Detailed Description

The NormalPositionOperator inverts signal value based in NormalPosition value.

A NormalPositionOperator sets output value equal to inverse of input value if NormalPosition is set to Normally Closed (1) and output value equal to input value if NormalPosition is set to Normally Open (0). NB! NormalPositionOperator is implemented for boolean signals only!

Properties

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.

Actual Processing Code of the NormalPositionOperator

unsigned int NormalPositionOperator<bool>::Process()
{
  if(d->normalPos)  //normally closed
    m_output = !m_input; //invert
  else //normally open
    m_output = static_cast<bool>(m_input); // do nothing, just pass through

  return STATUS_OK;
}