Chapter 13 Warning CodesMS300
476
Communication error 4
(CE4)
RS-485 Modbus data is written to read-only address
When the data is written to read-only address
Warning Setting Parameter
“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.
Incorrect communication
command from 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 is necessary.
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