Siemens SIMATIC S7-1200

Online and diagnostic tools
15.5 Resetting to factory settings
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
1317
15.5
Resetting to factory settings
You can reset an S7-1200 to its original factory settings under the following conditions:
● The CPU has an online connection.
● The CPU is in STOP mode.
Note
If the CPU is in RUN mode and you star
t the reset operation, you can place it in STOP
mode after acknowledging a confirmation prompt.
Procedure
To reset a CPU to its factory settings, follow these steps:
1. Open the Online and Diagnostics view of the CPU.
2. Select "Reset to factory settings" from the "Functions" folder.
3. Select the "Retain IP address" check box if you want to retain the IP address or the
"Delete IP address" check box if you want to delete the IP address.
4. Click the "Reset" button.
5. Acknowledge the confirmation prompt with "OK".
Result
The module switches to STOP mode if necessary, and it resets the factory settings. The
CPU performs the following actions:
With memory card installed in CPU
Without memory card installed in CPU
• Clears the diagnostics buffer
• Resets the time of day
• Restores work memory from the memory card
• Sets all operand areas to configured initial
values
• Sets all parameters to their configured values
• Retains or deletes the IP address based on
the selection you made. (The MAC address is
fixed and is never changed.)
1
• Deletes the control data record (Page 159), if
present
• Clears the diagnostics buffer
• Resets the time of day
• Clears the work memory and internal load
memory
• Sets all operand areas to configured initial
values
• Sets all parameters to their configured values
• Retains or deletes the IP address based on
the selection you made. (The MAC address is
fixed and is never changed.)
1
• Deletes the control data record, if present
1
If you selected "Retain IP address", the CPU sets the IP address, subnet mask, and router ad-
dress (if used) to the settings in your hardware configuration, unless you have modified these val-
ues from the user program or another tool, in which case the CPU restores the modified values.