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TOSVERT VF-AS1 Series
RS485 Communication Function
Instruction Manual
Notice
1. Make sure that this instruction manual is delivered to the end user of the inverter.
2. Read this manual before first using the communications function, and keep it handy as a
reference for maintenance and inspections.
* The contents of this manual are subject to change without notice.
© TOSHIBA SCHNEIDER INVERTER CORPORATION 2005
All rights reserved.
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Contents
1.
2.
3.
General outlines of the communication function......................................................................................................... 3
Data transmission specifications................................................................................................................................ 4
Communication protocol............................................................................................................................................. 5
3.1. About the handling of received frames............................................................................................................... 5
TOSHIBA Inverter Protocol......................................................................................................................................... 6
4.1. Data transmission format ................................................................................................................................... 7
4.1.1.Data transmission format used in ASCII mode......................................................................................... 7
4.1.2.Data transmission format used in binary mode ...................................................................................... 10
4.1.3.Transmission format of Block Communication ....................................................................................... 13
4.2. Commands....................................................................................................................................................... 17
4.3. Transmission errors ......................................................................................................................................... 20
4.4. Broadcast communication function.................................................................................................................. 21
4.5. Examples of the use of communication commands......................................................................................... 23
4.6. Examples of Communication programs ........................................................................................................... 24
MODBUS-RTU protocol............................................................................................................................................ 29
5.1. MODBUS-RTU transmission format .............................................................................................................. 30
5.1.1.Read command (03)............................................................................................................................... 30
5.1.2.Write command (06)............................................................................................................................... 31
5.2. CRC Generation............................................................................................................................................... 32
5.3. Error codes....................................................................................................................................................... 32
Inter-drive communication ........................................................................................................................................ 33
6.1. Proportional control of speed ........................................................................................................................... 37
6.2. Transmission format for inter-drive communication ......................................................................................... 39
Communication parameters ..................................................................................................................................... 40
7.1. Baud rate(, ) , Parity ()................................................................................................ 42
7.2. Inverter number()................................................................................................................................. 42
4.
5.
6.
7.
7.3. Communication time-out time (), Communication time-out action (f804 ............................................................... 43
)
7.4. Send waiting time (, ) .............................................................................................................. 44
7.5. Free notes()......................................................................................................................................... 44
Commands and monitoring from the computer ........................................................................................................ 45
8.1. Communication commands (commands from the computer) .......................................................................... 45
8.2. Monitoring from the computer .......................................................................................................................... 49
8.3. Utilizing panel (LEDs and keys) by communication ......................................................................................... 58
8.3.1.LED setting by communication............................................................................................................... 58
8.3.2.Key utilization by communication ........................................................................................................... 61
Parameter data......................................................................................................................................................... 62
8.
9.
Appendix 1 Table of data codes........................................................................................................................................ 67
Appendix 2 Response time............................................................................................................................................... 68
Appendix 3 Compatibility with the communication function of the VF-A7 ......................................................................... 69
Appendix 4 Troubleshooting ............................................................................................................................................. 70
Appendix 5 Connecting for RS485 communication........................................................................................................... 71
2
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1. General outlines of the communication function
This manual explains the RS485 communication function provided for the TOSVERT VF-AS1 series
of industrial inverters.
(1) RS485 communication by the use of a two-wire RS485 communication port (standard function)
(2) RS485 communication by the use of a four-wire RS485 communication port (standard function)
(1) 2-wire RS485 communication
connector
(2) 4wire RS485 communication
connector
By using these communication functions in combination with the computer link function designed to
establish a link between a higher level computing machine or controller (hereinafter referred to as a
computer) and each inverter on the network, or with the inter-drive communication function that al-
lows proportional control of inverters without using a computer, you can set up a network for data
communication between inverters.
There are two communication protocols available: Toshiba Inverter Protocol and MODBUS-RTU
Protocol (this command does not support all commands). To select a protocol, the communication
protocol selection parameter f807or f829is used. (Refer to Section 3. Communication proto-
col.)
<Computer link>
By preparing the program (explained later), the following information can be exchanged between the
computer (host) and the inverter.
(1) Monitoring function (used to monitor the operating status of the inverter: Output frequency,
current, voltage, etc.)
(2) Command function (used to issue run, stop and other commands to the inverter)
(3) Parameter function (used to set parameters and read their settings)
<Inter-drive communication function>
Master inverter sends the data, that is selected by the parameter, to all the slave inverters on the
same network. This function allows a network construction in which a simple synchronous or
proportional operation is possible among plural inverters (without the host computer).
As for data communication codes, the TOSVERT VF-AS1 series of inverters support the binary
(HEX) code, in addition to the JIS (ASCII) code. A communication number is used to access the de-
sired data item.
* The smallest unit of information that computers handle is called a “bit (binary digit),” which repre-
sents the two numbers in the binary system: 1 or 0. A group of 16 bits is referred to as a “word,”
which is the basic unit of information the VF-AS1 series of inverters use for data communication.
One word can handle data items of 0 to FFFFH in hexadecimal notation (or 0 to 65535 in decimal
notation).
BIT15
BIT8BIT7
BIT0
1 bit
1 word
3
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2. Data transmission specifications
Items
Specifications
Transmission scheme
Half-duplex
*: Standard
default setting
Synchronization scheme
Communication baud rate 9600/19200*/38400 bps (selectable using a parameter) *1
Start-stop synchronization
Communication protocol
Character transmission
TOSHIBA Inverter Protocol * / MODBUS-RTU (selectable using a parameter) *1
<ASCII mode> JIS X 0201 8-bit (ASCII)
<Binary mode, MODBUS-RTU> Binary codes fixed to 8 bits
Received by inverter: 1 bit, Sent by inverter: 2 bits *3
Parity *2: Even */Odd/Non parity (selectable using a parameter) *1
checksum(Toshiba inverter protocol), CRC(MODBUS-RTU)
Stop bit length
Error detecting scheme
,
Character
transmission 11-bit characters *1 (Stop bit=1, with parity)
format
Order of bit transmission
Frame length
Low-order bits transmitted first
Variable (to a maximum of 17 bytes)
*1: Changes to setting do not take effect until the inverter is turned back on or reset.
*2: JIS-X-0201 (ANSI)-compliant 8-bit codes are used for all messages transmitted in ASCII mode
and vertical (even) parity bits specified by JIS-X-5001 are added to them. These even parity bits
can be changed to odd parity bits by changing the parameter setting (a change to the parameter
setting does not take effect until the inverter has been reset.)
*3: Here are the default character transmission format.
Characters received: 11 bits (1 start bit + 8 bits + 1 parity bit + 1 stop bit)
START
BIT
PARITY STOP
BIT BIT
BIT0
BIT1
BIT2
BIT3
BIT4
BIT5
BIT6
BIT7
The inverter receives one stop bit.
(The computer can be set so as to send 1, 1.5 or 2 stop bits.)
Characters sent: 12 bits (1 start bit + 8 bits + 1 parity bit + 2 stop bits)
START
PARITY STOP
BIT BIT
STOP
BIT
BIT
The inverter sends two stop bits.
(The computer can be set so as to receive 1, 1.5 or 2 stop bits.)
BIT0
BIT1
BIT2 BIT3
BIT4
BIT5
BIT6
BIT7
4
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3. Communication protocol
This communication protocol supports the TOSHIBA Inverter Protocol and part of MODBUS-RTU
protocol.
Select the desired protocol from in the following communication protocol selection parameters
(, ).
“Parameter Name and , Communication Number. 0807 and 0829”
Data Range: 0, 1 (Initial value: 0)
0: TOSHIBA (Includes inter-drive communication)
1: MOUBUS-RTU
* A parameter change is reflected when the inverter is reset, such as in power off.
3.1. About the handling of received frames
To send and receive data frames, a frame synchronization system for locating the start and end
points of each frame is defined with time for which no data is sent (time interval equivalent to the
time required to send 3.5 bytes of data).
If no data is sent for the time required to send 3.5 bytes of data at the current transmission speed
(approx. 4 ms or more at 9,600 bps or approx. 2 ms or more at 19,200/38,400 bps) after receipt of a
frame, the entire frame is assumed to have reached and information in it is analyzed. For this rea-
son, an interval corresponding to at least 3.5 bytes of data must be placed between frames.
When sending a significant data set using two or more frames, an interval corresponding to at least
1.5 bytes of data must be placed between frames. If an interval corresponding to 1.5 bytes or more
is not placed, the contents of a frame are analyzed separately from those of the other frames, and
therefore communication are not carried out normally.
When two or more inverters on the same line are controlled individually one after another, not only
data from the host computer to an inverter but also a response from an inverter to the host computer
are transmitted to the other inverters on the line too. Therefore, an interval corresponding to at least
3.5 bytes should be placed between the time when the host computer receives a response from an
inverter and the time when it sends a frame to the next inverter. Otherwise the return frame received
and the frame that is sent immediately after receipt of the return frame will be recognized as one
frame and communication will not be carried out normally.
[Correct]
Frame B
Frame A
Note: An inverter cannot receive frame
3.5 bytes or more
B before it finishes analyzing the
contents of frame A.
[Wrong] If divided into two smaller frames, frame A cannot be received as a
single frame.
Frame B
Frame A (1/2)
Frame A (2/2)
1.5 bytes or more
Note: Correct if the interval corresponds
to less than 1.5 bytes of data.
5
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4. TOSHIBA Inverter Protocol
Select “TOSHIBA” (, =) in the communication protocol selection parameters.
“TOSHIBA” (, =) is set for initial communication protocol selection of shipment
setting. (See “3. Communication protocol.”)
„ Exchange of data between the computer and the inverter
In communication between the computer and the VF-AS1 (hereinafter referred to as the inverter),
the inverter is always placed in wait states and acts as a slave that operates on a request from the
computer.
A discrimination between ASCII mode and binary mode is automatically made with the start code.
Start code
“(”
“CR” (carriage return)
Required
ASCII mode
Binary mode
“2FH(/) ”
Not required
(1) If there is no transmission format or the inverter number that matches, an error occurs and no
response is returned.
(2) When an inverter number is added behind the “(” communication will take place only in case of
broadcast communication or if the number matches up with that assigned to the inverters.
(3) When a time-out period is specified with parameter f803(communication time-out time), a
time-out occurs if communication do not terminate normally within the specified time. With
parameter f804(communication time-out action), you can specify what the inverter should do
if a time-out occurs. For details, refer to Section 7.3.
(4) On executing the command received, the inverter returns data to the computer. For the response
time, see Appendix 2, “Response time.”
„ Note
Communication is not possible for about two seconds after the power is supplied to the inverter until
the initial setting is completed. If the control power is shut down due to an instantaneous voltage
drop, communication is temporarily interrupted.
6
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4.1. Data transmission format
„ Note: The term “trip status” used in this manual includes retry waiting status and trip retention status.
4.1.1. Data transmission format used in ASCII mode
A communication number is used to specify a data item, all data is written in hexadecimal, and JIS-
X-0201 (ASCII (ANSI))-compliant transmission characters are used.
„ Computer → Inverter
Omissible in one-to-one communication
For the W and P commands only Omissible
(3.5bytes
Blank) (28H) 2 bytes
"("
INV-NO
CMD Communication No.
1 byte 4 bytes
DATA
"&"
SUM
")"
CR (3.5bytes
0 to 4 bytes (26H) 2 bytes (29H) (0DH)
Blank)
Omissible
1. “(“ (1 byte)
: Start code in ASCII mode
2. INV-NO (2 bytes) : Inverter number (Omissible in one-to-one communication) ... 00 (30H, 30H) to 99 (39H,
39h), *(2AH)
The command is executed only when the inverter number matches up with that specified
using a parameter.
(When * is specified in broadcast communication, the inverter number is assumed to match
if all numbers except * match. When * is specified instead of each digit (two-digit number),
all inverters connected are assumed to match.)
If the inverter number does not match or if the inverter number is of one digit, the data will
be judged invalid and no data will be returned.
3. CMD (1 byte)
4. Communication No.(4 bytes)
: Communication number (See 11, “Parameter data.”)
5. Data (0 to 4 bytes): Write data (valid for the W and P commands only)
: Command (For details, see the table below.)
6. “&” (1 byte)
: Checksum discrimination code (omissible. When omitting this code, you also need to omit
the checksum.)
7. Sum (2 bytes)
: Checksum (omissible)
Add the ASCII-coded value of the last two digits (4 bits/digit) of the sum of a series of bits
(ASCII codes) from the start code to the checksum discrimination code.
Ex.: (R0000&??) CR
28H+52H+30H+30H+30H+30H+26H=160H
The last two digits represent the checksum. = 60
When omitting the checksum, you also need to omit the checksum discrimination
code.
8. “)” (1 byte)
9. CR (1 byte)
: Stop code (omissible)
: Carriage return code
„ Details of commands and data
CMD (1 byte)
Write data (0 to 4 bytes) Hexadecimal number
No data
Write data (0 to FFFF)
R (52H): RAM read command
W (57H): RAM/EEPROM write command
P (50H) RAM write command
Write data (0 to FFFF)
7
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„ Inverter → computer
At time of broadcast communication, returning of data is not executed, except for the inverters to be
returned, when the inverter number is not matched, and the inverter number has only one character.
This is because there will be a risk of that the returned data may be deformed.
„ Data returned when data is processed normally (ASCII mode)
Omissible in one-to-one communication
Omissible
SUM ")"
(3.5bytes
Blank) (28H) 2 bytes
"("
INV-NO
CMD Communication No.
1 byte 4 bytes
DATA
"&"
CR (3.5bytes
0 to 4 bytes (26H) 2 bytes (29H) (0DH)
Blank)
Omissible
1. “(“ (1 byte)
: Start code in ASCII mode
2. INV-NO (2 bytes) : Inverter number (omitted if it is not found in the data received) ... 00 (30H, 30H) to 99 (39H,
39H)
If the inverter number matches up with that specified using a parameter, data will be return-
ed to the computer. In broadcast communication, only the destination inverter (with a num-
ber matching up with the smallest effective number) returns data to the computer.
In broadcast communication, no data is returned from any inverters except the inverter
bearing a number that matches up with the smallest effective number.
Ex.: (*2R0000) CR -> (02R00000000) CR)
Data is returned from the inverter with the number 2 only, but no data is returned from
inverters with the number 12, 22 ....
3. CMD (1 byte)
: Command ... The command is also used for a check when an inverter is tripped.
Under normal conditions... The uppercase letter R, W or P is returned, depending on the
command received: R, W or P command.
When an inverter is tripped... The lowercase letter r, w or p is returned, depending on the
command received: R, W or P command.
(The command received is returned with 20H added to it.)
4. Communication No.(4 bytes) :
The communication number received is returned.
5. Data (0 to 4 bytes): Data ... The data read in is returned for the R command, while the data received is returned
for the W and P commands. If the data received is composed of less than 4 digits, it will be
converted into 4-digit data and returned.
Ex.: (W123412) CR → (W12340012) CR)
6. “&” (1 byte)
: Checksum discrimination code (omitted if it is not found in the data received)
7. Sum (2 bytes)
: Checksum ... Omitted if no checksum discrimination code is found in the data received.
ASCII-coded value of the last two digits (4 bits/digit) of the sum of a series of bits (ASCII
codes) from the start code to the checksum discrimination code.
8. “)” (1 byte)
9. CR (1 byte)
: Stop code (omitted if it is not found in the data received)
: Carriage return code
8
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• Data returned when data is not processed normally (ASCII mode)
In case an error occurs, communication error command (4EH(N) or 6EH(n)) and the error type num-
ber is returned to the computer in addition to the checksum. At time of broadcast communication of
the binary mode, returning of data is not executed except for the inverter to be returned (inverter
number 00H) and when the inverter number is not matched. This is because there will be a risk that
the returned data may be deformed.
Omissible Omissible
(3.5bytes “(“
INV-NO
“N” or “n”
DATA
"&"
SUM
")"
CR (3.5bytes
Blank) (28H) 2 bytes
(4EH) (6EH)
4 bytes
(26H)
2 bytes
(29H) (0DH) Blank)
Omissible
“(“ (1 byte)
: Start code in ASCII mode
“N” or “n” (1 byte)
:Communication error command ... This is also used for the checking of inverter trip.
“N” for the normal communication and “n” during the inverter trip.
INV-NO (2 bytes)
Data (4 bytes)
: Inverter number (omitted if it is not found in the data received) ... 00 (30H, 30H) to 99 (39H,
39H)
If the inverter number matches up with that specified using a parameter, data will be return-
ed to the computer. In broadcast communication, only the destination inverter (with a num-
ber matching up with the smallest effective number) returns data to the computer.
: Error code (0000~0004)
0000 ... Impossible to execute (Although communication is established normally, the
command cannot be executed because it is to write data into a parameter whose
setting cannot be changed during operation (e.g., maximum frequency) or the
EEPROM is faulty.)
0001 ... Data error (The data is outside the specified range or it is composed of too many
digits.)
0002 ... Communication number error (There is no communication number that matches.)
0003 ... Command error (There is no command that matches.)
0004 ... Checksum error (The checksum result differs.)
“)” (1 byte)
: Stop code ... This code is omitted if it is not found in the data received.
„ Examples:
(N0000&5C)CR... Impossible to execute (e.g., a change of maximum frequency data during opera-
tion)
(N0001&5D)CR... Data error (Data is outside the specified range.)
(N0002&5E)CR... No communication number (There is no communication number that matches.)
