposal size of the cable end should follow the dimensions described in this manual.
Tightening torque should be between 0.5 and 0.8 N m.
•
•
Make sure to properly wire to the European terminal board in accordance with the following precautions.
Failure to do so may cause electric shock, a short-circuit, wire breakage, or damage to the product.
-
-
-
-
-
-
The disposal size of the cable end should follow the dimensions described in this manual.
•
Tightening torque should be between 0.22 and 0.25 N m.
Twist the end of strand wire and make sure that there are no loose wires.
Do not solder-plate the electric wire ends.
Do not connect more than the specified number of wires or electric wires of unspecified size.
Affix the electric wires so that neither the terminal block nor the connected parts are directly stressed.
Apx.
•
Make sure to properly wire to the FX Series terminal blocks in accordance with the following precautions.
Failure to do so may cause electric shock, a short-circuit, wire breakage, or damage to the product.
-
-
The disposal size of the cable end should follow the dimensions described in this manual.
•
Tightening torque should be between 0.5 and 0.8 N m.
STARTUP AND MAINTENANCE
PRECAUTIONS
•
•
•
Do not touch any terminal while the PLC's power is on.
Doing so may cause electric shock or malfunctions.
Before cleaning or retightening terminals, cut off all phases of the power supply externally.
Failure to do so may cause electric shock.
Before modifying or disrupting the program in operation or running the PLC, carefully read through this manual
and the associated manuals and ensure the safety of the operation.
An operation error may damage the machinery or cause accidents.
STARTUP AND MAINTENANCE
PRECAUTIONS
•
Do not disassemble or modify the PLC.
Doing so may cause fire, equipment failures, or malfunctions.
For repair, contact your local Mitsubishi Electric distributor.
•
•
Turn off the power to the PLC before connecting or disconnecting any extension cable.
Failure to do so may cause equipment failures or malfunctions.
Turn off the power to the PLC before attaching or detaching the following devices.
Failure to do so may cause equipment failures or malfunctions.
-
-
Peripheral devices, expansion boards, and special adapters
Input/output extension units/blocks and FX Series terminal blocks
B - 5
1 Outline
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
1.2 Setup Procedure for Positioning Control
Built-in positioning function
Outline of system
•
•
Version numbers of compatible PLCs
Version numbers of compatible programming
tools
Refer to Chapter 1
Outline
•
Assignment of input/output numbers
Refer to Chapter 2
Specifications on incorporated
positioning functions
Specifications
•
General specifications, power supply
specifications, performance specifications
Input/output specifications
•
Refer to the manual of each motor.
Motor specifications
Motor
specifications
•
Performance
specifications
Motor capacity
Refer to Division A
"Common Items".
•
System configuration and unit selection
System configuration
Unit selection
•
Refer to Chapter 2
and Appendix.
Wiring
Wiring
•
Wiring of power supply, input, and
output lines
Refer to Chapter 4.
•
Example of connection to servo amplifier
Setting of PLC side
Setting of servo amplifier parameters
Setting of PLC and servo amplifier
•
Selection of output method
(high-speed output special adapter)
Setting of command pulse input method and
electronic gear (servo amplifier)
•
Refer to Chapter 4.
Related devices
Refer to Chapter 5
Operation test
Related devices
Maximum speed, zero return speed
Acceleration time, deceleration time
•
•
Operation test
•
•
Creation of program for operation test
Motion check
(forward rotation, reverse rotation)
Refer to Chapters 6 to 11.
Programming
Programming
Details on the positioning instructions
•
If the motor does not operate or does not
operate properly, refer to Chapter 13
"Troubleshooting."
Refer to Chapter 12.
Examples of practical programs
Examples of programs
(forward rotation, reverse rotation, zero return)
•
•
Relay ladder program
Step ladder program
B - 6
1 Outline
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
1.3 Version Numbers of Compatible PLCs
A
B
1.3
Version Numbers of Compatible PLCs
1.3.1 Manufacturer's serial number check method
The year and month of production of the product can be checked on the nameplate, and "LOT" indicated on
the front of the product.
1. Checking the nameplate
The year and month of production of the product can be checked from the manufacturer's serial number
"SERIAL" indicated on the label adhered to the right side of the product.
Example: FX3U-48MR/ES (manufacture's serial number: 930001)
Apx.
PROGRAMMABLE
CONTROLLER
MITSUBISHI
FX3U-48MR/ES
MODEL
Right side
100-240VAC 50/60Hz 40W
OUT:30VDC/240VAC 2A(COSφ=1)
SERIAL
930001
80M1 IND. CONT. EQ.
MITSUBISHI ELECTRIC CORPORATION
MADE IN JAPAN
9
3
0
0
0
1
Control number
Month (Example: Mar.): (1 to 9 =January to September,
X= October, Y= November, Z= December)
Year (Example: 2009): Last digit of year
2. Checking the front of the product
The year and month of production of the product can be checked from the manufacturer's serial number
"LOT" on the front (at the bottom) of the product.
The "LOT" indication is adopted for products manufactured at the following times.
Main unit
FX3U Series PLC
"LOT" indication adoption time
January 2009 and later
FX3UC Series PLC
FX3G Series PLC
January 2009 and later
October 2008 and later
Example: FX3U-48MR/ES
9
3
Month (Example: Mar.): (1 to 9= January to September,
X= October, Y= November, Z= December)
Year (Example: 2009): Last digit of year
B - 7
1 Outline
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
1.3 Version Numbers of Compatible PLCs
1.3.2 Version check
The D8001 special data register contains information for determining the PLC version.
D8001
2
4
1
0
0
PLC type and
version
Version information (Example: Ver. 1.00)
PLC type Example: 24 = FX3U/FX3UC PLC
26 = FX3G PLC
1.3.3 Version upgrade history
Compatible version
number
Date (month and year)
of production
Compatible PLC
Remarks
Equivalent to FX3UC PLC Ver. 2.20
Functions specified as "Ver.2.20 or
later" in this manual are applicable.
Ver. 2.20 (initial product)
or later
After May 2005
FX3U PLC
Ver. 2.30 or later
After November 2005
After January 2004
Ver. 1.00 (initial product)
or later
•
DVIT instruction function is added.
Ver. 1.30 or later
After August 2004
-
Designation of interrupt input
signal
Functions specified as "Ver.2.20 or
later" in this manual are applicable.
•
TBL instruction is added.
-
GX Developer can set the
positions using parameters.
FX3UC PLC
•
•
•
PLSV instruction function is added.
Acceleration/deceleration function
DVIT instruction function is added.
User interruption mode
DSZR, ZRN instruction functions are
added.
Ver. 2.20 or later
After May 2005
-
-
-
Designation of destination for
CLEAR signal to be output
Ver. 2.30 or later
After November 2005
After June 2008
Ver. 1.00 (initial product)
or later
FX3G PLC
B - 8
1 Outline
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
1.4 Version Numbers of Compatible Programming Tools
A
B
1.4
Version Numbers of Compatible Programming Tools
The built-in positioning functions depend on the version of the FX3G/FX3U/FX3UC PLC. Select a compatible
version of GX Developer for programming.
→ For details on version numbers of compatible PLCs, refer to Section 1.3.
1) FX3U PLC
Version
number of FX3U
PLC
Model
Version number of
Remarks
(Software model) compatible GX Developer
•
•
Supports FX3U PLCs (Ver.2.20 or later).
Model selection: FX3U(C)*1
Ver.2.20 or later
Ver.2.30 or later
Ver. 8.23Z or later
Ver. 8.29F or later
GX Developer
SWꢁD5C-GPPW-J
SWꢁD5C-GPPW-E
Apx.
Supports FX3UC PLCs (Ver.2.30 or later).
Model selection: FX3U(C)
*1. For Ver. 8.23Z or 8.24A of GX Developer, the model to be selected is FX3UC.
2) FX3UC PLC
Versionnumber
Model
Version number of
Remarks
of FX3UC PLC
(Software model) compatible GX Developer
•
•
•
Supports FX3UC PLCs (Ver.1.00 or later).
Model selection: FX3UC
Ver.1.00 or later
Ver.8.13P or later
Supports FX3UC PLCs (Ver.1.30 or later).
Model selection: FX3UC
Ver.1.30 or later
Ver.2.20 or later
Ver.2.30 or later
Ver.8.18U or later
Ver.8.23Z or later
Ver. 8.29F or later
GX Developer
SWꢁD5C-GPPW-J
SWꢁD5C-GPPW-E
Supports FX3UC PLCs (Ver.2.20 or later).
Model selection: FX3U(C)*1
•
Supports FX3UC PLCs (Ver.2.30 or later).
Model selection: FX3U(C)
*1. For Ver. 8.23Z or 8.24A of GX Developer, the model to be selected is FX3UC.
3) FX3G PLC
Versionnumber
of FX3G PLC
Model
Version number of
Remarks
(Software model) compatible GX Developer
GX Developer
Ver.1.00 or later SWꢁD5C-GPPW-J
•
Supports FX3G PLCs (Ver.1.00 or later).
Model selection: FX3G
Ver.8.72A or later
SWꢁD5C-GPPW-E
B - 9
1 Outline
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
1.5 Assignment of Input/Output Numbers
1.5
Assignment of Input/Output Numbers
1.5.1 Assignment of Input Numbers
Assign the input numbers of the FX3G/FX3U/FX3UC PLC as follows:
Application
Input number
Remarks
Connect a line to any input.
If the line-connected input is turned on, turn off the positioning instruction signal
must be turned off.
All input
points
Stop command
Connect a line to any input.
If the line-connected input is turned on, the DSZR or ZRN instruction must be
turned on.
Zero return
command
All input
points
Connect a line to the input of the near-point signal (DOG) specified by DSZR or
ZRN instruction.
→ For details on the near-point signal of the DSZR instruction, refer to
Section 6.2.
→ For details on the near-point signal of the ZRN instruction, refer to
Section 6.3.
Near-point
signal
(DOG)
All input
points
Point:
•
To use the DSZR instruction:
If X000 to X017*1 of the main unit are set for the near-point signal (DOG), the
near-point signal (DOG) will be monitored at 1ms intervals.
•
To use the ZRN instruction:
If X000 to X007 of the main unit are set for the near-point signal (DOG), the PLC
interruption function will be used for processing of the near-point signal (DOG).
Zero-phase
signal
Connect a line to the input (X000 - X007) specified for the zero-phase signal (this
input is specified by DSZR instruction).
X000 to X007
Connect a line if it is necessary to use the absolute position detection system.
Connect a line to the input specified by the ABS instruction.
Use 3 consecutive input points for this function.
All input
points
ABS read
Connect a line to any input.
If the line-connected input is turned on, the DRVI instruction for the jogging motion
must be turned on.
All input
points
JOG command
B - 10
1 Outline
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
1.5 Assignment of Input/Output Numbers
A
B
Application
Input number
Remarks
The interrupt input depends on the pulse output destination specified by the DVIT
*2
instruction as shown in the following table. If the version number of the PLC is
1.30 or higher, the interrupt input can be specified.
Pulse output destination
interrupt input
X000
Y000
Y001
Y002
X001
X002
*3
X003
Y003
Apx.
FX3UC PLC Ver. 1.30 or later
If the interrupt input specification function is used, the D8336
register (interrupt input specification register) can specify the
interrupt input number (X000 - X007) for each pulse output
destination.
→ For details on the interrupt input specification method, refer to
Subsection 4.3.7.
Interrupt input
X000 to X007
*4
FX3U/FX3UC PLC Ver. 2.20 or later
If the interrupt input specification function is used, the D8336
register (interrupt input specification register) can specify the
interrupt input number (X000 - X007) for each pulse output
destination, or the user interrupt input command can be
specified.
→ For details on the user interrupt input command, refer to
Subsection 4.3.7.
The user interrupt input command depends on the pulse output destination as
shown in the following table.
Pulse output destination
User interrupt input command
Y000
Y001
Y002
M8460
M8461
M8462
M8463
*3
Y003
Connect a line to any input.
If the line-connected input is turned on, the forward limit relay must be turned on.
The forward limit relay depends on the pulse output destination as shown in the
following table.
Pulse output destination
Forward limit relay
M8343
Forward
rotation limit
(LSF)
All input
points
Y000
Y001
M8353
*5
M8363
Y002
*3
M8373
Y003
Connect a line to any input.
If the line-connected input is turned on, the reverse limit relay must be turned on.
The reverse limit relay depends on the pulse output destination as shown in the
following table:
Pulse output destination
Reverse limit relay
M8344
Reverse rota-
tion limit (LSR)
All input
points
Y000
Y001
M8354
*5
M8364
Y002
*3
M8374
Y003
B - 11
1 Outline
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
1.5 Assignment of Input/Output Numbers
*1. X000 to X007 for FX3U-16Mꢁ, FX3UC-16M
ꢁ.
X000 to X007 for FX3G PLC (main unit).
*2. Interrupt outputs are supported only in the FX3U and FX3UC PLC.
*3. Y003 can be specified as the pulse output destination only if 2 high-speed output special adapters are
connected to the FX3U PLC.
*4. Ver.2.20 is assigned to the initial product of the FX3U PLC.
*5. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
1.5.2 Assignment of Output Numbers
1. FX3G/FX3U/FX3UC Series main unit (transistor output)
Output
number
Application
Remarks
Y000
Y001
Pulse train signal
(Pulse output
destination)
Connect a line to the output (Y000 - Y002) specified for the pulse output
designation (this output is specified by the positioning instruction).
*1
Y002
Direction signal
(Rotational
direction signal)
Connect a line to any output.
Connect a line to the output specified for the rotation direction signal (this signal is
specified by the positioning instruction).
All output
*2
points
Connect a line if it is necessary to use DSZR/ZRN instruction to output the CLEAR
signal.
The CLEAR signal output depends on the pulse output destination specified by
the DSZR/ZRN instruction. If the PLC version is later than the following number,
the CLEAR signal can be specified.
Pulse output destination
CLEAR signal
Y004
Y000
Y001
Y005
*1
Y006
Y002
FX3U/FX3UC PLC (transistor output) Ver. 2.20 or later:
If the CLEAR signal device specification function is used, the
CLEAR signal device specification register can specify an
output for each pulse output destination.
All output
CLEAR signal
*2
points
→ For details on the CLEAR signal device specification method, refer to
Subsection 4.3.4.
The CLEAR signal device specification register depends on the pulse output
destination as shown in the following table:
Pulse output destination CLEAR signal device specification register
Y000
Y001
Y002
D8464
D8465
D8466
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Specify an output number for transistor output.
B - 12
1 Outline
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
1.5 Assignment of Input/Output Numbers
A
B
2. High-speed output special adapter
Output number
Application
Terminal
Remarks
1st
2nd
Connect a line to determine the pulse train signal or the forward
rotation pulse train for the 1st axis of each high-speed output
special adapter.
For the 1st adapter, specify Y000 as the pulse output destination
of the positioning instruction. For the 2nd adapter, specify Y002
as the pulse output destination of the positioning instruction.
Y0/2+
Y0/2-
Y000
Y002
Pulse train sig-
nal/forward
rotation pulse
train
Connect a line to determine the pulse train signal or the forward
rotation pulse train for the 2nd axis of each high-speed output
special adapter.
For the 1st adapter, specify Y001 as the pulse output destination
of the positioning instruction. For the 2nd adapter, specify Y003
as the pulse output destination of the positioning instruction.
(pulse output
destination)
Apx.
Y1/3+
Y1/3-
Y001
Y004
Y003
Y006
Connect a line to determine the direction signal or the reverse
rotation pulse train for the 1st axis of each high-speed output
special adapter.
For the 1st adapter, specify Y004 as the rotation direction signal
of the positioning instruction. For the 2nd adapter, specify Y006
as the rotation direction signal output of the positioning
instruction.
Y4/6+
Y4/6-
Direction sig-
nal/reverse
rotation pulse
train
Connect a line to determine the direction signal or the reverse
rotation pulse train for the 2nd axis of each high-speed output
special adapter.
For the 1st adapter, specify Y005 as the rotation direction signal
output of the positioning instruction. For the 2nd adapter, specify
Y007 as the rotation direction signal output of the positioning
instruction.
(rotation
direction
signal)
Y5/7+
Y5/7-
Y005
Y007
Connect a line if it is necessary to use the DSZR/ZRN instruction
to output the CLEAR signal.
Using the CLEAR signal device specification function, specify the
output number for the transistor output. In this case, do not
specify an output device if the device is already specified for
outputting the rotational direction signal.
→ For details on the CLEAR signal device specification
method, refer to Subsection 4.3.4.
The CLEAR signal device specification register depends on the
pulse output destination as shown in the following table:
CLEAR signal device
Pulse output destination
specification register
CLEAR signal
*1
All output points
Y000
Y001
Y002
Y003
D8464
D8465
D8466
D8467
Point:
The CLEAR signal output that is initially set for the DSZR/ZRN
instruction is the same output as the direction signal (rotation
direction signal, reverse pulse train). Be sure to specify an
output number of another transistor output using the CLEAR
signal device specification function.
*1. Specify an output number for transistor output.
B - 13
1 Outline
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
1.5 Assignment of Input/Output Numbers
1.5.3 Connection of High-Speed Output Special Adapter
1. When the FX3U-16MR/ES uses an instruction that needs the high-speed inputting operation,
the main unit should have enough input terminals. Before selecting the main unit, be sure
to check the number of input points needed for the operation.
2. Specify the rotational direction signal of the positioning instruction depending on the
setting of each pulse output destination as shown in the following table:
Pulse output destination
Rotation direction signal
Y000
Y001
Y002
Y003
Y004
Y005
Y006
Y007
1st
2nd
3. To output the CLEAR signal using DSZR/ZRN instruction
The CLEAR signal output that is initially set for the DSZR/ZRN instruction is the same output as the direction
signal/reverse pulse train (rotation direction signal). Be sure to specify an output number of another transistor
output using the CLEAR signal device specification function.
→ For details on the CLEAR signal device specification method, refer to
Subsection 4.3.4.
4. If high-speed output special adapter is connected to the FX3U Series main unit, the output
numbers will be assigned in the same way as the main unit.
If an output number assigned to a high-speed output special adapter is turned on by the sequence program,
the corresponding output of the main unit will also be turned on. Do not connect a line to both output
terminals. Connect a line to one of the output terminals.
The outputs of the high-speed output special adapter and the main unit will be turned on as shown in the
following table:
Output operation
PLSY,PLSR,DSZR,
Unit
Other
instruction
DVIT,TBL,ZRN,PLSV,D
RVI,DRVA instruction.
PWM instruction
While instruction is
Use of the PWM (FNC58) instruction is not
FX3U Series main unit activated, relevant
Operated
*2
of relay output type
output is ON. (LED is
also ON.)
compatible with a relay type main unit.
FX3U Series main unit
of transistor output
type
*1
Operated
Operated
Operated
Operated
Operated
High-speed output
special adapter
The main unit should use the transistor output
Operated
*2
type.
*1. The output frequency limit of the main unit transistor output is 100 kHz. When operating a load with a
pulse frequency exceeding 100 kHz, PLC failure may occur.
*2. Furthermore, use of the PWM (FNC58) is not recommended with the relay type main unit and the
high-speed adapters due to chattering of the relay contacts.
B - 14
1 Outline
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
1.5 Assignment of Input/Output Numbers
A
B
Block diagram
FX3U Series main unit
Sequence program
FX3U-2HSY
-ADP
FX3U-2HSY
-ADP
FNC 158
DRVI
K30000 K20000 Y000 Y004
K15000 K10000 Y001 Y005
1st
FNC 158
DRVA
FNC 159
DRVA
K10000 K10000 Y002 Y006
K1000 K5000 Y003 Y007
2nd
Apx.
FNC 159
DRVI
Y002
Y003
Y006
Y007
Y000
Y001
Y004
Y005
Y000 Y001 Y002 Y003 Y004 Y005 Y006 Y007
B - 15
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2. Specifications
DESIGN PRECAUTIONS
•
Make sure to have the following safety circuits outside of the PLC to ensure safe system operation even during
external power supply problems or PLC failure.
Otherwise, malfunctions may cause serious accidents.
1) Most importantly, have the following: an emergency stop circuit, a protection circuit, an interlock circuit for
opposite movements (such as normal vs. reverse rotation), and an interlock circuit (to prevent damage to the
equipment at the upper and lower positioning limits).
2) Note that when the PLC CPU detects an error, such as a watchdog timer error, during self-diagnosis, all
outputs are turned off. Also, when an error that cannot be detected by the PLC CPU occurs in an input/output
control block, output control may be disabled.
External circuits and mechanisms should be designed to ensure safe machinery operation in such a case.
3) Note that when an error occurs in a relay, triac or transistor output device, the output could be held either on or
off.
For output signals that may lead to serious accidents, external circuits and mechanisms should be designed to
ensure safe machinery operation in such a case.
DESIGN PRECAUTIONS
•
•
Do not bundle the control line together with or lay it close to the main circuit or power line. As a guideline, lay the
control line at least 100mm (3.94") or more away from the main circuit or power line.
Noise may cause malfunctions.
Install module so that excessive force will not be applied to the built-in programming port, power connectors, I/O
connectors, communication connectors, or communication cables.
Failure to do so may result in wire damage/breakage or PLC failure.
DISPOSAL PRECAUTIONS
•
Please contact a certified electronic waste disposal company for the environmentally safe recycling and disposal
of your device.
TRANSPORTATION
PRECAUTIONS
•
Before transporting the PLC, turn on the power to the PLC to check that the BATT LED is off.
If the PLC is transported with the BATT LED on or the battery exhausted, the battery-backed data may be
unstable during transportation.
•
The PLC is a precision instrument. During transportation, avoid impacts larger than those specified in the general
specifications of the PLC main unit manual. Failure to do so may cause failures in the PLC. After transportation,
verify the operations of the PLC.
B - 16
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.1 General Specifications
A
B
2.1
General Specifications
For the FX3G/FX3U/FX3UC PLC general specifications, refer to the following manuals. Note that the
high-speed output special adapter general specifications are the same as the PLC excluding the specifications
shown in the following table.
→ For the FX3G PLC general specifications, refer to the FX3G Hardware Edition.
→ For the FX3U PLC general specifications, refer to the FX3U Hardware Edition.
→ For the FX3UC PLC general specifications, refer to the FX3UC Hardware Edition.
Item
Specifications
Withstand voltage
500V AC, for 1 minute
Between output terminal of high-speed output
special adapter and grounding terminal of PLC.
Apx.
5M Ω or more using 500V DC
insulation tester
Insulation resistance
2.2
Power Supply Specifications
For the FX3G/FX3U/FX3UC PLC power supply specifications, refer to the following manuals. The power supply
specifications of the high-speed output special adapter are shown in the following table.
→ For the FX3G PLC power supply specification, refer to the FX3G Hardware Edition.
→ For the FX3U PLC power supply specification, refer to the FX3U Hardware Edition.
→ For the FX3UC PLC power supply specifications, refer to the FX3UC Hardware Edition.
Item
Specifications
Output circuit drive
power supply
24V DC, 60 mA
The service power of the main unit is supplied internally.
5V DC, 30 mA
Adapter drive power
supply
The adapter driver power is internally supplied from the 5V DC power supply unit of the
main unit.
B - 17
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.3 Performance Specifications
2.3
Performance Specifications
*1
FX3G/FX3U/FX3UC PLC
*2
Model
FX3U-2HSY-ADP
(main unit, transistor output)
2 independent axes
(Connect 2 adapters to the main unit to
control 4 axes independently.)
*4
Number of control axes
3 independent axes
Interpolation
-
-
Pulse output system
Open collector system
Differential line driver system
"Pulse train + direction" method
"Forward/reverse rotation pulse train"
method
Pulse output method
"Pulse train + direction" method
100,000Hz
Maximum frequency
200,000Hz
Acceleration/
deceleration type
Automatic trapezoidal acceleration/deceleration
Unit
pulse
Positioning range
Program language
Position data
-999,999 to +999,999(pulse)
Sequence program
1 point (set in sequence program)
Connection of manual
pulse generator
-
-
Detection of absolute
position
(Reads out the current
value of ABS.)
ABS instruction
•
•
•
To be used when a servo amplifier with
a differential line receiver method is
connected.
To be used when positioning control is
performed with a FX3U Series relay
output type main unit.
•
Pulses can be output from the general-
purpose outputs (Y000, Y001, and
Y002) of the main unit.
Others
Used in place of the general-purpose
*3
outputs (Y000 to Y007) of the main
unit.
*1. For MELSERVO Series amplifiers, use a sink input/sink output type PLC.
*2. Can only be connected to the FX3U PLC. Up to 2 adapters can be connected.
*3. If 2 adapters are connected, Y000 to Y007 will be used. If only one adapter is connected, Y000,
Y001, Y004, and Y005 will be used. The relation between the output of the FX3U-2HSY-ADP and the
output of main unit is described in the following sections.
→ To use high-speed output special adapters, refer to Subsection 1.5.3 and Section 4.9 of "B. Built-in
Positioning Function".
*4. 2 independent axes in 14-point and 24-point type FX3G PLC.
B - 18
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.4 Input Specifications
A
B
2.4
Input Specifications
2.4.1 FX3U Series main unit (24V DC Input)
This section describes the input specifications of the FX3U Series main unit. Note that the simultaneous
turning-on rate is restricted for the input extension units and the main unit. For details on this restriction, refer
to the following manual:
→ Refer to the FX3U Hardware Edition.
Item
24V DC input specifications
24V DC±10%
3.9kΩ
Input signal voltage
All inputs
Apx.
X000 to X005
X006,X007
X010 or later
X000 to X005
X006,X007
X010 or later
X000 to X005
X006,X007
X010 or later
Input impedance
3.3kΩ
4.3kΩ
6mA/24V DC
7mA/24V DC
5mA/24V DC
3.5 mA or more
4.5mA or more
3.5 mA or more
Input signal current
Input ON
current
Input sensitivity
current
Input OFF
current
All inputs
All inputs
All inputs
1.5mA or less
*1
Input response time
Input signal type
Approx. 10 ms
No-voltage contact input
NPN/PNP open collector transistor
Circuit insulation
All inputs
-
Photocoupler insulation
Indication of input motion
Turning on the input will light the LED indicator lamp.
*1. If inputs X000 to X007 are assigned to the zero-phase signal of DSZR instruction or the interrupt input
of the DVIT the instruction, the input response time will be as shown in the following table.
Input
Input response time
X000 to X005
X006,X007
5µs
50µs
1. Internal input circuit
Sink input line connection
Main unit
Source input line connection
Main unit
Fuse
Fuse
L
L
N
N
Class-D
grounding
Class-D
grounding
S/S
24V 0V
24V 0V
S/S
0V
0V
24V
24V
X0
X1
X0
X1
Input
impedance
Input
impedance
B - 19
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.4 Input Specifications
2.4.2 FX3UC Series main unit (24V DC Input)
This section describes the input specifications of the FX3UC Series main unit. Note that the simultaneous
turning-on rate is restricted for the input extension units and the main unit. For details on this restriction, refer
to the following manual:
→ Refer to the FX3UC Hardware Edition.
Item
24V DC input specifications
Input signal voltage
All inputs
24V DC +20%, -15% / Ripple(p-p): 5 % or less
X000 to X005
X006,X007
3.9kΩ
Input impedance
3.3kΩ
X010 to X017
X000 to X005
X006,X007
4.3kΩ
6mA/24V DC
7mA/24V DC
5mA/24V DC
3.5 mA or more
4.5mA or more
3.5mA or more
Input signal current
X010 to X017
X000 to X005
X006,X007
Input ON
current
Input sensitivity
current
X010 to X017
Input OFF
current
All inputs
All inputs
1.5mA or less
*1
Input response time
Approx. 10 ms
No-voltage contact input
NPN open collector transistor
Input signal type
All inputs
*2
PNP open collector transistor
Circuit insulation
All inputs
-
Photocoupler insulation
*3
Indication of input motion
Turning on the input will light the LED indicator lamp
*1. If inputs X000 to X007 are assigned to the zero-phase signal of the DSZR instruction or the interrupt
input of the DVIT instruction, the input response time will be as shown in the following table.
Input
Input response time
X000 to X005
X006, X007
5µs
50µs
*2. PNP open collector transistors are supported only by the FX3UC-ꢁꢁMT/DSS.
*3. The FX3UC-32MT-LT(-2) uses the display module for monitoring.
1. Internal input circuit
·Sink input type(FX3UC-ꢀꢀ MT/D, FX3UC-32MT-LT(-2))
Main unit
Fuse
24V DC
Class-D grounding
COM
X0
X1
Input impedance
B - 20
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.4 Input Specifications
A
B
·Sink input type(FX3UC-ꢁꢁ MT/DSS)
Main unit
·Source input type (FX3UC-ꢁꢁ MT/DSS)
Main unit
Fuse
Fuse
24V DC
24V DC
*
*
COM0
X0
COM0
Apx.
X0
X1
X1
Input impedance
Input impedance
* Class-D grounding
* Class-D grounding
B - 21
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.4 Input Specifications
2.4.3 FX3G Series main unit (24V DC Input)
This section describes the input specifications of the FX3G Series main unit. Note that the simultaneous
turning-on rate is restricted for the input extension units and the main unit. For details on this restriction, refer
to the following manual:
→ Refer to the FX3G Hardware Edition.
Item
24V DC input specifications
24V DC ±10%
3.3kΩ
Input signal voltage
All inputs
X000 to X007
X010 or more
X000 to X007
X010 or more
X000 to X007
X010 or more
Input impedance
4.3kΩ
7mA/24V DC
5mA/24V DC
4.5 mA or more
3.5mA or more
Input signal current
Input ON
current
Input sensitivity
current
Input OFF
current
All inputs
All inputs
All inputs
1.5mA or less
*1
Input response time
Approx. 10 ms
No-voltage contact input
NPN/PNP open collector transistor
Photocoupler insulation
Input signal type
Circuit insulation
All inputs
-
Indication of input motion
Turning on the input will light the LED indicator lamp
*1. If inputs X000 to X007 are assigned to the zero-phase signal of the DSZR instruction the input
response time will be as shown in the following table.
Input
Input response time
X000, X001, X003, X004
X002, X005 to X007
10µs
50µs
1. Internal input circuit
Sink input type
Main unit
Source input type
Main unit
Fuse
Fuse
Class-D
grounding
Class-D
grounding
Input
impedance
Input
impedance
B - 22
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.5 Output Specifications
A
B
2.5
Output Specifications
2.5.1 FX3U Series main unit (Transistor Output)
This section describes the transistor output specifications of the FX3U Series main unit. Please note that the
simultaneous turning-on rate is restricted for the output extension units and the main unit. For details on the
restriction, refer to the following manual.
For MELSERVO Series amplifiers, use a sink input/sink output type PLC.
→ Refer to the FX3U Hardware Edition.
Item
Transistor output specifications
5 to 30V DC
External voltage
All outputs
Apx.
The total load current of resistance loads per common termi-
nal should be the following value or less.
Resistance load All outputs
-
-
-
1 point output common:0.5A
4 points output common:0.8A
8 points output common:1.6A
Maximum load
Inductive load
All outputs
All outputs
All outputs
Y000 to Y002
Y003 and more
Y000 to Y002
Y003 and more
All outputs
-
12W/24V DC
Open-circuit leakage current
ON voltage
0.1 mA or less at 30V DC
1.5V or less
5 µs or less at 10 mA or more (5 to 24V DC)
0.2 ms or less at 200 mA (at 24V DC)
5 µs or less at 10 mA or more (5 to 24V DC)
0.2 ms or less at 200 mA (at 24V DC)
Photocoupler insulation
OFF→ON
Response time
ON→OFF
Circuit insulation
Indication of output motion
LED is lit when the photocoupler is driven.
Pulse output terminals Y000, Y001, and Y002 are high-speed response output terminals.
To use the positioning instruction, adjust the load current of the NPN open collector to 10 to 100 mA (5 to 24V DC)
.
Item
Description
5 to 24V DC
Operation voltage range
Operation current range
Output frequency
10mA to 100mA
100 kHz or less
1. Sink internal output circuit
FX3U Series
main unit
Pulse train signal
Y000
COM1
Y004
Direction signal
COM2
Servo amplifier
(Drive unit)
Grounding*1
5 to 24V DC
*1. To ground the unit, refer to the servo amplifier (drive unit) manual. If the grounding method is not
specified, carry out class-D grounding.
B - 23
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.5 Output Specifications
2. Source internal output circuit
FX3U Series
main unit
Pulse train signal
Y000
+V0
Direction signal
Y004
+V1
Servo amplifier*2
(Drive unit)
Grounding*1
5 to 24V DC
*1. To ground the unit, refer to the servo amplifier (drive unit) manual. If the grounding method is not
specified, carry out class-D grounding.
*2. For MELSERVO Series amplifiers, use a sink output type FX3U Series main unit.
B - 24
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.5 Output Specifications
A
B
2.5.2 FX3UC Series main unit (Transistor Output)
This section describes the transistor output specifications of the FX3UC Series main unit. Note that the
simultaneous turning-on rate is restricted for the output extension units and the main unit. For details on this
restriction, refer to the following manual:
For MELSERVO Series amplifiers, use a sink input/sink output type PLC.
→ Refer to the FX3UC Hardware Edition.
Item
Transistor output specifications
External voltage
All outputs
5 to 30V DC
Y000 to Y003 0.3 A/point
Y004 or more 0.1A/1point
The total load current of the common
items (16 points) should be 1.6 A or
less.
Resistance load
Inductive load
Apx.
Maximum
load
7.2W/1point
Y000 to Y003
The total load of the common items
(16 points) should be 38.4 W or less at
24V DC.
(24V DC)
2.4W/1point
Y004 or more
(24V DC)
Open-circuit leakage current
ON voltage
All outputs
All outputs
0.1 mA or less at 30V DC
1.5V or less
Y000 to Y003 5 µs or less at 10 mA or more (5 to 24V DC)
Y004 to Y017 0.2 ms or less at 100 mA (at 24V DC)
Y000 to Y002 5 µs or less at 10 mA or more (5 to 24V DC)
FX3UC-32MT-LT
FX3UC-32MT-LT-2
OFF→ON
ON→OFF
Response
time
FX3UC-ꢁꢁMT/D
FX3UC-ꢁꢁMT/
DSS
OFF→ON
ON→OFF
Y003 or more 0.2 ms or less at 100 mA (at 24V DC)
Circuit insulation
All outputs
-
Photocoupler insulation
*1
Indication of output motion
LED is lit when the photocoupler is driven.
*1. The FX3UC-32MT-LT(-2) uses the display module for monitoring.
Pulse output terminals Y000, Y001, and Y002 are high-speed response output terminals.
To use the positioning instruction, adjust the load current of the NPN open collector to 10 to 100 mA (5 to 24V DC)
.
Item
Description
5 to 24V DC
Operation voltage range
Operation current range
Output frequency
10mA to 100mA
100 kHz or less
1. Sink internal output circuit
5 to 24V DC
FX3UC-ꢀꢀ MT/D
FX3UC-32MT-LT(-2)
Main unit
Servo amplifier
(Drive unit)
Pulse train signal
Y0
Direction signal
Y4
Grounding*2
COM1
*2. To ground the unit, refer to the servo amplifier (drive unit) manual. If the grounding method is not
specified, carry out class-D grounding.
B - 25
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.5 Output Specifications
2. Source internal output circuit
5 to 24V DC
Servo amplifier*2
(Drive unit)
FX3UC-ꢁꢁ MT/DSS
Main unit
Pulse train signal
Y0
Direction signal
Y4
Grounding*1
+V0
*1. To ground the unit, refer to the servo amplifier (drive unit) manual. If the grounding method is not
specified, carry out class-D grounding.
*2. For MELSERVO Series amplifiers, use a sink output type FX3UC Series main unit .
B - 26
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.5 Output Specifications
A
B
2.5.3 FX3G Series main unit (Transistor Output)
This section describes the transistor output specifications of the FX3G Series main unit. Note that the
simultaneous turning-on rate is restricted for the output extension units and the main unit. For details on this
restriction, refer to the following manual:
→ Refer to the FX3G Hardware Edition.
Item
Transistor output specifications
External voltage
All outputs
All outputs
5 to 30V DC
The total load current of resistance loads per common
terminal should be the following value or less.
Resistance load
Inductive load
-
-
1 point output common:0.5A
4 points output common:0.8A
Apx.
Maximum
load
The total of inductive loads per common terminal
should be the following value or less.
All outputs
-
-
1 point output common:12W/24V DC
4 points output common:19.2W/24V DC
Open-circuit leakage current
ON voltage
All outputs
All outputs
Y000, Y001
0.1 mA or less at 30V DC
1.5V or less
5 µs or less at 10 mA or more (5 to 24V DC)
OFF→ON
ON→OFF
OFF→ON
ON→OFF
Y002 or more 0.2 ms or less at 200 mA or more (at 24V DC)
Y000, Y001 5 µs or less at 10 mA or more (5 to 24V DC)
14-point, 24-point
type
Y002 or more 0.2 ms or less at 200 mA or more (at 24V DC)
Y000 to Y002 5 µs or less at 10 mA or more (5 to 24V DC)
Y003 or more 0.2 ms or less at 200 mA or more (at 24V DC)
Y000 to Y002 5 µs or less at 10 mA or more (5 to 24V DC)
Y003 or more 0.2 ms or less at 200 mA or more (at 24V DC)
Response
time
40-point, 60-point
type
Circuit insulation
All outputs
-
Photocoupler insulation
Indication of output motion
LED is lit when the photocoupler is driven.
Pulse output terminals Y000, Y001, and Y002*1 are high-speed response output terminals.
To use the positioning instruction, adjust the load current of the NPN open collector to 10 to 100 mA (5 to 24V DC).
*1. Y002 works as a high-speed response pulse output terminal only in 40-point and 60-point type main
units.
Item
Description
5 to 24V DC
Operation voltage range
Operation current range
Output frequency
10mA to 100mA
100 kHz or less
B - 27
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.5 Output Specifications
1. Sink internal output circuit
FX3G Series
main unit
Pulse train signal
Y000
COM0
Direction signal
Y004
COM3
Servo amplifier
(Drive unit)
Grounding*1
5 to 24V DC
2. Source internal output circuit
FX3G Series
main unit
Pulse train signal
Direction signal
Y000
+V0
Y004
+V3
Servo amplifier*2
(Drive unit)
Grounding*1
5 to 24V DC
*1. To ground the unit, refer to the servo amplifier (drive unit) manual. If the grounding method is not
specified, carry out class-D grounding.
*2. For MELSERVO Series amplifiers, use a sink output type FX3G Series main unit.
B - 28
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.5 Output Specifications
A
B
2.5.4 High-Speed Output Special Adapter [FX3U-2HSY-ADP]
This section describes the output specifications of the high-speed output special adapter (FX3U-2HSY-ADP).
Item
Output system
High-speed output special adapter (FX3U-2HSY-ADP)
Differential line driver system (equivalent to AM26C31)
Load current
25 mA or less
200KHz
Maximum output frequency
Photocoupler and transformer insulate PLC from external lines of its outputs, and
transformer insulates each SG.
Insulation
Cable length
10 m, maximum
Apx.
1. Internal output circuit
•To connect to photocoupler:
Servo amplifier
(Drive unit)
High-speed output
special adapter
FX3U-2HSY-ADP
Pulse train,
forward rotation pulse train
5V
Equivalent to
AM26C31
Y0/2+
Y0/2-
Direction signal, reverse
rotation pulse train
5V
Y4/6+
Y4/6-
SGA
Grounding*1
SGA*2
Servo amplifier
(Drive unit)
•To connect to differential line receiver:
Pulse train,
forward rotation pulse train
5V
5V
Equivalent to
AM26C31
Y1/3+
Y1/3-
Direction signal, reverse
rotation pulse train
Y5/7+
Y5/7-
SGB
Grounding*1
SGB*2
*1. To ground the unit, refer to the servo amplifier (drive unit) manual. If the grounding method is not
specified, carry out class-D grounding.
*2. The line between the SGA and the SGB is insulated.
B - 29
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.6 List of Functions
2.6
List of Functions
The instructions needed for the FX3G/FX3U/FX3UC PLC built-in positioning functions are shown in the following
table:
Positioning instruction
Mechanical zero return
Operation
Description
Refer to
If the DSZR/ZRN instruction turns ON,
mechanical zero return will be started at
the specified zero return speed. If the dog
sensor is turned on, the speed will be
reduced to the creep speed. If the zero-
phase signal is input, the operation will be
stopped, and the zero return will be
completed.
zero return
with DOG
instruction search
function
DSZR
Creep
speed
Zero return
speed
Chapter
6.
Zero point: ON DOG:ON
Start
ZRN
instruction
(Dog: OFF when ZRN
instruction is used)
zero return
(If the ZRN instruction is used, the dog
sensor will be turned off to stop the
operation.)
Absolute position detection system
Absolute
value detec-
tion system
instruction (Reading of
current ABS
If the ABS instruction turns ON, the
current motor address will be read out
from the servo amplifier.
ABS
Chapter
7.
Reads out the
current value.
value)
1-speed positioning
DRVI
Relative
If the DRVI/DRVA instruction turns ON,
the operation will be started at the
operation speed. When the workpiece
reaches the target position, the operation
will be stopped.
Operation speed
Transfer distance
instruction positioning
Chapter
8.
DRVA
instruction positioning
Absolute
Start
Target position
1-speed positioning with interruption
Operation speed
Transfer
If the DVIT instruction turns ON, the
operation will be started at the operation
speed. If the interrupt input turns ON, the
workpiece will go the specified transfer
distance, before decelerating to stop.
DVIT
instruction
*1
Interruption
positioning
Chapter
9.
distance
Start
Interrupt
input: ON
Variable speed operation
Operation without
Acceleration/Deceleration
Operation speed
If the PLSV instruction turns ON,
operation will be started at the specified
speed. With an operation speed change,
the speed changes to the specified speed,
and operation continues.
Variable
positioning
(Variable
Speed Pulse
Start Speed Speed Instruction:
change change OFF
PLSV
instruction
Chapter
10.
Operation with
Acceleration/Deceleration*2
Operation speed
At PLSV instruction OFF, the pulse output
stops.
Output)
With acceleration/deceleration operation,
the PLC accelerates and decelerates.
Speed
change
Start Speed
change
Instruction:
OFF
Others
No. Position Speed Instruction
Positioning
1
2
3
4
Preliminarily set the positioning points by
parameters. If the TBL instruction turns
ON, the workpiece will be transferred to
the specified point.
1000 2000
20000 5000
DRVI
DRVA
DVIT
TBL
using batch
Chapter
11.
instruction
setting
*2
50
1000
method
800
10000 DRVA
B - 30
2 Specifications
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
2.6 List of Functions
A
B
*1. Only available for FX3U and FX3UC PLCs.
*2. Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
Apx.
B - 31
3 Connection of Input/Output Lines and Tightening
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
3. Connection of Input/Output Lines and Tightening Torques
This chapter describes how to connect the input/output lines and the terminal tightening torques.
WIRING PRECAUTIONS
•
•
Make sure to cut off all phases of the power supply externally before attempting installation or wiring work.
Failure to do so may cause electric shock or damage to the product.
Make sure to attach the terminal cover, offered as an accessory, before turning on the power or initiating operation
after installation or wiring work.
Failure to do so may cause electric shock.
WIRING PRECAUTIONS
•
Connect the AC power supply to the dedicated terminals specified in the manual of the PLC main unit.
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the PLC will burn
out.
•
Connect the DC power supply to the dedicated terminals specified in the manual of the PLC main unit.
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the PLC will burn
out.
•
•
Do not wire vacant terminals externally.
Doing so may damage the product.
Perform class D grounding (grounding resistance: 100Ω or less) to the grounding terminal on the FX3U/FX3G PLC
2
main unit with a wire 2 mm or thicker.
Do not use common grounding with heavy electrical systems (refer to the manual of the PLC main unit).
Perform class D grounding (grounding resistance: 100Ω or less) to the grounding terminal on the main unit.
Do not use common grounding with heavy electrical systems.
When drilling screw holes or wiring, make sure cutting or wire debris does not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
Install module so that excessive force will not be applied to I/O connectors.
Failure to do so may result in wire damage/breakage or PLC failure.
Connect input/output cables securely to their designated connectors.
•
•
•
•
•
Loose connections may cause malfunctions.
Make sure to properly wire the FX3U/FX3G Series main unit and FX0N/FX2N Series extension equipment in
accordance with the following precautions.
Failure to do so may cause electric shock, a short-circuit, wire breakage, or damage to the product.
-
-
The disposal size of the cable end should follow the dimensions described in this manual.
•
Tightening torque should be between 0.5 and 0.8 N m.
•
•
Make sure to properly wire to the European terminal board in accordance with the following precautions.
Failure to do so may cause electric shock, a short-circuit, wire breakage, or damage to the product.
-
-
-
-
-
-
The disposal size of the cable end should follow the dimensions described in this manual.
•
Tightening torque should be between 0.22 and 0.25 N m.
Twist the end of strand wire and make sure that there are no loose wires.
Do not solder-plate the electric wire ends.
Do not connect more than the specified number of wires or electric wires of unspecified size.
Affix the electric wires so that neither the terminal block nor the connected parts are directly stressed.
Make sure to properly wire to the FX Series terminal blocks in accordance with the following precautions.
Failure to do so may cause electric shock, a short-circuit, wire breakage, or damage to the product.
-
-
The disposal size of the cable end should follow the dimensions described in this manual.
•
Tightening torque should be between 0.5 and 0.8 N m.
B - 32
3 Connection of Input/Output Lines and Tightening
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
3.1 Terminal Board (M3, M3.5)
A
B
3.1
Terminal Board (M3, M3.5)
A terminal board is used for the FX3U, FX3G Series main unit, FX2N Series input/output extension unit
(excluding some types), and FX0N Series input/output extension block.
