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OPEraTING SySTEMS
4.7 Common (Windows and Linux)
4.7.1 Micro-UPS Handling
As also mentioned in the hardware related parts of this manual all C6 E22 / P3x devices
are equipped with a micro-UPS to ensure storage of Retain and Persistent variables of
the Control application in case of power lost.
To avoid inconsistent data sets, the Retain and Persistent variables will be stored only if
the µUSV is charged completely. Otherwise the capacity could not be sufficient to store
all variables and the consistency of the data set cannot be ensured.
The charging time of the micro UPS is about 15 s for C6 E22 / P3x devices, thus nor-
mally the micro UPS is always charged until the Control application is started after a
restart of the device. But for security and to keep the Control application easy portable to
devices this longer charging time the charging level should be evaluated in the Control
application.
For this an “Internal I/O Mapping” named “IoDrvUPS” is automatically available with the
C6 E22 / P3x device in KEB COMBIVIS studio 6.
