simulink serial receive header

I'm reading serial data from FPGA (RS232).But I dont know how to define a header properly. Thanks for helping!

Answer 1

[xie jiaxin]

Header Specify data that marks the beginning of your data block. The header indicates the beginning of a new data block and the simulation will disregard data that occurs before the header. The header data is not sent to the output port. Only data that occurs between the header and the terminator is sent to the output port. By default none or no header is specified.

Anything entered in the header is treated as a character. If you want to specify numbers, you need to use the corresponding ascii characters for them. For example, to specify [40 41], you can enter () in the field. Note that single quotes are also treated as characters. You can use the corresponding ascii characters for the numbers between 32 and 126.

[Zemiao Fang]

What if the number not between 32 and 126? For example [20 170]