Rockwell Automation 57C570 AutoMax PC3000 User Manual - Manual (Page 282)

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Control Block language: a computer programming language used for
closedĆloop regulation and continuous process control of a typical industrial
control application. Control Block language uses BASIC statements to comment
and document programs and to control functions.
core: the central portion of an optical fiber that actually carries the light. It is
usually described by its diameter in microns. For example, 50/125 means 50
micron diameter core, 125 micron diameter cladding.
CPU: exchanges information between programs using the Common memory
variables and runs your application programs. See also PC3000 Processor.
crimping tool: a mechanical device that is used to crimp a contact and a ferrule
of a BNC Plug connector.
DCE: Data Communication Equipment. 1) Equipment that provides the
functions required to establish, maintain, or terminate a connection. 2) The
signal conversion and coding required for communication between data terminal
equipment and data circuits. Examples include modems, line drivers, coaxial
cable, satellite links, etc. DCE may or may not be an integral part of a computer.
DCSĆNET network: AutoMax Distributed Control System Network. The
AutoMax PC3000's DCSĆNET network interface communication processor for
the AutoMax PC3000. Stores and manipulates status and data registers for the
PC3000 DCSĆNET network drop.
dielectric: a material that serves as an insulator.
discontinuity: a broken connection (open circuit), or loss of specified
connection characteristic.
discrete input/output: an input/output that has an individual circuit connection
at the I/O module that corresponds directly to a data table bit or word that stores
the value of the signal at the I/O circuit (digital or analog). This allows the ladder
logic to have discrete access to the I/O value.
drop: devices that are connected to the AutoMax DCSĆNET network. See also
Node.
drop depth: configures a specific device (drop) to function as multiple drops.
For example, setting the drop number of an AutoMax PC3000 to 05 and its drop
depth to 3 configures it to function as drops 05, 06, and 07.
drop number: a unique number assigned to a device (drop) or network
enabling the AutoMax PC3000 to communicate on the DCSĆNET network.
DTE: Data Terminal Equipment. Equipment that is attached to a network to
send or receive data, or both. Programmable controllers, workstations, and
interface modules are examples of DTEs.
dust cap: a device attached to a connector to provide protection against dust
and foreign debris.
Enhanced BASIC Language: a computer programming language modeled
after standard BASIC. It consists of simple statements, functions, and math
notations to perform operations.
Enhanced Ladder Language: a computer language used for programming
sequence control and machine interlocking operations in a typical industrial
control application.
ferrule: a short tube used to make a solderless connection to shielded or
coaxial cable.
fiberĆoptic link: a data transmission system consisting of a transmitter, receiver,
and length of fiberĆoptic cable.
fiber optics: light pulse transmission through optical fibers.
ground: a connection between an electrical circuit and the earth, or some
conducting body (e.g., chassis) serving in place of earth.