3.1.1 Terminal Screw Size
The terminal screw size of each product is shown in the following table. For details on the crimp-style
terminals, refer to Subsection 3.1.2.
Product
Terminal screw
Tightening torque
FX3U, FX3G Series main unit, FX2N Series input/output powered
extension unit, FX2N/FX0N Series input/output extension block
M3
0.5 to 0.8N•m
Apx.
FX Series terminal block
M3.5
3.1.2 Termination
The size of each crimp-style terminal depends on the size of the terminal screw and the wiring method.
Refer to the following description to select a crimp-style terminal of optimum size.
1. FX3U, FX3G Series main unit,
FX2N Series input/output powered extension unit, and FX0N Series input/output extension
block
• When one wire is connected to one terminal
Terminal Crimp
screw
terminal
3.2(0.13")
3.2(0.13")
6.2mm(0.24")
or less
6.2mm(0.24")
or less
Terminal
• When two wires are connected to one terminal
3.2(0.13")
Terminal Crimp
screw terminal
6.2mm(0.24")
or less
6.3mm(0.25")
or more
3.2(0.13")
6.2mm(0.24")
Terminal
or less
6.3mm(0.25")
or more
2. FX Series terminal block
• When one wire is connected to one terminal
Terminal Crimp
screw terminal
3.7(0.15")
6.8mm(0.27")
or less
3.7(0.15")
6.8mm(0.27")
or less
Terminal
B - 33
3 Connection of Input/Output Lines and Tightening
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
3.2 European Terminal Board
• When two wires are connected to one terminal
3.7(0.15")
Terminal Crimp
6.8mm(0.27")
screw
terminal
or less
6.0mm(0.24")
or more
3.7(0.15")
6.8mm(0.27")
Terminal
or less
6.0mm(0.24")
or more
3.2
European Terminal Board
The European terminal board is used for the high-speed output special adapter and the FX2NC Series input/
output extension block.
3.2.1 Cable
Applicable cables and tightening torques
Wire size (stranded/
single wire)
Tightening
torque
Termination
2
2
•
•
To connect a stranded cable, peel the sheath off the cable,
and then twist the core before connection.
To connect a single-wire cable, just peel the sheath off the
cable before connection.
0.3 mm to 0.5 mm
Single-wire
2-wires
(AWG22 to 20)
2
0.3 mm (AWG22)
2
2
0.22 to
0.25 N•m
•
•
Rod terminal with insulation sleeve
(recommended terminal)
AI 0.5-8WH: Manufactured by Phoenix Contact
Caulking tool:
CRIMPFOX ZA 3: Manufactured by Phoenix Contact
(or CRIMPFOX UD 6: Manufactured by Phoenix Contact)
0.3 mm to 0.5 mm
Rod
terminal
with
insulation
sleeve
(AWG22-20)
(Refer to the external
view of the rod terminal
shown in the following
figure.)
3.2.2 Termination of Cable End
Directly terminate the end of each stranded cable or single-wire cable without a tool, or use the rod terminal
with insulation sleeve for termination.
• Directly terminate the end of the stranded/single-wire cable:
•
Stranded wire/solid wire
- Terminate the end of the stranded cable so that "barbed wires"
cannot protrude.
- Do not solder-plate the end of the cable.
9mm
(0.36")
• Terminate the cable end using a rod terminal with insulation sleeve:
If the cable sheath is too thick, it may be difficult to insert the cable
into the insulation sleeve. For this reason, select an appropriate cable
while referring to the external view.
•
Bar terminal with insulating sleeve
Insulating sleeve Contact portion
(Crimp area)
Manufacturer
Phoenix Contact
Model
Caulking tool
8mm
(0.32")
2.6mm
(0.11")
CRIMPFOX ZA 3
(or CRIMPFOX UD 6)
AI 0.5-8WH
14mm(0.56")
B - 34
3 Connection of Input/Output Lines and Tightening
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
3.3 Connector
A
B
3.2.3 Tool
• To tighten the terminals, use a purchased small-sized screwdriver whose tip is straight and is not widened
as shown in the right figure.
Note:
If the diameter of screwdriver grip is too small, tightening torque will not
be able to be achieved. Use the following recommended screwdriver or
an appropriate replacement (grip diameter: approximately 25mm).
With
straight tip
Manufacturer
Phoenix Contact
Model
0.4mm
(0.02")
2.5mm
(0.1")
SZS 0.4×2.5
Apx.
3.3
Connector
Connectors conforming to the requirements of the MIL C-83503 are used for the FX3UC Series main unit
along with some types of FX2NC Series input/output extension blocks.
3.3.1 Cable Connection To Input/Output Connector
Prepare the input/output cables while referring to the next Subsection.
Example : FX3UC-32MT/D Main unit
Input: X Output: Y
Input
X0
Output
Y0
X10
X11
X12
X13
X14
X15
X16
X17
Y10
Y11
Y12
Y13
Y14
Y15
Y16
Y17
X1
X2
X3
X4
X5
X6
X7
Y1
Y2
Y3
Y4
Y5
Y6
Y7
COM COM
COM1 COM1
*1
*1
*1
*1
*1: "
•" means that the terminal is not used.
B - 35
3 Connection of Input/Output Lines and Tightening
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
3.3 Connector
3.3.2 Setup of Input/Output Connection Connector
1. Applicable connector (connector purchased at store)
Use a 20-pin (1-key) socket that conforms to the requirements of the MIL C-83503.
Preliminarily check that the peripheral parts, such as the connector cover, will not cause any interference.
2. Input/output cables (optional cables manufactured by our company)
Mitsubishi Electric can provide input/output cables already equipped with a connector.
Model
Length
Description
Connector type
•
•
Single wire (Wire color: red)
PLC side: A 20-pin connector
5m
(16’ 4")
FX-16E-500CAB-S
General-purpose input/output cable
1.5m
(4’11")
FX-16E-150CAB
FX-16E-300CAB
FX-16E-500CAB
FX-16E-150CAB-R
FX-16E-300CAB-R
FX-16E-500CAB-R
FX-A32E-150CAB
FX-A32E-300CAB
•
•
Flat cables (with tube)
A 20-pin connector at both ends
3m
(9’10")
Cable for connection of FX Series
terminal block to input/output connector
For details on connection to the FX
Series terminal block, refer to the
following manuals:
5m
(16’ 4")
1.5m
(4’11")
→FX3G Hardware Edition
→FX3U Hardware Edition
→FX3UC Hardware Edition
•
•
Round multicore cables
A 20-pin connector at both ends
3m
(9’10")
5m
(16’ 4")
1.5m
(4’11")
•
•
Flat cables (with tube)
PLC side: Two 20-pin connectors
in 16-point units
Terminal block side: A dedicated
connector
One common terminal covers 32
input/output terminals
Cable for connection of A Series
A6TBXY36 connector/terminal board
conversion unit to input/output
connector type
3m
(9’10")
•
•
5m
(16’ 4")
FX-A32E-500CAB
3. Input/output cable connectors prepared by purchaser (optional connectors manufactured
by Mitsubishi Electric)
The purchaser should prepare the cables and press-fitting tools.
Input/output connector model and number
of connectors included in one set
Applicable cable
(recommended cable: UL-1061) and tool
Description of parts
Crimping tool
Our model
(Manufactured by Daiichi
Denshi Kogyo Co., Ltd.)
Cable size
(Manufactured by Daiichi
Denshi Kogyo Co., Ltd.)
2
FX2C-I/O-CON,for flat Set of
Crimp-style connector
357J-4674D main unit
357J-4664N attachment
AWG28(0.1 mm )
1.27 pitch, 20 cores
cable
10 parts FRC2-A020-30S
Housing HU-200S2-001
Crimp-style contact HU-
411S
FX2C-I/O-CON-S, for
non-stranded cable
2
5 sets
5 sets
357J-5538
AWG22(0.3mm )
FX2C-I/O-CON-SA,
for non-stranded
cable
Housing HU-200S2-001
Crimp-style contact HU-
411SA
2
357J-13963
AWG20(0.5mm )
B - 36
3 Connection of Input/Output Lines and Tightening
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
3.3 Connector
A
B
4. Connector already confirmed as applicable (sold at store)
Connectors manufactured by Daiichi Denshi Kogyo Co., Ltd. (shown in 3) and connectors manufactured by
Matsushita Electric Works, Ltd. (shown in following table)
Applicable cable
(recommended cable: UL-1061)
Connector model
Crimping tool
Housing
Contact
AXW1204A
AXW7221
2
AWG22(0.3mm )
AXY52000
2
AWG24(0.2mm )
Semi-cover AXW62001A
Apx.
B - 37
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.1 List of Related Devices
4. Before Programming
This chapter describes several items that should be known before programming. They are:
• Operation of related devices, such as output pulse frequency, operation command flag, current value, and
operation monitor flag.
• Items to be set on the PLC side
• Items to be set on the servo amplifier (drive unit) side
• Items to be observed in programming
4.1
List of Related Devices
→ For details on related devices, refer to Section 4.2 to Section 4.4.
4.1.1 Special Auxiliary Relays
The following table shows the related special auxiliary relays. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
→ For details on the PLSY (FNC 57), PWM (FNC 58), and PLSR (FNC 59) instructions, refer to the
programming manual.
Device number
Corresponding
Function
Attribute
Refer to
*6
*1
instructions
Y000
Y001
Y002
Y003
PLSY,PLSR,DSZR,
DVIT,ZRN,PLSV,
DRVI,DRVA
"Instruction execution complete"
flag
Subsection
4.4.2
M8029
Read only
and so on.
PLSY,PLSR,DSZR,
Read only DVIT,ZRN,PLSV,
DRVI,DRVA
"Instruction execution abnormal
end" flag
Subsection
4.4.2
M8329
Acceleration/deceleration
Subsection
4.3.9
*2
Drivable
Drivable
PLSV
M8338
*3
Operation
Interrupt input specification function
Subsection
4.3.7
*4
DVIT
M8336
*3
enable
PLSY,PLSR,DSZR,
Read only DVIT,ZRN,PLSV,
DRVI,DRVA
"Pulse output monitor" flag
(BUSY/READY)
Subsection
4.4.3
M8340 M8350 M8360 M8370
CLEAR signal output function
Subsection
4.3.4
M8341 M8351 M8361 M8371
M8342 M8352 M8362 M8372
Drivable
Drivable
Drivable
Drivable
Drivable
Drivable
DSZR,ZRN
DSZR
*3
enable
Subsection
4.3.3
*3
Zero return direction specification
Subsection
4.3.1
M8343 M8353 M8363 M8373 Forward limit
M8344 M8354 M8364 M8374 Reverse limit
PLSY,PLSR,DSZR,
DVIT,ZRN,PLSV,
DRVI,DRVA
Subsection
4.3.1
Subsection
4.3.5
*3
M8345 M8355 M8365 M8375
M8346 M8356 M8366 M8376
DSZR
DSZR
DOG signal logic reverse
Subsection
4.3.6
*3
Zero point signal logic reverse
*1.
Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are connected to the
FX3U PLC.
*2.
*3.
*4.
*5.
*6.
*7.
Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
Cleared when PLC switches from RUN to STOP.
Only available for FX3U/FX3UC PLC Ver. 1.30 or later.
For the user interrupt input command, the logical NOT function will not be activated.
Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is connected.
Only available for FX3U and FX3UC PLC Ver.2.20 or later.
B - 38
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.1 List of Related Devices
A
B
Device number
Function
Corresponding
instructions
Attribute
Refer to
*6
*1
Y000
Y001
Y002
Y003
Subsection
4.3.8
*3,*5
M8347 M8357 M8367 M8377
Drivable
DVIT
Interrupt signal logic reverse
PLSY,PWM,PLSR,
Read only DSZR,DVIT,ZRN,
PLSV,DRVI,DRVA
Subsection
4.4.4
M8348 M8358 M8368 M8378 Positioning instruction activation
PLSY,PLSR,DSZR,
DVIT,ZRN,PLSV,
DRVI,DRVA
Subsection
4.3.2
*3
M8349 M8359 M8369 M8379
Drivable
Pulse output stop command
Subsection
4.3.7
*3
*7
*7
*7
*7
Drivable
Drivable
DVIT
M8460 M8461 M8462 M8463
User interrupt input command
Apx.
CLEAR signal device specification
Subsection
4.3.4
*2
*2
*2
*2
DSZR,ZRN
M8464 M8465 M8466 M8467
*3
function enable
*1.
Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are connected to the
FX3U PLC.
*2.
*3.
*4.
*5.
*6.
*7.
Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
Cleared when PLC switches from RUN to STOP.
Only available for FX3U/FX3UC PLC Ver. 1.30 or later.
For the user interrupt input command, the logical NOT function will not be activated.
Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is connected.
Only available for FX3U and FX3UC PLC Ver.2.20 or later.
B - 39
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.1 List of Related Devices
4.1.2 Special Data Registers
The following table shows the related special data registers. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Data
length value
Initial Corresponding
Function
Refer to
Y002*5
Y003*1
instructions
Y000
Y001
interruptinput
specification
Subsection
4.3.7
D8336*2
16-bit
32-bit
-
DVIT
Low-
order
Low-
Low-
order
Low-
order
D8340
D8341
D8350
D8351
D8360
D8361
D8370
D8371
Current value
register
[PLS]
DSZR,DVIT,
ZRN,PLSV,
DRVI,DRVA
order
Subsection
4.4.1
0
0
High-
order
High-
order
High-
order
High-
order
DSZR,DVIT,
ZRN,PLSV,
DRVI,DRVA
Bias speed
[Hz]
Subsection
4.2.6
D8342
D8352
D8362
D8372
16-bit
Low-
order
Low-
order
Low-
order
Low-
order
D8343
D8344
D8353
D8354
D8363
D8364
D8373
D8374
Maximum
speed
[Hz]
DSZR,DVIT,
ZRN,PLSV,
DRVI,DRVA
Subsection
4.2.5
32-bit 100,000
High-
order
High-
order
High-
order
High-
order
Creep speed
[Hz]
Subsection
4.2.4
D8345
D8355
D8365
D8375
16-bit
32-bit
1000
DSZR
Low-
order
Low-
order
Low-
order
Low-
order
D8346
D8347
D8356
D8357
D8366
D8367
D8376
D8377
Zero return
speed
[Hz]
Subsection
4.2.3
50,000
DSZR
High-
order
High-
order
High-
order
High-
order
DSZR,DVIT,
ZRN,PLSV*3,
DRVI,DRVA
Acceleration
time
[ms]
Subsection
4.2.7
D8348
D8358
D8368
D8378
16-bit
16-bit
100
100
-
DSZR,DVIT,
ZRN,PLSV*3,
DRVI,DRVA
Deceleration
time
[ms]
Subsection
4.2.8
D8349
D8359
D8369
D8379
CLEAR
signal device 16-bit
specification
Subsection
4.3.4
D8464*4
D8465*4
D8466*4
D8467*4
DSZR,ZRN
*1.
*2.
*3.
Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are connected to the
FX3U PLC.
Only available for FX3U/FX3UC PLC Ver. 1.30 or later.
However, the user interrupt input command can be specified only if the FX3U/FX3UC PLC Ver.2.20 or later is used.
This instruction is valid only during acceleration/deceleration supported in the FX3U/FX3UC PLC Ver. 2.20 or later and
FX3G PLC.
*4.
*5.
Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is connected.
B - 40
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.2 Setting of Various Items Regarding Speeds
A
B
4.2
Setting of Various Items Regarding Speeds
Specify the output pulse frequency using the operand of each instruction or the related device to determine
the output pulse frequency, zero return speed, or creep speed.
4.2.1 Setting of Various Items Regarding Instructions and Speeds
1. Interrupt Positioning (DVIT) instruction, drive to increment (DRVI) instruction, and drive to
absolute (DRVA) instruction
For these instructions, it is necessary to specify the maximum speed, bias speed, acceleration time, and
deceleration time using the related devices in addition to the output pulse frequency specified by the operand
of the instruction.
Apx.
→ For operation of DVIT instruction, refer to Chapter 9.
→ For operation of DRVI or DRVA instruction, refer to Chapter 8.
For details on each setting item, refer to Subsection 4.2.2 , and Subsection 4.2.5 to Subsection 4.2.8
→
Maximum speed
Initial value: 100,000 Hz
Output pulse frequency
S2
Actual
deceleration time
Actual
acceleration time
Number of S1
output pulses
Bias speed
Initial value: 0 Hz
Bias speed
Acceleration
time
Deceleration
time
Current
position
Target
position
Initial value: 100 ms
Initial value: 100 ms
2. Variable speed Pulse Output (PLSV) instruction
For the variable speed pulse output (PLSV) instruction, it is necessary to specify the maximum speed, bias
speed, acceleration time, and deceleration time using the related devices in addition to the output pulse
frequency specified by the operand of the instruction. However, note that the acceleration time and the
deceleration time are only valid during acceleration/deceleration (M8338 = ON).
→ For operation of PLSV instruction, refer to Chapter 10.
→ For details on each setting item, refer to Subsection 4.2.2 , and Subsection 4.2.5 to Subsection
4.2.8.
1) When acceleration/deceleration is being performed (M8338 = ON)
Maximum speed
Initial value: 100,000 Hz
Actual
deceleration time
Actual
acceleration time
Output pulse
frequency
S
Bias speed
Initial value: 0 Hz
Bias speed
Acceleration
time
Deceleration
time
Current
position
Initial value: 100 ms
Initial value: 100 ms
2) When acceleration/deceleration is not performed (M8338 = OFF)
Maximum speed
Initial value: 100,000 Hz
Output pulse
If the frequency value is
less than the bias speed
value, the frequency will
not be output.
frequency
S
Bias speed
Initial value: 0 Hz
Bias speed
B - 41
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.2 Setting of Various Items Regarding Speeds
3. Zero return instruction with DOG search function (DSZR)
For this instruction, it is necessary to specify the maximum speed, bias speed, acceleration time, deceleration
time, zero return speed, and creep speed using the related devices.
→ For operation of DSZR instruction, refer to Section 6.2.
→ For details on each setting item, refer to Subsection 4.2.3 to Subsection 4.2.8.
Deceleration time
Acceleration time
Initial value:
100 ms
Initial value:
100 ms
Maximum speed
Initial value:
100,000 Hz
Zero return speed
Initial value: 50,000 Hz
Current value register = "0"
Creep speed
Initial value:
1,000 Hz
Bias speed
Initial value: 0 Hz
Current position
DOG
Rear end
Front end
Zero-phase signal
(X000 - X007)
1 ms or less
CLEAR signal
20 ms + 1 scan time (ms)
4. Zero return (ZRN) instruction
For this instruction, it is necessary to specify the maximum speed, bias speed, acceleration time, and
deceleration time using the related devices in addition to the zero return speed and the creep speed specified
by the operand of the instruction.
→ For operation of ZRN instruction, refer to Section 6.1.
→ For details on each setting item, refer to Subsection 4.2.5 to Subsection 4.2.8.
Deceleration time
Acceleration time
Initial value:
100 ms
Initial value:
100 ms
Maximum speed
Initial value:
100,000 Hz
Zero return speed
S
1•
Creep speed
S
2•
Bias speed
Initial value: 0 Hz
DOG
Current position
Rear end
Front end
CLEAR signal
1 ms or less
20 ms + 1 scan time (ms)
B - 42
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.2 Setting of Various Items Regarding Speeds
A
B
4.2.2 Setting of Output Pulse Frequency (DVIT, PLSV, DRVI, and DRVA Instructions)
Set the output pulse frequency using the operand of each instruction. In this case, the setting range depends
on the instruction (see the following table).
However, even in the setting range of each instruction, if the set value of the output pulse frequency is more
than the maximum speed value, the operation will be performed at the maximum speed. If the set value of
the output pulse frequency is less than the bias speed value, the operation will be performed at the bias
speed.
→ For operation of DVIT instruction, refer to Chapter 9.
→ For operation of PLSV instruction, refer to Chapter 10.
→ For operation of DRVI or DRVA instruction, refer to Chapter 8.
Setting range
Apx.
Instruction Operand
Instruction format
16-bit operation 32-bit operation
(Hz)
(Hz)
DVIT
*1
10 to 32767
S
2
10 to 200,000
DVIT
S
1
•
S
2
•
D
D
D
D
1•
1•
1•
1
•
D
D
D
D
2•
2•
2•
2
•
*3
instruction
*2
PLSV
instruction
-32768 to -1,
+1 to 32767
-200,000 to -1,
PLSV
S•
S
*1
+1 to 200,000
DRVI
instruction
*1
10 to 32767
10 to 32767
S2
10 to 200,000
DRVI
S
S
1
•
•
S
S
2
•
•
DRVA
instruction
*1
S2
10 to 200,000
DRVA
1
2
*1. If FX3U-2HSY-ADP is not used, note that the frequency value cannot be more than 100,000 Hz.
*2. If FX3U-2HSY-ADP is not used, note that the frequency value cannot be less than -100,000 Hz.
*3. Only available for FX3U and FX3UC PLCs.
Caution:
•
To use the main unit (transistor output), set the output pulse frequency (absolute value) to 100,000 Hz or less.
If more than 100,000 Hz is output from the transistor output of the main unit to perform operation, it may cause PLC
failure.
•
Set the output pulse frequency so that the output pulse frequency value is less than the maximum frequency value
of the servo amplifier (driver unit).
B - 43
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.2 Setting of Various Items Regarding Speeds
4.2.3 Setting of Zero Return Speed (DSZR/ZRN Instruction)
Use the related device or the operand of the instruction to set the zero return speed.
The zero return speed setting range is shown in the following table.
Be sure to set the zero return speed so that the relation with the other speeds can be "bias speed ≤ zero
return speed ≤ maximum speed". If the set value of the zero return speed is more than the maximum speed
value, operation will be performed at the maximum speed.
→ For operation of DSZR instruction, refer to Section 6.2.
→ For operation of ZRN instruction, refer to Section 6.3.
Setting range
Operand or
16-bit
operation operation
32-bit
Instruction
related
device
Instruction format
(Hz)
(Hz)
D8347,D8346
D8357,D8356
D8367,D8366
D8377,D8376
D
1
=Y000
=Y001
=Y002
=Y003
DSZR
instru-
ction
*1
D1
10 to 200,000
DSZR
ZRN
S
S
1
•
•
S
S
2
•
•
D
1
•
D
2
•
*2
*3
Initial value: 50000
D1
D1
10 to
10 to
32767
ZRN instruction
1
2
S
3
•
D•
S1
*1
200,000
*1. If FX3U-2HSY-ADP is not used, note that this value cannot be more than 100,000 Hz.
*2. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*3. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
Caution:
•
When using the transistor outputs of the main unit, set the pulse frequency for the zero return speed to less than
100 kHz.
If a pulse higher than 100 kHz is output from a transistor output of the main unit to perform an operation, PLC failure
may occur.
•
Set the zero return speed so that the set value of the zero return speed is less than the maximum frequency value
of the servo amplifier (driver unit).
B - 44
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.2 Setting of Various Items Regarding Speeds
A
B
4.2.4 Setting of Creep Speed (DSZR/ZRN Instruction)
Use the related device or the operand of the instruction to set the creep speed. The creep speed setting
range is shown in the following table.
Be sure to set the creep speed so that the relation with the other speeds is "bias speed ≤ creep speed ≤
32767 Hz*1".
→ For operation of DSZR instruction, refer to Section 6.2.
→ For operation of ZRN instruction, refer to Section 6.3.
Setting range
Operand or
16-bit
operation operation
(Hz) (Hz)
32-bit
Instruction
related
device
Instruction format
Apx.
D8345
D8355
D8365
D8375
D
1
=Y000
=Y001
=Y002
=Y003
DSZR
instru-
ction
D1
10 to 32767
Initial value: 1000
DSZR
ZRN
S
S
1
•
•
S
S
2
•
•
D
1
•
D
2
•
*2
*3
D1
D1
ZRN instruction
10 to 32767
S2
1
2
S
3
•
D•
*1. If the maximum speed is set to less than 32767 Hz, note that this value (32767 Hz) will automatically
be changed to the maximum speed.
*2. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*3. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
4.2.5 Setting of Maximum Speed
Set the maximum speed to determine the upper limit value for the output pulse frequency and the zero return
speed.
Use the devices shown in the following table to determine the maximum speed for each pulse output
destination device.
Setting range
Pulse output
destination device
Maximum
speed
Initial value
Transistor output of main
unit
High-speed output special
adapter
Y000
Y001
D8344,D8343
D8354,D8353
D8364,D8363
10 to 100,000 Hz:
If the value is set to 9 Hz or
less, the maximum speed will less, the maximum speed will
be automatically set to 10 Hz. be automatically set to 10 Hz.
10 to 200,000 Hz:
If the value is set to 9 Hz or
100,000Hz
*1
Y002
*2
D8374,D8373
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
Caution:
•
To use the main unit (transistor output), set the output pulse frequency (absolute value) to 100,000 Hz or less.
If more than 100,000 Hz is output from the transistor output of the main unit to perform operation, it may cause PLC
failure.
•
Set the output pulse frequency so that the output pulse frequency value is less than the maximum frequency value
of the servo amplifier (driver unit).
B - 45
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.2 Setting of Various Items Regarding Speeds
4.2.6 Setting of Bias Speed
To control the stepping motor using each instruction, set the bias speed considering the resonance range of
the stepping motor and the automatic start frequency.
Use the devices shown in the following table to determine the bias speed for each pulse output destination
device.
Pulse output
destination device
Bias speed Initial value
Setting range
Y000
Y001
D8342
D8352
1/10 or less of maximum speed:
If the value is set to more than 1/10 of the maximum speed,
the bias speed will be automatically set to 1/10 of the
maximum speed.
0Hz
*1
D8362
Y002
*2
D8372
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
4.2.7 Setting of Acceleration Time
Set the time required for acceleration from the bias speed to the maximum speed.
If the output pulse frequency is less than the maximum speed, the actual acceleration time will be shorter than
the set acceleration time.
If the variable speed pulse output (PLSV) instruction is used, the set acceleration time is only valid during
acceleration/deceleration (M8338 = ON)*3.
Use the devices shown in the following table to determine the acceleration time for each pulse output
destination device.
Pulse output
destination device
Acceleration
Time
Initial value
Setting range
Y000
Y001
D8348
D8358
D8368
50 to 5,000 ms:
If the value is set to 49 ms or less, the acceleration time will
be automatically set to 50 ms. If the value is set to 5,001 ms
or more, the acceleration time will be automatically set to
5,000 ms.
100ms
*1
Y002
*2
D8378
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
B - 46
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.2 Setting of Various Items Regarding Speeds
A
B
4.2.8 Setting of Deceleration Time
Set the time required for deceleration from the maximum speed to the bias speed.
If the output pulse frequency is less than the maximum speed, the actual deceleration time will be shorter
than the set deceleration time.
If the variable speed pulse output (PLSV) instruction is used, the set deceleration time is only valid during
acceleration/deceleration (M8338 = ON)*3.
Use the devices shown in the following table to determine the deceleration time for each pulse output
destination device.
Pulse output
destination device
Deceleration
Time
Initial value
Setting range
Apx.
Y000
Y001
D8349
D8359
D8369
50 to 5,000 ms:
If the value is set to 49 ms or less, the deceleration time will
be automatically set to 50 ms. If the value is set to 5,001 ms
or more, the deceleration time will be automatically set to
5,000 ms.
100ms
*1
Y002
*2
D8379
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
B - 47
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.3 Various Special Relays for Operation Commands
4.3
Various Special Relays for Operation Commands
4.3.1 Forward Rotation Limit and Reverse Rotation Limit
When using the servo motor, the forward rotation limit and the reverse rotation limit can be set for the servo
amplifier.
To use the DOG search function for zero return, or to set the forward rotation limit or the reverse rotation limit
for operations other than zero return using the PLC, set the forward rotation limit 1 (LSF) and reverse rotation
limit 1 (LSR) for the PLC so that these limit switches can be activated before the forward rotation limit 2 or
reverse rotation limit 2 of the servo amplifier.
As shown in the following figure, interlock the forward rotation limit 1 (LSF) with the forward limit relay, and the
reverse rotation limit 1 (LSR) with the reverse limit relay. If the forward limit relay or the reverse limit relay turns
ON, the motor will perform operation depending on the output instruction as shown in the following table.
Reverse rotation limit 2 Reverse rotation limit 1 Forward rotation limit 1 Forward rotation limit 2
(Servo amplifier side)
(Programmable
controller side)
LSR
(Programmable
controller side)
LSF
(Servo amplifier side)
Servo motor
Reverse rotation
Forward rotation
Forward rotation limit 1
Reverse rotation limit 1
M8343
M8344
Forward limit relay for Y000
Reverse limit relay for Y000
Use the relays shown in the following table to determine the forward rotation limit and the reverse rotation limit
for each pulse output destination device (Y000, Y001, Y002, Y003).
Corresponding instruction and stop
Pulse output
DSZR, DVIT*4, ZRN,
PLSV(M8338*3 =ON), DRVI,
and DRVA instructions
Forward limit
relay
Reverse limit
relay
destination
device
PLSV instruction
(M8338*3 =OFF)
Y000
Y001
M8343
M8353
M8363
M8344
M8354
M8364
If the corresponding rotation
limit relay is turned on, the
pulse output (operation) will
immediately stop.
If the corresponding rotation
limit relay is turned on, the
speed will decelerate, and the
operation will stop.
*1
Y002
*2
M8373
M8374
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. M8338 is supported in the FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC. If an FX3UC PLC is used
and its version is below Ver.2.20, the PLSV instruction will perform operation in the M8338 = OFF
mode (will perform operation without acceleration/deceleration).
*4. Only available for FX3U and FX3UC PLCs.
Note:
If the forward rotation limit (LSF) and the reverse rotation limit (LSR) cannot be set, observe the following
items:
• Even if forward rotation limit 2 or reverse rotation limit 2 turns ON and the servo motor is automatically
stopped, the positioning instruction currently being activated cannot recognize the motor being stopped.
Therefore, pulses will be continuously output until the instruction is deactivated.
• The DOG search function of the DSZR instruction (zero return instruction with DOG search function)
cannot be used.
B - 48
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.3 Various Special Relays for Operation Commands
A
B
4.3.2 Immediate Stop of Pulse Output (Pulse Output Stop Command Relay)
During the execution of a positioning instruction, if the pulse output stop command relay is turned on, the
pulses being output will immediately stop.
To output pulses again, turn off the pulse output stop command relay, deactivate (turn off) the positioning
instruction, and then activate the instruction again (turn it on again).
The following table shows the pulse output stop command relay of each pulse output destination device.
Pulse output destination
device
Pulse output stop
command relay
Operation
Y000
Y001
M8349
M8359
M8369
During pulse outputting operation, if the pulse output stop
command relay of the corresponding pulse output
destination device is turned on, the pulse outputting
operation will immediately stop.
Apx.
*1
Y002
*2
M8379
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
Note:
Use these relays only if immediate stop is absolutely needed to avoid dangers. Since the motor is
immediately stopped, use of these relays may damage the system. For normal STOP operation (decelerate
to stop), use the "instruction OFF" function or "forward/reverse limit relay."
However, note that if the PLSV instruction is used together with the "instruction OFF" function or the "forward/
reverse limit relay" in the M8338 = OFF mode (operation without acceleration/deceleration), operation will
immediately stop.
4.3.3 Designation of Zero Return Direction (DSZR/ZRN Instruction)
Use the DSZR instruction (zero return instruction with DOG search function) or ZRN instruction (zero return
instruction) to specify the zero return direction*1. The zero return direction depends on the instruction.
→ For operation of DSZR instruction, refer to Section 6.2.
→ For operation of ZRN instruction, refer to Section 6.3.
Reverse rotation limit 2 Reverse rotation limit 1 Forward rotation limit 1 Forward rotation limit 2
(Servo amplifier side)
(Programmable
controller side)
LSR
(Programmable
controller side)
LSF
(Servo amplifier side)
Servo motor
Reverse rotation
Forward rotation
*1. If the DSZR instruction (zero return instruction with DOG search function) is used, zero return will be
performed in the direction of the first operation.
1. Zero return instruction with DOG search function (DSZR instruction)
Turn on or off the zero return direction specification relay shown in the following table to specify the zero
return direction.
Pulse output
destination device
Zero return direction
specification relay
Description of setting
Y000
Y001
M8342
M8352
M8362
To perform zero return in the forward
rotation direction:Turn on the relay.
To perform zero return in the reverse
rotation direction:Turn off the relay.
*1
Y002
*2
M8372
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
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4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.3 Various Special Relays for Operation Commands
2. Zero return instruction (ZRN instruction)
Zero return will be performed in the reverse rotation direction only.
(During zero return, the value indicated by the current value register will be decreased.)
To perform zero return in the forward rotation direction using the ZRN instruction (zero return instruction):
To perform zero return in the forward rotation direction, create a program to control the output (Y) relay set as
a "rotational direction signal" as follows:
→ For details on programming, refer to Section 4.7.
→ To use the main unit (transistor output), refer to Section 4.8.
→ To use a high-speed output special adapter, refer to Section 4.9.
1) Turn on Yꢁꢁꢁ (rotational direction signal).
2) Refresh Yꢁꢁꢁ output using the REF (FNC50) instruction.
3) Execute the ZRN instruction (zero return instruction).
4) Using the execution completion flag (M8029) of the ZRN instruction (zero return instruction), reset
Yꢁꢁꢁ (rotational direction signal).
Example program:
The following program uses Y004 as the rotational direction signal for Y000.
Command
input
RST
RST
SET
Y000
M10
M11
Y004
K8
M8340
Turns on (sets) Y004 as the
rotational direction signal of Y000
(pulse output destination).
a)
Y000 output
pulse monitor
FNC 50
REFP
Refreshes Y000 to Y007.
Executes ZRN instruction.
b)
FNC156
DZRN
c)
d)
S
1•
S
2•
S
3•
Y000
Y004
M10
Y004
M11
M8029
M8329
Resets the rotational direction
signal (Y004) using the instruction
execution complete flag.
RST
SET
RST
SET
Origin data reading completion flag
Resets the rotational direction signal
(Y004) using the instruction
execution abnormal end flag.
Abnormal end of zero return
B - 50
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.3 Various Special Relays for Operation Commands
A
B
4.3.4 CLEAR Signal Output (DSZR/ZRN Instruction)
The DSZR instruction (zero return instruction with DOG search function) and ZRN instruction (zero return
instruction) can stop the workpiece at the origin, and can output the CLEAR signal.
If it is necessary to output the CLEAR signal after zero return, turn on the "CLEAR signal output function
enable" relay. The following table shows the "CLEAR signal output function enable" relay of each pulse
output destination device (Y000, Y001, Y002, Y003).
Use an FX3U/FX3UC PLC Ver. 2.20 or later or FX3G PLC to specify the CLEAR signal output device.
→ For operation of DSZR instruction, refer to Section 6.2.
→ For operation of ZRN instruction, refer to Section 6.3.
1. If it is not necessary to use the CLEAR signal device specification function, or if an FX3UC PLC
below Ver. 2.20 is used:
Apx.
Status of "CLEAR
Status of "CLEAR signal
device specification
Pulse output
destination
device
signal output
function enable"
relay
CLEAR signal device
number
*3
function enable" relay
Y000
Y001
M8341=ON
M8351=ON
M8361=ON
M8464=OFF
M8465=OFF
M8466=OFF
Y004
Y005
Y006
*1
Y002
*2
M8371=ON
M8467=OFF
Y007
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. Use an FX3U/FX3UC PLC Ver. 2.20 or later or FX3G PLC to use the "CLEAR signal device specification
function enable" relay.
2. If it is necessary to use the CLEAR signal device specification
function:
Turn on "CLEAR signal device specification function enable" relay to
specify the CLEAR signal output device (output Y) for the pulse output destination device using the CLEAR
signal device specification register.
CLEAR signal device number
Pulse output
destination signal output function
Status of "CLEAR
Status of "CLEAR signal
device specification
function enable" relay
CLEAR signal device Initial value (CLEAR
device
enable" relay
specification register
signal device)
Y000
Y001
M8341=ON
M8351=ON
M8361=ON
M8464=ON
M8465=ON
M8466=ON
D8464
-
-
-
D8465
*1
D8466
Y002
*2
M8371=ON
M8467=ON
D8467
-
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
→ For the CLEAR signal device specification method, refer to the next page.
If it is necessary to use a high-speed output special adapter:
The output devices initially set for the CLEAR signal of the DSZR/ZRN instruction are the same output
devices as the "direction signal / reverse pulse train (rotation direction signals)" of the high-speed output
special adapters. Be sure to specify output numbers of other transistor outputs using the CLEAR signal
device specification function.
B - 51
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.3 Various Special Relays for Operation Commands
CLEAR signal device specification method:
1) Write the CLEAR signal output (Y) device number in the "CLEAR signal device specification" register with
a hexadecimal number (expressed in octal numbers).
e.g. setting H0010 means Y010. When setting H0008, an operation error occurs because Y008 does not
exist.
2) Turn on the "CLEAR signal output function enable" relay and "CLEAR signal device specification function
enable" relay to specify the CLEAR signal device.
3) Execute the DSZR instruction (zero return instruction with DOG search function) or ZRN instruction (zero
return instruction).
Example program:
The following figure shows a program that can specify Y010 as the CLEAR signal output device for Y000
(pulse output destination device):
M8000
Specifies the Y010 as the CLEAR signal output device for
Y000 (pulse output destination device).
FNC 12
MOVP
H0010 D8464
M8464
RUN
monitor
Turns on "CLEAR signal device specification function enable"
relay for Y000 (pulse output destination device).
Turns on the "CLEAR signal output function enable" relay.
M8341
4.3.5 Change in Logic of Near-Point (DOG) Signal (DSZR Instruction)
Turn on or off the "DOG signal logic reverse" relay to specify the logic of the near-point (DOG) signal of the
DSZR instruction (zero return instruction with DOG search function). Use the operand (
instruction to specify the near-point (DOG) signal.
S1
) of the
→ For operation of DSZR instruction, refer to Section 6.2.
Pulse output
destination device
"DOG signal logic
reverse" relay
Description of setting
Y000
Y001
M8345
M8355
M8365
OFF:
ON:
Positive logic (Turning on the input will turn on the near-
point signal.)
Negative logic (Turning off the input will turn on the near-
point signal.)
*1
Y002
*2
M8375
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
4.3.6 Change in Logic of Zero-Phase Signal (DSZR Instruction)
Turn on or off the "Zero point signal logic reverse" relay to specify the logic of the zero-phase signal of the
DSZR instruction (zero return instruction with dog search function). Use the operand (
instruction to specify the zero-phase signal.
S2
) of the
→ For operation of DSZR instruction, refer to Section 6.2.
Pulse output
destination device
"Zero point signal
logic reverse" relay
Description of setting
Y000
Y001
M8346
M8356
M8366
OFF:
ON:
Positive logic (Turning on the input will turn on the zero-
phase signal.)
Negative logic (Turning off the input will turn on the zero-
phase signal.)
*1
Y002
*2
M8376
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
B - 52
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.3 Various Special Relays for Operation Commands
A
B
4.3.7 Designation of Interrupt Input Signal for DVIT Instruction
The interrupt input signal of the interrupt positioning (DVIT) instruction depends on the pulse output
destination device as shown in the following table.
Use an FX3UC PLC Ver. 1.30 or later to use the interrupt input specification function.
Use an FX3U/FX3UC PLC Ver. 2.20 or later to set the user interrupt input command.
→ For operation of DVIT instruction, refer to Chapter 9.
Interrupt input signal
Pulse output
destination
device
If it is not necessary to use the
interrupt input specification function If it is necessary to use the interrupt input specification
(M8336 = OFF), or if an FX3UC PLC
below Ver. 1.30 is used
function (M8336 = ON)
Apx.
D8336=H{ { { {
Y000
Y001
Y002
X000
X001
X002
Interrupt input for Y000
(pulse output destination device)
Interrupt input for Y001
(pulse output destination device)
Interrupt input for Y002
(pulse output destination device)
Interrupt input for Y003
(pulse output destination device)
*1
X003
Y003
*1. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
Designation of interrupt input using M8336 interrupt input
specification function:
1) Turn on M8336.
2) Set the interrupt input number (X000 to X007) in D8336, or
specify the user interrupt input command*1.
→ For specifying the settings, refer to the following description.
D8336=H{ { { {
Interrupt input for Y000
(pulse output destination device)
Interrupt input for Y001
(pulse output destination device)
Interrupt input for Y002
(pulse output destination device)
Interrupt input for Y003
(pulse output destination device)
Setting value
Description of setting
Specifies X000 for the interrupt input signal.
0
1
Specifies X001 for the interrupt input signal.
7
Specifies X007 for the interrupt input signal.
Specifies the user interrupt input command*1 for the interrupt input signal.
Pulse output destination device
User interrupt input command
Y000
Y001
Y002
M8460
M8461
M8462
M8463
*1
8
*2
Y003
*3
9 to E
Do not specify these values.
Set "F" for a pulse output destination device if the device is not used for the interrupt
positioning (DVIT) instruction.
F
B - 53
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FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.3 Various Special Relays for Operation Commands
*1. A device can only be specified if an FX3U/FX3UC PLC Ver. 2.20 or later is used.
When using an FX3UC PLC below Ver. 2.20, if "8" is set and then the specified interrupt positioning
(DVIT) instruction turns ON, an operation error (error code: K6763) will occur, and the instruction will
not cause any operation.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. After setting a number in the range of 9 to E for the interrupt input signal, if the corresponding interrupt
positioning (DVIT) instruction turns ON, an operation error (error code: K6763) will occur, and the
instruction will not cause any operation.
Example program:
The following program specifies the interrupt input signal for each pulse output destination device as shown in
the following table.
Pulse output
destination device
Interrupt input
signal
M8000
Setting value
FNC 12
MOVP
HFF83 D8336
M8336
RUN monitor
Y000
Y001
Y002
X003
3
8
F
F
M8461
Unused
Unused
*1
Y003
*1. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
4.3.8 Change in Logic of interrupt input Signal (DVIT Instruction)
Turn the "Interrupt signal logic reverse" relay ON or OFF to specify the logic of the interrupt input signal of the
interrupt positioning (DVIT) instruction.
→ For operation of DVIT instruction, refer to Chapter 9.
→ For details on the interrupt input signal designation method, refer to
Subsection 4.3.7.
Pulse output
destination device
"Interrupt signal logic
reverse" relay
Description
Y000
Y001
Y002
M8347
M8357
M8367
M8377
OFF: Positive logic (Turning the input ON will turn on the
interrupt input signal.)
ON: Negative logic (Turning the input OFF will turn on the
interrupt input signal.)
*1
Y003
*1. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
Caution:
If a user interrupt input command (M8460 to M8463) is specified in the interrupt input signal, the logic of the
user interrupt input command cannot be specified. This is because turning on the user interrupt input
command will turn on the interrupt input signal.
B - 54
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.3 Various Special Relays for Operation Commands
A
B
4.3.9 Acceleration/Deceleration by PLSV Instruction
Using an FX3U/FX3UC PLC Ver. 2.20 or later or FX3G PLC, if M8338 (acceleration/deceleration operation) is
turned on, the variable speed pulse output (PLSV) instruction will be activated to accelerate/decelerate the
operation.
This means that if the command value of the output pulse frequency is changed, the operation will be
accelerated or decelerated to the changed output pulse frequency depending on the specified acceleration/
deceleration time.
→ For operation of PLSV instruction, refer to Chapter 10.
Apx.
Maximum speed
Initial value: 100,000 Hz
Output
pulse
frequency
Bias speed
Initial value: 0 Hz
Bias speed
Acceleration
time
Deceleration time
Initial value: 100 ms Initial value: 100 ms
Caution:
• To enable acceleration/deceleration, turn on M8338 first, and then activate the variable speed pulse output
(PLSV) instruction.
• If acceleration/deceleration is enabled, the variable speed pulse output (PLSV) instructions of all the pulse
output destination devices will accelerate/decelerate with the same time. This means that acceleration/
deceleration cannot be specified separately for each pulse output destination device.
B - 55
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.4 Current Value and Flag for Monitoring of Operation
4.4
Current Value and Flag for Monitoring of Operation
4.4.1 Current Value
During positioning operation, use the current value register to check the current value positioning address.
The current value will be increased or decreased depending on the rotation direction. The following table
shows the current value register (32-bit) of each pulse output destination device.
Pulse output destination device
Current value register (32-bit)
D8341,D8340
Y000
Y001
D8351,D8350
*1
D8361,D8360
Y002
*2
D8371,D8370
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
Caution:
The current value changes between -2,147,483,648 and 2,147,483,647. However, if an overflow or
underflow occurs, the value changes as shown below. Check the value carefully.
• If the current value is increased past the maximum value, the minimum value will be indicated.
• If the current value is decreased below the minimum value, the maximum value will be indicated.
Necessity of zero return:
If the specified forward rotation pulse or reverse rotation pulse is output, the current value register will
increase or decrease the current value. Upon turning off the power of the PLC, however, the current value
stored in the current value register will be erased. For this reason, after turning the power on again, be sure
to adjust the current value of the current value register to the current position of the machine. For this
adjustment, use the zero return instruction or the Absolute Current Value Read instruction (absolute position
detection system) shown below:
→ For details on DSZR instruction, refer to Section 6.2.
→ For details on ZRN instruction, refer to Section 6.3.
→ For details on ABS instruction, refer to Chapter 7.
