For applications using the SAP DCOM Connector, use the SAP Automation DCOM Connector Logon Component to handle the connection to R/3 systems. Using this method requires only that you fill out the logon properties of the COM object. You do not need to actively establish a connection to R/3. The connection is established automatically whenever needed based on the logon properties of the COM object.
To learn more on how to obtain the data for the logon properties, see the help for the
COM-compliant programs who do not use the SAP DCOM Connector can use the Logon Control, documented here. Note that the Logon Control is an older component in the
SAP Automation DCOM Connector Logon Component.