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.

FANUC Alarm OS-147 — Assert MAIN %d %d %s

FANUC OS-147 (“Assert MAIN %d %d %s”): An assert occurred on the MAIN processor. First check: Record and report the parameters following the 'Assert MAIN' text to the FANUC or FANUC Robotics Help Hotline.

Updated 2026-08-29 · LogrobotLM reference

Description

An assert occurred on the MAIN processor.

Remedy · Remède

Record and report the parameters following the 'Assert MAIN' text to the FANUC or FANUC Robotics Help Hotline.

Frequently asked · Questions fréquentes

What does FANUC alarm OS-147 mean?
FANUC OS-147 (“Assert MAIN %d %d %s”): An assert occurred on the MAIN processor.
How do you troubleshoot FANUC alarm OS-147?
Record and report the parameters following the 'Assert MAIN' text to the FANUC or FANUC Robotics Help Hotline.

Related codes / Codes liés

OS-144SYST System error %x, %x at %xOS-145WARN Power off controller to resetOS-148Assert COMM %d %d %sOS-149Assert VMAIN %d %d %s

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 →