Instruction
DSZR(FNC150)
ZRN(FNC156)
Description
Zero return instruction with DOG search function
Zero return instruction (without DOG search function)
Absolute Current Value Read instruction
*3
ABS(FNC155)
*3. The absolute position detection function applies for the MR-HꢁA, MR-J2ꢁA MR-J2SꢁA, or MR-
J3ꢁA servo amplifiers. If one of these servo amplifiers is used and mechanical zero return is
performed only once just before turning off the power, the current value will not be erased even after
power-off.
After turning on the power again, read out the stored current value using the ABS (FNC155)
instruction of the PLC. This means that the current value can be obtained without performing zero
return just after turning on the power again.
B - 56
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.4 Current Value and Flag for Monitoring of Operation
A
B
4.4.2 Completion of Instruction Execution ("Instruction execution complete" Flag,
"Instruction execution abnormal end" Flag)
Use the "Instruction execution complete" flag or "Instruction execution abnormal end" flag to check whether
execution of the positioning instruction has been completed properly.
The "Instruction execution complete" flag and "Instruction execution abnormal end" flag are turned on or off
after each instruction. Use these flags just after the execution of each instruction.
→ For programming details, refer to Subsection 4.7.4.
• "Instruction execution complete" flag: Will be turned on if the instruction is executed properly.
• "Instruction execution abnormal end" flag: Will be turned on if the instruction is not executed properly.
Apx.
Caution:
If the "Instruction execution complete" flag or "Instruction execution abnormal end" flag is turned on, then the
execution of the instruction (pulse outputting operation, etc.) is complete. However, it is not certain whether
the servo motor has stopped or not. Check the "positioning completion" signal of the servo amplifier (drive
unit) to determine whether the servo motor has stopped.
4.4.3 "Pulse Output Monitor" (BUSY/READY) Flag
Use the "pulse output monitor" (BUSY/READY) flag to check whether pulses are being output to the pulse
output destination device. The following table shows the "pulse output monitor" (BUSY/READY) flag of each
pulse output destination device.
Pulse output
destination device
"Pulse output monitor"
(BUSY/READY) flag
Status of flag and pulse
Y000
Y001
M8340
M8350
M8360
Outputting pulse (BUSY):Flag = ON
Pulse outputting stopped (READY):Flag = OFF
*1
Y002
*2
M8370
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
4.4.4 "Positioning Instruction Activation" Flag
Use the "positioning instruction activation" flag of each pulse output destination device to check whether or
not a positioning instruction is being executed for the pulse output destination device. Use this flag to prevent
simultaneous activation of two or more positioning instructions for the same pulse output destination device.
Pulse output
destination device
"Positioning instruction
Activation" flag
Status of flag and pulse
Y000
Y001
M8348
M8358
M8368
ON: The positioning instruction is being activated for the
corresponding pulse output destination.
(Even after instruction execution is completed, if the
instruction is still being activated, the flag will not be
turned off.)
*1
Y002
*2
OFF: The positioning instruction is not being activated for the
corresponding pulse output destination.
M8378
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
B - 57
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.5 Setting of Various Items on PLC Side
4.5
Setting of Various Items on PLC Side
4.5.1 Setting of Common Items Using Program
For each pulse output destination device (Y000, Y001, Y002*1, Y003*2), set the items shown in the following
table without using the operand of the instruction.
Setting device
Instruction
Setting
item
Refer to
*1
*2
Y000
Y001
DSZR ZRN ABS TBL PLSV DVIT DRVI DRVA
Y002
Y003
Items related to speed
Subsec-
tion
4.2.5
Maximum
D8344, D8354, D8364, D8374,
D8343 D8353 D8363 D8373
-
3
3
3
3
3
3
3
3
3
3
-
3*4
3*4
3
3
3
3
3
3
-
3
3
3
3
-
3
3
3
3
-
*3
speed
Subsec-
tion
4.2.6
Bias speed D8342 D8352 D8362 D8372
-
-
-
-
-
Subsec-
tion
4.2.7
Acceleration
3*4 3*5
3*4 3*5
D8348 D8358 D8368 D8378
time
Subsec-
tion
4.2.8
Deceleration
D8349 D8359 D8369 D8379
time
Subsec-
tion
4.2.3
Zero return
D8347, D8357, D8367, D8377,
D8346 D8356 D8366 D8376
-
-
-
-
*3
speed
Subsec-
tion
4.2.4
Creep speed D8345 D8355 D8365 D8375
-
-
-
-
Items needed for (DSZR) zero return instruction with DOG search function and (ZRN) zero return instruction)
Subsec-
tion
4.3.3
Zero return
direction
3*6
3
3
3
-
M8342 M8352 M8362 M8372
M8341 M8351 M8361 M8371
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3
3
3
3
3
Subsec-
tion
4.3.4
CLEAR
signal output
CLEAR
signal device
Subsec-
tion
4.3.4
M8464 M8465 M8466 M8467
D8464 D8465 D8466 D8467
*7
change
Subsec-
tion
4.3.5
Logic of
near-point
signal
M8345 M8355 M8365 M8375
M8346 M8356 M8366 M8376
Logic of
zero-phase
Subsec-
tion
4.3.6
signal
Items needed for variable speed pulse output (PLSV) instruction
Acceleration/
Subsec-
tion
4.3.9
deceleration
-
-
-
-
-
-
-
-
-
-
3
M8338
*5
Operation
*10
Items needed for interrupt positioning (DVIT) instruction
Interrupt
Subsec-
tion
4.3.7
input signal
M8336
D8336
3
*4, *10
-
-
-
3
device
*8
change
B - 58
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.5 Setting of Various Items on PLC Side
A
B
Setting device
Setting
Instruction
Refer to
*1
*2
item
Y000
Y001
DSZR ZRN ABS TBL PLSV DVIT DRVI DRVA
Y002
Y003
User
Subsec-
tion
4.3.7
interrupt
input
3
M8460 M8461 M8462 M8463
-
-
-
-
-
-
-
-
-
-
3
3
*4, *10
*8
command
Subsec-
tion
4.3.8
Logic of
interruptinput M8347 M8357 M8367 M8377
signal
-
-
3
Forward limit, reverse limit, and immediate stop of pulse output
Subsec-
tion
4.3.1
Apx.
Forward limit M8343 M8353 M8363 M8373
-
-
-
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
Subsec-
tion
4.3.1
Reverse limit M8344 M8354 M8364 M8374
Immediate
Subsec-
tion
4.3.2
stop of pulse
M8349 M8359 M8369 M8379
*9
output
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. 32 bits are used for the maximum speed setting device and the zero return speed setting device.
*4. Set this item using the PC parameter settings (positioning) of GX Developer (Ver.8.23Z or later) with
an FX3U/FX3UC PLC Ver.2.20 or later or FX3G PLC. The settings data set by the parameter setting will
be stored in the corresponding device.
*5. To accelerate or decelerate the operation using the variable speed pulse output (PLSV) instruction
with an FX3U/FX3UC PLC Ver.2.20 or later or an FX3G PLC, it is necessary to set this item.
If the operation is not accelerated or decelerated, or if an FX3UC PLC below Ver.2.20 is used, the
PLSV instruction will not use this item even if it is set.
*6. The ZRN instruction will not use any zero return direction setting devices. Using the program, adjust
the rotation direction output to the zero return direction.
*7. This item can be set using an FX3U/FX3UC PLC Ver.2.20 or later or an FX3G PLC.
*8. This item can be set using an FX3U/FX3UC PLC Ver.1.30 or later.
The user interrupt input command, however, can only be set using an FX3U/FX3UC PLC Ver.2.20 or
later.
*9. Use this function only if immediate stop is absolutely needed to avoid danger.
*10. Only available for FX3U and FX3UC PLCs.
B - 59
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.5 Setting of Various Items on PLC Side
Example program:
In the following program, the zero return instruction with DOG search function (DSZR), variable speed pulse
output (PLSV) instruction, and interrupt positioning (DVIT) instruction are used for the pulse output
destination (Y000) under the conditions shown in the following table.
1) Set conditions
Related Setting value
device or condition
Setting item
Items related to speed
Description of setting
D8344,
Maximum speed
30000Hz
D8343
(32-bit)
K30000
Bias speed
10Hz
D8342
D8348
D8349
K10
K200
K200
Acceleration time
Deceleration time
200ms
200ms
D8347,
D8346
(32-bit)
Zero return speed
Creep speed
5000Hz
500Hz
K5000
K500
D8345
Items needed for DSZR instruction (zero return instruction with DOG search function) and ZRN instruction (zero
return instruction)
Zero return direction
CLEAR signal output
Reverse rotation direction
M8342
M8341
M8464
D8464
OFF
ON
Output to Y010
ON
*6
CLEAR signal device change
Logic of near-point signal
Logic of zero-phase signal
H0010
Sets the positive logic (turning on the input will
turn on the near-point signal).
M8345
M8346
OFF
OFF
Sets the positive logic (turning on the input will
turn on the zero-phase signal).
Items needed for variable speed pulse output (PLSV) instruction
If X012 is turned on, the variable speed pulse
output (PLSV) instruction will be activated to M8338
accelerate or decelerate the operation.
ON:
If X012 = ON
Acceleration/deceleration Operation
*1
Items needed for interrupt positioning (DVIT) instruction
Sets X007 for interrupt inputs.
M8336
D8336
ON
Interrupt positioning (DVIT) instruction will not
be used for the pulse output destinations
Y001, Y002, and Y003.
Interrupt input signal device change
HFFF7
User interrupt input command
Logic of interrupt input signal
Do not use.
M8460
M8347
-
Sets the negative logic (turning off the input
will turn on the interruption signal).
ON
Forward limit, reverse limit, and immediate stop of pulse output
If X010 is turned off (if the NC contact is
turned on), the limit switch will be activated.
ON:
If X010 = OFF
Forward limit
M8343
If X011 is turned off (if the NC contact is
turned on), the limit switch will be activated.
ON:
If X011 = OFF
Reverse limit
M8344
M8349
Immediate stop of pulse output
Do not use.
-
*1. Only available for FX3U and FX3UC PLCs.
B - 60
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.5 Setting of Various Items on PLC Side
A
B
2) Set program
M8002
Maximum speed (for Y000):
30000 Hz (D8344, D8343)
FNC 12
DMOV
K30000 D8343
→
Initial pulse
Bias speed (for Y000):
10 Hz D8342
FNC 12
MOV
K10
K200
K200
D8342
D8348
D8349
→
Acceleration time (for Y000):
200 ms D8348
FNC 12
MOV
→
Deceleration time (for Y000):
200 ms D8349
FNC 12
MOV
→
Zero return speed (for Y000, DSZR instruction)
:5000 Hz (D8347, D8346)
FNC 12
DMOV
Apx.
K5000 D8346
→
Creep speed (for Y000, DSZR instruction)
:500 Hz, D8345
FNC 12
MOV
K500
D8345
M8342
M8000
Zero return direction (for Y000, DSZR instruction)
:Reverse rotation direction
RUN monitor
M8000
CLEAR signal output (for Y000)
:Y010
FNC 12
MOVP
H0010 D8464
M8464
RUN
monitor
M8341
M8000
Logic of near-point signal (for Y000)
:Positive logic
M8345
RUN
monitor
Logic for zero-phase signal
(for Y000, DSZR instruction)
:Positive logic
M8346
X012
Acceleration/deceleration operation
(PLSV instruction)
:Enabled if X012 = ON
M8338
M8000
FNC 12
MOVP
HFFF7 D8336
M8336
Interruption input signal device
(for Y000, DVIT instruction)
:X007 (Y001 to Y003 will not be used.)
RUN
monitor
M8000
Logic of interruption input
signal:Negative logic
M8347
RUN monitor
X010
M8343
M8344
Forward rotation limit (for Y000)
Reverse rotation limit (for Y000)
X011
B - 61
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.5 Setting of Various Items on PLC Side
4.5.2 Setting of High-Speed Output Special Adapter
If a high-speed output special adapter (FX3U-2HSY-ADP) is used, the pulse output method can be selected
from "pulse train + direction" method and "forward/reverse rotation pulse train" method.
1. Setting of pulse output method
Using the pulse output method setting switch on the high-speed output special adapter (FX3U-2HSY-ADP),
set the pulse output method as shown in the following table.
The pulse output method setting should conform to the command pulse input method setting for the servo
amplifier (drive unit).
→ For details on the servo amplifier (drive unit), refer to the manual of the product used in your
system.
Position of
pulse output
method setting
switch
Logic of
command
pulse
Pulse output method
Forward rotation
Reverse rotation
OFF*1
Forward rotation
pulse train (FP)
Reverse rotation
pulse train (RP)
H
L
Forward rotation
pulse train (FP)
Negative
logic
•
FP RP side
H
L
Reverse rotation
pulse train (RP)
OFF*1
Forward rotation
Reverse rotation
OFF*1
H
Pulse train
Direction
Pulse train +
direction
Negative
logic
•
L
PLS DIR side
H
L
ON*1
*1. "ON" and "OFF" represent the statuses of the PLC output. "H" and "L" respectively represent the
HIGH status and the LOW status of the waveform.
→ For details on the relation between the PLC output and the waveform, refer to
Subsection 4.6.1.
Caution:
Use the Output Form Setting Switch while the PLC is in STOP or while the power is OFF. Do not operate the
Output Form Setting Switch while a pulse train is being generated.
2. Setting of rotation direction signal for positioning instruction
If a high-speed output special adapter (FX3U-2HSY-ADP) is used, the rotation direction signal will be
assigned to each pulse output destination device as shown in the following table. Set the rotation direction
signal of the positioning instruction as shown in the following table:
Output number
Position of pulse output
method setting switch of high-
speed output special adapter
Name of
positioning
instruction
Signal
1st adapter
2nd adapter
1st axis 2nd axis 3rd axis 4th axis
Pulse output
destination:
Forward rotation
pulse train (FP)
Y000
Y004
Y000
Y004
Y001
Y005
Y001
Y005
Y002
Y006
Y002
Y006
Y003
Y007
Y003
Y007
•
FP RP side
Reverse rotation
pulse train (RP)
Rotation direction
signal
Pulse output
destination:
Pulse train
Direction
•
PLS DIR side
Rotation direction
signal
B - 62
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.5 Setting of Various Items on PLC Side
A
B
3. CLEAR signal and rotation direction signal
If a high-speed output special adapter (FX3U-2HSY-ADP) is used, the same output will be used for both the
CLEAR signal and the rotation direction signal of the DSZR (FNC150) or ZRN (FNC156) instruction. For this
reason, it is necessary to change the CLEAR signal output device in order to output the CLEAR signal.
→ For details on the CLEAR signal device change method, refer to Subsection 4.3.4.
Rotation direction signal
(reverse rotation pulse train / direction)
Pulse output
destination device
CLEAR signal device
initially set
1st adapter
2nd adapter
1st axis
2nd axis
3rd axis
4th axis
Y000
Y001
Y002
Y003
Y004
Y005
Y006
Y007
Y004
-
-
-
-
-
-
Y005
-
Y006
-
-
-
Apx.
-
-
Y007
B - 63
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.6 Setting of Various Items on Servo Amplifier (Drive Unit) Side
4.6
Setting of Various Items on Servo Amplifier (Drive Unit) Side
→ For details on the servo amplifier (drive unit), refer to the manual of the product used in your
system.
4.6.1 Setting the Command Pulse Method
1. Pulse output method on PLC side
1) Main unit (transistor output (sink output))
If the main unit (transistor output (sink output)) is used, the pulse output signals (pulse output destination
and rotation direction) will be as shown in the following figure:
Forward
rotation
Reverse
rotation
Forward
rotation
Reverse
rotation
H
L
Pulse output
destination: Y000
Pulse output
destination: Y002
H
L
ON*1
ON *1
H
L
H
L
Any output: Yꢁꢁꢁ
(Rotation direction
designation)
OFF *1
OFF *1
Any output: Yꢁꢁꢁ
(Rotation direction
designation)
OFF *1
H
L
H
L
Pulse output
destination: Y001
ON*1
Any output: Yꢁꢁꢁ
(Rotation direction
designation)
*1. "ON" and "OFF" represent the statuses of the PLC output. "H" and "L" respectively represent the
HIGH and LOW status of the waveform.
→ For details on the relation between the PLC output and the waveform, refer to the next pages.
2) High-speed output special adapter (Pulse train + Direction Setting)
•
When setting the Output Form Setting Switch of the high speed output special adapter to the "PLS DIR"
position, the pulse output signals (pulse output destination signal and rotation direction signal) will be as
shown in the following figure:
Forward
rotation
Reverse
rotation
Forward
rotation
Reverse
rotation
Pulse output
Pulse output
H
H
L
destination: Y000
destination: Y002
L
H
L
ON*1
OFF *1
OFF *1
ON*1
ON*1
OFF *1
OFF *1
Rotation direction
designation: Y004
Rotation direction
designation: Y006
H
L
Pulse output
destination: Y001
Pulse output
destination: Y003
H
L
H
L
H
L
ON*1
H
L
Rotation direction
designation: Y005
Rotation direction
designation: Y007
*1. "ON" and "OFF" represent the statuses of the PLC output. "H" and "L" respectively represent the
HIGH status and the LOW status of the waveform.
→ For details on the relation between the high-speed output special adapter output and
the waveform, refer to the next pages.
B - 64
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.6 Setting of Various Items on Servo Amplifier (Drive Unit) Side
A
B
3) High-speed output special adapter (Forward/Reverse Pulse Train setting)
When setting the Output Form Setting Switch of the high speed output special adapter to the "FP•RP"
position, the pulse output signals will be as shown in the following figure.
Forward
rotation
Reverse
rotation
Forward
rotation
Reverse
rotation
Pulse output
Pulse output
H
L
H
L
destination: Y000
(Forward rotation
pulse train)
destination: Y002
(Forward rotation
pulse train)
OFF *1
OFF *1
Pulse output
Pulse output
OFF *1
H
L
H
L
destination: Y004
(Reverse rotation
pulse train)
destination: Y006
(Reverse rotation
pulse train)
OFF *1
Apx.
Pulse output
Pulse output
H
L
H
L
destination: Y001
(Forward rotation
pulse train)
destination: Y003
(Forward rotation
pulse train)
OFF *1
OFF *1
Pulse output
Pulse output
destination: Y005
(Reverse rotation
pulse train)
destination: Y007
(Reverse rotation
pulse train)
H
L
H
L
OFF *1
OFF *1
*1. "ON" and "OFF" represent the statuses of the PLC output. "H" and "L" respectively represent the
HIGH status and the LOW status of the waveform.
→ For details on the relation between high-speed output special adapter output and the waveform,
refer to the next pages.
B - 65
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.6 Setting of Various Items on Servo Amplifier (Drive Unit) Side
Reference: Image of PLC output and waveform (for MELSERVO-J3 Series servo amplifier)
1) Base unit (transistor output (sink output))
a) Connection of PLC to servo amplifier
When a FX3U Series PLC (sink output) is used, it is connected as shown below.
MR-J3
ꢁA servo
amplifier
OPC 12
FX3U-32MT/ES
(Transistor output
(sink output))
24V DC
DOCOM
46
COM1
Pulse train
Direction
Y000
PP 10
NP 35
COM2
Y004
Plate
SD
b) Image of PLC output and output waveform
Forward rotation
Pulse train signal
Reverse rotation
(Y000)
ON
Image of output
ON/OFF operation
OFF
High
Low
Output waveform
Direction output
(Y004)
Image of output
ON/OFF operation
ON
OFF
High
Low
Output waveform
2) High-speed output special adapter (set to "pulse train + direction")
a) Connection of PLC to servo amplifier
MR-J3
ꢁ
A servo
FX3U-2HSY-ADP
amplifier
Pulse train
Direction
Y0/2+
Y0/2-
Y4/6+
Y4/6-
SGA
PP 10
Equivalent
to AM26C31
PG 11
NP 35
NG 36
SGA
Plate
SD
b) Image of PLC output and output waveform
The output waveform shown below is based on the SGA terminal of the high-speed output special
adapter. If the SGB side of the high-speed output special adapter is used, the output waveform will be
that of the SGB terminal.
Forward rotation
Reverse rotation
Pulse train signal
(Y000)
ON
OFF
High
Low
High
Low
Image of output
ON/OFF operation
+
Output
waveform
-
Direction output
(Y004)
Image of output
ON/OFF operation
ON
OFF
High
Low
High
Low
+
Output
waveform
-
B - 66
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.6 Setting of Various Items on Servo Amplifier (Drive Unit) Side
A
B
3) High-speed output special adapter (set to "forward/reverse rotation pulse train")
a) Connection of PLC to servo amplifier
MR-J3
ꢁA servo
FX3U-2HSY-ADP
amplifier
Forward rotation
pulse train
Y0/2+
Y0/2-
Y4/6+
Y4/6-
SGA
PP 10
Equivalent
to AM26C31
PG 11
NP 35
NG 36
Reverse rotation
pulse train
SGA
Plate
SD
b) Image of PLC output and output waveform
Apx.
The output waveform shown below is based on the SGA terminal of the high-speed output special
adapter. If the SGB side of the high-speed output special adapter is used, the output waveform will be
that of the SGB terminal.
Forward rotation
Reverse rotation
Forward rotation pulse
train(Y000)
ON
OFF
High
Low
High
Low
Image of output
ON/OFF operation
+
Output
waveform
-
Reverse rotation pulse
train(Y004)
ON
Image of output
OFF
High
Low
High
Low
ON/OFF operation
+
Output
waveform
-
2. Setting of command pulse input method for servo amplifier (drive unit)
Set the following servo amplifier (drive unit) parameter so that the pulse train input method of the servo
amplifier (drive unit) matches the pulse output method of the PLC as shown in the following tables.
Pulse output method of high-speed output
Pulse output method of main unit
special adapter
Servo amplifier
(drive unit)
Transistor output (sink output)
Pulse train + direction
Differential line driver
Pulse train + Forward rotation pulse train,
direction
reverse rotation pulse train
Command pulse input
method
"Pulse train +
sign"
Forward rotation pulse train,
Reverse rotation pulse train
"Pulse train + sign"
"Negative logic"
Logic of command pulse
"Negative logic"
"Negative logic"
Parameter setting for each series of MELSERVO servo amplifier:
Set value
forward/reverse rotation pulse
train
Series
Parameter No.
Pulse train + direction
Negative logic
Negative logic
MR-J3
13
21
7
0011
0011
011
0010
0010
010
MR-J2,MR-J2S
MR-C
*1
*1
MR-H
21
7
011ꢁ
010ꢁ
*1
*1
MR-J
ꢁꢁꢁ1
ꢁꢁꢁ0
*1. ꢁ is for settings other than the command pulse output form.
→ For details, refer to the Servo amplifier manual.
B - 67
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.6 Setting of Various Items on Servo Amplifier (Drive Unit) Side
4.6.2 Setting of Electronic Gear (For MELSERVO Series)
Use the electronic gear of the servo motor to set the transfer distance per pulse.
For details on the electronic gear setting, refer to the manual of the servo motor or servo amplifier, and set an
optimum value depending on the application.
Setting example 1:
To set the transfer distance per pulse to 10 µm (if the machine uses a ball screw):
Machine specifications
n
Servo amplifier
MR-C Series
3000r/min
n=NL/NM=1/2
NL
Rated rotational speed of servo motor
Lead of ball screw (Pb)
10mm (0.4")/rev
1/2
NM
Pb=10[mm](0.4")
Reduction ratio (mechanical gear) (n)
Resolution of servo motor (Pt)
4000PLS/REV
Servo motor
Pt = 4000 (PLS/REV)
CMX
CDV
4000
1/2 10
8
1
Pt
f0
: Command pulse frequency [Hz]
(Open collector system)
= 10× ×
10-3
=
ꢀ
0
×
=
n
×
P
b
×
CMX: Electronic gear
(numerator of command pulse
Set the electronic gear as follows:
CMX = 8, CDV = 1
multiplying factor)
In this case, when the main unit outputs the maximum output
pulse frequency (100 kHz), the servo motor rotational speed
will be as follows:
CDV : Electronic gear
(denominator of command pulse
multiplying factor)
N0 : Servo motor rotational speed [r/min]
ꢀ
0 : Transfer distance per pulse [mm]
CMX
CDV
60
Pt
N0
=
=
×
×
f0
8
60
4000
×
×
100000
1
= 12000r/min > 3000r/min (Rated rotational speed of servo motor)
It is necessary to reduce the pulse frequency on the PLC side in order to reduce the servo motor rotational
speed so that it is less than the rated rotational speed.
Pulse output destination device Maximum speed setting device
Y000
Y001
D8344,D8343
D8354,D8353
D8364,D8363
*1
Y002
Y003
*2
D8374,D8373
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
B - 68
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.6 Setting of Various Items on Servo Amplifier (Drive Unit) Side
A
B
Setting example 2:
To set the transfer distance per pulse to 0.01° (if a turntable is used):
Machine specifications
Servo motor
Pt = 131072 (PLS/REV)
Servo amplifier
MR-J2S Series
Rated rotational speed of servo motor 3000r/min
Turntable
Turntable
360°/REV
8/64
Reduction ratio (mechanical gear) (n)
(Timing belt)
Resolution of servo motor (Pt)
131072PLS/REV
Timing belt: 8/64
Apx.
f0 : Command pulse frequency [Hz]
(open collector system)
CMX: Electronic gear
(numerator of command pulse
multiplying factor)
CDV : Electronic gear
(denominator of command pulse
multiplying factor)
N0 : Servo motor rotational speed [r/min]
CMX
CDV
131072
8/64 360
32768
1125
Pt
360
= 1× ×
10-2
=
ꢀ
0
×
=
n×
×
Set the electronic gear as follows:
CMX = 32768, CDV = 1125
In this case, when the main unit outputs the maximum output
pulse frequency (100 kHz), the servo motor rotational speed will
be as follows:
ꢀ
0
: Transfer distance per pulse [° ]
CMX
CDV
60
Pt
N0
=
×
×
f0
32768
1125
1333.33
60
131072
r/min < 3000r/min (Rated rotational speed)
=
×
×
100000
.
.
It is not necessary to restrict the maximum speed on the PLC side because the servo motor rotational speed
is less than the rated rotational speed.
4.6.3 Setting of "Servo Ready" Signal (MELSERVO MR-C Series)
If the following parameter is set as shown in the following table for the MELSERVO MR-C Series, pin 3 of the
CN1 connector of the servo amplifier will be changed to "servo ready" (RD). Note that the following parameter
should be set for the example programs shown in Chapter 12.
Series
Parameter No. Setting value
21 020
MR-C
B - 69
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.7 Items To Be Observed in Programming
4.7
Items To Be Observed in Programming
This section describes various programming items that will not be affected by any pulse output destination
devices (hardware).
For information on the pulse output destination devices (hardware) that are affected by programming items,
refer to the following sections.
→ To use the transistor output of the main unit, also refer to Section 4.8.
→ To use the high-speed output special adapter, also refer to Section 4.9.
4.7.1 Positioning Instruction Activation Timing
The following positioning instructions can be programmed as many times as needed. However, observe the
items shown in the following table to determine the instruction activation timing.
Instruction to be used
Description
DVIT
DSZR
TBL ABS ZRN PLSV DRVI DRVA
*2
Zero return instruction with
DOG search function
DSZR(FNC150)
3
3
3
3
3 ꢀ
3 ꢀ
3 ꢀ
3
3
3
3
3
3
3
3
3
3
3
3
Interrupt Positioning
(interruption fixed-feed)
*2
3
3
DVIT(FNC151)
Positioning by batch setting
method
TBL(FNC152)
Current ABS value read-out
ABS(FNC155)
ZRN(FNC156)
ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ ꢀ
*1
from servo amplifier
Zero return (without DOG
search function)
3
3
3 ꢀ
3
3
3
3
PLSV(FNC157) Variable speed Pulse Output
DRVI(FNC158) Drive to Increment
DRVA(FNC159) Drive to Absolute
3
3
3
3
3
3
3 ꢀ
3 ꢀ
3 ꢀ
3
3
3
3
3
3
3
3
3
3
3
3
3: If the pulse output destination device is now outputting pulses, the instruction cannot be activated. Refer
to the "Note" below.
ꢀ: For the absolute position detection system, activate the ABS (FNC155) instruction after turning the
power ON for the servo amplifier. After executing this instruction, the current value will be read out from
the servo amplifier*1 only once.
Turning this instruction OFF will turn the servo amplifier OFF*1.
*1. The ABS (FNC155) instruction can be used with the absolute position detection system of the
MELSERVO-J3, -J2(S), and -H Series.
*2. Only available for FX3U and FX3UC PLCs.
Caution:
If the "pulse output monitor" (BUSY/READY) flag is on, and if a positioning instruction (excluding the ABS
instruction) or pulse output instruction (PLSR, PLSY) specifies the same pulse output destination device
as the one being used, the instruction cannot be executed.
Even after turning the instruction activation contact OFF, if the "pulse output monitor" (BUSY/READY)
flag is still on, do not execute a positioning instruction (including the PLSR and PLSY instructions) for an
output with the same output number.
Before activating such an instruction, check that the "pulse output monitor" (BUSY/READY) flag is off,
and then wait until 1 cycle or more of operation has been completed.
→ For examples of programs, refer to Chapter 12.
Pulse output destination device
"Pulse output monitor" flag
Y000
Y001
M8340
M8350
M8360
*1
Y002
*2
M8370
Y003
B - 70
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.7 Items To Be Observed in Programming
A
B
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Y003 can be specified as the pulse output destination only if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
Use with PLSY (FNC57) and PLSR (FNC59) instructions:
Along with the positioning instructions (FNC150 - FNC159), the pulse output instructions (FNC57 and FNC59)
require hardware for outputting pulses.
• Do not use the same output number for both a positioning instruction (FNC150 - FNC159) and a pulse
output instruction (FNC57 or FNC59).
• The use of a positioning instruction together with a PLSY or PLSR instruction will complicate the operation
of the register that controls the number of output pulses (see the following table). For this reason, it is
recommended that a positioning instruction should be used in place of the PLSY or PLSR instruction.
→ For details on the related devices, refer to Section 4.1 to Section 4.4.
Apx.
Current value register
Pulse output
destination device
For FNC150 - FNC159 instructions
For FNC57 and FNC59 instructions
Y000
Y001
D8341,D8340
D8351,D8350
D8361,D8360
D8141,D8140
D8143,D8142
-
*1
Y002
*2
D8371,D8370
-
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Y003 can be specified as the pulse output destination only if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
• If it is necessary to use a positioning instruction (FNC150 to FNC159) together with a pulse output
instruction (FNC57 or FNC59), use the following positioning instruction in place of the pulse output
instruction:
- FNC57(PLSY), FNC59(PLSR)→FNC158(DRVI)
B - 71
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.7 Items To Be Observed in Programming
4.7.2 STOP instruction
For the normal stop of an operation (stop after speed reduction), use the "instruction OFF" function or
"forward/reverse limit relay".
If an immediate stop is absolutely needed to avoid danger, use the pulse output stop command relay.
During execution of a positioning instruction, however, if the pulse output stop command relay is turned on,
the pulse outputting operation will be immediately stopped. This means that the motor will be stopped without
deceleration, which may damage the system. For this reason, take caution when using the pulse output stop
command relay.
Pulse output destination
Pulse stop instruction
Operation
device
Y000
M8349
M8359
M8369
During pulse outputting operation, if the pulse output stop
command relay of the corresponding pulse output
destination device is turned on, the pulse outputting
operation will immediately stop.
Y001
*1
Y002
*2
M8379
Y003
*1. Y002 (pulse output destination) cannot be specified when the 14-point or 24-point type FX3G PLC is
connected.
*2. Y003 can be specified as the pulse output destination only if 2 high-speed output special adapters are
connected to the FX3U PLC.
4.7.3 Correction of Backlash
The built-in positioning function cannot correct the mechanical backlash (clearance, play). If it is necessary to
correct the backlash, preliminarily set the number of output pulses considering the backlash that may be
caused while reversing the transfer direction.
Table
Feed screw
Backlash
(clearance, play)
4.7.4 "Instruction execution complete" Flag of Positioning Instruction and Completion of
Positioning
If the Instruction execution complete flag (M8029) or the Instruction execution abnormal end flag (M8329) is
turned on, the execution of the instruction (pulse outputting operation, etc.) is completed. In this case,
however, it is not certain whether the servo motor has stopped. Check the "positioning completion" signal of
the servo amplifier (drive unit) to check whether the servo motor is stopped.
→ For details on "Instruction execution complete" flag and "Instruction execution abnormal end" flag,
refer to Subsection 4.4.2.
B - 72
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.7 Items To Be Observed in Programming
A
B
Programming using "Instruction execution complete" flag and "Instruction execution abnormal end"
flag:
1) If two or more positioning instructions are used in a program, the "Instruction execution complete" flag
(M8029) or "Instruction execution abnormal end" flag (M8329) will be turned on or off after execution of
each instruction. However, if the "Instruction execution complete" flag (M8029) and "Instruction execution
abnormal end" flag are used together for a program, it is difficult to determine which instruction turns them
ON/OFF and the "Instruction execution complete" flag will not be turned on for the intended instruction.
→ To use a positioning instruction at a position other than just below the instruction, refer to the
example shown on the next page.
Good
example:
Apx.
M0
FNC158
K100000 K50000 Y000
Y004
DDRVI
M8029
M0
M0
RST
RST
Completion
of instruction
execution
The M8029 will function
as the "instruction
execution complete"
flag of DRVI instruction.
M8329
Abnormal
completion of
instruction execution
M1
FNC159
K10000 K30000 Y001
Y005
DDRVA
The M8029 will function
as the "instruction
execution complete"
flag of DRVA instruction.
M8029
M1
M1
RST
RST
Completion
of instruction
execution
M8329
Abnormal
completion of
instruction execution
Bad
example:
The M8029 will function
as the "instruction
execution complete" flag
of the lower DPLSV
instruction.
M8029
Program for upper DPLSV
instruction
M0
RST
Completion of
instruction
execution
M8000
FNC 72
DSW
X10
M0
Y10
D0
K1
The M8029 will function
as the "instruction
execution complete" flag
of the lower DSW
instruction.
X000
SET
M0
FNC157
DPLSV
K1000
Y002
Y006
Upper DPLSV instruction
The M8029 will function
as the "instruction
execution complete" flag
of the upper DPLSV
instruction.
M8029
Program for DSW
instruction
FNC 22
MUL
D0
K10
D20
Compl-
etion of instruction execution
M1
FNC157
DPLSV
K1000
Y001
Y005
Lower DPLSV instruction
B - 73
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Built-in Positioning Functions
4.7 Items To Be Observed in Programming
2) To use at a position other than just below the positioning instruction:
If two or more positioning instructions are used in a program, the "Instruction execution complete" flag
(M8029) and "Instruction execution abnormal end" flag (M8329) will be turned on or off after execution of
each instruction.
If it is necessary to use the "Instruction execution complete" flag or "Instruction execution abnormal end"
flag at a point other than just below the instruction, turn on or off another bit device just below the
instruction, and use the contact as the command contact.
M8000
FNC 72
DSW
X10
Y10
D0
K1
Switches "instruction
execution complete"
flag of the DSW
instruction from M8029
to M100.
M8029
M100
Completion
of instruction
execution
M0
FNC158
DDRVI
K10000 K10000 Y000
Y004
M0
Switches the
M8029
"instruction execution
complete" flag of the
DDRVI instruction from
M8029 to M200.
RST
Completion
of instruction
execution
M200
Functions as the instruction
execution complete flag of
the DSW instruction.
M100
FNC 22
MUL
Functions as the instruction
D0
K10
D20
execution complete flag of the
DDRVI instruction.
M200
Y030
B - 74
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.7 Items To Be Observed in Programming
A
B
4.7.5 Operation Error Flag
When there is an error in the applied instruction configuration, target device or target device number range
and an error occurs while operation is executed, the following flag turns ON and the error information is
stored.
1. Operation error
Error detected step number storage device
Error flag
Error code storage device
FX3U/FX3UC PLC
FX3G PLC
M8067
D8067
D8315,D8314,D8069
D8069
• When an operation error has occurred, M8067 is set, D8067 stores the operation error code number in
which the error has occurred.
Apx.
• In the FX3U/FX3UC PLC, D8315 and D8314 (32 bits) store the error occurrence step number.
When the error occurrence step is up to the 32767th step, the error occurrence step can be checked in
D8069 (16 bits).
• In the FX3G PLC, D8069 stores the error occurrence step number.
• If an operation error occurs at another step, the error code and error step number of the instruction will be
sequentially updated. (If the error status is canceled, the error flag will be turned off.)
• If the PLC is stopped and restarted without canceling the error status, the error status will be automatically
canceled, but immediately after that, the error flag will be turned on again.
2. Operation error latch
Error detected step number storage device
Error flag
Error code storage device
FX3U/FX3UC PLC
FX3G PLC
M8068
-
D8313,D8312,D8068
D8068
• When an operation error occurs, M8068 is turned on.
• In the FX3U/FX3UC PLC, D8313 and D8312 (32 bits) store the error occurrence step number.
When the error occurrence step is up to the 32767th step, the error occurrence step can be checked in
D8068 (16 bits).
• In the FX3G PLC, D8068 stores the error occurrence step number.
• If a new error is caused by another instruction, the error data will not be updated, and the operation will be
continued until the "forced reset" command is input or the power is turned off.
4.7.6 Write during RUN
Do not change a program if a positioning instruction (FNC150, FNC151, FNC156 to FNC159) is being
executed (pulses are being output) in the RUN mode. Operations will be performed as shown in the following
table if a program is changed during instruction execution in RUN mode.
If program is changed in circuit block
Instruction
including currently-activated instruction
DSZR(FNC150)
Decelerates and stops pulse output.
*1
DVIT(FNC151)
TBL(FNC152)
ZRN(FNC156)
Program cannot be changed in the RUN mode.
Decelerates and stops pulse output.
Decelerates and stops pulse output.
Immediately stops pulse output.
*2
During operation with acceleration/deceleration
PLSV
(FNC157)
During operation without acceleration/deceleration
DRVI(FNC158)
DRVA(FNC159)
Decelerates and stops pulse output.
*1. Only available for FX3U and FX3UC PLCs.
*2. Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
If an FX3UC PLC is used and its version is below Ver.2.20, operation will be performed without
acceleration/deceleration.
B - 75
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.8 Items To Be Observed When Using the Main Unit (Transistor Output)
4.8
Items To Be Observed When Using the Main Unit (Transistor Output)
1. Pulse output destination devices
Use Y000, Y001, and Y002*1 transistor outputs of the main unit for the pulse output destination devices.
Do not use the transistor output Y003 of the main unit for positioning instructions. If Y003 is used for a positioning
instruction, PLC failure may occur.
2. Pulse output method
Adjust the pulse output method of the transistor output of the main unit to conform with the command pulse
input method of the servo amplifier (drive unit).
If the pulse output method is not properly adjusted, the servo amplifier (drive unit) may not perform the
intended operation.
→ For details on the servo amplifier (drive unit), refer to the manual of the product used in your
system.
→ For details on the pulse output method of the main unit, refer to Subsection 4.6.1.
3. Output pulse frequency (including zero return speed)
If more than 100,000 Hz pulse is output from the transistor output terminal of the main unit to perform the
operation, it may cause PLC failure.
The output pulse frequency and the zero return speed should be equal to or less than the maximum frequency
of the servo amplifier (drive unit).
4. Load current
To use a positioning instruction for the transistor output Y000, Y001, or Y002*1 of the main unit, adjust the
load current of the open collector transistor output to 10 to 100 mA (5 to 24V DC).
Item
Description
5 to 24V DC
Operation voltage range
Operation current range
Output pulse frequency
10 to 100mA
100 kHz or less
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
4.9
Caution for Using the High-Speed Output Special Adapter
(FX3U-2HSY-ADP)
1. Output terminals to be used
If the high-speed output special adapter is connected, output numbers will be assigned in the same way as
the main unit as shown in the following table. Use the output terminals of one side (main unit side or high-
speed output special adapter side), and do not connect lines to the output terminals of the unused side.
The outputs of the high-speed output special adapter and the main will operate as follows.
Assignment of output numbers
Output number
Position of pulse output method
setting switch of high-speed
output special adapter
Name of
positioning
instruction
Signal
1st adapter
2nd adapter
1st axis 2nd axis 3rd axis 4th axis
Forward rotation
pulse train (FP)
Pulse output
destination
Y000
Y004
Y000
Y004
Y001
Y005
Y001
Y005
Y002
Y006
Y002
Y006
Y003
Y007
Y003
Y007
•
FP RP side
Reverse rotation
pulse train (RP)
Rotation
direction signal
Pulse output
destination
Pulse train
Direction
•
PLS DIR side
Rotation
direction signal
B - 76
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.9 Caution for Using the High-Speed Output Special Adapter (FX3U-2HSY-ADP)
A
B
Operation of output
Operation of output
Instruction for outputting pulse train at high speed
Other instructions
If the instruction turns ON, the corresponding output will
be turned on (the corresponding LED will be turned on).
Main unit of relay output type
Can be activated.
FX3U PLC main unit of transistor
output type
*1
Can be activated.
Can be activated.
Can be activated.
High-speed output special adapter Can be activated.
• If an output number of the high-speed output special adapter is used (if an output of the high-speed output
special adapter is connected), do not use (connect) the corresponding output terminal of the main unit.
Apx.
• If an output number of the main unit is used (if an output of the main unit is connected), do not use
(connect) the corresponding output terminal of the high-speed output special adapter.
*1. The output frequency limit of the main unit transistor output is 100 kHz. When operating a load with a pulse
frequency exceeding 100 kHz, PLC failure may occur.
2. Rotation direction signal of positioning instruction
If an FX3U-2HSY-ADP high-speed output special adapter is used, the rotational direction signal will be
assigned to each pulse output destination device as shown in the following table. Do not assign any other
outputs to these devices using positioning instructions, etc.
→ For details, refer to Subsection 4.5.2.
Rotation direction signal
(reverse rotation pulse train / direction)
Pulse output
destination device
Initial setting of
CLEAR signal
1st adapter
2nd adapter
1st axis 2nd axis 3rd axis
4th axis
Y000
Y001
Y002
Y003
Y004
-
-
-
Y004
Y005
Y006
Y007
-
-
-
Y005
-
Y006
-
-
-
-
-
Y007
3. CLEAR signal and rotation direction signal
If an FX3U-2HSY-ADP high-speed output special adapter is used, outputs for the rotation direction signal of
the DSZR (FNC150) or ZRN (FNC156) instruction and the CLEAR signal will overlap as shown in the table
above.
For this reason, in order to output the CLEAR signal, change the CLEAR signal device.
→ For details on the CLEAR signal device change method, refer to Subsection 4.3.4.
4. Pulse output method for high-speed output special adapter
Adjust the pulse output method of the high-speed output special adapter (FX3U-2HSY-ADP) so that the pulse
output method conforms to the command pulse input method of the servo amplifier (drive unit).
If the pulse output method is not properly adjusted, the servo amplifier (drive unit) may not perform the
intended operation.
→ For details on the servo amplifier (drive unit), refer to the manual of the product to be used for your
system.
→ For details on the pulse output method, refer to Subsection 4.6.1 or Subsection 4.5.2.
5. Output pulse frequency (including zero return speed)
Set the output pulse frequency and the zero return speed so that these values can be less than the maximum
frequency value of the servo amplifier (driver unit).
B - 77
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.10 Format and Execution of Applied Instruction
4.10 Format and Execution of Applied Instruction
Instruction and operand:
- Function numbers (FNC00 - FNCꢁꢁꢁ) and symbols (mnemonic codes) are assigned to the applied
instructions of the PLC. For example, a symbol of "SMOV" (shift) is assigned to FNC13.
- Some applied instructions consist of the instruction area only, but many applied instructions consist of
the instruction area and the operand.
Command
input
FNC158
DRVI
S
1•
S
2•
D
1•
D
2•
S
: An operand that will not be affected by the execution of the instruction is referred to as a
source. This symbol represents a source.
If the operand device number can be modified by an index register, "•" will be added, and
the S will be modified to
S
. If there are two or more sources, the modified sources will
become , and so on.
S
1
,
S
2
D
: An operand that will be affected by the execution of the instruction is referred to as a
destination. This symbol represents a destination.
If the device numbers can be indexed by index registers, and if there are two or more
destinations, the modified destinations will become
D1
,
D2
, and so on.
m, n
: The operands not corresponding to source and destination are indicated as "m" and "n".
If the device number can be indexed by index registers, and if there are two or more
operands, the modified operands will become m1, m2, n1, n2, and so on.
•
•
•
•
- Regarding program steps, the instruction area for each applied instruction is 1 step. The operand of
each applied instruction, however, has 2 or 4 steps depending on the number of bits (16 or 32 bits).
Devices for operands:
- Bit devices X, Y, M, and S can be used for the operands, depending on the function.
- Combination of these bit devices, such as KnX, KnY, KnM, and KnS, can be used for numeric data.
→ Refer to the programming manual.
- Current value registers, such as data registers D, timers T, and counters C, can be used.
- A data register D consists of 16 bit. Two consecutive data registers (2 points) are used for 32-bit data.
For example, if data register D0 is specified for the operand of a 32-bit instruction, D1 and D0 will be
used for 32-bit data (D1 for the 16 high-order bits, and D0 for the 16 low-order bits).
If current value registers T and C are used as general data registers, they will behave the same way as
data registers.
Each 32-bit counter (C200 to C255), however, can use 32-bit data without combining two counters.
These counters, however, cannot be specified as the operands of 16-bit instructions.
B - 78
4 Before Programming
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
4.10 Format and Execution of Applied Instruction
A
B
Format and execution of instruction:
Depending on the sizes of the numeric values to be processed, applied instructions can be classified into two
types: 16-bit instructions and 32-bit instructions. In addition, depending on the execution type, these
instructions can also be classified into two types: continuous execution type and pulse execution type.