(N0003&5F)CR... There is no command that matches. (Commands other than the R, W and P
commands)
(Ex.: L, S, G, a, b, m, r, t, w ...)
(N0004&60)CR... Checksum error (The checksum result differs.)
No data returned ... Format error or invalid inverter number
9
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4.1.2. Data transmission format used in binary mode
A communication number is used to specify a data item, data is written in hexadecimal form, and
data in transmission characters are represented by binary codes (HEX codes).
„ Computer → Inverter (binary mode)
Omissible in one-to-one communication No data for the 52H (R) command
(3.5bytes
Blank) (2FH)
“/”
INV-NO
1 byte
CMD
1 byte
Communication No.
2 bytes
DATA
2 bytes
SUM
1 byte
(3.5bytes
Blank)
Checksum area
Not omissible
1. 2FH (“/”) (1 byte) : Start code in binary mode
2. INV-NO (2 bytes) : Inverter number (Omissible in one-to-one communication) ... 00H to 3FH ,FFH
In case the inverter number is other than FFH (broadcast communication), command is ex-
ecuted only when the inverter number coincides with the one designated with the panel. If
the inverter number is not matched, it will be judged invalid and the data is not returned.
3. CMD (1 byte)
: Command (For details, see the table below.)
52H (R) command: The size of the data following CMD is fixed to 3 bytes. (Communication
number: 2 bytes, checksum: 1 byte)
57H (W), 50H (P) and 47H (G) commands: The size of the data following CMD is fixed to 5
bytes.
(Communication number: 2 bytes, data: 2 byte, checksum: 1 byte)
Any command other than the above is rejected and no error code is returned.
4. Communication No.(2 bytes)
: Communication number (See 11, “Parameter data.”)
5. Data (2 bytes)
: 0000H to FFFFH
57H (W) and 50H (P) commands: Write data (An area check is performed.)
47H (G) command: Dummy data (e.g., 0000) is needed.
52H (R) command: Any data is judged invalid. (No data should be added.)
6. Sum (2 bytes)
: Checksum (not omissible) 00H to FFH
Value of the last two digits (1 byte) of the sum of a series of bits (codes) from the start code
of the data returned to the data (or to the communication number for the 52H (R) com-
mand)
Ex.: 2F 52 00 ?? ... 2FH+52H+00H+00H=81H
The last two digits (??) represent the checksum= 81
„ Details of commands and data
CMD (1 byte)
Write data (2 bytes) Hexadecimal number
No data
52H (R): RAM read command
57H (W): RAM/EEPROM write command
50H (P): RAM write command
47H (G): RAM read command (for two-wire networks)
Write data (0000H to FFFFH)
Write data (0000H to FFFFH)
Dummy data (0000H to FFFFH)
10
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„ Inverter → computer (binary mode)
At time of broadcast communication of the binary mode, returning of data is not executed except for
the inverter to be returned (inverter number 00H) and when the inverter number is not matched. This
is because there will be a risk that the returned data may be deformed.
• Data returned when data is processed normally (Binary mode)
Omissible
(3.5bytes
Blank) (2FH)
“/”
INV-NO
1 byte
CMD
1 byte
Communication No.
2 bytes
DATA
2 bytes
SUM
1 byte
(3.5bytes
Blank)
Checksum area
Not omissible
1. 2FH (“/“) (1 byte) : Start code in binary mode
2. INV-NO (2 bytes) : Inverter number... 00H to 3FH (The inverter number is omitted if it is not found in the data
received.)
If the inverter number matches up with that specified from the operation panel, data will be
returned from the inverter. If the inverter number does not match, the data will be invalid
and no data will be returned.
3. CMD (1 byte)
: Command...The command is also used for a check when the inverter is tripped.
Under normal conditions...52H (R), 47H (G), 57H (W) or 50H (P) is returned, depending on
the command received.
When the inverter is tripped...The lowercase letter 72H (r), 67H (g), 77H (w) or 70H (p) is
returned with 20H added to it, depending on the command received.
4. Communication No. (4 bytes)
: The communication number received is returned.
5. Data (2 bytes)
: Data ... 0000H to FFFFH
The data read is returned for the 52H (R) and 47H (G) commands, while the data written is
returned for the 57H (W) and 50H (P) commands.
6. Sum (1 bytes)
: Checksum (not omissible) 00H to FFH
Value of the last two digits (1 byte) of the sum of a series of bits (codes) from the start code
to the data.
11
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2) Error Processing (Binary mode)
In case an error occurs, communication error command (4EH(N) or 6EH(n)) and the error type num-
ber is returned to the computer in addition to the checksum. At time of broadcast communication of
the binary mode, returning of data is not executed except for the inverter to be returned (inverter
number 00H) and when the inverter number is not matched. This is because there will be a risk that
the returned data may be deformed.
Omissible
(3.5bytes “/”
Blank) (2FH) 1 byte
INV-NO
Norn
(4EH)(6EH)
DATA
2 bytes
SUM
1 byte
(3.5bytes
Blank)
Checksum area Not omissible
Norn (1 byte)
Data (2 bytes)
: Communication error command ... This command is also used for a check when the in-
verter is tripped.
“4EH (N)” is returned under normal conditions, while “6EH (n)” is returned when the in-
verter is tripped.
: Error code (0000~0004)
0000 ... Impossible to execute (Although communication is established normally, the com-
mand cannot be executed because it is to write data into a parameter whose set-
ting cannot be changed during operation (e.g., maximum frequency) or the
EEPROM is faulty.)
0001 ... Data error (The data is outside the specified range or it is composed of too many
digits.)
0002 ... Communication number error (There is no communication number that matches.)
0004 ... Checksum error (The checksum result differs.)
No code returned ...Command error, format error (failure to receive the specified number of
bytes within 0.5 seconds, or an parity, overrun or framing error) or the
inverter number does not match or an inverter in broadcast communi-
cation in the binary mode except for the inverter for data returning (the
inverter numbered 00H).
„ Examples:
2FH, 4EH, 00H, 00H, 7DH ... Impossible to execute (e.g., a change of maximum frequency data
during operation)
2FH, 4EH, 00H, 01H, 7EH ... Data setting error (The data specified falls outside the specified
range.)
2FH, 4EH, 00H, 02H, 7FH ... No communication number (There is no communication number that
matches.)
2FH, 4EH, 00H, 04H, 81H ... Checksum error (The checksum result differs.)
12
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4.1.3. Transmission format of Block Communication
What is block communication?
Data can be written in and read from several data groups set in one communication by setting the
type of data desired for communication in the block communication parameters (, ,
to ) in advance. Block communication can save the communication time.
Data is transmitted hexadecimal using the binary (HEX) code transmission characters. “Computer
→ inverter” is for writing only, while “Inverter → computer” for reply is for reading only.
„ Computer → Inverter (Block Communication)
Number of writing data groups x 2 bytes
Omissible
INV-NO
Num-
ber of
write
Num-
ber of
read
(3.5bytes
Blank)
Start
Code
“／”
CMD
“X”
Write
data1
High
Write
data1
Low
Write
data2
High
Write
data2
Low
SUM (3.5bytes
Blank)
data
data
groups
groups
Checksum Area
1. 2FH(“/”) (1 byte) : Start code of binary mode
2. INV-NO (1 byte) : Inverter number. (Can be omitted in 1:1 communication): 00H to 3FH, FFH
Executed only when the inverter number matches the inverter number. Set on the panel, ex-
cept in FFH (broadcast communication).
Communication data will be invalidated and data will not be returned either if the inverter
number. Does not match.
3. CMD (1 byte)
4. Number of write data groups (1 byte)
: Specify the number of data groups to be written (00H to 02H).
: ‘X’ (Block communication command)
If specified outside of the range, data will be treated as a format error and data will not be re-
turned.
5. Number of read data groups (1 byte)
: Specify the number of data groups to be read (00H to 05H).
If specified outside of the range, data will be returned as “Number of read data groups = 0”
when returned by the inverter.
6. Write data1 (2 bytes)
: Needed when the number of write data groups is larger than 1.
Data to be written to the specified parameter selected by
Dummy data is needed if the number of write data groups is larger than 1 even though(none)
is selected for
7. Write data2 (2 bytes)
: Needed when the number of write data groups is 2.
Data to be written to the specified parameter selected by
Dummy data is needed if the number of write data groups is 2 even though(none) is selected
for
8. SUM (1 byte)
: Checksum (Cannot be omitted) 00H to FFH
Lower two digits (1 byte) of total sum from start code (SUM value not included)
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„ Block Write 1, 2
Select data, which is desired to be written in block communication, in block write Data 1 and 2 Pa-
rameters (, ). This parameter becomes effective when the system is reset, such as
when power is turned off. When the setting is completed, turn off and then on the power.
No. Block Write Data
For data details, see:
0
1
2
3
4
5
Deselect
－
Command information 1 (FA00)
Command information 2 (FA20)
Frequency Command (FA01)
Terminal board output data (FA50)
Communication analog output (FA51)
“8.1 Command by communication”
* When “Deselect” is specified in the parameters, no data will be written even though write data is
specified.
„ Block Read 1 to 5
Select read data, which is desired to be read in block communication, in block read data 1 and 5 Pa-
rameters (to). This parameter becomes effective when the system is reset,
such as when power is turned off. When the setting is completed, turn off and then on the power.
No. Block Read Data
For data details, see:
0
1
Deselect
－
Status information (FD01)
Output frequency (FD00)
Output current (FD03)
2
3
4
Output voltage (FD05)
5
Alarm Information (FC91)
PID feedback value (FD22)
Input terminal board monitor (FD06)
Output terminal board monitor (FD07)
V/II terminal boad monitor (FE36)
RR/S4 terminal board monitor (FE35)
RX terminal board monitor (FE37)
Input voltage (DC detection) (FD04)
Speed feedback frequency (FD16)
Torque (FD18)
6
7
“8.2 Monitoring from communication”
8
9
10
11
12
13
14
15
16
17
18
19
My monitor 1(FE60)
－
My monitor 2(FE61)
－
My monitor 3(FE62)
－
My monitor 4(FE63)
－
Free notes (F880)
“7.5 Free notes ()”
* V/II terminal board monitor (FE36), RR/S4 terminal board monitor (FE35) and RX terminal board
monitor (FE37) will become hold data during a trip. Otherwise, real-time data appears.
* “0000” will be returned as dummy data, if “0 (Deselect)” is selected for the parameter and “read” is
specified.
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„ Inverter → Computer
At time of broadcast communication of the binary mode, returning of data is not executed except for
the inverter to be returned (inverter number 00H) and when the inverter number is not matched. This
is because there will be a risk that the returned data may be deformed.
1) Normal processing
Omissible
Number of read data groups x 2 bytes
(3.5
bytes Code
Blank) “/”
Start
INV CMD
No. “Y”
Write Read Read Read Read Read Read Read Read Read Read SUM
Status data1 data1 data2 data2 data3 data3 data4 data4 data5 data5
(3.5
bytes
Blank)
Number
of Read
Data
high
low
high
low
high
low
high
low
high
low
Groups
Checksum area
1. 2FH “/” (1 byte)
2. INV-NO (1Byte)
：Start code in binary mode
：Inverter number･･･00H to 3FH
If the inverter number matches up with that specified from the operation panel, data will
be returned from the inverter. If the inverter number does not match, the data will be
judged invalid and no data will be returned.
Communication data will be invalidated and data will not be returned either if the in-
verter number does not match. (Inverter number is considered matched if it is omitted
during reception)
3. CMD(1Byte)
:‘Y’ (Block communication command [monitoring])
Lowercase letter ‘y’ during an inverter trip, including standing by for retrying and during
a trip.
4. Number of read data groups (1 byte)
: Return the number of data groups to be read (00H to 05H).
5. Write status (1 byte) : Return 00H to 03H.
* Failing to write in the specified parameter in the number of write data groups, set “1”
in the corresponding bit for the parameter failed to write. (See below.)
Bit Position
Data Type
7
6
5
4
3
2
1
0
－
6. Read data1 - 5 (2 bytes)
: Return according to the number of read data groups. “0000H” is returned as dummy
data if “0” is selected as a parameter.
Read data1: Data selected by . Read data2: Data selected by .
Read data3: Data selected by . Read data4: Data selected by .
Read data5: Data selected by .
7.SUM(1Byte)
: Checksum (Cannot be omitted) 00H to FFH
Lower two digits (1 byte) of total sum from start code of return data to read data.
„ Example
(When set as follows: = (Command information 1), = (frequency command),
= (status information), = (output frequency), = (output current), = (output
voltage) and = (alarm information)
Computer → Inverter：2F 58 02 05 C4 00 17 70 D9
Inverter → Computer：2F 59 05 03 00 00 00 00 00 00 00 00 00 00 90 (When parameter is not set)
Inverter → Computer：2F 59 05 00 40 00 00 00 00 00 00 00 00 00 CD CD (When parameter is set)
Inverter → Computer：2F 59 05 00 64 00 17 70 1A 8A 24 FD 00 00 3D (During operation at 60Hz)
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2) Error Processing (Binary mode)
In case an error occurs, communication error command (4EH(N) or 6EH(n)) and the error type num-
ber is returned to the computer in addition to the checksum.
Omissible
(3.5bytes “/”
Blank) (2FH) 1 byte
INV-NO
Norn
(4EH)(6EH)
DATA
2 bytes
SUM
1 byte
(3.5bytes
Blank)
Checksum area Not omissible
“N” or “n” (1 byte) : Communication error command. Also for check during an inverter trip (includes standing
by for retrying and trip holding). “4EH (N)” when normal, “6EH (n)” during an inverter trip.
DATA (2 bytes)
: Error code (0004)
0004
: Checksum error (The checksum does not match)
No return : Command error, format error (specified number of bytes is not received in 1sec,
or parity error, overrun error or framing error), inverter number mismatch, and
inverter number other than 00H in broadcast communication.
„ Examples
Computer → Inverter : 2F 58 02 05 C4 00 17 70 D8
Inverter → Computer : 2F 4E 00 04 81 ... Checksum error
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4.2. Commands
Here are the communication commands available.
Command
Function
R command Reads the data with the specified communication number.
W command Writes the data with the specified communication number. (RAM and EEPROM).
P command Writes the data with the specified communication number. (RAM).
Reads the data with the specified communication number. (For binary mode only.
Dummy data is required for this command.)
G command
X command Block communication (Computer -> Inverter)
Y command Block communication (Inverter -> Computer)
„ W (57H) (RAM*1 /EEPROM*2 write)
This command is used to write new data into the parameter specified using it communication num-
ber. It writes data into the RAM and EEPROM. For parameters whose settings cannot be stored in
the EEPROM (e.g., parameter with the communication number FA00), the W (57H) command writes
data into the RAM only. It cannot be used to write data into read-only parameters (e.g., parameter
with the communication number FD?? or FE??).
Each time an attempt to write data is made, the inverter checks if the data falls within the specified
range. If this check reveals that the data falls outside the specified range, the inverter will reject it
and return an error code.
- Ex.: Setting the deceleration time (communication number: 0010) to 10 sec.
CR: Carriage return
<ASCII mode>
Computer → Inverter
(W00100064)CR
Inverter → Computer
(W00100064)CR
…(10÷0.1=100=0064H)
<Binary mode>
Computer → Inverter
2F 57 00 10 00 64 FA
Inverter → Computer
2F 57 00 10 00 64 FA
…(10÷0.1=100=0064H)
Notice
♦ Do not write the same parameter to the EEPROM more than 10,000 times. The life time of EEPROM is
approximately 10,000 times.(Some parameters are not limited, please refer to the “9.Parameter data “)
The lifetime of EEPROM is approximately 10,000 times. When using the TOSHIBA inverter protocol and
the data does not need to be records, use P command (the data is written only to RAM).
„ Explanation of terms
*1: The RAM is used to temporarily store inverter operation data. Data stored in the RAM is cleared
when the inverter is turned off, and data stored in the EEPROM is copied to the RAM when the
inverter is turned back on.
*2: The EEPROM is used to store inverter operation parameter settings, and so on. Data stored in
the EEPROM is retained even after the power is turned off, and it is copied to the RAM when the
inverter is turned on or reset.
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„ P (50H) (RAM*1 write)
This command is used to rewrite data into the parameter specified using a communication number.
It writes data into the RAM only. It cannot be used to write data into any read-only parameters. Each
time an attempt to write data is made the inverter checks whether the data falls within the specified
range. If this check reveals that the data falls outside the range, the inverter will reject it and return
an error code.
- Ex.: Entering the emergency stop command (communication number: FA00) from the computer
<ASCII mode>
Computer → Inverter
Inverter → Computer
(PFA009000)CR
(PFA009000)CR
…Command priority, emergency stop
command
<Binary mode>
Computer → Inverter
2F 50 FA 00 90 00 09
Inverter → Computer
2F 50 FA 00 90 00 09
„ R (52H) (Data read)
This command is used to read the setting of the parameter specified using a communication num-
ber.
- Ex.: Monitoring the electric current (communication number: FE03)
<ASCII mode>
Computer → Inverter
(RFE03)CR
Inverter → Computer
(RFE03077B)CR
…Current: 1915 / 100 = 19.15%
<Binary mode>
Computer → Inverter
2F 52 FE 03 82
Inverter → Computer
2F 52 FE 03 07 7B 04
„ G (47H) (Data read)
This command is used to read the parameter data specified using a communication number. Alt-
hough this command is used for the previous model to control the operation of two or more inverters
in binary mode through a two-wire RS485 network, the “R” command can also be used without
problems for the VF-AS1 series.
