Siemens SIMOTION P320-4 E Commissioning And Hardware Installation Manual page 122

Service and maintenance
10.3 Installing/removing SIMOTION P320-4 components
3. Unplug the battery connector.
4. Connect the battery plug to the new battery.
5. Remove the old battery from the holder.
6. Secure the new battery in the holder.
7. Close the battery compartment.
Reconfiguring the BIOS Setup
The battery change does not take longer than 30 seconds with the device switched off, the
BIOS settings are retained.
The SRAM and CMOS data of the SIMOTION P320‑4 is certainly deleted only when the battery
is disconnected for a longer period of time (more than 15 minutes) and in the switched-off state.
The BIOS Setup must be performed again if the data has been cleared. The CMOS data must
be restored to the default values; the date, time, and any special settings must be set again.
Note
Exception:
If the CMOS data has been saved previously with a USER profile, only the date and the time
may be set again. All other settings will be made automatically. This means that the default
values may not be loaded in this special case.
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SIMOTION P320-4 E / P320-4 S
Commissioning and Hardware Installation Manual, 01/2015