FANUC Alarm FXTL-004 — Output buffer too small
FANUC FXTL-004 (“Output buffer too small”): The output buffer is too small. First check: Document the events that led to the error, and contact your FANUC technical representative.
Updated 2026-09-17 · LogrobotLM reference
Description
The output buffer is too small. A file output line exceeds the size of the buffer.
Remedy
Document the events that led to the error, and contact your FANUC technical representative.
Related codes
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 →