Siemens SIMATIC IPC477E PRO Operating Instructions Manual page 172

Glossary
Pixel
The pixel represents the smallest element that can be reproduced on-screen or on a printer.
Plug&Play
Generally, a reference to the ability of a computer to automatically configure the system for
communication with peripheral devices (for example monitors, modems or printers). The
user can plug in a peripheral and "play" it at once without manually configuring the system. A
Plug&Play PC requires both a BIOS that supports Plug&Play and a Plug&Play expansion
card.
POST
Self-test performed by the BIOS after the computer is switched on. Performs a RAM test and
a graphics controller test, for example. The system outputs audible signals (beep codes) if
the BIOS detects any errors; the relevant message indicating cause of error is output on the
screen.
Programmable controller
The programmable controllers of the SIMATIC S5 system consist of a central controller, one
or several CPUs and various other modules (for example, I/O modules).
PXE server
A Preboot Execution Environment server is part of a network environment and can provide
software to connected computers even before they boot. This can involve operating system
installations or servicing tools, for example.
RAL
Restricted Access Location: Installation of the device in a production facility with restricted
access, for example, a locked control cabinet.
Recovery function of the USB stick
Contains the tools for configuring hard disks and the Windows operating system.
Reset
Hardware reset: Reset/restart of the PC using a button/switch.
Restart
Warm restart of a computer without switching the power off (Ctrl + Alt + Del)
172
SIMATIC IPC477E PRO
Operating Instructions, 08/2017, A5E39912462-AA