I would like to know if there was a function or a parameter allowing us to know if the reader reads correctly and/or the reader has finished to read the tag?
Thank you very much
Are you referring to an RFID checksum? You can Google RFID checksum and find all the info you could ever want on the subject.
The MCA software running in a default action mode simply accepts whatever value it is given by the RFID hardware. If you use the MCA API, then you can program it to do what ever you want (wait certain amount of time, check the number of characters received, check for a specific alphanumeric pattern, etc.) to validate it is the information you are expecting.