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FANUC Alarm OS-004 — PAUSE. G Unable to Allocate Memory

FANUC OS-004 (“PAUSE. G Unable to Allocate Memory”): Failed to allocate memory for ISG system variables. First check: Check amount of memory being used by system.

Updated 2026-09-17 · LogrobotLM reference

Description

Failed to allocate memory for ISG system variables.

Remedy

Check amount of memory being used by system. OS --005 WARN System error.

Related codes

OS-002WARN System error - invalid function performedOS-003PAUSE. G No global variablesOS-005PAUSE. G No AMR pointerOS-006PAUSE. G Failed to create AMR

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