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6-2. Troubleshooting
1. Points to be Checked When an Error Occurs
When an abnormality is detected, check the following points.
• If the ERR. LED is ON,
refer to page 115,
■
When an ERR. LED is ON.
• If the ALARM LED is ON,
refer to page 117,
■
When an ALARM LED is ON.
• If the all LEDs are OFF,
refer to page 117,
■
When all LEDs are OFF.
• If the output does not work,
refer to page 118,
■
Diagnosing output malfunction.
• If the communication error is detected by the NPST-GR Software,
refer to page 121,
■
When “PLC = COMM. ERR” is displayed on the NPST-GR screen.
• If the PROTECT ERROR is detected by the programming tool,
refer to page 122,
■
When “PROTECT ERROR” is displayed.
Note:
• Check the entire system including peripheral devices, referring the followings:
- 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.
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6-2. Troubleshooting
Содержание FP-M Hardware
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