OPC DA Client

Manufacturing Suite

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OPC Connectivity Suite

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Product Overview

OPC DA stands for OPC Data Access. OPC Data Access (OPC DA) provides access to real time automation data. Using OPC DA, software applications can retrieve real-time data to enable them to monitor a given process.

The OPC DA Client driver and Kepware communications platform provide an easy and reliable way to connect disparate third-party OPC DA servers to your client applications, including HMI, SCADA, Historian, MES, ERP, and countless custom applications.

With the OPC DA Client driver you can manage operations through a single server interface, so there is no need to learn the different nuances of other third-party servers.

This driver also enables Oracle MES and MOC users to bring Kepware OPC operations and all other third-party OPC operations into your business applications.


  • Provides a single, reliable connection point to access data from multiple OPC servers on local and remote machines
  • Enables optimized performance of OPC servers through OPC groupings that may be different than those required or allowed by your clients
  • Supports connection monitoring and reconnect behavior for each OPC server
  • Provides connectivity to remote OPC servers for clients that do not support DCOM
  • Allows connectivity to multiple OPC servers from clients that do not support multiple connections or handle multiple connections well
  • Allows connectivity to OPC servers using different interfaces that are supported by clients, such as DDE, Wonderware SuiteLink, GE NIO, and so forth
  • Supports update by exception (Watchdog)
  • Automatically import OPC Server Items


  • OPC Data Access (DA)

Supported Devices

  • OPC DA Servers: 1.0, 2.0, and 3.0

Available Languages

  • English

Application Support

  • DDE Format CF_Text and AdvancedDDE
  • NIO Interface for iFIX
  • OPC .NET Service (OPC .NET) Version 1.00
  • 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.

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