Siemens SENTRON 7KN POWERCENTER 3000 Manual page 141

Power management
The power management of a modern PC is able to control the power consumption of the
most important components of the computer (e.g. screen, hard disk, and CPU) individually by
restricting their activity depending on the current load of the system or the component. The
power management in laptop computers is especially important.
Power options
With power options, you can lower the energy consumption of the computer and still keep
the computer ready for immediate use. Can be customized in Windows under Settings >
Control Panel > Power Options.
Programmable controller
The programmable controllers of the SIMATIC S7 system comprise a central controller, one or
more CPUs and other modules (e.g. input/output modules).
PXE server
A Preboot Execution Environment-Server is part of the network environment and can supply
software to connected computers before they boot. This software is, for example, operating
system installations or maintenance tools.
RAL
Restricted Access Location: Installation of the device in an operating location with limited
access, e.g. lockable control cabinet.
Reset
Hardware reset: Reset/restart of the 7KN Powercenter 3000 using the pushbutton/switch.
Restart
Restart of a computer already in operation that is done without switching off the power
supply.
Restore function of the USB flashdrive
The restore function is used to reset your system partition or the entire hard disk to the as-
delivered condition in case of an error. The USB flashdrive contains the image files required to
do this and is bootable.
ROM memory
Read Only Memory. The ROM memory is a read-only memory in which each memory cell can
be individually addressed. The stored programs or data are hard-programmed and are
retained even through a power failure.
7KN POWERCENTER 3000
Equipment Manual, 07/2020, L1V30579222003-03
Glossary
139