268 PROFIsafe
• I/O addressing is assigned automatically to FENA. This can be seen in Device
view (highlighted with a red box in the image below).
8. Select PLC from network view and Properties will show on the bottom of the
screen. In PLC properties, enable F-capability (safety and PROFIsafe) under the
Fail-safe submenu.
9. In the F-parameters submenu, define the maximum allowed safety program
execution interval. If this value is exceeded, PROFIsafe goes to safe state
(watchdog).