Omron CV500 Installation Manual page 165

constant
control bit
control signal
Control System
controlled system
Converting Link Adapter
CPU
CPU Backplane
CPU Bus Unit
CPU Rack
crystal optical fiber cable
C-series PC
CV Support Software
CV-series PC
CVSS
cycle
cycle time
data area
data link
data register
Glossary
An input for an operand in which the actual numeric value is specified. Constants
can be input for certain operands in place of memory area addresses. Some op-
erands must be input as constants.
A bit in a memory area that is set either through the program or via a Program-
ming Device to achieve a specific purpose, e.g., a Restart Bit is turned ON and
OFF to restart a Unit.
A signal sent from the PC to effect the operation of the controlled system.
All of the hardware and software components used to control other devices. A
Control System includes the PC System, the PC programs, and all I/O devices
that are used to control or obtain feedback from the controlled system.
The devices that are being controlled by a PC System.
A Link Adapter used to convert between different types of optical fiber cable, dif-
ferent types of wire cable, or between optical fiber cable and wire cable. Such
conversion is necessary to connect Units that use different forms of communica-
tion.
See central processing unit .
A Backplane used to create a CPU Rack.
A special Unit used with CV-series PCs that mounts to the CPU bus. This con-
nection to the CPU bus enables special data links, data transfers, and process-
ing.
The main Rack in a building-block PC, the CPU Rack contains the CPU, a Power
Supply, and other Units. The CPU Rack, along with the Expansion CPU Rack,
provides both an I/O bus and a CPU bus.
See AGF.
Any of the following PCs: C2000H, C1000H, C500, C200H, C40H, C28H, C20H,
C60K, C60P, C40K, C40P, C28K, C28P, C20K, C20P, C120, or C20.
A programming package run on an IBM PC/AT or compatible to serve as a Pro-
gramming Device for CV-series PCs.
Any of the following PCs: CV500, CV1000, CV2000, or CVM1
See CV Support Software .
One unit of processing performed by the CPU, including SFC/ladder program
execution, peripheral servicing, I/O refreshing, etc. The cycle is called the scan
with C-series PCs.
The time required to complete one cycle of CPU processing.
An area in the PC's memory that is designed to hold a specific type of data.
An automatic data transmission operation that allows PCs or Units within PC to
pass data back and forth via common data areas.
A storage location in memory used to hold data. In CV-series PCs, data registers
are used with or without index registers to hold data used in indirect addressing.
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