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slot
Special I/O Unit
switching capacity
system configuration
transmission distance
Unit
unit number
wire communications
Wired Slave Rack
work word
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Glossary
A position on a Rack (Backplane) to which a Unit can be mounted.
A dedicated Unit that is designed for a specific purpose. Special I/O Units
include Position Control Units, High-Speed Counter Units, Analog I/O Units,
etc.
The voltage/current that a relay can switch on and off.
The arrangement in which Units in a System are connected.
The distance that a signal can be transmitted.
In OMRON PC terminology, the word Unit is capitalized to indicate any prod-
uct sold for a PC System. Though most of the names of these products end
with the word Unit, not all do, e.g., a Remote Terminal is referred to in a col-
lective sense as a Unit. Context generally makes any limitations of this word
clear.
A number assigned to some Link Units and Special I/O Units to assign words
and sometimes other operating parameters to it.
A communications method in which signals are sent over wire cable. Al-
though noise resistance and transmission distance can sometimes be a
problem with wire communications, they are still the cheapest and the most
common, and perfectly adequate for many applications.
A Slave Rack connected through a Wired Remote I/O Slave Unit.
A word that can be used for data calculation or other manipulation in pro-
gramming, e.g., LR words not used in a PC Link or Net Link System.
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