Service manual

www.enc.net.cn/en Tel/Fax:[phone] Modbus communication protocol
130
The contents of slave reply：
ADR 01H
CMD 03H
Parameter value bytes 04H
Address 0000H content high byte 00H
Address 0000H content low byte 01H
Address 0001H content high byte 13H
Address 0001H content low byte 88H
CRC check value low byte Be calculated
CRC check value high byte Be calculated
11.4.3 Host write slave parameter
Command code 06H. Host can write an parameter by initiating a
communication transaction .
E.g.,The decimal system 5000 (1388H) written to the inverter 0001H address
whose slave address is 02，host command including：
ADR 02H
CMD 06H
Parameter address high byte 00H
Parameter address low byte 01H
Parameter value high byte 13H
Parameter value low byte 88H
CRC check value low byte Be calculated
CRC check value high byte Be calculated
The contents of slave reply：
ADR 02H
CMD 06H
Parameter address high byte 00H
Parameter address low byte 01H
Address 0903H content high byte 13H
Address 0903H content low byte 88H
CRC check value low byte Be calculated
CRC check value high byte Be calculated
11.5 Data communication address allocation
11.5.1 Function code Fd-F0 group communication address
Inverter function parameter’s MODBUS communication address addressing
process follows PPnn way: PP means high byte of the address, corresponding to
function parameter’s group number; nn means low byte of the address,
corresponding to function code parameter’s group internal code. For example:
F3.21 function code’s communication address is 0315H, 03H is the hex form of
group number 3, 15H is the hex form of grop internal code 21.