Siemens SIMATIC Box PC 840, Руководство пользователя

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Glossary
Glossary-14
SIMATIC Rack PC 840 Manual
A5E00104826-03
PC Card
Trademark of the Personal Computer Memory Card International Association
(PCMCIA). Designation for auxiliary cards that conform with PCMCIA
specifications. The PC Card that has roughly the size of a credit card can be
plugged into a PCMCIA slot. Version 1 specifies cards of Type I with a thickness of
3.3 millimeters, which is conceived mainly for use as external memory. Version 2 of
the PCMCIA specification also defines a card Type II with thickness of 5 mm and a
card of the Type III with a thickness of 10.5 mm. Type II cards can realize devices
such as modems, fax and network interface cards. Type III cards are equipped
with devices that require more space, for example wireless communication
modules or rotary storage media (hard disk drives, for example).
PCI
P eripheral C omponent I nterconnect (high-speed I/O 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. See Cardbus interface.
PG
Compact programming device especially for industrial applications. The PG is fully
equipped for programming SIMATIC PLCs.
PG LINK
Serial interface on a CPU, CP/IP module and coordination module (PG-MUX).
Used to connect a programming device. Some CPUs are optionally equipped with
two PG links.
Pixel
Pix El ement (picture point). The pixel represents the smallest element that can be
reproduced on-screen or on a printer.
PIC
SIMATIC S5 programmable logic controller