Glossary - Omron SYSMAC CV500-BSC11 Operation Manual

active controller
address
address command
advanced instruction
allocation
alphanumeric character
analog
Analog I/O Unit
AND
area
area prefix
argument
arithmetic operator
array element
array subscript
array variable
ASCII

Glossary

The device on a general-purpose interface bus that is currently controlling com-
munications on the bus.
A number used to identify the location of data or programming instructions in
memory or to identify the location of a network or a unit in a network.
A command sent to a specific address on a general-purpose interface bus.
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.
The process by which the PC assigns certain bits or words in memory for various
functions. This includes pairing I/O bits to I/O points on Units.
An upper- or lower-case letter, digit, or underscore (_). The underscore is con-
sidered to be a letter.
Something that represents or can process a continuous range of values as op-
posed to values that can be represented in distinct increments. Something that
represents or can process values represented in distinct increments is called
digital.
I/O Units that convert I/O between analog and digital values. An Analog Input
Unit converts an analog input to a digital value for processing by the PC. An Ana-
log Output Unit converts a digital value to an analog output.
A logic operation whereby the result is true if and only if both premises are true.
In ladder-diagram programming the premises are usually ON/OFF states of bits
or the logical combination of such states called execution conditions.
See data area and memory area.
A one or two letter prefix used to identify a memory area in the PC. All memory
areas except the CIO area require prefixes to identify addresses in them.
A value passed to a function when the function is called.
A character indicating to the BASIC Unit that it should perform some sort of cal-
culation; for instance, "+" indicates addition, and "*" indicates multiplication.
One part of an array variable. An array element can be another array (for mul-
ti-dimensional arrays) or a simple variable (an integer, floating-point, string, etc.)
An integer expression used to designate an array element for some operation.
A variable which consists of a collection of parts called array elements. Each ele-
ment can be another array (for multi-dimensional arrays) or a simple variable (an
integer, floating-point, string, etc.)
Short for American Standard Code for Information Interchange. ASCII is used to
code characters for output to printers and other external devices.
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