To use the “G” command, however, dummy data (2 bytes) is needed.
This command is available only in binary mode.
- Ex.: Monitoring the electric current (communication number: FE03)
Computer → Inverter
Inverter → Computer
2F 47 FE 03 00 00 77
2F 47 FE 03 07 7B F9
* In this example, the data 00H sent from the computer to the inverter is dummy data.
„ S (53 H)/ s (73 H) Inter-drive communication command(RAM*1 Write)
This command is for using frequency command values in % (1 = 0.01%), instead of in Hz, and is for
synchronous-proportional operation in inter-drive communication. This command can also be
used in ordinary computer link communication.
When writing in the frequency command (FA01, FA05) is enabled and a parameter other than it is
specified, a communication number error will result. Data is written in the RAM only and at this
time the data check such as an upper limit and lower limit checking is not carried out.
Data is not returned from the inverters while this command is used. This command can be used
only in the binary mode.
For the details of the format, see “6.2 Transmission format for inter-drive communication.”
Use (%) as the unit for frequency command values specified by the command S, instead of (Hz),
and the receiving side converts units for frequency values to “Hz” in accordance with the point con-
version parameter. The conversion formula is shown below.
Frequency command value (Hz) =
Point 2 frequency (F813) − Point 1 frequency (F812)
x (Frequency command value (%)
Point 2 (F814) − Point 1 (F811)
− Point 1 (F811) + Point 1 frequency (F812)
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When Command “s” (lowercase letter) is received, the slave side judges that the master side is
tripped and operates in accordance with the inter-drive communication parameter (,
).
For detail, see "7. Communication parameters ".
- Examples: 50% frequency command (2-wire RS485 communication)
(If maximum frequency = Frequency for operation at 80Hz = 40Hz: 50% = 5000d = 1388H)
<Binary mode>
Master inverter → Slave inverter
Slave inverter → Master inverter
2F 53 FA 01 13 88 18
No return
„ X(58H)/Y (59H) (Block Communication Command)
Data selected in the block communication write parameters (,) is written in the
RAM. When returning data, data selected in block communication read parameters ( to
) is read and is returned.
For detail, see "4.1.3. Transmission format of Block Communication ".
- Examples: 60Hz operation command from communication and monitoring (Monitoring when al-
ready operating at 60Hz)
(Parameter Setting: = , = , = , = , = , =
, = )
<Binary mode>
Computer → Inverter
Inverter → Computer
2F 58 02 05 C4 00 17 70 D9
2F 59 05 00 64 00 17 70 1A 8A 24 FD 00 00 3D
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4.3. Transmission errors
„ Table of error codes
Error name
Description
Error code
Impossible to exe- The command is impossible to execute, though communication was
0000
cute
established normally.
1 Writing data into a parameter whose setting cannot be changed
during operation (e.g., maximum frequency) *1
2 Writing data into a parameter while “” is in progress
Invalid data is specified.
Data error
0001
0002
Communication
number error
Command error
There is no communication number that matches.
The command specified does not exist.
0003 (ASCII mode)
No code returned (Binary
mode)
Checksum error
Format error
The Checksum does not match.
0004
The data transmission format does not match.
1 One-digit inverter number (ASCII mode)
2 The CR code is found in the designated position. (ASCII mode)
Ex.:Communication number of 4 digit or less. In the case of (R11)
CR, 11) CR is recognized as a communication number and
the CR code is not recognized, with the result that a format
error occurs.
No code returned
3 A code other then the stop code (“)”) is entered in the stop code
position.
Receiving error
A parity, overrun or framing error has occurred. *2
No code returned
*1: For parameters whose settings cannot changed during operation, see ”Table of parameters.”
*2: Parity error : The parity does not match.
Overrun error : A new data item is entered while the data is being read.
Framing error : The stop bit is placed in the wrong position.
* For the errors with “no code returned” in the above table, no error code is returned to avoid a data
crash.
If no response is received, the computer side recognizes that a communication error has occurred.
Retry after a lapse of some time.
* If the inverter number does not match, no processing will be carried out and no data will be re-
turned, though it is not regarded as an error.
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4.4. Broadcast communication function
Broadcast communication function can transmit the command (write the data) to multiple inverters
by one communication. Only the write (W, P) command is valid and the read (R, G) command is in-
valid. The inverters subject to the broadcast communication are the same to the independent com-
munication; 0 to 99 (00H - 63H) in the ASCII mode, and 0 to 63 (00H - 3FH) in the binary mode. To
avoid data deforming, the inverters to return data will be limited.
„ “Overall” broadcast communication (ASCII mode / Binary mode)
- ASCII Mode
If you enter two asterisks (**) in the inverter number position of the data transmission format, the
computer will send the data simultaneously to all inverters (with an inverter number between 0 and
99 (00 to 63H)) on the network.
- Binary Mode
To put "FF" to the specified place of the inverter number in the communication format validates the
broadcast communication and the command is transmitted to all the applicable inverters in the net-
work (inverter numbers from 0 to 63 (00 to 3FH)).
<Inverter that returns data to the computer>
Data is returned from the inverter bearing the inverter number 00 only.
If you do not want inverters to return data, do not assign the number 00 to any inverter on the net-
work.
„ “Group” broadcast communication (ASCII mode only)
If you put “*?” In the inverter number position of the data transmission format, data will be sent
simultaneously to all inverters bearing a number whose digit in the one’s place in decimal notation
is”?”
If you put ”?*” In the inverter number position of the data transmission format, the data will be sent
simultaneously to all inverters bearing a number whose digit in the ten’s place in decimal notation
is”?”.
(“?”: Any number between 0 and 9.)
<Inverter that returns data to the computer>
Data is returned only from the inverter bearing the smallest number in the same group of inverters
(i.e., inverter whose number in the position of ”*” is 0).
If you do not want inverters to return data to the computer, do not assign a number having a 0 in the
position of “*” to any inverter on the network.)
„ Examples of broadcast communication
Ex: Set the frequency setting for communication to 60Hz.
1 Host computer → Multiple inverters: broadcast communication (ASCII Mode)
Example of transmission of data from host computer to inverter: (**PFA011770)CR
Example of data returned from inverter to host computer: (00PFA011770)CR
Data is returned from the inverter numbered 00 only, while commands are issued to all inverters
connected to the network.
2 Host computer → A specific group of inverters: group communication (ASCII Mode)
Example of transmission of data from host computer to inverters: (*9PFA011770)CR
Example of data returned from inverter to host computer: (09PFA011770)CR
Data is returned only the inverter numbered 09 only, while commands are issued to a maximum
of 10 inverters bearing the number 09, 19, 29, 39, ... or 99.
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Host
computer
Block 2
Inverter No.20 Inverter No.21
Block 1
Inverter No.29
VF-AS1
Inverter No. 10 Inverter No.11
Inverter No.19
VF-AS1
VF-AS1
VF-AS1
VF-AS1 VF-AS1
*1
*1: Error signal I/F
In broadcast communication, only the representative inverter in each block returns data to the host
computer. However, you can make the representative inverter in each block report the occurrence of
a problem in the block. To do so, follow these steps.
Set the timer function so that, if a time-out occurs, the inverter will trip (Ex.: = (sec)), set
the output terminal selection parameter (FL) so that trip information will be output through the output
terminal (=), and set the input terminal selection parameter (F) of the representative in-
verter in each block to “external input trip (emergency stop)” (=). Then, connect the input
terminal (F, CC) of the representative inverter to the FL terminal (FLA, FLC) of each of the other in-
verters in the same block (FLA-F, FLC-CC). In this setting, if an inverter trips, the representative in-
verter will come to an emergency stop, and as a result it will report the occurrence of a problem in its
block to the computer. (If the representative inverter returns a lowercase letter in response to a
command from the computer, the computer will judge that a problem has arisen in an inverter.) To
examine details on the problem that has arisen, the host computer accesses each individual inverter,
specifying its communication number. To make the computer issue a command to all inverters in
block 1 or block 2 shown in the figure above, specify “1*” or “2*”, respectively. In this system, inverter
No. 10 will return data to the computer if a problem arises in block 1, or inverter No. 20 if a problem
arises in block 2. For overall broadcast communication, specify “**”, in which case the inverter with
the communication number “00” will return data to the computer.
In this example, if you want the computer to maintain communication without bringing an represen-
tative inverter to an emergency stop, set its input terminal selection parameter to “disabled
(=) but not to “external input trip (emergency stop).” This setting causes the host computer
to check the setting of the input terminal information parameter (Communication No.=DF06, bit 0) of
the representative inverter, and as a result enables the computer to detect the occurrence of a
problem.
CAUTION:
Data from inverters will be deformed if inverters of the same number are connected on the network.
Never assign same single numbers to inverters on the network.
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4.5. Examples of the use of communication commands
Here are some examples of the use of communication commands provided for the VF-AS1 series of
inverters.
Inverter numbers and checksum used in ASCII mode are omitted from these examples.
„ Examples of communication
- To run the motor in forward direction with the frequency set to 60 Hz from the computer
<ASCII mode>
Computer → Inverter
Inverter → Computer
(PFA011770)CR
(PFA011770)CR
…Set the operation frequency to 60 Hz.
(60 / 0.01 Hz = 6000 = 1770H)
(PFA00C400)CR
(PFA00C400)CR
…Set to “forward run” with commands and frequency
instruction from the computer enabled.
<Binary mode>
Computer → Inverter
2F 50 FA 01 17 70 01
Inverter → Computer
2F 50 FA 01 17 70 01
2F 50 FA 00 C4 00 3D 2F 50 FA 00 C4 00 3D
- To monitor the output frequency (during 60 Hz operation)
<ASCII mode>
Computer → Inverter
Inverter → Computer
(RFD00)CR
(RFD001770)CR
…Set the operation frequency to 60 Hz.
(60÷0.01Hz=6000=1770H)
<Binary mode>
Computer → Inverter
2F 52 FD 00 7E
Inverter → Computer
2F 52 FD 00 17 70 05
- To monitor the status of the inverter
<ASCII mode>
Computer → Inverter
Inverter → Computer
(RFD01)CR
(rFD010003)CR
…For details on statuses, see 8.2 “Monitoring from
the computer.” (Stop status, FL output status, trip
status (r command))
<Binary mode>
Computer → Inverter
2F 52 FD 01 7F
Inverter → Computer
2F 72 FD 01 00 03 A2
- To check the trip code (when the inverter is tripped because of )
…For details on trip codes, see “Trip code monitor” in 8.2, “Monitoring
from the computer.” (18H = 24d “” trip status)
<ASCII mode>
Computer → Inverter
(RFC90)CR
Inverter → Computer
(rFC900018)CR
<Binary mode>
Computer → Inverter
2F 52 FC 90 0D
Inverter → Computer
2F 72 FC 90 00 18 45
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4.6. Examples of Communication programs
According to the hardware configuration of the computer used, select a serial output port. To use an
RS232C port on the computer, you will have to prepare an RS232C-RS485 conversion unit sepa-
rately.
An USB-RS485 conversion unit (USB0001Z) is available as our standard offering.
Ex. 1: BASIC program for monitoring the output frequency continuously (RS232C, ASCII mode)
(Toshiba version of Advanced BASIC-86 Ver. 3.01.05J)
◊ Monitoring the output frequency continuously
1) Examples of programs
10 OPEN "COM1:9600,E,8,1" AS #1
20 A$=”FE00”
--- 9600 baud, even parity, 8-bit length, 1 stop bit
--- Specifies the communication number for
monitoring the output frequency.
--- Transmits data to the inverter.
Note: The carriage return code is added
automatically.
30 PRINT #1,"("+”R”+A$+")"
40 INPUT#1,B$
50 AAA$=“&H”+MID$(B$,7,4)
--- Receives data returned from the inverter.
--- Extracts only data items from the data re-
turned.
60 F$=LEFT$(STR$(VAL(AAA$)/100),6)
70 PRINT " Output frequency =";F$+“Hz”
80 GOTO 20
--- Converts data into decimal form.
--- Displays the output frequency.
--- Repeats.
2) Examples of program execution results (stop command issued during 80 Hz operation)
Output frequency = 80 Hz ...
Output frequency = 79.95Hz
:
:
Output frequency = 0Hz
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Ex. 2: BASIC program for executing an input command with checksum (RS232C, ASCII mode)
(Toshiba version of Advanced BASIC-86 Ver. 3.01.05J)
◊ Checking if the maximum frequency setting has been changed correctly
1) Examples of programs
10 OPEN "COM1:9600,E,8,1" AS #1
20 INPUT"Send Data=";A$
30 S$="("+A$+"&"
--- 9600 baud, even parity, 8-bit length, 1 stop bit
--- Reads in data to be sent to the inverter.
--- Adds “(“ and “&” to the read data in.
40 S=0
50 L=LEN(S$)
60 FOR I=1 TO L
Calculates the number of bits (checksum).
70 S=S+ASC(MID$(S$,I,1))
80 NEXT I
90 CHS$=RIGHT$(HEX$(S),2)
100 PRINT #1,"("+A$+"&"+CHS$+")"
--- Sends the data including the checksum result
to the inverter.
110 INPUT #1,B$
120 PRINT "Receive data= ";B$
130 GOTO 20
--- Receives data returned from the inverter.
--- Displays the data received.
--- Repeats.
2) Examples of program execution results
Send Data=? R0011
--- Reads the maximum frequency (0011).
--- 1F40 (Maximum frequency: 80 Hz)
--- Changes the maximum frequency to 60 Hz
(1770).
Receive Data= (R00111F40&3D)
Send Data=? W00111770
Receive Data= (W00111770&36)
Send Data=? R0011
Receive Data= (R00111770&31)
--- Reads the maximum frequency (0011).
--- 1770 (Maximum frequency: 60 Hz)
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Ex. 3 BASIC program for communication tests (RS232C, ASCII mode)
(Toshiba version of Advanced BASIC-86 Ver. 3.01.05J)
◊ Accessing a parameter (with error code.)
1) Examples of programs
100 INPUT "Baud rate=9600/4800/2400/1200";SPEED$
---- Selects a baud rate.
110 INPUT "Parity=even(E)/odd(O)";PARITY$
---- Selects parity.
120 OPEN "COM1:"+SPEED$+","+PARITY$+",8,1"AS #1
130 INPUT "Send data";B$
140 PRINT #1,B$
---- Enters a command.
150 C$=""
160 T=TIMER
170 COUNT=(TIMER-T)
180 IF COUNT >3 THEN 270
190 IF COUNT <0 THEN T=TIMER
200 IF LOC(1)= 0 THEN A$="":GOTO 220
210 A$=INPUT$(1,#1)
220 IF A$ <>CHR$(13) THEN 240
230 GOTO 290
---- Prevents an increase in the number of digits.
---- Carriage return
(CR) to finish reading in.
240 IF A$="" THEN 160
250 C$=C$+A$
260 GOTO 160
270 COLOR @0,7:PRINT "!!! There is no data to return. !!! ";:COLOR @7,0:PRINT
280 GOTO 130
---- Repeats.
290 PRINT A$;
300 C$=C$+A$
310 PRINT "Return data=";c$;
320 GOTO 130
---- Repeats.
2) Examples of program execution results (In this example, the inverter number is 00.)
Baud rate=9600/4800/2400? 9600
Parity=even(E)/odd(O)? E
Send data? (00R0011)
Return data= (00R00111770)
Send data? ()
---- Selects 9600 baud.
---- Select E (even parity).
---- Carries out test communication.
---- Error
!!! There is no data to return. !!!
Send data? (R0011)
Return data= (R00111770)
Send data?
---- No data is returned.
:
:
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Ex. 4 A VisualBaisc program for the ASCII mode communication
(VisualBaisc is the registered trademark of the U.S. microsoft company.)
◊ Accessing a parameter
1) Sample program executive example (Monitor of the output frequency (FD00))
Transmission and reception of the optional data like in the following example can be done by do-
ing "the arrangement of the form control" of the explanation and "the description of the code" with
mentioning later.
Reply data from the inverter
are 1770H (6000d) with this
example.
As for the unit of the output
frequency (FD00),1= 0.01Hz,
the Inverter is being operated
in 60.00Hz.
2)Arrangement of the control on the form
Two TextBox, two Labels , three CommandButton and one MsComm are arranged on the form as
follows.
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3)The description of the code
Private Sub Form_Load()
Form1.Show
'**********************************************************************
' Setting the labels (Initialization)
'**********************************************************************
Label1.Caption = "Data for transmission"
Label2.Caption = "Received data"
Command1.Caption = "Transmit"
Command2.Caption = "Clear"
Command3.Caption = "Exit"
'**********************************************************************
' Setup of communication (Initialization)
'**********************************************************************
MSComm1.RThreshold = 0
MSComm1.InputLen = 1
MSComm1.CommPort = 1
MSComm1.InBufferCount = 0
MSComm1.OutBufferCount = 0
Form1.MSComm1.Settings = "9600,E,8,1"
Form1.MSComm1.InputMode = comInputModeText
'**********************************************************************
' A serial port is opened. (Initialization)
'**********************************************************************
If False = MSComm1.PortOpen Then
MSComm1.PortOpen = True
End If
'**********************************************************************
' Data are received.
'**********************************************************************
Do
dummy = DoEvents()
If MSComm1.InBufferCount Then
Text1.Text = Text1.Text & MSComm1.Input
End If
Loop
End Sub
'**********************************************************************
' The contents of the text box are transmitted.
