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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 → · Le diagnostic IA qui lit la sauvegarde de votre robot, sans rien téléverser.

FANUC Alarm CVIS-221 — Histogram tool: Fail to set reference position.

FANUC CVIS-221 (“Histogram tool: Fail to set reference position.”): An internal histogram error has occurred. First check: Document the events that led to the error, and contact your FANUC or FANUC Robotics technical representative.

Updated 2026-08-29 · LogrobotLM reference

Description

An internal histogram error has occurred.

Remedy · Remède

Document the events that led to the error, and contact your FANUC or FANUC Robotics technical representative.

Frequently asked · Questions fréquentes

What does FANUC alarm CVIS-221 mean?
FANUC CVIS-221 (“Histogram tool: Fail to set reference position.”): An internal histogram error has occurred.
How do you troubleshoot FANUC alarm CVIS-221?
Document the events that led to the error, and contact your FANUC or FANUC Robotics technical representative.

Related codes / Codes liés

CVIS-219Histogram tool is not trained.CVIS-220Histogram tool: Fail to get reference position.CVIS-222Sub tool is not trained.CVIS-223Conditional Execution: Fail to set measurement.

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 →