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

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NOTE for DDE Client & DDE Client Driver users

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

Win XP / Server 2003 Details

Vista and Newer Details

DDE Server and Client

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 Client 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).

Native Client Interfaces DDE

 

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.  Please see the important note above regarding special requirements for DDE connectivity on certain operating systems.

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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V5_ProjectProperties_DDE

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

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