Acknowledgment of PROFIsafe data exchange

The PROFIsafe communication must be fault-free for safe data exchange of the safety option via PROFIsafe. As soon as there is an acknowledgment request of the safety option via the ACK_REQ bit in the F-periphery data component, the user must trigger an acknowledgment by a rising edge via the ACK_REI bit.

As soon as the safe data exchange of the safety option using PROFIsafe is fault-free, faults in the safety option can be acknowledged by a 0 → 1 edge with the "Acknowledgment" bit in the F-process data profile.