Depending on the applied instruction, the instruction may or may not have all the combinations.
1. 16-bit instructions and 32-bit instructions
- Depending on the bit length of the numeric data to be processed, applied instructions can be classified
into two types: 16-bit type and 32-bit type.
Command 1
FNC 12
D10
D20
D12
D22
Move D10 to D12.
MOV
Apx.
Command 2
This instruction transfers data from D21 and D20 to D23
and D22.
FNC 12
DMOV
- For the 32-bit instruction, the instruction name will be DMOV ("D" will be added to "MOV").
- Even numbered devices or odd numbered devices can be specified. If a double device is specified, the
specified device will be combined with the device with the next number (for the word devices, such as
devices T, C, and D).
To prevent confusion, it is recommended to use even numbered devices to specify the low-order bits of
an operand of a 32-bit instruction.
- Each 32-bit counter (C200 to C255) needs only one device to set 32 bits. For this reason, the operand
of a 16-bit instruction cannot specify any of the 32-bit counters.
2. Pulse execution type instructions and continuous execution type instructions
Pulse execution type instructions:
The program shown in the right figure shows that when X000 is
turned on, the instruction will be executed only once. If X000 is
off, the instruction will not be executed. If it is not necessary to
execute the instruction frequently, the pulse execution type
instruction is recommended. Note that "P" means that the
instruction of pulse execution type. This means that DMOVP is a
pulse execution type instruction.
X000
FNC 12
MOVP
D10
D12
Continuous execution type instructions:
X001
The program shown in the right figure shows that if X001 is on,
the continuous execution type MOV instruction will be executed
at the start of each operation cycle.
FNC 12
MOV
D10
D12
Note that if FNC24 (INC) or FNC25 (DEC) is used as a continuous execution type instruction, the
destination will be changed at the start of each operation cycle.
To indicate continuous execution type instructions, the symbol "
" will be added to the title of each
instruction as shown in the following figure. Use these instructions carefully.
Number
FNC
Instruction name
D
P
Note that if the activation input X000 or X001 is off, instructions will not be executed. Also note that if the
later symbol is not added to the title of an instruction, the destination of the instruction will not be changed.
B - 79
5 Operation Test
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
5. Operation Test
This chapter describes the operation test of positioning instructions. During forward rotation (JOG+)
operation and reverse rotation (JOG-) operation, the test checks whether positioning instructions are properly
activated.
DESIGN PRECAUTIONS
•
Make sure to have the following safety circuits outside of the PLC to ensure safe system operation even during
external power supply problems or PLC failure.
Otherwise, malfunctions may cause serious accidents.
1) Most importantly, have the following: an emergency stop circuit, a protection circuit, an interlock circuit for
opposite movements (such as normal vs. reverse rotation), and an interlock circuit (to prevent damage to the
equipment at the upper and lower positioning limits).
2) Note that when the PLC CPU detects an error, such as a watchdog timer error, during self-diagnosis, all
outputs are turned off. Also, when an error that cannot be detected by the PLC CPU occurs in an input/output
control block, output control may be disabled.
External circuits and mechanisms should be designed to ensure safe machinery operation in such a case.
3) Note that when an error occurs in a relay, triac or transistor output device, the output could be held either on or
off.
For output signals that may lead to serious accidents, external circuits and mechanisms should be designed to
ensure safe machinery operation in such a case.
DESIGN PRECAUTIONS
•
•
Do not bundle the control line together with or lay it close to the main circuit or power line. As a guideline, lay the
control line at least 100mm (3.94") or more away from the main circuit or power line.
Noise may cause malfunctions.
Install module so that excessive force will not be applied to the built-in programming port, power connectors, I/O
connectors, communication connectors, or communication cables.
Failure to do so may result in wire damage/breakage or PLC failure.
WIRING PRECAUTIONS
•
•
Make sure to cut off all phases of the power supply externally before attempting installation or wiring work.
Failure to do so may cause electric shock or damage to the product.
Make sure to attach the terminal cover, offered as an accessory, before turning on the power or initiating operation
after installation or wiring work.
Failure to do so may cause electric shock.
WIRING PRECAUTIONS
•
Connect the AC power supply to the dedicated terminals specified in the manual of the PLC main unit.
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the PLC will burn
out.
•
Connect the DC power supply to the dedicated terminals specified in the manual of the PLC main unit.
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the PLC will burn
out.
•
•
Do not wire vacant terminals externally.
Doing so may damage the product.
Perform class D grounding (grounding resistance: 100Ω or less) to the grounding terminal on the FX3U/FX3G PLC
2
main unit with a wire 2 mm or thicker.
Do not use common grounding with heavy electrical systems (refer to the manual of the PLC main unit).
Perform class D grounding (grounding resistance: 100Ω or less) to the grounding terminal on the main unit.
Do not use common grounding with heavy electrical systems.
When drilling screw holes or wiring, make sure cutting or wire debris does not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
•
•
B - 80
5 Operation Test
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
A
B
WIRING PRECAUTIONS
•
•
•
Install module so that excessive force will not be applied to I/O connectors.
Failure to do so may result in wire damage/breakage or PLC failure.
Connect input/output cables securely to their designated connectors.
Loose connections may cause malfunctions.
Make sure to properly wire the FX3U/FX3G Series main unit and FX0N/FX2N Series extension equipment in
accordance with the following precautions.
Failure to do so may cause electric shock, a short-circuit, wire breakage, or damage to the product.
-
-
The disposal size of the cable end should follow the dimensions described in this manual.
•
Tightening torque should be between 0.5 and 0.8 N m.
Apx.
•
•
Make sure to properly wire to the European terminal board in accordance with the following precautions.
Failure to do so may cause electric shock, a short-circuit, wire breakage, or damage to the product.
-
-
-
-
-
-
The disposal size of the cable end should follow the dimensions described in this manual.
•
Tightening torque should be between 0.22 and 0.25 N m.
Twist the end of strand wire and make sure that there are no loose wires.
Do not solder-plate the electric wire ends.
Do not connect more than the specified number of wires or electric wires of unspecified size.
Affix the electric wires so that neither the terminal block nor the connected parts are directly stressed.
Make sure to properly wire to the FX Series terminal blocks in accordance with the following precautions.
Failure to do so may cause electric shock, a short-circuit, wire breakage, or damage to the product.
-
-
The disposal size of the cable end should follow the dimensions described in this manual.
•
Tightening torque should be between 0.5 and 0.8 N m.
STARTUP AND MAINTENANCE
PRECAUTIONS
•
•
•
Do not touch any terminal while the PLC's power is on.
Doing so may cause electric shock or malfunctions.
Before cleaning or retightening terminals, cut off all phases of the power supply externally.
Failure to do so may cause electric shock.
Before modifying or disrupting the program in operation or running the PLC, carefully read through this manual
and the associated manuals and ensure the safety of the operation.
An operation error may damage the machinery or cause accidents.
STARTUP AND MAINTENANCE
PRECAUTIONS
•
Do not disassemble or modify the PLC.
Doing so may cause fire, equipment failures, or malfunctions.
For repair, contact your local Mitsubishi Electric distributor.
•
•
Turn off the power to the PLC before connecting or disconnecting any extension cable.
Failure to do so may cause equipment failures or malfunctions.
Turn off the power to the PLC before attaching or detaching the following devices.
Failure to do so may cause equipment failures or malfunctions.
-
-
Peripheral devices, expansion boards, and special adapters
Input/output extension units/blocks and FX Series terminal blocks
B - 81
5 Operation Test
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
5.1 Test Procedure
5.1
Test Procedure
1
Turn off the power to the PLC.
2
Temporarily connect the limit switches (forward rotation limit 1, reverse
rotation limit 1) and the manual switches (forward rotation, reverse rotation).
Connect the limit switches and the manual switches to the following input terminals of the PLC.
Do not connect the servo amplifier (drive unit).
→ For details on connection, refer to Chapter 3 of the Hardware Edition of the PLC.
→ For details on the forward rotation limit and the reverse rotation limit, refer to Subsection 4.3.1.
Signal
Input number
X010
Forward rotation limit 1
Reverse rotation limit 1
Forward rotation (JOG+)
Reverse rotation (JOG-)
NC contact
NC contact
NO contact
NO contact
Limit switch
X011
X012
Manual switch
X013
3
Create the test program.
→ For details on the test program, refer to Section 5.2.
4
5
Turn on the power to the PLC.
Transfer the test program to the main unit.
→ For details, refer to the manual of the programming tool.
6
Check the input indicator lamp (LED lamp).
When the programming controller is stopped, activate the temporarily connected input terminals,
and check the status of each input indicator lamp (LED lamp).
If an FX3UC-32MT-LT(-2) PLC is used, check the input statuses using the display module.
Signal
Input signal
Status of LED indicator lamp
Activation of the forward rotation limit switch 1 will turn off the LED
indicator lamp of X010 (turn off X010).
Forward rotation limit 1
X010
Activation of the reverse rotation limit switch 1 will turn off the LED
indicator lamp of X011 (turn off X011).
Reverse rotation limit 1
Forward rotation (JOG+)
Reverse rotation (JOG-)
X011
X012
X013
Turning on the forward rotation (JOG+) switch will turn on the LED
indicator lamp of X012.
Turning on the reverse rotation (JOG-) switch will turn on the LED
indicator lamp of X013.
7
Switch the PLC into RUN mode.
B - 82
5 Operation Test
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
5.1 Test Procedure
A
B
8
Check the operation in the forward rotation direction.
Check the output indicator lamp (LED lamp) and the current value register to monitor the operation.
The status of the LED indicator lamp and the value indicated in the current value register depend
on the pulse output destination or rotation direction set by the positioning instruction. However, if
the pulse output destination or the rotation direction is changed for the test program, carefully read
the status of the output indicator lamp (LED lamp) and the value indicated in the current value
register to monitor the change.
1. Operation in forward rotation direction
Turn on the forward rotation (JOG+) switch (X012), and verify that the operation is performed in the
forward rotation direction. For this check, set the other inputs as follows:
Apx.
Input signal
X010
Status
ON
X011
ON
X013
OFF
1) LED indicator lamp check
Check the LED indicator lamps of the PLC or the display module to see whether or not the outputs are
turned on. The status of each output should be as shown in the following table:
Pulse output
method
LED lamp of
output
Status of LED lamp (output)
Y000
Y004
Y0/2
Y4/6
Turned on and off at high speed.
Kept ON.
If transistor outputs of the "Pulse train + direc-
main unit are used
tion" method
Turned on and off at high speed.
Kept ON.
"Pulse train + direc-
tion" method
If a high-speed output
special adapter is used
Forward rotation
pulse train (FP)
Reverse rotation
pulse train (RP)
Y0/2
Y4/6
Turned on and off at high speed.
Kept OFF.
2) Current value register (D8341, D8340) check
Monitor the current value register (D8341, D8340) of the FX3U/FX3UC/FX3G PLC using the programming
tool, and confirm that the value is being increased.
→ For details on the current value register, refer to Subsection 4.4.1.
2. Stop of operation
Turn off the forward rotation (JOG+) switch (X012) to stop the operation in the forward rotation direction.
1) LED indicator lamp check
Check the LED indicator lamps of the PLC or the display module to check whether the outputs are turned
on. The status of each output should be as shown in the following table:
Pulse output
method
LED lamp
of output
Status of LED lamp (output)
The LED indicator lamp (turned on and
off at high speed) will be turned off.
Y000
Y004
Y0/2
Y4/6
Y0/2
If transistor outputs of the "Pulse train + direc-
main unit are used
tion" method
Kept ON.
The LED indicator lamp (turned on and
off at high speed) will be turned off.
"Pulse train + direc-
tion" method
Kept ON.
If the high-speed output
special adapter is used
Forward rotation
pulse train (FP)
Reverse rotation
pulse train (RP)
The LED indicator lamp (turned on and
off at high speed) will be turned off.
Y4/6
Kept OFF.
2) Current value register (D8341, D8340) check
Monitor the current value register (D8341, D8340) of the FX3U/FX3UC/FX3G PLC using the programming
tool, and confirm that the value is not being increased.
→ For details on the current value register, refer to Subsection 4.4.1.
B - 83
5 Operation Test
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
5.1 Test Procedure
9
Check the operation of the forward rotation limit switch.
During operation in the forward rotation direction (at step 8), turn off the forward rotation limit switch
1 (X010), and confirm that the operation in the forward rotation direction is stopped.
The LED indicator lamps and the current value register (D8341, D8340) will enter the same
statuses as the stop statuses described in step 8.
In addition, the "Instruction execution abnormal end" flag (M8329) will turn on.
→ For details on the current value register, refer to Subsection 4.4.1.
10
Check the operation in the reverse rotation direction.
Check the output indicator lamp (LED lamp) and the current value register to monitor the operation.
The status of the LED indicator lamp and the value indicated in the current value register depend
on the pulse output destination or rotation direction set by the positioning instruction. However, if
the pulse output destination or the rotation direction is changed for the test program, carefully read
the status of the output indicator lamp (LED lamp) and the value indicated in the current value
register to monitor the change.
1. Operation in reverse rotation direction
Turn on the reverse rotation (JOG-) switch (X013), and verify that the operation is performed in the
reverse rotation direction. For this check, set the other inputs as follows:
Input signal
X010
Status
ON
X011
ON
X012
OFF
1) LED indicator lamp check
Check the LED indicator lamps of the PLC or the display module to check whether the outputs are turned
on. The status of each output should be as shown in the following table:
Pulse output
method
LED lamp
of output
Status of LED lamp (output)
Y000
Y004
Y0/2
Y4/6
Y0/2
Turned on and off at high speed.
Kept OFF.
If transistor outputs of the "Pulse train + direc-
main unit are used
tion" method
Turned on and off at high speed.
Kept OFF.
"Pulse train + direc-
tion" method
If high-speed output
special adapter is used
Forward rotation
pulse train (FP)
Reverse rotation
pulse train (RP)
Kept OFF.
Y4/6
Turned on and off at high speed.
2) Current value register (D8341, D8340) check
Monitor the current value register (D8341, D8340) of the FX3U/FX3UC/FX3G PLC using the programming
tool, and confirm that the value is being reduced.
→ For details on the current value register, refer to Subsection 4.4.1.
B - 84
5 Operation Test
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
5.1 Test Procedure
A
B
2. Stop of operation
Turn off the reverse rotation (JOG-) switch (X013) to stop the operation in the reverse rotation direction.
1) LED indicator lamp check
Check the LED indicator lamps of the PLC or the display module to check whether or not the outputs are
turned on. The status of each output should be as shown in the following table:
Pulse output
method
LED lamp
of output
Status of LED lamp (output)
The LED indicator lamp (turned on and
off at high speed) will be turned off.
Y000
Y004
Y0/2
If transistor outputs of main "Pulse train + direc-
unit are used
tion" method
Kept OFF.
Apx.
The LED indicator lamp (turned on and
off at high speed) will be turned off.
"Pulse train + direc-
tion" method
Y4/6
Y0/2
Kept OFF.
Kept OFF.
If high-speed output
special adapter is used
Forward rotation
pulse train (FP)
Reverse rotation
pulse train (RP)
The LED indicator lamp (turned on and
off at high speed) will be turned off.
Y4/6
2) Current value register (D8341, D8340) check
Monitor the current value register (D8341, D8340) of the FX3U/FX3UC/FX3G PLC using the programming
tool, and confirm that the value is not being decreased.
→ For details on the current value register, refer to Subsection 4.4.1.
11
Check the operation of the reverse rotation limit switch.
During operation in the reverse rotation direction (at step 10), turn off the reverse rotation limit
switch 1 (X011), and confirm that the operation in the reverse rotation direction is stopped.
The LED indicator lamps and the current value register (D8341, D8340) will enter the same
statuses as the stop statuses described in step 10.
In addition, the "Instruction execution abnormal end" flag (M8329) will turn on.
→ For details on the current value register, refer to Subsection 4.4.1.
B - 85
5 Operation Test
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
5.2 Creation of Test Program
5.2
Creation of Test Program
1. Input/output assignment
Inputs/outputs are assigned as shown in the following table:
Signal
Input/output number
Forward rotation limit 1
Limit switch
NC contact
NC contact
NO contact
NO contact
X010
X011
X012
X013
Reverse rotation limit 1
Forward rotation (JOG+)
Manual switch
Reverse rotation (JOG-)
"Pulse train" signal or "forward rotation pulse train" signal (output specified for pulse output
destination)
Y000
Y004
"Direction" signal or "reverse rotation pulse train" signal (output specified for rotation
direction signal)
2. Setting of related devices
The following related devices depend on the pulse output destination device that is set for the positioning
instruction. If the pulse output destination device is changed, it is necessary to change the related devices.
→ For setting items of the related devices, refer to Subsection 4.5.1.
Related
device
Setting value or
condition
Setting item
Items related to speed
Maximum speed
Description of setting
D8344,D8343
(32-bit)
100,000Hz
K100000 Initial value
Bias speed
0Hz
D8342
D8348
D8349
-
K0 Initial value
K100 Initial value
K100 Initial value
Acceleration time
Deceleration time
100ms
100ms
Forward/reverse rotation speed 30,000Hz
K30000
-
Forward limit, reverse limit, and immediate stop of pulse output
If X010 is turned off (if the NC contact is
turned on), the limit switch will be
activated.
Forward limit
M8343
M8344
ON: If X010 = OFF
ON: If X011 = OFF
If X011 is turned off (if the NC contact is
turned on), the limit switch will be
activated.
Reverse limit
Status check items
Positioning (Y000)
Use this device to check whether the
positioning instruction is being
activated.
Turns on when the
positioning instruction is
activated.
M8348
Turns on when the limit
switch is activated
during a positioning
operation.
Use this device to check whether or not
the forward/reverse rotation limit switch M8329
turns ON.
"Instruction execution abnormal
end" flag
Stores the current value of the
positioning operation in Y000.
D8341,D8340 Varies when a positioning
(32-bit) instruction tuns ON.
Current value register (Y000)
B - 86
5 Operation Test
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
5.2 Creation of Test Program
A
B
3. Example program
M8002
Maximum speed (for Y000)
100,000Hz [D8344,D8343]
FNC 12
DMOV
K100000 D8343
→
Initial pulse
Bias speed (for Y000)
0Hz D8342
FNC 12
MOV
K0
D8342
D8348
D8349
→
Acceleration time (for Y000)
100ms D8348
FNC 12
MOV
K100
K100
→
Deceleration time (for Y000)
100ms D8349
FNC 12
MOV
→
Apx.
X010
M8343
M8344
Forward limit (for Y000)
Reverse limit (for Y000)
Forward rotation limit 1
X011
Reverse rotation limit 1
Performs jogging operation
in the forward rotation direction
using the drive to Increment
instruction.
X012
M8348
M101
FNC158
DDRVI
K999999 K30000 Y000
Y004
M101
JOG+ Positioning JOG(+)
(Y000) operation
completed
X012
Completes the JOG+ operation.
M100
JOG+
M8329
JOG(+)
operation
being
Instruction execution
abnormal completion
performed
JOG+ operation is being performed.
M100
Performs jogging operation in the
reverse rotation direction using the
drive to Increment instruction.
X013
M8348 M103
FNC158
DDRVI
K-999999 K30000 Y000
Y004
M103
JOG- Positioning JOG(-)
(Y000) operation
completed
X013
Completes the JOG- operation.
M102
JOG-
M8329
JOG(-)
operation
being
Instruction execution
abnormal completion
performed
JOG- operation is being performed.
M102
END
B - 87
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.1 Types of Mechanical Zero Return Instructions
6. Mechanical Zero Return (DSZR/ZRN Instruction)
6.1
Types of Mechanical Zero Return Instructions
If forward rotation pulses or reverse rotation pulses are being output, the positioning instruction of the PLC will
increase or decrease the current value of the current value register.
When turning off the power of the PLC, however, the current value stored in the current value register will be
erased. For this reason, after turning on the power again, be sure to adjust the current value of the current
value register to the current position of the machine.
The built-in positioning function uses the DSZR/ZRN instruction (zero return instruction) to adjust the value of
the current value register to the current mechanical position.
Compared with the ZRN instruction, the DSZR instruction has additional functionality.
DSZR instruction
ZRN instruction
DOG search function
-
3
3
3
3
DOG signal logical NOT
-
-
-
Zero return using zero-phase signal
Zero point signal logic reverse
Absolute position detection system:
If the MR-H, MR-J2, MR-J2S, or MR-J3 servo amplifier (with absolute position detection function)
manufactured by Mitsubishi is used, the current position value will be retained even after power-off.
To use the absolute position detection system, zero return is required to be performed only once. The PLC
can then read the current position value of the servo motor with the FNC155 (DABS) instruction. With this
method, it is not necessary to perform zero return every time after power-on.
B - 88
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.2 DOG Search Zero Return (DSZR Instruction)
A
B
6.2
DOG Search Zero Return (DSZR Instruction)
Use this instruction to change the CLEAR signal output destination with an FX3U/FX3UC PLC Ver.2.20 or later
or an FX3G PLC.
6.2.1 Instruction Format
1. Instruction format
16-bit
32-bit
instruction
Instruction
symbol
Instruction
symbol
FNC 150
DSZR
Execution condition
Execution condition
instruction
Continuous
execution
type
DSZR
-
-
-
9 steps
ZERO RETURN
WITH DOG
SEARCH
Apx.
Command
input
FNC 150
DSZR
S
1•
S
2•
D
1•
D
2•
2. Data setting
Operand type
Description
Data type
Specifies the near-point signal (DOG) input device number.
Specifies the zero-phase signal input number.
S
1
S2
Bit
Specifies the pulse output number.
D1
Specifies the rotation direction signal output destination number.
D2
3. Devices
Bit device
Word device
Others
Real Char-
num- acter Pointer
ber string
Operand
type
Con-
stant
Spe-
cial unit
System user
Digit designation
System user
Index
X Y M T C S Dꢁ.b KnX KnY KnM KnS
T
C
D
R
Uꢁ\Gꢁ V Z Modify K H
E
"ꢁ"
P
3
3 3
3 ꢁ1
3
S1
ꢁ
2
3
3
3
S
2
ꢁ
3
D1
ꢁ
3
4
3 ꢁ1
D2
ꢁ1 : Dꢁ.b is available only in FX3U and FX3UC PLCs. However, index modifiers (V and Z) are not available.
ꢁ2 : Specify a device in the range of X000 to X007.
ꢁ3 : Specify Y000, Y001, or Y002*1 transistor output from the main unit, or specify Y000, Y001, Y002*3, or
Y003*3 from a high-speed output special adapter*2.
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. High-speed input/output special adapters can be connected only to the FX3U PLC.
*3. To use Y002 and Y003 of a high-speed output special adapter, connect a second high-speed output
special adapter.
Note:
• To use an FX3U Series main unit of relay output type, be sure to connect a high-speed output special
adapter. Differential line drive type outputs will be used for the outputs of the high-speed output special
adapter.
B - 89
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.2 DOG Search Zero Return (DSZR Instruction)
ꢁ4 : When a high-speed output special adapter is used as a destination for pulse output on a FX3U PLC,
use the output shown in the following table for rotation direction signals.
When a built-in transistor output is used as a destination for pulse output on a FX3U/FX3UC/FX3G PLC,
use transistor output for signals rotation direction.
→ For the outputs applicable with a High-speed output special adapter, refer to Section 4.9.
High-speed output special
adapter connection position
Pulse output
Rotation direction output
= Y000
= Y001
= Y002
= Y003
D
2
D
1
= Y004
= Y005
= Y006
= Y007
1st adapter
D2
D1
D2
D1
2nd adapter
D2
D1
6.2.2 List of Related devices
1. Special auxiliary relays
The following table shows the related special auxiliary relays. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Function
Attribute
Refer to
*1
*2
Y000
Y001
M8029
M8329
Y002
Y003
Subsection
4.4.2
"Instruction execution complete" flag
Read only
Read only
Read only
Drivable
Drivable
Drivable
Drivable
Drivable
Drivable
Read only
Drivable
Drivable
Subsection
4.4.2
"Instruction execution abnormal end" flag
Subsection
4.4.3
M8340 M8350 M8360 M8370 "Pulse output monitor" (BUSY/READY) flag
Subsection
4.3.4
*3
M8341 M8351 M8361 M8371
M8342 M8352 M8362 M8372
CLEAR signal output function enable
Subsection
4.3.3
*3
Zero return direction specification
Subsection
4.3.1
M8343 M8353 M8363 M8373 Forward limit
M8344 M8354 M8364 M8374 Reverse limit
Subsection
4.3.1
Subsection
4.3.5
*3
M8345 M8355 M8365 M8375
M8346 M8356 M8366 M8376
DOG signal logic reverse
Subsection
4.3.6
*3
Zero point signal logic reverse
Subsection
4.4.4
M8348 M8358 M8368 M8378 Positioning instruction activation
Subsection
4.3.2
*3
M8349 M8359 M8369 M8379
M8464 M8465 M8466 M8467
Pulse output stop command
CLEAR signal device specification function
Subsection
4.3.4
*3, *4
enabled
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. Cleared when PLC switches from RUN to STOP.
*4. Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
B - 90
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.2 DOG Search Zero Return (DSZR Instruction)
A
B
2. Special data registers
The following table shows the related special data registers. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Data
length value
Initial
Function
Refer to
*1
*2
Y000
Low-
Y001
Y002
Y003
Low-
Low-
order
Low-
order
D8340
D8341
D8342
D8343
D8344
D8345
D8346
D8347
D8348
D8349
D8350
D8351
D8352
D8353
D8354
D8355
D8356
D8357
D8358
D8359
D8360
D8361
D8362
D8363
D8364
D8365
D8366
D8367
D8368
D8369
D8370
D8371
D8372
D8373
D8374
D8375
D8376
D8377
D8378
D8379
order
order
Current value
register (PLS)
Subsection
4.4.1
32-bit
0
0
High-
order
High-
order
High-
order
High-
order
Bias speed
(Hz)
Subsection
4.2.6
16-bit
Apx.
Low-
order
Low-
order
Low-
order
Low-
order
Maximum
speed (Hz)
Subsection
4.2.5
32-bit 100,000
High-
order
High-
order
High-
order
High-
order
Creep speed
(Hz)
Subsection
4.2.4
16-bit
1000
Low-
order
Low-
order
Low-
order
Low-
order
Zero return
speed (Hz)
Subsection
4.2.3
32-bit 50,000
High-
order
High-
order
High-
order
High-
order
Acceleration
time (ms)
Subsection
4.2.7
16-bit
16-bit
100
100
Deceleration
time (ms)
Subsection
4.2.8
CLEARsignal
device
specification
Subsection
4.3.4
16-bit
-
D8464
D8465
D8466
D8467
*3
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
B - 91
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.2 DOG Search Zero Return (DSZR Instruction)
6.2.3 Function and Operation
Command
input
FNC 150
DSZR
S
1•
S
2•
D
1•
D
2•
→ For details on the maximum speed, bias speed, acceleration time, and deceleration time, refer to
Subsection 4.2.5 to Subsection 4.2.8.
Deceleration
time
Acceleration
time
Initial value:
100ms
Initial value:
100 ms
Maximum speed
Initial value: 100,000Hz
Zero return speed
Initial value: 50,000Hz
Current value register = "0"
Creep speed
Initial value:
1,000Hz
Bias speed
Initial value: 0Hz
S
1•
DOG
Rear end
Front end
Zero-phase signal
(X000 - X007)
S
2•
1 ms or less
CLEAR signal
20 ms + 1 scan time (ms)
1) For
S1
, specify the near-point signal (DOG) input device number. To specify the logic of this near-
point signal (DOG), turn the "DOG signal logic reverse" relay on or off as shown in the following table.
Pulse output
destination device
"DOG signal logic
reverse" relay
Description
M8345
M8355
M8365
M8375
= Y000
= Y001
= Y002
= Y003
D
1
OFF: Positive logic (Turning on the input will turn on the
near-point signal.)
D1
ON:
Negative logic (Turning off the input will turn on the
near-point signal.)
D1
D1
• When an input (X000 to X017)*1 from the main unit is used for the near-point signal (DOG)
, the rear end of the near-point signal (DOG) will be monitored (detected) at 1-ms intervals
S1
(interruption).
Under the following condition, however, monitoring (detection) of the near-point signal (DOG) rear end
will be affected by the input constant or the scan time of the sequence program:
- An input number of X020 or below (or other device (auxiliary relay, etc.)) is specified.
*1. Specify X000 to X007 for FX3U-16Mꢁ, FX3UC-16Mꢁ.
Specify X000 to X007 for FX3G PLC (main unit).
B - 92
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.2 DOG Search Zero Return (DSZR Instruction)
A
B
2) For
S
2
, specify the zero-phase signal input number in the range of X000 to X007. To specify the logic
of this zero-phase signal, turn the "Zero point signal logic reverse" relay on or off as shown in the
following table.
If the same input is specified for both the near-point signal and the zero-phase signal, the logic of the zero-
phase signal will be specified by the device of the near-point signal (DOG), and not by one of the following
devices. In this case, the operation will be performed at the front and rear ends of the near-point signal
(DOG) without using the zero-phase signal. This is similar to the operation of the ZRN instruction.
Pulse output
destination device
"Zero point signal logic
reverse" flag
Description
M8346
M8356
M8366
M8376
= Y000
= Y001
= Y002
= Y003
D
1
OFF: Positive logic (Turning on the input will turn on the
near-point signal.)
D1
Apx.
ON:
Negative logic (Turning off the input will turn on the
near-point signal.)
D1
D1
3) For
4) For
D
1
, specify a pulse output number in the range of Y000 to Y003.
, specify the rotation direction signal output device number.
D2
When a high-speed output special adapter is used as a destination for pulse output on a FX3U PLC, use
the output shown in the following table for rotation direction signals.
When a built-in transistor output is used as a destination for pulse output on a FX3U/FX3UC/FX3G PLC,
use transistor output for signals rotation direction.
High-speed output special
adapter connection position
Rotation direction
output
Pulse output
= Y000
= Y001
= Y002
= Y003
D
2
D
1
= Y004
= Y005
= Y006
= Y007
1st adapter
2nd adapter
D2
D1
D2
D1
D2
D1
The rotation direction ON/OFF status of the specified device is shown in the following table.
During instruction execution, however, do not use the output
D2
for other purposes.
ON/OFF status of device
Rotation direction (increase/decrease current value)
D
2
specified by
D
1
Forward rotation (Outputting pulses from
current value.)
will increase the
will decrease the
ON
D1
Reverse rotation (Outputting pulses from
current value.)
OFF
5) Zero return direction
To specify the zero return direction, turn "zero return direction specification" relay on or off as shown in
the following table.
Pulse output
destination device
"Zero return direction
specification" relay
Description
M8342
M8352
M8362
M8372
= Y000
= Y001
= Y002
= Y003
D
1
To perform zero return in the
D1
forward rotation direction:
To perform zero return in the
reverse rotation direction:
Turn on the relay.
Turn off the relay.
D1
D1
B - 93
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.2 DOG Search Zero Return (DSZR Instruction)
6) CLEAR signal output
This instruction can output the CLEAR signal after stopping at the origin.
If it is necessary to output the CLEAR signal at the completion of zero return, turn on the "CLEAR signal
output function enable" relay (see the following table).
Use an FX3U/FX3UC PLC Ver.2.20 or later or FX3G PLC to specify the CLEAR signal output device.
a) If it is not necessary to use the CLEAR signal device specification function, or if an FX3UC PLC below
Ver.2.20 is used.
Status of "CLEAR signal
device specification function
Status of "CLEAR
signal output function
enable" relay
Pulse output
destination device
CLEAR signal device
number
*1
enable" relay
M8341=ON
M8351=ON
M8361=ON
M8371=ON
M8464=OFF
M8465=OFF
M8466=OFF
M8467=OFF
Y004
Y005
Y006
Y007
= Y000
= Y001
= Y002
= Y003
D
1
D1
D1
D1
*1.
Use an FX3U/FX3UC PLC Ver.2.20 or later or FX3G PLC to use the "CLEAR signal device specification function
enable" relay.
b) If it is necessary to use the CLEAR signal device specification
function:
Turn on the "CLEAR signal device specification function enable"
relay to specify the CLEAR signal output device (output Y) for the pulse output destination device
using the CLEAR signal device specification register.
→ For an example program, refer to Subsection 4.3.4 or Subsection 4.5.1.
Status of "CLEAR signal
device specification function
Status of "CLEAR
signal output function
enable" relay
Pulse output
destination device
CLEAR signal device
specification register
*1
enable" relay
M8341=ON
M8351=ON
M8361=ON
M8371=ON
M8464=ON
M8465=ON
M8466=ON
M8467=ON
D 8464
D 8465
D 8466
D 8467
= Y000
= Y001
= Y002
= Y003
D
1
D1
D1
D1
7) Zero return speed
Use the devices shown in the following table to set the zero return speed. Be sure to set the zero return
speed so that the relation with the other speeds is "bias speed ≤ zero return speed ≤ maximum speed".
-
If "zero return speed > maximum speed", the operation will be performed at the maximum speed.
Pulse output
destination device
Bias speed
Zero return speed
Maximum speed
Initial value
D8342
D8352
D8362
D8372
D8347,D8346
D8357,D8356
D8367,D8366
D8377,D8376
D8344,D8343
D8354,D8353
D8364,D8363
D8374,D8373
= Y000
= Y001
= Y002
= Y003
D
1
D1
50,000(Hz)
D1
D1
8) Creep speed
Use the devices shown in the following table to set the creep speed. Be sure to set the creep speed so
that the relation with the other speeds is "bias speed ≤ creep speed ≤ maximum speed".
Pulse output
destination device
Bias speed
Creep speed
Maximum speed
Initial value
D8342
D8352
D8362
D8372
D8345
D8355
D8365
D8375
D8344,D8343
D8354,D8353
D8364,D8363
D8374,D8373
= Y000
= Y001
= Y002
= Y003
D
1
D1
1,000(Hz)
D1
D1
B - 94
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.2 DOG Search Zero Return (DSZR Instruction)
A
B
1. Zero return operation
Zero return operation is described below assuming that Y000 is specified as the pulse output destination
device . If Y001, Y002, or Y003 is specified, it is necessary to change the output number of each related
relay (special auxiliary relay, special data register) below.
→ For details on related relays, refer to Section 4.1 to Section 4.4, or Subsection 6.2.2.
D1
1) Specify the zero return direction.
Turn the "zero return direction specification" relay (M8342) on or off to specify the zero return direction.
2) Execute the DSZR instruction to perform zero return.
3) Transfer operation will be performed in the direction specified by the "zero return direction designation"
flag (M8342) at the speed specified by the "zero return speed designation" device (D8347, D8346).
is turned on*1, the speed will be reduced to the creep
Apx.
4) If the near-point signal (DOG) specified by
speed (D8345).
S1
5) After turning the near-point signal (DOG)
S1
OFF*1, if the zero-phase signal specified by
S2
is
turned on*2, the pulse outputting operation will immediately stop.
If the same input is specified for both the near-point signal and the zero-phase signal, turning the near-
point signal (DOG) OFF*1 will immediately stop the pulse outputting operation (just like the ZRN
instruction where the zero-phase signal is not used).
6) If the CLEAR signal output function (M8341) is enabled (set to ON), the CLEAR signal (Y004) will be
turned on within 1 ms after stopping the pulse outputting operation, and will be kept ON for "20 ms + 1
scan time (ms)".
7) The current value register (D8341, D8340) will be reset to "0" (will be cleared).
8) The "Instruction execution complete" flag (M8029) will turn on, and the zero return operation will be
completed.
→ For details on the "Instruction execution complete" flag, refer to Subsection 4.7.4.
Deceleration
time
(D8349)
Acceleration
time
(D8348)
Zero return
direction
M8342=OFF
Maximum speed
(D8344,D8343)
Zero return speed
(D8347,D8346)
Creep speed
(D8345)
Current value register = "0"
(D8341,D8340)
Bias speed
(D8342)
S1•
DOG
Rear end
Front end
Zero-phase signal
S2•
CLEAR signal
(Y004)
1 ms or less
20 ms + 1 scan time (ms)
"Instruction
execution
complete"
flag M8029
ON
When the instruction is turned off, M8029 is turned off.
*1. This step is described assuming that the "DOG signal logic reverse" relay (M8345) is off. If this flag is
on, it is necessary to change the expression "on" to "off", and "off" to "on".
*2. This step is described assuming that the "Zero point signal logic reverse" relay (M8346) is off. If this
flag is on, it is necessary to change the expression "on" to "off", and "off" to "on".
B - 95
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.2 DOG Search Zero Return (DSZR Instruction)
2. DOG search function
If the forward rotation limit and the reverse rotation limit are set, the DOG search function can be used for
zero return. The zero return operation depends on the zero return start position.
Zero return
direction
Rear end
Front end
DOG
Reverse rotation
limit 1
Forward rotation
limit 1
Reverse rotation limit
Forward rotation limit
Operation in
reverse rotation
direction
4)
3)
2)
1)
Origin
Operation in
forward rotation
direction
1) If the start position is before the DOG:
a) When the zero return instruction is executed, zero return will be started.
b) Transfer operation will be started in the zero return direction at the zero return speed.
c) If the front end of the DOG is detected, the speed will be reduced to the creep speed.
d) After detecting the rear end of the DOG, if the first zero-phase signal is detected, the operation will be
stopped.
2) If the start position is in the DOG area:
a) When the zero return instruction is executed, zero return will be started.
b) Transfer operation will be started in the opposite direction of the zero return direction at the zero return
speed.
c) If the front end of the DOG is detected, the speed will decelerate and the operation will stop. (The
workpiece will come out of the DOG area.)
d) Transfer operation will be restarted in the zero return direction at the zero return speed (and the
workpiece will enter the DOG area again).
e) If the front end of the DOG is detected, the speed will be reduced to the creep speed.
f) After detecting the rear end of the DOG, if the first zero-phase signal is detected, the operation will be
stopped.
3) If the start position is in the near-point signal OFF area (after the DOG):
a) When the zero return instruction is executed, zero return will be started.
b) Transfer operation will be started in the zero return direction at the zero return speed.
c) If the reverse rotation limit 1 (reverse rotation limit) is detected, the speed will decelerate, and the
operation will stop.
d) Transfer operation will be started in the opposite direction of the zero return direction at the zero return
speed.
e) If the front end of the DOG is detected, the speed will be reduced and the operation will be stopped.
(The workpiece will detect the DOG and then come out of the DOG area.)
f) Transfer operation will be restarted in the zero return direction at the zero return speed. (The
workpiece will enter the DOG area again.)
g) If the front end of the DOG is detected, the speed will be reduced to the creep speed.
h) After detecting the rear end of the DOG, if the first zero-phase signal is detected, the operation will be
stopped.
B - 96
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.2 DOG Search Zero Return (DSZR Instruction)
A
B
4) If the limit switch in the zero return direction turns ON (if the start position is at forward rotation limit 1 or
reverse rotation limit 1):
a) When the zero return instruction is executed, zero return will be started.
b) Transfer operation will be started in the opposite direction of the zero return direction at the zero return
speed.
c) If the front end of the DOG is detected, the speed will decelerate and the operation will stop. (The
workpiece will detect the DOG and then come out of the DOG area.)
d) Transfer operation will be restarted in the zero return direction at the zero return speed (and the
workpiece will enter the DOG area again).
e) If the front end of the DOG is detected, the speed will be reduced to the creep speed.
f) After detecting the rear end of the DOG, if the first zero-phase signal is detected, the operation will be
stopped.
Apx.
B - 97
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.2 DOG Search Zero Return (DSZR Instruction)
6.2.4 Important Points
→ For important programming points, refer to Section 4.7.
• If an input (X000 to X017)*1 from the main unit is used for the near-point signal (DOG)
, the rear end
S1
of the near-point signal (DOG) will be monitored (detected) at 1ms intervals (interruption).
Under the following condition, however, monitoring (detection) of the near-point signal (DOG) rear end will
be affected by the input time constant or the scan time of the sequence program:
- An input number of X020 or below or other device (auxiliary relay, etc.) is specified.
*1. Specify X000 to X007 for FX3U-16Mꢁ, FX3UC-16Mꢁ.
Specify X000 to X007 for FX3G PLC (main unit).
• Properly set the DOG so that the near-point signal (DOG) can be kept at the ON status until the speed is
reduced to the creep speed.
This instruction will start speed reduction at the front end of the DOG, and will stop the operation at the rear
end of the DOG or at detection of the first zero-phase signal after passing the rear end of the DOG.
The current value register will then be cleared (reset to "0").
If the speed is not reduced to the creep speed before detecting the rear end of the DOG, the operation may
not be stopped at the specified position.
• Use the near-point signal (DOG) between the reverse rotation limit 1 (LSR) and the forward rotation limit 1
(LSF).
The intended operation may not be performed if the relationship among the near-point signal (DOG),
reverse rotation limit 1 (LSR) and forward rotation limit 1 (LSF) is not as shown in the figure below.
Reverse rotation limit 2 Reverse rotation limit 1
Forward rotation limit 1 Forward rotation limit 2
(Servo amplifier side)
(Programmable
controller side)
LSR
(Programmable
controller side)
LSF
(Servo amplifier side)
DOG
Servo motor
Reverse rotation
Forward rotation
• The input device specified for the near-point signal
for the following items:
S1
or the zero-phase signal
S2
cannot be used
- High-speed counter
- Input interruption
- Pulse catch
- SPD instruction
- DVIT instruction*2
- ZRN instruction
*2. Only available for FX3U and FX3UC PLCs.
• Since the zero-phase signal of the servo motor is used, adjust the relation between the rear end of the
DOG and the zero-phase signal as shown in the following figure. If fine adjustment of the origin position is
needed, adjust the position of the near-point signal (DOG).
Rear end
DOG
Zero-phase signal
• The creep speed should be slow enough.
The zero return instruction will not decelerate at the stop point. Therefore, if the creep speed is not slow
enough, the operation may not stop at the specified position due to inertia.
• If an operand is changed during instruction execution, the change will be ignored and the operation will not
be affected. To change the operation, turn off the command contact of the instruction, and then turn it on
again.
• If the instruction activation contact is turned off during the zero return operation, the speed will decelerate
and the operation will stop. In this case, the "Instruction execution complete" flag (M8029) will not be
turned on.
B - 98
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.2 DOG Search Zero Return (DSZR Instruction)
A
B
• If the "pulse output monitor" (BUSY/READY) flag is on, a positioning instruction (including PLSR and
PLSY) that uses the same output cannot be executed.
If the "pulse output monitor" (BUSY/READY) flag is still on after the instruction activation contact is turned
off, do not execute a positioning instruction (including PLSR and PLSY instructions) that uses the same
output number.
• In the following case, the "Instruction execution abnormal end" flag (M8329) will be turned on, and the
execution of the instruction will be completed.
→ For details on the "Instruction execution abnormal end" flag, refer to Subsection 4.7.4.
- If the DOG search function cannot detect the near-point signal (DOG), the speed will decelerate and the
operation will stop.
In this case, "Instruction execution abnormal end" flag (M8329) will be turned on, and the execution of
the instruction will be completed.
Apx.
B - 99
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.3 Zero Return (ZRN Instruction)
6.3
Zero Return (ZRN Instruction)
Use this instruction to change the CLEAR signal output destination with an FX3U/FX3UC PLC Ver.2.20 or later
or an FX3G PLC.
6.3.1 Instruction Format
1. Instruction Format
16-bit
32-bit
Instruction
symbol
Instruction
symbol
FNC 156
ZRN
Execution condition
Execution condition
instruction
instruction
D
DZRN
Continuous
execution
type
Continuous
execution
type
ZRN
-
9 steps
17 steps
ZERO RETURN
-
Command
input
FNC156
ZRN
S
1•
S
2•
S
3•
D•
2. Data setting
Operand type
Description
Data type
*1
Specifies the zero return speed.
S1
BIN16/32-bit
Specifies the creep speed. (Setting range: 10 to 32,767 Hz)
Specifies an input number for the near-point signal(DOG).
Specifies the pulse output number.
S
2
S3
Bit
D
*1. Setting range : 10 to 32,767 Hz for 16-bit operation
For 32-bit operation, however, the setting range should be as shown in the following
table.
Pulse output destination
High-speed output special adapter
FX3G/FX3U/FX3UC PLC Main unit (transistor output)
Setting range
10 to 200,000(Hz)
10 to 100,000(Hz)
FX3U PLC
3. Devices
Bit device
System user
X Y M T C S Dꢁ.b KnX KnY KnM KnS
Word device
Others
Real Char-
num- acter Pointer
ber string
Operand
type
Con-
stant
Special
unit
Digit designation
System user
Index
T
3
3
C
3
3
D
3
3
R
Uꢁ\Gꢁ
V
3
3
Z
3
3
Modify K H
E
"ꢁ"
P
3
3
3
3
3
3
3
3
3 ꢁ3
3
3
3
3 3
3 3
S1
3 ꢁ3
S2
3 3 3
3 ꢁ1
S3
ꢁ
2
3
D
ꢁ1 : Dꢁ.b is available only in FX3U and FX3UC PLCs. However, index modifiers (V and Z) are not available.
ꢁ2 : Specify Y000, Y001, or Y002*1 transistor output from the main unit, or specify Y000, Y001, Y002*3, or
Y003*3 from a high-speed output special adapter*2.
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. High-speed input/output special adapters can be connected only to the FX3U PLC.
*3. To use Y002 and Y003 of a high-speed output special adapter, connect a second high-speed output
special adapter.
ꢁ3 : Only available for FX3U and FX3UC PLCs.
