dOPC Client Toolkit Help file
TdOPCSvr Properties Published Properties
Published Properties
Published Property 
Active connects or disconnects from a OPC DA Server. 
ClientName contains a client name registered with TdOPCSrvs. 
ComputerName contains the name of the server to which the client is connected via the Connect method. 
KeepAlive specify a value in milliseconds to check the OPC server accessibility 
ServerName contains the name of the OPC DA server the client wants to connect with. 
Version contains the version of the dOPC component. 
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