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ErrorLib — Industrial Fault Code Library

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PS5074

G/M Code Conflict

Fanuc · Series 30i/31i/32i-MODEL B Parameter

What does PS5074 mean?

This alarm indicates a program error related to the incorrect usage or combination of G and M codes within a single block, or a conflict in programming modes. It can occur if more than three M codes are specified in one block, if G codes from the same group are specified together (excluding G90/G91), or if absolute and incremental programming for the same axis are specified simultaneously in G code system A with a lathe system.

Common Causes

  • Conflict between G-code and M-code commands.
  • Simultaneous execution of incompatible G and M codes.
  • Incorrect sequence of motion and miscellaneous function codes.
  • Programming error with G/M code interpretation.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Review the NC program block where the alarm occurred to identify the specific G/M code conflict.

  2. 2

    Verify that no more than three M codes are specified in any single program block.

  3. 3

    Ensure that all G codes within the same block belong to different G code groups, with the exception of G90 and G91.

  4. 4

    If using G code system A with a lathe, confirm that absolute and incremental programming commands are not specified for the same axis within the same program block.

Browse all codes in this manual (12)
Verified technical data. Last updated: April 2026

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Source: FANUC Series 30i/31i/32i-MODEL B Parameter
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