Note:
• To use an FX3U Series main unit of relay output type, be sure to connect a high-speed output special
adapter. Differential line drive type outputs will be used for the outputs of the high-speed output special
adapter.
B - 100
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.3 Zero Return (ZRN Instruction)
A
B
6.3.2 List of Related devices
1. Special auxiliary relays
The following table shows the related special auxiliary relays. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Function
Attribute
Refer to
*1
*2
Y000
Y001
M8029
M8329
Y002
Y003
Subsection
4.4.2
"Instruction execution complete" flag
Read only
Read only
Read only
Drivable
Subsection
4.4.2
"Instruction execution abnormal end" flag
Apx.
Subsection
4.4.3
M8340 M8350 M8360 M8370 "Pulse output monitor" (BUSY/READY) flag
Subsection
4.3.4
*3
M8341 M8351 M8361 M8371
CLEAR signal output function enable
Subsection
4.3.1
M8343 M8353 M8363 M8373 Forward limit
M8344 M8354 M8364 M8374 Reverse limit
Drivable
Subsection
4.3.1
Drivable
Subsection
4.4.4
M8348 M8358 M8368 M8378 Positioning instruction activation
Read only
Drivable
Subsection
4.3.2
*3
M8349 M8359 M8369 M8379
M8464 M8465 M8466 M8467
Pulse output stop command
CLEAR signal device specification function
Subsection
4.3.4
Drivable
*3, *4
enable
*1.
*2.
Y002 is not available in 14-point and 24-point type FX3G PLC.
Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are connected to the FX3U
PLC.
*3.
*4.
Cleared when PLC switches from RUN to STOP.
Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
2. Special data registers
The following table shows the related special data registers. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Data
length value
Initial
Function
Refer to
*1
*2
Y000
Low-
Y001
Y002
Y003
Low-
order
Low-
order
Low-
order
D8340
D8350
D8351
D8360
D8361
D8370
D8371
order
Current value
register (PLS)
Subsection
4.4.1
32-bit
0
0
High-
order
High-
order
High-
order
High-
order
D8341
Bias speed
(Hz)
Subsection
4.2.6
D8342
D8352
D8362
D8372
16-bit
Low-
order
Low-
order
Low-
order
Low-
order
D8343
D8344
D8353
D8354
D8363
D8364
D8373
D8374
Maximum
speed (Hz)
Subsection
4.2.5
32-bit 100,000
High-
order
High-
order
High-
order
High-
order
Acceleration
time (ms)
Subsection
4.2.7
D8348
D8358
D8368
D8378
16-bit
16-bit
100
100
Deceleration
time (ms)
Subsection
4.2.8
D8349
D8464
D8359
D8465
D8369
D8466
D8379
D8467
signal
CLEAR
device
Subsection
4.3.4
16-bit
-
*3
specification
*1.
*2.
Y002 is not available in 14-point and 24-point type FX3G PLC.
Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are connected to the
FX3U PLC.
*3.
Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
B - 101
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.3 Zero Return (ZRN Instruction)
6.3.3 Function and operation
Command
input
FNC156
ZRN
S
1•
S
2•
S
3•
D•
→ For details on the maximum speed, bias speed, acceleration time and deceleration time, refer to
Subsection 4.2.5 to Subsection 4.2.8.
Deceleration
time
Acceleration
time
Maximum speed
Zero return speed
S
1•
Creep speed
S
2•
Bias speed
DOG
S
3•
Rear end
Front end
CLEAR signal
1 ms or less
20 ms + 1 scan time (ms)
"Instruction
execution
complete" flag
M8029
ON
When the instruction is turned off, M8029 is turned off.
1) For
S1
, specify the zero return speed.
If the set zero return speed value is more than the maximum speed value, the operation will be performed
at the maximum speed.
Setting range
16-bit operation
When a high-speed output special
10 to 32,767(Hz)
10 to 200,000(Hz)
adapter is used
32-bit operation
When a transistor output from the
main unit is used
10 to 100,000(Hz)
Note that the zero return speeds shown in the following table will not apply.
Pulse output destination device
Zero return speed
D8347,D8346
D8357,D8356
D8367,D8366
D8377,D8376
= Y000
= Y001
= Y002
= Y003
D
1
D1
D1
D1
2) For
S2
, specify the creep speed.
Setting range: 10 to 32,767 Hz
B - 102
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.3 Zero Return (ZRN Instruction)
A
B
3) For
S
3
, specify the near-point signal (DOG) input device number ( NO contact).
Turning on the near-point signal will reduce the speed to the creep speed. Turning off the near-point
signal will complete the zero return operation.
→ For details, refer to "1. Zero return operation".
• If an input (X000 to X007) of the main unit is specified for the input signal, the PLC interruption function
will be used to stop the operation. (To output the CLEAR signal, turn on the "CLEAR signal output
function enable" relay.)
Under the following condition, however, operation may be affected by the input constant or the scan
time of the sequence program, and the operation, therefore, may not be stopped exactly at the origin.
-An input number of X010 or below (or other device (auxiliary relay, etc.)) is specified.
• If an input relay X010 or higher is specified for the near-point signal, the input filter (10 ms) will be
applied.
Apx.
4) For
D
, specify a pulse output number in the range of Y000 to Y003.
5) Zero return direction
For this instruction, the zero return direction is set to the reverse rotation direction.
(During zero return operation, the value indicated in the current value register will be decreased.)
To perform zero return in the forward rotation direction*1, follow the example program below to control the
direction output.
→ For programming details, refer to Section 4.7.
→ To use the main unit (transistor output), refer to Section 4.8.
→ To use a high-speed output special adapter, refer to Section 4.9.
a) Turn on Yꢁꢁꢁ (rotational direction signal).
b) Refresh Yꢁꢁꢁ output using the REF (FNC50) instruction.
c) Execute the ZRN instruction (zero return instruction).
d) With the execution completion flag (M8029) of the ZRN instruction (zero return instruction), reset
Yꢁꢁꢁ (rotational direction signal).
Example program:
In the program shown below, Y004 is specified as the rotation direction signal output device for Y000.
Command
input
RST
RST
SET
Y000
M10
M11
Y004
K8
M8340
Turns on (sets) Y004 as the
rotational direction signal of Y000
(pulse output destination).
a)
b)
Y000 output
pulse monitor
Refreshes Y000 to Y007.
Executes ZRN instruction.
FNC 50
REFP
c)
d)
FNC156
DZRN
S
1•
S
2•
S
3•
Y000
Y004
M10
Y004
M11
Resets the rotational direction
signal (Y004) using the instruction
execution complete flag.
M8029
M8329
RST
SET
RST
SET
Origin data reading completion flag
Resets the rotational direction signal
(Y004) using the instruction
execution abnormal end flag.
Abnormal end of zero return
*1. The pulses being output will always decrease the current value.
B - 103
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.3 Zero Return (ZRN Instruction)
6) CLEAR signal output
This instruction can output the CLEAR signal after stopping at the origin. If it is necessary to output the
CLEAR signal at the completion of zero return, turn on the "CLEAR signal output function enable" relay
(see the following table). Use an FX3U/FX3UC PLC Ver.2.20 or later or FX3G PLC to specify the CLEAR
signal output device.
a) If it is not necessary to use the CLEAR signal device specification function, or if an FX3UC PLC of
below Ver.2.20 is used:
Status of "CLEAR signal
device specification
Status of "CLEAR
signal output function
enable" relay
Pulse output
destination device
CLEAR signal device
number
*1
function enable" relay
M8341=ON
M8351=ON
M8361=ON
M8371=ON
M8464=OFF
M8465=OFF
M8466=OFF
M8467=OFF
Y004
Y005
Y006
Y007
= Y000
= Y001
= Y002
= Y003
D
1
D1
D1
D1
*1. Use an FX3U/FX3UC PLC Ver.2.20 or later or FX3G PLC to use the "CLEAR signal device specification function
enable" relay.
b) If it is necessary to use the CLEAR signal device specification
function:
Turn on the "CLEAR signal device specification function enable"
relay to specify the CLEAR signal output device (output Y) for the
pulse output destination device using the CLEAR signal device specification register.
→ For the example of a program, refer to Subsection 4.3.4 or Subsection 4.5.1.
Status of "CLEAR
signal output function
enable" relay
Status of "CLEAR signal
device specification
function enable" relay
Pulse output
destination device
CLEAR signal device
specification register
M8341=ON
M8351=ON
M8361=ON
M8371=ON
M8464=ON
M8465=ON
M8466=ON
M8467=ON
D 8464
D 8465
D 8466
D 8467
= Y000
= Y001
= Y002
= Y003
D
1
D1
D1
D1
B - 104
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.3 Zero Return (ZRN Instruction)
A
B
1. Zero return operation
Zero return operation is described below assuming that Y000 is specified as the pulse output destination
device . If Y001, Y002, and Y003 are specified, it is necessary to change the output number of each
related relay (special auxiliary relay, special data register) below.
→ For details on related flags, refer to Section 4.1 to Section 4.4, or Subsection 6.2.2.
D
1) Execute the ZRN instruction to carry out zero return.
2) Transfer operation will be performed at the zero return speed specified by
S1
.
3) If the near-point signal (DOG) specified by
speed specified by
S3
is turned on, the speed will be reduced to the creep
S2
.
4) If the near-point signal (DOG) specified by
immediately stopped.
S3
is turned off, the pulse outputting operation will be
Apx.
5) If the CLEAR signal output function (M8341) is enabled (set to ON), the CLEAR signal (Y004) will be
turned on within 1 ms after stopping the pulse outputting operation, and will be kept ON for "20 ms + 1
scan time (ms)".
6) The current value register (D8341, D8340) will be reset to "0" (will be cleared).
7) "Instruction execution complete" flag will be turned on, and the zero return operation will be completed.
→ For details on "Instruction execution complete" flag, refer to Subsection 4.7.4.
Deceleration
time
(D8349)
Acceleration
time
(D8348)
Maximum speed
(D8344,D8343)
Zero return speed*1
S
1•
Creep speed
S
2•
Bias speed
(D8342)
DOG
S
3•
Rear end
Front end
CLEAR signal
Y004
1 ms or less
20 ms + 1scan time (ms)
"Instruction
execution
complete" flag
M8029
ON
When the instruction is turned off, M8029 is turned off.
*1. Note that the zero return speeds shown in the following table will not apply.
Pulse output destination device
Zero return speed
D8347,D8346
D8357,D8356
D8367,D8366
D8377,D8376
= Y000
= Y001
= Y002
= Y003
D
1
D1
D1
D1
B - 105
6 Mechanical Zero Return (DSZR/ZRN Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
6.3 Zero Return (ZRN Instruction)
6.3.4 Important Points
→ For important programming points, refer to Section 4.7.
• If an input (X000 to X007) of the main unit is specified for the near-point input signal specified by
PLC interruption function will be used to stop the operation.
S3
, the
Under the following condition, however, operation may be affected by the input constant or the scan time of
the sequence program.
- An input number of X010 or below (or other device (auxiliary relay, etc.)) is specified.
If input relay X010 or higher is specified for the near-point signal, the input filter (10 ms) will be applied.
• If an input (X000 to X007) is specified for the near-point signal
following items:
S3
, the input cannot be used for the
- High-speed counter
- Input interruption
- Pulse catch
- SPD instruction
- DSZR instruction
- DVIT instruction*1
• Properly set the DOG so that the near-point signal (DOG) can be kept ON until the speed is reduced to the
creep speed.
This instruction will start speed reduction at the front end of the DOG, and will stop the operation at the rear
end of the DOG. The current value register will then be cleared (reset to "0").
If the speed is not reduced to the creep speed before detecting the rear end of the DOG, the operation may
not be stopped at the specified position.
• The creep speed should be slow enough.
The zero return instruction will not decelerate at the stop point. Therefore, if the creep speed is not slow
enough, the operation may not stop at the specified position due to inertia.
• The DOG search function does not apply for this instruction. Therefore, start the zero return operation on
the front side of the near-point signal. If it is necessary to use the DOG search function, use the DSZR
instruction.
• The zero-phase signal of the servo motor cannot be used. For this reason, if fine adjustment of the origin
position is needed, adjust the position of the near-point signal (DOG).
• If the instruction activation contact is turned off during zero return operation, the speed will decelerate and
the operation will stop. In this case, the "Instruction execution complete" flag (M8029) will not turn on.
• While the "pulse output monitor" (BUSY/READY) flag is on, a positioning instruction (including PLSR and
PLSY) that uses the same output cannot be executed.
If the "pulse output monitor" (BUSY/READY) flag is still on after the instruction activation contact is turned
off, do not execute a positioning instruction (including PLSR and PLSY instructions) that uses the same
output number.
• In the following case, the "Instruction execution abnormal end" flag (M8329) will be turned on, and
execution of the instruction will be completed.
→ For details on the "Instruction execution abnormal end" flag, refer to Subsection 4.7.4.
- If the forward limit relay or the reverse limit relay is turned on, the speed will decelerate and the
operation will stop. In this case, the "Instruction execution abnormal end" flag (M8329) will be turned on
when execution of the instruction is complete.
- If the limit relay (forward limit relay or reverse limit relay) on the opposite side of the operation direction
is turned on, the speed will decelerate and the operation will stop.
In this case, the "Instruction execution abnormal end" flag (M8329) will be turned on when execution of
the instruction is complete.
*1. Only available for FX3U and FX3UC PLCs.
B - 106
7 Absolute Position Detection System (Absolute Current Value Read)-ABS
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
7.1 Instruction Format
A
B
7. Absolute Position Detection System
(Absolute Current Value Read)-ABS Instruction
With the use of the servo absolute position detection system, the built-in positioning function uses the current
ABS value read-out (ABS) instruction to read out the current value (absolute position (ABS) data) from the
MELSERVO-H, -J2(S), or -J3 servo amplifier.
→ For items to be observed in programming, refer to Section 4.7.
→ For the servo amplifier and connection of the MELSERVO Series, refer to the Appendix and the
examples of connection.
Apx.
7.1
Instruction Format
1. Instruction Format
16-bit
instruction
32-bit
Instruction
symbol
FNC 155
ABS
Instruction
symbol
Execution condition
Execution condition
instruction
D
Continuous
execution
type
−
−
DABS
13 steps
ABSOLUTE
−
Command
input
FNC 155
DABS
S
•
D
1•
D2•
2. Data setting
Operand type
Description
Data type
Specifies the first number of the device that inputs the absolute position (ABS) data
S
S
from the servo amplifier. Number of occupied points: 3 (first point for
)
BIN16-bit
BIN32-bit
Specifies the first number of the device that outputs the absolute position (ABS) data
D
1
D
1
control signal to the servo amplifier. Number of occupied points: 3 (first point for
Specifies the absolute position (ABS) data (32-bit value) storage device number.
)
D2
3. Devices
Bit device
Word device
Others
Real Char-
num- acter Pointer
ber string
Operand
type
Con-
stant
Special
unit
System user
Digit designation
System user
Index
X Y M T C S Dꢁ.b KnX KnY KnM KnS
T
C
D
R Uꢁ/Gꢁ
V
Z
Modify K H
E
"ꢁ"
P
3 3 3
3 3
3 ꢁ1
3
3
3
S
3 ꢁ1
D1
3
3
3
3
3
3
3 ꢁ2
3
3
D2
ꢁ1 : Dꢁ.b is available only in FX3U and FX3UC PLCs. However, index modifiers (V and Z) are not available.
ꢁ2 : Only available for to FX3U and FX3UC PLCs.
B - 107
7 Absolute Position Detection System (Absolute Current Value Read)-ABS Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
7.2 List of Related Devices
7.2
List of Related Devices
→ For details on the related devices, refer to Section 4.1 to Section 4.4.
1. Special auxiliary relays
The following table shows the related special auxiliary relays.
Note that Y000, Y001, Y002, and Y003 are devices that determine the pulse output destinations.
→ For details on PLSY (FNC57), PWM (FNC58), and PLSR (FNC59) instructions, refer to the
programming manual.
Device number
Function
Attribute
Refer to
*1
*2
Y000
Y001
M8029
M8329
Y002
Y003
Subsection
4.4.2
"Instruction execution complete" flag
Read only
Read only
Subsection
4.4.2
"Instruction execution abnormal end" flag
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
2. Special data registers
The following table shows the related special data registers. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Data
length value
Initial
Function
Refer to
*1
*2
Y000
Low-
Y001
Y002
Y003
Low-
order
Low-
order
Low-
order
Current
value
register
(PLS)
D8340
D8350
D8351
D8360
D8361
D8370
D8371
order
Subsection
4.4.1
32-bit
0
High-
order
High-
order
High-
order
High-
order
D8341
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
7.3
Function and Operation
Connect an MR-H, MR-J2(S), or MR-J3 servo motor (with absolute position detection function) manufactured
by Mitsubishi to your system, and use this instruction to read out the absolute position (ABS) data. The data
will be converted into a pulse value before being read out.
Command
input
FNC 155
DABS
S
•
D
1•
D2•
1) For
servo amplifier. Number of occupied points: 3 (
2) For , specify the first number of the device that outputs the absolute position (ABS) data control
signal to the servo amplifier. Be sure to use transistor outputs for the PLC outputs.
Number of occupied points: 3 ( +1, +2)
3) For , specify the absolute position (ABS) data (32-bit value) storage device number to store the
S
, specify the first number of the device that inputs the absolute position (ABS) data from the
S
,
S
+1, +2)
S
D1
D1
,
D1
D1
D2
data read out from the servo amplifier. Handle the absolute position (ABS) data as follows:
- To use the built-in pulse output function, be sure to specify the following current value registers for the
read-out ABS data:
*1
*2
Y000
Y001
Y002
D8361,D8360
Y003
D8371, D8370
D8341,D8340
D8351,D8350
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
B - 108
7 Absolute Position Detection System (Absolute Current Value Read)-ABS
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
7.4 Initial Zero Return
A
B
- When using the FX2N-1PG(-E) or FX2N-10PG, read out the ABS data from the data register first, and
then write the read-out ABS data into the current value register of the FX2N-1PG(-E) or FX2N-10PG
using the DTO instruction or directly specify the buffer memory (Uꢁ\Gꢁ) for
to be written to.
D2
1. Detection of absolute position
1) If the DABS (FNC155) instruction turns ON, the
Servo-ON
SON
PLC will activate the servo-ON output and the
ABS transfer mode output.
ABS data transfer
mode
"Send data ready" TLC
signal
"ABS data request"
signal
ABS(bit 1)
ABSM
2) 32+6-bit data communication will be performed
while mutually checking the data sending/
receiving condition using the "send data ready"
signal and the "ABS data request" signal.
Amplifier output
PLC output
ABSR
Apx.
ZSP
DO1
Amplifier output
Amplifier output
3) The 2-bit line (line for ABS bit 0 and bit 1) will be
used for data transmission.
ABS(bit 0)
4) At the completion of ABS data reading, the
"Instruction execution complete" flag (M8029)
will turn on.
Current position data (32 bits)
+ check data (6 bits)
→ For details on the "Instruction execution
complete" flag, refer to
Subsection 4.7.4.
7.4
Initial Zero Return
When your system is established, even if your servo motor is equipped with an absolute position detection
function, it is necessary to perform zero return at least once to send the CLEAR signal to the servo motor.
Use one of the following methods for the initial zero return:
1) Execute DSZR (FNC150) with DOG search zero return instruction or ZRN (FNC156) zero return
instruction using the CLEAR signal function to complete zero return.
2) Carry out zero return for the machine using the position adjustment method in the jogging operation mode
or manual operation mode, and then input the CLEAR signal.
To input the CLEAR signal, use the output of the PLC or the external switch shown in the following figure.
Example for MR-J2-
ꢁA
CR
8
CLEAR
signal
SG 10
B - 109
7 Absolute Position Detection System (Absolute Current Value Read)-ABS Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
7.5 Important Points
7.5
Important Points
• Set the timing sequence for powering on your system so that the power of the PLC is turned on after the
power of the servo amplifier, or that power is turned on at the same time.
• Leave the drive contact of the DABS (FNC155) instruction ON after reading the ABS value. If the
instruction activation contact is turned off at the completion of ABS data reading, the servo-ON (SON)
signal will be turned off, and the operation will not be performed.
• If the instruction activation contact is turned off during data reading, data reading will be stopped.
• This instruction is for 32-bit data only. Be sure to input this instruction as the DABS instruction.
• Observe the following items to use the FX2N-1PG(-E) or FX2N-10PG:
- ABS data will be converted into a pulse value before being read out. For this reason, be sure to specify
"motor system" when setting the parameters (BFM #3) for the FX2N-1PG(-E).
- When writing ABS data to the FX2N-10PG, be sure to use the current value register (BFM #40, BFM
#39) to store the converted pulse data.
• Even if data-communication with the servo amplifier is not performed properly, no error will be detected.
For this reason, it is necessary to monitor the handshaking operation using the time-out error detection
timer.
→ For the example programs, refer to Section 12.5.
• Set the servo motor rotation direction as described below when using the ABS instruction. Note that the
sign (plus or minus) may be different between the current value controlled by the PLC and the current
value existing in the servo amplifier after the current value is read by the ABS instruction if another
direction is set.In the MR-J2-ꢁ-A and MR-H-ꢁ-A, the setting "Forward rotation (CCW) when forward
rotation pulses are input, and reverse rotation (CW) when reverse rotation pulses are input" cannot be
changed.
- When using the positioning function built in the FX3G, FX3U and FX3UC PLC
Set the servo amplifier rotation direction to "Forward rotation (CCW) when forward rotation pulses are
input, and reverse rotation (CW) when reverse rotation pulses are input".
→ For details, refer to the Servo amplifier manual.
- When using the FX2N-1PT or FX2N-10PG with the FX3U or FX3UC PLC
Achieve the following relationship for the rotation direction setting between the FX2N-1PG or FX2N-
10PG and the servo amplifier.
Setting in FX2N-1PG(-E)/FX2N-10PG
Setting in servo amplifier
Servo amplifier rotates forward (CCW) when forward
rotation pulses are input.
Current value is increased by forward
rotation pulses.
Servo amplifier rotates backward (CW) when
reverse rotation pulses are input.
Servo amplifier rotates forward (CW) when forward
rotation pulses are input.
Servo amplifier rotates backward (CCW) when
reverse rotation pulses are input.
Current value is decreased by forward
rotation pulses.
B - 110
8 1-Speed Positioning - DRVI/DRVA Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
8.1 Incremental Method and Absolute Method
A
B
8. 1-Speed Positioning - DRVI/DRVA Instruction
The built-in positioning function uses the drive to increment (DRVI) instruction or the drive to absolute (DRVA)
instruction to perform 1-speed positioning. Note that these two instructions use different target position
setting methods.
Instruction
Target position setting method
Incremental method:
Uses a relative address to specify the target position.
Drive to Increment (DRVI) instruction
Apx.
Absolute method:
Uses an absolute address to specify the target position.
Drive to Absolute (DRVA) instrument
→ For important items common to all of the positioning instructions, refer to Section 4.7.
→ For example programs, refer to Chapter 12.
8.1
Incremental Method and Absolute Method
There are two target position setting methods for positioning operations as described below:
1. Incremental method (relative address setting method)
While regarding the current position as the start point, specify the transfer direction and the transfer distance
(relative address) to determine the target position.
Start point
End point
Transfer
distance:
+100
Transfer distance:
-100
Transfer distance: +100
Transfer distance: +100
Transfer distance: +50
Transfer distance: -150
Transfer distance: -100
0
100
150
300
Point C
Origin
Point A Point B
For example:
-20.7km
+20.7km
Relative address
Current position Target position
To Ueno
Tokyo
Shinyokohama
Odawara Atami
Mishima
Shizuoka
To go from Odawara (current position) to Atami (target position), set the distance (+20.7 km)
from Odawara to Atami.
B - 111
8 1-Speed Positioning - DRVI/DRVA Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
8.1 Incremental Method and Absolute Method
2. Absolute method (absolute address setting method)
Specify the distance (absolute address) from the origin to the target position. In this case, any position can be
the start point (current position).
Start point
Address
100
End point
Address
100
Address
150
Address
300
Address 150
Address 100
Address 150
0
100
150
300
Point C
Origin
Point A Point B
For example:
Current position Target position
Origin
To Ueno
Tokyo
0
Shinyokohama
28.8km
Odawara
83.9km
Atami
Mishima
Shizuoka
→
→
→
→
→
Absolute address
104.6km
120.7km
180.2km
To go from Odawara (current position) to Atami (target position), set the distance (+104.6 km)
from Tokyo (origin) to Atami.
B - 112
8 1-Speed Positioning - DRVI/DRVA Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
8.2 Drive to Increment - DRVI Instruction
A
B
8.2
Drive to Increment - DRVI Instruction
8.2.1 Instruction Format
1. Instruction Format
16-bit
32-bit
Instruction
symbol
Instruction
symbol
FNC 158
DRVI
Execution condition
Execution condition
instruction
instruction
D
DDRVI
Continuous
execution
type
Continuous
execution
type
DRVI
-
9 steps
17 steps
DRIVE TO
INCREMENT
-
Apx.
Command
input
FNC 158
DRVI
S
2•
S
1•
D
1•
D
2•
2. Data setting
Operand type
Description
Data type
*1
Specifies the number of output pulses (relative address).
S1
BIN16/32-bit
*2
Specifies the output pulse frequency.
S2
Specifies the pulse output number.
D
1
Bit
Specifies the rotation direction signal output destination device number.
D2
*1. Setting range : -32,768 to +32,767 (excluding 0) for 16-bit operation
: -999,999 to +999,999 (excluding 0) for 32-bit operation
*2. Setting range : 10 to 32,767 Hz for 16-bit operation
For 32-bit operation, however, the setting range is as shown in the following table.
Pulse output destination
High-speed output special adapter
FX3G/FX3U/FX3UC PLC Main unit (transistor output)
Setting range
10 to 200,000(Hz)
10 to 100,000(Hz)
FX3U PLC
3. Devices
Bit device
System user
Word device
Others
Real Char
num- acter Pointer
ber string
Operand
type
Con-
stant
System
user
Special
unit
Digit designation
Index
X
Y M T C S Dꢁ.b KnX KnY KnM KnS T C D R Uꢁ\Gꢁ V Z Modify
K
H
3
3
E
"ꢁ"
P
3
3
3
3
3
3
3
3
3 3 3 3 ꢁ4 3 3
3
3
3
3
S1
3 3 3 3 ꢁ4 3 3
S2
ꢁ
1
3
3
D
1
ꢁ
2
3
3 ꢁ3
D2
ꢁ1 : Specify Y000, Y001, or Y002*1 transistor output from the main unit, or specify Y000, Y001, Y002*3, or
Y003*3 from a high-speed output special adapter*2.
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. High-speed input/output special adapters can be connected only to the FX3U PLC.
*3. To use Y002 and Y003 with a high-speed output special adapter, connect a second high-speed output
special adapter.
Note:
• To use an FX3U Series main unit of relay output type, be sure to connect a high-speed output special
adapter. Differential line drive type outputs will be used for the outputs of the high-speed output special
adapter.
B - 113
8 1-Speed Positioning - DRVI/DRVA Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
8.2 Drive to Increment - DRVI Instruction
ꢁ2 : When a high-speed output special adapter is used as a destination for pulse output on a FX3U PLC,
use the output shown in the following table for rotation direction signals.
When a built-in transistor output is used as a destination for pulse output on a FX3G/FX3U/FX3UC PLC,
use transistor output for signals rotation direction.
→ For the outputs applicable with a High-speed output special adapter, refer to Section 4.9.
High-speed output special
adapter connection position
Pulse output
Rotation direction output
= Y000
= Y001
= Y002
= Y003
D
2
D
1
= Y004
= Y005
= Y006
= Y007
1st adapter
D2
D1
D2
D1
2nd adapter
D2
D1
ꢁ3 : Dꢁ.b is available only in FX3U and FX3UC PLCs. However, index modifiers (V and Z) are not available.
ꢁ4 : Only available for FX3U and FX3UC PLCs.
8.2.2 List of Related Devices
1. Special auxiliary relays
The following table shows the related special auxiliary relays. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Function
Attribute
Refer to
*1
*2
Y000
Y001
M8029
M8329
Y002
Y003
Subsection
4.4.2
"Instruction execution complete" flag
Read only
Read only
Read only
Drivable
Subsection
4.4.2
"Instruction execution abnormal end" flag
Subsection
4.4.3
M8340 M8350 M8360 M8370 "Pulse output monitor" (BUSY/READY) flag
M8343 M8353 M8363 M8373 Forward limit
Subsection
4.3.1
Subsection
4.3.1
M8344 M8354 M8364 M8374 Reverse limit
Drivable
Subsection
4.4.4
M8348 M8358 M8368 M8378 Positioning instruction activation
Read only
Drivable
Subsection
4.3.2
*3
M8349 M8359 M8369 M8379
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
Pulse output stop command
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. Cleared when the PLC switches from RUN to STOP.
B - 114
8 1-Speed Positioning - DRVI/DRVA Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
8.2 Drive to Increment - DRVI Instruction
A
B
2. Special data registers
The following table shows the related special data registers. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Data
length
Initial
value
Function
Refer to
*1
*2
Y000
Low-
Y001
Y002
Y003
Low-
Low-
order
Low-
order
D8340
D8350
D8351
D8360
D8361
D8370
D8371
order
order
Current value register
(PLS)
Subsection
4.4.1
32-bit
16-bit
0
High-
order
High-
order
High-
order
High-
order
D8341
Subsection
4.2.6
D8342
D8352
D8362
D8372
Bias speed (Hz)
0
Apx.
Low-
order
Low-
order
Low-
order
Low-
order
D8343
D8344
D8353
D8354
D8363
D8364
D8373
D8374
Subsection
4.2.5
Maximum speed (Hz)
Creep speed (Hz)
32-bit 100,000
High-
order
High-
order
High-
order
High-
order
Subsection
4.2.4
D8345
D8355
D8365
D8375
16-bit
1000
Low-
order
Low-
order
Low-
order
Low-
order
D8346
D8347
D8356
D8357
D8366
D8367
D8376
D8377
Subsection
4.2.3
Zero return speed (Hz) 32-bit
50,000
High-
order
High-
order
High-
order
High-
order
Subsection
4.2.7
D8348
D8349
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
D8358
D8368
D8378
Acceleration time (ms)
16-bit
100
100
Subsection
4.2.8
D8359
D8369
D8379
Deceleration time (ms) 16-bit
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
B - 115
8 1-Speed Positioning - DRVI/DRVA Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
8.2 Drive to Increment - DRVI Instruction
8.2.3 Function and Operation
This instruction uses a relative drive method to perform a 1-speed positioning instruction. For this instruction,
the transfer distance from the current position to the target position should be specified together with a plus or
minus sign. This method is also referred to as the incremental (relative) drive method.
→ For details on the "Instruction execution complete" flag, refer to Subsection 4.7.4.
→ For details on the maximum speed, bias speed, acceleration time, and deceleration time, refer to
Section 4.2.
Command
input
FNC 158
DRVI
S
2•
S
1•
D
1•
D
2•
Acceleration
time
Deceleration
time
Speed
Maximum speed
Output pulse
S
2•
frequency
Number of output
pulses
S
1•
Bias
speed
Time
Instruction execution
"Instruction
execution complete" flag
M8029
ON
1) For
S1
, specify the number of output pulses (relative address value).
Setting range
16-bit operation
32-bit operation
-32,768 to +32,767
-999,999 to +999,999
2) For
S2
, specify the output pulse frequency.
16-bit operation
Setting range
10 to 32,767(Hz)
When a high-speed output special
10 to 200,000(Hz)
10 to 100,000(Hz)
adapter is used
32-bit operation
When a transistor output from the
main unit is used
3) For
4) For
D
1
, specify the pulse output number in the range of Y000 to Y003.
, specify the rotation direction signal output device number.
D2
When a high-speed output special adapter is used as a destination for pulse output on a FX3U PLC, use
the output shown in the following table for rotation direction signals.
When a built-in transistor output is used as a destination for pulse output on a FX3G/FX3U/FX3UC PLC,
use transistor output for signals rotation direction.
High-speed output special
adapter connection position
Pulse output
destination device
Rotation direction
output
= Y000
= Y001
= Y002
= Y003
D
2
D
1
= Y004
= Y005
= Y006
= Y007
1st adapter
2nd adapter
D2
D1
D2
D1
D2
D1
B - 116
8 1-Speed Positioning - DRVI/DRVA Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
8.2 Drive to Increment - DRVI Instruction
A
B
The rotation direction ON/OFF status of the specified device is shown in the following table.
During instruction execution, however, do not use the output
D2
for other purposes.
ON/OFF status of device
Rotation direction (increase/decrease current value)
D
2
specified by
S1
If the number of output pulses specified by
performed in the forward rotation direction.
is a positive number, the operation will be
ON
D1
Forward rotation (Outputting pulses from
will increase the current value.)
S1
If the number of output pulses specified by
is a negative number, the operation will
OFF
be performed in the reverse rotation direction.
D1
Reverse rotation (Outputting pulses from
will decrease the current value.)
Apx.
8.2.4 Important Points
→ For the important points of programming, refer to Section 4.7.
• If an operand is changed during instruction execution, the change will be ignored and the operation will not
be affected.
Note that the changed operand will be enabled at the next activation of the instruction.
• If the instruction activation contact is turned off during execution of the instruction, the speed will
decelerate and the operation will stop.
In this case, the "Instruction execution complete" flag (M8029) will not be turned on.
• If the limit flag (forward limit relay or reverse limit relay) in the operation direction is turned on, the speed
will decelerate and the operation will stop.
In this case, the "Instruction execution abnormal end" flag (M8329) will be turned on when execution of the
instruction is complete.
→ For details on the "Instruction execution abnormal end" flag, refer to Subsection 4.7.4.
• While the "pulse output monitor" (BUSY/READY) flag is on, a positioning instruction (including PLSR and
PLSY) that uses the same output cannot be executed.
If the "pulse output monitor" (BUSY/READY) flag is still on after the instruction activation contact is turned
off, do not execute a positioning instruction (including PLSR and PLSY instructions) that uses the same
output number.
B - 117
8 1-Speed Positioning - DRVI/DRVA Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
8.3 Drive To Absolute - DRVA Instruction
8.3
Drive To Absolute - DRVA Instruction
8.3.1 Instruction Format
1. Instruction format
16-bit
32-bit
Instruction
symbol
Instruction
symbol
FNC 159
DRVA
Execution condition
Execution condition
instruction
instruction
D
DDRVA
Continuous
execution
type
Continuous
execution
type
DRVA
-
9 steps
17 steps
DRIVE TO
ABSOLUTE
-
Command
input
FNC 159
DRVA
S
1•
S
2•
D
1•
D
2•
2. Data setting
Operand type
Description
Data type
*1
Specifies the number of output pulses (absolute address).
S1
BIN16/32-bit
*2
Specifies the output pulse frequency.
S2
Specifies the pulse output number.
D
1
Bit
Specifies the rotation direction signal output destination device number.
D2
*1. Setting range : -32,768 to +32,767 for 16-bit operation
: -999,999 to +999,999 for 32-bit operation
*2. Setting range : 10 to 32,767 Hz for 16-bit operation
For 32-bit operation, however, the setting range is as shown in the following table.
Pulse output destination
High-speed output special adapter
FX3G/FX3U/FX3UC PLC Main unit (transistor output)
Setting range
10 to 200,000(Hz)
10 to 100,000(Hz)
FX3U PLC
3. Devices
Bit device
Word device
Others
Real Char-
Con-
Operand
type
System
user
Special
unit
System user
Digit designation
Index
num- acter Pointer
stant
ber string
X
Y M T C S
KnX KnY KnM KnS T C D R Uꢁ\Gꢁ
V
Z Modify K
H
3 3
3 3
E
"ꢁ"
P
Dꢁ.b
3
3
3
3
3
3
3
3
3 3 3 3 ꢁ4 3 3
3
3
S1
3 3 3 3 ꢁ4 3 3
S2
ꢁ
1
3
3
D
1
ꢁ
2
3
3 ꢁ3
D2
ꢁ1 : Specify Y000, Y001, or Y002*1 transistor output from the main unit, or specify Y000, Y001, Y002*3, or
Y003*3 from a high-speed output special adapter*2.
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. High-speed input/output special adapters can be connected only to the FX3U PLC.
*3. To use Y002 and Y003 with a high-speed output special adapter, connect a second high-speed output
special adapter.
Caution:
• To use an FX3U Series main unit of relay output type, be sure to connect a high-speed output special
adapter. Differential line drive type outputs will be used for the outputs of the high-speed output special
adapter.
B - 118
8 1-Speed Positioning - DRVI/DRVA Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
8.3 Drive To Absolute - DRVA Instruction
A
B
ꢁ2 : When a high-speed output special adapter is used as a destination for pulse output on a FX3U PLC,
use the output shown in the following table for rotation direction signals.
When a built-in transistor output is used as a destination for pulse output on a FX3G/FX3U/FX3UC PLC,
use transistor output for signals rotation direction.
→ For the outputs applicable with a High-speed output special adapter, refer to Section 4.9.
High-speed output special
adapter connection position
Rotation direction
output
Pulse output
= Y000
= Y001
= Y002
= Y003
D
2
D
1
= Y004
= Y005
= Y006
= Y007
1st adapter
2nd adapter
D2
D1
D2
D1
D2
Apx.
D1
ꢁ3 : Dꢁ.b is available only in FX3U and FX3UC PLCs. However, index modifiers (V and Z) are not available.
ꢁ4 : Only available for FX3U and FX3UC PLCs.
8.3.2 List of Related Devices
1. Special auxiliary relays
The following table shows the related special auxiliary relays. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Function
Attribute
Refer to
*1
*2
Y000
Y001
M8029
M8329
Y002
Y003
Subsection
4.4.2
"Instruction execution complete" flag
Read only
Read only
Read only
Drivable
Subsection
4.4.2
"Instruction execution abnormal end" flag
Subsection
4.4.3
M8340
M8343
M8344
M8348
M8349
M8350
M8353
M8354
M8358
M8359
M8360
M8363
M8364
M8368
M8369
M8370 "Pulse output monitor" (BUSY/READY) flag
M8373 Forward limit
Subsection
4.3.1
Subsection
4.3.1
M8374 Reverse limit
Drivable
Subsection
4.4.4
M8378 Positioning instruction activation
Read only
Drivable
Subsection
4.3.2
*3
M8379
Pulse output stop command
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. Cleared when the PLC switches from RUN to STOP.
B - 119
8 1-Speed Positioning - DRVI/DRVA Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
8.3 Drive To Absolute - DRVA Instruction
2. Special data registers
The following table shows the related special data registers. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Data
length
Default
value
Function
Refer to
*1
*2
Y000
Low-
Y001
Y002
Y003
Low-
order
Low-
order
Low-
order
D8340
D8350
D8351
D8360
D8361
D8370
D8371
order
Current value register
(PLS)
Subsection
4.4.1
32-bit
16-bit
32-bit
16-bit
0
High-
order
High-
order
High-
order
High-
order
D8341
Subsection
4.2.6
D8342
D8352
D8362
D8372
Bias speed (Hz)
0
100,000
1000
Low-
order
Low-
order
Low-
order
Low-
order
D8343
D8344
D8353
D8354
D8363
D8364
D8373
D8374
Subsection
4.2.5
Maximum speed (Hz)
Creep speed (Hz)
High-
order
High-
order
High-
order
High-
order
Subsection
4.2.4
D8345
D8355
D8365
D8375
Low-
order
Low-
order
Low-
order
Low-
order
D8346
D8347
D8356
D8357
D8366
D8367
D8376
D8377
Subsection
4.2.3
Zero return speed (Hz) 32-bit
50,000
High-
order
High-
order
High-
order
High-
order
Subsection
4.2.7
D8348
D8349
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
D8358
D8368
D8378
Acceleration time (ms)
16-bit
100
100
Subsection
4.2.8
D8359
D8369
D8379
Deceleration time (ms) 16-bit
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
B - 120
8 1-Speed Positioning - DRVI/DRVA Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
8.3 Drive To Absolute - DRVA Instruction
A
B
8.3.3 Function and Operation
This instruction uses an absolute drive method to perform a 1-speed positioning instruction.
For this instruction, the distance from the origin (zero point) to the target position should be specified.
→ For details on the "Instruction execution complete" flag, refer to Subsection 4.7.4.
→ For details on the maximum speed, bias speed, acceleration time,
and deceleration time, refer to Section 4.2.
Command
input
FNC 159
S
1•
S
2•
D
1•
D
2•
DRVA
Acceleration
time
Deceleration
time
Apx.
Speed
Maximum speed
Output pulse
S
2•
frequency
Number of output
pulses
S
1•
Bias
speed
Time
Instruction execution
"Instruction
execution complete" flag
M8029
ON
1) For
S1
, specify the number of output pulses (absolute address value).
Setting range
16-bit operation
32-bit operation
-32,768 to +32,767
-999,999 to +999,999
2) For
S2
, specify the output pulse frequency.
Setting range
16-bit operation
10 to 32,767(Hz)
When a high-speed output special adapter is used 10 to 200,000(Hz)
When a transistor output from the main unit is used 10 to 100,000(Hz)
32-bit operation
3) For
4) For
D
1
, specify the pulse output number in the range of Y000 to Y003.
, specify the rotation direction signal output device number.
D2
When a high-speed output special adapter is used as a destination for pulse output on a FX3U PLC, use
the output shown in the following table for rotation direction signals.
When a built-in transistor output is used as a destination for pulse output on a FX3G/FX3U/FX3UC PLC,
use transistor output for signals rotation direction.
High-speed output special adapter
Pulse output destination device Rotation direction output
connection position
= Y000
= Y001
= Y002
= Y003
D
2
D
1
= Y004
= Y005
= Y006
= Y007
1st adapter
2nd adapter
D2
D1
D2
D1
D2
D1
B - 121
8 1-Speed Positioning - DRVI/DRVA Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
8.3 Drive To Absolute - DRVA Instruction
The rotation direction ON/OFF status of the specified device is shown in the following table.
During instruction execution, however, do not use the output
D2
for other purposes.
ON/OFF status of device
Rotation direction (increase/decrease current value)
D
2
specified by
The rotation direction (normal or reverse
rotation) depends on which value is larger;
the number of output pulses specified by
D
1
Forward rotation (Outputting pules from
increase the current value.)
will
will
ON
D
1
Reverse rotation (Outputting pules from
reduce the current value.)
S
(absolute address) or the value
OFF
indicated in the current value register.
8.3.4 Important Points
→ For the important points of programming, refer to Section 4.7.
• If an the operand is changed during instruction execution, the change will be ignored and the operation will
not be affected.
Note that the changed operand will be enabled at the next activation of the instruction.
• If the instruction activation contact is turned off during execution of the instruction, the speed will
decelerate and the operation will stop.
In this case, the "Instruction execution complete" flag (M8029) will not be turned on.
• If the limit flag (forward limit relay or reverse limit relay) in the operation direction is turned on, the speed
will decelerate and the operation will stop. In this case, the "Instruction execution abnormal end" flag
(M8329) will be turned on when execution of the instruction is complete.
→ For details on the "Instruction execution abnormal end" flag, refer to Subsection 4.7.4.
• If the "pulse output monitor" (BUSY/READY) flag is on, a positioning instruction (including PLSR and
PLSY) that uses the same output cannot be executed.
If the "pulse output monitor" (BUSY/READY) flag is still on after the instruction activation contact is turned
off, do not execute a positioning instruction (including PLSR and PLSY instructions) that uses the same
output number.
B - 122
9 One-speed Interrupt constant quantity feed -DVIT Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
9.1 Instruction Format
A
B
9. One-speed Interrupt constant quantity feed -DVIT
Instruction
The built-in positioning function uses the Interrupt Positioning (DVIT) instruction to perform one-speed
interrupt constant quantity feed. If an FX3UC PLC Ver.1.30 or later is used, this instruction can change the
interruption signal input destination.
If an FX3U/FX3UC PLC Ver.2.20 or later is used, the interruption signal can be controlled with a user program.
The FX3G PLC does not support the interrupt positioning (DVIT) instruction.
→ For items to be observed in programming, refer to Section 4.7.
Apx.
9.1
Instruction Format
1. Instruction Format
16-bit
32-bit
Instruction
symbol
Instruction
symbol
FNC 151
DVIT
Execution condition
Execution condition
instruction
instruction
D
DDVIT
Continuous
execution
type
Continuous
execution
type
DVIT
-
9 steps
17 steps
DRIVE INTERRUPT
-
Command
input
FNC 151
DVIT
S
1•
S
2•
D
1•
D
2•
2. Data setting
Operand type
Description
Data type
*1
Specifies the number of pulses (relative address) to be output after interruption.
S1
BIN16/32-bit
Bit
*2
Specifies the output pulse frequency.
S
2
Specifies the pulse output number.
D1
Specifies the rotation direction signal output destination device number.
D2
*1. Setting range : -32,768 to +32,767 (excluding 0) for 16-bit operation
: -999,999 to +999,999 (excluding 0) for 32-bit operation
*2. Setting range : 10 to 32,767 Hz for 16-bit operation
For 32-bit operation, however, the setting range should be as shown in the following
table.
Pulse output destination
Setting range
10 to 200,000(Hz)
10 to 100,000(Hz)
FX3U PLC
High-speed output special adapter
Main unit (transistor output)
FX3U/FX3UC PLC
B - 123
9 One-speed Interrupt constant quantity feed -DVIT Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
9.1 Instruction Format
3. Devices
Bit device
Word device
Others
Real Char-
num- acter Pointer
ber string
Operand
type
Con-
stant
Special
unit
System user
Digit designation
System user
Index
Uꢁ\Gꢁ
X Y M T C S Dꢁ.b KnX KnY KnM KnS T
C
D
R
V
Z Modify
K
H
3
3
E
"ꢁ"
P
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
S1
3
3
3
3
3
S2
ꢁ
1
D1
ꢁ
2
3
3 ꢁ3
3
D2
ꢁ1 : Specify Y000, Y001, or Y002 transistor output from the main unit, or specify Y000, Y001, Y002*2, or
Y003*2 from a high-speed output special adapter*1.
