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FANUC Alarm CVIS-051 — Laser window is invalid

FANUC CVIS-051 (“Laser window is invalid”): No laser measurement area has been set up or a set laser measurement area is too small. First check: Re-teach a measurement area.

Updated 2026-09-17 · LogrobotLM reference

Description

No laser measurement area has been set up or a set laser measurement area is too small.

Remedy

Re-teach a measurement area. The minimum allowable laser measurement area is 8 pixels in both height and width. If it is necessary to measure laser beams in a smaller area, increase the size of the measurement area and then limit it by setting up a mask.

Related codes

CVIS-043The search window is too small.CVIS-050Exposure is invalidCVIS-052Calibration data is not perspectiveCVIS-053Calculation is not converged.

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 →