FANUC Alarm PNT2-099 — PC serial interface fault
FANUC PNT2-099 (“PC serial interface fault”): The PC interface serial link has failed. First check: Check the LED status on the PC interface board.
Updated 2026-09-17 · LogrobotLM reference
Description
The PC interface serial link has failed.
Remedy
Check the LED status on the PC interface board. Refer to the Maintenance for the possible cause.
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 →