{"id":15292,"date":"2023-09-27T13:07:04","date_gmt":"2023-09-27T17:07:04","guid":{"rendered":"https:\/\/blogs.mathworks.com\/simulink\/?p=15292"},"modified":"2023-09-27T13:07:04","modified_gmt":"2023-09-27T17:07:04","slug":"signals-vs-parameters-in-simulink-and-the-parameter-writer-block","status":"publish","type":"post","link":"https:\/\/blogs.mathworks.com\/simulink\/2023\/09\/27\/signals-vs-parameters-in-simulink-and-the-parameter-writer-block\/","title":{"rendered":"Signals vs Parameters in Simulink… and the Parameter Writer block"},"content":{"rendered":"
A colleague recently told me that he was often referring users to this blog post I wrote many years ago: <\/span>How Do I Change a Block Parameter Based on the Output of Another Block?<\/span><\/a><\/div>
Even if most of what I wrote in that post still holds today, I thought it would be a good idea to revisit this topic and describe how the <\/span>Parameter Writer<\/span><\/a> block modifies the game.<\/span><\/div>
Signals vs Parameters in Simulink<\/span><\/div>
In <\/span>How Do I Change a Block Parameter Based on the Output of Another Block?<\/span><\/a>, I tried to explain something fundamentally different between MATLAB and Simulink. In general, in MATLAB, all the data you create and operate on is stored in variables. You double-click on entries in the Workspace Browser, it opens the Variable Viewer to show the value:<\/span><\/div>
\"\"<\/img><\/div>
In Simulink there are two types of data: <\/span><\/div>