Panasonic FP2 User Manual

Safety Precautions  
Observe the following notices to ensure personal safety or to prevent accidents.  
To ensure that you use this product correctly, read this User’s Manual thoroughly before use.  
Make sure that you fully understand the product and information on safety.  
This manual uses two safety flags to indicate different levels of danger.  
WARNING  
If critical situations that could lead to user’s death or serious injury is assumed by  
mishandling of the product.  
-Always take precautions to ensure the overall safety of your system, so that the whole  
system remains safe in the event of failure of this product or other external factor.  
-Do not use this product in areas with inflammable gas. It could lead to an explosion.  
-Exposing this product to excessive heat or open flames could cause damage to the lithium  
battery or other electronic parts.  
CAUTION  
If critical situations that could lead to user’s injury or only property damage is  
assumed by mishandling of the product.  
-To prevent excessive exothermic heat or smoke generation, use this product at the values  
less than the maximum of the characteristics and performance that are assured in these  
specifications.  
-Do not dismantle or remodel the product. It could cause excessive exothermic heat or smoke  
generation.  
-Do not touch the terminal while turning on electricity. It could lead to an electric shock.  
-Use the external devices to function the emergency stop and interlock circuit.  
-Connect the wires or connectors securely.  
The loose connection could cause excessive exothermic heat or smoke generation.  
-Do not allow foreign matters such as liquid, flammable materials, metals to go into the inside  
of the product. It could cause excessive exothermic heat or smoke generation.  
-Do not undertake construction (such as connection and disconnection) while the power  
supply is on. It could lead to an electric shock.  
Copyright / Trademarks  
-This manual and its contents are copyrighted.  
-You may not copy this manual, in whole or part, without written consent of Panasonic Electric  
Works SUNX Co., Ltd.  
-Windows is a registered trademark of Microsoft Corporation in the United States and other  
countries.  
-All other company names and product names are trademarks or registered trademarks of  
their respective owners.  
PLC_ORG  
FP2CCU  
Table of Contents  
Table of Contents  
Interchangeability with the FP3 and Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii  
Chapter 1 Functions of Computer Communication Unit  
1.1 Functions and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3  
1.1.1  
1.1.2  
Functions and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3  
Unit Part No. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3  
1.2 Unit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4  
1.2.1 Operation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4  
1.3 Restrictions on Units Combination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6  
1.3.1  
1.3.2  
1.3.3  
Restrictions on Current Consumption . . . . . . . . . . . . . . . . . . . . . . . . 1 6  
Restrictions on Installation Position . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6  
Restrictions on Number of Units that can be Installed . . . . . . . . . . . 1 7  
1.4 Communication Conditions and Restrictions Relating to Functions . . . . . . . 1 8  
1.4.1  
1.4.2  
Precautions when Using the FP2 CPU Unit1 . . . . . . . . . . . . . . . . . 1 8  
Precautions when Using the FP2 CPU Unit2 . . . . . . . . . . . . . . . . . 1 9  
Chapter 2 Names and Functions of Part  
2.1 Names and Functions of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3  
2.1.1  
2.1.2  
2.1.3  
2.1.4  
Names and Functions of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3  
Operating Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4  
COM.1 and COM.2 Ports (9 Pins) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 5  
Transmission Format Setting Switch . . . . . . . . . . . . . . . . . . . . . . . . . 2 6  
Chapter 3 Confirming Unit Settings and Design Contents  
3.1 Setting the Transmission Speed (Baud Rate) and Transmission Format . . 3 3  
3.1.1  
Transmission Format Setting Using Switch . . . . . . . . . . . . . . . . . . . . 3 3  
3.2 Confirming the I/O Allocation and Root No. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 5  
3.2.1  
3.2.2  
I/O Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 5  
Confirming Root No. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6  
i
Table of Contents  
FP2CCU  
Chapter 4 RS232C Port Wiring  
4.1 RS232C Port Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3  
4.2 Wiring between RS232C Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5  
4.2.1  
4.2.2  
4.2.3  
4.2.4  
Connecting to a Personal Computer . . . . . . . . . . . . . . . . . . . . . . . . . 4 5  
Connections with Operation Display Panel . . . . . . . . . . . . . . . . . . . . 4 6  
Connections with RS232C Devices . . . . . . . . . . . . . . . . . . . . . . . . . . 4 7  
Modem Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 8  
Chapter 5 Troubleshooting  
5.1 Operation if an Error Occurs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3  
5.1.1  
If the ALARM LED on the Computer Communication Unit  
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3  
5.1.2  
If the ERROR LED on the Computer Communication Unit  
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4  
5.2 What to Do if an Error Occurs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5  
5.2.1  
If the ALARM LED on the Computer Communication Unit  
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5  
5.2.2  
If the ERROR LED on the Computer Communication Unit  
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5  
5.2.3  
5.2.4  
Communication is Inhibited . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6  
If an Error Response is Returned to the Host Side . . . . . . . . . . . . . 5 6  
Chapter 6 Specifications  
6.1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3  
6.2 Table of MEWTOCOL Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4  
6.2.1  
MEWTOCOLCOM Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4  
6.3 Table of MEWTOCOLCOM Error Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5  
Record of changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R 1  
ii  
FP2CCU  
Interchangeability with the FP3 and Precautions  
Interchangeability with the FP3 and  
Precautions  
Hardware interchangeability  
The user should be aware that there are some differences between the FP2 and FP3  
Computer Communication Units.  
The DIP switch settings are different.  
With the FP2 Computer Communication Unit, only the transmission speed and the  
character bit can be set with the DIP switches. The settings for the parity, the stop bit  
length, and whether or not the CS and CD control signals are effective are fixed as shown  
in the table below.  
There is no reset switch.  
The FP2 Computer Communication Unit has no reset switch.  
Connections with serial devices are made in the same way for both units.  
The specifications for the RS232C interface of the FP2 Computer Communication Unit  
are the same as those for the FP3.  
Two ports are provided, a “COM.1” port and a “COM.2” port.  
However, the COM.1 port is restricted on the functions as below.  
COM.1  
COM.2  
Computer link function  
Modem connection  
Data transmission  
Available  
Available  
Available  
Available  
Available  
Not available  
Not available  
Not available  
Hierarchy command  
Software interchangeability  
The software is interchangeable between the FP2 and FP3 Computer Communication  
Units.  
