Omron SYSMAC C1000H, Руководство по эксплуатации

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Glossary
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transfer The process of moving data from one location to another within the PC, or
between the PC and external devices. When data is transferred, generally a
copy of the data is sent to the destination, i.e., the content of the source of
the transfer is not changed.
trigger address An address in the program that defines the beginning point for tracing. The
actual beginning point can be altered from the trigger by defining either a
positive or negative delay.
UM area The memory area used to hold the active program, i.e., the program that is
being currently executed.
Unit 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.
unit number A number assigned to some Link Units and Special I/O Units to facilitate
identification when assigning words or other operating parameters to it.
watchdog timer A timer within the system that ensures that the cycle time stays within speci-
fied limits. When limits are reached, either warnings are given or PC opera-
tion is stopped depending on the particular limit that is reached.
Wired Slave Rack A Slave Rack connected through a Wired Remote I/O Slave Unit.
word A unit of data storage in memory that consists of 16 bits. All data areas con-
sists of words. Some data areas can be accessed only by words; others, by
either words or bits.
word address The location in memory where a word of data is stored. A word address must
specify (sometimes by default) the data area and the number of the word that
is being addressed.
word multiplier A value between 0 and 3 that is assigned to a Master in a Remote I/O Sys-
tem so that words can be allocated to non-Rack-mounting Units within the
System. The word setting made on the Unit is added to 32 times the word
multiplier to arrive at the actual word to be allocated.
work bit A bit in a work word.
work word A word that can be used for data calculation or other manipulation in pro-
gramming, i.e., a ‘work space’ in memory. A large portion of the IR area is
always reserved for work words. Parts of other areas not required for special
purposes may also be used as work words, e.g., LR words not used in a PC
Link or SYSMAC NET Link System.