public ProgrammableLogicController(SimulationPage simulationPage, SfcEntity sfcEntity)
{
_simulationPage = simulationPage;
_inputRegisters = new ResettingStateTable(_simulationPage.SimulationOutput);
_outputRegisters = new ResettingStateTable(_simulationPage.SimulationInput);
SfcProgramData = new SfcProgramData(sfcEntity);
SfcProgram = new SfcProgram(this);
}
/// <summary>
/// Executes the ations with the marked qualifier in the given program context and delta time
/// </summary>
public void ExecuteActions(SfcProgram context, ActionQualifier qualifier, int deltaTimeMs)
{
List <AssignmentExpression> actions = _actions[qualifier];
foreach (AssignmentExpression action in actions)
{
action.Execute(context.Plc);
}
UpdateStepCounter(qualifier, deltaTimeMs);
}
/// <summary>
/// Calculates the transitions and updates the step status according to the result
/// </summary>
public void CalculateTransition(SfcProgram context)
{
foreach (SfcTransition transition in _transitions)
{
if (transition.CalculateTransition(context))
{
context.UpdateStepStatus(transition.NextSteps, transition.DependingSteps);
return; // If multiple transitions could fire due to user error, we use the first mode.
}
}
}
/// <summary>
/// Calculates if this transition fires or not.
/// </summary>
public bool CalculateTransition(SfcProgram program)
{
// All dependent steps must be active
foreach (SfcStep step in DependingSteps)
{
if (!program.Plc.SfcProgramData.IsStepActive(step))
{
return(false);
}
}
return(Transition.Result(program.Plc));
}