KEB COMBICONTROL C6 HMI, Инструкция по эксплуатации

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Note : Current implementation if affected by a jitter of about +/- 2ms when working
with I/O over Ethernet interface.
Note : The Ethernet interface assigned to an I/O Ethernet master (Ethercat or Mod-
bus TCP) is exclusively dedicated to the I/O and must not be used for any other pur-
pose (no programming, no COMBIVIS HMI protocol).
5.2.5 Support for retentive data
C6 HMI LC systems are equipped with a Micro UPS specifically designed to support
the data memory retention.
In COMBIVIS studio 6 the retentive variables can retain their value throughout the
usual program run period. They are declared as “Retain Variables” or even more
stringent as “Persistent Variables”. For each case a separate memory area is used.
Please check the COMBIVIS studio 6 manual for any additional detail about reten-
tive data.
The use of the retentive areas does not require any specific configuration except for
declaring the variable in the proper area according to the COMBIVIS studio 6 pro-
gramming manual.
At the moment of a power failure (when the voltage is below the threshold for
more than 50ms)
the UPS triggers an event and the system will switch off the display and the USB
device connected in order to save energy, and will follow a four step sequence to
save data:
1. The panel display and the USB ports are turned off
2. All running IEC tasks are terminated so the retentive areas are consistent
3. The system starts flushing the retentive memory areas to a file which is
saved on disk
4. The CONTROL Runtime is terminated
The panel continues to run until the Micro UPS is able to provide power to C6 HMI
LC.