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-400 — STOP No Coll. Guard Reg. Defined

FANUC MOTN-400 (“STOP No Coll. Guard Reg. Defined”): No register has been defined for use with the Collision Guard Update macro. First check: Use the Collision Guard SETUP screen to define a register for use with the macro.

Updated 2026-08-29 · LogrobotLM reference

Description

No register has been defined for use with the Collision Guard Update macro.

Remedy · Remède

Use the Collision Guard SETUP screen to define a register for use with the macro.

Frequently asked · Questions fréquentes

What does FANUC alarm MOTN-400 mean?
FANUC MOTN-400 (“STOP No Coll. Guard Reg. Defined”): No register has been defined for use with the Collision Guard Update macro.
How do you troubleshoot FANUC alarm MOTN-400?
Use the Collision Guard SETUP screen to define a register for use with the macro.

Related codes / Codes liés

MOTN-391Motion option cfg file missingMOTN-392Too many softpartsMOTN-401STOP Coll. Guard Reg. Data ErrorMOTN-402HSCD: Update Servo Timeout

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 →