Siemens SIMATIC S7-1500 Automation System System Manual page 126

Maintenance
9.5 Resetting the CPU to factory settings
Note
The IP address of the CPU is also deleted when the CPU is reset to the factory settings
through the mode selector.
Procedure using the display
Make sure that the CPU is in STOP mode (RUN/STOP LED lights up yellow).
To navigate to the desired "Factory settings" menu command, select the following sequence
of menu commands and confirm after each selection with "OK".
● Settings → Reset → Factory settings
Result: The CPU executes a "Reset to factory settings", during which time the RUN/STOP
LED flashes yellow. When the RUN/STOP LED lights up yellow, then the CPU has been
reset to factory settings, and is in the STOP mode. The "Reset to factory settings" event is
entered into the diagnostics buffer.
Note
The IP address of the CPU is also deleted when the CPU is reset to the factory settings
through the display.
Procedure using STEP 7
Make sure there is an online connection to the CPU that is to be reset to the factory settings.
1. Open the Online and Diagnostics view of the CPU.
2. In the "Functions" folder, select the "Reset to factory settings" group.
3. Select the "Retain IP address" option button if you want to retain the IP address, or the
4. Click the "Reset" button.
5. Click "OK" in response to the confirmation prompts.
Result: The CPU executes a "Reset to factory settings", during which time the RUN/STOP
LED flashes yellow. When the RUN/STOP LED lights up yellow, then the CPU has been
reset to factory settings, and is in the STOP mode. The "Reset to factory settings" event is
entered into the diagnostics buffer.
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"Reset IP address" option button if you want to delete the IP address.
S7-1500 Automation System
System Manual, 01/2013, A5E03461182-01