The only alternative would be to convert your KRC4C from using X11 Safety to using Network Safety. This would require a Safety PLC. And every Safety Device (E-Stop, Safety Gate, Light Curtain) would be wired to a Safety Input on the PLC. The Safety PLC would execute a Safety Program that would control the KRC4C's Safety Inputs over the network.
The KRC4 combact at our facility has X66 interface, and according to your comment, X66 can be used together with PROFIsafe/CIPsafety and Safety PLC.
Can I also connect signals required for SafeOperation to the X66 interface?