There are several ways in which you can import excel data and use it in Simulink:
Use the From Spreadsheet blockin Simulink to read data from Microsoft® Excel® and outputs the data as a signal. Here is a Blog post giving further details on Importing Data From Excel into a simulation using the From Spreadsheet Block.
Or, alternatively, you can import Excel data into MATLAB and then use those MATLAB variables as inputs to Simulink:
Use the importdata function in MATLAB and create an array (say ‘A’) of all the values imported and then change the variable name in each block to A(1), A(2),…….A(100)
Or similarly, use the Import Tool to import data from a spreadsheet into the MATLAB workspace.