See UG-004_OXY-LC-User-Guide for full implementation details for modbus with OXY-LC
This repository provides Python code for interacting with an OXY-LC-485 oxygen sensor using the Modbus RTU protocol.
- Python 3.11 or newer (https://www.python.org/downloads/)
- Older Python revisions are untested but may work.
- A Python library for Modbus communication:
- Recommended: minimalmodbus (lightweight, easy-to-use) - https://minimalmodbus.readthedocs.io/en/stable/
- A USB-to-RS485 converter compatible with your system and the OXY-LC-485.
- Recommended: RS-485 FTDI cable, USB-RS485-WE-1800-BT
- Suitable power supply for OXY-LC-485
- SST Zirconia Oxygen sensor connected to OXY-LC-485
git clone https://github.com/ProcessSensingTechnologies/OXY-LC-485_Modbus_Python.gitIt is highly recommended to use a virtual environment to isolate your project's dependencies and avoid conflicts with other Python projects.
cd OXY-LC-485_Modbus_Python
python -m pip install -r requirements.txtImport OXY-LC-485 into the main script and initialise the device providing the portname and slave address. Use the provided methods to get/set data to and from the device.
Detailed documentation can be found here
For a detailed example of how to use this library, please refer to the provided script example_1.py. This script demonstrates how to connect to the OXY-LC-485, read sensor data, and perform other common tasks.
To run the example from the root folder it can be run as a module: python -m examples.example_1
Refer to the OXY-LC-485 Modbus register map in UG-004_OXY-LC-User-Guide for details on available registers for reading/writing data.
This is a basic example. You can modify the script to handle specific sensor data parsing, error handling, and other functionalities as needed.
Please feel free to open issues for support or to suggest changes.
This repository is licensed under the BSD 3-Clause License. See the LICENSE file for details.