Siemens SIMATIC ET 200SP System Manual page 192

Station option 4: Opening a new potential group
A new potential group is opened at slot 3 of station option 4. Compared to the station master,
a dark-colored BaseUnit is replaced by a light-colored BaseUnit. Enter the value 1 as
additional function.
Figure 10-9
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ
Example: Hardware configuration of station option 4 with the associated control data
record in STEP 7
Configuration control (option handling)
10.5 Examples of configuration control
191