The simulation time unit is defined in the tag "timeUnit" of an SimulationConfig stereotype. If you do not define the value of this tag, the default unit of time is the millisecond. You can use ALH API to get a simulation time unit of execution.
public double getTimeUnit(String timeUnit) {
...
}
The following code fragment shows how to get the TimeUnit tag of a SimulationConfig through ALH API.
ALH.getTimeUnit(); // millisecond