Functions
10.7 Battery monitoring
SIMATIC HMI IPC677C
Operating Instructions, 04/2013, A5E02722710-04
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A corresponding function is implemented there for using the SRAM under WinAC RTX.
Note
If replacement of the battery takes longer than 30 seconds, the data saved in the CMOS
RAM and in the buffered SRAM is lost.
Note
The buffer memory SRAM is available only with devices with PROFIBUS or PROFINET
interfaces.
10.7
Battery monitoring
The installed backup battery has a service life of 5 years. The status can be checked with
two-tier battery monitoring. The information can be read from an I/O register and evaluated.
When the first warning level is reached, the remaining service life of the battery for buffering
CMOS data amounts to at least 1 month.
10.8
Active Management Technology (AMT)
AMT (Active Management Technology) is technology for the remote maintenance of
computers (simply called AMT-PC in the remainder of the document) and it includes the
following functions:
●
Keyboard–Video–Mouse (KVM) redirection: Using KVM that is integrated in the AMT
hardware you access the AMT PC remotely. With KVM, you can also control AMT PCs
that have no or a defective operating system. A KVM remote session is always possible
with the KVM server integrated in the firmware. This means you can restart the PC and
change the BIOS setup remotely.
●
Remote power management: AMT PCs can be turned on and off and restarted from
another PC.
●
SOL (Serial over LAN): Redirection of the data of a serial interface to the network. The
main use of the function is text-based remote control of an AMT PC using a console.
●
IDE redirection: An ISO file on the help desk PC can be mounted on the AMT PC and
used as a DVD drive.
An ISO file contains a memory image of the content of a CD or DVD structured in the ISO
9660 format.
●
Remote reboot: An AMT PC can be booted from a bootable ISO file made available by
another PC.
