dOPC Client Toolkit Help file
Example
procedure TForm1.Button1Click(Sender: TObject);
var
  Item : TdOPCItem;
begin
  Item := dOPCGUI1.GetdOPCItem(Edit1); //get OPC item from control
  if item <> nil then //if item assigned
    Item.WriteSync('Hello') //write new value to item
  else
    ShowMessage('no item assigned');
end;
Copyright © 2001-2014 Kassl GmbH (http://www.kassl.de). All rights reserved.