Program methods on the host side are largely the same.  
There are some differences in the transmission formats, as described below.  
iii  
Interchangeability with the FP3 and Precautions  
FP2CCU  
Comparison of specifications between the FP2 and FP3 Computer  
Communication Units  
Setting item  
Set value  
FP2  
2 ports  
φ
FP3  
1 port  
φ
No. of ports  
Transmission speed (Baud rate)  
19,200 bits/s  
9,600 bits/s  
4,800 bits/s  
2,400 bits/s  
1,200 bits/s  
600 bits/s  
300 bits/s  
9,600 bits/s  
2,400 bits/s  
7bit  
φ
φ
φ
φ
φ
φ
φ
φ
φ
Transmission speed (Baud rate)  
when modem is connected  
φ
φ
Character bit  
Parity  
φ
8bit  
φ
φ
None  
φ
φ
Odd  
φ
Even  
φ
φ
Stop bit  
1bit  
φ
2bit  
φ
φ
Control signals CS and CD  
Reset switch  
Invalid  
φ
Valid  
None  
φ
Provided  
φ : Default setting, or can be set using DIP switches  
—: Cannot be set  
iv  
Chapter 1  
Functions of Computer Communication Unit  
1.1 Functions and Features . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3  
1.1.1  
1.1.2  
Functions and Features . . . . . . . . . . . . . . . . . . 1 3  
Unit Part No. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3  
1.2 Unit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4  
1.2.1 Operation Overview . . . . . . . . . . . . . . . . . . . . . . 1 4  
1.3 Restrictions on Units Combination . . . . . . . . . . . . . . . . . 1 6  
1.3.1  
1.3.2  
1.3.3  
Restrictions on Current Consumption . . . . . . . 1 6  
Restrictions on Installation Position . . . . . . . . 1 6  
Restrictions on Number of Units that can be  
Installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 7  
1.4 Communication Conditions and Restrictions  
Relating to Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 8  
1.4.1  
Precautions when Using the  
FP2 CPU Unit1 . . . . . . . . . . . . . . . . . . . . . . . . 1 8  
1.4.2  
Precautions when Using the  
FP2 CPU Unit2 . . . . . . . . . . . . . . . . . . . . . . . . 1 9  
Functions of Computer Communication Unit  
FP2CCU  
1 2  
FP2CCU  
Functions of Computer Communication Unit  
1.1 Functions and Features  
1.1 Functions and Features  
1.1.1  
Functions and Features  
The FP2 Computer Communication Unit is designed for use with the FP2/FP2SH  
progra,mmable controller. It is used as a communication interface that allows data to be  
read and written between an RS232C device such as a personal computer or display  
panel, and a CPU unit.  
Host computer  
(Personal computer)  
Operation  
display panel  
RS232C  
Can be connected to a display panel and computer.  
Enables a 1:1 connection to a display panel and computer. No software program is  
needed for communication.  
Economical peertopeer communication with a personal computer is possible.  
This unit can be directly connected with a personal computer through RS232C to collect  
and write data from it without building up a largescale network.  
One unit is equipped with two ports.  
One unit is equipped with two RS232C interface ports.  
No communication program is needed on the PLC. (Computer link function)  
The PLC automatically returns responses using the FP series’ MEWTOCOL  
communication protocol so that there is no need to prepare a communication program  
at the side of the PLC.  
Connection with modem (Only COM. 2)  
It is possible to receive data over telephone lines from another PLC, by connecting  
modem with your PLC. (Receiving only)  
1.1.2  
Unit Part No.  
Name  
Part No.  
Computer Communication Unit  
FP2CCU  
Two Dsub connectors (9pin) are provided as accessories with the unit.  
1 3  
Functions of Computer Communication Unit  
1.2 Unit Operation  
FP2CCU  
1.2 Unit Operation  
1.2.1  
Operation Overview  
The Computer Communication Unit reads and writes data and contacts of the CPU unit  
by the host computer, through an RS232C interface.  
When a command is sent from a host side, a response is returned from the PLC side.  
The formats of commands and responses are determined by the MEWTOCOL, which  
is the communication protocol for the FP series of PLCs.  
Programs for host side devices such as computers and display panels are created in  
accordance with the protocol “MEWTOCOL”.  
More than 20 types of commands are available, including commands for reading and  
writing the data area and contacts, etc.  
No program is necessary on the PLC side in order to carry out communication.  
Example:  
When the contents of the data registers are read to a host  
computer:  
DT0  
DT1  
DT2  
5
10  
3
Command  
C
%01#RDD0000000001**  
R
Computer  
RS232C  
C
%01$RD05000A0062  
Response  
R
A
M
5 1  
5
ニ  
ー  
3時  
調
¦
L
~  
Display panel  
Tip  
The display panel for the FP series was designed ahead of time in confor-  
mance with the MEWTOCOL communication protocol, so there is no need  
to take the contents of commands into consideration.  
1 4  
FP2CCU  
Functions of Computer Communication Unit  
1.2 Unit Operation  
Note  
This unit does not support extension header (<). Use the Multi  
Communication Unit.  
Tip  
MEWTOCOL communication protocol for FP series are generally configured  
as shown below.  
Command format (Example showing command for reading data)  
%
0
1
#
R
D
D 0 0 0 0 0 0 0 0 0 1  
CR  
* *  
Start code  
End code  
BCC (Block Check Code)  
Destination  
Indicates command  
Data specification  
*D 00000 00001 indicates data registers DT0 to DT1.  
Type of command  
*RD stands for “Read Data”.  
Response format (Example of response to data reading command)  
%
0
1
$
R
D
0
5
0
0 0  
A
0
0 6  
2
CR  
(lower) (higher) (lower) (higher)  
Start code  
Source  
End code  
BCC (Block Check Code)  
2
Indicates response  
Type of command  
Content of data that was read  
1
Content of data that was read  
1 5  
Functions of Computer Communication Unit  
1.3 Restrictions on Units Combination  
FP2CCU  
1.3 Restrictions on Units Combination  
1.3.1  
Restrictions on Current Consumption  
The power supply (5 V DC) used to drive the internal circuits of the Computer  
Communication Unit and other units is provided from the power supply unit, through the  
backplane.  
