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Troubleshooting
3. Troubleshooting
If trouble occurs in the connection with the robot controller while starting up the CC-Link
system or during operation, check the following items in listed order.
3-1 Robot controller front panel LED confirmation
3-2 Programming unit error display confirmation
3-3 CC-Link compatible module LED confirmation
3-4 Confirmation from master station PLC
3.1 Robot controller front panel LED confirmation
[Confirmation item 1]
<Confirmation details>
• The “PWR” LED is OFF.
<Cause>
• Power is not being supplied to the robot controller.
<Countermeasures>
• Measure the voltage at the AC power input terminal of the power connector with a
multimeter and check that the rated voltage is being supplied.
* Refer to the robot controller owner’s manual for the rated voltage for the robot con-
troller.
[Confirmation item 2]
<Confirmation details>
• The “ERR” LED is ON.
<Cause>
• The robot controller is in emergency stop.
• A major error has occurred in the robot controller.
<Countermeasures>
• Confirm the error message displayed on the programming unit.
• Take measures by following the troubleshooting section in the robot controller in-
struction manual.
* Refer to the robot controller instruction manual for details on the errors.