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 2026-09-17 · LogrobotLM reference

Description

This operation requires that UI signals are enabled.

Remedy

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

Related codes

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. How this reference is built →