INTRODUCTION
GLOSSARY OF TERMS AND ABBREVIATIONS
1 - 4
I-E96-308A
®
3. Refer to
for what to do if a problem occurs.
4. Refer to
for the scheduled steps needed to main-
tain the DSM.
5. Refer to
for how to replace a module.
6. Refer to
for how to order parts. This section also
describes some of the services Bailey Controls offers.
GLOSSARY OF TERMS AND ABBREVIATIONS
Term
Definition
Configuration
A control strategy with function blocks.
Controlway
A redundant peer-to-peer communication path for point data transfer between
intelligent modules within a process control unit.
Digital
A discrete input signal having only on and off states.
Dipshunt
Dual in-line package with shorting bars.
Dipswitch
A dual in-line package that contains single pole switches.
EWS
Engineering Work Station; an integrated hardware and software personal computer
system for configuring and monitoring Infi 90 modules and systems.
Function Code
An algorithm that defines specific functions. These functions link together to form the
control strategy.
LED
Light Emitting Diode; the module front panel indicator that shows status and error
messages.
LSB
Least Significant Bit; the bit of a binary number that carries the least numerical
weight.
Master Module
One of a series of controller modules designed to direct field processes through a
slave module. The Multi-Function Processor is an example.
MFP
Multi-Function Processor Module; a multiple- loop controller with data acquisition and
information processing capabilities.
MMU
Module Mounting Unit; a card cage that provides electrical and communication
support for Infi 90 modules.
MSB
Most Significant Bit; the bit of a binary number that carries the most numerical
weight.
OIS
Operator Interface Station; integrated operator console with data acquisition and
reporting capabilities. It provides a window into the process for flexible control and
monitoring.
PCU
Process Control Unit; rack type industrial cabinet that contains master, slave and
communication modules, and their communication paths.
