What is meaning of inherited in sample time?

what is inherited in sample time and why default sample time is inheried ti inport block?

Answer 1

[Angelo Yeo]

Here is the documentation that you can refer to.

Types of Sample Time: Inherited Sample Time (MathWorks)

Long story short, for inherited sample time, Simulink decides the best sample time for the blocks based on the context of the model. Known sample times propagate forward and backward and Simulink has its own heuristics to determine its sample time if it's set to be "Inherited".

See below for details how Simulink assigns sample time.

How Propagation Affects Inherited Sample Times