Using TOP Server with DDE Clients & Servers

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Bring in Data from Legacy
DDE Servers, Serve Data to DDE Clients

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DDE Server and Client

NOTE for DDE users

TOP Server V5 must run in Interactive Mode and will not run as a Service, if you will be using DDE.

Before OPC connectivity there was DDE. The TOP Server will provide DDE connectivity to legacy applications that don’t support more advanced methods of data transfer. If you are not sure what DDE is see the dictionary of terms at our Technical Expertise Center. The Alias Map of the TOP Server lets you create topics for use in your DDE Client applications (click here to learn more about the Alias Map).

NOTE: For the DDE interface and settings to be installed for TOP Server, you must select the “Dynamic Data Exchange (DDE)” option from the Native Client Interfaces during TOP Server installation (see screenshot below).

The TOP Server also has the ability with the DDE Client Driver to connect to your legacy DDE Servers and provide the information via OPC or any of the other Connectivity options supported by the TOP Server.

The DDE Settings can be found in the Project Properties as show below. The default DDE Service name is toolboxdde and is not related to running as a System Service.

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For more advanced DDE connectivity with Excel we also recommend the Cogent DataHub®

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