Getting the structure of DBs

<datablock>

  <name>DB180</name>
  <variables>

    <variable>

      <name>COUNTER</name>

      <type>DInt</type>

      <offset>0</type>

    </variable>

    <variable>

      <name>TEMPERATURE</name>

      <type>Real</type>

      <offset>32</type>

    </variable>

    <variable>

      <name>FREQ</name>

      <type>Int</type>

      <offset>64</type>

    </variable>

  </variables>
</datablock>