MATLAB: Sampling time must agree

Question

i have an chart which run on event of 1 milli second and i have included the PID library inside sateflow .when ever i click on tune option i get error as sampling time must agree and when i try to run the model i get error asking me to change the sampling time of PID library to -1(inherited ) or constant .

Answer 1

Blocks inside Stateflow Simulink functions must inherit their sample time. This is because there is no way for the engine to know when you will call the function.

If the logic in your Stateflow chart systematically calls the Simulink function at 0.001s, there is no problem setting the sample time of the PID block to -1. Results should be the same as if it had a sample time of 0.001s