Contents
Tosvert VF-AS1 Series RS485 Communication Function
E6581315②
Read first Safety precautions
E6581315
Contents
General outlines of the communication function
BIT15 BIT8BIT7 BIT0
Bit Word
Data transmission specifications
BIT2
Communication protocol
About the handling of received frames
MOUBUS-RTU
Binary mode 2FH
Toshiba Inverter Protocol
Data transmission format used in Ascii mode
Data transmission format
INV-NO CMD
Data
5bytes Blank
28H Bytes Checksum area
INV-NO
Data SUM
Data transmission format used in binary mode
Command received
Returned for the 57H W and 50H P commands
Byte Bytes
Sum 1 bytes Checksum not omissible 00H to FFH
Norn
2FH Byte 4EH6EH Bytes
Transmission format of Block Communication
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Bytes Blank Start Code
INV-NO
Commands
Dummy data is required for this command
Reads the data with the specified communication number
Block communication Computer Inverter
RFE03CR
RFE03077BCR
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Transmission errors
Format error Data transmission format does not match
Communication There is no communication number that matches
Broadcast communication function
VF-AS1
Examples of the use of communication commands
Ascii mode Computer → Inverter Inverter → Computer
From the computer H = 24d trip status
RFC90CR
Examples of Communication programs
=LENS$ For I=1 to L
Next
Input #1,B$
Goto
160 T=TIMER COUNT=TIMER-T
If Count 0 then T=TIMER
Print #1,B$
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End If
MSComm1.Output = Text2.Text & Chr13 End Sub
Text2.Text = Text1.Text = End Sub
MODBUS-RTU protocol
Inverter number
Read command
MODBUS-RTU transmission format
CRC
Write command
Blank Command 1 byte
5bytes Blank Command 1 byte
Text size is 8 bytes fixed Inverter
Error codes
CRC Generation
Bit counter =
End Return CRC
Inter-drive communication
E6581315 QWiring 2-wire RS485 communication
Never use pin-7 P11 QWiring 4-wire RS485 communication)
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Parameters relating to the slave side example
Proportional control of speed
=0.01%
Slave 100.00Hz 00%
90.00Hz 45.00Hz
Slave 100.00Hz1 00%
80.00Hz 40.00Hz
Transmission format for inter-drive communication
INV-NO 1 byte Inverter number
Communication parameters
0OFF
MODBUS-RTU
Baud rate, , Parity
Inverter number
Timer Time-out period Computer link
PC → INV
Master INV To Slave
INV INV → PC PC → INV
Send waiting time ,
Free notes
Use this function for the following case
Commands and monitoring from the computer
Communication commands commands from the computer
PI OFF
OFF
Electric Power quantity
Forcibly braked Preliminary excitation
Brake release B
Braking answer BA
Wire RS485 communication FA32
Terminal board output data FA50
FM analog output FA51
AM analog output FA52
Output terminal no Specified data output
Monitoring from the computer
RFD00CR
Unit 0.01% N·m
Input terminal board status FD06, FE06
RES
Input terminal function selection 9 f119
BIT15
Output terminal board status FD07, FE07
Inverter operating status 1 FD01, FE01
ST=ON ST=OFF
Inverter operating status 2 FD42, FE42
Inverter operating status 3 FD49, FE49
Inverter operating command mode status FD45, FE45
Inverter operating frequency mode status FD46, FE46
Preset speed operation
Alarm information monitor FC91
Cumulative operation time alarm monitor FE79
Bit Specifications Remarks
E6581315
Inverter model capacity code FB05
Model Data
LED setting by communication
Parameter Name Range Setting
Utilizing panel LEDs and keys by communication
Block Communication Function for LED Display
Ascii LED display data code 00H-1FH are blank
Blank
Key utilization by communication
FA10=0
FA10=1
Parameter data
EEP
ROM
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Alarm code
FE02 Frequency command value 01Hz
FE19 Torque command
FE29 Input power
Tion FE80 Cumulative power on time
E6581315 FD50 Light-load high-speed torque 01%
FE84 Binary input value option
Appendix 1 Table of data codes
Can
SUB
ESC
Appendix 2 Response time
Response time Data transmission time
Appendix 3 Compatibility with the communication function
VF-A7
Appendix 4 Troubleshooting
Appendix 5 Connecting for RS485 communication
RXA
RXB
TXA
TXB