Omron SYSMAC C200HS Operation Manual page 486

NOT
NSB
NSU
OFF
OFF delay
ON
ON delay
one-shot bit
on-line removal
operand
operand bit
operand word
operating error
Optical I/O Unit
Optical Slave Rack
OR
output
output bit
output device
486
Glossary
A logic operation which inverts the status of the operand. For example, AND
NOT indicates an AND operation with the opposite of the actual status of the op-
erand bit.
An acronym for Network Service Board.
An acronym for Network Service Unit.
The status of an input or output when a signal is said not to be present. The OFF
state is generally represented by a low voltage or by non-conductivity, but can be
defined as the opposite of either.
The delay between the time when a signal is switched OFF (e.g., by an input
device or PC) and the time when the signal reaches a state readable as an OFF
signal (i.e., as no signal) by a receiving party (e.g., output device or PC).
The status of an input or output when a signal is said to be present. The ON state
is generally represented by a high voltage or by conductivity, but can be defined
as the opposite of either.
The delay between the time when an ON signal is initiated (e.g., by an input de-
vice or PC) and the time when the signal reaches a state readable as an ON sig-
nal by a receiving party (e.g., output device or PC).
A bit that is turned ON or OFF for a specified interval of time which is longer than
one cycle.
Removing a Rack-mounted Unit for replacement or maintenance during PC op-
eration.
Bit(s) or word(s) designated as the data to be used for an instruction. An operand
can be input as a constant expressing the actual numeric value to be used or as
an address to express the location in memory of the data to be used.
A bit designated as an operand for an instruction.
A word designated as an operand for an instruction.
An error that occurs during actual PC operation as opposed to an initialization
error, which occurs before actual operations can begin.
A Unit that is connected in an Optical Remote I/O System to provide 8 I/O points.
Optical I/O Units are not mounted to a Rack.
A Slave Rack connected through an Optical Remote I/O Slave Unit.
A logic operation whereby the result is true if either of two premises is true, or if
both are true. In ladder-diagram programming the premises are usually ON/OFF
states of bits or the logical combination of such states called execution condi-
tions.
The signal sent from the PC to an external device. The term output is often used
abstractly or collectively to refer to outgoing signals.
A bit in the IR area that is allocated to hold the status to be sent to an output de-
vice.
An external device that receives signals from the PC System.