FANUC Alarm HOST-191 — WARN Invalid device type

FANUC HOST-191 (“WARN Invalid device type”): invalid port/insufficient memory First check: Verify that a correct port number is specified

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 →