Chapter 13 Warning Codes|MH300
ID No.
Display Warning Name Description
4
4 (CE4)
RS-485 Modbus data is written to read-only
address.
Action and Reset
Action condition When the data is written to read-only address.
Action time Immediately
Warning treatment parameter N/A
Reset method
“Warning” occurs when Pr.09-02=0 and the motor drive keeps running.
The drive resets automatically when receiving
the correct written address
of communication data.
Reset condition Immediately reset
Record N/A
Cause Corrective Actions
Incorrect communication
command from the upper unit
Check if the communication command is correct.
Malfunction caused by
interference
Verify the wiring and grounding of the communication circuit. It is
recommended to separate the communication circuit from the main
circuit, or wire in 90 degree for effective anti-interference performance.
Different communication setting
from the upper unit
Check if the setting for Pr.09-04 is the same as the setting for the upper
unit.
Disconnection or bad
connection of the cable
Check the cable and replace it if necessary.
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