“CR/LF” is not a protocol, it only implies that the protocol is text-based.
The protocol itself is described in document titled “MACE Firmware Guide”. Unfortunately I couldn’t find it in the internet, so please request it through your Nedap dealer.
What I indeed managed to find in Google is the firmware guide for another Nedap reader: ftp://ftp.impro.net/Firmware/3rd%20Party/NEDAP/uPASS/uPASS_FirmwareGuide_E.pdf
As you can see, according to the manual, reader sends text strings whenever a tag is read:
As my colleague mentioned earlier, you will need to write a simple script or program which listens to the RS-485 ports for these messages and process them according to your task.