Appendix I
RS485 Communication Protocol
117
0002H: Reverse running
0003H: Inverter is in standby
0004H: Fault is happening
Parameter lock password verification: (If the return code is8888H, it indicates that
password verification is passed)
Password address
Enter password
1F00H
*****
Parameter lock command: (write only)
Lock password
command address
Lock password command content
1F01H
55AAH
Digital output terminal control: (write only)
Inverter fault description:
Inverter fault
address:
Fault
code
Inverter fault information:
8000H
0000: No fault
E.oUP
0001: Inverter unit U-phase
E.oUP
0002: Inverter unit V-phase
E.oUP
0003: Inverter unit W-phase
E.oC1
0004: Acceleration overcurrent
E.oC2
0005: Deceleration overcurrent
E.oC3
0006: Constant speed overcurrent
E.oU1
0007: Acceleration overvoltage
E.oU2
0008: Deceleration overvoltage
E.oU3
0009: Constant speed overvoltage
E.LU
000A: Bus undervoltage fault
E.oL1
000B: Motor Overload
E.oL2
000C: Inverter overload
Reserved
Reserved
Reserved
E.oH2
0011: Inverter module overheating fault
E.SET
0012: External fault
E.CE
0013: Communication fault
E.oCC
0014: Current detection fault
E.TE
0015: Motor auto tunning fault
E.EEP
0016: EEPROM operation fault
E.STd
0017: STD disconnection fault
Reserved
END
Reserved
Data on communication failure information description (fault code) :
Communication fault message (fault code) : when the slave device responds,
function code field and fault address are used to indicate whether it is a normal response
(correct) or an error (called exception response) . If it is the normal response, the slave
device will respond corresponding function code and data address or sub-function code.
If it is the exception response, the slave device returns a code equivalent to the normal
