TECO 7300CV - Page 13

7300CV MODBUS COMMUNICATION PROTOCOL
File No. :PC-CV-08
Version : 1.A
Page :
13/34
5.2.4 Analog function block read
ASCII Mode
PC Æ 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 36H
Data Length
(Byte)
43H
30H
*Register Number
*Send out the data from
2C0H~2C2H, total 12 Byte
30H ?
30H ?
CHECK
SUM,
30H 0DH END
33H
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 06H Data length
C0H
*Register Number
00H
**Send out the data from
2C0H~2C2H, total 6 Byte
03H
Data Length
? CRC High Byte
? CRC High Byte ? CRC Low Byte
? CRC Low Byte