Delta Electronics VFD-M Series User Manual page 98

Command code: 03H, read N words. The maximum value of N is 12. For example, reading
continuous 2 words from starting address 2102H of AMD with address 01H.
ASCII mode:
Command message:
CMD 1
CMD 0
Starting data address
Number of data
(count by word)
LRC CHK 1
LRC CHK 0
RTU mode:
Command message:
Starting data address
Number of data
(count by word)
CRC CHK Low
CRC CHK High
Revision May 2008, ME14, SW V3.04
STX ':'
ADR 1 '0'
ADR 0
'1'
'0'
'3'
'2'
'1'
'0'
'2'
'0'
'0'
'0'
'2'
'D'
'7'
END 1 CR
END 0
LF
ADR 01H
CMD 03H
21H
02H
00H
02H
6FH
F7H
Chapter 4 Parameters|
Response message:
STX
ADR 1
ADR 0
CMD 1
CMD 0
Number of data
(count by byte)
Content of starting
data address
2102H
Content of data address
2103H
LRC CHK 1
LRC CHK 0
END 1
END 0
Response message:
ADR
CMD
Number of data
(count by byte)
Content of data address
2102H
Content of data address
2103H
CRC CHK Low
CRC CHK High
':'
'0'
'1'
'0'
'3'
'0'
'4'
'1'
'7'
'7'
'0'
'0'
'0'
'0'
'0'
'7'
'1'
CR
LF
01H
03H
04H
17H
70H
00H
00H
FEH
5CH
4-63