Omron CS1W-SLK11-21 - 06-2004 Manual page 188

most-significant (bit/word)
nesting
Network Service Board
Network Service Unit
network support table
node
node number
noise interference
nonfatal error
NOT
NSB
NSU
octal
odd parity
OFF
OFF delay
offset
ON
ON delay
Glossary
See leftmost (bit/word).
Programming one loop within another loop, programming a call to a subroutine
within another subroutine, or programming an IF–ELSE programming section
within another IF–ELSE section.
A device with an interface to connect devices other than PLCs to a SYSMAC
NET Link System.
A Unit that provides two interfaces to connect peripheral devices to a SYSMAC
NET Link System.
Tables of settings used to establish operating parameters for SYSMAC LINK
and SYSMAC NET Link Systems.
One of the positions in a LAN. Each node incorporates a device that can com-
municate with the devices at all of the other nodes. The device at a node is
identified by the node number.
A number used to identify a node on a network. The node number of a CV-se-
ries PLC is called the "unit number" in the PLC Setup.
Disturbances in signals caused by electrical noise.
A hardware or software error that produces a warning but does not stop the
PLC from operating.
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.
An acronym for Network Service Board.
An acronym for Network Service Unit.
A number system where all numbers are expressed in base 8, i.e., numbers
are written using only numerals 0 through 7.
A communications setting that adjusts the number of ON bits so that it is al-
ways odd. See parity.
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 PLC) 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 PLC).
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 PLC) and the time when the signal reaches a state readable as an
ON signal by a receiving party (e.g., output device or PLC).
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