LogrobotLM

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FANUC Alarm APSH-050 — WARN Cell IO setup is invalid

FANUC APSH-050 (“WARN Cell IO setup is invalid”): Signals which are required for this cell IO configuration have not been configured. First check: Check the messages posted previous to the in the error log for the names of the incorrect signals.

Updated 2026-09-17 · LogrobotLM reference

Description

Signals which are required for this cell IO configuration have not been configured.

Remedy

Check the messages posted previous to the in the error log for the names of the incorrect signals. Fix the IO setup of these signals and cold start the controller.

Related codes

APSH-048WARN PLC comm error - invert checkAPSH-049WARN …APSH-051WARN Connect or deassign UOP inputsAPSH-052WARN Critical UOP inputs are LOW

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 →