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FANUC Alarm ARC-127 — Cannot change stitch schedules

FANUC ARC-127 (“Cannot change stitch schedules”): An Arc Stitch instruction could not execute because a stitch weld was already executing. First check: Edit the program so the Arc Stitch instruction does not follow an Arc Stitch.

Updated 2026-09-17 · LogrobotLM reference

Description

An Arc Stitch instruction could not execute because a stitch weld was already executing. Stitch welds cannot include weld schedule changes.

Remedy

Edit the program so the Arc Stitch instruction does not follow an Arc Stitch.

Related codes

ARC-125Cannot start stitch in a weldARC-126Bad stitch weld or pitch lengthARC-128J motion during stitch weldARC-140MCC I/O parameter wrong(E:…, …)

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →