Appendix A. Modbus Protocol
MS300
A-5
ASCII mode:
Command Message Response Message
Address
Address
Function
Function
Starting register
Number of register
(count by byte)
Content of starting
register 2102H
Number of register
(count by word)
Content of register 2103H
LRC Check
END
LRC Check
END
RTU mode:
Command Message Response Message
Starting data register
Number of register
(count by byte)
04H
Number of register
(count by word)
Content of register
address 2102H
Content of register
address 2103H
4. 06H: single write, write single data to a register.
Example: Writing data 6000 (1770H) to register 0100H. AMD address is 01H.
ASCII mode:
Command Message Response Message
Address
Address
Function
Function
Target register
Target register
Register content
Register content
LRC Check
LRC Check
END
END
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