Delta Electronics VFD-G manual RTU mode, ASCII mode

Chapter 4 Parameters

RTU mode:
Command message:		Response message:		Error response message
ADR	01H	ADR	01H	ADR	01H
CMD	03H	CMD	03H	CMD	90H
Starting data	01H	Number of data	04H	Error code	02H
address	01H	data 0101H	17H	CRC CHK LOW	CDH
Number of data	00H’	content	70H	CRC CHK HIGH	C1H
(Word)	02H	0102H	08H
CRC CHK Low	94H	content	98H
CRC CHK High	37H	CRC CHK LOW	FBH
		CRC CHK HIGH	36H

●Command code: 06H, write a word

For example, writing 6000(1770H) to address 0100H of AMD with address 01H.

ASCII mode:

Command message:

STX	‘:’
ADR 1	‘0’
ADR 0	‘1’
CMD 1	‘0’
CMD 0	‘6’
data	‘0’
starting	‘1’
address	‘0’
	‘0’
data	‘1’
	‘7’
	‘7’
	‘0’
LRC CHK 1	‘7’
LRC CHK 0	‘7’
END 1	CR
END 0	LF

Response message:

STX	‘:’
ADR 1	‘0’
ADR 0	‘1’
CMD 1	‘0’
CMD 0	‘6’
data	‘0’
starting	‘1’
address	‘0’
	‘0’
data	‘1’
	‘7’
	‘7’
	‘0’
LRC CHK 1	‘7’
LRC CHK 0	‘7’
END 1	CR
END 0	LF

Error response message

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

Revision July 2008, EG03, SW V1.06 4-75