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.

ABB Error 31602 — EPROM memory fault

Error / Erreur

🇫🇷 Mémoire EPROM

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

ABB 31602 (“EPROM memory fault”): EPROM memory fault — ABB robot hardware event on the EPROM memory (S4/S4C). Likely part: Mémoire EPROM (EPROM memory).

Updated 2026-08-29 · LogrobotLM reference

What it means · Ce que ça veut dire

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

Erreur de somme de contrôle (checksum) sur l'EPROM inférieure (LOW PROM) de la carte ordinateur.

What to check · Que vérifier

  • Inspect the EPROM memory, 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 les puces EPROM défectueuses sur la carte de commande du robot.
  • À savoir : Défaut d'EPROM amovible, obsolète.

Part to check / replace · Pièce à contrôler / remplacer

ABB 31602 points to the hardware below — start here before ordering. · 31602 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 31602 mean?
ABB 31602 (“EPROM memory fault”): EPROM memory fault — ABB robot hardware event on the EPROM memory (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 31602?
Inspect the EPROM memory, 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 31602?
31602 points to Mémoire EPROM (EPROM memory). Confirm the real cause against the robot backup before replacing a part.

Related codes / Codes liés

31108Serial link RS232 fault31114CPU main fault31115Link console fault

Same hardware involved / Même matériel en cause

31601Mémoire EPROM

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 →