IDEC MicroSmart Pentra - Manual (Page 134)

13: T ROUBLESHOOTING
13-8 W EB S ERVER CPU M ODULE U SER ’ S M ANUAL FC9Y-B1278
Troubleshooting Diagrams
When one of the following problems is encountered, see the trouble shooting diagrams on the following pages.
Problem
Troubleshooting
Diagram
The PWR LED does not go on. Diagram 1
The RUN LED does not go on. Diagram 2
The ERR LED is on. Diagram 3
Input does not operate normally. Diagram 4
Output does not operate normally. Diagram 5
Communication between WindLDR on a computer and the Web server CPU module is not possible. Diagram 6
Cannot stop or reset operation. Diagram 7
Watchdog timer error occurs and the CPU does not run. Diagram 8
The interrupt/catch input cannot receive short pulses. Diagram 9
Frequency measurement does not work. Diagram 10
The calendar/clock does not operate correctly. Diagram 11
Analog I/O module does not work (END refresh type). Diagram 12
Data link communication is impossible. Diagram 13
Data is not transmitted at all in the user communication mode. Diagram 14
Data is not transmitted correctly in the user communication mode. Diagram 15
Data is not received at all in the user communication mode. Diagram 16
Data is not received correctly in the user communication mode. Diagram 17
Modbus master communication does not work. Diagram 18
WindLDR does not communicate with PLC via USB. Diagram 19
Modbus master communication request is slow. Diagram 20
E-mail is not sent. Diagram 21