dOPC Client Toolkit Help file
TdOPCGroup.XMLWaittime Property
__published: __property int XMLWaittime;
int XMLWaittime;
Visual Basic
Property XMLWaittime() As Integer

XMLWaittime (milliseconds) instructs the server to wait the specified time after the XMLHoldtime is reached before returning.

A change in one of the items in the group during this wait period will result in the server returning immediately rather than completing this time. For further information please read chapter the "Subscription architecture" of the OPC XML DA specification. You can download the OPC XML DA specification from

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