204
7-2. Troubleshooting
7-2. Troubleshooting
1. Points to be Checked When an Error Occurs
When an abnormality is detected, check the following points.
• If the ERR. LED is turned ON,
refer to page 205, ■ When an ERR. LED is ON.
• If the ALARM LED is turned ON,
refer to page 209, ■ When an ALARM LED is ON.
• If the all LEDs are turned OFF,
refer to page 210, ■ When all LEDs are OFF.
• If the output do not work,
refer to page 211, ■ Diagnosing output malfunction.
• If the communication error is detected by the NPST-GR Software,
refer to page 214, ■ When “PLC = COMM. ERR” is displayed on the NPST-GR screen.
• If the protect error is detected by the programming tool,
refer to page 215, ■ When “PROTECT ERROR” is displayed.
Note:
• Check the entire system including peripheral devices, referring the following:
- Observe what is happening.
- Check for error repetition.
- Check the status of indicators.
- Check that power is properly supplied to the programmable controller.
- Check whether the trouble detected is in the programmable controller or in other devices.
- Check whether the trouble detected is in the I/O section or other parts.
- Check whether there is problem with the program or not.
To Next Page
Loading...
Need help?
General
