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FANUC Alarm MARL-021 — WARN %s exists. Not loaded

FANUC MARL-021 (“WARN %s exists. Not loaded”): An attempt was made to copy a file which is already loaded on the controller. First check: This is a warning message.

Updated 2026-08-29 · LogrobotLM reference

Description

An attempt was made to copy a file which is already loaded on the controller.

Remedy · Remède

This is a warning message.

Frequently asked · Questions fréquentes

What does FANUC alarm MARL-021 mean?
FANUC MARL-021 (“WARN %s exists. Not loaded”): An attempt was made to copy a file which is already loaded on the controller.
How do you troubleshoot FANUC alarm MARL-021?
This is a warning message.

Related codes / Codes liés

MARL-019WARN MRTool abortedMARL-020WARN Product number not enteredMARL-022WARN Loading error - %sMARL-023PAUSE PosReg %s could not be set

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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →