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The Fixed-Point Tool derives minimum and maximum values for referenced models. The simulation mode is not relevant for the analysis — instances of the referenced models can be in any simulation mode.
The Fixed-Point Tool displays the top-level model that contains the referenced models and the referenced models in its Model Hierarchy pane. For example, the ex_derived_sum_multi_instance model contains two instances of the referenced model ex_sum. The Fixed-Point Tool displays both models and both instances of the referenced model in the model hierarchy.
If a model contains multiple instances of the referenced model, the tool displays each instance of the referenced model as well as a node for the referenced model. For example, here are the results for the first instance of the referenced model ex_sum1 in ex_multi_instance.
Here are the results for the second instance of ex_sum1.
In the referenced model node, the tool displays the union of the results for each instance of the referenced model.
When you derive minimum and maximum values for a model that contains referenced models, the data type override setting for the top-level model does not control the setting for the referenced models. You must specify the data type override setting separately for the referenced model.
You can set up user-defined shortcuts across referenced model boundaries. The factory default shortcuts apply only to the top-level model and so do not affect the settings of any referenced model.
When you change the fixed-point instrumentation and data type override settings for any instance of a referenced model, the settings change on all instances of the model and on the referenced model itself.