ABB Error 40277 — Undo Aborted

What it means · Ce que ça veut dire

Undo Aborted — ABB robot hardware event on the Undo Aborted (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

Task arg The program execution was stopped while processing the UNDO statements. UNDO was not fully executed. The undo-processing was executing routine arg when it was aborted. 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 Undo Aborted, 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.
• If the processing of UNDO takes too long, try to remove timeconsuming instructions such as TPWrite from the UNDO-clause.
• If the undo processing never seems to finish, make sure any loops in the undo-statements are correct.

Frequently asked · Questions fréquentes

What does ABB error 40277 mean?

ABB 40277 (“Undo Aborted”): Undo Aborted — ABB robot hardware event on the Undo Aborted (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 40277?

Inspect the Undo Aborted, 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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