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 MOTN-451 — CS: Internal error No1

FANUC MOTN-451 (“CS: Internal error No1”): An internal error occurred in the Clock Simultaneous function. First check: Write down the steps that led to this error, and contact FANUC or FANUC Robotics for support.

Updated 2026-08-29 · LogrobotLM reference

Description

An internal error occurred in the Clock Simultaneous function.

Remedy · Remède

Write down the steps that led to this error, and contact FANUC or FANUC Robotics for support.

Frequently asked · Questions fréquentes

What does FANUC alarm MOTN-451 mean?
FANUC MOTN-451 (“CS: Internal error No1”): An internal error occurred in the Clock Simultaneous function.
How do you troubleshoot FANUC alarm MOTN-451?
Write down the steps that led to this error, and contact FANUC or FANUC Robotics for support.

Related codes / Codes liés

MOTN-443Zero accel time used (G:%d)MOTN-444No J2/J3 interaction (G:%d)MOTN-461CS: Both of EXT. & VR. clock validMOTN-462CS: No data signal for EXT.clock

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 →