Simulink®

Masking a Block

About Block Masking

You use the model editor to mask Subsystem, Model, and S-function blocks, and the set_param command to mask built-in blocks.

Note   The Simulink® product does not support masking port block, e.g., Inport, Outport, Trigger, etc., used in a library.

Note   Ensure that the mask parameter names differ from existing block parameter names. You cannot use built-in block parameter names, such as name, as mask parameter names. Doing so will result in an error message being displayed.

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Masking a Subsystem

To mask a Subsystem:

1. Select the block.

2. Select Mask Subsystem from the model editor's Edit menu or from the block's context menu. (Right-click the subsystem block to display its context menu.)

   The Mask Editor appears.

   

   See Mask Editor for a detailed description of the Mask Editor.

3. Use the Mask Editor's tabbed panes to perform any of the following tasks.

   • Create a custom icon for the masked subsystem (see Icon Pane).

   • Create parameters that allow a user to set subsystem options (see Mask Editor).

   • Initialize the masked subsystem's parameters

   • Create online user documentation for the subsystem

4. Click Apply to apply the mask to the subsystem or OK to apply the mask and dismiss the Mask Editor.

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Masking a Built-in Block

You can reduce the size of your model by directly masking built-in blocks instead of placing them inside a subsystem. To mask a built-in block:

1. Select the block in the model.

2. Type the following command at the MATLAB^® command prompt:

   set_param(gcb,'Mask','on')

3. Select Edit Mask from the model editor's Edit menu or from the block's context menu. (Right-click the block to display its context menu.) The Mask Editor appears. See Mask Editor for a detailed description of the Mask Editor.

4. Use the Mask Editor's tabbed panes to perform any of the following tasks.

   • Create a custom icon for the masked block (see Icon Pane).

   • Create a custom mask parameter dialog box for the block (see Parameters Pane).

   • Initialize the masked block's workspace

   • Create online user documentation for the block

5. Click Apply to apply the mask to the block or OK to apply the mask and dismiss the Mask Editor.

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Masked Subsystem Example

Mask Editor