093

Reference Position Not Established/Absolute PC Required

Fanuc · αi series AC Servo Motor

What does 093 mean?

A first to third reference position return cannot be executed because the reference position has not yet been established, or an external setting was attempted without an Absolute pulse coder.

Common Causes

  • The reference position has not been established.
  • Attempted external reference position setting without using an Absolute pulse coder.

Repair Steps

  1. 1

    Execute the procedure to set the reference position.

  2. 2

    For external reference position settings, verify that an Absolute pulse coder is correctly installed and configured.

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Verified technical data. Last updated: March 2026
Source: Fanuc αi series AC Servo Motor
Fanuc Error 093: Reference Position Not Established/Absolute PC Required — Troubleshooting Guide | ErrorLib