'**********************************************************************
Private Sub Command1_Click()
MSComm1.Output = Text2.Text & Chr(13)
End Sub
'**********************************************************************
'The contents of the text box are removed.
'**********************************************************************
Private Sub Command2_Click()
Text2.Text = ""
Text1.Text = ""
End Sub
'**********************************************************************
'A serial port is closed, end
'**********************************************************************
Private Sub Command3_Click()
If True = MSComm1.PortOpen Then
MSComm1.PortOpen = False
End If
End
End Sub
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5. MODBUS-RTU protocol
The MODBUS-RTU protocol of VF-AS1 supports only part of the MODBUS-RTU protocol. Only
two commands are supported, “03: Multiple data read (limited only to two bytes)” and “06: Word
writes.” All data will be binary codes.
„ Parameter Setting
• Protocol selection (, )
Select “MODBUS－RTU (, = ) in the communication selection parameters.
“TOSHIBA” (, =) is set for communication protocol selection in initial shipment set-
ting. (See “3. Communication protocol.”)
* Caution when selecting MODBUS-RTU
Note that selecting this protocol disables the inter-drive communication functions set with parame-
ters and , and the block communication functions set with parameters ,
and to .
• Inverter number ()
Inverter numbers. 0 to 247 can be specified in MODBUS-RTU. “0” is allocated to broadcast com-
munication (no return). Set between 1 and 247.
<Related Parameter: Change and set as necessary>
: Baud rate (2-wire RS485) : Communication speed (4-wire RS485)
: Parity (common to 2-wire RS485 and 4-wire RS485)
„ Data Exchange with Inverters
The inverters are always ready to receive messages and perform slave operation in response to
computer requests.
A transmission error will result if the transmission format does not match. The inverters will not re-
spond if a framing error, parity error, CRC error or an inverter number mismatch occurs. If no re-
sponse is received, the computer side recognizes that a communication error has occurred.
Transmit data again.
(1) In case spacing for more than 3.5 bytes are provided before characters, all data immediately
preceding it will be aborted. Data will sometimes be aborted if spacing for 1.5 bytes or more is
provided between characters. (See “3.1. About the handling of received frames.”)
(2) Communication will be effective only when inverter numbers match or the communication mode
is 0 (Broadcast communication). If there is no inverter number that matches or 0 (broadcast
communication) is specified, no response is returned by any inverter.
(3) Message reception will end if spacing for more than 3.5 bytes are provided at the end of charac-
ters. (See “3.1. About the handling of received frames.”)
(4) If no communication take place within the time specified using the timer function, the computer
will assume that a communication error has occurred and trip the inverter. The timer function is
disabled when the inverter is turned on or initialized. For details, see Section 7.3, “Timer function,
Communication time-out time action.”
(5) On executing the command received, the inverter returns data to the computer. For the response
time, see Appendix 2, “Response time.”
„ Caution:
Communication is not possible for about two seconds after the power is supplied to the inverter until
the initial setting is completed. If the control power is shut down due to an instantaneous voltage
drop, communication is temporarily interrupted.
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5.1. MODBUS-RTU transmission format
MODBUS-RTU sends and receives binary data without a frame-synchronizing start code and de-
fines the blank time to recognize the start of a frame. MODBUS-RTU decides the data that is first
received subsequently as the first byte of a frame after a blank time for 3.5 bytes at the on-going
communication speed.
5.1.1. Read command (03)
„ Computer → Inverter *The text size is 8 bytes fixed.
Commu- Commu- Number Number
Inverter
No.
nication
No.
(high)
nication
No.
(low)
of Data
Groups
(high)
of Data
Groups
(low)
CRC
(low)
CRC
(high)
Command
03
(3.5bytes
Blank)
(3.5bytes
Blank)
00
01
1) Inverter No.. (1 byte)
: Specify an inverter number between 0 and 247 (00H to F7H).
Command processing will be executed only broadcast communication “0” and with
those inverters that match set inverter numbers. Data will not be returned if “0”
(broadcast communication) and inverter numbers do not match.
2) Command (1 byte)
: Set the read command (03H fixed).
3) Communication No.. (2 bytes)
: Set in the order of high to low numbers.
4) Number of data groups (2 bytes) : Set the number of data words 0001 (fixed) in the order of high to low numbers.
5) CRC (2 bytes)
: Set generation results of CRC in the order of low to high numbers.. For the
method to generate CRC, see “5.2 CRC Generation.” Note that the setting se-
quence is reversal to that of others.
„ Inverter → Computer (Normal return) *The text size is 7 bytes fixed.
Inverter
No.
Number of Read data Read data
CRC
(low)
CRC
(high)
Command
03
(3.5bytes
Blank)
(3.5bytes
Blank)
Data
02
(high)
(low)
1) Command (1 byte)
2) Number of data
: Read command (03H fixed) will be returned.
: A number of data bytes (02H fixed) will be returned. The number of data groups for
transmission to the inverters is 2 bytes and 01H fixed. Note that the number of data re-
turned by the inverters is 1 byte and 02H fixed.
3) Read data (2 bytes)
: Returned in the order of read data (high) and (low).
„ Inverter → Computer (Abnormal return) *The text size is 5 bytes fixed.
CRC
(low)
CRC
(high)
Inverter No. Command Error Code
83
(3.5bytes
Blank)
(3.5bytes
Blank)
1) Command (1 byte)
2) Error code (1 byte)
: 83H fixed (Read command error) (Command + 80H)
: See “4.3 Transmission errors.”
„ Example: Reading output frequency (During 60Hz operation)
(Computer → inverter)
(Inverter → computer)
01 03 FD 00 00 01 B5 A6
01 03 02 17 70 B6 50
„ Example: Data specification error
(Computer → inverter)
(Inverter → computer)
01 03 FD 00 00 02 F5 A7
01 83 03 01 31
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5.1.2. Write command (06)
„ Computer → Inverter *The text size is 8 bytes fixed.
Commu- Commu-
Command nication nication
No. (high) No. (low)
Inverter
No.
Write Data Write Data
(high) (low)
CRC
(low)
CRC
(high)
(3.5bytes
Blank)
(3.5bytes
Blank)
06
1) Inverter No. (1 byte)
: Specify an inverter number between 0 and 247 (00H to F7H).
Command processing will be executed only broadcast communication “0” and with
those inverters that match set inverter numbers. Data will not be returned if “0”
(broadcast communication) and inverter numbers do not match.
: Set the write command (06H fixed).
2) Command (1 byte)
3) Communication No. (2 bytes) : Set in the order of high to low numbers.
4) Write data (2 bytes)
5) CRC (2 bytes)
: Set in the order of high to low write data.
: Set generation results of CRC in the order of low to high numbers. For the method to
generate CRC, see “5.2 CRC Generation.” Note that the setting sequence is rever-
sal to that of others.
„ Inverter → Computer (Normal return) *The text size is 8 bytes fixed.
Commu- Commu-
Inverter
No.
Write Data Write Data
(high) (low)
CRC
(low)
CRC
(high)
Command nication
nication
(3.5bytes
Blank)
(3.5bytes
Blank)
No. (high) No. (low)
06
: Write command (06H fixed) will be returned.
: Returned in the order of write data (high) and (low).
1) Command (1 byte)
2) Write data (2 bytes)
„ Inverter → Computer (Abnormal return) *The text size is 5 bytes fixed.
CRC
(low)
CRC
(high)
Inverter No. Command Error Code
86
(3.5bytes
Blank)
(3.5bytes
Blank)
1) Command (1 byte)
2) Error code (1 byte)
: 86H fixed (Read command error) (Command + 80H)
: See “4.3 Transmission errors.”
„ Example: Writing in frequency command value (FA01) (60Hz)
(Computer → inverter)
01 06 FA 01 17 70 E6 C6
(Inverter → computer)
01 06 FA 01 17 70 E6 C6
„ Example: Communication number error
(Computer → inverter)
01 06 FF FF 00 00 89 EE
01 86 02 C3 A1
(Inverter → computer)
Note
▼ The EEPROM life is 10,000 operations.
Do not write in the same parameter that has an EEPROM more than 10,000 times.
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5.2. CRC Generation
“CRC” is a system to check errors in communication frames during data transmission. CRC is
composed of two bytes and has hexadecimal-bit binary values. CRC values are generated by the
transmission side that adds CRC to messages. The receiving side regenerates CRC of received
messages and compares generation results of CRC regeneration with CRC values actually received.
If values do not match, data will be aborted.
„ Flow
A procedure for generating a CRC is:
CRC generation ( )
1, Load a 16–bit register with FFFF hex (all 1’s). Call this
the CRC register.
CRC initial data: FFFF
2. Exclusive OR the first 8–bit byte of the message with the
low–order byte of the 16–bit CRC register, putting the
result in the CRC register.
Byte counter n = 0
Nｏ
Byte counter n < Length
Yes
3. Shift the CRC register one bit to the right (toward the
LSB), zero–filling the MSB. Extract and examine the
LSB.
CRC = (CRC XOR nth send byte
(0 expanded to word (higher 8
bits))
4. (If the LSB was 0): Repeat Step 3 (another shift).
(If the LSB was 1): Exclusive OR the CRC register with
the polynomial value A001 hex (1010 0000 0000 0001).
Bit counter = 0
Nｏ
Bit counter < 8
Yes
5. Repeat Steps 3 and 4 until 8 shifts have been per-
formed. When this is done, a complete 8–bit byte will
have been processed.
C = (Remainder of CRC ÷ 2)
ＣＲＣ >> １
Nｏ
6. Repeat Steps 2 through 5 for the next 8–bit byte of the
message. Continue doing this until all bytes have been
processed.
Is remainder (C)
other than 0?
Yes
CRC＝
(CRC XOR generating polyno-
mial (A001))
7. The final contents of the CRC register is the CRC value.
8. When the CRC is placed into the message, its upper
and lower bytes must be swapped as described below.
Bit counter +1
Byte counter +1
End (Return CRC)
5.3. Error codes
In case of the following errors, the return commands from the inverters are added 80h to the com-
mands received by the inverters. The following error codes are used.
Error Code
01
Description
Command error (Returned when a command other than 03 or 06 is received)
Communication number error (A communication number is not found when Com-
mand 03 or 06 is received)
02
03
Data range error (Data range error when Command 03 or 06 is received
Unable to execute (Command 06 is being received and data cannot be written)
(1) Writing in write-disable-during-operation parameter
04
(2) Writing in parameter that is executing TYP
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6. Inter-drive communication
Inter-drive communication (communication between inverters) are used, for example, when per-
forming speed proportional control or load sharing torque control of two or more inverters without
using a PLC or computer. The command is instructed by the operation from the master inverter’s
panel or analog input, etc.
With the Inter-drive communication function, the master inverter continues to transmit the data se-
lected by the parameters to all the slave inverters on the same network. The master inverter uses
the S command for outputting instructions to the slave inverters, and the slave inverters do not re-
turn the data. (See chapter 4.2 "Command".) Network construction for a simple synchronized op-
eration and speed-proportional operation can be created by this function.
* If the master inverter trips, the slave inverters display the blinking error code “t” and come to a full
stop (0Hz).
Restoring the master inverter that has tripped returns the slave inverters to working order.
* With the communication time-out parameters f803and f804, you can specify what the
slave inverters should do (continue to operate, issue an alarm or trip) if a cable is broken or the
master inverter is turned off during operation.
* To use the inter-drive communication function, select “TOSHIBA Inverter Protocol” (,
=) in the communication protocol selection parameters. “TOSHIBA Inverter Protocol”
(, =) is set for communication protocol selection in Shipment setting. (See “3.
Communication protocol.”)
<Conceptual illustration>
Slave 1 (50Hz)
VF-AS1
Slave 2 (40Hz)
VF-AS1
Slave 3 (30Hz)
VF-AS1
Master (60Hz)
VF-AS1
Analog input
<Notes>
Speed command can be transmitted but the run / stop signal is not issued. Slave station should have an indi-
vidual stop signal or the function to stop the action by the frequency reference. (Setting is necessary for :
Operation start frequency, : Operation start frequency hysteresis .)
For continuing the operation by the last received command value in the case of a communication breakdown,
communications time-out time () to trip the slave inverters. The master inverter does not trip even though
the communication breakdown happens. To trip the master inverter, provide an interlock mechanism by installing
an FL fault relay point or the like from the slave side.
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QWiring (2-wire RS485 communication)
Straight
Straight
Straight
Slave
Slave
Master
Slave
CN1
RXD+/TXD+
RXD-/TXD-
RXD+/TXD+
RXD-/TXD-
RXD+/TXD+
RXD-/TXD-
RXD+/TXD+
RXD-/TXD-
Pin-4
Pin-5
SG
SG
Pin-8
(Pin-3)
SG
SG
Terminating resistance
120Ω-1/2W
* Never use pin-7 (P11).
QWiring (4-wire RS485 communication)）
Straight
Cross
Straight
Master
CN1
Slave
RXA
RXB
TXA
TXB
SG
Slave
RXA
RXB
TXA
TXB
SG
Slave
RXA
RXB
TXA
TXB
SG
Pin-4
Pin-5
Pin-3
Pin-6
RXA
RXB
TXA
TXB
SG
Pin-8
(
Pin-2)
Terminating resistance
120Ω-1/2W
* Never use pin-1 (Open) and pin-7 (P11).
* You do not need to connect the master receive lines (pins 4 and 5) or the slave send lines (pins 3
and 6).
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„ Setting of parameter
●Protocol selection (, ) Shipment setting: 0 (TOSHIBA)
Protocol setting with all inverters (both master and slave inverters) engaged in inter-drive commu-
nication
0: Set the TOSHIBA.
* Inter-drive communication are disabled when the MODBUS-RTU protocol is selected.
* This parameter is validated after resetting the inverter or rebooting the power supply.
● Setting of master and slave inverters for communication between inverters (setting of master and
slave) (, ) ... Shipment setting =
Assign one master inverter in the network. Other inverters should be the slave inverters.
*Specify only one inverter as the master. In case two or more inverters are designated for the
master inverter in the same network, data will collide.
- Setting to the master inverter
Set data desired for sending from the master side to the slave side.
: Master (sends a frequency command)
: Master (sends an output frequency)
: Master (sends a torque command)
: Master (sends an output torque command)
- Setting to the slave inverters
Set the desired action on the slave side that will be needed when the master trips.
0: Slave (issues a 0Hz command if something goes wrong with the master) (when f806and
f826are set to 3and 4, respectively.))
(The output frequency is limited to the lower limit frequency.)
1: Slave (continues operation if something goes wrong with the master)
Note: If the master inverter trips when an output frequency is specified for it, the operation fre-
quency of the slave inverters become 0Hz because tripping of the master inverter causes its
output frequency to drop to 0Hz.
2: Slave (trips for emergency stop if something goes wrong with the master)
The way they make an emergency stop depends on the setting of f603(emergency stop).
*This parameter is validated after resetting the inverter or rebooting the power supply.
• Send waiting time () ... Shipment setting =
- Setting to the master inverter
Specify a waiting time if you want the master to issue commands to slaves with a given delay.
● Frequency setting mode selection 1 (fm0d) ･･･ Shipment setting = 2: RR/S4 input
Designate a target of speed command input for the inverter to the parameter .
- Setting to the master inverter
Select an option other than RS485 communication (fm0d≠5or 6).
- Setting to the slave inverters
Select from between:
fm0d=5: 2-wire RS485 communication input
fm0d=6: 4-wire RS485 communication input
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„ Relating communication parameters
Following parameters should be set or changed if necessary.
• Baud rate (, )... Shipment setting = : 19200bps
Baud rate of all inverters in the network (master and slave) should be same network.
• Parity () ... Shipment setting = : Even parity
Parity of all inverters in the network (master and slave) should be same network.
• Communication time-out time() ... Shipment setting =
Operation is continued by the last received command value in the case of a communication break-
down. To stop the operation of inverter, provide a communication time-out time (ex. = sec-
ond) to the slave inverters. The master inverter does not trip even though the communication break-
down happens. To trip the master inverter, provide an interlock mechanism by installing a FL fault
relay point or the like from the slave side.
• Frequency point selection (, )
Adjusted to the system.
See chapter “6.1 Speed proportional control” for details.
„ Setting example of parameters (2-wire RS485 communication)
Parameters relating to the master side (example)
Parameters relating to the slave side (example)
Master (transmission of output frequency
Slave (If the master inverter trips, all slave inverters stop
operating.)
Selection of communication protocol
(Toshiba inverter protocol)
Communication time-out (ex. 1 second)
Communication baud rate (same to the master side)
Parity (same to the master side)
Terminal block (ex. Driven by F, ST)
( Run and stop of operation is controlled with the frequency
reference value by setting the “run frequency”.)
(%) (100% at FH))
Selection of communication protocol
(Toshiba inverter protocol)
Communication baud rate
(ex. 19200bps)
Parity (even parity)
Example: Panel
Example: RR/S4 input
<During torque control>
Operation panel RS485 (2-wire) communication input
Master (sends a torque command)
?
2-wire RS485
Adjusted to the system Point 1 setting (%)
?
?
?
