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  • SIOTH® Platform
    • Smart IoT Highway
      IT-OT-IIoT IntegrationAugmented AIVisualization & Monitoring
      SIOTH® Related Products
      SIOTH® SCADAMQTT Universal BrokerOPC UA Universal Server
      See it in action
      Download NowWatch Demo Video
  • OPC Products
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      OPC UA WrapperOPCNet Broker DA HDA AE OPC UA Universal ServerOPC Easy ArchiverOPC UA Proxy
      OPC Servers
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  • SIOTH® Platform
    • Smart IoT Highway
      IT-OT-IIoT Integration
      Seamlessly integrate your IT and OT in a secure way
      Augmented AI
      Leverage predictive analytics, ML/AI models combined with logic rules, workflows and fault propagation
      Visualization & Monitoring
      Configure web-based SCADA and dashboards
      SIOTH® Related Products
      SIOTH® SCADA
      Web SCADA enabling monitoring in minutes
      MQTT Universal Broker
      Unify Your OT Data with MQTT
      OPC UA Universal Server
      Unify Your OT Data with OPC UA
      See it in action
      Download Now
      Download your free SIOTH trial and start configuring your data flows
      Watch Demo Video
      Configure the OPC UA Universal Server, built in minutes using SIOTH
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OPC UA Proxy

Keep Your OPC Classic Clients. Get OPC UA Compatibility

OPC UA Proxy bridges your existing DA, HDA, and AE client applications to any OPC UA server. No rewrites, no replacements.

OPC UA Proxy Overview

How does OPC UA Proxy enable migration to OPC UA?

  • Enables instant migration to OPC Unified Architecture
  • Does not require replacing existing OPC Classic infrastructure
  • Acts as a bridge between OPC Classic and OPC UA
  • Allows OPC DA, HDA, and AE clients to communicate with OPC UA servers
  • Provides seamless communication between OPC technologies
  • Accelerates adoption of Industry 4.0
  • Ideal for gradual upgrades without disrupting operations
opc-architecture
Download User Guide

OPC UA Proxy Features

Migration Capabilities

  • Bi-Directional Communication: Enables OPC Classic clients to access OPC UA servers seamlessly 
  • Protocol Translation: Real-time conversion between OPC Classic and OPC UA data formats 
  • Zero Application Changes: Existing OPC clients work without modification or updates 
  • Incremental Migration: Migrate systems gradually without disrupting operations 
  • Industry 4.0 Enablement 
  • IIoT Connectivity: Connect legacy systems to modern Industrial Internet of Things platforms 
  • Platform Independence: Bridge Windows-based OPC Classic systems with cross-platform OPC UA infrastructure 

Technical Features

  • Multi-Server Support: Connect to multiple OPC UA servers simultaneously 
  • Tag Aliasing: Flexible tag mapping and naming conventions 
  • Data Type Conversion: Automatic handling of data type differences between protocols 
  • Subscription Management: Efficient handling of OPC groups and UA subscriptions 
  • Graphical Configuration: Intuitive wizard-based setup process 

Security & Performance

  • Secure Channel Support: Leverages OPC UA's built-in security features 
  • Certificate Management: Automated certificate handling and validation
Frequently Asked Questions

Yes, OPC UA Proxy is designed to be completely transparent to existing OPC DA, HDA, and AE client applications. No changes to your current software are required – simply point your clients to the proxy instead of the original server. 

The proxy manages the security transition by implementing OPC UA's robust security features (encryption, authentication, certificates) while maintaining compatibility with OPC Classic clients that may have limited security capabilities. To avoid DCOM configuration issues and security vulnerabilities, make sure to install the OPC UA proxy in the same machine as your client appplication. 

OPC UA Proxy supports incremental migration. You can migrate individual connections, servers, or entire systems at your own pace while maintaining operational continuity. 

OPC UA Proxy fully supports OPC HDA to OPC UA Historical Access mapping, ensuring seamless access to historical data through both classic and modern interfaces without data loss. 

OPC UA Proxy supports OPC UA specifications and works with any  OPC UA server. We've tested compatibility with major vendors including Siemens, ABB, Rockwell, and others. 

Resources & Documentation

OPC UA Proxy Resources

Product Datasheet

Comprehensive technical specifications and features overview

User Guide

Step-by-step installation and configuration guide

Related Blogs

See the OPC product in action with real-world examples

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