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Edge HMI

OPC UA Client

  • Last UpdatedOct 29, 2026
  • 1 minute read

Use the OPC UA Client worksheet and runtime task to establish communication between your project and a data exchange server that supports the OPC UA interoperability standard.

This OPC UA Client feature uses the new OPC Unified Architecture standard introduced by the OPC Foundation. According to the foundation:

The OPC Unified Architecture (UA), released in 2008, is a platform independent service-oriented architecture that integrates all the functionality of the individual OPC Classic specifications into one extensible framework.

This multi-layered approach accomplishes the original design specification goals of:

  • Functional equivalence: all COM OPC Classic specifications are mapped to UA

  • Platform independence: from an embedded micro-controller to cloud-based infrastructure

  • Secure: encryption, authentication, and auditing

  • Extensible: ability to add new features without affecting existing applications

  • Comprehensive information modeling: for defining complex information

In other words, OPC UA is intended to be a platform- and language-independent standard. For more information, go to: opcfoundation.org/about/opc-technologies/opc-ua/

Note: This feature includes cryptographic software written by Eric Young (eay@cryptsoft.com).