Delta Electronics VFD-G manual RTU mode, ASCII mode

Chapter 4 Parameters

RTU mode:

Command message:

ADR	01H
CMD	06H
data	01H
Starting address	00H
data	17H
	00H
CRC CHK LOW	87H
CRC CHK HIGH	C6H

Response message:

ADR	01H
CMD 1	06H
data	01H
Starting address	00H
data	17H
	70H
CRC CHK LOW	87H
CRC CHK HIGH	C6H

Error response message

ADR	01H
CMD 1	86H
Error code	02
CRC CHK LOW	C3H
CRC CHK HIGH	A1H

●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:

STX	‘:’
ADR 1	‘0’
ADR 0	‘1’
CMD 1	‘0’
CMD 0	‘8’
data	‘0’
Starting	‘0’
address	‘0’
	‘0’
data	‘1’
	‘7’
	‘7’
	‘0’
LRC CHK 1	‘7’
LRC CHK 0	‘0’
END 1	CR
END 0	LF

Response message:

STX	‘:’
ADR 1	‘0’
ADR 0	‘1’
CMD 1	‘0’
CMD 0	‘8’
data	‘0’
Starting	‘0’
	‘0’
	‘0’
data	‘1’
	‘7’
	‘7’
	‘0’
LRC CHK 1	‘7’
LRC CHK 0	‘0’
END 1	CR
END 0	LF

Error response message

STX	‘:’
ADR 1	‘0’
ADR 0	‘1’
CMD 1	‘8’
CMD 0	‘8’
Error	‘0’
code	‘2’
LRC CHK 0	‘6’
LRC CHK 1	‘D’
END 1	CR
END 0	LF

4-76 Revision July 2008, EG03, SW V1.06