Fanuc Focas Python [hot] Jun 2026

Collect production counts, cycle times, and downtime events to calculate Overall Equipment Effectiveness in real time. Store data in InfluxDB and visualize with Grafana.

The following sections highlight some of the key functions and provide examples:

The easiest way to start is using an open-source wrapper like ⁠pyfanuc . Getting Started: Python Code Example

from pyfanuc import fanuc

Below is a foundational script demonstrating how to load the library, connect to a machine, read the current status, and disconnect cleanly.

time.sleep(0.5) # Poll every 500ms (FOCAS limit is usually 100ms)

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. fanuc focas python

# Write data to the CNC system cnc_system.write_data("O0001", "Hello, World!")

Every FOCAS session begins by allocating a handle using cnc_allclibhndl3 .

For direct control using ctypes (useful for older or non-standard setups): Collect production counts, cycle times, and downtime events

While you can use ctypes to map fwlib64.dll directly, several Python libraries simplify the process. Method 1: Using pyfanuc (Recommended)

Wrapper packages that pre-define FOCAS structures.

"There is a limitation of the functions which can be used for the development, by the difference of the CNC Series, Model, Type and series and version of control software. Some functions need the proper function at the control software of the CNC even if the CNC is the latest version. Functions which cannot be used for the CNC which is owned by the customer for the purpose of the application development may exist." Getting Started: Python Code Example from pyfanuc import

data_log.append(row)

# Connect to the CNC system cnc_system = focas_api.connect("192.168.1.100", 8193)