Ditto
Ditto
Ditto
Point 2 frequency (Hz)
Point 2 setting (%)
Point 2 frequency (Hz)
<During torque control>
RS485 communication input
Load sharing gain input mode selection (ex. Operation
panel input enabled)
Panel load sharing gain (ex. Sharing of half of the com-
mand value)
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6.1. Proportional control of speed
Proportional control of frequency can be performed in two ways: control by selecting frequency
points and control by adjusting the ratio to the maximum frequency. This section explains propor-
tional control of inverters by means of a master inverter (inter-drive communication), although the
AS1 series inverters are ready for proportional control by means of the “S” command even when
they are operated under the control of a computer (computer-linked communication) (in the latter
cases, read the master inverter as the computer).
Proportional control can also be performed in units of Hz using ordinary write commands (W and P
commands) (frequency point selection only). For proportional control in units of %, however, the S
command should be used.
* For proportional control by selecting frequency points, the gradient can be set variously according
to the way each inverter is used. For proportional control by controlling the ratio to the maximum
frequency, settings can be made easily without consideration of the rate at which the frequency is
increased or decreased to the target frequency.
• Data sent by the master inverter to slave inverters in inter-drive communication mode (frequency
command value)
Master side fc×10000
fc(%)＝
(1=0.01%)
Master side FH
* Fractions under 1 (0.01%) are omitted. Therefore, an error of 0.01% is introduced at the maxi-
mum.
• Conversion of the frequency command received by a slave inverter (when the “frequency point
selection” option is not selected)
The value obtained by the following conversion calculation is written in RAM as a frequency com-
mand value.
Slavereceivedata(%)× Slave side FH
fc( Hz ) =
(1=0.01Hz)
10000
* Fractions under 1 (0.01Hz) are omitted. Therefore, an error of 0.01Hz is introduced at the maxi-
mum.
[Diagram of speed proportional control]
<Outside> ← →<Inverter's internal computation>
* fc=frequency reference, FH=maximum frequency
Operation performed by the slave
Operation performed by the
master (or use of S command)
(
)
Point selection
Fc
(Hz)
Points not selected
Hz
Masterfc
MasterFH
%
Slave receive data
Mastersenddata＝
×10000
Data ( Hz )＝
× Slave FH
10000
Point conversion
%
Points selected
(Hz)
(
)
Setting 2 fc
Slave command
()
Setting 1 fc
Point1
()
Point2
()
(%)
Master command
Point2fc − Point1fc
Point2−Point1
Hz
Slavecommand＝
×( Mastercommand－Point1）＋Point1fc
fc
SlaveFH
Hz
%
Data＝
×10000
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• If the “Frequency point selection” function is disabled (=)
The operation frequency (frequency command value) of the inverters are calculated using the fol-
lowing equations, with the received data in the following equation used as the data received from
the master inverter when inverters are operated under the control of a master inverter (inter-drive
communication), or with the received data in the following equation used as the data received from
the computer when inverters are operated under the control of a computer (computer-linked opera-
tion).
Slaverecievedata(%)× Slave side FH
fc( Hz ) =
(Hz)
10000
Example:
Maximum frequency Operation frequency command value
Unit:1=0.01Hz
Master (Fc)
Slave 1
100.00Hz (10000)
90.00Hz (9000)
80.00Hz (8000)
50.00Hz (5000)
45.00Hz (4500)
40.00Hz (4000)
Slave 2
Master side fc ×10000 5000×10000
Master send data：fc(%) =
=
= 5000 = 50%
Master side FH
10000
5000× 9000
Slave1: fc( Hz ) =
= 4500 = 45Hz
10000
5000×8000
Slave2 : fc( Hz ) =
= 4000 = 40Hz
10000
• If the “Frequency point selection” function is enabled (≠)
When inverters are operated under the control of a mater inverter, the operation frequency (fre-
quency command value) of the slave inverters are calculated using the following equations.
When inverters are operated under the control of a computer, read “command from the master
inverter” in the following equations as “command from the computer.”
Point 2 frequency − Point1 frequency
fc( Hz ) =
×（Master command(%) − Point1）＋Point1 frequency
Point 2 − Point1
(Hz)
Example: Units: Frequency unit 1 = 0.01Hz, Point setting unit 1 = 0.01%
Maximum
frequency
()
Point 1
setting
()
－
Point 1 fre- Point 2 set- Point 2
Frequency
(Fc)
quency
ting
frequency
()
－
()
－
()
－
Master (Fc) 100.00Hz
(10000)
50.00Hz
(5000)
Slave 1
100.00Hz
(10000)
0.00%
(0)
0.00Hz
(0)
100.00%
(10000)
90.00Hz
(9000)
45.00Hz
(4500)
Slave 2
100.00Hz(1
0000)
0.00%
(0)
0.0Hz
(0)
100.00%(10
000)
80.00Hz
(8000)
40.00Hz
(4000)
Data sent by the master inverter
Master side fc ×10000 5000×10000
Master send data : fc(%) =
=
= 5000 = 50%
Master side FH
10000
Both slaves 1 and 2: Result of a conversion made on the slave side
Slavereceivedata(%)× Slave side FH 5000×10000
fc( Hz ) =
=
= 5000 = 50Hz
10000
10000
Both slaves 1 and 2: Result of a conversion to % made prior to a conversion to point frequency
fc( Hz )×10000 5000×10000
fc(%) =
=
= 5000 = 50%
Slaveside FH
10000
Results of conversions to point frequency (for the equation used, see above.)
9000 − 0
10000 − 0
8000 − 0
Slave1: fc( Hz ) =
×(5000 − 0 )＋0 = 4500 = 45Hz
Slave2 : fc( Hz ) =
×(5000 − 0)＋0 = 4000 = 40Hz
10000 − 0
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6.2. Transmission format for inter-drive communication
Data type is handled in hexadecimal notation and the transmission characters are treated with the
binary (HEX) code.
The transmission format is basically the same to the case of binary mode. S command is used and
the slave inverters do not return the data.
„ Master inverter → Slave inverter (Binary mode)
Omissible
(3.5bytes
Blank) (2FH)
“/”
INV-NO
1 byte
CMD
1 byte
Communication No.
2 bytes
DATA
2 bytes
SUM
1 byte
(3.5bytes
Blank)
Checksum area
Not omissible
1) INV-NO (1 byte)
: Inverter number
This is always excluded at the master inverter side at time of inter-drive communication, and
can be added when the user utilize this data for the purpose of proportional operation.
(When this code is added, only the inverter concerned will accept the data.)
: Command
2) CMD (1 byte)
53H(“S”) or 73(“s”) command ... command for inter-drive communication
When the master inverter is not tripping, this will be 53H(“S”).
When the master inverter is tripping, this will be 73H(“s”).
3) Communication number (2 bytes)
:
Specify “FA01” for two-wire RS485 communication.
Specify “FA05” for four-wire RS485 communication.
: Data of frequency command value.
4) DATA (2 bytes)
(0000H to FFFFH (no range check))
As for the S command, see section 4.2 “Commands”, and see chapter “6 Inter-drive communication function” for the
communication of inverters.
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7. Communication parameters
The settings of communication-related parameters can be changed from the operation panel and
the external controller (computer). Note that there are two types of parameters: parameters whose
settings take effect immediately after the setting and parameters whose settings do not take effect
until the inverter is turned back on or reset.
Com-
munica-
tion
Default
setting
Title
Function
Adjustment range
Unit
-
Valid
Reference
Section 7.1
Number.
0: 9600bps
Baud rate
(2-wire RS485)
0800
1: 19200bps
2: 38400bps
0: Non parity
1: Even parity
2: Odd parity
1
After reset.
0801
0802
0803
Parity (common)
-
1
0
0
After reset.
Real time
Real time
Section 7.1
Section 7.2
Section 7.3
Inverter number
(common)
Communication
time-out time
(common)
0-247
1
0:OFF
1-100s
1s
2-wire
4-wire
0
1
2
3
4
5
6
7
8
-
-
-
-
t alarm
Err5 trip
-
t alarm
Err5 trip
-
Communication
time-out action
(common)
t alarm
t alarm
t alarm
Err5 trip
Err5 trip
Err5 trip
0804
0805
1
8
Real time
Real time
Section 7.3
Section 7.4
t alarm
Err5 trip
Send waiting time 0.00: Default
(2-wire RS485) 0.01-2.00s
0.01s
0.00
0:Slave (issues a 0Hz command if some-
thing goes wrong with the master)
1:Slave (continues operation if something
goes wrong with the master)
Inverter-to-inverter 2:Slave (trips for emergency stop if
0806
communication (2-
wire RS485)
something goes wrong with the master)
3:Master (sends a frequency command)
4:Master (sends an output frequency)
5.Master (sends a torque command)
6.Master (sends an output torque com-
mand)
-
0
After reset.
Chapter 6
Protocol selection 0: TOSHIBA
0807
0810
-
-
0
0
After reset.
Real time
Chapter 3
(2-wire RS485)
1:MODBUS-RTU
0:Disabled
Frequency point
selection
1:2-wire RS485
2:4-wire RS485
Section 6.1
3:Communication add option
0811
0812
0813
0814
Point 1 setting
0-100%
-
0
Real time
Real time
Real time
Real time
Point 1 frequency 0-Hz
Point 2 setting 0-100%
Point 2 frequency 0-Hz
0.01Hz
-
0.0
Section 6.1
100
60.0
0.01Hz
Communication
speed
(4-wire RS485)
Send waiting time 0.00: Normal
(4-wire RS485) 0.01-2.00s
0: 9600bps
1: 19200bps
2: 38400bps
0820
0825
-
1
After reset.
Real time
Section 7.1
Section 7.4
0.01s
0.00
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Reference
Com-
munica-
tion
Default
setting
Title
Function
Adjustment range
Unit
Valid
Number.
0:Slave (issues a 0Hz command if some-
thing goes wrong with the master)
1:Slave (continues operation if something
goes wrong with the master)
2:Slave (trips for emergency stop if
something goes wrong with the master)
3:Master (sends a frequency command)
4:Master (sends an output frequency)
5.Master (sends a torque command)
6.Master (sends an output torque com-
mand)
Inverter-to-inverter
communication
setting (4-wire
RS485)
0826
-
0
After reset.
Chapter 6
Chapter 3
Protocol selection 0: TOSHIBA
0829
0870
-
-
0
0
After reset.
After reset.
(4-wire RS485)
1: MODBUS-RTU
0: Deselect
Block write data 1
1: Command information 1 (FA00)
2: Command information 2 (FA20)
3: Frequency command (FA01)
4: Terminal board output data
(FA50)
Section
4.1.3
0871
Block write data 2
5: Communication analog data
(FA51)
0: Deselect
0875
0876
0877
0878
Block read data 1
Block read data 2
Block read data 3
Block read data 4
1: Status information (FD01)
2: Output frequency (FD00)
3: Output current (FD03)
4: Output voltage (FD05)
5: Alarm information (FC91)
6: PID feedback value (FD22)
7: Input terminal board monitor (FD06)
8: Output terminal board monitor (FD07)
9: VI/IIterminal board monitor (FE36)
10: RR/S4 terminal board monitor (FE35)
11:RX terminal board monitor (FE37)
12:Input voltage (DC detection) (FD04)
13:Speed feedback frequency (FD16)
14:Torque (FD18)
Section
4.1.3
-
0
After reset.
0879
0880
Block read data 5
15:MY monitor 1 (FE60)
16:MY monitor 2 (FE61)
17:MY monitor 3 (FE62)
18:MY monitor 4 (FE63)
19:Free notes (F880)
Free notes
0-65535
1
0
Real time
Section 7.5
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7.1. Baud rate(, ) , Parity ()
•Communication baud rate and parity bit should be uniform inside the same network.
•This parameter is validated by resetting the power supply.
7.2. Inverter number()
This parameter sets individual numbers with the inverters.
Inverter numbers should not be duplicate inside the same network.
Receiving data will be canceled if inverter numbers specified in individual communication and set by
a parameter do not match.
This parameter is validated from the communication after change
Data range: 0 to 247 (Initial value: 0)
Parameters can be selected between 0 and 247. Note that the communication protocols limit in-
verter numbers as follows:
● TOSHIBA Inverter Protocol ASCII mode: 0 to 99
● TOSHIBA Inverter Protocol Binary mode: 0 to 63
● MODBUS Protocol: 0 to 247 (0: Broadcast communication)
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7.3. Communication time-out time
(
), Communication time-out action (f804
)
The timer function is mainly used to detect a break in a cable during communication, and if no data
is sent to an inverter within the preset time, this function makes the inverter trip () or issue
an alarm (). With the communication time-out action parameter (), you can specify what
the inverter should do (trip, issue an alarm or do nothing) if a time-out occurs.
„ How to set the timer
By default, the communication time-out time parameter () is set to (OFF).
* Timer adjustment range
About 1 sec. (01H) to about 100 sec. (64H) / Timer off (0H)
„ How to specify what an inverter should do if a time-out occurs
By default, the communication time-out action parameter () is set to ( trip) for both
2-wire and 4-wire RS485 communication.
* Selection of time-out action (Range: 0 to 8 ... For details refer to “6. Communication parameters.)
The action of the inverter at the occurrence of a time-out can be selected from among “do noth-
ing,” “trip ()” and “alarm ()” individually for two-wire and four-wire RS485 communica-
tion.
„ How to start the timer
If the timer is set from the operation panel, it will start automatically the instant when communication
is established for the first time after the setting.
If the timer is set from the computer, it will start automatically the instant when communication is
established after the setting.
If the timer setting is stored in the EEPROM, the timer will start when communication is established
for the first time after the power has been turned on.
Note that, if the inverter number does not match or if a format error occurs, preventing the inverter
from returning data, the timer function will assume that no communication has taken place and will
not start.
„ How to disable the timer
To disable the timer, set its parameter to 0.
Ex.: To disable the timer function from the computer (To store the timer setting in the EEPROM)
Computer → Inverter
Inverter → Computer
(W08030)CR
(W08030000)CR
... Sets the timer parameter to 0 to disable it.
„ Timer
Time-out period
The timer measures the time
elapsed before the inverter ac-
knowledges receipt of data after it
acknowledged receipt of the previ-
ous data.
Computer link
PC → INV
PC → INV
INV → PC
Master INV
to Slave
INV
Master INV
to Slave
INV
Inter-drive
communication
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7.4. Send waiting time (, )
Use this function for the following case:
When the data response from the inverter is too quick after the PC had sent the data to the inverter,
PC process cannot get ready to receive the data, or when the USB/RS485, RS485/RS232C con-
verter is used, changeover of sending and receiving data takes much time in the converter process.
Functional specification:
A time for sending data is prolonged longer than the preset time (, ), until the inverter
returns the data to the PC, after it finishes receiving the data (in case of an inter-drive communica-
tion, until the inverter returns the next data to the PC, after it has sent the data.) In case the inverter's
processing capacity requires longer setting time, the value more than this time will be the set value.
(The parameter makes the inverter wait for more than the set time.)
Setting range: to seconds (10ms to 2000ms)
If the set value is , this function becomes invalid and the interval time for sending data is set to the
maximum capacity of the inverter. To obtain a quick response for sending data, set value .
Time elapses more than
transmission waiting time.
Computer link
→
PC INV
→
INV PC
Inter-drive
Master INV
communication
to Slave INV
Master INV to
Slave INV
Time elapses more than the
transmission waiting time.
7.5. Free notes()
This parameter allows you to write any data, e.g., the serial number of each inverter or parameter
information, which does not affect the operation of the inverter.
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8. Commands and monitoring from the computer
Across the network, instructions (commands and frequency) can be sent to each inverter and the
operating status of each inverter can be monitored.
8.1. Communication commands (commands from the computer)
„ Communication command (Communication number: FA00, FA04)
Commands can be executed on inverter frequencies and operation stop through communication.
The VF-AS1 series can enable command and frequency settings through communication irrespec-
tive of settings of the command mode selection () and frequency setting mode selection 1
(). However, if “48 (49): Forced switching from communication to local,” “56 (57): Forced
continuous operation,” or “58 (59): Specified speed operationj” is set by input terminal function se-
lection ( to ), a change to a command other than communication and to a frequency
command is feasible through a contact on the terminal board.
Once the communication command (FA00, FA04) is set to enable communication command priority
and frequency priority, both priorities will be enabled unless OFF is set, power is turned off or is re-
set, or factory default setting () is selected. Emergency stop is always enabled even though
communication command priority is not set.
Table 1 Data construction of communication commands (communication number: FA00, FA04)
bit Specifications
0
1
Remarks
0
1
2
3
4
Preset speed operation Preset speed operation is disabled or preset
frequencies 1
speed operation frequencies (1-15) are set by
specifying bits for preset speed operation frequen-
cies 1-4.
Preset speed operation
frequencies 2
(0000: Preset speed operation OFF,
001-1111: Setting of preset speed operation
frequencies (1-15))
Preset speed operation
frequencies 3
Preset speed operation
frequencies 4
Motor selection (1 or 2)
(THR 2 selection)
PI control
Motor 1
(THR 1)
Motor2
(THR2)
THR1 :
THR2 :
5
6
Normal operation
Accelera-
PI OFF
Acceleration/deceleration
Accelera-
AD1 : ,
pattern selection (1 or 2) tion/deceleration pattern tion/deceleration pattern AD2 : ,
(AD2 selection)
DC braking
1 (AD1)
OFF
2 (AD2)
Forced DC braking
Jog run
7
8
9
Jog run
OFF
Forward/reverse run se-
lection
Forward run
Reverse run
10 Run/stop
Stop
Standby
OFF
Run
Coast stop
Emergency stop
Reset
11 Coast stop command
12 Emergency stop
13 Fault reset
Always enabled, “E” trip
No data is returned from the inverter.
