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opc ua

OPC UA stands for Open Platform Communications United Architecture, an industrial information data transfer model. This open interface standard is unaffected by the software’s developer or platform provider and the computer language in which the application was written. It is also affected by the operating system on which the application is running. Open Platform communications United Architecture was released in 2008 as a companion requirement. It is a platform that is an independent service-oriented architecture that joins all the practicality of the individual OPC Classic specifications into one extensible framework. The OPC standard is a collection of requirements created by software engineers, industry suppliers, and end-users. These requirements describe the application between Clients and Servers, as well as Servers and Servers. The main features of OPC UA include access to real-time data, alarm and event tracking, statistical data usage, and other applications. The aim of OPC UA was for the framework to have a way forward from the original OPC communications model, namely Microsoft Windows-only process exchange COM/DCOM. This would better address the changing demands of factory applications.


OPC UA architecture is built on various logical scales and is a service-oriented architecture (SOA).OPC Base Functions are framework abstract method specifications that form the foundation for OPC UA compatibility. The transport layer encapsulates these techniques in a standard, which serializes and desterilizes data before sending it across the network. The use of two protocols accomplishes this. The first is an increased performance binary TCP protocol, and the second is a Web provider procedure. The OPC data system is based on clusters and is known as a Full Mesh Network. These nodes, similar to objects in object-oriented programming, can contain any Meta information (OOP). A node may have read access aspects (DA, HDA), callable procedures, and induced incidents that can be transferred (AE, Data Access, Data Change). Process info, as well as all other forms of metadata, are stored in nodes. The style model is stored in the OPC namespace. Client applications will check if a server supports specific profiles. If a server only embraces DA compatibility or even AE, HDA, and other features, this is needed to acquire details. It is also possible to find out if a server supports a specific profile. The following are some of the new and essential features of OPC UA.

Advantages OPC UA

  • OPC UA Enables smart manufacturing; with the increased adoption of technology in every sector, especially the manufacturing industry, OPC UA is one of the main platforms that can be exploited to enable smart manufacturing. This increases the quality and quantity of well-produced parts while lowering the cost of production.
  • It helps to reduce the difficulty of interaction between machines and machinery, which increases plant performance overall. With the OPC UA platform, the machines and human input in the company are able to coexist as the platform makes it easier for operations of the plants.
  • It is easily adaptable to existing systems, modern equipment, and market segments. Technological advances must adapt to the current environment. This is mainly through being able to address existing problems in society.

It is capable of receiving and interpreting numerous sets of data from various sources. The platform has been configured with the ability to read and interpret a wide variety of data. This has facilitated its adoption globally.