ASI doesn't have any official support for MATLAB. However you can use MATLAB by sending serial commands to ASI controllers. See our Quick Start on Serial Commands page.
Here is a unofficial script to control ASI stages using an MS2000: https://www.mathworks.com/matlabcentral/fileexchange/19428-asi-microscope-stage-mover.
ASI officially supports Micro-Manager which can be accessed via Matlab. Micro-Manager provides a uniform API to control many microscopy devices. See https://micro-manager.org/wiki/Matlab_Configuration for information. (Note that ASI doesn't officially support the Matlab interface, just Micro-Manager itself).