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Commissioning (software)
10.8 Data storage concept
Figure 10-10 Restore retain data
Note
In the event of a power failure of the SIMOTION P320-4, the retain data in PMEMORY.XML
will not be restored automatically.
Note
If a data inconsistency exists in the event of a power failure because the backup battery has
fallen below a threshold value, the data backup from PMEMORY.XML will be written back into
the SRAM.
10.8.4.5
Save unit variables and global device variables
Unit variables and global device variables are never retentive; the data will be lost in the event
of a power failure.
If the unit variables and global device variables which have not been declared as retain
variables are to be recovered after a power failure, the user program can use system functions
to save this data to data sets (files on the external CFast card).
Figure 10-11 Saving unit variables and global device variables
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SIMOTION P320-4 E / P320-4 S
Commissioning and Hardware Installation Manual, 11/2016
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