Siemens SIMATIC PCS 7 SMART Getting Started page 190

Performing the additional task
11.4 Compile and download the changes
5. Make the following settings:
– Activate the "Changes only" option button in the "Scope" group.
– Activate the "Generate module drivers" check box.
6. Switch to the tab "S7 download".
190
The CPU only remains in process mode if you activate this option.
PCS 7 SMART Getting Started - Part 1 (V9.0 with APL)
Getting Started, 12/2017, A5E42181435-AA