Siemens SIMATIC ET 200SP System Manual page 218

Maintenance
12.6 Resetting CPU/interface module (PROFINET) to factory settings
Procedure using STEP 7
Make sure that an online connection to the CPU exists.
To reset a CPU to factory settings using STEP 7, follow these steps:
1. Open the Online and Diagnostics view of the CPU.
2. In the "Functions" folder, select the "Reset to factory settings" group.
3. If you want to keep the IP address, select the "Retain IP address" option button. If you
want to delete the IP address, select the "Reset IP address" option button.
4. Click the "Reset" button.
5. Click "OK" in response to the confirmation prompts.
Result: The CPU executes the "Reset to factory settings", during which time the RUN/STOP
LED flashes yellow. When the RUN/STOP LED lights up yellow, the CPU has been reset to
factory settings and is in the STOP mode. The "Reset to factory settings" event is entered in
the diagnostics buffer.
Result after resetting to factory settings
The following table provides an overview of the contents of the memory objects after the
reset to factory settings.
Table 12- 3
Memory object
Actual values of the data blocks, instance data blocks
Bit memory, timers and counters
Certain retentive tags from technology objects
(e.g. adjustment values of absolute encoders)
Diagnostics buffer entries (retentive area)
Diagnostics buffer entries (non-retentive area)
Counter readings of the runtime meters
Time of day
If a SIMATIC memory card was inserted prior to the factory reset, the CPU downloads the
configuration contained on the SIMATIC memory card (hardware and software). A
configured IP address then becomes valid again.
Reference
Additional information on the topic "Resetting to factory settings" can be found in the
Structure and use of the CPU memory
(http://support.automation.siemens.com/WW/view/en/59193101) function manual, section on
memory areas and retentivity, and in the STEP 7 online help.
218
Result after resetting to factory settings
Content
Initialized
Initialized
Initialized
Initialized
Initialized
Initialized
Initialized
Distributed I/O system
System Manual, 12/2015, A5E03576849-AF