Hi,
if the PLC stays in boot mode after setting the switch to RUN an CF card plugged in is an indicator that CF is not recognized or does not contain the operating system.
Also the message from RUC (partitions = 0) points into that direction.
Can you please check the partition data of the CF using Windows disk management?
Use disk management to create one FAT16 partition on the disk. If that works, Windows should assign a drive letter to the CF after partitioning is done, and the drive should be empty.
After that, keep the CF in your cardreader connected to Windows and perform an offline installation with Automation Studio to prepare the card for use inside the PLC.
If partitioning with disk management or the offline Installation does not work, it’s hard to say what’s the reason, but in most cases it’s a hardware issue with the reader or the CF itself.
Hope that helps, best regards!
Alex