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FANUC Alarm FRSY-020 — WARN RAM disk is full

FANUC FRSY-020 (“WARN RAM disk is full”): The RAM disk does not have enough available memory to perform the specified command. First check: Delete all unnecessary files and then purge the device.

Updated 2026-09-17 · LogrobotLM reference

Description

The RAM disk does not have enough available memory to perform the specified command. Note that copying a file to the FROM disk requires that the RAM disk be mounted with enough memory available to temporarily contain the file.

Remedy

Delete all unnecessary files and then purge the device. For more information on purging, refer to the PURGE_DEV Built-in in the FANUC Robotics SYSTEM RJ-2 Controller KAREL Reference Manual. If the device is still full, then backup the files to an off-line device and reformat the device after setting $FILE_MAXSEC to a larger number.

Related codes

FRSY-018WARN File is already openedFRSY-019WARN Command is not supportedFRSY-021WARN End of fileFRSY-022WARN File ID exceeded maximum

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 →