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Differences Between Simulink Functions and Function-Call Subsystems

In a Stateflow® chart, a Simulink® function behaves like a function-call subsystem block of a Simulink model. (See Create a Function-Call Subsystem in the Simulink documentation.) However, these differences apply.

BehaviorFunction-Call SubsystemSimulink Function
Requires function-call output events for executionYesNo
Requires signal lines in the modelYesNo
Supports frame-based input and output signalsYesNo

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