How to get rid of garbage in UART?

Question

Arduino

Good day.
I communicate with Arduino via USB\Serial interface. In response, it gives: XXXX:1450:1:2\r\nXXXXX
X - garbage. How to get rid of garbage? Usually these are characters of an unknown encoding. I don’t really understand what kind of information this is, maybe something official.
I can remove everything at the Server level, which works with Arduino, but I would like to understand where this mess comes from.
It turned out badly, I got confused myself in my "system", until I freshen up, the question is closed. I'm sorry I wasted your time.

Answer 1

Judging by the tag, MODBUS is meant, this is not the same as just data transfer, this protocol has a header and other technical information that looks like garbage through serial.