Omron C200HE-CPU -Z Series, Руководство по установке

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Glossary
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I/O devices The devices which are connected to the terminals on I/O Units, Special I/O Units,
or Intelligent I/O Units. I/O devices may be part of the Control System if they
function to help control other devices, or they may be part of the controlled sys-
tem if they interact directly with it.
I/O point The place at which an input signal enters the PC System or an output signal
leaves the PC System. In physical terms, an I/O point corresponds to terminals
or connector pins on a Unit; in terms of programming, an I/O point corresponds
to an I/O bit in the IR area.
I/O table Diagram written to the IR memory area listing the type of I/O units controlled by a
PC. It must be cleared before programming or when I/O units are changed.
Tables can be read, verified, or transferred to a EPROM.
I/O Unit The most basic type of Unit mounted to a Backplane. I/O Units include Input
Units and Output Units, each of which is available in a range of specifications.
I/O Units do not include Special I/O Units, Link Units, etc.
Limit Switch A switch that detects when an object has reached the limit of its movement by
actually making contact with the object. Limit Switches are fitted to electric ele-
vators, traveling cranes, etc. to indicate when a certain part of the equipment has
traveled to the specified limit.
Link Unit Any of the Units used to connect a PC to a Link System. These are Remote I/O
Units, I/O Link Units, PC Link Units, Host Link Units, and Net Link Units.
operating mode The Display Terminal Unit can operate in five different modes: Page Read, Ter-
minal. Dynamic Scan, Read/Write, and Self-Diagnosis.
page One complete Display Terminal Unit screen. Two hundred screens can be
stored on one RAM card.
parallel interface The parallel interface uses the RS-232 connector, but is not serial communica-
tion. When parallel mode is selected as the communication mode, up to 16 Dis-
play Terminal Units can be connected to a PC in parallel.
PC An acronym for Programmable Controller.
PCB An acronym for printed circuit board.
PC Link Unit A Unit used to connect two or more PCs together so that they can exchange data
through their LR areas.
Photoelectric Switch A switch that uses light to detect the presence of an object.
Power Supply A Unit that mounts to a Backplane in a Rack PC. It provides power at the voltage
required by the other Units on the Rack.
printed circuit board A board onto which electrical circuits are printed for mounting into a computer or
electrical device.
Programmable Controller A small, computer-like device that can control peripheral equipment, such as an
electric door or quality control devices, based on programming and peripheral
input devices. Any process that can be controlled using electrical signals can be
controlled by a PC. PCs can be used independently or networked together into a
system to control more complex operations.
programming device A peripheral device used to write programs and to input a program to a PC or to
alter or monitor a program already stored in the PC. There are dedicated pro-