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ErrorLib — Industrial Fault Code Library

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3512

G-Code Combination Invalid

Fanuc · Series 0i Manual Guide

What does 3512 mean?

This MC alarm (specific to Series 30i) 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

  • The program contains an invalid sequence or combination of G-codes.
  • Attempt to use G-codes with mutually exclusive functions simultaneously.
  • NC program syntax error with G-code ordering or parameter values.

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