Tool offsets, tool life management statistics, and current tool numbers.
logging.basicConfig(level=logging.INFO)
# Get the current position position = cnc.get_position()
Here is a basic example of reading axis data using the library. fanuc focas python
John ran the script, and to his delight, it worked seamlessly. The CNC machine received the data, executed the program, and sent back the machining results. John was able to monitor the process remotely and verify that the results were accurate.
Constantly opening and closing FOCAS handles creates network overhead and latency. Open the connection handle once when the script initializes, loop your data extraction queries, and close the handle when terminating the script.
FOCAS is the official API library provided by FANUC for accessing data from their CNC controllers. It stands for and allows you to develop custom applications that can read machine status, execute commands, and monitor production in real time. Traditionally, using this API required programming in C, C++, or C#, which created a steep learning curve. Tool offsets, tool life management statistics, and current
# Define the C-Structure required by FOCAS for status info class ODBSTAT(ctypes.Structure): _fields_ = [ ("hd_flag", ctypes.c_short), ("main_prg", ctypes.c_short), ("run", ctypes.c_short), ("status", ctypes.c_short), ("editing", ctypes.c_short), ("p_stat", ctypes.c_short), ("emergency", ctypes.c_short), ("alarm", ctypes.c_short), ("motion", ctypes.c_short), ("mstb", ctypes.c_short), ("label", ctypes.c_short), ("blk_end", ctypes.c_short), ("axes", ctypes.c_short), ("srch", ctypes.c_short), ("p_rid", ctypes.c_short), ("p_wrt", ctypes.c_short), ] def read_status(handle): stat = ODBSTAT() result = focas.cnc_statinfo(handle, ctypes.byref(stat)) if result == 0: # Mapping constants (e.g., status 3 = Run, run 1 = Automatic) print(f"Autonomus Run Status: stat.run") print(f"Emergency Stop Active: True if stat.emergency == 1 else False") print(f"Alarm Triggered: True if stat.alarm != 0 else False") else: print(f"Failed to read status. Error: result") Use code with caution. 2. Reading Axis Positions ( cnc_rdposition )
FANUC FOCAS and Python is a powerful combination that enables developers to unlock the full potential of FANUC CNC systems. By leveraging the FOCAS API and Python, developers can create custom applications, analyze and visualize data, and integrate the CNC system with other systems. With its ease of use, flexibility, and extensive libraries, Python is an ideal language for FANUC FOCAS development. Whether you are a seasoned developer or just starting out, this article provides a comprehensive guide to getting started with FANUC FOCAS and Python.
Fanuc FOCAS functions are bundled into runtime libraries provided by Fanuc. The CNC machine received the data, executed the
A 32-bit or 64-bit Python installation matching the architecture of your FOCAS DLL files. Step-by-Step Implementation with Python
except Exception as e: print(f"Connection failed: e")
# Get active alarms class ODBALM(ctypes.Structure): _fields_ = [ ("alm_no", ctypes.c_short * 8), ("alm_msg", ctypes.c_char * 8 * 32) ]
import ctypes import os