Omron SYSMAC C500 Installation Manual page 108

host computer
IBM PC/XT or AT,
or compatibles
I/O Expansion Backplane
I/O Control Unit
I/O devices
I/O Expansion Rack
I/O Interface Unit
I/O point
I/O Unit
PC
PC Link Unit
Position Control Unit
Power Supply
Programmable Controller
PROM
PROM Writer
Rack
104
Glossary
A computer that is used to transfer data to or receive data from a PC in a
Host Link system. The host computer is used for data management and
overall system control. Host computers are generally small personal or
business computers.
A computer that has similar architecture to, and is logically compatible with
an IBM PC/XT computer; and that can run software designed for that
computer.
A Backplane used to create an Expansion I/O Rack.
A Unit mounted to the CPU Rack in certain PCs to monitor and control I/O
points on Expansion I/O Units.
The devices which are connected to the terminals on I/O Units, Special I/O
Units, or Intelligent I/O Units. I/O devices may be part of the Control System if
they function to help control other devices, or they may be part of the
controlled system if they interact directly with it.
Part of a Rack PC, an Expansion I/O Rack is connected to a CPU Rack to
increase the number of slots available for mounting Units.
A Unit mounted to an Expansion I/O Rack in certain PCs to interface the
Expansion I/O Rack to the CPU Rack. An I/O Interface Unit is needed when
the first Expansion I/O Rack is connected to the CPU Rack via a Connecting
Cable. Each Expansion I/O Rack needs an I/O Interface Unit.
The place at which an input signal enters the PC System or an output signal
leaves the PC System. In physical terms, an I/O point corresponds to
terminals or connector pins on a Unit; in terms of programming, an I/O point
corresponds to an I/O bit in the IR area.
The most basic type of Unit mounted to a Backplane. I/O Units include Input
Units and Output Units, each of which is available in a range of
specifications. I/O Units do not include Special I/O Units, Link Units, etc.
An acronym for Programmable Controller.
A Unit used to connect two or more PCs together so that they can exchange
data through their LR areas.
A Special I/O Unit used to control the operation of positioning devices such
as Servomotors.
A Unit that mounts to a Backplane in a Rack PC. It provides power at the
voltage required by the other Units on the Rack.
A small, computer-like device that can control peripheral equipment, such as
an electric door or quality control devices, based on programming and
peripheral input devices. Any process that can be controlled using electrical
signals can be controlled by a PC. PCs can be used independently or
networked together into a system to control more complex operations.
[P(rogrammable) R(ead) O(nly) M(emory)] A type of ROM into which the
program or data may be written after manufacture, by a customer, but which
is fixed from that time on.
A PROM Writer is a device used to write data to ROM, PROM, and EPROM
storage chips.
An assembly that forms a functional unit in a Rack PC System. A Rack
consists of a Backplane and the Units mounted to it. These Units include the
Power Supply, CPU, and I/O Units. Racks include CPU Racks, Expansion I/O
Racks, and I/O Racks. The CPU Rack is the Rack with the CPU mounted to
it. An Expansion I/O Rack is an additional Rack that holds extra I/O Units. An
I/O Rack is used in the C2000H Duplex System, because there is no room
for any I/O Units on the CPU Rack in this System.