TECO 7300CV - Page 10

7300CV MODBUS COMMUNICATION PROTOCOL
File No. :PC-CV-08
Version : 1.A
Page :
10/34
5.2 Function block read
5.2.1 Timer 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 41H
Data length
(Byte)
36H
34H
*Register Number
*Send out the data from
264H~268H, total 20 Byte
30H ?
30H ?
CHECK
SUM,
30H 0DH END
35H
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 0AH Data length
64H
*Register Number
00H
*Send out the data from 264H~268H,
total 10 Byte
05H
Data Length
? CRC High Byte
CRC High Byte ? CRC Low Byte
CRC Low Byte