ER0~2 LED

Force Sensor Communication Error

Fanuc · R-30iB Mate + Mate Plus Robot

What does ER0~2 LED mean?

The ER0, ER1, or ER2 LEDs illuminate when an error occurs in communication with the force sensor. This indicates a potential issue with the sensor's interface unit or its connection cable.

Repair Steps

  1. 1

    Remove the cable connected to the CRS50 connector, turn on the power, and check whether the ER0~2 LEDs change.

  2. 2

    If one of the ER0~2 LEDs lights up after re-powering with the cable removed, replace the sensor I/F unit.

  3. 3

    If all of the ER0~2 LEDs are turned off after re-powering with the cable removed, check the sensor connection cable connected to CRS50 for any abnormalities.

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Verified technical data. Last updated: March 2026
Source: Fanuc R-30iB Mate + Mate Plus Robot