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ErrorLib — Industrial Fault Code Library

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3503

Machining Area Unavailable (Tool Too Large)

Fanuc · Series 0i Manual Guide

What does 3503 mean?

This MC alarm (specific to Series 30i) indicates that no machining area can be utilized. The issue stems from the tool specified in the machining program being too large for the designated machining area, making the operation impossible.

Common Causes

  • Tool holder or spindle attachment interferes with the workpiece or fixture.
  • Machining program designed for a different tool size or type.
  • Incorrect tool length or radius offset entered (e.g., P10-02).
  • Collision detection system has identified a potential conflict.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Modify the machining program to specify and use a smaller tool that fits within the defined machining area.

Browse all codes in this manual (25)
Verified technical data. Last updated: April 2026

Related Faults

3003Machining Area Unavailable (Tool Too Large)3004Number of Cuts Exceeded Limit3005Invalid Machining Start Point
Source: Fanuc Series 0i Manual Guide
Open Manual (Page 843)Search more codes in this manual