Omron C200HX Operation Manual page 569

LR area
main program
masking
Master
memory area
mnemonic code
MONITOR mode
most-significant (bit/word)
NC input
nest
Net Link System
Net Link Unit
Network Service Board
Network Service Unit
node
NO input
noise interference
nonfatal error
Glossary
A data area that is used in a PC Link System so that data can be transferred be-
tween two or more PCs. If a PC Link System is not used, the LR area is available
for use as work bits.
All of a program except for the subroutines.
'Covering' an interrupt signal so that the interrupt is not effective until the mask is
removed.
Short for Remote I/O Master Unit.
Any of the areas in the PC used to hold data or programs.
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.
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 debug-
ging the PC.
See leftmost (bit/word).
An input that is normally closed, i.e., the input signal is considered to be present
when the circuit connected to the input opens.
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.
An optical LAN formed from PCs connected through Net Link Units. A Net Link
System also normally contains nodes interfacing computers and other peripher-
al 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.
The Unit used to connect PCs to a Net Link System. The full name is "SYSMAC
Net Link Unit."
A device with an interface to connect devices other than PCs to a Net Link Sys-
tem.
A Unit that provides two interfaces to connect peripheral devices to a Net Link
System.
One of the positions in a LAN. Each node incorporates a device that can commu-
nicate 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.
An input that is normally open, i.e., the input signal is considered to be present
when the circuit connected to the input closes.
Disturbances in signals caused by electrical noise.
A hardware or software error that produces a warning but does not stop the PC
from operating.
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