| 2-wide power/controller carrier
|
Assembly that provides power and
communications connections for the DeltaV Controller and the DeltaV System
Power Supply.
|
| 4-wide I/O interface carrier
|
Assembly that provides power and
communication connections for the DeltaV I/O Interface with 4 I/O card slots.
|
| 8-wide I/O interface carrier
|
Assembly that provides power and
communication connections for the DeltaV I/O Interface with 8 I/O card slots.
|
| 10BaseT
|
IEEE standard for a 10-Megabit per second
(Mbps) baseband network on twisted-pair wiring.
|
| American Wire Gauge (AWG)
|
Usual system of wire size measurement in the
United States. A 14 AWG wire has a cross-sectional area of 2.08 mm; a 000 AWG
wire has a cross-sectional area of 85.02 mm. Note that the smaller the AWG
value, the larger the wire.
|
| Bit
|
Electrical equivalent of a 0 or a 1 that
represents the basic unit of computer communication.
|
| CD-ROM
|
Compact disk used as a computer information
storage medium. CD-ROMs can store a large amount of information.
|
| Central processing unit (CPU)
|
Portion of a computer that manipulates and
modifies data and carries out software instructions.
|
| Control Network
|
Communications network for the DeltaV
system.
|
| Daisy chain
|
To connect one device to another in
sequence.
|
| Deutsche Institute für Normung (DIN)
|
The German standards organization.
|
| Device
|
Piece of electronic hardware that performs
one or more prescribed functions.
|
| Diagnostics
|
One or more programs in a computer or
microprocessor that can detect and pinpoint a hardware fault or a configuration
error.
|
| Ethernet
|
Local area network (LAN) specification that
uses baseband signaling at 10 Megabits per second (Mbps).
|
| Federal Communications Commission (FCC)
|
A United States government communications
standards group.
|
| Fiber-optic cable
|
Thin, transparent fibers of glass or plastic
that transmit data through pulses of light from a laser or light-emitting diode
(LED).
|
| Hub
|
Device in a network that consolidates wiring
connections and routes communications. All communications devices on a
hub-based network connect to one or more hubs.
|
| Institute of Electrical and Electronic
Engineers (IEEE)
|
Independent technical organization that
defines standards for the electrical, electronic, and computer industries.
|
| IEEE 802.3
|
Set of specifications from the Institute of
Electrical and Electronic Engineers (IEEE) for local area networks (LANs). This
specification provides standards for media access control.
|
| Input/Output (I/O)
|
Signal reception and transmission or signal
interfacing. Input, for an instrument, involves accepting and processing
signals from field devices. Output, for an instrument, involves converting
commands into electrical signals to field devices.
|
| International Standards Organization (ISO)
|
International organization that defines
manufacturing standards.
|
| Instrument Society of America (ISA)
|
Independent organization that defines
instrumentation standards.
|
| Intrinsically Safe field circuits
|
Circuits that are designed to limit the
amount of energy provided to field devices to levels below those that are
required to ignite specific types of hazardous materials under fault and no
fault conditions.
|
| Intrinsically Safe I/O
|
Equipment that contains intrinsically safe
field circuits.
|
| Light-emitting diode (LED)
|
Electronic component that generates a small
focused beam of light in response to a current passing through the component.
|
| Local Area Network (LAN)
|
Communications network within a limited
physical area that provide high-speed data transmission.
|
| LocalBus
|
A DeltaV Power/Controller Carrier, its
associated DeltaV I/O Interface Carriers, and the cables that connect them.
|
| Megabit (Mb)
|
One million binary bits.
|
| Military standard (MIL)
|
Standard requirements as set by United
States military organizations.
|
| Node
|
Communication device, such as a workstation
or controller, attached to the Control Network.
|
| Object linking and embedding (OLE)
|
Software standard governing the relationship
between software document files.
|
| OLE for Process Control (OPC)
|
Software standard for OLE applications in
process control.
|
| Operating range
|
A sensor type's input signal range over
which the accuracy is stated.
|
| Port
|
Physical connection between an electronic
device and a cable.
|
| Random-access memory (RAM)
|
Type of semiconductor memory. The user can
read from and write to RAM as often as desired.
|
| Read-only memory (ROM)
|
Type of semiconductor memory. Information is
stored permanently on ROM; the user can examine ROM contents as often as
desired but cannot change the contents.
|
| Single in-line memory module (SIMM)
|
Plug-in random-access memory (RAM) unit for
a computer.
|
| Underwriters Laboratory (UL)
|
Independent organization that defines
electrical standards.
|
| Uninterruptible power supply (UPS)
|
Battery that supplies continuous power to a
computer system if there is a failure or an interruption in the AC power
source.
|