Fanuc Focas Python Apr 2026

Place the DLL in a location Python can find (e.g., C:\Windows\System32 or your project folder). Every FANUC CNC with Ethernet needs an IP address and port (usually 8193 by default for FOCAS). You also need to enable the FOCAS server function on the CNC side (often a parameter change: e.g., set parameter 148 bit 0 = 1).

ip = st.text_input("CNC IP Address", "192.168.1.100") if st.button("Connect"): h = focas2.cnc_allclibhndl3(ip, 8193, 3) if h <= 0: st.error("Connection failed") else: placeholder = st.empty() while True: pos = focas2.cnc_rdposition(h, 0) spindle = focas2.cnc_rdspindle(h, 0) placeholder.metric("Spindle Load (%)", spindle['data'][0]['load']) time.sleep(0.5)

try: while True: # Get absolute position (X, Y, Z, etc.) pos_data = focas2.cnc_rdposition(h, 0) # 0 = absolute print(f"X: pos_data['data'][0]:.3f Y: pos_data['data'][1]:.3f Z: pos_data['data'][2]:.3f") fanuc focas python

X: 245.123 Y: -10.567 Z: 80.000 Spindle load: 42% X: 245.125 Y: -10.570 Z: 80.000 Spindle load: 43% ... FOCAS also allows control , not just monitoring. This should only be used with proper safety interlocks, but it’s incredibly powerful for lights‑out manufacturing or automated workcells.

# Start a stored program (O1234) focas2.cnc_start(h, "O1234") focas2.cnc_feedhold(h) Cycle start (resume) focas2.cnc_cycle_start(h) Reset (ejects from alarm/emergency stop simulation) focas2.cnc_reset(h) Place the DLL in a location Python can find (e

(FANUC Open CNC Application Server) is a library that exposes the internal data points of a FANUC CNC—spindle load, axis positions, alarms, program execution status—via a network or serial connection. And when you combine FOCAS with Python , you unlock real-time monitoring, predictive maintenance, automated data logging, and even remote control of industrial machinery using one of the world's most accessible programming languages.

import focas2 handle = focas2.cnc_allclibhndl3("192.168.1.100", 8193, 3) # timeout=3 sec if handle <= 0: print("Connection failed") else: print("Connected successfully") ip = st

time.sleep(1) finally: focas2.cnc_freelibhndl(h) monitor_cnc("192.168.1.100")

(example):

import streamlit as st import focas2 import time st.title("FANUC CNC Monitor")