Omron SYSDRIVE 3G3MV User Manual page 211

Communications
D Response
Normal
Byte No.
1 Slave address
2 Function code (10 Hex)
Register No. of write start data Register No. of write start data
3
4
No. of registers of write data No. of registers of write data
5
6
CRC-16 check CRC-16 check
7
8
Error
Byte No.
1 Slave address
2 Function code (90 Hex)
3 Error code
CRC-16 check CRC-16 check
4
5
Note 1. When an error occurs, the MSB of the function code will be set to 1.
Note 2. A broadcast message uses the same DSR message format. The Slave
address is, however, always set to 00 and only register 0001 Hex (the RUN
command) and register number 0002 Hex (the frequency reference) can be
written.
H Example of Data Read
·In the following example, two-register data (the RUN command) is written from register
0002 Hex of the Inverter with a Slave address of 01.
D DSR Message
Byte No.
1 Slave address
2 Function code
3 Register No. of write start data Register No. of write start data
4
No. of registers of write data No. of registers of write data
5
6
Data
Data
Data
Chapter 7
MS B
LSB
MSB
LSB
Data
example
(Hex)
01
10
00
01
00
02
7-17