TECO 7300CV - Page 16

7300CV MODBUS COMMUNICATION PROTOCOL
File No. :PC-CV-08
Version : 1.A
Page :
16/34
6.3 Ladder page 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
30H 30H
30H
*Register Number
30H
*Register
Number
30H 30H
30H 30H
30H 30H
41H
Data Length
(Byte)
41H
Data Length
31H ?
34H
DATA Number
?
CHECK
SUM
0DH END
*Send out the data from
200H~209H, total 40 Byte
0AH END
?
?
CHECK SUM
0DH END
0AH END
RTU Mode
PC Æ INV(PLC) INV(PLC)ÆPC
01H Address 01H Address
10H Function Code 03H Function Code
02H 02H
00H
* Register Code
00H
* Register Code
00H 00H
0AH
Data Length
0AH
Data Length
14H
DATA Number
? CRC High Byte
? CRC Low Byte*end out the data from 200H~209H,
total 20 Byte
? CRC High Byte
? CRC Low Byte