Siemens SIMATIC S7-1200 System Manual page 717

Example: Changing to a new HW limit switch address with edge detection and deactivating edge
detection on the old address
1. Current state: You have connected an "Input low HW limit switch" to I0.2. This
configuration automatically enabled edge detection on I0.2. This configuration is also
shown in the CPU Properties, Digital Inputs:
2. You change "Input low HW limit switch" to I0.6 and confirm. The edge detection dialog
displays. You select: "Yes: Change address and deactivate edge detection on old
address.":
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
Technology instructions
10.3 Motion control
717