Siemens SIMATIC S7-1500 System Manual page 87

Configuring
Reading out the configuration of an existing station
When a connection exists to a CPU, you can load the configuration of this CPU (including
possibly present modules) from the device into your project.
To do this, create a new project and configure an "Unspecified CPU".
Figure 7-1
In the device view (or in the network view), select the "Hardware detection" command in the
"Online" menu.
Figure 7-2
86
Unspecified S7-1500 CPU in the device view
Hardware detection in the Online menu
S7-1500 Automation System
System Manual, 02/2014, A5E03461182-AB