FANUC Alarm MOTN-391 — Motion option cfg file missing

FANUC MOTN-391 (“Motion option cfg file missing”): Motion option configuration file is not loaded or cannot be read. First check: Re-load correct motion option config file.

Updated 2026-09-17 · LogrobotLM reference

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 →