Note: MDS diagnostic driver tags are only required in applications where you wish to gather data about an MDS radio. For example, a common arrangement might be an MDS radio connected to your PC, and a secondary MDS radio connected to an RTU or PLC at a remote location. In order to collect data from the RTU or PLC, your VTS application could use an appropriate communication driver tag (e.g. Allen-Bradley or Modicon), however, if you wish to gather data about either MDS radios in such a scenario (e.g. the temperature of an MDS radio), your application will require an MDS diagnostic driver tag.