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PLC User's Manual - Positioning Control Edition
Built-in Positioning Functions
13 Troubleshooting
13.1 LED Indicator Lamp Check
B - 172
Flashing
The PLC has one of the following
errors:
• Parameter error
• Syntax error
• Circuit error
Diagnose the PLC (PC), or check the programs using the
programming tool.
For countermeasures, refer to the following manual of the applied
PLC.
→ Programming manual
OFF
Errors that can stop the PLC are not
detected.
If an operation error is detected on the PLC, diagnose the PLC
(PC), or check the programs using the programming tool. There
is a good possibility that an "I/O configuration error", "parallel link/
communication error", or "operation error" has been detected.
Lamp
status
Status of PLC Troubleshooting