Omron CQM1H - PROGRAM Programming Manual page 586

logic block
logic block instruction
logic instruction
LR area
main program
mark trace
masked bit
masking
megabyte
memory area
message number
mnemonic code
MONITOR mode
most-significant (bit/word)
NC input
negative delay
nesting
NO input
noise interference
nonfatal error
normal condition
normally closed condition
normally open condition
Glossary
A group of instructions that is logically related in a ladder-diagram program and
that requires logic block instructions to relate it to other instructions or logic
blocks.
An instruction used to locally combine the execution condition resulting from a
logic block with a current execution condition. The current execution condition
could be the result of a single condition, or of another logic block. AND Load
and OR Load are the two logic block instructions.
Instructions used to logically combine the content of two words and output the
logical results to a specified result word. The logic instructions combine all the
same-numbered bits in the two words and output the result to the bit of the
same number in the specified result word.
A data area that is used in data links.
All of a program except for subroutine and interrupt programs.
A process in which changes in the contents of specific memory locations are
recorded during program execution.
A bit whose status has been temporarily made ineffective.
'Covering' an interrupt signal so that the interrupt is not effective until the mask
is removed.
A unit of storage equal to one million bytes.
Any of the areas in the PC used to hold data or programs.
A number assigned to a message generated with the MESSAGE instruction.
A form of a ladder-diagram program that consists of a sequential list of the in-
structions without using a ladder diagram.
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.
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.
A delay set for a data trace in which recording data begins before the trace sig-
nal by a specified amount.
Programming one loop within another loop, programming a call to a subroutine
within another subroutine, or programming one jump within another.
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.
See normally open condition.
A condition that produces an ON execution condition when the bit assigned to
it is OFF, and an OFF execution condition when the bit assigned to it is ON.
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.
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