FANUC Alarm RPM-027 — Illegal arc instruction.

FANUC RPM-027 (“Illegal arc instruction.”): Stand alone arc start used First check: Use motion attached arc start instruction

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 →