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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 2026-08-29 · LogrobotLM reference

Description

Big circles could not be distinguished.

Remedy · Remède

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

Frequently asked · Questions fréquentes

What does FANUC alarm CVIS-020 mean?
FANUC CVIS-020 (“Big circles cannot be distinguished”): Big circles could not be distinguished.
How do you troubleshoot FANUC alarm CVIS-020?
Determine if the calibration plate is tilted too much. Also, check to see if big circles are incorrectly found.

Related codes / Codes liés

CVIS-018The mask size is badCVIS-019The window size is badCVIS-021Exceed VisPool(%d 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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →