IDEC MicroSmart Pentra - Manual (Page 147)

W EB S ERVER CPU M ODULE U SER ’ S M ANUAL FC9Y-B1278 13-21
13: T ROUBLESHOOTING
Troubleshooting Diagram 14
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 TXD
instruction on?
Turn on the input to the TXD instruction.
Data is not transmitted at all in the
user communication mode.
Call IDEC for assistance.
YES
YES
YES
NO
NO
NO