A simulation step is a change in the system status in response to external stimuli or internal changes. A step can be triggered by an action (internal or external) or the trigger can be a timeout event occurring as a result of incrementing time.
A simulation step is a two stage process; it occurs as follows:
When the simulation execution begins, and before the first step is performed, the default initial status of the system is:
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● All primitive conditions are false. All primitive numeric data-items are zero and string data-items are blank.After the first simulation step is taken, the system status is:
● The state configuration includes the default states of the Statecharts connected to any active control activity, or defined to be a Testbench.
● All other elements of the system status are modified in accordance with actions performed on default connectors or by static reactions on entrances into these states.