Siemens SIMATIC IPC227G Operating Instructions Manual page 110

Glossary
Motherboard
The motherboard is the core of the computer. Here, data are processed and stored, and
interfaces and device I/Os are controlled and managed.
Operating system
Generic term which describes all functions for controlling and monitoring user program
execution, distribution of system resources to the user programs and the operating mode in
cooperation with the hardware (for example, Windows 7 Ultimate).
PCIe
PCI-Express (Peripheral Component Interconnect Express) is an extension standard for
connection of I/O devices with the chipset of a main processor. PCIe is the successor of PCI,
PCI-X and AGP and offers a higher data transmission rate in comparison to its predecessors.
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.
PROFINET
PROFINET is the name of the standard for Industrial Ethernet developed and maintained by
the PROFIBUS user organization. PROFINET unites protocols and specifications with which
Industrial Ethernet meets the requirements of industrial automation technology.
Programmable controller
The programmable controllers of the SIMATIC S7 system consist of a central controller, one or
more CPUs, and various other modules (e.g. I/O modules).
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Operating Instructions, 07/2022, A5E50059933-AC
SIMATIC IPC227G