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-502 — Illegal overrun length (F:%d^1)

FANUC FRCE-502 (“Illegal overrun length (F:%d^1)”): The value of 'Individual Diff. First check: 'Individual Diff.

Updated 2026-08-29 · LogrobotLM reference

Description

The value of 'Individual Diff. (+)' in Basic Data is illegal.

Remedy · Remède

'Individual Diff. (+)' must be between 0 and 10000.

Frequently asked · Questions fréquentes

What does FANUC alarm FRCE-502 mean?
FANUC FRCE-502 (“Illegal overrun length (F:%d^1)”): The value of 'Individual Diff. (+)' in Basic Data is illegal.
How do you troubleshoot FANUC alarm FRCE-502?
'Individual Diff. (+)' must be between 0 and 10000.

Related codes / Codes liés

FRCE-500Illegal reduction ratio (F:%d^1)FRCE-501Illegal velocity adjust switch (F:%d^1)FRCE-508AIT X direction environment NG (F:%d^1)FRCE-509AIT Y direction environment NG (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 →