IDEC FC4A-C10R2 User Manual page 498

29: T
ROUBLESHOOTING
Troubleshooting Diagram 11
Data is not received at all
in the user communication mode.
communication cable
connected correctly?
Is the input to the
RXD instruction on?
Is the PWR LED on?
Call IDEC for assistance.
29-18
Is the
NO
YES
NO
YES
NO
YES
« FC4A M
ICRO
Make sure of correct wiring.
Turn on the input to the RXD instruction.
See Troubleshooting Diagram 1
"The PWR LED does not go on."
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