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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.

ABB Error 31114 — CPU main fault

Error / Erreur

🇫🇷 CPU principal

CALCULATEURS, MÉMOIRE & COMMUNICATION (31xxx–33xxx)

ABB 31114 (“CPU main fault”): CPU main fault — ABB robot hardware event on the CPU main (S4/S4C). Likely part: CPU principal (CPU main).

Updated 2026-08-29 · LogrobotLM reference

What it means · Ce que ça veut dire

CPU main fault — ABB robot hardware event on the CPU main (S4/S4C). Specific to this controller generation. Severity: Critical. Field diagnosis below (French); your robot's own manual remains authoritative.

Erreur de bus de fond de panier VME lors de l'accès aux voyants LED sur la carte d'ordinateur principal.

What to check · Que vérifier

  • Inspect the CPU main, its wiring and connections first.
  • Match this code against your robot's event-log timeline before swapping parts.
  • Follow the French field checks below — they are the tested sequence for this fault.
  • Remplacer la carte d'ordinateur principal.
  • Remplacer la carte d'E/S robot.
  • À savoir : Défaut d'adressage matériel propre au bus VME d'époque S4.

Part to check / replace · Pièce à contrôler / remplacer

ABB 31114 points to the hardware below — start here before ordering. · 31114 met en cause l'organe ci-dessous : commencez par là.

Tap a part for every code that points to it — and verify the exact variant for your controller before ordering. · Touchez une pièce pour tous les codes qui la citent ; vérifiez la variante exacte avant commande.

Frequently asked · Questions fréquentes

What does ABB error 31114 mean?
ABB 31114 (“CPU main fault”): CPU main fault — ABB robot hardware event on the CPU main (S4/S4C). Specific to this controller generation. Severity: Critical. Field diagnosis below (French); your robot's own manual remains authoritative.
How do you troubleshoot ABB error 31114?
Inspect the CPU main, its wiring and connections first. Match this code against your robot's event-log timeline before swapping parts. Follow the French field checks below — they are the tested sequence for this fault.
Which part is involved in ABB 31114?
31114 points to CPU principal (CPU main). Confirm the real cause against the robot backup before replacing a part.

Related codes / Codes liés

31108Serial link RS232 fault31115Link console fault31226Floppy disk drive fault

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 →