Detailed Description

The TPOperator is a pulse timer, or TP timer as referenced by IEC 61131-3 in PLC.

The TPOperator output (Q) is set to true right after the input (In) is set to true, and will then be true for the preset time (PT).

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 are the example plots for TPOperator input (In, cyan), output (Q, orange) and corresponding elapsed time (ET, yellow).

Actual Processing Code of the TPOperator

unsigned int TPOperator<bool>::Process()
{
  if (!m_PT || !m_ET)
    return STATUS_ERROR;

  if (!(bool)*m_in && (double)*m_ET >= (double)*m_PT)
    *m_ET = 0;
  if (((bool)*m_in || (double)*m_ET > 0) && (double)*m_ET < (double)*m_PT)
    *m_ET = (double)*m_ET + GetOperatorPeriod();
  *m_Q = (((bool)*m_in || (double)*m_ET > 0) && (double)*m_ET < (double)*m_PT);
  return STATUS_OK;
}