Manual

WEB SERVER CPU MODULE USER’S MANUAL FC9Y-B1278 13-23

13: TROUBLESHOOTING

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