Fanuc Focas Python Site

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)

In the world of industrial manufacturing, FANUC CNC (Computer Numerical Control) machines are the gold standard—powering everything from automotive assembly lines to aerospace component machining. For decades, extracting data from these controllers or sending commands to them meant relying on proprietary, vendor-specific software (often written in C++ or ladder logic). That barrier has now fallen.

The handle is an integer ID used for all subsequent calls. Once connected, you can poll any data point. Let’s read the current position (absolute, machine coordinate) and spindle load : fanuc focas python

# 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)

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

(example):

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") The handle is an integer ID used for all subsequent calls

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.

import focas2 import time def monitor_cnc(ip): h = focas2.cnc_allclibhndl3(ip, 8193, 3) if h <= 0: return

Each function returns an error code (0 = success). Always check return values. Combine the live reading loop with a web framework. Example with Streamlit :