Automation Direct DURApulse GS4 User Manual

Page 5–14
DuRApulse GS4 AC Drive User Manual – 1st Ed, Rev A - 10/20/2017
Chapter 5: Serial Communications
Cmd (Command Code) and daTa (daTa CharaCTers)
The format of data characters depends on the command code. The available command codes are
described as followed: Command code: 03H, read N words. The maximum value of N is 12. For
example, reading continuous 2 words from starting address 2102H of the AC drive with address
01H.
ASCII mode:
Command Message Response Message
STX ‘:’ STX ‘:’ ‘:’
ADR 1
ADR 0
‘0’
ADR 1
ADR 0
‘0’
‘1’ ‘1’
CMD 1
CMD 0
‘0’
CMD 1
CMD 0
‘0’
‘3’ ‘3’
Starting data
address
‘2’
Number of
data
(Count by byte)
‘0’
‘1’ ‘4’
‘0’
Content of
starting
data address
2102H
‘1’
‘2’ ‘7’
Number of
data
(Count by
word)
‘0’ ‘7’
‘0’ ‘0’
‘0’
Content data
address 2103H
‘0’
‘2’ ‘0’
LRC CHK 1
LRC CHK 0
‘D’ ‘0’
‘7’ ‘0’
END 1
END 0
CR
LRC CHK 1
LRC CHK 0
‘7’
LF ‘1’
END 1
END 0
CR
LF
RTU mode:
Command Message Response Message
ADR 01H ADR 01H
CMD 03H CMD 03H
Starting data
address
21H
Number of
data
(Count by byte)
04H
02H ‘0’
Number of
data
(Count by
word)
00H
Content of
data address
2102H
17H
02H 70H
CRC CHK Low
CRC CHK High
6FH
Content of
data address
2103H
00H
F7H 02H
CRC CHK Low
CRC CHK High
FEH
5CH

Automation Direct DURApulse GS4 Specifications

General

Brand	Automation Direct
Model	DURApulse GS4
Category	Controller
Language	English