Operating instructions

Glossary
SIMATIC IPC627C
202 Operating Instructions, 11/2010, A5E02669068-02
PC/104 / PC/104-Plus
Two bus architectures are especially fashionable today in the industrial world. PC/104 and
PC/104-
Plus . Both are standard in single-board computers of the PC class. The electrical
and logical layout of the two bus systems is identical with ISA (PC/104) and PCI (PC/104-
Plus ). Software cannot usually detect a difference between them and normal desktop bus
systems. Their advantage is the compact design and the resulting space they save.
PCMCIA
Association consisting of approx. 450 member companies of the computer industry whose
focus is set on providing worldwide standards for miniaturization and flexible use of PC
expansion cards in order to provide basic technologies to the market.
PEG interface
PCI Express for Graphics. Graphics interface with 16 PCIe lanes for expansions with
graphics modules.
PIC mode
Peripheral interrupt controller. 15 interrupt lines are available.
Pixel
PixElement (picture point). 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.
PROFIBUS/MPI
Process Field Bus (standard bus system for process applications)