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FANUC Alarm SVGN-004 — STOP Unable to Allocate Memory

FANUC SVGN-004 (“STOP Unable to Allocate Memory”): A failure occured while allocating memory. First check: Check amount of memory being used by the system.

Updated 2026-09-17 · LogrobotLM reference

Description

A failure occured while allocating memory.

Remedy

Check amount of memory being used by the system. Perform a cold start on the controller. Record error and report to hotline.

Related codes

SVGN-002STOP No sysvar pointerSVGN-003STOP No global variablesSVGN-005STOP Wrong TPP inst. formatSVGN-006STOP Another TASK used this equip.

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 →