FANUC Alarm PALT-021 — WARN IO_STATUS error occurred

FANUC PALT-021 (“WARN IO_STATUS error occurred”): An I/O error occurred during data transfer First check: Cold start the controller and retry.

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 →