Fanuc Focas Python [verified] < 720p >

import focas

Connect the CNC to your network via Ethernet.

FANUC FOCAS is a set of library files (DLLs) that allow external applications to communicate with FANUC CNC controllers. It serves as a bridge, enabling you to "ask" the CNC for specific information—ranging from axis positions and spindle loads to active alarm messages—and receive detailed data in return. There are two primary versions: fanuc focas python

cnc.close()

cnc = Fanuc('192.168.1.100', 8193)

import ctypes import os # Load the FANUC FOCAS DLL (Ensure the path matches your library location) # For 64-bit systems, use fwlib64.dll dll_path = os.path.abspath("fwlib64.dll") focas = ctypes.WinDLL(dll_path) # Define the structure for FOCAS System Information class ODBSYS(ctypes.Structure): _fields_ = [ ("addinfo", ctypes.c_short), ("max_axis", ctypes.c_short), ("cnc_type", ctypes.c_char * 2), ("mt_type", ctypes.c_char * 4), ("series", ctypes.c_char * 4), ("version", ctypes.c_char * 4), ("axes", ctypes.c_char * 2) ] def get_cnc_info(ip_address, port=8193, timeout=10): # Initialize connection handle libh = ctypes.c_ushort(0) # Connect to the CNC via Ethernet # cnc_connect arguments: IP string, Port, Timeout, Pointer to Handle result = focas.cnc_connect( ip_address.encode('utf-8'), port, timeout, ctypes.byref(libh) ) if result != 0: print(f"Failed to connect to CNC. Error code: result") return print(f"Connected successfully! Handle ID: libh.value") try: # Instantiate the system info structure sysinfo = ODBSYS() # Read system information sys_result = focas.cnc_rdsysinfo(libh, ctypes.byref(sysinfo)) if sys_result == 0: print("--- CNC System Information ---") print(f"CNC Type: sysinfo.cnc_type.decode('utf-8')") print(f"Series: sysinfo.series.decode('utf-8')") print(f"Version: sysinfo.version.decode('utf-8')") print(f"Max Axes: sysinfo.max_axis") else: print(f"Failed to read system info. Error code: sys_result") finally: # Always close the connection to free up controller resources focas.cnc_freelib_handle(libh) print("Connection closed.") # Execute the connection if __name__ == "__main__": # Replace with your actual CNC IP address TARGET_IP = "192.168.1.100" get_cnc_info(TARGET_IP) Use code with caution. Practical Industrial Use Cases

class FanucConnection: def __init__(self, ip, port=8193): self.ip = ip self.port = port self.handle = None def __enter__(self): self.handle = connect_fanuc(self.ip, self.port) return self import focas Connect the CNC to your network via Ethernet

Start small—just read the current program number and spindle load. Once stable, expand to full data lakes and dashboards. The era of the "Black Box CNC" is over; Python is the key.

You need the Fwlib32.dll (for 32-bit Python) or Fwlib64.dll (for 64-bit) file, usually found on the Fanuc HMI or provided by the machine builder. There are two primary versions: cnc

: Community efforts such as pyfanuc attempt to reverse-engineer the wire protocol, which can be useful for non-Windows platforms (like Linux/Raspberry Pi) where official DLLs may not run natively.

A popular open-source library for connecting to controllers to read macro variables, axis data (speed/load), and positions.