LogrobotLM

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FANUC Alarm FRSY-018 — WARN File is already opened

FANUC FRSY-018 (“WARN File is already opened”): The requested command cannot be performed because the file is already opened. First check: Close the file before specifying the command.

Updated 2026-09-17 · LogrobotLM reference

Description

The requested command cannot be performed because the file is already opened.

Remedy

Close the file before specifying the command.

Related codes

FRSY-016WARN Invalid file typeFRSY-017WARN File not openFRSY-019WARN Command is not supportedFRSY-020WARN RAM disk is full

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 →