LogrobotLM

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FANUC Alarm GUID-253 — WARN Invalid system variable.

FANUC GUID-253 (“WARN Invalid system variable.”): Invalid system variable. First check: Check the spelling of the system variable.

Updated 2026-09-17 · LogrobotLM reference

Description

Invalid system variable. Cannot access to the specified system variable name.

Remedy

Check the spelling of the system variable.

Related codes

GUID-251WARN Invalid data range.GUID-252WARN Invalid I/O Port setting.GUID-254WARN Invalid torque setup.GUID-300WARN No contact with the chuck.

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 →