
User Manual of SY5000 series AC Drive MODBUS communication protocol
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DATA
Number of data (count
by byte)
‘0’
‘4’
Content of starting
address 2102H
‘1’
‘7’
‘7’
‘0’
Content of address
2103H
‘0’
‘0’
‘0’
‘0’
LRC Check
‘7’
‘1’
END
CR
LF
b) RTU mode
:
Command message:
Address
01H
Function
03H
Starting data address
21H
02H
Number of data
(count by word)
00H
02H
CRC CHK Low
6FH
CRC CHK High
F7H
Response message:
Address
01H
Function
03H
Number of data
(count by byte)
04H
Content of data
address 2102H
17H
70H
Content of data
address 2103H
00H
00H
CRC CHK Low
FEH
CRC CHK High
5CH