Hello Youssef,
I interpret from the question that you are trying to use CAN protocol and also you want to know about concatenating multiple signals into one.
Please find detailed description of the CAN bus protocol in the documentation link provided here:
To concantenate signals into one, you can "MUX" block or "Vector Concatenate" block. The MUX block combines all of the input vectors to a single vector and can be used in combination with the DEMUX block to retrieve the original signals.
Please find the documentation links for "MUX" and "Vector Concatenate" blocks below:
Vector Concatenate: https://in.mathworks.com/help/simulink/slref/vectorconcatenate.html
I hope the above helps!
Thank you.
