LogrobotLM

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FANUC Alarm SYST-259 — UI signals are disabled

FANUC SYST-259 (“UI signals are disabled”): This operation requires that UI signals are enabled. First check: Check the setting of 'Enable UI signals' in the system config menu.

Updated 2026-08-29 · LogrobotLM reference

Description

This operation requires that UI signals are enabled.

Remedy · Remède

Check the setting of 'Enable UI signals' in the system config menu.

Frequently asked · Questions fréquentes

What does FANUC alarm SYST-259 mean?
FANUC SYST-259 (“UI signals are disabled”): This operation requires that UI signals are enabled.
How do you troubleshoot FANUC alarm SYST-259?
Check the setting of 'Enable UI signals' in the system config menu.

Related codes / Codes liés

SYST-257No Ext. Hold Relase inputSYST-258Operator panel holdSYST-266Please cycle powerSYST-267System is being initialized

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 →