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Baud Rate and Parity
The baud rate and parity is set simultaneously using a single register write command (function code 0x06) of address 0x0001. The
upper byte defines the parity, and the lower byte defines the baud rate from a list of standards.
Parity
None
Odd
Even
Baud Rate
9600
19200
38400
57600
115200
Request
Function Code
Register Address
Register Value
Response
Function Code
Register Address
Register Value
Error
Error Code
Exception Code
The serial configuration can also be read using a read holding registers command (function code 0x03) of address 0x0000.
Request
Function Code
Register Address
Register Value
Response
Function Code
Register Address
Register Value
Modbus Configuration & Commands
1 byte
2 bytes
2 bytes
1 byte
2 bytes
2 bytes
1 byte
1 bytes
1 byte
2 bytes
2 bytes
1 byte
2 bytes
2 bytes
0x00
0x01
0x02
0x00
0x01
0x02
0x03
0x04
0x06
0x0001
0x0200
0x06
0x0001
0x0200
0x86
0x03 (Illegal Data Value)
0x03
0x0001
0x0001
0x03
0x0002
0x0200
14
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