Service manual

www.enc.net.cn/en Tel/Fax:[phone] Modbus communication protocol
132
C-07 Power on running time 1007H
C-08 Accumulative running time 1008H
C-09 Input terminal status 1009H
C-10 Output terminal status 100AH
C-11 Analog input VCI value 100BH
C-12 Analog input CCI value 100CH
C-13 Analog input YCI value 100DH
C-14 External impulse frequency 100EH
11.6 Communication error processing
Inverter receiving data packet detection error, it finds reading&writing
parameter address or parameter value invalid, so reply to the host with
communication error response packet. Communication error response packet (host
command code +80H) as command code, with 1 byte error code.
Format for communication error response packet as follows:
ADR 01H
CMD 83H/86H
Communication error code
01H~06H (for details, please check below
table)
Low byte of CRC checksum Obtain by calculating
High byte of CRC checksum Obtain by calculating
Meaning for each communication error code value as follows:
Communication error code value Type of communication error
0x01 CRC checksum error
0x02 Command code illegal
0x03 Register address visited illegal
0x04 Value to register illegal
0x05 Not allow to modify parameters
0x06 Register number read illegal
0x07 Parameter protected by password
0x09 User password verification error