Delta Electronics AC Motor Drive VFD-G - Manual (Page 127)

Chapter 4 Parameters|
4-76 Revision July 2008, EG03, SW V1.06
RTU mode:
Command message: Response message: Error response message
ADR 01H ADR 01H ADR 01H
CMD 06H CMD 1 06H CMD 1 86H
data 01H data 01H Error code 02
Starting address 00H Starting address 00H CRC CHK LOW C3H
data 17H data 17H CRC CHK HIGH A1H
00H 70H
CRC CHK LOW 87H CRC CHK LOW 87H
CRC CHK HIGH C6H CRC CHK HIGH C6H
● Command code: 08H, loop detection
This command is used to test the communication condition between master control
equipment (usually is PC or PLC) and AC drive. AC drive will deliver the data that received
from AC drive to master control equipment.
For example:
ASCII mode:
Command message: Response message: Error response message
STX ‘:’ STX ‘:’ STX ‘:’
ADR 1 ‘0’ ADR 1 ‘0’ ADR 1 ‘0’
ADR 0 ‘1’ ADR 0 ‘1’ ADR 0 ‘1’
CMD 1 ‘0’ CMD 1 ‘0’ CMD 1 ‘8’
CMD 0 ‘8’ CMD 0 ‘8’ CMD 0 ‘8’
data ‘0’ data ‘0’ Error ‘0’
Starting ‘0’ Starting ‘0’ code ‘2’
address ‘0’ ‘0’ LRC CHK 0 ‘6’
‘0’ ‘0’ LRC CHK 1 ‘D’
data ‘1’ data ‘1’ END 1 CR
‘7’ ‘7’ END 0 LF
‘7’ ‘7’
‘0’ ‘0’
LRC CHK 1 ‘7’ LRC CHK 1 ‘7’
LRC CHK 0 ‘0’ LRC CHK 0 ‘0’
END 1 CR END 1 CR
END 0 LF END 0 LF