Справочник Пользователя для Siemens 620

Glossary-11

SIMATIC Box PC 620  Manual

A5E00131465-01

Liquid Crystal Display. Display type on the base of liquid crystals with a thin film

polarized molecular structure, enclosed  between two transparent electrodes.

Light Emitting Diode (for example, status display). Semiconductor diode that

transforms electrical energy into light.

The device is switched off by closing the display lid.

The LPT1 port (Centronics port) is a parallel interface that can be used to connect

a printer.

Floppy disk drive that is capable of storing 240 MB of data on a single 3.5-inch

floppy disk. LS-240 drives are also compatible with other floppy disk formats.

Main memory is a RAM memory in the CPU that is accessed by the CPU during

user program processing.

Memory Cards in credit card format. memory for user programs and parameters,

for example, for programmable modules and CPs.

New and very compact card for SIMATIC.

See Extended Memory