The overall current consumption, including the current used by other units, should not  
exceed the rated capacity of the power supply unit.  
Unit name  
Part No.  
Current consumption (at 5 V DC)  
FP2 Computer Communication Unit  
FP2CCU  
60 mA or less  
For information on the internal current consumptions of other units, please refer to the  
“FP2/FP2SH Hardware Manual” and the manuals of the pertinent units.  
1.3.2  
Restrictions on Installation Position  
The Computer Communication Unit can only be installed on the CPU backplane side.  
It should not be installed on the expansion backplane. Also, it should be installed to the  
right of the power supply unit and the CPU unit.  
CPU backplane  
Computer  
Communication Unit  
Can be installed  
only on the CPU  
backplane  
Expansion  
cable  
Expansion backplane  
1 6  
FP2CCU  
Functions of Computer Communication Unit  
1.3 Restrictions on Units Combination  
1.3.3  
Restrictions on Number of Units that can be Installed  
The number of Computer Communication Units that can be installed is as shown in the  
table below.  
Unit type  
When FP2 CPU unit is used  
When FP2SH CPU unit is used  
Computer Communication Unit  
Only one.  
Up to five units, using Computer Com-  
munication Units and Multiwire Link  
Unit (MEWNETW mode) in combina-  
tion.  
Up to three units can be used if they  
are used within the range of restric-  
tions described under “section 1.4  
Communication Conditions and Re-  
strictions Relating to Functions”.  
Multiwire Link Unit  
(MEWNETW mode)  
Up to three units, in combination with  
Computer Communication Units.  
Tip  
The above restrictions do not apply to Multiwire Link Units set to the  
MEWNETF mode and MEWNETW2 mode.  
Note  
If the FP2 CPU unit is being used, make sure the restrictions  
relating to the following communication conditions have been  
carefully confirmed when deciding the number of units to be  
installed.  
1 7  
Functions of Computer Communication Unit  
1.4 Communication Conditions and Restrictions Relating to Functions  
FP2CCU  
1.4 Communication Conditions and Restrictions  
Relating to Functions  
1.4.1  
Precautions when Using the FP2 CPU Unit 1  
If the processing of commands and responses sent from a host computer or display  
panel extends over multiple frames, a busy error (error code 53) will be returned to other  
ports if communication is currently being carried out on one port, and communication will  
be inhibited on those other ports. Combinations to which this restriction applies are  
shown in the diagram below.  
5
1
5
3時  
AM  
調
L¦  
~  
~  
~  
For example, during the time that a  
program is being read at the tool port  
of the CPU unit, a communication er-  
ror will occur at the display panel  
connected to the COM.1 port of the  
Computer Communication Unit.  
Power  
supply  
CPU CCU CCU CCU  
B
A
A
B
A
B
A
B
Group A . . . . . Group comprising the tool port of the CPU unit and the COM.1 port  
of the Computer Communication Unit  
Group B . . . . . Group comprising the COM. port of the CPU unit and the COM.2  
port of the Computer Communication Unit  
A similar restriction also applies if access is being made from another station connected  
with the link unit.  
Unit No. 1 (source station)  
Unit No. 2 (other station)  
Power  
supply  
Power  
supply  
CPU CCU CCU  
MW  
CPU  
MW  
B
A
A
B
A
B
B
A
When remote programming is being carried out from  
another station connected with a Multiwire Link Unit  
(MW), a communication error will occur at the Group A  
ports on the source station side.  
1 8  
FP2CCU  
Functions of Computer Communication Unit  
1.4 Communication Conditions and Restrictions Relating to Functions  
Tip  
“Multiple frames” means that, if a command or response exceeds 118  
bytes, the command or response is divided into multiple segments and  
transmitted or received.  
For example, this applies in cases such as when a program is read from  
a tool port, when commands, which continuously read multiple data, are  
transmitted from a host side.  
If using the FP2SH CPU unit, the above restriction does not apply.  
1.4.2  
Precautions when Using the FP2 CPU Unit2  
Of the commands sent from a host computer or display panel, if the monitor commands  
(the MC, MD, and MG codes) are used, they cannot be read accurately if two or more  
devices within the same group are connected.  
5
5
1
5
1
5
3時  
3時  
AM  
AM  
調
調
¦  
¦  
L
L
~  
~  
~  
~  
~  
~  
For example, if two or more display panels in the  
same group are connected and the command  
sent from the display panel side is a monitor com-  
mand, it cannot be read accurately.  
Power  
supply  
CPU CCU CCU CCU  
C
D
C
D
C
D
B
A
Group A . . . . . CPU unit tool port  
Group B . . . . . CPU unit COM. port  
Group C . . . . . COM.1 port group of Computer Communication Unit  
Group D . . . . . COM.2 port group of Computer Communication Unit  
1 9  
Functions of Computer Communication Unit  
1.4 Communication Conditions and Restrictions Relating to Functions  
FP2CCU  
A similar restriction also applies if access is being made from another station connected  
with the link unit.  
調
5
15  
3
AM  
¦  
L
~  
~  
~  
Unit No. 1 (source station)  
Unit No. 2 (other station)  
Power  
supply  
Power  
supply  
CPU CCU CCU MW  
CPU  
MW  
C
D
C
D
D
C
B
A
If remote programming is used to change the monitor-  
ing destination from another station connected with the  
Multiwire Link Unit (MW), the monitoring destination  
of the Computer Communication Unit COM.1 port of  
the source station side will end up being changed.  
Note  
If a monitor command is used for a port in the same group,  
registered data will be rewritten in sequential order starting from  
the most recent data, and different data will end up being  
monitored.  
Tip  
Monitoring commands are commands used to implement monitoring  
after the contact or data to be monitored has been registered on the  
PLC side.  
The above restriction does not apply if the FP2SH CPU unit is being  
used.  
