Appendix B Function code: 0x02 to read bit-device register value Request message data structure: Response message data structure:
DVP-MC operating manual B-9 Data order Name Byte Byte0 Transaction identifier High byte Byte1 Low byte Byte2 Protocol identifier High byte Byte3 Low byte Byte4 Modbus data length High byte Byte5 Low byte Byte6 Modbus ID Single byte Byte7 Function code Single byte Byte8 The start address of the read bit device in DVP10MC11T High byte Byte9 Low byte Byte10 The number of the read bit device in DVP10MC11T High byte Byte11 Low byte Data order Name Byte Byte0 Transaction identifier High byte Byte1 Low byte Byte2 Protocol identifier High byte Byte3 Low byte Byte4 Modbus data length High byte Byte5 Low byte Byte6 Modbus ID Single byte Byte7 Function code Single byte Byte8 The Byte number of the read bit device Single byte Byte9 The status value of the bit device which has been read Single byte …
The status value of the bit device which has been read Single byte Byte n The status value of the bit device which has been read Single byte