How to integrate multiple PLCs from different vendors using OPC-UA

OPC Unified Architecture, aka OPC-UA is a machine to machine communication protocol for low-level communication. It provides an architecture for modelling the data and services at a high-level which allow us to connect low-level IOT devices like sensors and microcontrollers to high-level computer and IT systems.

In this article, I will show how can you integrate multiple PLCs from different vendors to your factory network.