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FANUC Alarm MOTN-255 — STOP OFIX: Detect J4 is not 0

FANUC MOTN-255 (“STOP OFIX: Detect J4 is not 0”): Detect J4 is not zero angle during interpolation. First check: Confirm start and destination position are both J4 = 0 position.

Updated 2026-09-17 · LogrobotLM reference

Description

Detect J4 is not zero angle during interpolation.

Remedy

Confirm start and destination position are both J4 = 0 position.

Related codes

MOTN-253STOP OFIX: Motion type mismatchMOTN-254STOP OFIX: Detect large spinMOTN-256STOP OFIX: TCP config limitMOTN-257STOP Wrist start angle mismatch

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