ThingMagic M5e-Compact - Manual (Page 60)

Format for Microprocessor Reply to Host
60 Overview of the Communication Protocol
Here is an example of a Reply message with Data Field Length not zero. This message
happens to be a successful reply to Read Tag Single command.
FF 0A 21 00 00 C8 05 07 A8 00 84 C4 FF 9E E0 F7 25
SOH Length OpCode Status Tag ID Tag CRC CRC