FANUC Alarm APSH-051 — WARN Connect or deassign UOP inputs
FANUC APSH-051 (“WARN Connect or deassign UOP inputs”): The robot cannot move while the UOP inputs are in this state. First check: You must either wire UOP inputs #1, #2, #3, and #8 high or deassign the UOP inputs and restart the controller.
Updated 2026-09-17 · LogrobotLM reference
Description
The robot cannot move while the UOP inputs are in this state.
Remedy
You must either wire UOP inputs #1, #2, #3, and #8 high or deassign the UOP inputs and restart the controller.
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 →