Siemens SIMATIC ET 200SP System Manual page 166

Configuration control (option handling)
9.5 Examples of configuration control
Station option 3 with empty slot
The module that is located in slot 3 in the station master occupies an empty slot with
BU cover in the station option. Enter the value 130 in slot 3 in the control data record.
Figure 9-8
166
Example: Hardware configuration of station option 3 with the associated control data
record in STEP 7
Distributed I/O system
System Manual, 12/2015, A5E03576849-AF