DDE Client Driver OPC Server

Product # EX5-DDECC-NA00 - $995.00
Support & Maintenance within Warranty - $179.00
Support & Maintenance out Warranty / Expired - $497.50
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Kepware's DDE Client driver works in conjunction with our OPC Server KEPServerEX, to provide data exchange between OPC Clients and legacy DDE Server applications. If you have an OPC client application that needs to access an existing DDE server, this driver is the solution. Data integrity is ensured with our extensive error handling.

The DDE Client Driver is also included in the Manufacturing Suite.

DDE Client Driver Manua DDE Client Driver Manual (PDF)

DDE Client Driver OPC Server
Plug-in Driver Features:
  • The DDE Client Driver is capable of communicating with any server that supports the standard "CF TEXT" DDE data format
  • Clients may reside on remote machines and communicate with this driver via OPC or NetDDE. However, the current version of this driver cannot access data from DDE servers running on remote machines
  • The driver will automatically reconnect when DDE servers are brought back on-line
  • A "ReinitializeDDE" tag is provided to aid in the resolution of DDE communication failures
  • This driver uses "hot links", where a DDE server passes data to the driver only when the data value has changed. This provides a significant performance advantage over the alternative request/response loop approach since each DDE transaction is relatively time consuming
  • Addressing uses familiar "ApplicationName| TopicName ! ItemName" method for DDE server data
  • All major data types are supported

  • OPC
  • DDE

Application Support
Supported Devices
  • Can be used with any DDE server that supports standard Microsoft DDE. - See Specific Features for more information

KEPServerEX OPC Server

Drivers "Plug In" to KEPServerEX

The DDE Client Driver is a plug-in device driver for KEPServerEX. A "Plug-in" is a software program (.dll) that extends the capabilities of KEPServerEX to fit the communication requirements of a specific device or system. The plug-in driver handles all of the proprietary communications between the device/system and the OPC layer, KEPServerEX. The KEPServerEX core then handles all OPC and Proprietary Client communications between the plug-in driver and the Client application. For a complete list of features and capabilities please visit the KEPServerEX overview page.
  • OPC Foundation Certified: The best of OPC on the market
  • High Performance: Multi-threaded and Runtime Configurable
  • Detailed Protocol and OPC Diagnostics with communications trace
  • Native Interfaces: Client Connectivity Beyond the OPC Standards
  • Certified Stratus High Availability Computing
  • Certified Marathon High Availability Computing
  • 2 Hour Demonstration Mode on all Kepware products