Overload | Description |
---|---|
BeginRead(IList<ReadValueId>,UInt32,TimestampsToReturn,RequestSettings,AsyncCallback,Object) | Reads values and attributes asynchronously from OPC server. |
BeginRead(IList<ReadValueId>,UInt32,TimestampsToReturn,AsyncCallback,Object) | Reads values and attributes asynchronously from server. The default requests settings are used |
BeginRead(IList<ReadValueId>,UInt32,AsyncCallback,Object) | Reads values and attributes asynchronously from OPC server. The default requests settings are used. The timestamps are returned according the TimestampToReturn property (the default is SOURCE). |
BeginRead(IList<ReadValueId>,AsyncCallback,Object) | Reads values and attributes asynchronously from OPC server. The default requests settings are used. The timestamps are returned according the TimestampToReturn property (the default is SOURCE). MaxAge is set to 60000 (the cache value is returned unless the cache value is older than 1 minute). |
Target Platforms: Windows 7/8/10, Windows Server 2003/2008/2012/2015, .NET4.x