# Setup argument types for the connection function focas.cnc_allclibhndl3.argtypes = [ ctypes.c_char_p, # IP address ctypes.c_ushort, # Port ctypes.c_long, # Timeout ctypes.POINTER(ctypes.c_ushort) # Handle pointer ] focas.cnc_allclibhndl3.restype = ctypes.c_short # Returns EW_OK(0) on success
# Define the ODBSTS structure (used for reading status) class ODBSTS(ctypes.Structure): _fields_ = [ ("dummy", ctypes.c_short * 2), ("tmmode", ctypes.c_short), ("aut", ctypes.c_short), ("run", ctypes.c_short), ("motion", ctypes.c_short), ("mstb", ctypes.c_short), ("emergency", ctypes.c_short), ]
if ret == 0: # Mode codes: 0=MEM, 1=MDI, 2=JOG, 3=HANDLE, etc. mode_names = 0: "MEM", 1: "MDI", 2: "JOG", 3: "HANDLE", 4: "EDIT" return mode_names.get(mode_data.mode, f"UNKNOWN(mode_data.mode)") return "ERROR"
Easily send data to MQTT brokers, SQL databases, or cloud platforms (AWS, Azure) using standard libraries. fanuc focas python
Ensure your PC can ping the CNC machine's IP address over port 8193 (the default FOCAS port).
try: # Connect to the CNC cnc.connect() print(f"Successfully connected to IP_ADDRESS")
Traditionally, FOCAS has been programmed in C, C++, or C#. Here's why Python is rapidly becoming the preferred choice: # Setup argument types for the connection function focas
# Using ctypes approach to demonstrate how to check CNC mode # The mode indicates whether machine is in Auto, MDI, JOG, etc.
If you encounter dependency conflicts with fwlipy , try:
Don't poll too aggressively. Most real-time monitoring applications run at 1-10 Hz (1-10 samples per second), which provides excellent time resolution without overwhelming the CNC's Ethernet interface. try: # Connect to the CNC cnc
# Connect print(f"Connecting to IP_ADDRESS...") ret = focas.cnc_allclibhndl3(IP_ADDRESS.encode('utf-8'), PORT, TIMEOUT, ctypes.byref(libh))
Because the original FOCAS library is written in C, Python developers typically use or protocol-analysis libraries to interact with the controller. 1. Popular Python Libraries
