Hello,
I use your product QuickOPC for software development in Delphi language. I would like to ask you for one problem solution.

I develop software application for motor controlling. Application is based on your COM object imported to the Delphi as class TEsayUAClient. I use instance of your component as field in my own class which encapsulate the client functionality (TMTFControler). In constructor of the TMTFControler I create object of the COM:

TMTFControler.Create();
begin
OPCClient:=TEasyUAClient.Create(nil);
End;

and then I use OPCClient in other thread. When I don't call method Connect (OPCClient.Connect) then I receive exception ( class EOleSysError with message 'Nebyla volána procedura CoInitialize'). I see your example named ReadandDisplay and you don't call this method.
Sometimes error occurs when I close my application and I call procedure Connect in constructor of my class :

constructor TMTFMotorsController.Create;
begin
OPCClient:= TEasyUAClient.Create(nil);
OPCClient.Connect;
end;

destructor TMTFMotorsController.Destroy;
begin
OPCClient.Disconnect;
OPCClient.Free;
inherited;
end;

My next questions is about reconnect to the server. When I disconnect my UDP cable and I try read value from OPC then I receive exception:

First chance exception at $764BC44D. Exception class EOleException with message 'An OPC-UA operation failure with error code -2138701824 (0x80860000) occurred, originating from 'Opc.Ua.Core'. The inner OPC-UA service exception with service result 'BadSecureChannelClosed' contains details about the problem'. Process MTFMotorDriver.exe (5992)

In this case I detect problem with my cable. When I connect the cable and I try read some value then my application is freezing. I read some discussion on your forum about times of session, but I wasn't successful.
Thanks you for any advice.

Best regards
Roman