FANUC Alarm MARL-021 — WARN … exists. Not loaded
Manufacturer wording — WARN %s exists. Not loaded
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC MARL-021 (“WARN … 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 2026-09-17 · LogrobotLM reference
Description
An attempt was made to copy a file which is already loaded on the controller.
Remedy
This is a warning message.
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 →