Omron SYSDRIVE 3G3MV User Manual page 209

Communications
D DSR Message
Byte No.
1 Slave address
2 Function code
3 Register No. of read start data Register No. of read start data
4
5 No. of registers of read data No. of registers of read data
6
7 CRC-16 check CRC-16 check
8
D Response
Normal
Byte No.
1 Slave address
2 Function code
3 No. of bytes of attached data
Data in register No. 0020 Data in register No. 0020
4
5
Data in register No. 0021 Data in register No. 0021
6
7
Data in register No. 0022 Data in register No. 0022
8
9
10 Data in register No. 0023 Data in register No. 0023
11
12 CRC-16 check CRC-16 check
13
Error
Byte No.
1 Slave address
2 Function code
3 Error code
4 CRC-16 check CRC-16 check
5
Data
Data
Data
Chapter 7
Data
example
(Hex)
02
03
00
20
00
04
45
F0
Data
example
(Hex)
02
03
08
MS B 00
LSB 65
MSB 00
LSB 00
MSB 00
LSB 00
MSB 01
LSB F4
AF
82
Data
example
(Hex)
02
83
03
F1
31
7-15