How To Create an OPC UA Server Using Node Red
Imagine you are visiting a website for the first time, and you don’t really know what you are going to find. But when you land on the site you realise that the designer arranged the pages in such a way that it allows you to browse and consume its contents in a meaningful manner without prior knowledge of its structure. That’s the kind of I4.0 interoperability that OPC UA promises with its information modelling. A total transformation of machine interactions, whereby machines are able to browse through each other’s address space in a standardised manner. This allows machines and perhaps AI algorithms to traverse an entire information structure of a sensor, machine or whole plant by following a hierarchical structure that the OPC UA server exposes. And along the way, discover what that entity can do based on the services that it exposes. But how does one begin to build an OPC UA server to embed into a machine or expose plant information? The best option to build a robust OPC UA server is to use an SDK for languages such as C, C#, Java, Python However, for rapid prototyping there are more intuitive platforms that can get you started quickly. One such platform is Node-Red. In the video below I’m going to show you how to build an OPC UA server using Node-Red.
THE HALF LIFE OF A LEARNED SKILL USED TO BE 30 YEARS. TODAY IT'S 5.
And it will continue to decrease exponentially. The only way to avoid becoming irrelevant is to get in the habit of reinventing yourself every single day.