1 10  
Chapter 2  
Names and Functions of Parts  
2.1 Names and Functions of Parts . . . . . . . . . . . . . . . . . . . . 2 3  
2.1.1  
2.1.2  
2.1.3  
2.1.4  
Names and Functions of Parts . . . . . . . . . . . . 2 3  
Operating Status LEDs . . . . . . . . . . . . . . . . . . . 2 4  
COM.1 and COM.2 Ports (9 Pins) . . . . . . . . . . 2 5  
Transmission Format Setting Switch . . . . . . . 2 6  
Names and Functions of Parts  
FP2CCU  
2 2  
FP2CCU  
Names and Functions of Parts  
2.1 Names and Functions of Parts  
2.1 Names and Functions of Parts  
2.1.1  
Names and Functions of Parts  
Front  
Back  
1
Operating status LEDs  
This displays the operating status of the unit, such as communication conditions  
and error/alarm situations.  
2
3
COM.1 port (RS232C) and COM.2 port (RS232C)  
These ports are used to connect the RS232C connector of an RS232C device such  
as a personal computer or display panel, using a shielded cable.  
Transmission format setting switch  
These switches are used to set the transmission speed (baud rate) and character  
bit for the COM.1 and COM.2 ports. The values set by these switches are  
automatically reflected when the power supply is turned on. For other information  
on the transmission format, please see page 3 3.  
4
Backplane connector  
This connector is used to connect the Computer Communication Unit to the  
backplane.  
Tip  
The settings of the transmission format setting switches become effective  
when the power supply is turned on.  
2 3  
Names and Functions of Parts  
FP2CCU  
2.1  
Names and Functions of Parts  
2.1.2  
Operating Status LEDs  
These display the operating status of the unit, such as communication conditions and  
error/alarm situations.  
Display  
Operation  
ALARM (red)  
Lighted: Unit error (lights on watchdog timer error)  
Not lighted: Goes out when there is no error  
Flashes while data is being sent  
COM. 1  
SD (green)  
Send Data monitor  
Goes out when no data is being sent  
Flashes while data is being received  
Goes out when no data is being received  
Lights if communication error occurs  
Goes out if normal frame is received  
Flashes while data is being sent  
RD (green)  
Receive Data monitor  
ERR (red)  
Communication error  
COM. 2  
SD (green)  
Send Data monitor  
Goes out when no data is being sent  
Flashes while data is being received  
Goes out when no data is being received  
Lights if communication error occurs  
Goes out if normal frame is received  
RD (green)  
Receive Data monitor  
ERR (red)  
Communication error  
LED status (  
: Lighted  
: Flashing  
: Not lighted)  
Tip  
The communication error (ERROR LED) lights if a parity, framing, overrun,  
or BCC error occurs.  
2 4  
FP2CCU  
Names and Functions of Parts  
2.1 Names and Functions of Parts  
2.1.3  
COM.1 and COM.2 Ports (9 Pins)  
These are used to connect the RS232C connector of an RS232C device such as a  
personal computer or display panel, using a shielded cable.  
Pin layout  
Pin No.  
Name  
Mnemonic  
Signal direction  
1
2
3
4
5
6
7
8
9
Frame Ground  
Send Data  
FG  
SD  
RD  
RS  
CS  
Unit External device  
Unit External device  
Unit External device  
Unit External device  
Receive Data  
Request to Send  
Clear to Send  
(Not used)  
Signal Ground  
Receive Carrier Detect  
Equipment Ready  
SG  
CD  
ER  
Unit External device  
Unit External device  
(9pin internal)  
2 5  
Names and Functions of Parts  
FP2CCU  
2.1  
Names and Functions of Parts  
2.1.4  
Transmission Format Setting Switch  
These switches are used to set the transmission speed (baud rate) and character bit for  
the COM.1 and COM.2 ports. The values set by these switches are automatically  
reflected when the power supply is turned on.  
For COM. 1 port For COM. 2 port  
Port  
Data (bit position)  
Function  
1
2
3
4
5
6
7
8
COM. 1  
1
Reserved for system  
1
0
1
0
1
1
Transmission speed  
(Baud rate)  
19,200 bits/s  
9,600 bits/s  
4,800 bits/s  
7bit  
0
1
Character bit  
8bit  
COM. 2  
1
Reserved for system  
0
1
0
1
0
0
1
1
Modem support (9,600 bits/s)  
Transmission speed  
(Baud rate)  
19,200 bits/s  
9,600 bits/s  
4,800 bits/s  
7bit  
0
1
Character bit  
8bit  
In the above table, “1” indicates that the DIP switch is on, and “0” that it is off.  
Transmission speed (baud rate) and transmission format settings when shipped  
from the factory  
Transmission speed (Baud rate) . . . . . . . . . . . . 9,600 bits/s  
Character bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8bit  
Parity check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Odd parity  
Stop bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1bit  
Control signals CS and CD . . . . . . . . . . . . . . . . Invalid  
Note  
The No. 1 and No. 5 transmission format setting switches are  
reserved for system use. These are set to “on” when the unit is  
shipped from the factory, and should be left at that setting.  
2 6  
Chapter 3  
Confirming Unit Settings and Design  
Contents  
3.1 Setting the Transmission Speed (Baud Rate) and  
Transmission Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3  
3.1.1 Transmission Format Setting Using Switch . . 3 3  
3.2 Confirming the I/O Allocation and Root No. . . . . . . . . . 3 5  
3.2.1  
3.2.2  
I/O Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 5  
Confirming Root No. . . . . . . . . . . . . . . . . . . . . . 3 6  
Confirming Unit Settings and Design Contents  
FP2CCU  
3 2  
FP2CCU  
Confirming Unit Settings and Design Contents  
3.1 Setting the Transmission Speed (Baud Rate) and Transmission Format  
3.1 Setting the Transmission Speed (Baud Rate) and  
Transmission Format  
When using the Computer Communication Unit to carry out serial communication with  
an external device, the transmission speed (baud rate) and transmission format must be  
set ahead of time to match those of the external device that will be serving as the partner  
station.  
With the FP2 Computer Communication Unit, the transmission format setting switches  
(DIP switches) can be used to change only the transmission speed (baud rate) and  
character bit to match those of the external device.  
Changing the transmission speed (baud rate) and transmission format  
Items  
Setting when shipped from factory Settings that can be set with the  
switches  
Transmission speed  
(Baud rate)  
9,600 bits/s  
4,800 bits/s  
9,600 bits/s  
19,200 bits/s  
Character bit  
8bit  
7bit  
8bit  
Parity check  
Stop bit  
Valid (odd parity)  
1bit  
Control signals CS and CD Invalid  
Note  
If the transmission speed (baud rate) of 19.2 kbit/s or more is  
necessary, use the Multi Communication Unit.  
