FANUC Alarm TPIF-140 — Connection limit exceeded
FANUC TPIF-140 (“Connection limit exceeded”): An attempt to log into the teach pendant menuing system from an external web browser has failed because the connection limit has been reached. First check: The system variable $UI_CONFIG.$NUM_CONNECT controls the number of external connections allowed.
Updated 2026-09-17 · LogrobotLM reference
Description
An attempt to log into the teach pendant menuing system from an external web browser has failed because the connection limit has been reached.
Remedy
The system variable $UI_CONFIG.$NUM_CONNECT controls the number of external connections allowed. The maximum number of connections is five INCLUDING the teach pendant. Reconnect the external connections in your system so that no more than five exist.
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 →