10043

Linear Motor Closed Loop Setting Error

Fanuc · Alpha i Series Servo Amplifier

What does 10043 mean?

This invalid parameter setting alarm occurs when a linear motor is in use, and the closed loop is inadvertently set. For series other than the Series 9080, the closed loop function is incompatible with linear motors.

Common Causes

  • The initial configuration or calibration of the linear motor's closed-loop system failed.
  • Incorrect parameters are set for the linear motor's position feedback.
  • A physical limit switch or encoder setting is invalid.
  • The linear motor's internal reference point is not established correctly.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Adjust the parameter settings to disable the closed loop configuration when operating with a linear motor.

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Verified technical data. Last updated: March 2026

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Source: Fanuc Alpha i Series Servo Amplifier