Enabled regardless of the set-
ting of
OFF
14 Frequency priority selec-
tion
OFF
Enabled
15 Command priority selec-
tion
OFF
Enabled
Enabled regardless of the set-
ting of
Note: The acceleration/deceleration change command OR with Bit 8 and 9 of Communication num-
ber FA20 and FA22.
Ex.: Forward run command used in two-wire RS485 communication (PFA008400) CR
1 is specified for bit 15 (communication command: enabled) and bit 10 (operation command).
BIT15
BIT0
FA00:
1
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
8
4
0
0
Ex.: Reverse run command used in two-wire RS485 communication (PFA008600) CR, (PFA00C600) CR
8600H : To disable frequency instructions from the computer
C600H : To enable also frequency instructions from the computer
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„ Communication command2 (Communication Number : FA20, FA22)
This command is enabled only when the communication command is enabled. Set Bit 15 of Com-
munication Command 1 (communication Number: FA00, FA04) to “1” (enable). When enabling the
communication command by Communication Command 1, commands by communication can be
given the priority irrespective of the setting of the command mode selection parameter ().
However, if “48 (49): Forced switching from communication to local,” “56 (57): Forced continuous
operation,” or “58 (59): Specified speed operationj” is set by input terminal function selection
( to ), the enabled command and frequency will be given the priority.
Once enabled, this setting will be enabled till disable is set (0 setting), power is turned off or is reset,
or factory default setting () is selected.
Table 2 Data construction of communication command 2 (FA20, FA22)
Bit
Function
0
1
Remarks
0
Control switching
electric power quantity
reset
Speed control
Torque control
Electric power quantity
(FE76, FE77) reset
1
ＯＦＦ
Reset
2
3
4
5
6
(Reserved)
－
Normal
Normal
－
Forcibly braked
Enabled
Brake released
Brake released
Braking request (BC)
Preliminary excitation
Brake release (B)
Braking answer (BA)
Brake applied
Brake applied
Maximum
deceleration
7
8
Normal
Enabled
forced stop
Acceleration/deceleration
pattern selection 1
Select Acceleration/ de-
celeration 1 - 4 by combi-
nation of two bits
00: Acceleration/deceleration 1
01: Acceleration/deceleration 2
10: Acceleration/deceleration 3
11: Acceleration/deceleration 4
AD1: ,
Acceleration/deceleration
pattern selection 2
AD2: ,
AD3: ,
AD4: ,
9
00: V/F 1
01: V/F 2
10: V/F 3
11: V/F 4
10
11
12
13
V/Fswitching 1
Select V/F 1 - 4 by combi-
nation of two bits
V/Fswitching 2
00: Torque limit 1
01: Torque limit 2
10: Torque limit 3
11: Torque limit 4
Torque limit switching 1
Torque limit switching 2
Select torque limit 1 - 4 by
combination of two bits
Gain 1: ,
Gain 2: ,
14
15
Speed gain 1/2
(Reserved)
Gain 1
Gain 2
－
－
Note: The acceleration/deceleration change command ORs with Bit 6 of Communication number
FA00 and FA04.
Set Bit 6 of FA00 and FA04 to “0” and use FA20 and FA22 when changing acceleration/deceleration
in four types. Acceleration/deceleration 4 will be set when both Bit 8 of Communication number
FA20 and FA22 (or Bit 6 of Communication number FA00 and FA04) and Bit 9 of Communication
number FA20 and FA22 are set.
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„ Frequency setting from the computer “Communication Number: FA01, FA05”
Setting range: 0 to maximum frequency (fh)
This frequency command is enabled only when the frequency command by communication is en-
abled. To make frequency commands from the computer valid, set the frequency setting mode se-
lection parameter (fmod) to RS485 communication (communication No. 0004: 5 (2-wire RS485
communication input) or 6 (4-wire RS485 communication input) or select the “Command priority”
option (bit 14 of FA00 and FA04: 1 (enabled)). In this case, frequency commands by communica-
tion will be enabled independent of fmodsetting.
However, enabled commands and frequencies are given the priority if “48 (49): Forced switching
from communication to local,” “56 (57): Forced continuous operation,” or “58 (59): Specified speed
operation” is set by input terminal function selection (f11oto f118).
Once enabled, this frequency setting will be enabled till disable is set (0 setting), power is turned off
or is reset, or factory default setting (typ) is selected.
Set a frequency by communication hexadecimal in Communication Number FA01, FA05.
(1=0.01Hz (unit))
Example: Operation frequency 80Hz command by 2-wire RS485 communication (PFA011F40) CR
80Hz=80÷0.01=8000=1F40H
„ Torque command setting from the computer “2-wire RS485 communication: FA30,
4-wire RS485 communication: FA32
This section explains how to set a torque command value for inverters. The torque command value
set here takes effect if torque commands from the computer are valid when the inverters are in tor-
que control mode (in cases where torque control is selected with the terminal board or with a com-
munication command when ( is set to 4 or 8).
To make torque commands from the computer valid, set the torque command selection parameter
(communication No. 0420) to 5 (2-wire RS485 communication input) or 6 (4-wire RS485
communication input). Once torque commands from the computer have been set, they remain valid
until they are changed, the inverters is turned off or reset, or the parameter for returning set-
tings to their defaults is selected. (The settings of FA30 and FA32 are not stored in EEPROM.
Therefore, they are cleared when the inverter is turned off or reset.)
When setting a torque for torque commands from the computer, specify a torque in hexadecimal
(unit: 1=0.01%, two-wire RS485 communication: FA30 or four-wire RS485 communication: FA32).
Example: 50% torque command (PFA321388)
50%=50÷0.01=5000=1388H
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„ Terminal board output data (FA50)
The output terminal board on each inverter can be directly controlled with the computer.
To use this function, select functions 92 to 105 in advance for the output terminal function selection
parameters f130to f138, f168andf169. If bit 0 through bit 6 of terminal board
output data (FA50) are set with the computer, data specified (0 or 1) can be sent to any output ter-
minal.
Data composition of terminal board output data (FA50)
Bit
0
Output terminal function
Specified data output 1
0
1
OFF
ON
(Output terminal no.: 92, 93)
Specified data output 2
(Output terminal no.: 94, 95)
Specified data output 3
(Output terminal no.: 96, 97)
Specified data output 4
(Output terminal no.: 98, 99)
Specified data output 5
(Output terminal no.: 100, 101)
Specified data output 6
(Output terminal no.: 102, 103)
Specified data output 7
(Output terminal no.: 104, 105)
－
1
OFF
OFF
OFF
OFF
OFF
OFF
－
ON
ON
ON
ON
ON
ON
－
2
3
4
5
6
7 to 15
Example of use: To control only the OUT1 terminal with the computer
To turn on the OUT1 terminal, set the output terminal function selection 1 parameter
(f130) to 92 (output terminal function selection 1 (positive logic)) and specify 0001H for
FA50.
FA50:
BIT15
BIT0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
„ FM analog output (FA51)
The FM analog terminal on each inverter can be directly controlled with the computer.
To use this function, set the FM terminal meter selection parameter (fmsl) to 31 (communication
data output).
This makes it possible to send out the data specified as FM analog output data (FA51) through the
FM analog output terminal. Data can be adjusted in a range of 0 to 2047 (resolution of 11 bits).
For details, refer to “Meter setting and adjustment” of the instruction manual included with the
inverter.
„ AM analog output (FA52)
The AM analog terminal on each inverter can be directly controlled with the computer.
To use this function, set the AM terminal meter selection parameter (amsl) to 31 (communication
data output).
This makes it possible to send out the data specified as AM analog output data (FA52) through the
AM analog output terminal. Data can be adjusted in a range of 0 to 2047 (resolution of 11 bits).
For details, refer to “Meter setting and adjustment” of the instruction manual included with the
inverter.
48
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8.2.Monitoring from the computer
This section explains how to monitor the operating status of the inverter from the computer.
„ Monitoring of the output frequency from the computer (FD00, FE00)
Output frequency (current status): “Communication Number FD00” (minimum unit: 0.01Hz)
Output frequency (status immediately before the occurrence of a trip): “Communication Number
FE00” (minimum unit: 0.01Hz)
The current output frequency is read out in hexadecimal in units of 0.01Hz. For example, if the out-
put frequency is 80Hz, 1F40H (hexadecimal number) is read out. Since the minimum unit is 0.01Hz,
1F40H (hexadecimal number) = 8000 (decimal number) x 0.01 = 80 (Hz)
Example: Monitoring of the output frequency (operation frequency: 50Hz) ・・・ (1F40H=8000d,
8000×0.1=80Hz)
Computer→Inverter Inverter→Computer
(RFD00)CR
(RFD001F40)CR
The following items are also calculated in the same way.
• FD22 (PID feedback value).................................Unit: 0.01Hz
• FD16 (speed feedback) ......................................Unit: 0.01Hz
• FD29 (input power) .............................................Unit: 0.01kW
• FD30 (output power) ...........................................Unit: 0.01kW
„ Monitoring of the output current with the computer (FD03, FE03)
Output current (current status): “Communication Number FD03” (minimum unit: 0.01Hz)
Output current (status immediately before the occurrence of a trip): “Communication Number FE03”
(minimum unit: 0.01Hz)
The current output current is read out in hexadecimal in units of 0.01%. For example, if the output
current of an inverter with a current rating of 4.8A is 2.4A (50%), 1388H (hexadecimal number) is
read out. Since the minimum unit is 0.01%, 1388H (hexadecimal number) = 5000 (decimal number)
x 0.01 = 50 (%)
Example: Monitoring of the output current (output current: 90%) ・ ・ ・ (2328H=9000d,
9000×0.01=90%)
Computer→Inverter Inverter→Computer
(FRD03)CR
(RFD032328)CR
The following items are also calculated in the same way.
• FD05 (output voltage) .........................................Unit: 0.01% (V)
• FD04 (DC voltage) ..............................................Unit: 0.01% (V)
• FD18 (torque)......................................................Unit: 0.01% (N·m) *
* If data on the motor connected to the inverter is entered with parameters f405to f415,
100% of the monitored torque closely agrees with the rated torque of the motor.
49
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„ Input terminal board status (FD06, FE06)
Input terminal board status (current status): “Communication Number FD06”
Input terminal board status (status immediately before the occurrence of a trip): “Communication
Number FE06”
Using terminal function selection parameters, functions can be assigned individually to the termi-
nals on the input terminal board.
If a terminal function selection parameter is set to 0 (no function assigned), turning on or off the cor-
responding terminal does not affect the operation of the inverter, so that you can use the terminal as
you choose.
When using a terminal as a monitoring terminal, check beforehand the function assigned to each
terminal.
Data composition of input terminal board status (FD06, FE06)
Bit
0
Terminal name
Function (parameter title)
0
1
F
Input terminal function selection 1 (f111)
Input terminal function selection 2 (f112)
Input terminal function selection 3 (f113)
Input terminal function selection 4 (f114)
Input terminal function selection 5 (f115)
Input terminal function selection 6 (f116)
Input terminal function selection 7 (f117)
Input terminal function selection 8 (f118)
Input terminal function selection 9 (f119)
Input terminal function selection 10 (f120)
Input terminal function selection 11 (f121)
Input terminal function selection 12 (f122)
Input terminal function selection 13 (f123)
Input terminal function selection 14 (f124)
Input terminal function selection 15 (f125)
Input terminal function selection 16 (f126)
1
R
2
ST
RES
S1
S2
S3
S4
L1
L2
L3
L4
L5
L6
L7
L8
3
4
5
6
7
OFF
ON
8
9
10
11
12
13
14
15
Example: Data set for FE06 when the F and S1 terminals are ON = 0011H
BIT15 bit0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
FE06:
0
0
9
0
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„ Output terminal board status (FD07, FE07)
Output terminal board status (current status): “Communication Number FD07”
Output terminal board status (status immediately before the occurrence of a trip): “Communication
Number FE07”
Using terminal function selection parameters, functions can be assigned individually to the termi-
nals on the output terminal board.
When using a terminal as a monitoring terminal, check beforehand the function assigned to each
terminal.
Data composition of output terminal board status (FD07, FE07)
Bit
Terminal name
Function (parameter title)
Output terminal function selection 1 (f130)
Output terminal function selection 2 (f131)
Output terminal function selection 3 (f132)
Output terminal function selection 4 (f133)
Output terminal function selection 5 (f134)
Output terminal function selection 6 (f135)
Output terminal function selection 7 (f136)
Output terminal function selection 8 (f137)
Output terminal function selection 9 (f138)
Output terminal function selection 10 (f168)
Output terminal function selection 11 (f169)
－
0
1
0
OUT1
OUT2
FL
1
2
3
OUT3
OUT4
R1
4
5
OFF
ON
6
OUT5
OUT6
R2
7
8
9
R3
10
R4
11 to 15
－
－
－
Example: Data set for FE07 when both the OUT1 and OUT2 terminals are ON = 0003H
BIT15 bit0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
FE07:
0
0
3
0
„ Monitoring of the analog input with the computer (FE35 to FE39)
RR terminal board monitor: “Communication Number FE35”
VI/II terminal board monitor: “Communication Number FE36”
RX terminal board monitor: “Communication Number FE37”
AI1 terminal board monitor : “Communication Number FE38”
AI2 terminal board monitor: “Communication Number FE39”
These monitors can also be used as A/D converters irrespective of the inverter’s control.
RR terminal board monitor, VI/II terminal board monitor and AI2 terminal board monitor are capable
of reading the data from external devices in a range of 0.01 to 100.00% (unsigned data: 0H to
2710H).
RX terminal board monitor and AI1 terminal board monitor are capable of reading the data from ex-
ternal devices in a range of -100.00 to +100.00% (signed data: D8F0H to 2710H).
If analog input mode is selected with the frequency setting mode selection parameter, however,
keep in mind that any data entered via an analog terminal is regarded as a frequency command.
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„ Inverter operating status 1 (FD01, FE01)
Inverter status 1 (current status): Communication Number FD01
Inverter status 1 (status immediately before the occurrence of a trip): Communication Number FE01
Bit Specifications
0
1
Remarks
0
1
Failure FL
Failure
No output
Not tripped
Output in progress
Tripped
Trip statuses include
and trip retention status.
2
3
4
Alarm
No alarm
-
Alarm issued
Reserved
-
Motor section (1 or 2) Motor 1 (THR 1)
(THR 2 selection)
Motor 2 (THR 2)
5
6
PI control OFF
PI control
permitted
PI control
prohibited
Accelera-
tion/deceleration
Acceleration/
deceleration
Acceleration/
deceleration pat- AD2 :,
AD1 :,
pattern selection (1 or pattern 1 (AD 1)
2)
tern 2 (AD 2)
7
8
9
DC braking
OFF
OFF
Forced DC braking
Jog run
Jog run
Forward/reverse run
Forward run
Stop
Reverse run
Run
10 Run/stop
11 Coast stop (ST=OFF)
12 Emergency stop
ST=ON
ST=OFF
Not emergency
stop status
Start-up process
Emergency stop
status
13 Standby ST=ON
Standby
Standby: Initialization completed,
not failure stop status, not alarm
stop status (MOFF, LL forced
stop or forced stop due to a
momentary
power
failure),
ST=ON, and RUN=ON
14 Standby
Start-up process
Standby
Standby: Initialization completed,
not failure stop status, and not
alarm stop status (MOFF, LL
forced stop or forced stop due to
a momentary power failure)
15 Reserved
-
-
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„ Inverter operating status 2 (FD42, FE42)
Inverter status 2 (current status): Communication Number FD42
Inverter status 2 (status immediately before the occurrence of a trip): Communication Number FE42
Bit
0
Function
0
1
Remarks
Control mode switching
Speed control
(Simple posi-
tioning)
Torque control
1
Electric Power Counting
(FE76,FE77) status
(Reserved)
Counting
Resetting
2
3
4
5
6
7
-
-
(Reserved)
-
-
Preliminary excitation
(Reserved)
Normal
Operation
-
-
(Reserved)
-
-
Maximum deceleration forced
stop
Normal
Operation
8
9
Acceleration/deceleration
pattern selection1
Acceleration/deceleration
00:Acceleration/deceleration 1 Acceleration/ decelera-
01:Acceleration/deceleration 2 tion 1 - 4 can be specified
10:Acceleration/deceleration 3 by combination of two
11:Acceleration/deceleration 4 bits
pattern selection2
V/Fswitching 1
Select V/F 1 - 4 by com-
bination of two bits
00: V/F 1
01: V/F 2
10: V/F 3
11: V/F 4
10
11
V/Fswitching 2
Torque limit switching 1
Torque limit switching 2
00: Torque limit 1
01: Torque limit 2
10: Torque limit 3
11: Torque limit 4
Gain 1
Select torque limit 1 - 4
by combination of two
bits
12
13
Speed gain 1/2
(Reserved)
Gain 2
-
Gain 1: ,
Gain 2: ,
14
15
-
„ Inverter operating status 3 (FD49, FE49)
Inverter status 3 (current status): Communication Number FD49
Inverter status 3 (current status): Communication Number FE49
Bit
Function
0
1
Remarks
0 to 11 (Reserved)
-
-
Not achieved
Achieved
Related parameters
12
Acceleration/deceleration
completion (RCH)
f102
Not achieved
-
Achieved
-
Related parameters
13
Specified speed reach (RCHF)
f101, f102
14 to 15 (Reserved)
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„ Inverter operating command mode status (FD45, FE45)
The monitor of the command mode that the present condition is enabled
Command mode status (current status): “Communication Number FD45”
Command mode status (status immediately before the occurrence of a trip): “Communication Num-
ber
Data
Enabled command
0
1
2
3
4
Terminal input enabled
Operation panel input enabled
Operation panel RS485 (2-wire) communication input
Internal RS485 (4-wire) communication input
Communication option input
„ Inverter operating frequency mode status (FD46, FE46)
The monitor of the frequency command mode that the present condition is enabled
Note that Preset speed operation frequencies is given the priority independent of the frequency
mode, in which case this monitor will be disabled, in case Preset speed operation frequencies is
selected.
