Configure Board Parameters and Enable MAT-File Logging
To save signals on the hardware, the hardware details must be specified, and the MAT-file logging option must be selected.
- In your model window, open the Configuration Parameters dialog box, go to the Hardware Implementation pane, and select the name of the hardware from the Hardware board list. 
- In the Hardware board settings pane, expand Target hardware resources and select Board Parameters. Specify these parameter values: - Device Address: The IP address or host name of the hardware. 
- Username: Specify the user name of the Linux® system running on the hardware. 
- Password: Specify the root password of the Linux system running on the hardware.  
 
- Select Build options, and specify the location where you want to save the MAT-files in the Build directory parameter.  
- In the Configuration Parameters dialog box, go to Code Generation > Interface and expand Advanced parameters, or type - MAT-file loggingin the search box.
- Select the MAT-file logging option. 
- From the MAT-file variable name modifier list, select an option to add - rt_as prefix or- _rtas suffix to the variable name in the MAT-file. To use a variable name without any modification, select- none.
- Click Apply. Click OK to save your changes. 