Siemens SIMATIC PG 720 P Manual page 115

F
File
A file is the collection of data under one name.
Formatting Formatting divides the memory area on a magnetic data medium into tracks
and sectors. Formatting deletes all the data on a data medium. Every data
medium must be formatted before it is used for the first time.
Function Keys
Function keys can be divided into two different types; the normal function
keys which are assigned a particular function of the computer (for example,
delete key), and programmable function keys (softkeys).
H
Hard Copy The output of the complete contents of the screen on a printer is called a hard
copy.
Hard Disk Drive
Hard disk drives (Winchester drives) are a form of magnetic disk memory
where the magnetic disks are permanently built into the drive.
I
Industrial Ethernet Bus system based on the Ethernet standard. Components of the SIMATIC S5
and S7 series (programming devices, programmable logic controllers,
programmable control systems) can be networked using Industrial Ethernet
interface modules.
Interface
Interface Module
Module which controls and extends the hardware periphery.
Interrupt The interruption of program processing in the processor of a programmable
controller by an interrupt event.
PG 720 P Programming Device
C79000-G7076-C721-02
An interface is the connection between individual hardware elements
such as PLCs, programming devices, printers, or monitors via physical
connections (cables).
An interface is also the connection between different programs, to enable
them to work together.
Glossary
Glossary-5