3.1.1  
Transmission Format Setting Using Switch  
The transmission format setting switches can be used to change the transmission speed  
(baud rate) and character bit settings for the COM.1 and COM.2 ports. The values set  
with these switches become effective when the power supply is turned on.  
Transmission speed (Baud rate):  
onoff: 19,200 bits/s  
offon: 9,600 bits/s  
onon: 4,800 bits/s  
Character bit: on: 8bit  
off: 7bit  
For COM. 1 port  
For COM. 2 port  
next page  
3 3  
Confirming Unit Settings and Design Contents  
FP2CCU  
Note  
The No. 1 and No. 5 transmission format setting switches are  
reserved for system use. These are set to “on” when the unit is  
shipped from the factory, and should be left at that setting.  
The transmission format setting switches are located on the back of the unit.  
3 4  
FP2CCU  
Confirming Unit Settings and Design Contents  
3.2 Confirming the I/O Allocation and Root No.  
3.2 Confirming the I/O Allocation and Root No.  
3.2.1  
I/O Allocation  
A 16 points (16SE) I/O number is automatically allocated to the slot in which the Computer  
Communication Unit is installed.  
This can be changed to 0 point (0SE) if desired, using tool software.  
Computer Communication Unit  
CCU  
SD RD ERR SD RD ERR AL  
COM.1 COM.2  
COM.1(RS232C)  
COM.2S232C)  
Y40 to Y4F (WY4)  
CPU unit  
X0  
Y10 Y20  
30 to 3F are occupied.  
to  
to to  
XF Y1F Y2F  
(WX0) (WY1) (WY2)  
Notes  
If there are any empty slots between the CPU unit and the  
Computer Communication Unit, check to see if an I/O area has  
been allocated for the empty slot(s).  
When I/O mount allocations are made, or automatic allocation  
is carried out, 16 points are automatically allocated to each  
empty slot.  
If the CPU unit being used is a dualmodule type, make sure  
any occupied I/O areas incorporated in the CPU unit are also  
checked.  
For information on I/O allocations, please refer to the “FP2/FP2SH Hardware Manual”.  
3 5  
Confirming Unit Settings and Design Contents  
FP2CCU  
3.2  
Confirming the I/O Allocation and Root No.  
3.2.2  
Confirming Root No.  
If multiple Computer Communication Units have been installed, they are labeled “Root  
No. 1”, “Root No. 2”, and “Root No. 3” in sequential order, starting from the unit closest  
to the CPU unit.  
Root numbers are not used directly in the handling of the Computer Communication Unit,  
but if a Multiwire Link Unit is being used at the same time, these numbers are  
sometimes specified on the Multiwire Link Unit side.  
Example:  
When two Multiwire Link Units and one Computer  
Communication Unit are being installed  
Root No. 1  
Root No. 2  
Root No. 3  
Computer Communication Unit  
Multiwire Link Unit  
(MEWNETW mode)  
Tip  
If a Multiwire Link Unit set to the MEWNETW mode has also been  
installed, the root numbers are set so that the Multiwire Link Unit is also  
included.  
3 6  
Chapter 4  
RS232C Port Wiring  
4.1 RS232C Port Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3  
4.2 Wiring between RS232C Ports . . . . . . . . . . . . . . . . . . . . 4 5  
4.2.1  
4.2.2  
4.2.3  
4.2.4  
Connecting to a Personal Computer . . . . . . . . 4 5  
Connections with Operation Display Panel . . 4 6  
Connections with RS232C Devices . . . . . . . . 4 7  
Modem Connections . . . . . . . . . . . . . . . . . . . . . 4 8  
RS232C Port Wiring  
FP2CCU  
4 2  
FP2CCU  
RS232C Port Wiring  
4.1 RS232C Port Signals  
4.1 RS232C Port Signals  
Pin layout  
Pin No.  
Signal  
Mnemonic  
Signal direction  
1
2
3
4
5
6
7
8
9
Frame Ground  
Send Data  
FG  
SD  
RD  
RS  
CS  
Unit External device  
Unit External device  
Unit External device  
Unit External device  
Receive Data  
Request to Send  
Clear to Send  
(Not used)  
Signal Ground  
Receive Carrier Detect  
Equipment Ready  
SG  
CD  
ER  
Unit External device  
Unit External device  
9pin internal  
FG (Frame Ground)  
This is connected to the FG terminal on the power supply unit, along with the connector  
housing, through the backplane.  
SD (Send Data)  
This signal is used when data is being sent to a partner device. With the Computer  
Communication Unit, the SD (green) LED among the operating status LEDs flashes if  
the data has been sent properly.  
RD (Receive Data)  
This signal is used when data is being received from a partner device. With the Computer  
Communication Unit, the RD (green) LED among the operating status LEDs flashes if  
the data has been received properly.  
RS (Request to Send)  
This signal requests that data be sent from a partner device. With the Computer  
Communication Unit, the RS signal is constantly on.  
CS (Clear to Send)  
This signal goes on when the partner device is ready to receive data.  
With the FP2 Computer Communication Unit, input to this terminal is invalid, so no  
connections are necessary.  
SG (Signal Ground)  
This signal provides a common reference potential for circuits connected to the  
Computer Communication Unit and any external devices.  
next page  
4 3  
RS232C Port Wiring  
FP2CCU  
4.1  
RS232C Port Signals  
CD (Receive Carrier Detect)  
This signal goes on when the reception signal is within the specified range.  
With the FP2 Computer Communication Unit, input to this terminal is invalid, so no  
connections are necessary.  
ER (Equipment Ready)  
This signal notifies the partner device that the Computer Communication Unit is ready  
for operation. The ER signal of the Computer Communication Unit is constantly on.  
4 4  
FP2CCU  
RS232C Port Wiring  
4.2 Wiring between RS232C Ports  
4.2 Wiring between RS232C Ports  
The Computer Communication Unit and RS232C devices should be connected using  
shielded cables.  
4.2.1  
Connecting to a Personal Computer  
An RS232C cable (Product No. AFB85853) is available for making connections to a  
personal computer.  
