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FANUC Alarm LNTK-031 — STOP UFRAME must be zero

FANUC LNTK-031 (“STOP UFRAME must be zero”): User frames cannot be used when tracking. First check: Set $MNUFRAMENUM[] to zero.

Updated 2026-09-17 · LogrobotLM reference

Description

User frames cannot be used when tracking.

Remedy

Set $MNUFRAMENUM[] to zero.

Related codes

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 →