ABB Error 0081 — I/O bus fault
Error / Erreur🇫🇷 Bus d'E/S
GÉNÉRATION S2 / S3 — CODES HISTORIQUES (5xx & SOUS-CODES)
ABB 0081 (“I/O bus fault”): I/O bus fault — ABB robot hardware event on the I/O bus (S2/S3). Likely part: Bus d'E/S (I/O bus).
Updated 2026-08-29 · LogrobotLM reference
What it means · Ce que ça veut dire
I/O bus fault — ABB robot hardware event on the I/O bus (S2/S3). Seen across controller generations. Severity: Critical. Field diagnosis below (French); your robot's own manual remains authoritative.
Données corrompues ou erronées lues en provenance du bus d'E/S.
What to check · Que vérifier
- Inspect the I/O bus, 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.
- Vérifier la carte logique d'E/S et s'assurer du bon verrouillage mécanique de la carte d'ordinateur.
- À savoir : Remplacé par les pannes de communication de bus de terrain d'armoire sur IRC5.
Part to check / replace · Pièce à contrôler / remplacer
ABB 0081 points to the hardware below — start here before ordering. · 0081 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 0081 mean?
- ABB 0081 (“I/O bus fault”): I/O bus fault — ABB robot hardware event on the I/O bus (S2/S3). Seen across controller generations. Severity: Critical. Field diagnosis below (French); your robot's own manual remains authoritative.
- How do you troubleshoot ABB error 0081?
- Inspect the I/O bus, 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 0081?
- 0081 points to Bus d'E/S (I/O bus). Confirm the real cause against the robot backup before replacing a part.
Related codes / Codes liés
Same hardware involved / Même matériel en cause
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 →