Hello emresensoy, I recently wrote a driver for EL2522 which is available since linuxcnc-ethercat v1.41.2.
It supports Continuous Position (CSP-like) mode currently, as seen here:
github.com/linuxcnc-ethercat/linuxcnc-et...ster/examples/el2522
I hope you will find this useful, please let me know if you try the driver and encounter any problem, as I may be able to assist. Thanks.