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-087 — STOP Utool change not allowed(G:%d^2)

FANUC MOTN-087 (“STOP Utool change not allowed(G:%d^2)”): $utool is changed before move First check: Do not change $utool for this move

Updated 2026-08-29 · LogrobotLM reference

Description

$utool is changed before move

Remedy · Remède

Do not change $utool for this move

Frequently asked · Questions fréquentes

What does FANUC alarm MOTN-087 mean?
FANUC MOTN-087 (“STOP Utool change not allowed(G:%d^2)”): $utool is changed before move
How do you troubleshoot FANUC alarm MOTN-087?
Do not change $utool for this move

Related codes / Codes liés

MOTN-085STOP Error in gp_concurrent(G:%d^2)MOTN-086STOP Not all CON_SEGs recvd(G:%d^2)MOTN-088STOP Not cartesian move (G:%d^2)MOTN-089STOP Segment not planned (G:%d^2)

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 →