FANUC Alarm MOTN-087 — STOP Utool change not allowed

Manufacturer wording — STOP Utool change not allowed(G:%d^2)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

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

Updated 2026-09-17 · LogrobotLM reference

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. How this reference is built →