Omron SYSDRIVE 3G3JV

7-16
D DSR Message
Byte No. Data
1 Slave address
2 Function code (10 Hex)
3
Register No. of write start data
4
g
5
Number of registers of write data (16 max.)
6
g()
7 Data of start register
8
Data of next register
MSB
9
g
LSB
10
Data of next register
MSB
11
g
LSB
12
Data of next register
MSB
13
g
LSB
: : :
n–1
CRC-16 check
n
D Response
Normal
Byte No. Data
1 Slave address
2 Function code (10 Hex)
3
Register No. of write start data
MS B
4
g
LSB
5
Number of registers of write data
MSB
6
g
LSB
7
CRC-16 check
8
Error
Byte No. Data
1 Slave address
2 Function code (90 Hex)
3 Error code
4
CRC-16 check
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.
Communications Chapter 7