LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free →

FANUC Alarm PRIO-180 — WARN CNET Sys Err … … 0x…

Manufacturer wording — WARN CNET Sys Err %d %d 0x%x
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC PRIO-180 (“WARN CNET Sys Err … … 0x…”): An element could not be added to the system I/O scan When this error is posted, ControlNet I/O is not Operational. First check: Verify all I/O is valid.

Updated 2026-09-17 · LogrobotLM reference

Description

An element could not be added to the system I/O scan When this error is posted, ControlNet I/O is not Operational. Possible s are: * Invalid Configuration of scanner scan list * Too many I/O points for any given CNET device * Too many I/O points in the whole system

Remedy

Verify all I/O is valid. Check all CNET devices and ensure the sizes are resonable. Max I/O is limited by that allowed for the system.

Related codes

PRIO-178WARN Blk scns lost; … … …PRIO-179WARN Run scns lost; … … …PRIO-181WARN CNET Conn. Req. TimeoutPRIO-182WARN CNET CCO Change Aborted

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 →