Bus Creator: Import signals list from bus object

Hello everyone,

is there a way to import the signal list from a bus object into the Bus Creator block from a predefined Bus Object in a Data Dictionary?

I found the Bus Object Bus Creator in the file exhange (https://uk.mathworks.com/matlabcentral/fileexchange/50601-bus-object-bus-creator) wich does the trick for me, but unfortunately it cannot read bus objects from Data Dictionaries (fondamental feature).

I find this problem a huge missing in the simulink base libraries.

Without a feature like this bus objects become useless, programming becomes hard and mainance impossible if you have a huge control application with hundreds of subsytems/submodels with thousands of variables and hundreds of buses.

Marco.

Answer 1

[Aabha]

Hi @marco abbondanza,

I faced a similar difficulty, while reading bus objects from the data dictionary. However, there is a workaround to this problem, where data dictionary elements can be programmatically accessed and modified. The following code can be run in the MATLAB Command Window, to create a bus object in a data dictionary linked to a Simulink model and subsequently link its elements to a Bus Creator block.

dataDictionary = Simulink.data.dictionary.open('myDictionary.sldd'); 
section = getSection(dataDictionary, 'Design Data') 

Assuming there is a Simulink bus object titled “myBus”, it can be linked to the dictionary as follows:

addEntry(section, 'MyBus', myBus); 
busObj = getEntry(section,'MyBus') 
busValue = getValue(busObj) 
open_system('yourModel') 
busCreator = add_block('simulink/Signal Routing/Bus Creator', 'yourModel/BusCreator');
set(busCreator, 'Inputs', num2str(length(busValue.Elements)));

This adds a bus creator block, where the signal list is imported from a bus object in the corresponding data dictionary.

I hope this helps.