FANUC Alarm PNT1-099 — PC serial interface fault
FANUC PNT1-099 (“PC serial interface fault”): The PLC interface serial link has failed. First check: Check the LED status on PLC interface board.
Updated 2026-08-29 · LogrobotLM reference
Description
The PLC interface serial link has failed.
Remedy · Remède
Check the LED status on PLC interface board. Refer to Remote I/O interface for an Allen-Bradley PLC or Genius Network Interface for GE FANUC manual for more information.
Frequently asked · Questions fréquentes
- What does FANUC alarm PNT1-099 mean?
- FANUC PNT1-099 (“PC serial interface fault”): The PLC interface serial link has failed.
- How do you troubleshoot FANUC alarm PNT1-099?
- Check the LED status on PLC interface board. Refer to Remote I/O interface for an Allen-Bradley PLC or Genius Network Interface for GE FANUC manual for more information.
Related codes / Codes liés
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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →