AWOL:
The data you receive is the data you send.
How you interpret that data is a different matter, but that doesn't necessarily mean it is rubbish.Serial data is sent a byte (not a float) at a time - unlike satellites, it's not rocket science.
Start here
I understand that the data is sent back to Simulink as a byte or bytes. But sometimes my decimals may require more than a byte. I'm looking for a way to collect all the bytes and then get the decimal number.