I followed these steps scrupulously. I use 172.21.1.1 and 255.255.0.0 (after the failed attempt of 172.20.1.1), called my interface "fsd kli" and selected Target Subnet on Reception filter. Here is the same image of the manual that I have (FSD V4.0 ) and nothing seems to change between your version and mine in terms of KLI variant setup.
Regarding the X47 setup, can I simply unplug my cable from the X66 and plug it in the X47 inside my KRC4 compact and remove the KLI interface that i created ? Is the fact that it is a compact and not a standard KRC4 an issue ?
I don't have any EK1100 and BECkHOFF IO modules with me so I know that i can't use the X65 interface.