Detailed Description

The DAConverter can be used to convert the input digital signal values to corresponding analog value.

Arguments

When operator is used inside a signal its default input is automatically tied to signal's InternalValue or previous operator's output. Its default output is automatically tied to next operator's input or to signal's Value. See also CDP Operator Usage In CDP Signals.

Example

Below is an example plot of digital input signal (cyan), the same signal with DAConverter(InputRange=64, OutputRange=1, Bipolar=true) applied (orange) and the state of OutOfRange output argument (yellow).

Actual Processing Code of the DAConverter

unsigned int DAConverter<double>::Process()
{
  if (!m_inputRange || !m_bipolar || !m_outputRange || !m_outOfRange)
    return STATUS_ERROR;

  unsigned int inRange = (unsigned int)*m_inputRange;
  double outRange = (double)*m_outputRange;
  if (inRange == 0 || outRange <= 0)
  {
    GetParent()->ReportConfigurationFault(this, "InputRange and OutputRange must be greater than zero");
    m_faultReported = true;
    return STATUS_ERROR;
  }

  bool bipolar = (bool)*m_bipolar;
  double out = (((double)m_input) - (bipolar ? (inRange / 2) : 0 )) / inRange * outRange * (bipolar ? 2 : 1);

  double rangeMin = bipolar ? -outRange : 0;
  if (out > outRange)
  {
    *m_outOfRange = true;
    out = outRange;
  } else if (out < rangeMin) {
    *m_outOfRange = true;
    out = rangeMin;
  } else
    *m_outOfRange = false;

  m_output = out;

  if (m_faultReported)
  {
    GetParent()->ClearConfigurationFault(this);
    m_faultReported = false;
  }
  return STATUS_OK;
}