FANUC Alarm HOST-281 — SMB: Time-out waiting for PC
FANUC HOST-281 (“SMB: Time-out waiting for PC”): The robot timed-out while waiting for the PC to respond to a PC Share request. First check: Verify the PC is properly connected to the network, and can be pinged on the network.
Updated 2026-08-29 · LogrobotLM reference
Description
The robot timed-out while waiting for the PC to respond to a PC Share request.
Remedy · Remède
Verify the PC is properly connected to the network, and can be pinged on the network. Verify the PC Share client tag is properly configured, and the PC has properly shared the location/directory being accessed. The default timeout value can be changed in System Variables. If the PC is too slow for the default timeout, set a more reasonable timeout value in seconds in $SMB_CLNT[X].$RSPTMOUT, and power-cycle the controller. If the problem persists, document the events that led to the error, and call your FANUC or FANUC Robotics technical representative.
Frequently asked · Questions fréquentes
- What does FANUC alarm HOST-281 mean?
- FANUC HOST-281 (“SMB: Time-out waiting for PC”): The robot timed-out while waiting for the PC to respond to a PC Share request.
- How do you troubleshoot FANUC alarm HOST-281?
- Verify the PC is properly connected to the network, and can be pinged on the network. Verify the PC Share client tag is properly configured, and the PC has properly shared the location/directory being accessed. The default timeout value can be changed in System Variables. If the PC is too slow for the default…
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 →