LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free →

FANUC Alarm CVIS-020 — Big circles cannot be distinguished

FANUC CVIS-020 (“Big circles cannot be distinguished”): Big circles could not be distinguished. First check: Determine if the calibration plate is tilted too much.

Updated 2026-09-17 · LogrobotLM reference

Description

Big circles could not be distinguished.

Remedy

Determine if the calibration plate is tilted too much. Also, check to see if big circles are incorrectly found.

Related codes

CVIS-018The mask size is badCVIS-019The window size is badCVIS-021Exceed VisPool(… Bytes)CVIS-030The model pattern is not trained.

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 →