FANUC Alarm PRIO-002 — WARN Illegal port number
FANUC PRIO-002 (“WARN Illegal port number”): The port number is invalid or not presently assigned. First check: Correct the port number.
Updated 2026-09-17 · LogrobotLM reference
Description
The port number is invalid or not presently assigned. Port numbers must be in the range of 1-32767. However, operator panel (SOP) port numbers can be zero. In most cases (e.g., DOUT[n] = Off and calls to the SET_PORT_SIM builtin), the specified port already must be assigned.
Remedy
Correct the port number.
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 →