TECO 7300CV - Page 21

7300CV MODBUS COMMUNICATION PROTOCOL
File No. :PC-CV-08
Version : 1.A
Page :
21/34
6.4.5 Control function block write
ASCII Mode
PCÆ INV(PLC) INV(PLC) ÆPC
3AH STX 3AH STX
30H 30H
31H
Address
31H
Address
31H 30H
30H
Function Code
33H
Function Code
30H 30H
32H 32H
43H 43H
43H
*Register Number
43H
*Register
Number
30H 30H
30H 30H
30H 30H
36H
Data Length
(Byte)
36H
Data Length
30H ?
43H
DATA Number
?
CHECK
SUM
0DH END
0AH END
* Send out the data from
2CCH~2D1H, total 24 Byte
?
?
CHECK SUM
0DH END
0AH END
RTU Mode
PC Æ INV(PLC) INV(PLC)ÆPC
01H Address 01H Address
10H Function Code 10H Function Code
02H 02H
CCH
* Register Code
CCH
* Register Code
00H 00H
06H
Data Length
03H
Data Length
0CH
DATA Number
? CRC High Byte
? CRC Low Byte*Send out the data from
2CCH~2D1H, total 12 Byte
? CRC High Byte
? CRC Low Byte