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ErrorLib — Industrial Fault Code Library

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093

Reference Position Not Established/Absolute PC Required

Fanuc · Alpha i 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 & Checklist

Click steps to track your progress.

  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.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

000Power-Down Required Parameter011Zero Feedrate Specified013Maximum Feedrate Zero
Source: Fanuc Alpha i series AC Servo Motor
Open Manual (Page 222)Search more codes in this manual