Appendix B Abnormality response message data structure: Note: Suppose the number of the bit device where to be written in DVP10MC11T in request message is A (Byte 10, Byte 11), If A is divided by 8 with no remainder, the quotient is B; otherwise, the quotient is B +1. B or B+1 is the Byte number (Byte12) of bit devices in request message. The low bit （ Byte 13 ） of the value to be written in the bit device in DVP10MC11T in request message is the values of the start address (Byte8, Byte9) of bit devices in DVP10MC11T. Example: To set M0~M7=1000 0001,M8~M15=0001 1000, M16~M19=0110 in DVP10MC11T; the address of M0 is 0x0800 Request message:
“ 00 00 00 00 00 0A 01 0F 08 00 00 14 03 81 18 06” Response message: “00 00 00 00 00 06 01 0F 08 00 00 14” DVP-MC operating manual B-13 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 0x80+ function code Single byte Byte8 Abnormality response code Single byte