AFB85853  
(Crossing cable: 9pin external — 9pin internal)  
Dimension  
2
1
6
1
6
1
M2.6 screws  
M2.6 screws  
3.937  
100  
3000  
/118.11  
(unit: mm/in.)  
Wiring diagram  
Dsub 9pin external  
Dsub 9pin internal  
1
2
Computer side  
PLC side  
Signal name  
(Mnemonic)  
Signal name  
Pin No.  
Pin No.  
(Mnemonic)  
1
2
3
1
2
3
FG  
SD  
RD  
RS  
CD  
RD  
SD  
ER  
4
5
6
7
4
5
6
7
CS  
RI  
SG  
DR  
RS  
CS  
RI  
SG  
CD  
ER  
8
9
8
9
4 5  
RS232C Port Wiring  
FP2CCU  
4.2  
Wiring between RS232C Ports  
4.2.2  
Connections with Operation Display Panel  
An RS232C cable (Product No. AFB85813) is available for making connections to an  
operation display panel that has a Dsub 25pin connector.  
AFB85813  
(Crossing cable: 9pin external — 25pin external)  
Dimension  
2
1
13  
25  
1
6
M2.6 screws  
3.937  
100  
3000  
/118.11  
M2.6 screws  
(unit: mm/in.)  
Wiring diagram  
Dsub 9pin external  
Dsub 25pin external  
1
2
Display panel side  
PLC side  
Signal name  
Pin No.  
Signal name  
(Mnemonic)  
Pin No.  
(Mnemonic)  
1
1
2
3
FG  
SD  
RD  
RS  
FG  
2
SD  
3
RD  
RS  
4
5
6
7
4
5
6
7
CS  
DR  
SG  
CD  
ER  
CS  
RI  
SG  
CD  
ER  
8
9
8
20  
Tip  
The “RS” and “ER” signals of the Computer Communication Unit side  
are constantly on.  
The input to the “CS” and “CD” terminals of the Computer Communica-  
tion Unit side are invalid.  
4 6  
FP2CCU  
RS232C Port Wiring  
4.2 Wiring between RS232C Ports  
4.2.3  
Connections with RS232C Devices  
Connections with an RS232C device that has a Dsub 9pin connector should be made  
as follows.  
Computer Communication  
RS232C side (9pin)  
Unit side  
Pin No. Mnemonic  
Pin No. Mnemonic  
FG  
SD  
1
2
1
2
FG  
SD  
RD  
RS  
CS  
DR  
SG  
CD  
ER  
RD  
3
4
3
4
RS  
(CS)  
5
6
7
5
6
7
SG  
(CD)  
8
9
8
9
ER  
Tip  
The “CS” and “CD” signals from the partner device are set invalid on the  
Computer Communication Unit side, so no connections are necessary.  
Depending on the RS232C device, there may be times when the device  
will not operate properly if the “CS” and “CD” signals do not go on, so  
the “RS” and “CS” signals and the “ER” and “CD” signals on the  
RS232C device side should be shorted.  
4 7  
RS232C Port Wiring  
FP2CCU  
4.2  
Wiring between RS232C Ports  
4.2.4  
Modem Connections  
An RS232C cable (Product No. AFB85843) is available for making connections to a  
modem.  
AFB85843  
(Straight cable for modem connection: 9pin external — 25pin external)  
Dimension  
2
1
25  
13  
6
1
M2.6 screws  
3.937  
100  
3000  
/118.11  
M2.6 screws  
(unit: mm/in.)  
Wiring diagram  
Dsub 9pin external  
Dsub 25pin external  
1
2
PLC side  
Modem side  
Signal name  
(Mnemonic)  
Signal name  
(Mnemonic)  
Pin No.  
Pin No.  
1
2
3
1
2
3
FG  
SD  
RD  
RS  
CS  
FG  
SD  
RD  
RS  
CS  
4
4
5
5
6
7
Open  
RI  
SG  
DR  
SG  
CD  
ER  
6
7
CD  
ER  
8
8
9
20  
RI  
22  
Note  
Only the COM.2 port can be used to connect a modem.  
4 8  
Chapter 5  
Troubleshooting  
5.1 Operation if an Error Occurs . . . . . . . . . . . . . . . . . . . . . . 5 3  
5.1.1  
If the ALARM LED on the Computer  
Communication Unit Lights . . . . . . . . . . . . . . . 5 3  
5.1.2  
If the ERROR LED on the  
Computer Communication Unit Lights . . . . . . 5 4  
5.2 What to Do if an Error Occurs . . . . . . . . . . . . . . . . . . . . . 5 5  
5.2.1  
If the ALARM LED on the Computer  
Communication Unit Lights . . . . . . . . . . . . . . . 5 5  
5.2.2  
If the ERROR LED on the Computer  
Communication Unit Lights . . . . . . . . . . . . . . . 5 5  
5.2.3  
5.2.4  
Communication is Inhibited . . . . . . . . . . . . . . . 5 6  
If an Error Response is Returned to the  
Host Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6  
Troubleshooting  
FP2CCU  
5 2  
FP2CCU  
Troubleshooting  
5.1 Operation if an Error Occurs  
5.1 Operation if an Error Occurs  
5.1.1  
If the ALARM LED on the Computer Communication Unit Lights  
What the ALARM LED does  
The ALARM LED on the Computer Communication Unit lights if the watchdog timer in  
the unit is activated, to warn of a problem.  
CCU  
ALARM LED  
CCU  
SD RD ERRSDRD ERR ALARM  
COM.1  
COM.2  
CPU unit operation when the ALARM LED lights  
The ERROR LED on the CPU unit lights, and operation stops.  
The error code to be checked using programming tools or other means is 41 (intelligent  
unit error).  
If it is necessary to continue operation, change the setting of the CPU unit system  
register 22.  
5 3  
Troubleshooting  
FP2CCU  
5.1  
Operation if an Error Occurs  
5.1.2  
If the ERROR LED on the Computer Communication Unit Lights  
What the ERROR LED does  
The ERROR LED on the Computer Communication Unit lights there is a problem with  
communication between the unit and the external device. There are two ERROR LEDs,  
ERR1 and ERR2, for each channel.  
CCU  
ERROR LED  
CCU  
SDRDERRSDRD ERRALARM  
COM.1  
COM.2  
Operation of the unit continues even if the ERROR LED lights.  
