B = isstatic(sys) returns a logical value of 1 (true) if the model sys is a static model, and a logical value of 0 (false) if sys has dynamics, such as states or delays. If sys is a model array, then B = 1 if all models in sys are static.

B = isstatic(sys,'elem') checks each model in the model array sys and returns a logical array of the same size as sys. The logical array indicates which models in sys are static.