5# Python OPC UA Server & Node-RED Client | Read & Write Tutorial

Published: 01 January 2026
on channel: IndusCore Tech
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In this video, we demonstrate a practical OPC UA implementation using Python, with real Read & Write interaction using Node-RED as the OPC UA client.

You will learn how to:
Enable Read and Write access on OPC UA variables
Connect Node-RED as an OPC UA client
Read values from the server and write values back in real time
Simulate an industrial process (Tank filling with a Valve and FlowRate)

This video is perfect for automation engineers, industrial developers, students, and anyone who wants a hands-on understanding of OPC UA in a real industrial context.

The demonstration is done using:
Python OPC UA Server
Node-RED OPC UA Client

OPC UA Python library used in this video:
https://github.com/FreeOpcUa/python-o...
https://python-opcua.readthedocs.io/e...

This content is part of the Industrial Basics Series, breaking down complex industrial technologies into clear, practical, and real-world examples.

If you’re interested in industrial networking, OPC UA, SCADA, PLCs, and IIoT, don’t forget to like, subscribe, and share!

#opcua #automation #industry40

Chapters:
00:00 Introduction
01:19 Retrieve NodeIDs from UA Expert Client
02:50 Implement Node-RED Client and Test Communication


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