ABB Error 71321 — Invalid I/O access level

What it means · Ce que ça veut dire

Invalid I/O access level — ABB robot hardware event on the Invalid I/O access level (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

The I/O configuration is invalid. The I/O signal arg has a reference to an invalid/undefined I/O access level arg . All I/O signals must either omit the access level or refer to an existing access level. This I/O signal has been rejected. Le texte constructeur de ce code n'existe qu'en anglais dans les manuels ABB dont il provient. Il est reproduit tel quel ci-dessus ; le manuel de votre robot fait foi.

What to check · Que vérifier

• Inspect the Invalid I/O access level, 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.
• Change I/O access level to one that exist or define a new I/O access level.

Frequently asked · Questions fréquentes

What does ABB error 71321 mean?

ABB 71321 (“Invalid I/O access level”): Invalid I/O access level — ABB robot hardware event on the Invalid I/O access level (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

How do you troubleshoot ABB error 71321?

Inspect the Invalid I/O access level, 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.

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