If an error occurs during reception, the frame currently being received is cleared, and the  
ERROR LED lights. If the next frame is received normally, however, that frame is  
processed as a received frame, and the ERROR LED goes out.  
CPU unit operation when the ERROR LED lights  
Operation of the CPU unit is not affected.  
Tip  
In some cases, the contents of the error that occurred may be returned  
to the host side, such as a computer or display panel, as an error re-  
sponse.  
No response is returned if the transmission speed (baud rate) or char-  
acter bit is different between the two devices.  
5 4  
FP2CCU  
Troubleshooting  
5.2 What to Do if an Error Occurs  
5.2 What to Do if an Error Occurs  
5.2.1  
If the ALARM LED on the Computer Communication Unit Lights  
Situation  
The watchdog timer is activated to alert the user of a problem with the Computer  
Communication Unit.  
Solution  
Turn the power supply off and then on again.  
If the LED lights again, there may be a problem with the unit.  
If the LED goes out after the power supply is turned off and then on again, the problem  
may have been caused by noise or another temporary phenomenon. Continue operation  
and watch for further signs of trouble.  
5.2.2  
If the ERROR LED on the Computer Communication Unit Lights  
Situation  
If the communication conditions between the two devices do not match, or the received  
command is in the wrong format, communication cannot be carried out properly.  
Solution 1  
Check to see if the transmission speed (baud rate) and character bit have been set  
correctly. The conditions on the unit side can be set using the DIP switches on the back  
of the unit.  
Solution 2  
Check the transmission format for the host side, such as the computer or display panel.  
The format on the unit side is fixed.  
Parity . . . . . . . Odd  
Stop bit . . . . . 1bit  
Solution 3  
In some cases, the ERROR LED may light if there is a problem with the format of the  
command sent from the host side. Check the settings on the host side, based on the error  
response returned to that side.  
For information on error codes, please check page 6 5.  
Tip  
If correct data is received after erroneous data has been received, the  
ERROR LED goes out.  
5 5  
Troubleshooting  
FP2CCU  
5.2  
What to Do if an Error Occurs  
5.2.3  
Communication is Inhibited  
Situation  
There is a possibility that the cables have not been connected correctly.  
Solution  
If using the unit for the first time, there is a possibility that the cables have been connected  
incorrectly. Check the connector wiring diagram and check for conductivity, using a  
tester.  
For information on wiring and connections, please check “Chapter 4 RS232C Port  
Wiring”.  
5.2.4  
If an Error Response is Returned to the Host Side  
Situation  
There is an error in the format of the command sent from the host side, or the PLC side  
is unable to process the command.  
Solution  
Take corrective action based on the error response code.  
For information on error codes, please check page 6 5.  
Tip  
If the host side is a display panel, check the following.  
Check to see if communication conditions match between the display  
panel side and the PLC side, such as the transmission format and  
transmission speed (baud rate).  
If the device number specified on the display panel side is out of the  
range of numbers that can be used by the PLC involved in the com-  
munication, error code 61 (Data Error) may be returned as an error  
response in some cases.  
If the host side is a computer, try the processing again.  
If correct data is received after erroneous data has been received, the  
ERROR LED goes out.  
5 6  
Chapter 6  
Specifications  
6.1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3  
6.2 Table of MEWTOCOL Command . . . . . . . . . . . . . . . . . . 6 4  
6.2.1  
MEWTOCOLCOM Commands . . . . . . . . . . . 6 4  
6.3 Table of MEWTOCOLCOM Error Code . . . . . . . . . . . . 6 5  
Specifications  
FP2CCU  
6 2  
FP2CCU  
Specifications  
Specifications  
6.1  
6.1 Specifications  
General Specifications  
Item  
Specifications  
Ambient temperature  
Storage temperature  
Ambient humidity  
Storage humidity  
Vibration resistance  
0 to 55 °C/32 to 131 °F  
–20 to +70 °C/– 4 to + 158°F  
30 to 85 % RH (at 25°C noncondensing)  
30 to 85 % RH (at 25°C noncondensing)  
10 to 55 Hz, 1 cycle/min.: double amplitude 0.75 mm (0.03 in.),  
10 min. on 3 axes  
Shock resistance  
Noise resistance  
Operating condition  
Min. 98 m/s2, 4 times on 3 axes  
1000 V , 50 ns, 1 μs pulse widths (based on inhouse measurements)  
pp  
Free of corrosive gases and excessive dust  
Computer Communication Unit Performance Specifications  
Item  
Specifications  
Interface  
Two RS232C ports  
Transmission distance  
Transmission speed (Baud rate)  
Communication method  
Synchronous method  
Transmission code  
Transmission data format  
Max. 15 m/49.212 ft *1  
19,200/9,600/4,800 bits/s, selectable using DIP switch  
Half duplex  
Startstop synchronous method  
ASCII  
Stop bit: 1bit  
Parity: Valid (odd)  
Character bits: 7bit/8bit, selectable using DIP switch  
0 bit first in units of characters  
CR (0DH)  
Data transmission order  
End terminal code  
Computer linking Message  
Header (%) to terminator (CR) Once transmission rights from the  
host computer are received, com-  
munication is started. The commu-  
nication protocol is MEWTOCOL−  
COM.  
Maximum message length Max. 118 characters/frame  
(including “%” and “CR”)  
Current consumption  
Weight  
60 mA or less (at 5 V DC)  
Approx. 120 g/4.233 oz  
*1: The value is given as 15 m/49.212 ft. in the specifications, but if used in an environment with a high noise level,  
communication may be unstable. Check the conditions using the actual device.  
Note  
This unit does not support extension header (<). Use the Multi  
Communication Unit.  
6 3  
Specifications  
FP2CCU  
6.2  
Table of MEWTOCOL Command  
6.2 Table of MEWTOCOL Command  
The following is a table of MEWTOCOL commands that can be used with the FP2  
Computer Communication Unit.  
