Delta D25886 Manuel d'utilisateur Page 290

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Appendix B
B-4 DVP-MC operating manual
3. Modbus abnormality response code DVP10MC11T supports:
Abnormality response code Indication
0x01 Unsupportive function code
0x02 Unsupportive Modbus address
0x03 Data length exceeds the range
4. Modbus Function Code:
Function code: 03 to read one single or multi word-device register value
Request message data structure:
Data order Name Byte
Byte0 High byte
Byte1
Transaction identifier
Low byte
Byte2 High byte
Byte3
Protocol identifier
Low byte
Byte4 High byte
Byte5
Modbus data length
Low byte
Byte6 Modbus ID Low byte
Byte7 Function code Single byte
Byte8 High byte
Byte9
Read the start address of the word device in
DVP10MC11T
Low byte
Byte10 High byte
Byte11
Read the device address number in
DVP10MC11T
Counted by Words
Low byte
Response message data structure:
Data order Name Byte
Byte0 High byte
Byte1
Transaction identifier
Low byte
Byte2 High byte
Byte3
Protocol identifier
Low byte
Byte4 High byte
Byte5
Modbus data length
Low byte
Byte6 Modbus ID Single byte
Byte7 Function code Single byte
Byte8
The data length of the read word device content
value in DVP10MC11T
Counted by Bytes
Single byte
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