*1. A high-speed input/output special adapter cannot be connected to the FX3UC PLC.
*2. To use Y002 and Y003 with a high-speed output special adapter, connect a second high-speed output
special adapter.
Point:
• To use an FX3U Series main unit of relay output type, be sure to connect a high-speed output special
adapter. Differential line drive type outputs will be used for the outputs of the high-speed output special
adapter.
ꢁ2 : When a high-speed output special adapter is used as a destination for pulse output on a FX3U PLC,
use the output shown in the following table for rotation direction signals.
When a built-in transistor output is used as a destination for pulse output on a FX3U/FX3UC PLC, use
transistor output for signals rotation direction.
→ For the outputs applicable with a High-speed output special adapter, refer to Section 4.9.
High-speed output special adapter connection position
Pulse output
Rotation direction output
= Y000
= Y001
= Y002
= Y003
D
2
D
1
= Y004
= Y005
= Y006
= Y007
1st adapter
D2
D1
D2
D1
2nd adapter
D2
D1
ꢁ3 : Dꢁ.b cannot be indexed by index registers (V and Z).
B - 124
9 One-speed Interrupt constant quantity feed -DVIT Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
9.2 List of Related Devices
A
B
9.2
List of Related Devices
1. Special auxiliary relays
The following table shows the related special auxiliary relays. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Function
Attribute
Refer to
*1
Y000
Y001
M8029
M8329
Y002
Y003
Subsection
4.4.2
"Instruction execution complete" flag
Read only
Read only
Drivable
Read only
Drivable
Drivable
Drivable
Read only
Drivable
Drivable
Drivable
Subsection
4.4.2
"Instruction execution abnormal end" flag
Interrupt input specification function enable
Apx.
Subsection
4.3.7
*3
*2
M8336
M8350
Subsection
4.4.3
M8340
M8343
M8344
M8347
M8348
M8349
M8360
M8363
M8364
M8367
M8368
M8369
M8370 "Pulse output monitor" (BUSY/READY) flag
M8373 Forward limit
Subsection
4.3.1
M8353
M8354
M8357
M8358
M8359
Subsection
4.3.1
M8374 Reverse limit
Subsection
4.3.8
*3*4
M8377
Interrupt signal logic reverse
Subsection
4.4.4
M8378 Positioning instruction activation
Subsection
4.3.2
*3
M8379
Pulse output stop command
Subsection
4.3.7
*5
*5
*5
*5
*3
M8460
M8464
M8461
M8465
M8462
M8463 User interrupt input command
CLEAR signal device specification function
Subsection
4.3.4
*5
*5
*5
*5
M8466
M8467
*3
enable
*1. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*2. This function is valid if Ver.1.30 or later is used.
*3. Cleared when the PLC switches from RUN to STOP.
*4. The logical NOT function is not valid for the user interrupt input command.
*5. This function is valid if Ver.2.20 or later is used.
B - 125
9 One-speed Interrupt constant quantity feed -DVIT Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
9.2 List of Related Devices
2. Special data registers
The following table shows the related special data registers. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Data
length value
Initial
Function
Refer to
*1
Y000
Y001
Y002
Y003
Specification of
interrupt input.
Subsection
4.3.7
*2
16-bit
32-bit
16-bit
-
D8336
Low-
order
Low-
order
Low-
order
Low-
order
D8340
D8341
D8350
D8351
D8360
D8361
D8370
Current value register
(PLS)
Subsection
4.4.1
0
0
High-
order
High-
order
High-
order
High-
order
D8371
Subsection
4.2.6
D8342
D8352
D8362
D8372
Bias speed (Hz)
Low-
order
Low-
order
Low-
order
Low-
order
D8343
D8344
D8353
D8354
D8363
D8364
D8373
D8374
Subsection
4.2.5
Maximum speed (Hz)
32-bit 100,000
High-
order
High-
order
High-
order
High-
order
Subsection
4.2.7
D8348
D8349
D8358
D8359
D8368
D8369
D8378
D8379
Acceleration time (ms) 16-bit
Deceleration time (ms) 16-bit
100
100
Subsection
4.2.8
Specifies the CLEAR
16-bit
Subsection
4.3.4
*3
*3
*3
*3
-
D8464
D8465
D8466
D8467
signal device.
*1. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*2. This function is valid if Ver.1.30 or later is used.
However, to specify the user interrupt input command, Ver.2.20 or later should be used.
*3. This function is valid if Ver.2.20 or later is used.
B - 126
9 One-speed Interrupt constant quantity feed -DVIT Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
9.3 Function and Operation
A
B
9.3
Function and Operation
Command
input
FNC 151
DVIT
S
1•
S
2•
D
1•
D
2•
→ For details on the maximum speed, bias speed,acceleration time, and deceleration time, refer to
Subsection 4.2.5 to Subsection 4.2.8.
Acceleration
time
Deceleration
time
Apx.
Speed
Maximum speed
Output pulse
S
2•
frequency
Number of output
pulses
S
1•
Bias
speed
Time
Instruction execution
Interrupt input
"Instruction
execution complete" flag
M8029
ON
1) For
S1
, specify the number of output pulses (relative address value).
Setting range
16-bit operation
32-bit operation
-32,768 to +32,767 (excluding 0)
-999,999 to +999,999 (excluding 0)
2) For
S2
, specify the output pulse frequency.
Setting range
16-bit operation
10 to 32,767(Hz)
When a high-speed output special adapter is used 10 to 200,000(Hz)
When a transistor output from the main unit is used 10 to 100,000(Hz)
32-bit operation
3) For
4) For
D
1
, specify the pulse output number in the range of Y000 to Y003.
, specify the rotation direction signal output device number.
D2
When a high-speed output special adapter is used as a destination for pulse output on a FX3U PLC, use
the output shown in the following table for rotation direction signals.
When a built-in transistor output is used as a destination for pulse output on a FX3U/FX3UC PLC, use
transistor output for signals rotation direction.
High-speed output special adapter number Pulse output destination device Rotation direction output
= Y000
= Y001
= Y002
= Y003
D
2
D
1
= Y004
= Y005
= Y006
= Y007
1st adapter
2nd adapter
D2
D1
D2
D1
D2
D1
B - 127
9 One-speed Interrupt constant quantity feed -DVIT Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
9.3 Function and Operation
The rotation direction ON/OFF status of the specified device is shown in the following table.
During instruction execution, however, do not use the output
D2
for other purposes.
ON/OFF status of device
Rotation direction (increase/decrease current value)
D
2
specified by
S1
If the number of pulses to be output after interruption (specified by
) is set to a positive
ON
number, the operation will be performed in the forward rotation direction.
D1
Forward rotation (Outputting pulses from
will increase the current value.)
S1
If the number of pulses to be output after interruption (specified by
) is set to a
OFF
negative number, the operation will be performed in the reverse rotation direction.
D1
Reverse rotation (Outputting pulses from
will decrease the current value.)
5) The interrupt input signal depends on the pulse output of as shown in the following table.
D
1
Use an FX3UC PLC Ver.1.30 or later to use the interrupt input specification function.
Use an FX3U/FX3UC PLC Ver.2.20 or later to set the user interrupt input command.
Interrupt input signal
Pulse output
destination
device
If it is not necessary to use the
interrupt input specification
function (M8336 = OFF), or if the
FX3UC PLC below Ver.1.30 is used
If it is necessary to use the interrupt input
specification function
(M8336 = ON)
D8336=H{ { { {
X000
X001
X002
X003
D
1
= Y000
= Y001
= Y002
Interrupt input for Y000
(pulse output destination device)
Interrupt input for Y001
D1
(pulse output destination device)
Interrupt input for Y002
(pulse output destination device)
D1
Interrupt input for Y003
(pulse output destination device)
*1
D1
= Y003
*1. Y003 can be specified as the pulse output destination only if two FX3U-2HSY-ADP adapters are connected to
the FX3U PLC.
Designation of interrupt input using M8336 interrupt input specification function:
1) Turn on the M8336.
2) Set the interrupt input number (X000 to X007) in D8336, or specify the user interrupt input
*1
command
.
→ For details on the specification method, refer to Subsection 4.3.7 or Subsection 4.5.1.
D8336=H{ { { {
Interrupt input for Y000
(pulse output destination device)
Interrupt input for Y001
(pulse output destination device)
Interrupt input for Y002
(pulse output destination device)
Interrupt input for Y003
(pulse output destination device)
Setting value
Description of setting
0
1
Specifies X000 for the interrupt input signal.
Specifies X001 for the interrupt input signal.
7
Specifies X007 for the interrupt input signal.
B - 128
9 One-speed Interrupt constant quantity feed -DVIT Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
9.3 Function and Operation
A
B
Setting value
Description of setting
Specifies a user interrupt input command*1 for the interrupt input
signal.
Pulse output destination device
User interrupt input command
Y000
Y001
Y002
M8460
M8461
M8462
M8463
*1
8
*2
Y003
*3
Apx.
Do not specify these values.
9 ~ E
F
Set "F" for a pulse output destination device if the device is not used for the Interrupt
Positioning (DVIT) instruction.
*1. A device can only be specified if an FX3U/FX3UC PLC Ver.2.20 or later is used.
When using an FX3UC PLC below Ver.2.20, if "8" is set and then the specified Interrupt Positioning (DVIT)
instruction turns ON, an operation error (error code: K6763) will occur, and the instruction will not cause any
operation.
*2. Y003 can be specified as the pulse output destination only if two FX3U-2HSY-ADP adapters are connected to
the FX3U PLC.
*3. After setting a number in the range of 9 to E for the interrupt input signal, if the corresponding Interrupt
Positioning (DVIT) instruction turns ON, an operation error (error code: K6763) will occur, and the instruction
will not cause any operation.
B - 129
9 One-speed Interrupt constant quantity feed -DVIT Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
9.3 Function and Operation
Example program:
The following program shows that the interrupt input for Y000 is set using the user interrupt input
command (M8460).
Specifies the
M8002
FNC 12
MOV
interrupt input for
Y000 in the user
interrupt input
HFFF8 D8336
Initial pulse
specification register.
Interrupt input
specification
function enable.
SET
M8336
Command
input
M8348
M101
M102
FNC151
DVIT
Executes DVIT
instruction
S
1•
S
2•
Y000
D
2•
Positioning
being
Normal Abnormal
end of end of
performed positioning positioning
(Y000)
M100
Interruption
positioning is
being
M100
M101
performed.
Interruption
positioning being
performed
M8029
"Positioning
operation
normal end"
flag
"Instruction execution complete" flag
M8329
"Positioning
operation
abnormal end"
flag
M102
"Instruction execution abnormal end" flag
FNC 06
FEND
Interruption
Interruption
condition
pointer Iꢁ0ꢁ
Interrupt input
signal: ON
SET
RST
M8460
M8460
Interrupt input
signal: OFF
FNC 03
IRET
END
After specifying a user interrupt input command for the interrupt input signal, if the specified device is
turned on, the number of pulses specified by will be output and then the operation will be stopped.
S1
Before activating the Interrupt Positioning instruction again, be sure to turn off the user interrupt input
command.
6) Interrupt input signal logical NOT
Turn the "Interrupt signal logic reverse" relay ON or OFF (see the following table) to specify the logic of
the interrupt input signal. However, if the user interrupt input command is set for the pulse output
destination device, the interrupt input signal logical NOT function cannot be used.
Pulse output
destination device
"Interrupt signal logic
reverse" relay
Description
M8347
M8357
M8367
M8377
D
1
= Y000
= Y001
= Y002
OFF: Positive logic (Turning the input ON will turn on
the interrupt input signal.)
ON: Negative logic (Turning the input OFF will turn
on the interrupt input signal.)
D1
D1
*1
D1
= Y003
*1. Y003 can be specified as the pulse output destination only if two FX3U-2HSY-ADP adapters are connected to
the FX3U PLC.
B - 130
9 One-speed Interrupt constant quantity feed -DVIT Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
9.3 Function and Operation
A
B
1. Interruption positioning operation
The interruption positioning operation is described below assuming that Y000 is specified as the pulse output
destination device by
D1
.
For this reason, if Y001, Y002, or Y003 is specified, it is necessary to change the output number of each
related flag.
→ For details on related flags, refer to Section 4.1 to Section 4.4, or Section 9.2.
Acceleration
time
(D8348)
Deceleration
time
(D8349)
Speed
Maximum speed
(D8344,D8343)
Apx.
Output pulse
S
2•
frequency
Number of output
pulses
S
1•
Bias speed
(D8342)
Time
Instruction execution
Interrupt input (X000)
"Instruction
execution complete" flag
M8029
ON
1) Execute the Interrupt Positioning (DVIT) instruction.
2) Transfer operation will be performed in the direction specified by the sign attached to the number of
output pulses (specified by ) at the speed specified by the output pulse frequency (specified by
).
3) If interrupt input X000 is turned on, pulses will be output until the number of output pulses reaches the
number specified by , and then the operation will stop.
S1
S2
S1
4) The "instruction execution complete" flag (M8029) will turn on, and the interruption positioning operation
will be completed.
→ For details on "Instruction execution complete" flag,
refer to Subsection 4.7.4.
B - 131
9 One-speed Interrupt constant quantity feed -DVIT Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
9.4 Important Points
9.4
Important Points
→ For details on the instruction activation timing, refer to Section 4.7.
• If the speed is too high for the number of pulses specified by
S1
, the frequency will be reduced so that
the speed can be reduced within the specified number of output pulses.
Number of output
pulses specified by
S1•
Output pulse
frequency
specified by
S
2•
Actual output
pulse frequency
Interrupt input
• If there is a possibility for the interrupt input instruction to be turned on during acceleration, specify the
number of pulses so that the relation can be set to "number of output pulses ≥ number of pulses needed for
acceleration + number of pulses needed for deceleration".
If the relation is set to "number of output pulses < number of pulses needed for acceleration + number of
pulses needed for deceleration", the operation will be as shown in the following figure:
Number of output
pulses specified by
S1•
Output pulse
frequency
specified by
S
2•
Interrupt input
• If the interrupt input turns ON before execution of the instruction, the operation will be performed in the
same way as the DRVI instruction.
• If an operand is changed during instruction execution, the change will be ignored and the operation will not
be affected. To reflect the change on the operation, turn off the command contact of the instruction, and
then turn it on again.
• If the instruction activation contact is turned off during operation, the speed will decelerate and the
operation will stop. In this case, the "Instruction execution complete" flag (M8029) will not be turned on.
• Input the interruption signal before the number of output pulses reaches 4,294,967,296. If the number of
pulses reaches 4,294,967,296 before inputting the interruption signal, the operation will stop, and the
"Instruction execution complete" flag (M8029) will be turned on.
→ For details on "Instruction execution complete" flag,
refer to Subsection 4.7.4.
• If the "pulse output monitor" (BUSY/READY) flag is on, a positioning instruction (including PLSR and
PLSY) that uses the same output cannot be executed.
If the "pulse output monitor" (BUSY/READY) flag is still on after the instruction activation contact is turned
off, do not execute a positioning instruction (including PLSR and PLSY instructions) that uses the same
output number.
•
If the forward limit relay or the reverse limit relay in the operation direction is turned on, the speed will
decelerate and the operation will stop. In this case, the "Instruction execution abnormal end" flag (M8329)
will turn when execution of the instruction is complete.
→ For details on "Instruction execution abnormal end" flag, refer to Subsection 4.7.4.
B - 132
9 One-speed Interrupt constant quantity feed -DVIT Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
9.4 Important Points
A
B
• The interrupt input cannot be used for the following items:
Interrupt inputs can only be specified when using Ver.1.30 or later.
- High-speed counter
- Input interruption
- Pulse catch
- SPD instruction
- DSZR instruction
- ZRN instruction
Apx.
B - 133
10 Variable Speed Operation (Variable Speed Pulse Output)-PLSV Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
10.1 Instruction Format
10. Variable Speed Operation
(Variable Speed Pulse Output)-PLSV Instruction
The built-in positioning function uses the variable speed pulse output (PLSV) instruction equipped with the
rotation direction designation function to perform variable speed operation. If an FX3U/FX3UC PLC Ver.2.20 or
later or FX3G PLC is used, this instruction can change the speed using the acceleration/deceleration speed.
10.1 Instruction Format
1. Instruction Format
16-bit
32-bit
Instruction
symbol
Instruction
symbol
FNC 157
PLSV
Execution condition
Execution condition
instruction
instruction
D
Continuous
execution
type
Continuous
execution
type
DPLSV
-
PLSV
-
9 steps
17 steps
PULSE V
2. Data setting
Operand type
S
Description
Data type
*1
BIN 16/32-bit
Specifies the output pulse frequency designation device number.
Specifies the pulse output device number.
D1
Bit
Specifies the rotation direction signal output destination device number.
D2
*1. Setting range : -32,768 Hz to -1 Hz and +1 Hz to 32,767 Hz for 16-bit operation. For the
32-bit operation, however, the setting range should be as shown in the following table.
Pulse output destination
Setting range
FX3U PLC
High-speed output special adapter -200,000 to -1 to +1 to 200,000(Hz)
FX3G/FX3U/FX3UC
PLC
Main unit (transistor output)
-100,000 to -1 to +1 to 100,000(Hz)
3. Devices
Bit device
System user
Word device
Others
Real Char-
Con-
Operand
type
System
user
Special
unit
Digit designation
Index
Z Modify
num- acter Pointer
stant
ber
string
X Y M T C S Dꢁ.b KnX KnY KnM KnS T C D R Uꢁ\Gꢁ
3 3 3 3 ꢁ4
V
K
H
E
"ꢁ"
P
3
3
3
3
3 3
3
3
3
S
ꢁ
1
3
D1
ꢁ
2
3
3 ꢁ3
3
D2
ꢁ1 : Specify Y000, Y001, or Y002*1 transistor output from the main unit, or specify Y000, Y001, Y002*3, or
Y003*3 from a high-speed output special adapter*2.
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. High-speed input/output special adapters can be connected only to the FX3U PLC.
*3. To use Y002 and Y003 with a high-speed output special adapter, connect a second high-speed output
special adapter.
B - 134
10 Variable Speed Operation (Variable Speed Pulse Output)-PLSV Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
10.2 List of Related Devices
A
B
Point:
• To use an FX3U Series main unit of relay output type, be sure to connect a high-speed output special
adapter. Differential line drive type outputs will be used for the outputs of the high-speed output special
adapter.
ꢁ2 : When a high-speed output special adapter is used as a destination for pulse output on a FX3U PLC,
use the output shown in the following table for rotation direction signals.
When a built-in transistor output is used as a destination for pulse output on a FX3G/FX3U/FX3UC PLC,
use transistor output for signals rotation direction.
High-speed output special
adapter connection position
Pulse output
Rotation direction output
= Y000
= Y001
= Y002
= Y003
D
2
D
1
= Y004
= Y005
= Y006
= Y007
Apx.
1st adapter
D2
D1
D2
D1
2nd adapter
D2
D1
ꢁ3 : Dꢁ.b is available only in FX3U and FX3UC PLCs. However, index modifiers (V and Z) are not available.
ꢁ4 : Only available for FX3U and FX3UC PLCs.
10.2 List of Related Devices
1. Special auxiliary relays
The following table shows the related special auxiliary relays. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Function
Attribute
Refer to
*1
*2
Y000
Y001
M8029
Y002
Y003
"Instruction execution complete" flag
Read only Subsection 4.4.2
Read only Subsection 4.4.2
Drivable Subsection 4.3.9
Read only Subsection 4.4.3
"Instruction execution abnormal end"
flag
M8329
*4
*3
M8338
Acceleration/deceleration
"Pulse output monitor" (BUSY/READY)
flag
M8340
M8350
M8360
M8370
M8343
M8344
M8348
M8353
M8354
M8358
M8363
M8364
M8368
M8373 Forword limit
Drivable Subsection 4.3.1
Drivable Subsection 4.3.1
Read only Subsection 4.4.4
M8374 Reverse limit
M8378 Positioning instruction activation
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
*4. Cleared when the PLC switches from RUN to STOP.
B - 135
10 Variable Speed Operation (Variable Speed Pulse Output)-PLSV Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
10.2 List of Related Devices
2. Special data registers
The following table shows the related special data registers. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Data
length value
Initial
Function
Refer to
*1
*2
Y000
Low-
Y001
Y002
Y003
Low-
order
Low-
order
Low-
order
D8340
D8350
D8351
D8360
D8370
order
Current value register
(PLS)
Subsection
4.4.1
32-bit
0
0
High-
order
High-
order
High-
order
High-
order
D8341
D8361
D8371
Subsection
4.2.6
D8342
D8352
D8362
D8372
Bias speed (Hz)
16-bit
Low-
order
Low-
order
Low-
order
Low-
order
D8343
D8344
D8353
D8354
D8363
D8364
D8373
D8374
Subsection
4.2.5
Maximum speed (Hz)
Acceleration time
32-bit 100,000
High-
order
High-
order
High-
order
High-
order
Subsection
4.2.7
D8348
D8349
D8358
D8359
D8368
D8369
D8378
D8379
16-bit
16-bit
100
100
*3
(ms)
Deceleration time
Subsection
4.2.8
*3
(ms)
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. This device is valid for the PLSV instruction only when the acceleration/deceleration operation is performed in
the FX3U/FX3UC PLC Ver. 2.20 or later or FX3G PLC.
B - 136
10 Variable Speed Operation (Variable Speed Pulse Output)-PLSV Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
10.3 Function and Operation
A
B
10.3 Function and Operation
The variable speed pulse output instruction changes the speed while using the rotation direction output.
The acceleration/deceleration function applies for the variable speed pulse output (PLSV) instruction, which
makes it possible to specify whether acceleration/deceleration will be used or not.
If an FX3UC PLC below Ver.2.20 is used, operation will be performed without acceleration/deceleration.
10.3.1 Operation without Acceleration/Deceleration (M8338 = OFF)
If the output pulse frequency
S
value is changed after turning the
acceleration/deceleration function (M8338) OFF, the variable speed
pulse output (PLSV) instruction will change the output frequency without
using acceleration/deceleration.
Apx.
M8001
M8338
Command
input
FNC 157
S
•
D
1•
D2•
PLSV
→ For details on the maximum speed and bias speed, refer to Subsection 4.2.5 and Subsection 4.2.6.
Speed
Time
S
•
100
250
500
250
Instruction
Activation contact
ON
OFF
1) For
S
, specify the output pulse frequency.
Even if pulses are being output, the output pulse frequency
Acceleration/deceleration, however, will not be performed.
S
can be changed freely.
Setting range
16-bit operation
-32,768 to -1 Hz, 1 to 32,767 Hz
When a high-speed output special
adapter is used
-200,000 to -1 Hz, 1 to 200,000 Hz
32-bit operation
When a transistor output from the
main unit is used
-100,000 to -1 Hz, 1 to 100,000 Hz
2) For
3) For
D
1
, specify the pulse output number in the range of Y000 to Y003.
, specify the rotation direction signal output device number.
D2
When a high-speed output special adapter is used as a destination for pulse output on a FX3U PLC, use
the output shown in the following table for rotation direction signals.
When a built-in transistor output is used as a destination for pulse output on a FX3G/FX3U/FX3UC PLC,
use transistor output for signals rotation direction.
High-speed output special
adapter number
Pulse output
destination device
Rotation direction
output
= Y000
= Y001
= Y002
= Y003
D
2
D
1
= Y004
= Y005
= Y006
= Y007
1st adapter
2nd adapter
D2
D1
D2
D1
D2
D1
B - 137
10 Variable Speed Operation (Variable Speed Pulse Output)-PLSV Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
10.3 Function and Operation
The rotation direction ON/OFF status of the specified device is shown in the following table.
During instruction execution, however, do not use the output
D2
for other purposes.
ON/OFF status of
device specified
Rotation direction (increase/decrease current value)
D2
by
S
If the number of output pulses specified by
is a positive number, the operation will
ON
be performed in the forward rotation direction.
D
1
Forward rotation (Outputting pulses from
If the number of output pulses specified by
will increase the current value.)
S
is a negative number, the operation
OFF
will be performed in the reverse rotation direction.
D1
Reverse rotation (Outputting pulses from
will decrease the current value.)
10.3.2 Operation with Acceleration/Deceleration (M8338 = ON)
If the output pulse frequency
S
value is changed after turning the
acceleration/deceleration (M8338) ON, the variable speed pulse output
(PLSV) instruction will accelerate or decelerate to the changed output.
If a FX3UC PLC below Ver.2.20 is used, operation will be performed without acceleration/deceleration.
M8000
M8338
Command
input
FNC 157
S
•
D
1•
D2•
PLSV
→ For details on the maximum speed, bias speed, acceleration time, and deceleration time, refer to
Subsection 4.2.5 to Subsection 4.2.8.
Maximum speed Initial value: 100,000 Hz
Output
pulse
Speed
frequency
S
•
Bias speed
Time
Acceleration time
Initial value: 100 ms
Deceleration time
Bias speed
Initial value: 0 Hz
Initial value: 100 ms
250
S
•
100
250
500
ON
Instruction
Activation contact
OFF
1) For
S
, specify the output pulse frequency.
Even if pulses are being output, the output pulse frequency
deceleration will be performed.
S
can be changed freely. Acceleration/
Setting range
16-bit operation
-32,768 to -1 Hz, 1 to 32,767 Hz
When a high-speed output special
adapter is used
-200,000 to -1 Hz, 1 to 200,000 Hz
-100,000 to -1 Hz, 1 to 100,000 Hz
32-bit operation
When a transistor output from the
main unit is used
2) For
D1
, specify the pulse output number in the range of Y000 to Y003.
B - 138
10 Variable Speed Operation (Variable Speed Pulse Output)-PLSV Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
10.3 Function and Operation
A
B
3) For
D
2
, specify the rotation direction signal output device number.
When a high-speed output special adapter is used as a destination for pulse output on a FX3U PLC, use
the output shown in the following table for rotation direction signals.
When a built-in transistor output is used as a destination for pulse output on a FX3G/FX3U/FX3UC PLC,
use transistor output for signals rotation direction.
High-speed output special
adapter number
Pulse output
Rotation direction
output
destination device
= Y000
= Y001
= Y002
= Y003
D
2
D
1
= Y004
= Y005
= Y006
= Y007
1st adapter
D2
D1
D2
D1
2nd adapter
Apx.
D2
D1
The rotation direction ON/OFF status of the specified device is shown in the following table.
During execution of this instruction, however, do not use the output
D2
for other purposes.
ON/OFF status of device
Rotation direction (increase/decrease current value)
D
2
specified by
S
If the number of output pulses specified by
is a positive number, the operation
ON
will be performed in the forward rotation direction.
D
1
Forward rotation (Outputting pulses from
If the number of output pulses specified by
will increase the current value.)
is a negative number, the
S
OFF
operation will be performed in the reverse rotation direction.
D1
Reverse rotation (Outputting pulses from
will decrease the current value.)
B - 139
10 Variable Speed Operation (Variable Speed Pulse Output)-PLSV Instruction
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
10.4 Important Points
10.4 Important Points
→ For important programming points, refer to Section 4.7.
• During pulse output operation, if the output pulse frequency
S
is changed to "K0", the PLC will reduce
the speed and then stop the pulse outputting operation if the acceleration/deceleration function is ON.
However, if the acceleration/deceleration function is not activated, the PLC will immediately stop the pulse
outputting operation.
Before outputting pulses again, check that the "pulse output monitor" (BUSY/READY) flag is off, and then
wait until 1 or more cycles of operation have been completed. After that, set (change) the output pulse
frequency to a value other than "K0".
• During pulse outputting operation, do not change the sign attached to the output pulse frequency
value
If it is necessary to change the sign, stop the servo motor first by setting the output pulse frequency value
to "K0", and wait for the motor to stop completely after decelerating to stop. And then, change the
sign attached to the output pulse frequency value
If the sign attached to the output pulse frequency value
S
.
S
S
.
S
is changed during pulse outputting
operation, the operation may be changed as follows, and the machine, therefore, may be damaged:
1) The pulse outputting operation may be stopped.
2) "Pulse output monitor" (BUSY/READY) flag may be turned off.
(The pulse outputting operation may be stopped, but the motor may not be stopped immediately.)
3) Operation may be performed in the specified direction at the frequency specified by the output
pulse frequency value
S
.
• If the instruction activation contact is turned off during pulse outputting operation while the acceleration/
deceleration function is ON, the speed will decelerate and the operation will stop.
If the instruction activation contact is turned off during pulse outputting operation while the acceleration/
deceleration function is OFF, the operation will stop immediately. In both cases, the "Instraction execution
complete" flag (M8029) will not turn on.
• If a limit flag (forward / reverse rotation) in the operation direction is turned on, the operation will stop
immediately. In this case, the "Instruction execution abnormal end" flag (M8329) will turn on when
execution of the instruction is complete.
→ For details on the "Instruction execution abnormal end" flag, refer to Subsection 4.7.4.
• If the "pulse output monitor" (BUSY/READY) flag is on, a positioning instruction (including PLSR and
PLSY) that uses the same output cannot be executed.
If the "pulse output monitor" (BUSY/READY) flag is still on after the instruction activation contact is turned
off, do not execute a positioning instruction (including PLSR and PLSY instructions) that uses the same
output number.
• After executing the instruction, the rotation direction signal output will turn off.
1. Important items for FX3UC PLCs below Ver.2.20
• Acceleration/deceleration will not be performed when starting or stopping the operation. For this reason, if
it is necessary to use the cushion start function or the cushion stop function, increase/decrease the output
pulse frequency value
S
using the FNC67 (RAMP) instruction, etc.
2. Important items for FX3U/FX3UC PLCs Ver.2.20 or later and FX3G
PLCs
•
If acceleration/deceleration is enabled, the variable speed pulse output (PLSV) instructions for all of the
pulse output destination devices will use acceleration/deceleration. This means that acceleration/
deceleration cannot be specified separately for each pulse output destination device.
B - 140
11 Batch Data Positioning Mode (TBL Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
11.1 Instruction Format
A
B
11. Batch Data Positioning Mode (TBL Instruction)
If GX Developer Ver.8.23Z or later is used, the positioning instructions
shown below can be preliminarily set in the positioning tables. After that,
if a table is specified, the positioning operation of the specified table will
be performed.
Instruction
Description
Apx.
*1
One-speed interrupt constant quantity feed (Interrupt positioning)
DVIT (FNC151)
PLSV(FNC157) Variable speed operation (Variable Speed Pulse Output)
DRVI(FNC158)
DRVA(FNC159)
Drive to Increment
Drive to Absolute
1-speed
positioning
*1. Only available for FX3U and FX3UC PLCs.
11.1 Instruction Format
1. Instruction Format
16-bit
instruction
32-bit
Instruction
symbol
Instruction
symbol
FNC 152
Execution condition
Execution condition
instruction
D
TBL
-
-
DTBL
-
Continuous
execution
type
17 steps
TABLE
Command
input
FNC152
DTBL
D
n
2. Data setting
Operand type
Description
Data type
Bit
Specifies the pulse output number.
D
n
Specifies the table number (1 to 100) to be executed.
BIN 32-bit
3. Devices
Bit device
Word device
Others
Real Char-
num- acter Pointer
ber string
Operand
type
Con-
stant
Special
unit
System user
Digit designation
System user
Index
Modify
X
Y M T C S Dꢁ.b KnX KnY KnM KnS T
C
D
R Uꢁ\Gꢁ V
Z
K
H
E
"ꢁ"
P
ꢁ
1
D
n
3
3
ꢁ1 : Specify Y000, Y001, or Y002*1 transistor output from the main unit, or specify Y000, Y001, Y002*3, or
Y003*3 from a high-speed output special adapter*2.
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. High-speed input/output special adapters can be connected only to the FX3U PLC.
*3. To use Y002 and Y003 with a high-speed output special adapter, connect a second high-speed output
special adapter.
Point:
To use an FX3U Series main unit of relay output type, be sure to connect a high-speed output special adapter.
Differential line drive type outputs will be used for the outputs of the high-speed output special adapter.
B - 141
11 Batch Data Positioning Mode (TBL Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
11.2 List of Related Devices
11.2 List of Related Devices
1. Special auxiliary relays
The following table shows the related special auxiliary relays. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations.
Device number
Function
Attribute
Refer to
*1
*2
Y000
Y001
Y002
Y003
Subsection
4.4.2
M8029
"Instruction execution complete" flag
Read only
Read only
Drivable
Drivable
Read only
Drivable
Drivable
Drivable
Read only
Drivable
Drivable
Subsection
4.4.2
M8329
M8338
M8336
"Instruction execution abnormal end" flag
Subsection
4.3.9
*4, *7
Acceleration/deceleration operation
Subsection
4.3.7
*4, *5
Interrupt input specification function enable
Subsection
4.4.3
M8340
M8343
M8344
M8347
M8348
M8349
M8460
M8350
M8353
M8354
M8357
M8358
M8359
M8461
M8360
M8363
M8364
M8367
M8368
M8369
M8462
M8370 "Pulse output monitor"(BUSY/READY) flag
M8373 Forward limit
Subsection
4.3.1
Subsection
4.3.1
M8374 Reverse limit
Subsection
4.3.8
*4, *6
M8377
Interrupt signal logic reverse
Subsection
4.4.4
M8378 Positioning instruction activation
Subsection
4.3.2
*4
M8379
M8463
Pulse output stop command
Subsection
4.3.7
*3*, 4
User interrupt input command
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. Only available for FX3U/FX3UC PLC Ver. 2.20 or later.
*4. Cleared when the PLC switches from RUN to STOP.
*5. Only available for FX3U/FX3UC PLC Ver. 1.30 or later.
*6. The logical NOT function is not valid for the user interrupt input command.
*7. Only available for FX3U/FX3UC PLC Ver. 2.20 or later and FX3G PLC.
B - 142
11 Batch Data Positioning Mode (TBL Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
11.2 List of Related Devices
A
B
2. Special data registers
The following table shows the related special data registers. Note that Y000, Y001, Y002, and Y003 are
devices that determine the pulse output destinations. To set the constants shown in the shaded area, set the
positioning parameters.
→ For details on the positioning parameters, refer to Section 11.4.
Device number
Data
length value
Initial
Function
Refer to
*1
*2
Y000
Y001
Y002
Y003
Specification of
Subsection
4.3.7
D8336
Low-
16-bit
32-bit
16-bit
-
*3
interrupt input.
Low-
order
Low-
order
Low-
order
D8340
D8341
D8350
D8351
D8360
D8370
order
Current value register
(PLS)
Subsection
4.4.1
Apx.
0
0
High-
order
High-
order
High-
order
High-
order
D8361
D8371
Subsection
4.2.6
D8342
D8352
D8362
D8372
Bias speed (Hz)
Low-
order
Low-
order
Low-
order
Low-
order
D8343
D8344
D8353
D8354
D8363
D8364
D8373
D8374
Maximum speed
(Hz)
Subsection
4.2.5
32-bit 100,000
High-
order
High-
order
High-
order
High-
order
Subsection
4.2.4
D8345
D8355
D8365
D8375
Creep speed (Hz)
16-bit
32-bit
1000
Low-
order
Low-
order
Low-
order
Low-
order
D8346
D8347
D8356
D8357
D8366
D8367
D8376
D8377
Zero return speed
(Hz)
Subsection
4.2.3
50,000
High-
order
High-
order
High-
order
High-
order
Acceleration time
Subsection
4.2.7
D8348
D8349
D8358
D8359
D8368
D8369
D8378
D8379
16-bit
16-bit
100
100
*4
(ms)
Deceleration time
Subsection
4.2.8
*4
(ms)
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. Devices related to Y003 (pulse output destination) are only valid if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
*3. This function is valid if Ver.1.30 or later is used.
However, the user interrupt input command can be specified only if the FX3U/FX3UC PLC Ver.2.20 or later is
used.
*4. This device is valid for the PLSV instruction only when the acceleration/deceleration operation is performed in
the FX3U/FX3UC PLC Ver. 2.20 or later or FX3G PLC.
B - 143
11 Batch Data Positioning Mode (TBL Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
11.3 Function and Operation
11.3 Function and Operation
Preliminarily set the positioning parameters using GX Developer, and then specify the pulse output destination
D
and the positioning table number (n) for the DTBL instruction in order to carry out positioning.
Use GX Developer Ver.8.23Z or later to set the positioning parameters.
The "number of pulses" and "frequency" set by the positioning parameters in each positioning table can be
changed using the program, display module, or HMI.
→ For details on positioning parameters, refer to Section 11.4.
Positioning table setting
Specifies the pulse output destination
device for the positioning table to be
activated.
A
Command
input
B
FNC152
DTBL
D
n
Specifies the positioning
table number to be activated.
C
D
E
Constant setting
As shown in the following table, each positioning instruction consists of the positioning type (4 types in total),
number of pulses (pls), frequency (Hz), etc.
For further information on the operation of each instruction, refer to the description of each instruction.
Instruction and its operand to be activated
Operand
Positioning type
D
E
A
B
Refer to
Instruction
word
C
Number of Output pulse Pulse output
output pulses frequency destination
device
Rotation
direction
signal
S
1
S
2
D1
D1
D1
D1
D2
D2
D2
D2
DDVIT(Interrupt Positioning)
DPLSV(Variable Speed Pulse Output)
DDRVI(Drive to Increment)
DDVIT
DPLSV
DDRVI
DDRVA
Chapter 9
S
Chapter 10
Section 8.2
Section 8.3
S1
1
S
2
2
S
S
DDRVA(Drive to Absolute)
Command
input
FNC{{{
*1
*1 PLSV(FNC157) has only 3 operands. It has no operand of number of output pulses.
B - 144
11 Batch Data Positioning Mode (TBL Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
11.4 Positioning Parameter Setting
A
B
11.4 Positioning Parameter Setting
Use GX Developer Ver.8.23Z or later to set the positioning parameters in the FX3U/FX3UC PLC. Use GX
Developer Ver.8.72A or later to set the positioning parameters in the FX3G PLC.
The "number of pulses" and "frequency" set by the positioning parameters in a positioning table can be
changed using the program, display module, or HMI.
→ To change the set "number of pulses" or "frequency", refer to Subsection 11.4.2.
11.4.1 Positioning Parameter Setting Using GX Developer
Assuming that GX Developer Ver.8.23Z or later is used, this section describes how to set the positioning
parameters.
Apx.
1
Open the "parameter setting" window.
On the project tree displayed on the left side of the screen, double-click "Parameter" and then "PLC
Parameter".
If the project tree is not displayed, click "View" on the menu bar, and then click "Project data list"
B - 145
11 Batch Data Positioning Mode (TBL Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
11.4 Positioning Parameter Setting
2
Set the memory capacity.
Click on the "Memory capacity" tab, and then click on the "Positioning Instruction Setting" check
box to enter a check in the box.
*1
Enter a check.
Setting item
Description of setting
Setting range
*1
Memory capacity
Set the capacity of the program memory. Initial value: 16000
Set the capacity for the comments to be stored in the PLC. Initial
value: 0
Device comment: 50 points/block (500 steps)
Comment capacity
Refer to the
programming
manual.
Set the capacity for the file registers. Initial value: 0
File registers: 500 points/block (500 steps)
File register capacity
Program capacity
Displays the number of steps that can be used for the sequence
program.
Special Function Memory Set whether the special unit initial data setting function and the
-
-
capacity
positioning data setting function should be enabled.
Enter a check in the check box to enable the special function unit/
block initial data setting function. Use the "I/O Assignment Setting"
tab to set the initial value of a special unit.
Special Function Block
*2
Settings
Enter a check in the check box to enable the TBL (FNC152)
instruction setting function. Use the "Positioning Data Setting" tab to
set the positioning data.
Positioning Instruction
settings
-
*1. The initial value is 8000 steps for GX Developer below Ver.8.22Y.
The initial value is "8000 steps" in the FX3G PLC.
*2. Only available for FX3U and FX3UC PLCs.
B - 146
11 Batch Data Positioning Mode (TBL Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
11.4 Positioning Parameter Setting
A
B
3
Set the positioning data.
After entering a check, positioning data can be set. Use the FX3U/FX3UC PLC of Ver.2.20 or later or
FX3G PLC to use "Positioning".
1. Click on the "Positioning" tab.
On the "Memory Capacity" tab, preliminarily enter a check in "Positioning Instruction Setting" check box to set
the positioning data setting table on the "Positioning" tab.
2. Set the positioning constants to be used for TBL (FNC152) instruction.
Apx.
Setting
range
Setting item
Description of setting
1/10 or less
of the maxi-
mum speed
Bias speed (Hz)
Sets the bias speed for each pulse output number. Initial value: 0
Maximum speed (Hz) Sets the maximum speed for each pulse output number. Initial value: 100000
*1
10 to
Sets the creep speed of the DSZR (FNC150) instruction for each pulse output
number. Initial value: 1000
Creep speed (Hz)
*2
32767
Zero return speed
(Hz)
Sets the zero return speed of the DSZR (FNC150) instruction for each pulse
output number. Initial value: 50000
*1
Acceleration time (ms) Sets the acceleration time for each pulse output number. Initial value: 100
Deceleration time (ms) Sets the deceleration time for each pulse output number. Initial value: 100
50 to 5000
50 to 5000
*3
Sets the interrupt input for each pulse output number to activate the DVIT
(FNC151) instruction. If a pulse output destination device does not use the
DVIT instruction, specify a user interrupt input command (M).
Interrupt input of
Initial setting:
Setting range
Shown on
left side
*5
Y000 (pulse output destination): X000
Y001 (pulse output destination): X001
Y002 (pulse output destination): X002
X000 to X007, M8460
X000 to X007, M8461
X000 to X007, M8462
DVIT instruction
*4
Y003 (pulse output destination): X003
X000 to X007, M8463
Y0
Y1
Sets data in this area if Y000 is specified as the pulse output destination device.
Sets data in this area if Y001 is specified as the pulse output destination device.
Sets data in this area if Y002 is specified as the pulse output destination device.
-
-
-
*6
Y2
*4
Sets data in this area if Y003 is specified as the pulse output destination device.
-
Y3
Displays the "Individual Setting" window for the TBL (FNC152) instruction table
setting.
Individual setting
-
→For details on data setting, refer to the next page.
B - 147
11 Batch Data Positioning Mode (TBL Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
11.4 Positioning Parameter Setting
*1. When the destination for pulse output on a FX3U or FX3UC PLC is a built-in transistor output, the
setting range is 10 to 100,000 Hz.
If an FX3U PLC is used, and if the pulse output destination is a FX3U-2HSY-ADP, the setting range will
be 10 to 200,000 Hz.
*2. Set the creep speed so that the relation with the other speeds is "bias speed ≤ creep speed ≤
maximum speed."
*3. The set interrupt input cannot be simultaneously used for a high-speed counter, input interruption,
pulse catch input, input for the SPD (FNC67) instruction, or for other interrupt inputs of the DVIT
(FNC151) instruction.
*4. Note that this item can only be set if two FX3U-2HSY-ADP adapters are connected to the FX3U PLC.
*5. Only available for FX3U and FX3UC PLCs.
*6. Y002 is not available in 14-point and 24-point type FX3G PLC.
3. Click on the "Individual Setting" button to display the "Positioning instruction setting"
window. In this window, set the positioning table for each pulse output destination device.
Setting item
Description of setting
Setting range
Y0
Y1
Click this tab to set the positioning table for Y000 (pulse output destination).
Click this tab to set the positioning table for Y001 (pulse output destination).
Click this tab to set the positioning table for Y002 (pulse output destination).
-
-
-
*1
Y2
Y3
*2
Click this tab to set the positioning table for Y003 (pulse output destination).
-
*3
Set the rotation direction output number.
*6
Initial setting:
Y010 for Y000 (pulse output destination)
Y011 for Y001 (pulse output destination)
Y012 for Y002 (pulse output destination)
Y000 to Y357
M0 to M7679
S0 to S4095
Rotation direction
signal
*2
Y013 for Y003 (pulse output destination)
Set the first device number to store the set data (number of pulses, frequency).
D0 to D6400
Head Address
No.
*4
*7
Starting from the set device, 1600 points will be occupied. Initial setting: R0 R0 to R31168
Table number
Data can be set for tables 1 to 100.
-
Select a positioning type from the following types:
Positioning
Instruction
*5
-
DDVIT (Interrupt positioning) , DPLSV (Variable Speed Pulse Output),
DDRVI (Drive to Increment), DDRVA (Drive to Absolute)
Set the number of pulses to be output to perform the specified type of
positioning operation (instruction).
Pulse
*8
Set the speed (output pulse frequency) to perform the specified type of
positioning operation (instruction).
Frequency (Hz)
"Up" button
"Down" button
Click this button to move the cursor up by 1 line
(to select the line just above the cursor-positioned line).
-
-
Click this button to move the cursor down by 1 line
(to select the line just below the cursor-positioned line).
B - 148
11 Batch Data Positioning Mode (TBL Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
11.4 Positioning Parameter Setting
A
B
Setting item
Description of setting
Click this button to insert a line at the specified position.
Setting range
"Insert" button
"Delete" button
-
-
Click this button to delete the selected line.
Click this button to delete all the data from the positioning table of the selected
pulse output destination device.
