Omron SYSMAC C200H, Руководство по эксплуатации

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Glossary
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Master Short for Remote I/O Master Unit.
memory area Any of the areas in the PC used to hold data or programs.
mnemonic code A form of a ladder-diagram program that consists of a sequential list of the
instructions without using a ladder diagram. Mnemonic code is required to
input a program into a PC when using a Programming Console.
MONITOR mode A mode of PC operation in which normal program execution is possible, and
which allows modification of data held in memory. Used for monitoring or de-
bugging the PC.
most-significant (bit/word) See leftmost (bit/word).
NC input An input that is normally closed, i.e., the input signal is considered to be
present when the circuit connected to the input opens.
nest Programming one loop within another loop, programming a call to a subrou-
tine within another subroutine, or programming an IF-ELSE programming
section within another IF-ELSE section.
Net Link System An optical LAN formed from PCs connected through Net Link Units. A Net
Link System also normally contains nodes interfacing computers and other
peripheral devices. PCs in the Net Link System can pass data back and forth,
receive commands from any interfaced computer, and share any interfaced
peripheral device.
Net Link Unit The Unit used to connect PCs to a Net Link System. The full name is “SYS-
MAC Net Link Unit.”
Network Service Board A device with an interface to connect devices other than PCs to a Net Link
System.
Network Service Unit A Unit that provides two interfaces to connect peripheral devices to a Net
Link System.
node One of the positions in a LAN. Each node incorporates a device that can
communicate with the devices at all of the other nodes. The device at a node
is identified by the node number. One loop of a Net Link System (OMRON’s
LAN) can consist of up to 126 nodes. Each node is occupied by a Net Link
Unit mounted to a PC or a device providing an interface to a computer or
other peripheral device.
NO input An input that is normally open, i.e., the input signal is considered to be pres-
ent when the circuit connected to the input closes.
noise interference Disturbances in signals caused by electrical noise.
nonfatal error A hardware or software error that produces a warning but does not stop the
PC from operating.
normal condition A condition that produces an ON execution condition when the bit assigned
to it is ON, and an OFF execution condition when the bit assigned to it is
OFF.