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ErrorLib — Industrial Fault Code Library

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3012

G-Code Combination Invalid

Fanuc · Series 0i Manual Guide

What does 3012 mean?

This P/S alarm indicates that G codes specified in the program cannot be combined as programmed. Specifically, a figure block has been paired with a machining type block that is not compatible or available for that figure type, leading to an invalid operation sequence.

Common Causes

  • An unsupported or incorrect combination of G-codes was detected in the program.
  • Conflicting G-code commands present in the NC program sequence.
  • Specific G-code functions require specific parameters or preceding codes which are absent.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Modify the machining program to specify a correct and compatible combination of machining type block and figure block.

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