Operating the device and device functions
5.5 Extended device functions
SIMATIC IPC477E
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Operating Instructions, 11/2020, A5E37455003-AF
5.5.5
Buffer memory NVRAM
Depending on the configuration you ordered, the motherboard is equipped with a non-
volatile memory (NVRAM) that applications can use to back up data in the event of a power
failure. Failure of the supply voltage for a duration longer than 5 ms is indicated by the DC
FAIL signal.
Depending on the system utilization, up to 512 KB can be saved in the NVRAM.
A memory window with a maximum size of 512 KB can be displayed by means of PCI address
register. The base address is initialized by the BIOS.
A corresponding function is implemented there for using the NVRAM under WinAC RTX and
for using the CPU150xS SW controller.
5.5.6
Trusted Platform Modul (TPM)
Depending on the ordered configuration, the motherboard contains a Trusted Platform
Module (TPM). A TPM is a chip that adds important security functions to your device, such as
enhanced protection of the PC against unauthorized manipulation by third parties. The
current operating systems, for example, Windows 7 or Windows 10, support these security
functions.
NOTICE
Import restrictions
TPM technology is subject to legal restrictions in some regions and may not be used there.
You could commit a crime by importing or exporting the device in certain countries.
Note the respective import provisions for the TPM module.
Activating the Trusted Platform Module
The TPM can be activated under "Security" in the BIOS setup. Please follow the instructions in
the BIOS setup.
