In the world of CNC manufacturing, Fanuc is the undisputed king. From Robodrills to Robocuts, their controllers are the brains behind millions of machines. However, extracting data from these controllers has historically been a challenge reserved for C++ developers or expensive proprietary MES systems.
Enter and Fanuc FOCAS .
if ret == 0: positions = {} axis_names = ['X', 'Y', 'Z', 'A', 'B', 'C'] for i in range(axis_count): positions[axis_names[i]] = odbpos.data[i] return positions return None fwlib.cnc_rdposition.argtypes = [ctypes.c_short, ctypes.c_short, ctypes.POINTER(ODBPOS)] Reading Spindle Load (Dynamic Data) Spindle load is diagnostic data # 310 (usually). You use cnc_rddiagnum . fanuc focas python
handle = connect_fanuc(CNC_IP) if handle: while True: status = get_status(handle) print(f"Machine Status: {status}") time.sleep(1) Now that we have a connection, let's pull back the valuable data: Axis positions and Spindle load . Reading Absolute Coordinates We need the ODBAXIS structure. Here is an extended script: In the world of CNC manufacturing, Fanuc is
Combining the lightweight, high-speed library of FOCAS with the data science power of Python allows manufacturers to perform real-time monitoring, predictive maintenance, and OEE tracking at a fraction of the traditional cost. Enter and Fanuc FOCAS
class ODST(ctypes.Structure): fields = [("status", ctypes.c_short)] We need to tell Python the argument types for the DLL calls fwlib.cnc_allclibhndl3.argtypes = [wintypes.LPCSTR, ctypes.POINTER(ctypes.c_short)] fwlib.cnc_statinfo.argtypes = [ctypes.c_short, ctypes.POINTER(ODST)] --- The Connection Logic --- def connect_fanuc(ip_address, port=8193): """ Establish a handle to the CNC. Default FOCAS port is 8193. """ h = ctypes.c_short() cnc_ip = ip_address.encode('ascii') + f":{port}".encode('ascii')