TECO 7300CV - Page 14

7300CV MODBUS COMMUNICATION PROTOCOL
File No. :PC-CV-08
Version : 1.A
Page :
14/34
5.2.5 Control function block read
ASCII Mode
PCÆ INV(PLC) INV(PLC) ÆPC
3AH STX 3AH STX
30H 30H
31H
Address
31H
Address
30H 30H
33H
Function Code
33H
Function Code
30H 30H
32H 43H
Data Length
(Byte)
43H
43H
*Register Number
*Send out the data from
2CCH~2D1H, total 24 Byte
30H ?
30H ?
CHECK SUM
30H 0DH END
36H
Data Length
0AH END
?
?
CHECK SUM
0DH END
0AH END
RTU Mode
PC Æ INV(PLC) INV(PLC)ÆPC
01H Address 01H Address
03H Function Code 03H Function Code
02H 0CH Data length
CCH
*Register Number
00H
**Send out the data from
2CCH~2D1H, total 12 Byte
06H
Data Length
? CRC High Byte
CRC High Byte ? CRC Low Byte
CRC Low Byte