LogrobotLM

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FANUC Alarm HOST-285 — SMB: DOS error: File not found

FANUC HOST-285 (“SMB: DOS error: File not found”): The PC server was unable to find the requested file. First check: Verify the Remote Path/Share field is properly configured in the client tag setup screen.

Updated 2026-09-17 · LogrobotLM reference

Description

The PC server was unable to find the requested file.

Remedy

Verify the Remote Path/Share field is properly configured in the client tag setup screen. Verify the requested file exists on the remote PC server by performing a directory listing from the robot controller FILE menu. If the problem persists, document the events that led to the error, and call your FANUC or FANUC Robotics technical representative.

Related codes

HOST-283SMB: Netbios configuration errorHOST-284SMB: Secure Signature from PC failedHOST-286SMB: DOS error: Path not foundHOST-287SMB: DOS error: Too many open files

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 →