ABB Error 50403 — AW board not connected

What it means · Ce que ça veut dire

AW board not connected — ABB robot hardware event on the AW board not connected (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

During startup, no communication was established with unit <arg> on bus <arg>. It is not possible to access the unit or signals on the unit, since it is currently not communicating with the controller. 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 AW board not connected, 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.
• probable : The unit is either not connected to the system, or it is connected, but has been assigned the wrong address.
• Make sure all unit addresses match the configuration.
• Make sure all addresses are unique, and not used by more than one unit.
• Change the address and/or connect the missing unit.
• If you changed the address, the power supply to the unit must be cycled (switched OFF and then back ON), to make sure the address has been changed.

Frequently asked · Questions fréquentes

What does ABB error 50403 mean?

ABB 50403 (“AW board not connected”): AW board not connected — ABB robot hardware event on the AW board not connected (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 50403?

Inspect the AW board not connected, 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.

Related codes / Codes liés