TECO 7300CV - Page 11

7300CV MODBUS COMMUNICATION PROTOCOL
File No. :PC-CV-08
Version : 1.A
Page :
11/34
5.2.2 Counter function block read
ASCII Mode
PC ÆINV(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 38H
Data Length
(Byte)
38H
43H
*Register Number
*send out the data from
28CH~28FH, total 16 Byte
30H ?
30H ?
CHECK SUM
30H 0DH END
34H
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 08H Data length
8CH
*Register Number
00H
*Send out the data from 28CH~28FH,
total 8 Byte
04H
Data Length
? CRC High Byte
CRC High Byte ? CRC Low Byte
CRC Low Byte