7300CV MODBUS COMMUNICATION PROTOCOL
File No. :PC-CV-08
Version : 1.A
Page :
17/34
6.4 Function block write
6.4.1 Timer function block write
ASCII Mode
PC
Æ
INV(PLC) INV(PLC)
Æ
PC
3AH
STX
3AH
STX
30H
30H
31H
Address
31H
Address
31H
31H
30H
Function Code
30H
Function Code
30H
30H
32H
32H
36H
36H
34H
*Register Number
34H
*Register
Number
30H
30H
30H
30H
30H
30H
34H
Data Length
(Byte)
34H
Data Length
30H
?
38H
DATA Number
?
CHECK
SUM
0DH
END
0AH
END
*Send out the data from
264H~267H, total 16 Byte
?
?
CHECK SUM
0DH
END
0AH
END
RTU Mode
PC
Æ
INV(PLC) INV(PLC)
Æ
PC
01H Address
01H Address
10H Function
Code
10H Function
Code
02H
02H
64H
* Register Code
64H
* Register Code
00H
00H
04H
Data Length
04H
Data Length
08H
DATA Number
?
CRC High Byte
?
CRC Low Byte
*Send out the data from 264H~267H,
total 8 Byte
?
CRC High Byte
?
CRC Low Byte