Omron CPM1A Operation Manual page 193

self-maintaining bit
series
servicing
set
set value
shift input signal
shift register
signed binary
signed decimal
software error
software protect
source (word)
special instruction
SR area
SSS
store
subroutine
subroutine number
subtract count input
SV
switching capacity
synchronous execution
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Glossary
A bit that is programmed to maintain either an OFF or ON status until set or reset
by specified conditions.
A wiring method in which Units are wired consecutively in a string.
The process whereby the PC checks a connector or Unit to see if special proces-
sing is required.
The process of turning a bit or signal ON.
The value from which a decrementing counter starts counting down or to which
an incrementing counter counts up (i.e., the maximum count), or the time from
which or for which a timer starts timing. Set value is abbreviated SV.
An input signal whose OFF to ON transition causes data to be shifted one bit.
One or more words in which data is shifted a specified number of units to the right
or left in bit, digit, or word units. In a rotate register, data shifted out one end is
shifted back into the other end. In other shift registers, new data (either specified
data, zero(s) or one(s)) is shifted into one end and the data shifted out at the
other end is lost.
A binary value that is stored in memory along with a bit that indicates whether the
value is positive or negative.
One-word signed hexadecimal values stored in the two's complement format
can be displayed at the Programming Console as decimal values from –32,768
to 32,767.
An error that originates in a software program.
A means of protecting data from being changed that uses software as opposed
to a physical switch or other hardware setting.
The location from which data is taken for use in an instruction, as opposed to the
location to which the result of an instruction is to be written. The latter is called
the destination.
An instruction input with a function code that handles data processing opera-
tions within ladder diagrams, as opposed to a basic instruction, which makes up
the fundamental portion of a ladder diagram.
A memory area containing flags and other bits/words with specific functions.
See SYSMAC Support Software.
The process of recording a program written into a display buffer permanently in
memory.
A group of instructions placed separate from the main program and executed
only when called from the main program or activated by an interrupt.
A definer used to identify the subroutine that a subroutine call or interrupt acti-
vates.
An input signal used to decrement a counter when the signal changes from OFF
to ON.
See set value.
The maximum voltage/current that a relay can safely switch on and off.
Execution of programs and servicing operations in which program execution
and servicing are synchronized so that all servicing operations are executed
each time the programs are executed.