7300CV MODBUS COMMUNICATION PROTOCOL
File No. :PC-CV-08
Version : 1.A
Page :
15/34
5.2.6 Coil status read
ASCII Mode
PC
Æ
INV(PLC) INV(PLC)
Æ
PC
3AH STX
3AH STX
30H
30H
31H
Address
31H
Address
30H
30H
33H
Function Code
33H
Function Code
30H
31H
32H
30H
Data Length
(Byte)
46H
43H
*Register Number
*Send out the data from
2FCH~303H, total 32 Byte
30H
?
30H
?
CHECK SUM
30H
0DH
END
38H
Data Length
0AH
END
?
?
CHECK SUM
0DH END
0AH END
RTU Mode
PC
Æ
INV(PLC) INV(PLC)
Æ
PC
01H Address
01H Address
03H Function
Code
03H Function
Code
02H
10H Data
length
FCH
*Register Number
00H
*Send out the data from
2FCH~303H, total 16 Byte
08H
Data Length
?
CRC High Byte
CRC High Byte
?
CRC Low Byte
CRC Low Byte