This Class wil have a 'value' attribute.
This attribute is read on an Adc channel and is written on a Dac channel.
Its state will be FAULT if one of the 2 devices Adc or Dac is in Fault.
Its state will be UNKNOWN if one of the 2 devices Adc or Dac is in UNKNOWN state.
The device server is ready for distribution application programmers.
The author will be interested in any feedback which arise from their
usage of this device server.