FANUC Alarm FXTL-071 — Invalid I/O configuration
FANUC FXTL-071 (“Invalid I/O configuration”): There is an invalid value assigned for the rack and/or slot number for the fieldbus I/O device for the tray. First check: Assign the correct rack and slot for the fieldbus interface that is actually installed and configured on the controller.
Updated 2026-09-17 · LogrobotLM reference
Description
There is an invalid value assigned for the rack and/or slot number for the fieldbus I/O device for the tray.
Remedy
Assign the correct rack and slot for the fieldbus interface that is actually installed and configured on the controller.
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 →