Omron SYSMAC C200HS Operation Manual page 489

Remote I/O Unit
remote I/O word
reset
return
reversible counter
reversible shift register
right-hand instruction
rightmost (bit/word)
rotate register
RUN mode
scheduled interrupt
self diagnosis
self-maintaining bit
servicing
set
set value
shift register
Slave
Slave Rack
Glossary
Any of the Units in a Remote I/O System. Remote I/O Units include Masters,
Slaves, Optical I/O Units, I/O Link Units, and Remote Terminals.
An I/O word allocated to a Unit in a Remote I/O System.
The process of turning a bit or signal OFF or of changing the present value of a
timer or counter to its set value or to zero.
The process by which instruction execution shifts from a subroutine back to the
main program (usually the point from which the subroutine was called).
A counter that can be both incremented and decremented depending on the
specified conditions.
A shift register that can shift data in either direction depending on the specified
conditions.
Another term for terminal instruction.
The lowest numbered bits of a group of bits, generally of an entire word, or the
lowest numbered words of a group of words. These bits/words are often called
least-significant bits/words.
A shift register in which the data moved out from one end is placed back into the
shift register at the other end.
The operating mode used by the PC for normal control operations.
An interrupt that is automatically generated by the system at a specific time or
program location specified by the operator. Scheduled interrupts result in the ex-
ecution of specific subroutines that can be used for instructions that must be ex-
ecuted repeatedly for a specified period of time.
A process whereby the system checks its own operation and generates a warn-
ing or error if an abnormality is discovered.
A bit that is programmed to maintain either an OFF or ON status until set or reset
by specified conditions.
The process whereby the PC provides data to or receives data from external de-
vices or remote I/O Units, or otherwise handles data transactions for Link Sys-
tems.
The process of turning a bit or signal ON.
The value from which a decrementing counter starts counting down or to which
an incrementing counter counts up (i.e., the maximum count), or the time from
which or for which a timer starts timing. Set value is abbreviated SV.
One or more words in which data is shifted a specified number of units to the right
or left in bit, digit, or word units. In a rotate register, data shifted out one end is
shifted back into the other end. In other shift registers, new data (either specified
data, zero(s) or one(s)) is shifted into one end and the data shifted out at the oth-
er end is lost.
Short for Remote I/O Slave Unit.
A Rack containing a Remote I/O Slave Unit and controlled through a Remote I/O
Master Unit. Slave Racks are generally located away from the CPU Rack.
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