LinuxCNC machine setup with Rasperry Pi4 and Mesa 7i76 for communication

Hello everyone, after the resignation of my very esteemed colleague, I need to set up the software on a functional system using a LinuxCNC mesa7i76e card with a Raspberry Pi 4. When the SD card got corrupted, I had to reinstall the software, but I have no knowledge about this subject. I downloaded the LinuxCNC 2.8.0-pi4 image file from the internet and wrote it to the SD card. The system runs, but I can't establish communication with the Mesa card during the setup. If anyone can provide support on this matter, I would appreciate it. Thank you in advance and have a good day.

Read this page
linuxcnc.org/docs/2.9/html/man/man9/hm2_eth.9.html

Be mindful that your interface should be eth0 rather than eth1. Be sure to read the manual for your Mesa card with regards to setting the address of the card.