Omron CQM1H - PROGRAM Programming Manual page 587

NOT
OFF
OFF delay
offset
ON
ON delay
one-shot bit
one-to-one link
online edit
operand
operand bit
operand word
operating modes
operating error
OR
output
output bit
output device
output point
output signal
overflow
562
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
operand bit.
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).
A positive or negative value added to a base value such as an address to spec-
ify a desired value.
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
device or PC) and the time when the signal reaches a state readable as an ON
signal 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 scan.
See 1:1 link.
The process of changing the program directly in the PC from a Programming
Device. Online editing is possible in PROGRAM or MONITOR mode. In MON-
ITOR mode, the program can actually be changed while it is being executed.
The values 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.
One of three PC modes: PROGRAM mode, MONITOR mode, and RUN mode.
An error that occurs during actual PC operation as opposed to an initialization
error, which occurs before actual operations can begin.
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
conditions.
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
device.
An external device that receives signals from the PC System.
The point at which an output leaves the PC System. Output points correspond
physically to terminals or connector pins.
A signal being sent to an external device. Generally an output signal is said to
exist when, for example, a connection point goes from low to high voltage or
from a nonconductive to a conductive state.
The state where the capacity of a data storage location has been exceeded.