Glossary
SIMATIC HMI IPC677C
Operating Instructions, 04/2013, A5E02722710-04
275
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 graphic 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.
PROFIBUS/MPI
Process Field Bus (standard bus system for process applications)
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 (PLC)
The programmable logical controllers (PLC) of the SIMATIC S5 system consist of a central
controller, one or more CPUs, and various other modules (e.g. 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.
RAID
Redundant Array of Independent Disks: Data storage system which is used to store data
along with the error correction codes (e.g. parity bits) on at least two hard disks, in order to
increase system reliability and performance. The hard disk array is controlled by
management programs and a hard disk controller for error correction. The RAID system is
usually implemented in network servers.
Recovery DVD
Contains the tools for setting up the hard disks and the Windows operating system.
