TECO 7300CV - Page 18

7300CV MODBUS COMMUNICATION PROTOCOL
File No. :PC-CV-08
Version : 1.A
Page :
18/34
6.4.2 Counter function block write
ASCII Mode
PC Æ 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
38H 38H
43H
*Register Number
43H
*Register
Number
30H 30H
30H 30H
30H 30H
33H
Data Length
(Byte)
33H
Data Length
30H ?
36H
DATA Number
?
CHECK
SUM
0DH END
0AH END
*Send out the data from
28CH~28EH, total 12 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
8CH
* Register Code
8CH
* Register Code
00H 00H
03H
Data Length
03H
Data Length
06H
DATA Number
? CRC High Byte
? CRC Low Byte*Send out the data from 28CH~28EH,
total 6 Byte
? CRC High Byte
? CRC Low Byte