About Unified Architecture

As the next generation of OPC technology, OPC UA (Unified Architecture) is a major leap forward for secure, reliable and platform independent interoperability. OPC UA is designed for the transport of data and information from first-tier factory and process control devices through to the enterprise information system.

The OPC UA specification, released in 2008, integrates all the functionality from the existing OPC Classic specifications into a single service-oriented architecture. It adds essential new features, such as platform independence, scalability, high availability, embedded diagnostics, discovery and rendering of complex information models, security, reliability, redundancy and more.

OPC UA provides a single set of services to expose the OPC data models, such as Data Access, Alarms & Conditions, Historical Access, and can be implemented on non-Microsoft systems, including embedded devices.

OPC UA specifications are available to OPC Foundation member: