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INDUSTRIAL COMMUNICATION

OPC UA – Structured data up to the cloud

The Ethernet-based communication standard OPC UA (Open Platform Communications Unified Architecture) offers optimal conditions for digitalization. Ideal for communication between machines and vertical connectivity to the cloud.

Why OPC UA

Convergent, end-to-end, secured networks are needed to meet the requirements of tomorrow’s industry. Networks that are flexibly scalable, dynamically adaptable, and able to accommodate large numbers of users with extremely fast response times. OPC UA is key component for to achieving these goals.

The open, platform-neutral, and flexibly scalable communication standard OPC UA features a unique information model. With its semantic capabilities, OPC UA supports more than just data transmission. Proven mechanisms like authentication, authorization, and encryption guarantee security. In addition, safety-related mechanisms are being prepared to permit uniform, safety communication with OPC UA. Moreover, OPC UA can run on the existing PROFINET infrastructure without compromising performance. For real-time communication at the field level, Siemens combines OPC UA with PROFINET in a common Industrial Ethernet network. And relies on OPC UA as the interface from the control level to higher-level SCADA, MES, and ERP systems all the way to the cloud.

Infographic: Industrial ethernet - one network for everything

Key benefits

Vendor independent integration

OPC UA enables seamless communication across devices from different vendors and platforms, ensuring flexible and future‑proof industrial connectivity.

Built in security features

With authentication, message signing, and encryption, OPC UA offers strong protection for data exchange, supporting secure and reliable industrial communication.

Scalable end to end communication

OPC UA connects devices across all automation levels, from field to cloud, with semantic data descriptions ensuring consistent interpretation and efficient system integration.

Featured capabilities

OPC UA with TIA Portal

With TIA Portal, OPC UA enables secure data transmission and integrated machine monitoring. The Global Discovery Server updates security certificates during live operation. Alarms & Conditions transmit alerts and status messages via subscriptions to SCADA, ERP, MES, and HMI systems without needing a direct interface to TIA or SIMATIC.

Line integration with OPC UA

Enabling a cost-effective line integration with high scalability, fault-free commissioning, and a fast factory acceptance test. Thanks to the internationally defined OPC UA companion specifications, you benefit from the line integration of standardized data interfaces and status models – allowing you, for example, to easily adapt machine interfaces and reuse modules for different plants.

Discover how others use OPC UA

Rosendahl Nextrom | Making machine integration easier with OPC UA

The Austrian machine manufacturer Rosendahl Nextrom uses OPC UA to integrate its machines into the existing systems of its customers. Being platform- and manufacturer-neutral, the communication standard makes it possible to create interfaces easily and quickly. This way, Rosendahl Nextrom is able to shorten the commissioning time of its machines by up to 30%.

Frequently asked questions

Explore products

Discover our free software tools, e.g. for your network planning and simulation, for defining OPC UA information models, or for mapping existing companion specifications.