Glossary-10
Box PC 820 / PC FI45 V2, Manual
A5E00051531-03
PCI
Peripheral Component Interconnect (fast expansion bus).
PCMCIA
(Personal Computer Memory Card International Association). Association of about
450 computer companies with the aim of setting worldwide standards for
miniaturizing PC expansion cards and making their use more flexible, offering the
market a basis for development. Cooperates with JEIDA.
PG
Programming device
PG Interface
The PG (programming device) interface is a serial port; it is located on a CPU, a
CP/IP, or a coordinator module (PG-MUX) and is used to connect a programming
device. Some CPUs may have two PG interfaces as an option.
PIC
SIMATIC programmable controller
Programmable Controller
The programmable logical controllers (PLC) of the SIMATIC systems (S5 or S7)
consist of a central controller, one or more CPUs, and various I/O modules.
Pull-Down Menu
See Drop-Down Menu
R
RAM
RAM (Random Access Memory) is a read/write memory in which every memory
location can be addressed individually and its contents changed. RAM is used to
store data and programs.
Glossaryx
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