Siemens SIMATIC NET CP 442-1 RNA Equipment Manual page 45

How to use the functions
You can start the memory reset functions in STEP 7. The CP must be in STOP. When you reset
memory using special diagnostics, the CP is automatically changed to STOP.
• Memory reset
– In STEP 7 V5.5 with the menu command "PLC" > "Clear/Reset"
– In STEP 7 special diagnostics with the "Operating Mode" > "Clear/Reset Module" menu
• Resetting to factory settings
– In STEP 7 V5.5 with the menu command "PLC" > "Edit Ethernet Node..." > Select CP >
– In STEP 7 special diagnostics with the "Operating Mode" > "Reset to Factory Settings"
Clear/reset module - effects
Following the memory reset, the CP retains the configured MAC address, the IP address and
the retentive parameters. The CP is therefore immediately ready for downloads using the IP
address.
The configuration data is retained on the CPU.
The CPU in the S7 station does not recognize that the CP memory was reset. The CP changes
to the "Stopped (STOP) with error" state (see LEDs (Page 29)). The configuration data must
then be reloaded. You can also initiate this loading by cycling power (OFF/ON).
Reset to factory defaults - effects
After resetting to factory defaults, the CP always retains the factory set MAC address (as
supplied).
The IP address and the configuration data in the CP RAM are deleted. The configuration data
is retained on the CPU.
CP 442-1 RNA
Equipment Manual, 03/2022, C79000-G8976-C318-05
command
"OK" > "Reset to Factory Defaults"
menu command
Configuration and operation
6.3 Memory reset / reset to factory defaults
45