Extended device functions
5.4 Buffer memory MRAM
SIMATIC IPC427D
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Operating Instructions, 05/2017, A5E31347215-AB
5.4
Buffer memory MRAM
The motherboard is equipped with an MRAM 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 MRAM.
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 in BIOS to enable the use of MRAM in WinAC
RTX.
5.5
Operation without monitor and keyboard
The device can be operated without a monitor and keyboard. The device startup is
guaranteed without these peripherals. A USB keyboard and mouse and an analog CRT
monitor can be later connected for diagnostics.
A digital DVI monitor or DisplayPort monitor cannot be activated retrospectively unless the
Windows Embedded Standard or Windows 7 Ultimate operating system has completed
booting.
5.6
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 operating system 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.
