How to access a data store block in a subsystem?

Hi, I have a model with multiple subsystems. Different subsystems change the value of a specific data in the main subsystem (which will be sent by USB port). Using GOTO block is not possible because multiple GOTOs to a FROM block is not allowed.

Using Data Store block is not very straightforward. Because it is not possible to a write or read a Data Store Block variable from other subsystems. Actually the subsystems do not "see" the Data Store block which resides in another subsystem.

I would like to place all subsystems in a Library, so using Simulink.Signals in Model properties is not possible.

Has anyone any solution for this problem?

Thanks in Advance.

Answer 1

[Akshat Dalal]

Hi Iman,

You could potentially model it as an global DSM with the Simulink.Signal defined in the base workspace. Please refer the following documentation for more information: https://www.mathworks.com/help/simulink/ug/model-global-data-using-data-stores.html

Since MATLAB R2023b, reference DSMs have been introduced which serve the exact purpose you're looking for. You could upgrade to R2023b or later releases if feasible. Please have a look at the following documenation for more information: https://www.mathworks.com/help/simulink/slref/datastorememory.html