Our Siemens driver does not support browsing so you have to type in an address manually. Open the designer and create an OPC tag in the SQLTags Browser. Give the tag a name, data type, select Ignition OPC-UA as the OPC server and the item path (address) should be:[DeviceName]DB1,X0.0You can take a look at our documentation for the Siemens driver for more information.