This section describes the settings available under the Simulation page in the Project Settings dialog.
Top-Level Node. The node to be simulated. Naturally, all nodes directly or indirectly used by the top-level node will also be simulated.
Sample Time (s). The real time in seconds corresponding to one execution cycle. This setting specifies the output value of the Dt block, which is used in the definitions of, among others, the Derivative and the Integral blocks. Moreover, it is used to translate real time into execution cycles if you enter a real time value in the simulation time box in the toolbar of the main window. The value must be greater than 0.