6.2.1  
MEWTOCOLCOM Commands  
RCS  
WCS  
RCP  
WCP  
RCC  
WCC  
SC  
Read single point of contact information  
Write single point of contact information  
Read plural points of contact information  
Write plural points of contact information  
Read word unit of contact information  
Write word unit of contact information  
Preset word unit in contact area  
Read data area  
RD  
WD  
SD  
Write data area  
Preset of data area  
RS  
Read timer and counter set value area  
Write timer and counter set value area  
Read timer and counter elapsed value area  
Write timer and counter elapsed value area  
Registration and reset of monitor contact  
Registration and reset of monitor data  
Monitor execution  
WS  
RK  
WK  
MC  
MD  
MG  
RR  
Read system register  
WR  
RT  
Write system register  
Read PLC status  
RM  
AB  
Remote control (RUN/PROGRAM mode switching)  
Transmission abort command  
Hierarchy control  
LC  
6 4  
FP2CCU  
Specifications  
6.3  
Table of MEWTOCOLCOM Error Code  
6.3 Table of MEWTOCOLCOM Error Code  
21 Data Error:  
Situation  
A data error occurred during communication.  
There are three types of data errors: parity errors, framing errors, and unit  
receive buffer errors.  
Example of error  
This occurs if the communication format between the host computer side  
and the PLC side is different.  
Precautions when the FP2 Computer Communication Unit is being  
used  
If the parity settings are different, the ERR LED lights but no error code is  
returned.  
ERR LED on the FP2 Computer Communication Unit  
Lights  
22 Overrun Error:  
Situation  
The CPU unit buffer is full, and no more data can be received.  
Example of error  
This occurs if a command being sent before a response has been  
returned in cases such as commands being sent continuously from the  
host side.  
ERR LED on the FP2 Computer Communication Unit  
Lights  
24 Transmission Format Error:  
Situation  
There is an error in the setting of a hierarchy control command.  
Example of error  
This occurs if a hierarchy control command has not been notated  
correctly.  
ERR LED on the FP2 Computer Communication Unit  
Lights  
6 5  
Specifications  
FP2CCU  
6.3  
Table of MEWTOCOLCOM Error Code  
27 Frame Over Error:  
Situation  
The command and response exceed 118 bytes.  
Example of error  
This occurs when a WD command is sent, if the data being sent at one  
time exceeds 118 bytes.  
ERR LED on the FP2 Computer Communication Unit  
Lights  
40 BCC Error:  
Situation  
Transmission error occurred in command data.  
Example of error  
This occurs if the calculation value of the BCC added to the command  
being sent is erroneous.  
ERR LED on the FP2 Computer Communication Unit  
Lights  
41 Format Error:  
Situation  
Command message that does not match the transmission format was  
sent.  
Example of error  
This occurs if the “#” and transmission destination are missing from the  
command being sent.  
ERR LED on the FP2 Computer Communication Unit  
Lights  
42 Not Support Error:  
Situation  
An unsupported command was sent.  
A command was sent to an unsupported destination.  
Example of error  
This occurs if the command name is erroneous by the command which  
has been incorrectly notated .  
ERR LED on the FP2 Computer Communication Unit  
Off  
6 6  
FP2CCU  
Specifications  
6.3  
Table of MEWTOCOLCOM Error Code  
43 Procedure Error:  
Situation  
The PLC side sent a different command while waiting for a send request  
message.  
Example of error  
This occurs when a command consisting of multiple frames is sent, if the  
delimiter “&” that indicates that the command is a continuation of the  
previously sent command is missing.  
ERR LED on the FP2 Computer Communication Unit  
Off  
53 Busy Error:  
Situation  
Commands cannot be received while another command is being  
processed.  
Example of error  
This occurs when multiple units are being used, if a command was sent  
while multiple frames were being processed.  
ERR LED on the FP2 Computer Communication Unit  
Off  
60 Parameter Error:  
Situation  
Data or a parameter setting in a command, such as the code indicating  
the device type (X, Y, D) is erroneous.  
Example of error  
This occurs if the data code is specified erroneously when an RD  
command is sent.  
ERR LED on the FP2 Computer Communication Unit  
Off  
6 7  
Specifications  
FP2CCU  
6.3  
Table of MEWTOCOLCOM Error Code  
61 Data Error:  
Situation  
There is an error in the contact number and/or data number specification.  
There is an error in the decimal or hexadecimal format specification for  
the data.  
Example of error  
This occurs if the data register specification is in hexadecimal format  
when an RD command is sent.  
ERR LED on the FP2 Computer Communication Unit  
Off  
62 Registration Error:  
Situation  
Too many registrations have been entered, or a registration has not been  
entered.  
Example of error  
This occurs if the number of data registered exceeds 16 words when an  
MD command is sent.  
ERR LED on the FP2 Computer Communication Unit  
Off  
63 PC Mode Error:  
Situation  
The PLC is in a mode in which the sent command cannot be processed.  
Example of error  
This occurs if the CPU unit side is in the RUN mode when a WR  
command is sent.  
ERR LED on the FP2 Computer Communication Unit  
Off  
65 Protect Error:  
Situation  
Write operation was performed to the program area or system register in  
the memory protect state.  
Example of error  
This occurs if a password has been specified for the CPU when an RR  
command is sent.  
ERR LED on the FP2 Computer Communication Unit  
Off  
6 8  
FP2CCU  
Specifications  
6.3  
Table of MEWTOCOLCOM Error Code  
66 Address Error:  
Situation  
There is an error in an address specification, such as in the program  
address.  
There is an error in the decimal or hexadecimal format specification for  
the data.  
Example of error  
This occurs if a program address is specified that is larger than the unit  
side, when an RP command is sent.  
ERR LED on the FP2 Computer Communication Unit  
Off  
67 Missing Data Error:  
Situation  
The data specified for reading does not exist.  
ERR LED on the FP2 Computer Communication Unit  
Off  
6 9  
Specifications  
FP2CCU  
6.3  
Table of MEWTOCOLCOM Error Code  
6 10  
Record of changes  
Manual No.  
Date  
Description of changes  
ARCT1F319E/  
ACG-M319E  
MAR.2001  
First edition  
ARCT1F319E-1/ NOV.2006  
ACG-M319E-1  
Second edition  
ARCT1F319E-2/ NOV.2008  
ACG-M319E-2  
Third eidition  
- Change in Corporate name  
ARCT1F319E-3 AUG.2011  
Fourth eidition  
- Change in Corporate name  
Record of changes  
FP2CCU  
R 2  

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