One way to do is to use Raspberry Pi UDP block and provide variable names instead of IP address and port number in the parameters.
For example:
IP address: IP Port number: Port
NOTE: Here, IP and Port are variable.
If you generate the c code using code gen of the model, then user driver code needs to change the values of the variables given in the parameters for IP address and Port number.
If you use it in the external mode and burn the binary to the board, then you can manipulate the variables values through MATLAB workspace.
