IDEC MicroSmart Pentra - Manual (Page 149)

W EB S ERVER CPU M ODULE U SER ’ S M ANUAL FC9Y-B1278 13-23
13: T ROUBLESHOOTING
Troubleshooting Diagram 16
See Troubleshooting Diagram 1
“The PWR LED does not go on.”
Is the PWR LED on?
Is the communication cable
connected correctly?
Make sure of correct wiring.
Is the input to the RXD
instruction on?
Turn on the input to the RXD instruction.
Data is not received at all in the
user communication mode.
Call IDEC for assistance.
YES
NO
NO
YES
YES
NO