mdl = 'scdtmpSetpoints';
mdlpath = fullfile(matlabroot,'examples','slcontrol',mdl);
open_system(mdlpath)Create an operating point specification object for the model.opspec = operspec(mdl);opspec contains specifications for the root-level input ports of the model.Obtain the index of the element that corresponds to the second signal in the Setpoints
input vector.index1 = getInputIndex(opspec,'scdtmpSetpoints/Setpoints',2)index1 =15 Alphabetical List