After New Installation / Update Of The Simotion P Kernel; After Restoring A Backup Copy; After A Power Failure/Power Fail - Siemens SIMOTION P320-4 E Commissioning And Hardware Installation Manual

10.4.3

After new installation / update of the SIMOTION P Kernel

If a compatible SIMOTION P Kernel is installed on an already commissioned
SIMOTION P320‑4, the user data backed up in the SRAM is retained.
However, the current software version of the SIMOTION PP320-4 must be identical to the
software version with which the backed-up user data of the SRAM was created.
Now SIMOTION P320-4 is immediately ready to run again.
Note
If you do not want the backed up user data to be used again, you will have to recommission
the SIMOTION P320-4.
Note
Restart of SIMOTION P320-4 required
After a new installation or update of the SIMOTION P Kernel, a restart of the SIMOTION P320-4
is generally required.
If the device is not restarted, the new SIMOTION P Kernel is not activated and you continue
to work with the old firmware.
10.4.4

After restoring a backup copy

If a backup copy (storage medium image) of a commissioned SIMOTION P320-4 is reloaded,
the backed-up user data stored in the SRAM of the SIMOTION P320‑4 is used.
Now SIMOTION P320-4 is immediately ready to run again.
10.4.5

After a power failure/POWER FAIL

Case 1: SRAM saved
In the event of a power failure, the POWER FAIL detection feature integrated in the
SIMOTION P320‑4 will automatically cause the SIMOTION P firmware to save the user data
in the SRAM of the SIMOTION P320‑4. An SRAM image, however, cannot be created any
more in this case.
When the power supply returns or when the system is booted again, the data is available again.
Now SIMOTION P320-4 is immediately ready to run again.
Note
Backup of the user data in the SRAM of the SIMOTION P320‑4 in case of power failure is only
guaranteed if the SIMOTION P320‑4 is operated within its defined specifications.
SIMOTION P320-4 E / P320-4 S
Commissioning and Hardware Installation Manual, 01/2015
Service and maintenance
10.4 Special power-up situations
125