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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 2026-08-29 · LogrobotLM reference

Description

User frames cannot be used when tracking.

Remedy · Remède

Set $MNUFRAMENUM[] to zero.

Frequently asked · Questions fréquentes

What does FANUC alarm LNTK-031 mean?
FANUC LNTK-031 (“STOP UFRAME must be zero”): User frames cannot be used when tracking.
How do you troubleshoot FANUC alarm LNTK-031?
Set $MNUFRAMENUM[] to zero.

Related codes / Codes liés

LNTK-029STOP LNTK stack overflowLNTK-030STOP Stack / header mismatchLNTK-032STOP Conveyor resync failedLNTK-033STOP Failed to send a packet

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 →