FANUC Alarm SYST-153 — WARN Cannot SIM/UNSIM DO’s in AUTO mode

FANUC SYST-153 (“WARN Cannot SIM/UNSIM DO’s in AUTO mode”): Attempt to force output signal while controller is in AUTO mode First check: Exit AUTO mode before doing this operation

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 →