Siemens SIMATIC S7-1500 Automation System System Manual page 81

After you have selected the CPU in the "Hardware detection for PLC_x" dialog, and have
clicked the "Detect" button, STEP 7 loads the hardware configuration (including modules)
from the CPU into your project.
Figure 7-4
S7-1500 Automation System
System Manual, 01/2013, A5E03461182-01
Result of the hardware detection in the device view
Configuring
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