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

FANUC Alarm FRCE-421 — Search Range over (F:%d^1)

FANUC FRCE-421 (“Search Range over (F:%d^1)”): The robot moved beyond the search range limit before finishing the search. First check: Check the parameter 'search range' Make the velocity command smaller Set the 'reverse switch' ON

Updated 2026-08-29 · LogrobotLM reference

Description

The robot moved beyond the search range limit before finishing the search.

Remedy · Remède

Check the parameter 'search range' Make the velocity command smaller Set the 'reverse switch' ON

Frequently asked · Questions fréquentes

What does FANUC alarm FRCE-421 mean?
FANUC FRCE-421 (“Search Range over (F:%d^1)”): The robot moved beyond the search range limit before finishing the search.
How do you troubleshoot FANUC alarm FRCE-421?
Check the parameter 'search range' Make the velocity command smaller Set the 'reverse switch' ON

Related codes / Codes liés

FRCE-416Unknown F/C mode (F:%d^1)FRCE-420Search Retry Limit (F:%d^1)FRCE-422Search Frc/Vel wrong (F:%d^1)FRCE-423Search Vel order error (F:%d^1)

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 →