Setting Bus Diagnostics
Simulink provides
diagnostics that you can use to optimize bus usage. The MathWorks recommends
setting the following values on the Configuration
parameters > Diagnostics > Connectivity pane:

The last diagnostic, Bus signal treated
as vector, is enabled only when Mux blocks used to create
bus signals is set to error.
Setting Mux blocks used to create
bus signals to none disables
both diagnostics. Temporarily disabling the two mux and bus diagnostics allows you to debug
other bus problems before addressing mux and bus mixtures. You can then enable
the last two diagnostics and use them to eliminate any such mixtures.
When you build existing models, the diagnostic settings should be
as shown at all times. See Avoiding Mux/Bus Mixturesfor more information.
 | Introduction | | Optimizing Virtual and Nonvirtual Buses |  |
Learn more about Simulink through this collection of videos, articles, technical literature and the Getting Started with Simulink Guide.
Get this Simulink Kit