How to connect bus signal with different data size using multiport switch?
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Hi,
I have two subsystems, and I want to minimized the data size for the signal that is been transfered in between the subsystems. The following figure shows the ideal case. When Constant1 = 1, the first signal with size {1} is transmitted; when Constant1 = 2, the second signal with size {2} is transmitted; Unfortunately, there will be error pop-up regarding to data size mistmatching in this model, which is attached. How could I solve this error or is there other approach to minized this data size. Noted that the constant value should be constant during the simulation.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/473963/image.png)
Regards,
Andy
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Mark McBroom
2021-1-4
I made a number of changes to your model, most importably was to remove mux blocks. Mux blocks should not be used. Use Vector/Matrix concat blocks to create vectors/matrices, use Bus Creater blocks to create buses.
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Mark McBroom
2021-1-1
On the Multi-port switch block, on the Signal Attirbutes tab, check the box "Allow different data input sizes".
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