Simulink®

Converting a Subsystem to a Referenced Model

You can convert any atomic subsystem to a referenced model. The conversion requires that the model containing the subsystem have the following configuration parameter settings:

• Configuration Parameters > Optimization > Inline parameters must be enabled.

• Configuration Parameters > Diagnostics > Data Validity > Signal resolution must be Explicit only.

• Configuration Parameters > Diagnostics > Connectivity > Mux blocks used to create bus signals must be Error.

After specifying the indicated parameter values, select Convert to Model Block from the subsystem's context menu. Simulink^® does the following:

• Saves the contents of the subsystem as a new model. Simulink automatically provides a model name that is based on the block name and is unique in the MATLAB^® path. This name always contains fewer than 60 characters.

• Creates and opens an untitled model that contains a Model block whose referenced model is the new model that contains the contents of the subsystem.

If an error occurs during the conversion, the result depends on the error:

• For some errors, a message box appears that gives you the choice of cancelling or continuing.

• If continuing is impossible, Simulink cancels the conversion without offering a choice to continue.

Once you have successfully created a Model block and referenced model from a subsystem, you can delete the subsystem block from the source model and copy the Model block to the subsystem block's location. All signals will automatically reconnect. The source model is now a parent model that contains a referenced model.

You can use Simulink.SubSystem.convertToModelReference to convert subsystems to model references programmatically. The function provides more capabilities than Convert to Model Block, such as the ability to replace a subsystem with an equivalent Model block in a single operation. See the Simulink reference documentation for details.

Creating a Model Reference

Referenced Model Simulation Modes