Frequncy mode status (current status): Communication Number FD46
Frequncy mode status (status immediately before the occurrence of a trip): Communication
Number FE46
Data
1
Enabled frequency
VI/II input
2
RR/S4 input
3
RX input
4
Operation panel input enabled
Operation panel RS485 (2-wire) communication input
Internal RS485 (4-wire) communication input
Communication option input
Optional AI1
5
6
7
8
9
Optional AI2
10
11
12
13
255
UP/DOWN frequency
RP pulse input
High-speed pulse input
Binary/BCD input
Preset speed operation
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„ Alarm information monitor (FC91)
Remarks
Bit
Specifications
Over-current alarm
0
1
(Code displayed on the panel)
0
1
Normal
Normal
Normal
Normal
Normal
Normal
-
Alarming
Alarming
Alarming
Alarming
Alarming
Alarming
-
flickering
flickering
Inverter overload alarm
Motor overload alarm
Overheat alarm
flickering
flickering
flickering
2
3
4
Overvoltage alarm
Main circuit undervoltage alarm
(Reserved)
5
-
-
-
-
-
-
6
7
Low current alarm
Normal
Normal
Normal
Normal
Alarming
Alarming
Alarming
Alarming
8
Over-torque alarm
Braking resistor overload alarm
9
Cumulative operation hours
alarm
10
11 (Reserved)
12 (Reserved)
13 (Reserved)
-
-
-
-
-
-
-
-
-
-
At the time of the instant black-
Decelerating, Related: setting
stopping
Decelerating, Related: setting
stopping
14
out, Forced deceleration/stop
An automatic stop during the
lower limit frequency continu-
ance
15
-
„ Cumulative operation time alarm monitor (FE79)
Bit
0
Specifications
Fan life alarm
0
1
Remarks
Normal
Normal
Normal
Normal
-
Alarm issued
Alarm issued
Alarm issued
Alarm issued
-
-
-
-
-
-
1
Circuit board life alarm
Main-circuit capacitor life alarm
User set alarm
2
3
4-15 (Reserved)
55
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„ Trip code monitor (current status: FC90: historic records: FE10 to FE13)
Data
Data
(hexadeci-
mal number)
(decimal
number)
Code
Description
0
1
0
No error
nerr
oc1
1
2
3
4
5
6
7
8
9
Over-current during acceleration
Over-current during deceleration
Over-current during constant speed operation
Over-current in load at startup
U-phase arm overcurrent
2
oc2
3
oc3
4
ocl
5
ocai
oca2
oca3
ephi
epho
op1
6
V-phase arm overcurrent
7
W-phase arm overcurrent
8
Input phase failure
9
Output phase failure
A
10 Overvoltage during acceleration
11 Overvoltage during deceleration
12 Overvoltage during constant speed operation
13 Over-LOAD in inverter
14 Over-LOAD in motor
15 Dynamic braking resistor overload
16 Overheat
B
op2
C
op3
D
ol1
E
ol2
F
olr
10
11
12
13
14
15
16
17
18
19
oh
17 Emergency stop
e
18 EEPROM fault
eep1
eep2
eep3
err2
err3
err4
err5
err6
19 Initial read error
20 Initial read error
21 Inverter RAM fault
22 Inverter ROM fault
23 CPU fault
24 Communication time-out error
25 Gate array fault
1A
26 Output current detector error
err7
1B
1D
1E
20
21
22
24
25
26
27
28
29
2A
2B
2C
2D
2E
2F
32
33
34
35
36
37
27 Option error
err8
uc
29 Low current operation status
30 Undervoltage (main circuit)
32 Over-torque trip
up1
ot
33 Ground fault trip
ef1
34 Ground fault trip
ef2
36 Dynamic braking abnormal element
37 Overcurrent during acceleration (element overheat)
38 Overcurrent during deceleration (element overheat)
ocr
oc1p
oc2p
oc3p
etn
39 Overcurrent during fixed speed operation (element overheat)
40 Tuning error
41 Inverter type error
etyp
e-10
e-11
e-12
e-13
oh2
42 Analog input terminal overvoltage
43 Abnormal brake sequence
44 Disconnection of encoder
45 Speed error
46 External thermal
47 Step-out (for PM motors only)
50 Terminal input error
sout
e-18
e-19
e-20
e-21
e-22
e-23
51 Abnormal CPU2 communication
52 V/f control error
53 CPU1 fault
54 Abnormal logic input voltage
55 Option 1 error
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38
39
3A
54
55
56
56 Option 2 error
e-24
e-25
e-26
etn1
etn2
etn3
57 Stop position retaining error
58 CPU2 fault
84 tuning error
85 tuning error
86 Motor constant setting error
„ Inverter model (capacity) code (FB05)
Data
Model
Data
(decimal number)
(hexadecimal number)
VFAS1-2004P
VFAS1-2007P
VFAS1-2015P
VFAS1-2022P
VFAS1-2037P
VFAS1-2055P
VFAS1-2075P
VFAS1-2110P
VFAS1-2150P
VFAS1-2185P
VFAS1-2200P
VFAS1-2300P
VFAS1-2370P
VFAS1-2450P
VFAS1-2550P
VFAS1-2750P
VFAS1-4007P
VFAS1-4015P
VFAS1-4022P
VFAS1-4037P
VFAS1-4055P
VFAS1-4075P
VFAS1-4110P
VFAS1-4150P
VFAS1-4185P
VFAS1-4220P
VFAS1-4300P
VFAS1-4370P
VFAS1-4450P
VFAS1-4550P
VFAS1-4750P
VFAS1-4900P
VFAS1-4110KP
VFAS1-4132KP
VFAS1-4160KP
VFAS1-4200KP
VFAS1-4220KP
VFAS1-4280KP
VFAS1-4355KP
VFAS1-4400KP
VFAS1-4500KP
2
2
4
4
6
6
7
7
9
9
A
10
11
108
109
110
111
112
113
114
115
116
36
38
39
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
60
62
63
64
B
6C
6D
6E
6F
70
71
72
73
74
24
26
27
29
2A
2B
2C
2D
2E
2F
30
31
32
33
34
35
36
37
38
39
3A
3C
3E
3F
40
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8.3.Utilizing panel (LEDs and keys) by communication
The VF-AS1 can display data that is not related to the inverters through an external controller or
other means. Input by key operations can also be executed. The use of inverter resources re-
duces the cost for the entire system.
8.3.1. LED setting by communication
Desired LED information can be displayed by communication.
<How to Set>
Set the standard monitor display selection parameter to “communication LED setting
(=).”
When in the standard monitor mode status, LED information is displayed according to the setting of
Communication Number FA65. (Set to Communication Number FA65 = 1 and initial data “”
in shipment setting)
In case of an alarm while setting communication LEDs, the alarm display will alternately display
specified LED data and alarm message.
For example, if an over-current alarm (alarm display “”) occurs while “.” is displayed by this
function, “” and “.” will be displayed alternately.
Commu-
nication
Number.
FA65
Shipment
setting
Parameter Name
Range
Select display by communication
0: Numeric data (FA66, FA67, FA68)
1
1: ASCII data 1 (FA70, FA71, FA72, FA73,
FA74)
2: ASCII data 2 (FA75, FA76, FA77, FA78,
FA79)
FA66
FA67
Numeric display data
(Enabled if FA65=0)
Decimal point position
(Enabled if FA65=0)
0-9999
0
0
0: No decimal point (xxxx)
1: First digit below decimal point (xxx.x)
2: Second digit below decimal point (xx.xx)
0:Hz off, % off, 1:Hz on, % off
2:Hz off, % on, 3:Hz on, % on
0 – 127 (0 – 7FH)
FA68
FA70
LED data 0 for unit
(Enabled if FA65=0)
ASCII display data 1, first digit from
left
0
64H (’d’)
41H (’A’)
74H (’t’)
41H (’A’)
(See ASCII LED display code chart)
(Enabled if FA65=1)
ASCII display data 1, second digit
from left
(Enabled if FA65=1)
ASCII display data 1, third digit from
left
FA71
FA72
FA73
0 – 256 (0 – FFH)
(See ASCII LED display code chart)
0 – 256 (0 – FFH)
(See ASCII LED display code chart)
(Enabled if FA65=1)
ASCII display data 1, fourth digit from 0 – 127 (0 – 7FH)
left
(See ASCII LED display code chart)
(Enabled if FA65=1)
LED data 1 for unit
(Enabled if FA65=1)
ASCII display data 2, first digit from
left
FA74
FA75
0:Hz off, % off, 1:Hz on, % off
2:Hz off, % on, 3:Hz on, % on
0 – 127 (0 – 7FH)
0
30H (’0’)
(See ASCII LED display code chart)
(Enabled if FA65=2)
ASCII display data 2, second digit
from left
(Enabled if FA65=2)
ASCII display data 2, third digit from
left
(Enabled if FA65=2)
ASCII display data 2, fourth digit from 0 – 127 (0 – 7FH)
left
FA76
FA77
FA78
FA79
0 – 256 (0 – FFH)
(See ASCII LED display code chart)
30H (’0’)
30H (’0’)
30H (’0’)
0
0 – 256 (0 – FFH)
(See ASCII LED display code chart))
(See ASCII LED display code chart)
(Enabled if FA65=2)
LED data 2 for unit
(Enabled if FA65=2)
0:Hz off, % off, 1:Hz on, % off
2:Hz off, % on, 3:Hz on, % on
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„ Block Communication Function for LED Display
To display LED data for ASCII display that is synchronized to each digit, set data for each digit and
validate this set data by display selection by communication (Communication Number FA65).
Synchronization can also be achieved by batch writing LED data parameters after changing the fol-
lowing block communication mode parameters and by sending data by block communication.
Writing in the block communication function will be writing in the RAM only due to the EEPROM life
for write operations. The LED data will reset to the initial value ““ when the power is turned
off, in failure resetting or when standard shipment settings are set.
„
Parameter Setting
“Block communication mode (Communication Number FA80)”
Setting range: 0, 1 (Initial value 0)
0: Block communication parameters ( - ) is used
1: LED display ASCII data is used (When writing, ASCII display data 1 [Communication Num-
ber FA70 - FA74], when reading, LED data displayed before change)
*To validate LED data set by using LED display block communication, set standard monitor display
selection to “communication LED select ( = ) and display selection by communication
to “ASCII data 1 (Communication Number FA65).
„
Format
The format is the same as that used in the usual block communication mode. (For the detail infor-
mation, see “4.1.3 Block communication transmission format”) The block communication pa-
rameters ( - ) will become invalid. Write data will become ASCII display data 1
(Communication Number :FA70 - FA74) fixed. LED display data that is actually being output will be
read during reading. The specification range for write operations is 0 to 5.
„
Example
Communication LED selection ( = ) for standard monitor display selection.
ASCII data 1 (Communication Number:FA65 = 1) for display selection by communication.
LED display ASCII data (Communication Number: FA80 = 1) for the block communication mode.
Current LED display status is display of initial value “”
PC → Inverter: 2F580505003000310032003300035A・・・“” display command
Inverter → PC: 2F59050000640041007400410000E7 ・・・ “” displayed before change
59
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■ ASCII LED display data code (00H-1FH are blank.)
Hex Code Display Char. Hex Code
Display
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
Char. Hex Code
Display
Char. Hex Code
Display
Char.
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H
0AH
0BH
0CH
0DH
0EH
0FH
10H
11H
12H
13H
14H
15H
16H
17H
18H
19H
1AH
1BH
1CH
1DH
1EH
1FH
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
20H
21H
22H
23H
24H
25H
26H
27H
28H
29H
2AH
2BH
2CH
2DH
2EH
2FH
30H
31HT
32H
33H
34H
35H
36H
37H
38H
39H
3AH
3BH
3CH
3DH
3EH
3FH
SP
40H
41H
42H
43H
44H
45H
46H
47H
48H
49H
4AH
4BH
4CH
4DH
4EH
4FH
50H
51H
52H
53H
54H
55H
56H
57H
58H
59H
5AH
5BH
5CH
5DH
5EH
5FH
BLANK
@
A
B
C
D
E
F
G
H
I
60H
61H
62H
63H
64H
65H
66H
67H
68H
69H
6AH
6BH
6CH
6DH
6EH
6FH
70H
71H
72H
73H
74H
75H
76H
77H
78H
79H
7AH
7BH
7CH
7DH
7EH
7FH
BLANK
`
a
b
c
d
e
f
!
#
$
%
&
g
h
i
(
)
BLANK
BLANK
DGP
*
J
j
+
,
K
L
k
l
-
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
[
m
n
o
p
q
r
DGP
.
/
0
1
2
3
4
5
6
7
8
9
:
s
t
u
v
w
x
y
z
{
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
BLANK
;
<
=
>
?
＼
]
|
}
BLANK
BLANK
^
BLANK
BLANK
Æ
BLANK
_
*Dots to show decimal points and other uses can be added by setting (80H) Bit 7 (highest bit).
Example: “0.” to display “60.0” can be added by “30H + 80H = B0H.”
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8.3.2.Key utilization by communication
The VF-AS1 can use the panel keys on the inverters through external communication.
„ Key Monitoring Procedure
Set panel key selection (Communication Number: FA10) to “1” to set the external key mode. How-
ever, if communication duration is less than 1sec to avoid an inverter operation shutdown in com-
munication disruption, communication must always be maintained, such as monitoring key data and
LED data to automatically reset inverter operations to inverter key operation (FA10 = 0). Set to the
external communication key mode (FA10 = 1) to disable the key function of the inverters so that in-
verter operation will not be affected by pressing of the keys on the inverters. By monitoring key in-
formation, which is input by the keys on the inverters in this condition, through inverter key data
(Communication Number; FC01), the keys on the inverters can be operated through a controller and
other devices.
* When the key mode is the external key mode, key operation as an inverter function is disabled and
the inverters cannot be stopped by pressing the STOP key to stop inverter operation. Enable
emergency stop through an external terminal or other device when an inverter stop is desired.
Panel Key Selection (Communication Number:FA10)
The panel key selection parameter (Communication Number; FA10) discriminates which keys are to be used, panel keys
on the inverters or keys sent by external communication, as panel keys used in panel processing of the inverters.
Communication No.：FC01
Panel key data of inverters
FA10=”0”
Communication No.：FC00
Key data for inverter
control panel processing
Communication No.：FA11
FA10=”1”
External communication
key data
Keys on inverters enabled (Communication Number; FA10 = 0):
Key data: Data of keys on inverters (Communication Number : FC01)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
EASY
KPP
ENT
MODE
DOWN
UP
STOP
RUN
“KPP” for Bit 7 indicates that panel keys are mounted on the inverters.
External keys enabled (Communication Number; FA10 = 1):
Key data: External key data (Communication Number: FA11)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
-
EASY
ENT
MODE
DOWN
UP
STOP
RUN
Key monitoring (Communication Number : FC00):
Information of the enabled keys on the inverters can be monitored.
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
KPP
EASY
ENT
MODE
DOWN
UP
STOP
RUN
“KPP” for Bit 7 indicates that panel keys are enabled on the inverters.
61
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9.Parameter data
Explanation of parameters for VF-AS1 series is described here. For communication purposes, see
the parameter list on inverter's instruction manual regarding the communication number, adjustment
range and so forth.
„ Referring to the parameter list
<Example of excerpts from the inverter’s instruction manual>
Minimum set-
ting unit
Refer-
ence
Communi-
Default
setting
Write during
running
Title
Function
Adjustment range
(Panel/Communi
cation)
cation No.
auh
au1
-
History function
1/1
1/1
-
-
5.1
5.2
0000
Automatic accelera- 0:Deselect
0
Disabled
tion/deceleration
1:Automatic setting
2:Automatic setting (during
acceleration only)
0:Deselect
1:Automatic torque boost +
auto-tuning 1
au2
acc
0001
Automatic torque
boost
1/1
-
Disabled
Enabled
5.3
5.2
：
：
：
：
Acceleration time
1
0.1~6000 sec.
0.1/0.1 *2
*1
0009
0007
0: -
1:50 Hz default setting
2:60 Hz default setting
3:Factory default setting
：
10:Acceleration/deceleration
time setting 0.01
sec.~600.0 sec.
Factory default
setting
typ
1/1
5.20
-
Disabled
11:Acceleration/deceleration
time setting 0.1
sec.~6000sec.
：
*1: Default values vary depending on the capacity.
*2: Changing the parameter enables to set to 0.01 sec. (adjustment range: 0.01~600.0 sec.).
- The summary of parameter list relating to the communication is as follows.
(1) “Title” means the display on the inverter panel.
(2) “Communication number” is affixed to each parameter that is necessary for designating the parameter for com-
munication.
