Lenze PC-based Automation Industrial PC - Manual (Page 76)

Industrial PC | Parameter setting & configuration
Data integrity in the case of a voltage failure
Backup for systems with UPS
76
L
2.5 EN - 01/2012
10.2 Backup for systems with UPS
If you use an industrial PC with UPS, all important data are saved automatically in the
event of a voltage failure. Furthermore, the UPS guarantees that the industrial PC is shut
down in a controlled manner by blocking the write access to the CF card when the backup
process has been completed. The backup process comprises the following steps:
 Saving of the PLC's retain variables
 Persisting of the logbook entries on the CF card
 Saving of logbook entries, trends and alarms of the »VisiWinNET®«-application
When the data is saved, the PLC is stopped. The log service does not accept any further log
messages and deactivates itself.

Note!
The UPS behaviour has to be configured via the <UPS parameter> codes, in a
compatible manner with the UPS hardware components.
By this a sufficient period of time for saving the data is provided.