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 20371 — A default mechanical unit group is used

Error / Erreur

🇫🇷 A default mechanical unit group is used

ABB — CATALOGUE PRODUCTION

ABB 20371 (“A default mechanical unit group is used”): A default mechanical unit group is used — ABB robot hardware event on the A default mechanical unit group is used (IRC5).

Updated 2026-08-29 · LogrobotLM reference

What it means · Ce que ça veut dire

A default mechanical unit group is used — ABB robot hardware event on the A default mechanical unit group is used (IRC5). Specific to this controller generation. Severity: Major. Field diagnosis below (French); your robot's own manual remains authoritative.

The configuration of task arg has no connection to arg. The attribute arg is required in a multimove system and is missing. The task performs no movement by the mechanical unit, but can read motion data. The RAPID functions may fail, if they read motion data and is connected to the wrong mechanical unit. The mechanical unit group in arg has been connected to the task. 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 A default mechanical unit group is used, 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 attribute was not specified when the configuration was created.
  • - -The configuration file could have been created in a non-multi move system.
  • - 1) Make sure the correct mechanical unit group is connected to the task.

Frequently asked · Questions fréquentes

What does ABB error 20371 mean?
ABB 20371 (“A default mechanical unit group is used”): A default mechanical unit group is used — ABB robot hardware event on the A default mechanical unit group is used (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 20371?
Inspect the A default mechanical unit group is used, 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

10005Program stopped10007Programme lancé10008Programme relancé

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 →