"Delete All" button
-
If this check box is checked, the positioning data will not be initialized when the
PLC power is turned ON. Enter a check in this check box to retain the
Positioning table
setting will not be changed data ("pulses" and "frequency" changed by the program, display
initialized when the module, or HMI) even after power-off and to use the changed data after turning
PLC is powered on on the power again. To use this function, set an uninterruptible power supply
type device as the first device.
-
*4
Click this button to write 1600 points of data ("pulses" and "frequency" set on
Apx.
"Write" button
-
-
the positioning table using GX Developer) starting from the first device of the
PLC.
*4
Click this button to read out 1600 points of data ("pulses" and "frequency" set
on the positioning table currently used) from the PLC starting from the first
device. At the completion of data reading, the data numbers will appear only if
"Positioning Instruction" is set for the data.
"Read" button
*1. Y002 is not available in 14-point and 24-point type FX3G PLC.
*2. Note that this item can only be set if two FX3U-2HSY-ADP adapters are connected to the FX3U PLC.
*3. To use an FX3U-2HSY-ADP, set the rotation direction signal depending on the pulse output destination
device as shown in the following table.
Pulse output destination device
Rotation direction signal
Y000
Y001
Y002
Y003
Y004
Y005
Y006
Y007
*4. 1200 in the FX3G series PLC.
*5. Only available for FX3U and FX3UC PLCs.
*6. Up to Y000 to Y177 in the FX3G series PLC.
*7. Up to D0 to D6800, R0 to R22800 in the FX3G series PLC.
*8. Refer to the description of the selected instruction (positioning type).
Positioning type
DDVIT (Interrupt positioning)
Refer to
Chapter 9
Chapter 10
Section 8.2
Section 8.3
DPLSV (Variable Speed Pulse Output)
DDRVI (Drive to Increment)
DDRVA (Drive to Absolute)
B - 149
11 Batch Data Positioning Mode (TBL Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
11.4 Positioning Parameter Setting
4
Transfer the parameters (+ sequence program) to the PLC.
1. Select "Online" from the tool menu, and then select "Write to PLC". The "Write to PLC"
window will appear.
*1
*1. For Ver. 8.13P to 8.24A of GX Developer, the PLC type is FX3UC.
2. Enter a check in the "PLC parameter" check box, and then click the "Execute" button.
The selected parameter data will be transferred to the PLC. When the PLC is started (enters the RUN mode),
the transferred parameter data will be enabled. If the communication conditions set on the "PLC system(2)"
screen are changed, be sure to power the PLC OFF, and then ON again.
B - 150
11 Batch Data Positioning Mode (TBL Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
11.4 Positioning Parameter Setting
A
B
11.4.2 Changing of Set Positioning Parameters (Number of Pulses and Frequency)
The "pulses" and "frequency" set by the positioning parameters in a positioning table will be stored in the
devices starting from the specified first device as shown below. The set "pulses" and "frequency" can be
changed using a display module or HMI.
If the Head Address is set to "R0":
Pulse
output Positioning Number of
Frequency
table No.
destination
device
pulses
Apx.
1
2
3
R1,R0
R5,R4
R9,R8
R3,R2
R7,R6
R11,R10
Y000
Y001
Y002
Y003
100
1
2
R397,R396
R401,R400
R405,R404
R409,R408
R399,R398
R403,R402
R407,R406
R411,R410
3
100
1
2
R797,R796
R801,R800
R805,R804
R809,R808
R799,R798
R803,R802
R807,R806
R811,R810
3
100
1
2
R1197,R1196 R1199,R1198
R1201,R1200 R1203,R1202
R1205,R1204 R1207,R1206
R1209,R1208 R1211,R1210
3
100
R1597,R1596 R1599,R1598
Caution:
If "positioning type" is set to "DPLSV (Variable Speed Pulse Output)", the "frequency (Hz)" value set on the
screen will be stored as the set number of pulses, and the device for "frequency" will be "K0".
To use the "pulses" and "frequency" changed by a display module or HMI even after turning the
power OFF and then ON again:
To use the "pulses" and "frequency" changed
by a display module or HMI even after turning
the power OFF and then ON again, enter a
check in the "Positioning table settings will not
be initialized when the PLC is powered on"
check box in the "Positioning instruction
Setting" window of the positioning parameters.
To use this function, use the uninterruptible
power supply type devices.
If this function is not set, the data set by the
positioning parameters will be initialized.
Enter a check.
B - 151
11 Batch Data Positioning Mode (TBL Instruction)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
11.4 Positioning Parameter Setting
To read out and store the "pulse" and "frequency" changed by a display module or HMI:
1) In the "Positioning instruction setting" window of the positioning parameters, enter a check in the
"Positioning table settings will not be initialized when the PLC is powered on" check box.
Enter a check.
2) Click on the "Read" button to read out the set data ("pulse" and "frequency") from the connected main
unit.
This is exclusively for the positioning table number with the positioning type specified.
Click the
"Read" button.
3) At the completion of register data reading, the data file will be stored.
B - 152
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
A
B
12. Examples of Programs
Assuming that the MELSERVO Series 1-axis servo amplifier is used for control, this chapter shows various
examples of programs.
For the connection examples of MELSERVO-C, -J2(S), -H, and -J3 Series, refer to the following chapters and
manuals.
→ Refer to Chapter 3 and the examples of connection shown in the Appendix.
→ Refer to the manual of your servo amplifier.
Apx.
Examples of programs
Relay ladder Step ladder
program program
Description
of
instruction
Operation
DOG Search Zero
Instruction
Mechanical zero
return
DSZR(FNC150) Subsection 12.2.1 Subsection 12.3.1 Section 6.2
ABS(FNC155) Section 12.5 Chapter 7
Return
Absolute position
detection
Reading of current
ABS value
-
Drive to Increment
Drive to Absolute
DRVI(FNC158) Subsection 12.2.1 Subsection 12.3.1 Section 8.2
DRVA(FNC159) Subsection 12.2.1 Subsection 12.3.1 Section 8.3
1-speed positioning
Batch data positioning mode
TBL(FNC152)
Section 12.4
-
Chapter 11
B - 153
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.1 Input/Output Assignment
12.1 Input/Output Assignment
The programs shown in this chapter use 1 axis for Y000 (pulse output destination device). If other pulse
output destination device are used, change various device numbers when reading the description.
Note that Y003 (pulse output destination device) can be used only if two FX3U-2HSY-ADP adapters are
connected to the FX3U PLC.
Input/output number
Signal
Connected to
Y000 Y001 Y002 Y003
*1
Pulse train
Y000 Y001 Y002 Y003
(pulse output destination)
*2, *3
Direction
Y004 Y005 Y006 Y007
Connected to MELSERVO Series
servo amplifier.
(rotation direction signal)
*3, *4
Y020 Y024 Y030 Y034
X004 X005 X006 X007
CLEAR signal
*4, *5
Zero-phase signal
*6
X014 X015 X016 X017
X020 X040 X050 X070
X021 X041 X051 X071
X022 X042 X052 X072
X023 X043 X053 X073
"Servo ready" signal
Immediate stop command
Zero return command
Jog (+) command
Jog (-) command
Connected to external switches.
Forward rotation positioning
command
X024 X044 X054 X074
X025 X045 X055 X075
Reverse rotation positioning
command
Stop command
X030 X034 X060 X064
X010 X011 X012 X013
X000 X001 X002 X003
X026 X046 X056 X076
*4, *5
Near-point signal (DOG)
Interrupt signal
Connected to sensors and limit switches.
*7
Forward rotation limit (LSF)
*7
X027 X047 X057 X077
X031 X035 X061 X065
X032 X036 X062 X066
Reverse rotation limit (LSR)
ABS(bit0)
ABS(bit1)
"Send data ready"
signal
X033 X037 X063 X067
Y021 Y025 Y031 Y035
Y022 Y026 Y032 Y036
To use absolute
positiondetection
system
Connected to Mitsubishi MELSERVO Series
servo amplifier
(MR-J2,MR-J2S, MR-J3, MR-H)
Servo-ON signal
"ABS data transfer
mode" signal
"ABS data
request" signal
Y023 Y027 Y033 Y037
*1. To use the "forward rotation pulse train" signal and "reverse rotation pulse train" signal of a FX3U-
2HSY-ADP, change the name of this signal to "forward rotation pulse train" signal when reading the
description.
*2. To use the "forward rotation pulse train" signal and "reverse rotation pulse train" signal of a FX3U-
2HSY-ADP, change the name of this signal to "reverse rotation pulse train" signal when reading the
description.
*3. If an FX3UC PLC below Ver.2.20 is used, exchange the direction signal output number with the CLEAR
signal output number.
*4. If the absolute position detection system is used, and if the DSZR instruction and ZRN instruction are
not used for the first zero return, this signal is not needed. To use the absolute position detection
system, refer to the following chapter and manual.
→ Refer to Chapter 7 and the manual of your servo amplifier.
*5. To use the ZRN instruction for zero return, assign the input number of the near-point signal (DOG) to
the zero-phase signal. This is needed since the ZRN instruction will not use the zero-phase signal.
B - 154
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.1 Input/Output Assignment
A
B
*6. To use pin 3 of the CN1 connector of the MR-CꢁA servo amplifier for the "servo ready" signal, set
parameter 21 as follows:
Series
Parameter number Setting value
21 020
MR-C
*7. To ensure safety, use a forward rotation limit switch and reverse rotation limit switch on both sides: the
PLC side and the servo amplifier side.
Note that the limit switches on the PLC side should be activated slightly earlier than the limit switches
on the servo amplifier side.
Reverse rotation limit 2 Reverse rotation limit 1
Forward rotation limit 1 Forward rotation limit 2
(Servo amplifier side) (Programmable controller side) (Programmable controller side) (Servo amplifier side)
LSR
LSF
Apx.
Servo motor
Reverse rotation
Forward rotation
B - 155
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.2 Programs for Forward/Reverse Rotation (Relay Ladder Program)
12.2 Programs for Forward/Reverse Rotation (Relay Ladder Program)
12.2.1 Example Program
Positioning operation will be performed using the absolute positioning method shown in the following chart:
→ For details on input/output assignment, refer to Section 12.1.
500,000
Output pulse frequency:
100,000 Hz
100
Origin
Acceleration/deceleration time:
100 ms
The following program is a relay ladder program.
Stops outputting Y000
X020
pulses. (Immediate stop)
Refer to Subsection 4.7.2.
M8349
Immediate stop
X014
Resets the "origin return
RST
RST
RST
M10
completion" flag.
Servo ready
Resets the "forward rotation
positioning completion" flag.
M12
Resets the "reverse rotation
positioning completion" flag.
M13
X026
Forward rotation limit(Y000)
Reverse rotation limit(Y000)
M8343
M8344
Forward rotation limit
X027
Reverse rotation limit
M8000
Enables the origin return
operation with CLEAR signal
outputting function. (CLEAR
signal: Y020)
FNC 12
MOVP
H0020 D8464
RUN monitor
M8464
M8341
M8000
Performs origin return in the
forward rotation direction.
M8342
RUN monitor
M8002
*1
*1
*1
*1
*1
FNC 12
DMOV
Sets the maximum speed.
K100000 D8343
K1000 D8345
K50000 D8346
100,000(Hz)
→D8344,D8343
Initial pulse
FNC 12
MOV
Sets the creep speed.
1,000(Hz) D8345
→
FNC 12
DMOV
Sets the origin return speed.
50,000(Hz) D8347,D8346
→
FNC 12
MOV
Sets the acceleration time.
100(ms) D8348
K100
K100
D8348
D8349
→
FNC 12
MOV
Sets the deceleration time.
100(ms) D8349
→
*1. If the initial values (maximum speed, acceleration/deceleration time, zero return speed, creep speed)
can be used, it is not necessary to create the program.
→ For the related devices, refer to Section 4.1 to Section 4.4.
B - 156
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.2 Programs for Forward/Reverse Rotation (Relay Ladder Program)
A
B
Resets the "zero
X021
M8348
M101
M102
RST
RST
RST
M10
M12
return completion"
flag.
Zero Positioning Normal Abnormal
return being
(Y000)
end of end of
Resets the "forward
rotation positioning
completion" flag.
Resets the "reverse
rotation positioning
completion" flag.
performed zero
zero
return return
M100
M13
Zero return being
performed
Zero return is being
performed.
M100
Y004
Zero return instruction
with DOG search
function
Apx.
X030
FNC 150
DSZR
X010
X004
Y000
Stop
command
(CLEAR signal: Y020)
Near-point
signal
Zero-
phase
Pulse
output
Rotation
direction
signal destination signal
number
M8029
"Zero return
SET
M10
completion" flag
"Execution
completion" flag
Normal end of zero
return
M101
M102
M8329
Abnormal end of
zero return
Abnormal
end
Resets the "forward
rotation positioning
completion" flag.
Resets the "reverse
rotation positioning
completion" flag.
X022 M8348
M104
RST
RST
M12
M13
JOG Positioning
(+) being
Completes
the JOG(+)
operation.
performed
*1
(Y000)
M103
JOG(+) operation is
being performed.
M103
JOG(+) operation is
being performed.
Performs the jogging
operation in the "+"
direction using the
drive to Increment
instruction.
X030
FNC 158
DDRVI
K999999 K30000 Y000
Y004
Stop
command
Number of Output
Pulse
output
Rotation
direction
output pulses pulse
(maximum value frequency destination signal
(Y004=ON)
in "+" direction)
number
X022
Completes the
JOG(+) operation.
M104
JOG(+)
M8329
Abnormal
end
Resets the "forward
rotation positioning
completion" flag.
X023 M8348
M106
RST
RST
M12
M13
JOG Positioning
(-) being
Completes
the JOG(-)
operation.
Resets the "reverse
rotation positioning
completion" flag.
performed
(Y000)
*1
JOG(-) operation is
being performed.
M105
M105
JOG(-) operation is
being performed.
Performs the jogging
operation in the "-"
direction using the
drive to Increment
instruction.
X030
FNC 158
DDRVI
K-999999 K30000 Y000
Y004
Stop
command
Number of Output
output pulses pulse
Pulse
output
Rotation
direction
(Y004=OFF)
(maximum value frequency destination signal
X023
in "-" direction)
number
Completes the
JOG(-) operation.
M106
JOG(-)
M8329
Abnormal
end
*1. The maximum transfer distance for each jogging operation is ±999,999 pulses (pulse output range of
FNC158 (DRVI) instruction). To move the workpiece further, execute the JOG command again.
B - 157
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.2 Programs for Forward/Reverse Rotation (Relay Ladder Program)
"Forward rotation
positioning
X024 M8348
M10
M108
M109
RST
RST
M12
M13
completion" flag
Position- Position- "Zero
Normal
end of
Abnormal
end of
ing in ing return
forward operation compl-
rotation being etion"
"Reverse rotation
positioning
completion" flag
positioning positioning
in forward in forward
direction performed flag
rotation
direction
rotation
direction
Positioning
M107
operation being
performed in
forward rotation
direction
M107
Y004
Positioning operation being
performed in forward rotation
direction
X030
FNC 159
DDRVA
Moves to absolute
position 500000
using the absolute
positioning
instruction.
(Y004=ON)
K500000 K100000 Y000
Stop
command
Designation Output
of absolute
position
Pulse Rotation
output direction
frequency destination signal
number
pulse
"Forward rotation
positioning
M8029
SET
M12
completion" flag
"Execution
completion"
flag
"Forward rotation
positioning normal
end" flag
M108
M8329
"Forward rotation
positioning
abnormal end" flag
M109
Abnormal end
"Forward rotation
positioning
X025 M8348
M10
M111
M112
RST
RST
M12
M13
completion" flag
Position- Position- "Zero
Normal
end of
Abnormal
end of
ing in ing return
"Reverse rotation
positioning
reverse operation compl- positioning positioning
rotation being
etion"
in reverse in reverse
rotation
direction
completion" flag
direction performed flag
rotation
direction
Positioning
(Y000)
operation being
performed in
reverse rotation
direction
M110
M110
Positioning operation being
performed in reverse
rotation direction
X030
Moves to absolute
position 100 using
the absolute
FNC 159
DDRVA
K100 K100000 Y000
Y004
Stop
command
Designation Output
of absolute pulse
position
Pulse Rotation
output direction
frequency destination signal
number
positioning
instruction.
(Y004=OFF)
"Reverse rotation
positioning
completion" flag
M8029
SET
M13
"Execution
completion"
flag
"Reverse rotation
positioning normal
end" flag
M111
M112
M8329
"Reverse rotation
positioning
abnormal end" flag
Abnormal end
END
B - 158
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.3 Programs for Forward/Reverse Rotation (Step Ladder (STL) Program)
A
B
12.3 Programs for Forward/Reverse Rotation (Step Ladder (STL) Program)
12.3.1 Example Program
Positioning operation will be performed using the absolute positioning method as shown in the following chart:
→ For details on input/output assignment, refer to Section 12.1.
500,000
Output pulse frequency:
100,000 Hz
100
Apx.
Origin
Acceleration/deceleration time:
100 ms
The following program uses the step ladder (STL) instruction.
Stops outputting Y000 pulses.
(Immediate stop) Refer to
Section 4.7.2.
X020
M8349
M10
Immediate stop
X014
Resets the "zero return
completion" flag.
RST
RST
RST
Servo ready
Resets the "forward rotation
positioning completion" flag.
M12
Resets the "reverse rotation
positioning completion" flag.
M13
X026
M8343
M8344
Forward limit (Y000)
Forward rotation limit
X027
Reverse limit (Y000)
Reverse rotation limit
M8000
Enables the zero return
operation with CLEAR signal
outputting function. (CLEAR
signal: Y020)
FNC 12
MOVP
H0020 D8464
M8464
RUN monitor
M8341
M8342
M5
M8000
Performs zero return in the
forward rotation direction.
RUN monitor
S0
S10
S11
S12
S13
M8349
Operation is stopped.
Zero
return
JOG
(+)
JOG
(-)
Positioning Positioning in Stoppage of Y0
in forward
rotation
direction
reverse
rotation
direction
pulse
outputting
operation
B - 159
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.3 Programs for Forward/Reverse Rotation (Step Ladder (STL) Program)
M8002
*1
*1
Sets the maximum speed.
100,000(Hz) D8344,D8343
FNC 12
DMOV
K100000 D8343
K1000 D8345
K50000 D8346
→
Initial pulse
Sets the creep speed.
1,000(Hz) D8345
FNC 12
MOV
→
*1
*1
Sets the zero return speed.
50,000(Hz) D8347,D8346
FNC 12
DMOV
→
Sets the acceleration time.
100(ms) D8348
FNC 12
MOV
K100
K100
D8348
D8349
→
Sets the deceleration time.
100(ms) D8349
*1
FNC 12
MOV
→
X021
M5
Resets the "zero return
completion" flag.
RST
RST
RST
SET
M10
M12
M13
S0
Zero
return
Operation
stopped
Resets the "forward rotation
positioning completion" flag.
Resets the "reverse rotation
positioning completion" flag.
Enters the zero return state
(S0).
X022
M5
Resets the "forward rotation
positioning completion" flag.
RST
RST
SET
M12
M13
S10
JOG(+) Operation
stopped
*2
Resets the "reverse rotation
positioning completion" flag.
Enters the JOG(+) state
(S10).
X023
M5
Resets the "forward rotation
positioning completion" flag.
RST
RST
SET
M12
M13
S11
JOG(-) Operation
*2
stopped
Resets the "reverse rotation
positioning completion" flag.
Enters the JOG(-) state
(S11).
X024
M5
M10
RST
RST
SET
M12
M13
S12
Resets the "forward rotation
positioning completion" flag.
Positioning Operation "Zero return
in forward stopped completion" flag
rotation
Resets the "reverse rotation
positioning completion" flag.
direction
Enters the forward rotation
positioning state (S12).
*1. If the initial values (maximum speed, acceleration/deceleration time, zero return speed, creep speed)
can be used, it is not necessary to create the program.
→ For the related devices, refer to Section 4.1 to Section 4.4.
*2. The maximum transfer distance for each jogging operation is ±999,999 pulses (pulse output range of
FNC158 (DRVI) instruction). To move the workpiece further, execute the JOG command again.
B - 160
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.3 Programs for Forward/Reverse Rotation (Step Ladder (STL) Program)
A
B
X025
M5
M10
Resets the "forward rotation
positioning completion" flag.
RST
RST
SET
M12
M13
S13
Positioning Operation "Zero return
in reverse
rotation
direction
stopped
completion" flag
Resets the "reverse rotation
positioning completion" flag.
Enters the reverse rotation
positioning state (S13).
STL
S0
Zero return
Apx.
X030*3
M50
Zero return instruction with
DOG search function
(CLEAR signal: Y020)
FNC 150
DSZR
X010
X004
Y000
Y004
Waiting for
1 scan time
Stop
command
Near-
point
signal
Zero-
phase
Pulse Rotation
output direction
signal destination signal
number
M8029
"Zero return completion" flag
SET
RST
M10
S0
"Execution completion" flag
M50
M8340
End of zero return
(Self-reset)
Y000
Waiting for
Outputting 1 scan time
*4
M8000
M50
S10
Waiting for 1 scan time
JOG(+)
RUN monitor
STL
Performs the jogging
X030*3
Stop
X022
M51
operation in the "+" direction
using the drive to Increment
instruction.(Y004=ON)
FNC 158
DDRVI
K999999 K30000 Y000
Y004
Waiting
for 1 scan command
time
JOG(+)
Number of output Output
pulses (maximum pulse
Pulse
output
Rotation
direction
value in "+" frequency destination signal
direction)
number
M8340
M51
Ends the JOG(+) operation.
(Self-reset)
RST
S10
Y000 Waiting for 1 scan time
Outputting
*4
M8000
Waiting for 1 scan time
JOG(-)
M51
S11
RUN monitor
STL
X030*3
Stop
Performs the jogging
X23
M52
FNC 158
DDRVI
operation in the "-" direction
using the drive to Increment
instruction.(Y004=OFF)
K-999999 K30000 Y000
Y004
Waiting for
1 scan time command
JOG(-)
Number of Output
output pulses pulse
Pulse
output
Rotation
direction
(maximum value frequency destination signal
in "-" direction)
number
M8340
Y000
M52
Ends the JOG(-) operation.
(Self-reset)
RST
S11
M52
Waiting for
Outputting 1 scan time
*4
M8000
Waiting for 1 scan time
RUN monitor
*3.
*4.
To stop the positioning operation, be sure to insert the stop contact before the positioning instruction so that STL
instruction cannot be turned off (reset) until the "pulse output monitor" flag (M8340 (for Y000)) is turned off.
To prevent simultaneous activation of positioning instructions, the instruction activation timing should be delayed by 1
scan time.
B - 161
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.3 Programs for Forward/Reverse Rotation (Step Ladder (STL) Program)
STL
S12
Positioning in forward rotation
direction
X030*5
M53
FNC 159
DDRVA
Moves to absolute position
500000 using the drive to
Absolute instruction.
(Y004=ON)
K500000 K100000 Y000
Y004
Stop
command
Waiting for
1 scan time
Designation Output
Pulse
output
Rotation
direction
of absolute
position
pulse
frequency destination signal
number
M8029
"Forward rotation positioning
completion" flag
SET
RST
M12
S12
"Execution completion" flag
Ends the positioning
operation in the forward
rotation direction.
(Self-reset)
M8340
M53
Waiting for 1 scan time
Y000
Outputting
*6
M8000
Waiting for 1 scan time
M53
RUN monitor
STL
S13
Positioning in reverse rotation
direction
X030*5
M54
FNC 159
DDRVA
Moves to absolute position
100 using the drive to
Absolute instruction.
(Y004=OFF)
K100 K100000 Y000
Y004
Stop
command
Waiting for
1 scan
time
Designation Output
Pulse
output
Rotation
direction
of absolute
position
pulse
frequency destination signal
number
M8029
"Reverse rotation positioning
completion" flag
SET
RST
M13
S13
"Execution completion" flag
Ends the positioning
operation in the reverse
rotation direction.
(Self-reset)
M8340
M54
Waiting for 1 scan time
Y000
Outputting
*6
M8000
M54
RET
END
Waiting for 1 scan time
RUN monitor
*5. To stop the positioning operation, be sure to insert the stop contact before the positioning instruction
so that the STL instruction cannot be turned off (reset) until the "pulse output monitor" flag (M8340 (for
Y000)) is turned off.
*6. To prevent simultaneous activation of positioning instructions, the instruction activation timing should
be delayed by 1 scan time.
B - 162
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.4 Positioning Using Batch Setting Method
A
B
12.4 Positioning Using Batch Setting Method
Positioning operation will be performed using the absolute positioning method as shown in the following chart:
→ For details on input/output assignment, refer to Section 12.1
500,000
Output pulse frequency:
100,000 Hz
100
Origin
Apx.
Acceleration/deceleration time:
100 ms
12.4.1 Setting Using GX Developer
This section describes how to set the positioning parameters using GX Developer Ver.8.23Z.
1
On the project tree displayed on the left side of the screen, double-click on
"Parameter" and then "PLC parameter".
If the project tree is not displayed on the screen, click on "View" in the menu bar, and then click on "Project Data
List".
2
Click on "Memory Capacity", and then enter a check in the "Positioning
Instruction settings" check box.
*1
Enter a check.
*1. 9,000 steps are needed to set the positioning data. If there is not enough capacity for programming,
set the "memory capacity" to 16,000 steps.
B - 163
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.4 Positioning Using Batch Setting Method
3
Click on the "Positioning" tab, and then set Y000 (pulse output destination)
as follows.
Before clicking on the "Positioning" tab, click on the "Memory Capacity" tab, and then enter a check in the
"Positioning" check box. After entering a check, positioning data can be set.
After entering a check, positioning data can be set. Use the FX3U/FX3UC PLC of Ver.2.20 or later or FX3G PLC
to use "Positioning".
Setting item
Setting value
Bias speed (Hz)
500
Maximum speed (Hz)
Creep speed (Hz)
100,000
1000
50,000
100
Zero return speed (Hz)
Acceleration time (ms)
Deceleration time (ms)
100
*1
X000
Interrupt input for DVIT instruction
*1. Only available for FX3U and FX3UC PLCs.
4
Click on the "Individual setting" button. The "Individual setting" setting
window will appear. In this window, click on the "Y000" tab to display the
positioning table for Y000 (pulse output destination). Set the data in the
positioning table as follows:
Setting item
Rotation direction signal
First device
Setting value
Y004
R0
Positioning type
DDRVI
(drive to increment)
No. 1
Number of pulses (PLS)
999,999
Frequency (Hz)
30,000
DDRVI
(drive to increment)
Positioning type
No. 2
No. 3
No. 4
Number of pulses (PLS)
Frequency (Hz)
-999,999
30,000
DDRVA
(drive to absolute)
Positioning type
Number of pulses (PLS)
Frequency (Hz)
500,000
100,000
DDRVA
(drive to absolute)
Positioning type
Number of pulses (PLS)
Frequency (Hz)
100
100,000
B - 164
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.4 Positioning Using Batch Setting Method
A
B
5
6
Create a program.
On the bar, click on "Online" and then "Write to PLC". The "Write to PLC"
window will appear.
*1
Apx.
*2. For Ver. 8.13P to 8.24A of GX Developer, the PLC type is FX3UC.
7
Click the "Param+Prog" buttons, and then click the "Execute" button.
The parameters and the created program will be transferred to the PLC.
To enable the transferred parameters, stop the PLC, and then restart it.
12.4.2 Operation Program
An example of a relay ladder program is shown below:
Stops outputting Y000 pulses.
(Immediate stop)
X020
M8349
M10
Refer to Subsection 4.7.2.
Immediate stop
X014
Resets the "origin return
completion" flag.
RST
RST
RST
Servo ready
Resets the "forward rotation
positioning completion" flag.
M12
Resets the "reversed rotation
positioning completion" flag.
M13
X026
Forward rotation limit(Y000)
Reverse rotation limit(Y000)
M8343
M8344
Forward rotation limit
X027
Reverse rotation limit
M8000
Enables the origin return
operation with CLEAR signal
outputting function. (CLEAR
signal: Y020)
FNC 12
MOVP
H0020 D8464
RUN monitor
M8464
M8341
M8342
M8000
Performs origin return in the
forward rotation direction.
RUN monitor
B - 165
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.4 Positioning Using Batch Setting Method
Resets the "origin
X021
M8348
M101
M102
RST
RST
RST
M10
M12
return completion"
flag.
Origin Positioning Normal Abnormal
return being
end of end of
Resets the "forward
rotation positioning
completion" flag.
performed origin origin
return return
M100
Resets the "reverse
rotation positioning
completion" flag.
M13
Origin return
being performed
Origin return is
being performed.
M100
Y004
Origin return
instruction with
DOG search
function
(CLEAR signal:
Y020)
X030
FNC 150
DSZR
X010
X004
Y000
Stop
command
Near-point Zero-point Pulse
Rotation
direction
signal
signal
output
destination signal
number
M8029
"Origin return
SET
M10
completion" flag
"Execution
completion" flag
Normal end of
origin return
M101
M102
M8329
Abnormal end of
origin return
Abnormal
end
Resets the "forward
rotation positioning
completion" flag.
X022 M8348
M104
RST
RST
M12
M13
M103
K1
JOG Positioning
(+) being
performed
Completes
the JOG(+)
operation.
Resets the "reverse
rotation positioning
completion" flag.
(Y000)
M103
JOG(+) operation
is being performed.
JOG(+) operation is
being performed.
X030
Executes No. 1 of
the positioning
table of Y000
(pulse output
destination).
FNC 152
DTBL
Y000
Stop
command
Pulse
output
destination
number
Table
number
X022
Completes the
JOG(+) operation.
M104
JOG(+)
M8329
Abnormal
end
Resets the "forward
rotation positioning
completion" flag.
X023 M8348
M106
RST
RST
M12
M13
M105
K2
JOG Positioning
(-) being
performed
Completes
the JOG(-)
operation.
Resets the "reverse
rotation positioning
completion" flag.
(Y000)
JOG(-) operation
M105
is being
performed.
JOG(-) operation is
being performed.
Executes No. 2 of
the positioning
table of Y000
(pulse output
destination).
X030
FNC 152
DTBL
Y000
Stop
command
Pulse
output
destination
number
Table
number
X023
Completes the
JOG(-) operation.
M106
JOG(-)
M8329
Abnormal
end
B - 166
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.4 Positioning Using Batch Setting Method
A
B
"Forward rotation
positioning
X024 M8348
M10
M108
M109
RST
RST
M12
M13
completion" flag
Position- Position- "Zero
Normal
end of
Abnormal
end of
ing in ing return
forward operation compl-
rotation being etion"
"Reverse rotation
positioning
completion" flag
positioning positioning
in forward in forward
direction performed flag
rotation
direction
rotation
direction
Positioning
M107
operation being
performed in
forward rotation
direction
M107
Positioning operation being
performed in forward rotation
direction
X030
FNC 152
DTBL
Y000
Pulse
output number
destination
number
K3
Executes No. 3 of
the positioning table
of Y000 (pulse
Apx.
Stop
command
Table
output destination).
"Forward rotation
positioning
M8029
SET
M12
completion" flag
"Execution
completion"
flag
"Forward rotation
positioning normal
end" flag
M108
M8329
"Forward rotation
positioning
abnormal end" flag
M109
Abnormal end
"Forward rotation
positioning
X025 M8348
M10
M111
M112
RST
RST
M12
M13
completion" flag
Position- Position- "Zero
Normal
end of
Abnormal
end of
ing in ing return
"Reverse rotation
positioning
reverse operation compl- positioning positioning
rotation being
etion"
in reverse in reverse
rotation
direction
completion" flag
direction performed flag
rotation
direction
Positioning
(Y000)
operation being
performed in
reverse rotation
direction
M110
M110
Positioning operation being
performed in reverse
rotation direction
X030
FNC 152
DTBL
Y000
Pulse
output number
destination
number
K4
Executes No. 4 of
the positioning table
of Y000 (pulse
Stop
command
Table
output destination).
"Reverse rotation
positioning
M8029
SET
M13
completion" flag
"Execution
completion"
flag
"Reverse rotation
positioning normal
end" flag
M111
M112
M8329
"Reverse rotation
positioning
abnormal end" flag
Abnormal end
END
B - 167
12 Examples of Programs
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
12.5 Program for Reading Current ABS Value Using ABS Instruction
12.5 Program for Reading Current ABS Value Using ABS Instruction
1) Program for storing ABS data in current value registers specified by a positioning instruction for Y000
(pulse output destination)
S•
D
1•
D
2•
M8000
FNC155
DABS
Reads out the ABS data to the current value registers
D8341 and D8340.
X031
Y021
D8340
RUN
monitor
ABS(bit0) Servo-ON
signal
K50
M1
T0
Read time limit (5 sec)
ABS data reading completed
T0
M2
M 1
ABS data read error
Read time error detected
M8029
SET
"Execution
completion" flag
ABS data reading is complete.
2) Program for storing ABS data in the current value registers of the FX2N-1PG(-E) or FX2N-10PG
S
•
D
1•
D2•
M8000
FNC155
DABS
Reads out the ABS data to D101 and D100.
Read time limit (5 sec)
X031
Y021
D100
RUN
monitor
ABS(bit0) Servo-ON
signal
K50
M1
T0
ABS data reading completed
T0
M2
M 1
ABS data read error
Read time error detected
M8029
SET
"Execution
completion" flag
ABS data reading is complete.
M1
Writes data in current value registers #27 and #26 of the
FX2N-1PG. *1
FNC12
D100
U
ꢁ\G26
DMOV
ABS data
reading is
Block No.
BFM#26(#27)
ꢁ
completed.
M1
FNC12
DMOV
Writes data (data converted into pulse data) to the
D100
Uꢁ\G39
current value registers #40 and #39 of the FX2N-10PG.*2
ABS data
reading is
completed.
Block No.
BFM#39(#40)
ꢁ
Caution:
*1. The ABS data will be read out as a pulse converted value. For this reason, be sure to specify "motor
system" when setting parameters (BFM #3) for the FX2N-1PG(-E).
*2. When writing the ABS data to the FX2N-10PG, be sure to use the current value registers (BFM #40,
BFM #39) to store the converted pulse data.
B - 168
13 Troubleshooting
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
13.1 LED Indicator Lamp Check
A
B
13. Troubleshooting
13.1 LED Indicator Lamp Check
If an error occurs, check the ON/OFF status of the LED indicator lamps on the PLC to assess the general
meaning of the error. This section does not describe all the LED indicator lamps of the main unit. For details
on the LED indicator lamps, refer to the following PLC manuals.
→ Refer to the FX3G Hardware Edition.
Apx.
→ Refer to the FX3U Hardware Edition.
→ Refer to the FX3UC Hardware Edition.
FX3U PLC
FX3UC (D, DSS) PLC
FX3UC-32MT-LT (-2) PLC
FX3G PLC
13.1.1 POWER Indicator Lamp (Statuses: ON, flashing, OFF) [FX3G/FX3U/FX3UC]
Lamp
status
Status of PLC
Troubleshooting
The power is being supplied properly.
The specified voltage is properly
supplied to the power supply terminal.
ON
The PLC may be at one of the following
statuses:
• Check the power supply voltage.
•
The specified voltage/current is not
supplied to the power supply
terminal.
• Excluding the power cable, disconnect all other cables, and
then turn the power ON again. Check the lamp status. If the
lamp flashes again, please contact the nearest Mitsubishi
Electric distributor office .
Flashing
•
•
An external line is not properly
connected.
The PLC has a problem.
B - 169
13 Troubleshooting
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
13.1 LED Indicator Lamp Check
Lamp
Status of PLC
status
Troubleshooting
The PLC may be at one of the following
statuses:
• The power is off.
• The specified voltage is not
supplied to the power supply
terminal.
If the power is on, check the power supply unit and the power supply
line.
If the power is properly supplied, please contact the nearest
Mitsubishi Electric distributor office.
OFF
• The power cable is disconnected.
B - 170
13 Troubleshooting
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
13.1 LED Indicator Lamp Check
A
B
13.1.2 RUN Indicator Lamp (Statuses: ON, OFF) [FX3G/FX3U/FX3UC]
Lamp
status
Status of PLC
Troubleshooting
The sequence program is being
executed.
ON
The RUN indicator lamp indicates the operation status of the PLC.
Note that the RUN indicator lamp will go out depending on the status
of the ERROR indicator lamp (refer to Subsection 13.1.4).
Execution of the sequence program is
stopped.
OFF
13.1.3 BATT Indicator Lamp (Statuses: ON, OFF) [FX3U/FX3UC]
Lamp
status
Apx.
Status of PLC
Troubleshooting
ON
The voltage of the battery is too low.
Immediately replace the battery (refer to the manual of the PLC).
The PLC has no problems.
The battery supplies enough voltage as
specified by D8006.
OFF
13.1.4 ALM Indicator Lamp (Statuses: ON, OFF) [FX3G]
This LED is valid when the optional battery is installed and the battery mode is selected using a parameter.
Lamp
status
Status of PLC
Troubleshooting
Immediately replace the battery (refer to the manual of the PLC).
The PLC has no problems.
ON
The voltage of the battery is too low.
The battery supplies enough voltage as
specified by D8006.
OFF
13.1.5 ERROR indicator lamp (Statuses: ON, flashing, OFF) [FX3G/FX3U/FX3UC]
Lamp
status
Status of PLC
Troubleshooting
1) Stop the PLC, and then turn the power ON again. If the
ERROR (ERR) indicator lamp goes out, check to see if a
watchdog timer error has been detected, and take one of the
following measures.
-
Review the program.
The maximum value of the scanning time (D8012) should
not be larger than the set value of the watchdog timer
(D8000).
-
-
-
The interrupt input and the pulse catch input should not be
turned on and off too frequently during 1 scan time.
The frequency of the pulse input to the high-speed counter
should not exceed the specified range (duty:50%)
Add several WDT instructions.
Set several WDT instructions in the program so that the
watchdog timer can be reset several times during 1 scan
time.
Change the set value of the watchdog timer.
Using the program, change the set value of the watchdog
timer (D8000) so that the set value of the watchdog timer
(D8000) can be larger than the maximum value of the
scanning time (D8012).
A watchdog timer error may have
been detected, or the hardware of the
PLC may be damaged.
ON
-
2) Remove the PLC, and put it on a workbench. Supply another
source of power to the PLC.
If the ERROR (ERR) indicator lamp does not light, the cause
of the problem may be noise. In this case, take the following
measures.
-
Check the grounding line, and change the wiring route and
the installation place.
-
Adopt a noise filter for the power supply line.
3) If measures 1) and 2) do not turn the ERROR indicator lamp
OFF, please contact the nearest Mitsubishi Electric distributor
office.
B - 171
13 Troubleshooting
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
13.1 LED Indicator Lamp Check
Lamp
Status of PLC
status
Troubleshooting
The PLC has one of the following
errors:
Diagnose the PLC (PC), or check the programs using the
programming tool.
For countermeasures, refer to the following manual of the applied
PLC.
• Parameter error
• Syntax error
• Circuit error
Flashing
OFF
→ Programming manual
If an operation error is detected on the PLC, diagnose the PLC
Errors that can stop the PLC are not (PC), or check the programs using the programming tool. There
detected.
is a good possibility that an "I/O configuration error", "parallel link/
communication error", or "operation error" has been detected.
B - 172
13 Troubleshooting
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
13.1 LED Indicator Lamp Check
A
B
13.1.6 Pulse Output Destination Device and Rotation Direction Output Indicator Lamp
1. If transistor outputs from the main unit are used for positioning
LED status during
execution of
Signal
Description
positioning
instruction
Turned on and off at
high speed
The pulse outputting operation is controlled by the positioning instruction.
"Pulse output
destination
device" (pulse
train) signal
The PLC may exhibit the following status:
1) The operation of the positioning instruction is completed.
2) The positioning instruction turns ON, but an operation error is detected.
The instruction, therefore, is not being executed. To check the error,
refer to the following section:
Apx.
OFF
ON
→ Refer to Subsection 13.2.1 "Error code check method".
Operation is being performed in the forward rotation direction.
The PLC may exhibit the following status:
1) The positioning instruction turns ON, and operation is being performed
in the reverse rotation direction.
2) The positioning instruction turns ON, but an operation error is detected.
The instruction, therefore, is not being executed. To check the error,
refer to the following section:
"Rotation
direction output"
(direction) signal
OFF
→ Refer to Subsection 13.2.1 "Error Code Check Method".
B - 173
13 Troubleshooting
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
13.1 LED Indicator Lamp Check
2. If the high-speed output special adapter (FX3U-2HSY-ADP) is used for positioning
LED status during
Status of pulse
execution of
output method
setting switch
Signal
Description
positioning
instruction
Turned on and off The pulse outputting operation is controlled by the
at high speed
positioning instruction.
The PLC may exhibit the following status:
1) The operation of the positioning instruction is
completed.
2) An operation error occurred during positioning.
The instruction, therefore, is not being executed.
To check the error, refer to the following section:
→ Refer to Subsection 13.2.1 "Error Code
Check Method".
"Pulse output
destination device"
(pulse train)
OFF
PLS•DIR side
ON
Forward operation is in execution.
The PLC may exhibit the following status:
1) The positioning instruction turns ON, and operation
is being performed in the reverse rotation direction.
2) An operation error occurred during positioning
instruction. The instruction, therefore, is not being
executed.
"Rotation direction
output" (direction)
OFF
To check the error, refer to the following section:
→ Refer to Subsection 13.2.1 "Error Code
Check Method".
Turned on and off Forward operation is being executed for a positioning
at high speed
instruction. Reverse pulse train is OFF.
The PLC may exhibit the following status:
1) The positioning instruction turns ON, and operation
is being performed in the reverse rotation direction.
2) An operation error occurred during positioning .
The instruction, therefore, is not being executed.
To check the error, refer to the following section:
→ Refer to Subsection 13.2.1 "Error Code
Check Method".
"Pulse output
destination device"
(Forward pulse train)
OFF
FP/RP side
Turned on and off Reverse operation is being executed for a positioning
at high speed
instruction. Forward pulse train is OFF.
The PLC may exhibit the following status:
1) The positioning instruction turns ON, and operation
is being performed in the forward rotation direction.
2) An operation error occurred during positioning. The
instruction, the4refore, is not being executed.
To check the error, refer to the following section:
→ Refer to Subsection 13.2.1 "Error Code
Check Method".
"Rotation direction
output" (Reverse
pulse train)
OFF
B - 174
13 Troubleshooting
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
13.2 Error Check
A
B
13.2 Error Check
13.2.1 Error Code Check Method
This section describes how to check the error codes using GX Developer.
If the display module is being used, use the "error check" function of the display module to check the error codes.
For details on the operation of the display module, refer to the following manuals:
→ FX3G Hardware Edition.
→ FX3U Hardware Edition.
→ FX3UC Hardware Edition.
Apx.
1
2
Connect a personal computer to the PLC.
Diagnose the PLC.
On the tool menu bar, click on "Diagnostics", and then "PLC diagnostics" to diagnose the cause of the PLC
error.
3
Check the diagnosis result.
The following window will appear. Check the details of the error shown on the window.
<Example of error display screen>
Display of
conditions of
LEDs on FX
PLC
The help function of
GX Developer opens,
and you can check
the details of the
error code.
The PLC error
is displayed.
<Example of screen displayed
in normal state>
B - 175
13 Troubleshooting
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
13.2 Error Check
13.2.2 Error Codes
This section describes the error codes related to the positioning instructions. For details on the error codes,
refer to the following manual.
→ Refer to the programming manual.
Operation
after
detecting
error
Error
code
Description of error
Troubleshooting
Operation error [M8067 (D8067)]
0000
No error detected
The device specified by the operand of the
applied instruction is a wrong device.
This error occurs during operation. Check the program or
the operand of the applied instruction.
Even if no syntax error or circuit error is detected, an
operation error may occur for the following reason:
Example:
T500Z is not an error. However, if Z = 100, the result of
operation will be T600. This means that the device
number is out of the specified range, and an operation
error will be detected.
6705
The device number or the data specified by
the operand of the applied instruction is out of
the specified range.
6706
6760
Sum error of ABS data sent from servo
amplifier
Check the servo amplifier for disconnection. Also check
the set data.
Operation
will be
continued.
1) The input (X) specified by the DSZR,
DVIT, or ZRN instruction is already being
used for another instruction.
1) Check that the input (X) specified by the DSZR, DVIT,
or ZRN instruction is not being used for the following
items:
2) The interruption signal device number
specified by the DVIT instruction is
outside the setting range.
-
-
-
-
Input interruption (including delay function)
High-speed counter (C235 to C255)
Pulse catch (M8170 to M8177)
SPD instruction
6763
6764
2) Check the data set in D8336
(interruption signal designation device for DVIT
instruction).
The pulse output number is already being
used for a positioning instruction or pulse
output instruction (PLSY, PWM,etc.).
Check that the output specified as the pulse output
destination is not being activated by another positioning
instruction.
B - 176
13 Troubleshooting
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
13.3 If the Servo Motor or the Stepping Motor Does Not Operate
A
B
13.3 If the Servo Motor or the Stepping Motor Does Not Operate
If the servo motor or the stepping motor does not operate, check the following items.
1) Check the wiring condition.
→ For output specifications, refer to Section 2.5.
→ To connect the MELSERVO Series, refer to the examples of connection shown in the Appendix.
→ For details on the servo amplifier (drive unit), refer to the manual of your unit.
2) Execute the positioning instruction, and then check the statuses of the following LED indicator lamps.
→ For details on lamp statuses, refer to Subsection 13.1.5.
- LED indicator lamp of the output specified as the pulse output destination
- LED indicator lamp of the output specified as the rotation direction output device
Apx.
3) Verify that the same pulse output method is being applied for both the PLC and the servo amplifier (drive
unit).
→ For details on the pulse output method, refer to Subsection 4.6.1.