(3) "Adjustment range" means a data range adjustable for a parameter, and the data cannot be written outside the
range. The data have been expressed in the decimal notation. For writing the data through the communication
function, take the minimum setting unit into consideration, and use hexadecimal system.
(4) "Minimum setup unit" is the unit of a single data (when the minimum unit is "-", 1 is equal to 1).
For example, the "minimum setup unit" of acceleration time () is 0.01, and 1 is equal to 0.01s. For setting a
data to 10 seconds, transmit 03E8h [10÷0.01=1000d=03E8h] by communication.
(5) If FA09 is set to 0, the acceleration/deceleration time parameters acc, dec, f500, f501, f510,
f511, f514, and f515can be set in units of 0.01 sec.
Q Acceleration/deceleration setting time unit (FA09)
Communication No.
FA09
Function name
Unit
Adjustment range
0: 0.01 sec. (0.01-600.0)
1: 0.1 sec. (0.1-6000.0)
Acceleration/deceleration time unit
－
62
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„
Command parameters
For those parameters that contain data only in the RAM and not in the EEPROM, their data return to
initial values when the power is turned off, in failure resetting, or when standard shipment settings
are set. Note that parameters without data storage in the EEPROMs will be written in the RAM only
even if the command W (writing in EEPROMs and RAM) is executed.
Q Commands NOTE : Data is expressed in decimal notation.
Communica-
Min.
Setting
Unit
Write
During
Operation
tion
Num-
ber.(HEX)
Adjustment Range
Initial
Value
EEP
ROM
Function
1
Command 1 (2-wire RS485)＊
－
FA00
0 to 65535
0
0
yes None
FA01 Frequency command value (2- 0 to Max. frequency 0.01Hz
yes None
1
wire RS485)＊
()
FA03 Operation panel operation
Low-limit frequency 0.01Hz
() to High-limit
0
yes Available
frequency *2
frequency ()
0 to 65535
1
Command 1 (4-wire RS485)＊
FA04
－
0
0
yes None
yes None
FA05 Frequency command value (4- 0 to Max. frequency 0.01Hz
1
wire RS485)＊
()
4
Panel key selection＊
－
－
FA10
0: Main unit
1: Comunication
0 to 65535
0
0
yes None
yes None
FA11 External communication key
4
data＊
1
1
＊
＊
FA20
FA22
0 to 65535
0 to 65535
0
0
0
yes None
yes None
yes None
Command 2 (2-wire RS485)
Command 2 (4-wire RS485)
FA30 Torque command value (2-wire -250.00 to 250.00
RS485)
－
－
0.01%
FA32 Torque command value (4-wire -250.00 to 250.00
0.01%
0
yes None
RS485)
3
Terminal output data＊
FM analog output data＊
FA50
FA51
0 to 255
1
1
0
0
yes None
yes None
3
3
0 to 2047
(11-bit resolution)
0 to 2047
(11-bit resolution)
0 to 2047
(11-bit resolution)
0 to 2047
(11-bit resolution)
AM analog output data＊
MON1 analog output data＊
MON2 analog output data＊
FA52
FA53
FA54
1
1
0
0
0
1
yes None
yes None
yes None
yes Available
3
3
1
FA65 Select display by communica- 0 to 2
－
4
tion＊
4
Numerical display data＊
FA66
FA67
FA68
0-9999
0 to 2
1
0
0
0
yes Available
yes Available
yes Available
yes Available
4
Decimal point position＊
－
－
－
4
LED data for unit 0＊
0 to 3
FA70 ASCII display data 1
0 to 127
100
(‘d’)
4
First digit from left＊
FA71 ASCII display data 1
Second digit from left＊
0 to 255
0 to 255
0 to 127
65
(‘A’)
yes Available
yes Available
yes Available
－
－
－
4
FA72 ASCII display data 1
116
(‘t’)
4
Third digit from left＊
FA73 ASCII display data 1
65
(‘A’)
4
Fourth digit from left＊
4
LED data for unit1＊
－
－
FA74
0 to 3
0
yes Available
yes Available
FA75 ASCII display data 2
0 to 127
48
(‘0’)
4
First digit from left＊
FA76 ASCII display data 2
Second digit from left＊
0 to 255
0 to 255
0 to 127
48
(‘0’)
yes Available
yes Available
yes Available
－
－
－
4
FA77 ASCII display data 2
48
(‘0’)
4
Third digit from left＊
FA78 ASCII display data 2
48
(‘0’)
4
Fourth digit from left＊
4
LED data for unit 2＊
－
－
FA79
0 to 3
0 to 1
0
0
yes Available
yes Available
4
Block communication mode＊
FA80
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1: Enable the communication command or communication frequency setting before setting these
＊
＊
parameters are set. Otherwise, the parameters will not function. See “8.1 Command by
communication” for the method to enable them.
2: Note that the Communication Number for operation panel operation frequency is FA02 in the
VF-S7 and VF-S9 series.
3: See “8.1 Communication commands (commande from the computer)” for the detail information.
4: See “8.3 Utilizing panel (LEDs and keys) by communication” for the detail information.
＊
＊
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„ Monitor parameters
*These Parameters are read-only (monitor-only) parameters.
Communication No.
Function
Unit
Remarks
Current
value
Trip data held
FC00
－
Monitor of key data (Effective
data)
－
Refer to Section
8.3.
FC01
FC90
FC91
FD00
FD01
FD02
FD03
FD04
FD05
FD06
FD07
－
－
Monitor of inverter keypad data
Trip code
－
－
－
－
Alarm code
－
Refer to Section
8.2.
FE00
FE01
FE02
FE03
FE04
FE05
FE06
FE07
FE08
FE10
FE11
FE12
FE13
FE14
FE15
FE16
FE17
FE18
FE19
FE20
FE21
FE22
FE23
FE24
Output frequency
Inverter status 1
0.01Hz
－
Frequency command value
Output current
0.01Hz
0.01%
0.01%
0.01%
－
Input voltage (DC detection)
Output voltage
Input terminal information
Output terminal information
CPU version 1 (application)
Past trip 1 (latest)
Past trip 2
Refer to Section
8.2.
－
－
－
－
－
－
Refer to Section
8.2.
－
Past trip 3
－
－
Past trip 4 (earliest)
Cumulative operation time
Compensated frequency
Speed feedback (real time)
Speed feedback (1-sec. filter)
Torque
－
－
1h
FD15
FD16
FD17
FD18
FD19
FD20
FD21
FD22
FD23
FD24
0.01Hz
0.01Hz
0.01Hz
0.01%
0.01%
0.01%
0.01%
0.01Hz
0.01%
Torque command
Torque current
Exciting current
PID feedback value
Motor overload factor (OL2 data)
Inverter overload factor (OL1
data)
0.01%
1%
FD25
FE25
Regenerative braking resistance
overload factor (OLr data)
Motor load factor
FD26
FD27
FD28
FE26
FE27
FE28
1%
1%
Inverter load factor
Regenerative braking resistance
load factor
1%
FD29
FD30
－
FE29
FE30
FE35
FE36
FE37
FE38
FE39
FE42
Input power
0.01kW
0.01kW
0.01%
0.01%
0.01%
0.01%
0.01%
Output power
RR/S4 input
－
VI/II input
Refer to Section
8.2.
－
RX input
－
Option AI1
－
Option AI2
FD42
Inverter status 2
Refer to Section
8.2.
－
－
FE43
FE44
FE45
FE46
FE48
FE49
MON1 output (analog option 1)
MON2 output (analog option 2)
Command mode status
Frequency setting mode status
PID command
－
－
－
FD45
FD46
FD48
FD49
－
Refer to Section
8.2.
－
0.01Hz
Inverter status 3
Refer to Section
8.2.
－
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FD50
FD51
－
－
Light-load high-speed torque 1
Light-load high-speed torque 2
MY monitor 1
0.01%
0.01%
－
－
FE60
FE61
FE62
FE63
FE70
FE71
FE73
FE76
FE77
FE79
－
MY monitor 2
－
－
MY monitor 3
－
－
MY monitor 4
－
－
Rated current
0.1a
0.1V
－
－
Rated voltage
－
CPU version 2 (motor)
Integral input power
Integral output power
Part replacement alarm informa-
tion
－
0.01kWh
0.01kWh
－
－
Refer to Section
8.2.
－
－
FE80
FE84
Cumulative power ON time
Binary input value (option)
1h
－
FD84
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Appendix 1 Table of data codes
• JIS (ASCII) codes
Higher orde
0
1
2
3
4
5
6
7
Lower order
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
NUL
TC7(DLE)
DC1
(SP)
!
０
１
２
３
４
５
６
７
８
９
：
；
＜
＝
＞
？
＠
Ａ
Ｂ
Ｃ
Ｄ
Ｅ
Ｆ
Ｇ
Ｈ
Ｉ
Ｊ
Ｋ
Ｌ
Ｍ
Ｎ
Ｏ
Ｐ
Ｑ
Ｒ
Ｓ
Ｔ
Ｕ
Ｖ
Ｗ
Ｘ
Ｙ
Ｚ
［
￥
］
＾
＿
、
ａ
ｂ
ｃ
ｄ
ｅ
ｆ
ｇ
ｈ
ｉ
ｊ
ｋ
ｌ
ｍ
ｎ
ｏ
ｐ
ｑ
ｒ
ｓ
ｔ
ｕ
ｖ
ｗ
ｘ
ｙ
ｚ
｛
｜
｝
‾
TC1(SOH)
TC2(STX)
TC3(ETX)
TC4(EOT)
TC5(ENQ)
TC6(ACK)
BEL
DC2
”
＃
＄
％
＆
’
（
）
＊
＋
，
－
．
／
DC3
DC4
TC8(NAK)
TC9(SYN)
TC10(ETB)
CAN
FE0(BS)
FE1(HT)
FE2(LF)
FE3(VT)
FE4(FF)
FE5(CR)
SO
EM
SUB
ESC
IS4(FS)
IS3(GS)
IS2(RS)
IS1(US)
SI
DEL
CR: Carriage return
Ex.: Code 41 = Character A
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Appendix 2 Response time
The communication response time can be calculated from data communication time and inverter
processing time. When wishing to know the communication response time, calculate using the
following as a reference
Interval corresponding to 3.5 bytes
Data processing time of inverter (Approx. 8 ms)
Data transmission time
Data transmission time
PC → Inverter
Inverter → PC
Response time
„
Data transmission time
1
Data transmission time =
×number of bytes transmitted×number of bits
baudrate
* Number of bits = start bit + data frame length + parity bit + stop bit
* Minimum number of bits = 1 + 8 + 0 + 1 = 10 bits
* Maximum number of bits = 1 + 8 + 1 + 2 = 12 bits
<An example of the calculation of the transmission time: 19200 bps, 8 bytes, 11 bits>
1
Data transmission time =
×8×11= 4.6ms
19200
„
Data processing time of inverter
Data processing time: maximum 8 ms
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Appendix 3 Compatibility with the communication function
of the VF-A7
To provide consistency in communication procedures, the communication function of the VF-AS1
series of inverters has been designed based on the protocols used for the Toshiba VF-A7 series of
inverters. With regard to compatibility, however, VF-A7 users should check the items described be-
low before using the communication function of their inverters.
„ To VF-AS1 inverter users:
Some parameters of the VF-A7 are different from those of the VF-AS1 in function or adjustment
range (upper and lower limits), even though they have the same title or the same communication
number. So, when accessing a parameter, consult the VF- A7 inverter’s instruction manual to see if
the parameter is identical to the corresponding parameter of the VF-AS1. If the parameter differs,
modify the computer program to suit your inverter. To avoid hazards, never copy parameters from
one model of inverter to another.
„ Comparison of communication-related items
The table below gives a comparison of communication-related items to be kept in mind when re-
placing VF-A7 inverters with VF-AS1 inverters or when connecting VF-A7 inverters and VF-AS1 in-
verters to the same network. It does not cover any items common to the VF-A7 and VF-AS1 series
of inverters.
Model
VF-A7 series
VF-AS1 series
Reference
Refer to
Item
32-bit mode
For some parameters, including accel-
eration/deceleration time parameters,
data communication are carried out in
32-bit mode.
32-bit mode is not available. For all
parameters, access is made in 16-bit Section 9.
mode.
Handling of negative
data specified with pa-
rameters
Access is made in 32-bit mode.
Access is made in 16-bit mode. To
see if the value specified with a
parameter is signed or not, check the
adjustment range of the parameter.
No frame can be divided into smaller
frames. Do not place an interval cor-
responding to less than 1.5 bytes of
data between frames to be sent.
0.1 sec.
－
Division of a frame
A frame can be sent with it divided into
smaller frames if all the frames can be
sent within approx. 0.5 sec.
Refer to
Section
3.1.
Communication time-
out period (guide)
0.5 sec.
Receipt information in
front of the start code
Even if there is receipt information in
front of the start code of a frame re-
ceived, the frame is assumed to begin
with the start code.
A frame must always begin with a start
code, otherwise it will be rejected.
Reset command
RS485 baud rate
When an inverter receives a reset com- When an inverter receives a reset
mand, it sends back a response before it command, it sends back no response.
is reset.
Refer to
Section
8.1.
Refer to
Section
7.1.
1200 to 38400 bps
9600 to 38400 bps
Notice
♦ Do not use communication programs written for another series of inverters.
Even though parameters have the same title and the same communication number, they may be different
in function. When using a parameter, always check its specifications in the instruction manual for your
inverter. If the specifications of the parameter differ, modify the computer program to suit your inverter.
♦ To avoid hazards, do not copy parameters from one model of inverter to another.
Even though parameters have the same titles and communication numbers, they may be different in
function.
69
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Appendix 4 Troubleshooting
If a problem arises, diagnose it in accordance with the following table before making a service call. If
the problem cannot be solved by any remedy described in the table or if no remedy to the problem is
specified in the table, contact your Toshiba dealer.
Problem
Remedies
Reference
Communication will not take - Are both the computer and the inverter turned on?
place.
- Are all cables connected correctly and securely?
- Are the same baud rate, parity and bit length set for every unit on the
network?
Chapter 7
Section 4.1
Section 5.1
Chapter 9
Inverter
instruction
manual
An error code is returned.
- Is the data transmission format correct?
- Does the data written fall within the specified range?
- Some parameters cannot be written during inverter operation.
Changing should be attempted when the inverter is in halt.
The trip err5 and alarm t - Check the cable connection and the timer setting.
Section 7.3
occur.
Frequency instructions from the - Is the frequency setting mode selection parameter set to “computer”? Section 8.1
computer have no effect.
Commands, including the run and - Is the command mode selection parameter set to “computer”?
Section 8.1
stop commands, from the com-
muter have no effect.
- Isthe inverter connected correctly?
- Are you sure the receive line and the send line are not in contact with
each other?
During RS485 communication,
an inverter sends back respons-
es repeatedly an infinite number
of times.
Refer
Appendix
2.
to
A change to a parameter does Some communication-related parameters do not take effect until the
Chapter 7
not take effect.
inverter is reset. To make them take effect, turn the inverter off tempo-
rarily, then turn it back on.
The setting of a parameter was When using the TOSHIBA Inverter Protocol, use the W command to Section 4.2
changed, but it returns to its write data into the EEPROM. If you use the P command that writes data
original setting when the inverter into the RAM only, the data will be cleared when the inverters are reset.
is turned off.
70
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Appendix 5 Connecting for RS485 communication
„ Connector diagram for 2-wire RS485 communication
Pin-8
Pin-1
Signal name
RXD+/TXD+
RXD-/TXD-
FWE
Pin number
Description
4
5
Same phase reception data (positive line)
Anti-phase reception data (negative line)
FEW (Do not connect the cable.)
Ground line of signal data
6
SG
8
(3)
2
PRG(TX)
PRG(RX)
P11
PRG (Do not connect the cable.)
PRG (Do not connect the cable.)
11V (Do not connect the cable.)
1
7
„ Connecting diagram for 2-wire RS485 communication
* Never use pin-7 (P11).
Straight
Straight
Straight
Slave
Slave
Master
Slave
CN1
RXD+/TXD+
RXD-/TXD-
RXD+/TXD+
RXD-/TXD-
RXD+/TXD+
RXD-/TXD-
RXD+/TXD+
RXD-/TXD-
Pin-4
Pin-5
SG
SG
Pin-8
(Pin-3)
SG
SG
Terminating resistance
120Ω-1/2W
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„ Connector diagram for 4-wire RS485 communication
Pin-8
Pin-1
Signal name
RXA
Pin number
4
Description
Same phase reception data (positive line)
RXB
TXA
TXB
SG
5
3
Anti-phase reception data (negative line)
Same phase transmitting data (positive line)
Anti-phase transmitting data (negative line)
Ground line of signal data
6
8
(2)
1
－
Open (Do not connect the cable.)
11V (Do not connect the cable.)
P11
7
*This table shows signal line of inverter side. (Example: RXA signal is received by
inverter.)
„ Connecting diagram for 4-wire RS485 communication
Straight
Cross
Straight
Slave
Master
Slave
Slave
CN1
Pin-4
RXA
RXB
TXA
TXB
SG
RXA
RXB
TXA
TXB
SG
RXA
RXB
TXA
TXB
SG
RXA
RXB
TXA
TXB
SG
Pin-5
Pin-3
Pin-6
Pin-8
(
Pin-2)
Terminating resistance
120Ω-1/2W
* When using 2-wire type, short RXB to TXB and RXA to TXA.
* Never use pin-1 (Open) and pin-7 (P11).
72
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