INTRODUCTION
GLOSSARY OF TERMS AND ABBREVIATIONS
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I-E96-417A
®
GLOSSARY OF TERMS AND ABBREVIATIONS
Table
contains a glossary of terms and abbreviations.
® - Network 90 is a registered trademark of Elsag Bailey Process Automation.
Table 1-2. Glossary of Terms and Abbreviations
Term
Definition
ACIA
Asynchronous communication interface adapter. A device that interfaces RS-232-C
serial computer, peripheral or modem data. Provides serial/parallel data conversion,
handshaking control, and data receive and transmission.
DCE
Data communication equipment or data circuit-terminating equipment. Equipment
that establishes and terminates a communication link between two devices. In
RS-232-C communication systems, the DCE nomenclature indicates the signals that
appear at specified cable connection contacts. A modem is an example of this type of
device.
Dipswitch
A dual in-line package that contains switches.
DTE
Data terminal equipment. Equipment comprising the data source, data sink or both
that provides the communication control function. In RS-232-C communication
systems, the DTE nomenclature indicates the signals that appear at specified cable
connection contacts. Terminals and printers are examples of this type of device.
FTP
Field termination panel. A panel inside the INFI 90 cabinet on which to mount
termination units.
Handshaking
Procedures and protocol used by two devices to establish and maintain
communication.
Module Bus
Peer to peer communication link used to transfer information between intelligent
modules within a process control unit.
PCU
Process control unit. A node on the plant-wide communication network containing
master and slave modules.
RS-232-C
A serial communication interface standard developed by the Electronics Industry
Association (EIA) specifying what signals and voltages will be used to transmit data
from computer (DTE) to a modem (DCE).
Serial Data
Data transmitted sequentially on one signal line.
Termination Unit
Provides input/output connection between plant equipment and the INFI 90/Network
90
®
process modules.
