Strings that determine the data being retrieved. If the RTD server is run locally, the ServerName should be an empty string ("") or omitted. RealTimeServerProgID is a required argument.Ī string that represents the name of the server on which the RTD server is to be run. This is typically a COM add-in that is registered by a setup procedure or by using RegSvr32. Where the function arguments are as follows:Ī string that represents the Program ID of the RTD server installed on the local system. =RTD(RealTimeServerProgID,ServerName,Topic1. The RTD function uses the following syntax For example, if you use the RTD function in a workbook, you do not receive the Links startup message when you open the workbook, nor can you manage the status of an RTD function through the Edit Links dialog box. The RTD function differs from other functions in this regard because other functions are updated only when the worksheet is recalculated.Īlthough the RTD function provides a link to data on a server, it is not the same type of link as references to cells in other worksheets or workbooks. This relieves the developer of having to determine whether Excel is available to accept updates. The server waits until Excel is idle before updating. The function result is updated whenever new data becomes available from the server and the workbook can accept it. The RTD function retrieves data from an RTD server for use in the workbook.
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For more information about how to create an RTD server, see the "References" section. RTD depends on the availability of an RTD server to make the real-time data available to Excel. The RTD function is based on COM technology and provides advantages in robustness, reliability, and convenience.
In earlier versions of Excel, Dynamic Data Exchange (DDE) is used for that purpose. When you have to create a workbook that includes data that is updated in real time, for example, financial data or scientific data, you can now use the RTD worksheet function. This function enables you to call a Component Object Model (COM) Automation server to retrieve data in real time.
Microsoft Office Excel provides a worksheet function, RealTimeData (RTD). This article describes the functionality that the RealTimeData (RTD) function provides. For more information, see Excel Performance and Limits Improvements. The performance of the RealTimeData (RTD) function has been greatly enhanced in Excel M365 version 2002 or later.
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