Glossary-6
Box PC 820 / PC FI45 V2, Manual
A5E00051531-03
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
Interface
S An interface is the connection between individual hardware elements such as
PLCs, programming devices, printers or monitors via physical connections
(cables).
S An interface is also the connection between different programs, to enable them
to work together.
Interface Module
Module used to connect the hardware I/O.
Interrupt
The interruption of program processing in the processor of a programmable
controller by an interrupt event.
IRQ
Interrupt Request
ISA
Industrial Standard Architecture (bus for expansion module)
Glossaryx
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