Simultaneous Events

There are three ways in which simultaneity can occur for events:

1. firing
2. calculation
3. execution

Firing

Simultaneous firing occurs when the time points at which the trigger expression changes from FALSE to TRUE coincide for several events. In order to recognize simultaneous firing of event triggers we must always check for the trigger condition of all events.

Calculation

Simultaneous calculation occurs when the time point firing or firing + delay for several events and the "Execution PRIOR to Processing" are equal.

Execution

Simultaneous execution occurs when the time point calculation or calculation + delay for several events and the "Execution PRIOR to Processing" are equal. In the case that simultaneous executions occur we stop the execution since the outcome of the simulation may depend on the order of processing. Later we may implement checks for situations in which the outcome is independent of the order of processing.