LogrobotLM

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FANUC Alarm GUID-251 — WARN Invalid data range.

FANUC GUID-251 (“WARN Invalid data range.”): Invalid data range. First check: Please check the max_value and min_value in under the setup.

Updated 2026-09-17 · LogrobotLM reference

Description

Invalid data range. The specified data range is invalid.

Remedy

Please check the max_value and min_value in under the setup.

Related codes

GUID-232STOP Collision, Axis …GUID-250WARN Software loading error.GUID-252WARN Invalid I/O Port setting.GUID-253WARN Invalid system variable.

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 →