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 PRIO-121 — WARN Stop PMC program

FANUC PRIO-121 (“WARN Stop PMC program”): You can not do this operation when PMC peogram is running. First check: Please stop PMC program execution.

Updated 2026-08-29 · LogrobotLM reference

Description

You can not do this operation when PMC peogram is running.

Remedy · Remède

Please stop PMC program execution.

Frequently asked · Questions fréquentes

What does FANUC alarm PRIO-121 mean?
FANUC PRIO-121 (“WARN Stop PMC program”): You can not do this operation when PMC peogram is running.
How do you troubleshoot FANUC alarm PRIO-121?
Please stop PMC program execution.

Related codes / Codes liés

PRIO-106STOP Device with port is off-linePRIO-119WARN Too many DIGITAL I/O portsPRIO-125SYST SLC2 initialization errorPRIO-126WARN No PMC program

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 →