FANUC Alarm HOST-129 — WARN Receiver error
FANUC HOST-129 (“WARN Receiver error”): Data received from external device is invalid. First check: The error can be cleared by Stopping and Starting the Tag in Host Comm Setup Menu.
Updated 2026-09-17 · LogrobotLM reference
Description
Data received from external device is invalid. Most likely caused by electrical noise on receivers.
Remedy
The error can be cleared by Stopping and Starting the Tag in Host Comm Setup Menu.
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 →