ardly: The part of the sentence between the two commas contains supplemental information and can be removed e.g. ; "But it works very well because I can print both the transmitted and received data without any need to 'interpret' anything".
That version of the sentence has a different meaning from my original. In your version I find it it is unclear where, or by what, the "interpret" action is done. It raises the question why would there be a need to "interpret".
My version makes it clear (I hope) that I am the interpreter.
I have the same problem with this version
"But it works very well because I can print both the transmitted and received data (and understand both of them) without any need to 'interpret' anything".
The words "understand" and "interpret" work together in this statement and should not be separated.