Bailey infi 90 NIMP01, Инструкция

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INTRODUCTION
GLOSSARY OF TERMS AND ABBREVIATIONS
1 - 4 I-E96-401A
®
Contents or Index to find specific information after the module
is operating.
GLOSSARY OF TERMS AND ABBREVIATIONS
Table 1-1 lists definitions of the terms and abbreviations used
in this instruction.
Table 1-1. Glossary of Terms and Abbreviations
Term Definition
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.
Dipshunt Dual in-line package with shorting straps.
DTE Data terminal equipment. Equipment comprising the data source, data sink or both
that provides the communication control function. In RS-232-C communication sys-
tems, the DTE nomenclature indicates the signals that appear at specified cable con-
nection contacts. Terminals and printers are examples of this type of device.
ESD Electrostatic sensitive devices. Electronic components subject to damage or failure
when exposed to an electrostatic charge; require special handling.
Handshaking Procedures and protocol used by two devices to establish and maintain communica-
tion.
MFT Machine fault timer. Reset by the processor during normal operation. If not reset reg-
ularly, the MFT times out and the module stops.
MMU Module mounting unit. A card cage that provides electrical and communication sup-
port for INFI 90/Network 90
®
modules.
RS-232-C and
RS-485 Two serial communication interface standards developed by the Electronics Industry
Association (EIA) specifying what signals and voltages will be used to transmit data
from a computer (DTE) to a modem (DCE).
SCSI Small computer system interface. An I/O bus standard by the American National
Standard Institute (ANSI) that defines the protocol and peripheral interconnection for-
mats of a high speed parallel bus for use throughout the computer industry.
SRAM Static random access memory. Contents are lost when power is removed.
TM Termination module. Provides input/output connection between plant equipment and
the INFI 90/Network 90 modules.
TMU Termination mounting unit. A card cage that provides housing for INFI 90/Network 90
termination modules.
® Network 90 is a registered trademark of Elsag Bailey Process Automation.