OPC UA Client

Manufacturing Suite

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OPC Connectivity Suite

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Siemens Plus Suite

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Product Overview

An OPC tunneling solution includes the Kepware connectivity platform with the OPC UA Client driver. The OPC Unified Architecture (UA) open standard is used to provide an ideal tunnel for device communications between two instances of Kepware: one instance that functions as the tunnel client and another instance that functions as the tunnel server. The OPC UA Client driver pairs with the UA Server interface of Kepware to transfer data securely and reliably.

The tunneling solution uses a client/server architecture for secure and reliable real-time data tunneling through firewalls and across the internet, WAN, or LAN. It also allows for easy remote communications between devices, data sources, and applications by eliminating the reliance on Microsoft COM and DCOM technology.


  • Supports OPC tunneling for OPC DA 1.0 and 2.05a
  • Works within the corporate network, over VPNs, through firewalls, and across the internet, WAN, or LAN
  • Provides remote access for OPC, native interfaces, and DDE
  • Supports Media Level Redundancy, including the ability to configure secondary tunnels and triggering conditions
  • Includes data encryption via RSA Standards
  • Offers endpoint authentication through x509 certificates
  • Features automatic discovery of OPC UA servers
  • Supports structured data for communication and storage optimizations
  • Supports the Nano profile to allow OPC UA access to data produced by embedded devices
  • Features automatic tag database generation
  • Has the ability to set OPC UA server priorities
  • Supports Poll or Report by Exception (on data change)
  • Offers endpoint management on a per connection basis
  • Has the ability to integrate third-party server data with all Kepware drivers
  • Offers Keep Alive and Watchdog features to ensure reliable connectivity


  • OPC Unified Architecture (UA)

Available Languages

  • English
  • German
  • Japanese
  • Simplified Chinese

Application Support

  • DDE Format CF_Text and AdvancedDDE
  • NIO Interface for iFIX
  • OPC Alarms and Events (OPC AE) Version 1.10
  • OPC Data Access (OPC DA) Versions 1.0a, 2.0, 2.05a, and 3.0
  • OPC Unified Architecture (OPC UA) Clients
  • SuiteLink and FastDDE for Wonderware


Release Notes

Access and search all Kepware product release notes here.

Featured Suites


  • Easier setup and configuration than DCOM
  • Firewall-friendly
  • Robust portfolio of client interfaces and devices
  • Secure and reliable data transfer using 256-bit AES message signing and encryption
  • Multi-threaded architecture and non-blocking asynchronous messaging for performance, scalability, and reliability
  • Easy troubleshooting through diagnostic tools