how to get mutliple data from serial port into simulink?

Hi everybody!

I'm trying to get serveral serial data from a µC into simulink, do some (real-time(?)) calculation there, and send back controll signals.

I played around with both serial_receive and query_instrument blocks (The later seems to work a bit smother regarding updating plots at regular intervals).

The problems start as soon as I try to get more than only on signal into Simulink, e.g. something like this (%4d %4d\r\n"):

I tried to add an ASCII-Decoder in both setups, but cannot find the right settings to get it work.

(1) gives produces error messages like

Input must be either 8 or 16 bit integers

An error occurred while propagating data type 'double' from 'running_Plot_edit/Query Instrument', output_port 1.

(2) Here values don't change in the plot, and if I terminate simulation or it reaches its end, Matlab crashes.

I tried several settings, likewise as it is suggested here https://de.mathworks.com/matlabcentral/answers/81343-ascii-decode-block-simulink

Do you think I didn't find the righte settings yet and that's it? Or would you create a serial port objekt in a Matlab file, do the conversion there, and import signals to Simulink afterwards?

Thanks for your help!