FANUC Alarm FXTL-039 — Unit not mapped: T… U…

Manufacturer wording — Unit not mapped: T%d U%d
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC FXTL-039 (“Unit not mapped: T… U…”): The specified unit has not been mapped to a CPU and motion group. First check: Assign or correct the unit mappings and restart.

Updated 2026-09-17 · LogrobotLM reference

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 →