→ For details on high-speed output special adapter setting method,refer to Subsection 4.5.2.
4) Check that the pulse output stop command flag is off.
→ For details on the pulse output stop command flag, refer to Subsection 4.3.2.
The following table shows the pulse output stop command flag of each pulse output destination device
(Y000, Y001, Y002, Y003).
Pulse output destination Pulse output stop
Operation
device
Y000
Y001
Y002
Y003
command flag
M8349
During pulse outputting operation, if the pulse output stop
command flag of a corresponding pulse output destination
device is turned on, the pulse outputting operation will be
immediately stopped.
M8359
M8369
M8379
5) Check that the limit switch (forward or reverse rotation limit switch) is not activated.
→ For details on the normal and reverse rotation limits, refer to Subsection 4.3.1.
The following table shows the forward and reverse limit relays of each pulse output destination device
(Y000, Y001, Y002, Y003).
Corresponding instruction and stop
Pulse output
Forward limit Reverse limit
DSZR, DVIT, ZRN,
PLSV(M8338 = ON), DRVI,
and DRVA instructions
destination
device
PLSV instruction
(M8338 = OFF)
relay
relay
Y000
Y001
Y002
Y003
M8343
M8353
M8363
M8373
M8344
M8354
M8364
M8374
If the corresponding rotation
limit relay is turned on, the
pulse output (operation) will
immediately stop.
If the corresponding rotation
limit relay is turned on, the
speed will decelerate, and the
operation will stop.
6) Check the operation timing of the positioning instruction.
If the "pulse output monitor" (BUSY/READY) flag is on, and if a positioning instruction (excluding the ABS
instruction) or pulse output instruction (PLSR, PLSY) uses the same pulse output destination device, the
instruction cannot be executed.
If the "pulse output monitor" (BUSY/READY) flag is still on after the instruction activation contact is turned
off, do not execute a positioning instruction (including PLSR and PLSY instructions) that uses the same
output number.
Before activating such an instruction, check that the "pulse output monitor" (BUSY/READY) flag is off,
and then wait until at least 1 scan time is completed.
Pulse output destination device
Pulse output monitor flag
Y000
Y001
Y002
Y003
M8340
M8350
M8360
M8370
B - 177
13 Troubleshooting
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
13.4 If Operation Is Stopped at a Wrong Position
13.4 If Operation Is Stopped at a Wrong Position
If operation is stopped at a wrong position, check the following items.
1) Check whether the electronic gear of the servo amplifier (drive unit) is set properly.
→ For the electronic gear setting method of the MELSERVO Series, refer to Subsection 4.6.2.
2) Check whether the origin is set properly.
• Properly set the DOG so that the near-point signal (DOG) can be kept ON until the speed is reduced to
the creep speed. The zero return instruction will start speed reduction at the front end of the DOG, and
will stop the operation at the rear end of the DOG or at detection of the first zero-phase signal after
passing the rear end of the DOG. After that, the current value register will be cleared (reset to "0"). If
the speed is not reduced to the creep speed before detecting the rear end of the DOG, the operation
may not be stopped at the specified position.
• The creep speed should be slow enough. The zero return instruction will not reduce the speed before
stopping. For this reason, if the creep speed is not slow enough, the operation may not be stopped at
the specified position due to inertia.
• Devices for the near-point signal (DOG)
- DSZR instruction
If an input (X000 to X017)*1 of the main unit is specified for the near-point signal (DOG), the rear end
of the near-point signal (DOG) will be monitored (detected) at 1-ms intervals (interruption). Under the
following condition, however, monitoring (detection) of the near-point signal (DOG) rear end may be
affected by the input time constant or the scan time of the sequence program, and the operation may
not be stopped at the specified position.
a) An input number of X020 or below (or other device (auxiliary relay, etc.)) is specified.
*1.When using an FX3U-16Mꢁ, FX3UC-16Mꢁ, specify an input in the range of X000 to X007.
X000 to X007 for FX3G PLC (main unit).
- ZRN instruction
If an input (X000 to X007) of the main unit is specified for the near-point input signal, the PLC
interruption function will be used to stop the operation. Under the following condition, however,
operation may be affected by the scan time of the sequence program, and the operation may not be
stopped at the specified position.
a) An input number of X010 or below (or other device (auxiliary relay, etc.)) is specified. If an input
relay X010 or below is specified for the near-point signal, the input filter (10 ms) will apply.
• If the DSZR instruction is used:
Since the zero-phase signal of the servo motor is used, adjust the relation between the rear end of the
DOG and the zero-phase signal as shown in the following figure. If fine adjustment of the origin
position is needed, adjust the position of the near-point signal (DOG).
Rear end
DOG
Zero-phase signal
3) If reciprocating operation (operation in the forward rotation direction and then reverse rotation direction) is
not stopped at the specified position: The built-in positioning function cannot correct the mechanical
backlash (clearance, play) during positioning operation. If it is necessary to correct the backlash,
preliminarily set the number of output pulses considering the backlash that may be caused when
changing the transfer direction.
Table
Feed screw
Backlash
(clearance, play)
B - 178
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
A
B
FX3G/FX3U/FX3UC Series Programmable
Controllers
Apx.
User's Manual [Positioning Control Edition]
Appendix: Example Connection
Foreword
To use the positioning function of the MELSEC-F FX3G/FX3U/FX3UC Series PLC described in this manual, the
PLC should be connected to a servo amplifier drive unit. The Appendix, therefore, describes how to connect
the PLC to a servo amplifier drive unit and should be read and understood before attempting to install or use
the unit.
Store this manual in a safe place so that you can take it out and read it whenever necessary. Always forward
it to the end user.
This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent
licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property
rights which may occur as a result of using the contents noted in this manual.
© 2005 MITSUBISHI ELECTRIC CORPORATION
Apx. - 1
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
Description of Manual (Example of Connection)
In this manual, the following formats are used for describing the examples of connection:
Shows the title of the chapter
Indexes the division titles.
Shows the title of the manual and the title
of the division.
and the title of the section.
This area shows the title of the chapter
and the title of the section for the
current page.
The right side of each page indexes the title
of the division for the current page.
This area shows the title of the manual
and the title of the division for the current
page.
1st line: Shows the title of the manual.
2nd line: Shows the title of the division.
Shows the reference.
This area shows the reference
document (the reference
document is shown next to " ").
If the reference is in
"Appendix: Examples of
Connection", the chapter, section,
or item number only will be
shown next to " " .
The above is different from the actual page, as it is provided for explanation only.
Apx. - 2
Appendix 1: MELSERVO-J3 Series
Appendix 1-1 Main Unit (Transistor Output)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
A
B
Appendix 1. MELSERVO-J3 Series
Appendix 1-1 Main Unit (Transistor Output)
To assign the inputs/outputs, refer to the following section.
→ Refer to Section 12.1 of "B. Built-in Positioning Function".
Appedix 1-1-1 Sink Input and Sink Output
1. FX3U/FX3G PLC
100 to 240V AC
Apx.
FX3U-32MT/ES
L
MR-J3
ꢁA
N
Series servo
amplifier
CN1
24V DC
Class-D
DICOM
20
grounding*1
DOCOM
46
CN1
S/S
0V
OPC 12
DICOM
21
Photo-
coupler
Zero speed*4
23 ZSP
24 INP
25 TLC
48 ALM
24V
X000
Zero Point
Positioning completed(INP)
Torque being controlled*4
Servo error(ALM)
signal(PG0)
LG 34
OP 33
X004
X010
X014
Servo ready
(RD)
CN1
15 SON
19 RES
DOG*2
Servo ON*4
Reset
RD 49
42 EMG
Emergency stop
X017
Forward rotation limit 2*3
Reverse rotation limit 2*3
COM1
43 LSP
44 LSN
Pulse train
Direction
DOCOM
46
DOCOM
47
Y000
PP 10
*4
Connected to the
FX3U if the ABS
instruction (FNC 155)
is used.
COM2
NP 35
Y004
Y007
CN1
25 ABST
22 ABSB0
23 ABSB1
FX2N-16EX-ES/UL
FX2N-16EYT
Refer to Appendix
1.3.1-1.
DOCOM
46
FX2N-16EYT
15 SON
17 ABSM
18 ABSR
COM1
Y020
Y027
CLEAR signal
CR 41
Plate
SD
FX2N-16EX-ES/UL
S/S
X020
X021
X022
X023
X024
X025
X026
X027
X030
Immediate stop command
Zero return command
JOG(+)command
Photo-
coupler
JOG(-)command
Forward rotation positioning command
Reverse rotation positioning command
Forward rotation limit (LSF)*3
Reverse rotation limit (LSR)*3
Stop command
X037
Apx. - 3
Appendix 1. MELSERVO-J3 Series
Appendix 1-2 High-Speed Output Special Adapter
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
*1.
*2.
*3.
Be sure to use the class-D grounding method (grounding resistance: 100
Near-point signal (DOG)
Ω
or less).
To ensure safety, use the forward rotation limit switch and the reverse rotation limit switch on both sides: the PLC side and
the servo amplifier side.
Note that the limit switches on the PLC side should be activated slightly earlier than the limit switches on the servo
amplifier side.
Reverse rotation limit 2 Reverse rotation limit 1 Forward rotation limit 1 Forward rotation limit 2
(Servo amplifier side)
(Programmable
controller side)
LSR
(Programmable
controller side)
LSF
(Servo amplifier side)
Servo motor
Reverse rotation
Forward rotation
*4.
To detect absolute positions, connect this line to the PLC.
Apx. - 4
Appendix 1: MELSERVO-J3 Series
Appendix 1-1 Main Unit (Transistor Output)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
A
B
2. FX3UC PLC
MR-J3
ꢁA
Series servo
amplifier
FX3UC-32MT/D
CN1
DICOM
20
24V DC
OPC 12
CN1
DOCOM
DICOM
21
46
Class-D
Photo-
grounding*1
Zero speed*4
23 ZSP
24 INP
25 TLC
48 ALM
coupler
COM
X000
Positioning completed(INP)
Torque being controlled*4
Servo error(ALM)
Zero Point
signal(PG0)
LG 34
OP 33
X004
X010
X014
X017
Apx.
Servo ready
(RD)
CN1
DOG*2
Servo ON*4
Reset
15 SON
19 RES
42 EMG
RD 49
Emergency stop
Forward rotation limit 2*3
Reverse rotation limit 2*3
COM1
COM1
Y000
43 LSP
44 LSN
Pulse train
Direction
DOCOM
46
DOCOM
47
PP 10
*4
Connected to the
FX3UC if the ABS
instruction(FNC
155) is used.
Y004
Y017
NP 35
CN1
25 ABST
22 ABSB0
23 ABSB1
FX2NC-16EYT
FX2NC-16EX
COM1
COM1
Y020
FX2NC-16EX
FX2NC-16EYT
Refer to Appendix
1.3.1-2.
CLEAR signal
DOCOM
46
CR 41
15 SON
17 ABSM
18 ABSR
Plate
SD
Y027
Photo-
coupler
COM
X020
X021
X022
X023
X024
X025
X026
X027
X030
Immediate stop command
Zero return command
JOG(+)command
JOG(-)command
Forward rotation positioning command
Reverse rotation positioning command
Forward rotation limit (LSF)*3
Reverse rotation limit (LSR)*3
Stop command
X037
*1.
*2.
*3.
Be sure to use the class-D grounding method (grounding resistance: 100
Near-point signal (DOG)
Ω
or less).
To ensure safety, use the forward rotation limit switch and the reverse rotation limit switch on both sides: the PLC side and
the servo amplifier side.
Note that the limit switches on the PLC side should be activated slightly earlier than the limit switches on the servo
amplifier side.
Reverse rotation limit 2 Reverse rotation limit 1 Forward rotation limit 1 Forward rotation limit 2
(Servo amplifier side)
(Programmable
controller side)
LSR
(Programmable
controller side)
LSF
(Servo amplifier side)
Servo motor
Reverse rotation
Forward rotation
*4.
To detect absolute positions, connect this line to the PLC.
Apx. - 5
Appendix 1. MELSERVO-J3 Series
Appendix 1-2 High-Speed Output Special Adapter
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
Appendix 1-2 High-Speed Output Special Adapter
To assign the inputs/outputs, refer to the following section.
→ Refer to Section 12.1 of "B. Built-in Positioning Function".
Appedix 1-2-1 Sink Input, Sink Output (Transistor), and Differential Line Driver Output
MR-J3
ꢁA
Series servo
amplifier
20
46
CN1
DICOM
24V DC
DOCOM
OPC 12
FX3U-2HSY-ADP
Pulse train
(Forward rotation
pulse train)*5
Epuivalent to
AM26C31
CN1
21 DICOM
23 ZSP
24 INP
25 TLC
48 ALM
Y0/2+
Y0/2-
Y4/6+
Y4/6-
SGA
PP 10
PG 11
NP 35
NG 36
Zero speed*4
Positioning completed(INP)
Torque being controlled*4
Servo error(ALM)
Direction signal
(Reverse rotation
pulse train)*5
SGA
100V to
240V AC
FX3U-32MR/ES
L
CN1
15 SON
Servo ON*4
Reset
N
19 RES
42 EMG
Class-D
grounding
*1
S/S
0V
Emergency stop
Photo-
coupler
24V
X000
Forward rotation limit 2*3
Reverse rotation limit 2*3
43 LSP
44 LSN
Zero Point
signal(PG0)
LG 34
OP 33
DOCOM
47
*4
X004
X010
X014
X017
Connected to the
FX3UC if the ABS
instruction(FNC
155) is used.
Servo ready
(RD)
DOG*2
DOCOM
46
CN1
RD 49
25 ABST
22 ABSB0
23 ABSB1
FX2N-16EX-ES/UL
FX2N-16EYT
Refer to Appendix
1.3.1-1.
DOCOM
46
FX2N-16EYT
15 SON
17 ABSM
18 ABSR
COM1
Y020
Y027
CLEAR signal
CR 41
Plate
SD
FX2N-16EX-ES/UL
S/S
X020
X021
X022
X023
X024
X025
X026
X027
X030
Immediate stop command
Zero return command
JOG(+)command
Photo-
coupler
JOG(-)command
Forward rotation positioning command
Reverse rotation positioning command
Forward rotation limit (LSF)*3
Reverse rotation limit (LSR)*3
Stop command
X037
*1.
*2.
Be sure to use the class-D grounding method (grounding resistance: 100
Near-point signal (DOG)
Ω
or less).
Apx. - 6
Appendix 1: MELSERVO-J3 Series
Appendix 1-3 Absolute Position Detection (Transistor Output)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
A
B
*3.
To ensure safety, use the forward rotation limit switch and the reverse rotation limit switch on both sides: the PLC side and
the servo amplifier side. Note that the limit switches on the PLC side should be activated slightly earlier than the limit
switches on the servo amplifier side.
Reverse rotation limit 2 Reverse rotation limit 1 Forward rotation limit 1 Forward rotation limit 2
(Servo amplifier side)
(Programmable
controller side)
LSR
(Programmable
controller side)
LSF
(Servo amplifier side)
Servo motor
Reverse rotation
Forward rotation
*4.
*5.
To detect absolute positions, connect this line to the PLC.
Set the pulse output form by pulse output form setting switch.
Apx.
Pulse output method setting switch
FP•RP side
Pulse output method
Forward/reverse pulse train
Pulse train + direction
PLS•DIRside
Appendix 1-3 Absolute Position Detection (Transistor Output)
To assign the inputs/outputs, refer to the following section.
→ Refer to Section 12.1 of "B. Built-in Positioning Function"
Appendix 1-3-1 Sink Input and Sink Output
1. FX3U/FX3G PLC
FX3U-32MT/ES
100V to 240V AC
L
N
Class-D
grounding *1
MR-J3
ꢁA
Series servo
amplifier
S/S
CN1
DOCOM
0V
46
20
Photo-
coupler
DICOM
24V
X000
24V DC
FX2N-16EYT
COM1
Y020
Y021
Y022
Y023
Servo-ON
ABS transfer mode
ABS request
SON 15
ABSM 17
ABSR 18
Y27
FX2N-16EX-ES/UL
S/S
X020
Photo-
coupler
ABS(bit0)
ABS(bit1)
Send data ready
X031
X032
X033
ABSB0
ABSB1 23
22
25
AB T
Plate
SD
X037
*1.
Be sure to use the class-D grounding method (grounding resistance: 100
Ω
or less).
Apx. - 7
Appendix 1. MELSERVO-J3 Series
Appendix 1-2 High-Speed Output Special Adapter
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
2. FX3UC PLC
MR-J3
ꢁA
Series servo
amplifier
FX3UC-32MT/D
CN1
DICOM
20
24V DC
DOCOM
46
Photo-
coupler
Class-D
COM
X000
grounding *1
FX2NC-16EYT
COM1
COM1
Y020
Y021
Y022
Y023
Servo-ON
ABS transfer mode
ABS request
SON 15
ABSM 17
ABSR 18
Y027
FX2NC-16EX
Photo-
coupler
COM
X020
ABS(bit0)
ABS(bit1)
Send data ready
X031
X032
X033
ABSB0 22
ABSB1 23
ABST 25
Plate
SD
X037
*1.
Be sure to use the class-D grounding method (grounding resistance: 100
Ω
or less).
Apx. - 8
Appendix 2. MELSERVO-J2 (-Super) Series
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
Appendix 2-1 Main Unit (Transistor Output)
A
B
Appendix 2. MELSERVO-J2 (-Super) Series
Appendix 2-1 Main Unit (Transistor Output)
To assign the inputs/outputs, refer to the following section.
→ Refer to Section 12.1 of "B. Built-in Positioning Function".
Appendix 2-1-1 Sink Input and Sink Output
1. FX3U/FX3G PLC
100 to
Apx.
240V AC
FX3U-32MT/ES
L
MR-J2(S)
ꢁA
Series servo
amplifier
CN1B
10 SG
VDD
13 COM
TLC
N
*4
3
Class-D
grounding*1
Torque being controlled*5
Servo error(ALM)
Zero speed*5
6
S/S
18 ALM
19 ZSP
Photo-
coupler
0V
24V
X000
Zero Point
CN1A
LG
CN1B
5 SON
14 RES
signal(PG0)
Servo ON*5
Reset
1
X004
X010
X014
OP 14
Servo ready
(RD)
15 EMG
Emergency stop
DOG*2
Forward rotation limit 2*3
Reverse rotation limit 2*3
RD 19
16 LSP
17 LSN
20 SG
X017
*5
Connected to the
FX3U if the ABS
instruction (FNC
155) is used.
COM1
Pulse train
Direction
SG 10
Y000
PP
3
CN1B
4
DO1
19 ZSP
TLC
10 SG
5 SON
COM2
NP
2
FX2N-16EX-ES/UL
FX2N-16EYT
Refer to Appendix
2.3.1-1.
6
Y004
Y007
8
9
ABSM
ABSR
FX2N-16EYT
COM1
Y020
Y027
CLEAR signal
CR
8
Plate
SD
CN1A
COM
9
OPC 11
1NP 18
FX2N-16EX-ES/UL
Positioning
completed(INP)
S/S
X020
X021
X022
X023
X024
X025
X026
X027
X030
Immediate stop command
Zero return command
JOG(+)command
Photo-
coupler
JOG(-)command
Forward rotation positioning command
Reverse rotation positioning command
Forward rotation limit (LSF)*3
Reverse rotation limit (LSR)*3
Stop command
X037
Apx. - 9
Appendix 2. MELSERVO-J2 (-Super) Series
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
Appendix 2-1 Main Unit (Transistor Output)
*1.
*2.
*3.
Be sure to use the class-D grounding method (grounding resistance: 100
Near-point signal (DOG)
Ω
or less).
To ensure safety, use the forward rotation limit switch and the reverse rotation limit switch on both sides: the PLC side and
the servo amplifier side. Note that the limit switches on the PLC side should be activated slightly earlier than the limit
switches on the servo amplifier side.
Reverse rotation limit 2 Reverse rotation limit 1 Forward rotation limit 1 Forward rotation limit 2
(Servo amplifier side)
(Programmable
controller side)
LSR
(Programmable
controller side)
LSF
(Servo amplifier side)
Servo motor
Reverse rotation
Forward rotation
*4.
*5.
For details on the internal power supply of MR-J2 (S) servo amplifier, refer to the following manual.
→ For details, refer to the servo amplifier manual.
To detect absolute positions, connect this line to the PLC.
Apx. - 10
Appendix 2. MELSERVO-J2 (-Super) Series
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
Appendix 2-1 Main Unit (Transistor Output)
A
B
2. FX3UC PLC
FX3UC-32MT/D
24V DC
Photo-
Class-D
MR-J2(S)
ꢁA
grounding *1
coupler
COM
X000
Series servo
amplifier
Zero Point
signal(PG0)
CN1A
LG
CN1B
1
10 SG
13 COM
6
18 ALM
19 ZSP
X004
X010
X014
X017
OP 14
Servo ready
(RD)
Torque being controlled*4
Servo error(ALM)
Zero speed*4
TLC
DOG*2
Apx.
RD 19
CN1B
5 SON
14 RES
Servo ON*4
Reset
COM1
COM1
Y000
Pulse train
Direction
SG 10
15 EMG
Emergency stop
PP
NP
3
2
Forward rotation limit 2*3
Reverse rotation limit 2*3
16 LSP
17 LSN
20 SG
Y004
Y017
*4
Connected to the
FX3UC if ABS the
instruction(FNC
155) is used.
FX2NC-16EYT
FX2NC-16EX
COM1
COM1
Y020
CLEAR signal
CN1B
4
DO1
19 ZSP
TLC
CR
SD
8
Plate
FX2NC-16EX
FX2NC-16EYT
Refer to Appendix
2.3.1-2.
6
Y027
10 SG
5 SON
CN1A
COM
9
OPC 11
INP 18
8
9
ABSM
ABSR
Positioning
Photo-
coupler
completed(INP)
COM
X020
X021
X022
X023
X024
X025
X026
X027
X030
Immediate stop command
Zero return command
JOG(+)command
JOG(-)command
Forward rotation positioning command
Reverse rotation positioning command
Forward rotation limit (LSF)*3
Reverse rotation limit (LSR)*3
Stop command
X037
*1.
*2.
*3.
Be sure to use the class-D grounding method (grounding resistance: 100
Near-point signal (DOG)
Ω
or less).
To ensure safety, use the forward rotation limit switch and the reverse rotation limit switch on both sides: the PLC side and
the servo amplifier side. Note that the limit switches on the PLC side should be activated slightly earlier than the limit
switches on the servo amplifier side.
Reverse rotation limit 2 Reverse rotation limit 1 Forward rotation limit 1 Forward rotation limit 2
(Servo amplifier side)
(Programmable
controller side)
LSR
(Programmable
controller side)
LSF
(Servo amplifier side)
Servo motor
Reverse rotation
Forward rotation
*4.
To detect absolute positions, connect this line to the PLC.
Apx. - 11
Appendix 2. MELSERVO-J2 (-Super) Series
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
Appendix 2-2 High-Speed Output Special Adapter
Appendix 2-2 High-Speed Output Special Adapter
To assign the inputs/outputs, refer to the following section.
→ Refer to Section 12.1 of "B. Built-in Positioning Function".
Appendix 2-2-1 Sink Input, Sink Output (Transistor), and Differential Line Driver Output
MR-J2(S)
ꢁA
FX3U-2HSY-ADP
Pulse train
(Forward rotation
pulse train)*6
Series servo
amplifier
CN1B
10 SG
VDD
13 COM
TLC
CN1A
PP
Epuivalent to
AM26C31
Y0/2+
Y0/2-
Y4/6+
Y4/6-
SGA
3
*4
3
PG 13
NP
NG 12
2
Torque being controlled*5
Servo error(ALM)
Zero speed*5
6
18 ALM
19 ZSP
Direction signal
(Reverse rotation
pulse train)*6
SGA
100V to
240V AC
FX3U-32MR/ES
CN1B
5 SON
14 RES
L
Servo ON*5
Reset
N
Class-D
Emergency stop
15 EMG
grounding*1
S/S
0V
Forward rotation limit 2*3
Reverse rotation limit 2*3
16 LSP
17 LSN
20 SG
24V
X000
Zero Point
signal(PG0)
*5
Photo-
coupler
LG
OP 14
1
Connected to the
PLC if the ABS
instruction (FNC
155) is used.
X004
X010
X014
X017
Servo ready
(RD)
CN1B
DOG*2
SG 10
RD 19
4
DO1
19 ZSP
TLC
FX2N-16EX-ES/UL
FX2N-16EYT
Refer to Appendix
2.3.1-1.
6
10 SG
5 SON
FX2N-16EYT
8
9
ABSM
ABSR
COM1
Y020
Y027
CLEAR signal
CR
SD
8
Plate
CN1A
FX2N-16EX-ES/UL
COM
INP 18
9
S/S
Immediate stop
X020
X021
X022
X023
X024
X025
X026
X027
X030
command
Zero return command
Positioning
completed(INP)
Photo-
coupler
JOG(+)command
JOG(-)command
Forward rotation positioning command
Reverse rotation positioning command
Forward rotation limit (LSF)*3
Reverse rotation limit (LSR)*3
Stop command
X037
*1.
*2.
Be sure to use the class-D grounding method (grounding resistance: 100
Near-point signal (DOG)
Ω
or less).
Apx. - 12
Appendix 2. MELSERVO-J2 (-Super) Series
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
Appendix 2-3 Absolute Position Detection (Transistor Output)
A
B
*3.
To ensure safety, use the forward rotation limit switch and the reverse rotation limit switch on both sides: the PLC side and
the servo amplifier side. Note that the limit switches on the PLC side should be activated slightly earlier than the limit
switches on the servo amplifier side.
Reverse rotation limit 2 Reverse rotation limit 1 Forward rotation limit 1 Forward rotation limit 2
(Servo amplifier side)
(Programmable
controller side)
LSR
(Programmable
controller side)
LSF
(Servo amplifier side)
Servo motor
Reverse rotation
Forward rotation
*4.
For details on the MR-J2(S) servo amplifier, such as the tolerance for the internal power and operation of the servo
amplifier, refer to the following manual.
→ For details, refer to the servo amplifier manual. Apx.
*5.
*6.
To detect absolute positions, connect this line to the PLC.
Set the pulse output method using the pulse output method setting switch.
Pulse output method setting switch
FP•RP side
Pulse output method
Forward/reverse pulse train
Pulse train + direction
PLS•DIR side
Appendix 2-3 Absolute Position Detection (Transistor Output)
To assign the inputs/outputs, refer to the following section.
→ Refer to Section 12.1 of "B. Built-in Positioning"
Appendix 2-3-1 Sink Input and Sink Output
1. FX3U/FX3G PLC
FX3U-32MT/ES
100V to 240V AC
L
N
Class-D
grounding *1
MR-J2(S)
ꢁA
Series servo
amplifier
S/S
CN1B
Photo-
coupler
0V
SG 10
24V
X000
COM 13
VDD
3
*2
FX2N-16EYT
COM1
Y020
Y021
Y022
Y023
Servo-ON
ABS transfer mode
ABS request
SON
ABSM
ABSR
5
8
9
Y027
FX2N-16EX-ES/UL
S/S
X020
Photo-
coupler
ABS(bit0)
ABS(bit1)
Send data ready
X031
X032
X033
DO1
4
ZSP 19
TLC
SD
6
Plate
X037
*1.
*2.
Be sure to use the class-D grounding method (grounding resistance: 100
Ω
or less).
For details on the MR-J2(S) servo amplifier, such as the tolerance for the internal power and operation of the servo
amplifier, refer to the following manual.
→ For details, refer to the servo amplifier manual.
Apx. - 13
Appendix 2. MELSERVO-J2 (-Super) Series
Appendix 2-3 Absolute Position Detection (Transistor Output)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
2. FX3UC PLC
MR-J2(S)
ꢁA
Series servo
amplifier
FX3UC-32MT/D
CN1B
COM 13
24V DC
SG 10
Class-D
Photo-
grounding *1
coupler
COM
X000
FX2NC-16EYT
COM1
COM1
Y020
Servo-ON
Y021
SON
ABSM
ABSR
5
8
9
ABS transfer mode
Y022
ABS request
Y023
Y027
FX2NC-16EX
Photo-
coupler
COM
X020
ABS(bit0)
X031
DO1
4
ABS(bit1)
X032
ZSP 19
Send data ready
X033
TLC
SD
6
Plate
X037
*1.
Be sure to use the class-D grounding method (grounding resistance: 100
Ω
or less).
Apx. - 14
Appendix 3. MELSERVO-H Series
Appendix 3-1 Main Unit (Transistor Output)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
A
B
Appendix 3. MELSERVO-H Series
Appendix 3-1 Main Unit (Transistor Output)
To assign the inputs/outputs, refer to the following section.
→ Refer to Section 12.1 of "B. Built-in Positioning Function".
Appendix 3-1-1 Sink Input and Sink Output
Apx.
FX3UC-32MT/D
24V DC
Class-D
Photo-
coupler
grounding*1
MR-H
Series servo
CN1 amplifier
ꢁA
COM
X000
Zero Point
signal(PG0)
LG 28
CN1
40 SG
20 VIN
23 ZSP
24 PF
25 TLC
48 ALM
X004
X010
X014
X017
OP 33
Servo ready
(RD)
Zero speed*4
DOG*2
Positioning completed(INP)*4
Torque being controlled*4
Servo error(ALM)
RD 49
COM1
COM1
Y000
CN1
12 SON
15 RES
Pulse train
Direction
Servo ON*4
Reset
SG 47
PP0 18
Y004
Y017
NPO 19
46 EMG
Emergency stop
Forward rotation limit 2*3
Reverse rotation limit 2*3
38 LSP
39 LSN
40 SG
FX2NC-16EYT
FX2NC-16EX
COM1
COM1
Y020
CLEAR signal
*4
SG 17
CR
Connected to the
FX3UC if the ABS
instruction(FNC
155) is used.
37
SD 50
CN1
24 PF
23 ZSP
Y027
FX2NC-16EX
FX2NC-16EYT
Refer to Appendix
3.2.1.
25 TLC
16 SG
12 SON
44 D13
45 D14
Photo-
coupler
COM
X020
X021
X022
X023
X024
X025
X026
X027
X030
Immediate stop command
Zero return command
JOG(+)command
JOG(-)command
Forward rotation positioning command
Reverse rotation positioning command
Forward rotation limit (LSF)*3
Reverse rotation limit (LSR)*3
Stop command
X037
Apx. - 15
Appendix 3. MELSERVO-H Series
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
Appendix 3-2 Absolute Position Detection (Transistor Output)
*1.
*2.
*3.
Be sure to use the class-D grounding method (grounding resistance: 100
Near-point signal (DOG)
Ω
or less).
To ensure safety, use the forward rotation limit switch and the reverse rotation limit switch on both sides: the PLC side and
the servo amplifier side. Note that the limit switches on the PLC side should be activated slightly earlier than the limit
switches on the servo amplifier side.
Reverse rotation limit 2 Reverse rotation limit 1 Forward rotation limit 1 Forward rotation limit 2
(Servo amplifier side)
(Programmable
controller side)
LSR
(Programmable
controller side)
LSF
(Servo amplifier side)
Servo motor
Reverse rotation
Forward rotation
*4.
To detect absolute positions, connect this line to the PLC.
Appendix 3-2 Absolute Position Detection (Transistor Output)
To assign the inputs/outputs, refer to the following section.
→ Refer to Section 12.1 of "B. Incorporated Positioning"
Appendix 3-2-1 Sink Input and Sink Output
1. FX3UC PLC
MR-H
ꢁA
Series servo
amplifier
FX3UC-32MT/D
CN1
VIN 20
24V DC
SG 40
Class-D
Photo-
coupler
grounding *1
COM
X000
FX2NC-16EYT
COM1
COM1
Y020
Y021
Y022
Y023
SG 16
SON 12
DI3 44
DI4 45
Servo-ON
ABS transfer mode
ABS request
Y27
FX2NC-16EX
Photo-
coupler
COM
X020
ABS(bit0)
ABS(bit1)
Send data ready
X031
X032
X033
PF 24
ZSP 23
TLC 25
SD 50
X037
*1.
Be sure to use the class-D grounding method (grounding resistance: 100
Ω
or less).
Apx. - 16
Appendix 4. MELSERVO-C Series
Appendix 4-1 Main Unit (Transistor Output)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
A
B
Appendix 4. MELSERVO-C Series
Appendix 4-1 Main Unit (Transistor Output)
To assign the inputs/outputs, refer to the following section.
→ Refer to Section 12.1 of "B. Built-in Positioning Function".
Appendix 4-1-1 Sink Input and Sink Output
Apx.
1. FX3U/FX3G PLC
100 to 240V AC
FX3U-32MT/ES
L
24V DC
N
Class-D
grounding*1
MR-C
Series servo
amplifier
ꢁA
S/S
0V
Photo-
coupler
24V
X000
Zero Point
signal(PG0)
CN1
OP
CN1
X004
X010
X014
4
3
12 SG
20 V24
19 OPC
Servo ready
(RD)
DOG*2
*3
RD
1
2
V+
ALM
Servo error(ALM)
X017
COM1
Pulse train
Direction
SG
PP
5
9
Forward rotation limit 2*4
Reverse rotation limit 2*4
Servo ON
14 LSN
15 LSP
17 SON
Y000
COM2
NP
7
Y004
Y007
FX2N-16EYT
COM1
Y020
Y027
CLEAR signal
CR 13
SD 11
FX2N-16EX-ES/UL
S/S
Immediate stop command
Zero return command
JOG(+)command
X020
X021
X022
X023
X024
X025
X026
X027
X030
Photo-
coupler
JOG(-)command
Forward rotation positioning command
Reverse rotation positioning command
Forward rotation limit (LSF)*4
Reverse rotation limit (LSR)*4
Stop command
X037
Apx. - 17
Appendix 4. MELSERVO-C Series
Appendix 4-1 Main Unit (Transistor Output)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
*1.
*2.
*3.
*4.
Be sure to use the class-D grounding method (grounding resistance: 100
Near-point signal (DOG)
Ω
or less).
Set the servo amplifier parameter No.21 to "020".
To ensure safety, use the forward rotation limit switch and the reverse rotation limit switch on both sides: the PLC side and
the servo amplifier side. Note that the limit switches on the PLC side should be activated slightly earlier than the limit
switches on the servo amplifier side.
Reverse rotation limit 2 Reverse rotation limit 1 Forward rotation limit 1 Forward rotation limit 2
(Servo amplifier side)
(Programmable
controller side)
LSR
(Programmable
controller side)
LSF
(Servo amplifier side)
Servo motor
Reverse rotation
Forward rotation
Apx. - 18
Appendix 4. MELSERVO-C Series
Appendix 4-1 Main Unit (Transistor Output)
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
A
B
2. FX3UC PLC
FX3UC-32MT/D
24V DC
Class-D
Photo-
grounding*1
coupler
COM
X000
MR-C
ꢁA
Zero Point
signal(PG0)
Series servo
amplifier
CN1
OP
X004
X010
X014
X017
4
Servo ready
(RD)
DOG*2
Apx.
*3
RD
3
CN1
12 SG
20 V24
19 OPC
COM1
COM1
Y000
Pulse train
Direction
SG
PP
5
9
1
2
V+
Y004
Y017
NP
7
ALM
Servo error(ALM)
FX2NC-16EYT
FX2NC-16EX
Forward rotation limit 2*4
Reverse rotation limit 2*4
Servo ON
14 LSN
15 LSP
17 SON
COM1
COM1
Y020
CLEAR signal
CR 13
SD 11
Y27
Photo-
coupler
COM
X020
X021
X022
X023
X024
X025
X026
X027
X030
Immediate stop command
Zero return command
JOG(+)command
JOG(-)command
Forward rotation positioning command
Reverse rotation positioning command
Forward rotation limit (LSF)*4
Reverse rotation limit (LSR)*4
Stop command
X037
*1.
*2.
*3.
*4.
Be sure to use the class-D grounding method (grounding resistance: 100
Near-point signal (DOG)
Ω
or less).
Set the servo amplifier parameter No.21 to "020".
To ensure safety, use the forward rotation limit switch and the reverse rotation limit switch on both sides: the PLC side and
the servo amplifier side. Note that the limit switches on the PLC side should be activated slightly earlier than the limit
switches on the servo amplifier side.
Reverse rotation limit 2 Reverse rotation limit 1 Forward rotation limit 1 Forward rotation limit 2
(Servo amplifier side)
Servo motor
(Programmable
controller side)
LSR
(Programmable
controller side)
LSF
(Servo amplifier side)
Reverse rotation
Forward rotation
Apx. - 19
Appendix 4. MELSERVO-C Series
Appendix 4-2 High-Speed Output Special Adapter
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
Appendix 4-2 High-Speed Output Special Adapter
To assign the inputs/outputs, refer to the following section.
→ Refer to Section 12.1 of "B. Built-in Positioning Function"
Appendix 4-2-1 Sink Input, Sink Output, and Differential Line Driver Output
24V DC
MR-C
Series servo
CN1 amplifier
ꢁA
FX3U-2HSY-ADP
Pulse train
(Forward rotation
pulse train)*5
Epuivalent to
AM26C31
Y0/2+
Y0/2-
Y4/6+
Y4/6-
SGA
PP
9
PG 10
NP
NG
7
8
Direction signal
(Reverse rotation
pulse train)*5
SGA
100V to
240V AC
FX3U-32MR/ES
L
CN1
12 SG
20 V24
19 OPC
N
Class-D
grounding*1
S/S
0V
Photo-
1
2
V+
coupler
24V
X000
ALM
Servo error(ALM)
Zero Point
signal(PG0)
SG
OP
5
4
X004
X010
X014
X017
Forward rotation limit 2*4
Reverse rotation limit 2*4
Servo ON
14 LSN
15 LSP
17 SON
Servo ready
(RD)
DOG*2
*3
RD
3
FX2N-16EYT
COM1
Y020
Y027
CLEAR signal
CR 13
SD 11
FX2N-16EX-ES/UL
S/S
X020
X021
X022
X023
X024
X025
X026
X027
X030
Immediate stop command
Zero return command
JOG(+)command
Photo-
coupler
JOG(-)command
Forward rotation positioning command
Reverse rotation positioning command
Forward rotation limit (LSF)*4
Reverse rotation limit (LSR)*4
Stop command
X037
*1.
*2.
*3.
Be sure to use the class-D grounding method (grounding resistance: 100
Near-point signal (DOG)
Ωor less).
Set the servo amplifier parameter No.21 to "020".
Apx. - 20
Appendix 4. MELSERVO-C Series
Appendix 4-2 High-Speed Output Special Adapter
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
A
B
*4.
To ensure safety, use the forward rotation limit switch and the reverse rotation limit switch on both sides: the PLC side and
the servo amplifier side. Note that the limit switches on the PLC side should be activated slightly earlier than the limit
switches on the servo amplifier side.
Reverse rotation limit 2 Reverse rotation limit 1 Forward rotation limit 1 Forward rotation limit 2
(Servo amplifier side)
(Programmable
controller side)
LSR
(Programmable
controller side)
LSF
(Servo amplifier side)
Servo motor
Reverse rotation
Forward rotation
*5.
Set the pulse output method using the pulse output method setting switch.
Pulse output method setting switch
FP•RP side
Pulse output method
Forward/reverse pulse train
Pulse train + direction
Apx.
PLS•DIR side
Apx. - 21
Appendix 4. MELSERVO-C Series
Appendix 4-2 High-Speed Output Special Adapter
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Example Connection
MEMO
Apx. - 22
Warranty
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Warranty
Please confirm the following product warranty details before using this product.
1. Gratis Warranty Term and Gratis Warranty Range
If any faults or defects (hereinafter "Failure") found to be
the responsibility of Mitsubishi occurs during use of the
product within the gratis warranty term, the product shall be
repaired at no cost via the sales representative or
Mitsubishi Service Company. However, if repairs are
required onsite at domestic or overseas location, expenses
to send an engineer will be solely at the customer's
discretion. Mitsubishi shall not be held responsible for any
re-commissioning, maintenance, or testing on-site that
involves replacement of the failed module.
2. Onerous repair term after discontinuation of
production
1) Mitsubishi shall accept onerous product repairs for
seven (7) years after production of the product is
discontinued.
Discontinuation of production shall be notified with
Mitsubishi Technical Bulletins, etc.
2) Product supply (including repair parts) is not available
after production is discontinued.
3. Overseas service
Overseas, repairs shall be accepted by Mitsubishi's local
overseas FA Center. Note that the repair conditions at
each FA Center may differ.
[Gratis Warranty Term]
The gratis warranty term of the product shall be for one
year after the date of purchase or delivery to a designated
place. Note that after manufacture and shipment from
Mitsubishi, the maximum distribution period shall be six (6)
months, and the longest gratis warranty term after
manufacturing shall be eighteen (18) months. The gratis
warranty term of repair parts shall not exceed the gratis
warranty term before repairs.
4. Exclusion of loss in opportunity and secondary
loss from warranty liability
Regardless of the gratis warranty term, Mitsubishi shall not
be liable for compensation of damages caused by any
cause found not to be the responsibility of Mitsubishi, loss
in opportunity, lost profits incurred to the user or third
person by Failures of Mitsubishi products, special
damages and secondary damages whether foreseeable or
not , compensation for accidents, and compensation for
damages to products other than Mitsubishi products,
replacement by the user, maintenance of on-site
equipment, start-up test run and other tasks.
[Gratis Warranty Range]
1) The range shall be limited to normal use within the
usage state, usage methods and usage environment,
etc., which follow the conditions and precautions, etc.,
given in the instruction manual, user's manual and
caution labels on the product.
5. Changes in product specifications
The specifications given in the catalogs, manuals or
technical documents are subject to change without prior
notice.
2) Even within the gratis warranty term, repairs shall be
charged for in the following cases.
a) Failure occurring from inappropriate storage or
handling, carelessness or negligence by the user.
Failure caused by the user's hardware or software
design.
b) Failure caused by unapproved modifications, etc.,
to the product by the user.
c) When the Mitsubishi product is assembled into a
user's device, Failure that could have been
avoided if functions or structures, judged as
necessary in the legal safety measures the user's
device is subject to or as necessary by industry
standards, had been provided.
d) Failure that could have been avoided if
consumable parts (battery, backlight, fuse, etc.)
designated in the instruction manual had been
correctly serviced or replaced.
e) Relay failure or output contact failure caused by
usage beyond the specified Life of contact
(cycles).
f) Failure caused by external irresistible forces such
as fires or abnormal voltages, and failure caused
by force majeure such as earthquakes, lightning,
wind and water damage.
g) Failure caused by reasons unpredictable by
scientific technology standards at time of
shipment from Mitsubishi.
h) Any other failure found not to be the responsibility
of Mitsubishi or that admitted not to be so by the
user.
6. Product application
1) In using the Mitsubishi MELSEC programmable logic
controller, the usage conditions shall be that the
application will not lead to a major accident even if any
problem or fault should occur in the programmable
logic controller device, and that backup and fail-safe
functions are systematically provided outside of the
device for any problem or fault.
2) The Mitsubishi programmable logic controller has
been designed and manufactured for applications in
general industries, etc. Thus, applications in which the
public could be affected such as in nuclear power
plants and other power plants operated by respective
power companies, and applications in which a special
quality assurance system is required, such as for
Railway companies or Public service purposes shall
be excluded from the programmable logic controller
applications.
In addition, applications in which human life or
property that could be greatly affected, such as in
aircraft, medical applications, incineration and fuel
devices, manned transportation, equipment for
recreation and amusement, and safety devices, shall
also be excluded from the programmable logic
controller range of applications.
However, in certain cases, some applications may be
possible, providing the user consults their local
Mitsubishi representative outlining the special
requirements of the project, and providing that all
parties concerned agree to the special circumstances,
solely at the users discretion.
i
Revised History
FX3G/FX3U/FX3UC PLC User's Manual - Positioning Control Edition
Revised History
Date
Revision
Description
7/2005
2/2006
A
B
First Edition
•
The transistor output for FX3U Series was added.
-
A.Common items
(Subsection 1.2.1 and 1.2.2, Section 2.1 and Subsection 3.1.1).
B.Built-in positioning function
-
(Section 1.1, Subsection 1.5.2 and 1.5.3, Section 2.3, Subsection 2.5.1, Section
4.9, Subsection 6.3.1, 8.2.1 and 8.3.1, Section 9.1 and 10.1).
Appendix:Example connection
-
(Appendix 1-1-1, 1-3, 2-1-1 and 4-1-1).
•
•
FX3U-20SSC-H was added.
-
A.Common items
(Subsection 1.2.1, Section 2.1, Section 2.2, Subsection 3.1.3 and Section 3.2)
Other
-
Section-number changed Revision A (Revision B)
A.Common items: Subsection 3.1.3 (3.1.4)
B. Built-in positioning function: Subsection 2.5.1 (2.5.2) to 2.5.2 (2.5.3)
Correction of errors
-
11/2007
C
•
•
FX3UC (D, DSS) Series PLC added.
Correction of errors
11/2008
3/2009
D
E
•
FX3G Series PLC added.
•
•
The transistor output (source type) for FX3G Series was added.
Explanation corrections for manufacturer’s serial number.
ii
USER'S MANUAL - Positioning Control Edition
FX3G/FX3U/FX3UC SERIES PROGRAMMABLE CONTROLLERS
HEAD OFFICE: TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
HIMEJI WORKS: 840, CHIYODA CHO, HIMEJI, JAPAN
MODEL
FX3U-U-POS-E
MODEL CODE
09R620
JY997D16801E
(MEE)
Effective March 2009
Specifications are subject to change without notice.
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