Omron SYSDRIVE 3G3MV A2002, User Manual

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D
Response
Normal
Byte No. Data
1 Slave address
2 Function code (03 Hex)
3 No. of bytes of attached data
4 Data of start register MS B
5
Data of start register
LSB
6
Data of next register
MSB
7
Data of next register
LSB
8
Data of next register
MSB
9
Data of next register
LSB
: : :
n--1 CRC-16 check
n
CRC-16 check
Error
Byte No. Data
1 Slave address
2 Function code (83 Hex)
3 Error code
4
CRC-16 check
5
CRC-16 check
Note When an error occurs, the MSB of the function code will be set to 1.
H
Example of Data Read
·
In the following example, four-register data (status signal data) is read from register
0020 Hex of the Inverter with a Slave address of 02.
Communications Chapter 7