FANUC Alarm BELL-120 — WARN I/O Hardware not installed
FANUC BELL-120 (“WARN I/O Hardware not installed”): I/O Hardware selected is physically not installed First check: Make sure I/O Hardware that is being selected is installed correctly!
Updated 2026-09-17 · LogrobotLM reference
Description
I/O Hardware selected is physically not installed
Remedy
Make sure I/O Hardware that is being selected is installed correctly!
Related codes
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 →