Changing parameters with time

I am building a simuling model that requires parameters to be changed to another value at a point in time (say t=4s). The model also requires seting the position of switches and circuit breakers at points in time. Is there a way to set this within simulink or is it necessary to create a script, if so is there any example i can use to be guided by?

Answer 1

[Fangjun Jiang]

Use the Step block. It can specify the initial value, final value and value-changing time.