Manual

WEB SERVER CPU MODULE USER’S MANUAL FC9Y-B1278 13-21

13: TROUBLESHOOTING

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