UHF rfid reader connection

Hi,
I’m doing a project with UHF RFID reader rm 9001 (850-900mhz)
Also, I have RS232 port that connect both of them,
Reader ——> RS232 ——> Arduino.

Additionally, I also wants to display the RFID tag information like name and number on LED display.

My apologies to ask directly,
Does any one know or have the Arduino Code? Please shear it with me. It will be appropriated.

Thank you for your time and consideration.