Siemens SIMOTION P320-4 E Commissioning And Hardware Installation Manual page 98

Commissioning (software)
9.8 Data storage concept
Various mechanisms are available for backing up and restoring data for the SIMOTION
P320-4.
These mechanisms are described in the following sections, starting with the largest possible
scope of a backup to the backing up of variables.
Although the backup/restore of data in many cases is initiated by the user, it is sometimes also
performed automatically or started by the user program.
In addition to restoring defined states and updating / reloading a project in the target device,
data backups are also needed to prevent data loss resulting from a hardware defect or failure
of the backup battery.
Project update
The Project update (Page 99) section describes options for updating/retransmitting or backing
up a SIMOTION project.
Application
● Transfer of a project to the newly installed SIMOTION P320-4
● Series commissioning
Advantage
Series commissioning is also possible without a programming device or using remote
maintenance.
Disadvantages
The SIMOTION version on the target device must exactly match the version of the device on
which the backup was created.
Single backups
The Single backups (Page 104) section describes the options for backing up and restoring
retain variables, retain TOs, unit variables, and global device variables.
Application
● Data backup when replacing the SIMOTION P320‑4
● Restore the SRAM after a failed consistency check (battery failure,...)
● Backup the data for Unit variables and device-global variables from the RAM
● Backup values (variables) from the RAM
● Restore a defined state of the machine
Advantages
● The user program can use system functions to perform a backup
● Version-independent restoring of the retain data (non-volatile SIMOTION data)
Disadvantages
No complete backup
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SIMOTION P320-4 E / P320-4 S
Commissioning and Hardware Installation Manual, 01/2015