INTRODUCTION
GLOSSARY OF TERMS AND ABBREVIATIONS
WBPEEUI250016A1
1 - 5
GLOSSARY OF TERMS AND ABBREVIATIONS
Table
lists the terms and abbreviations used in this
instruction that are unique to Elsag Bailey Process
Automation.
REFERENCE DOCUMENTS
Table
lists the documents that provide additional informa-
tion for related hardware and software. Refer to them as
needed.
DOCUMENT CONVENTIONS
The ? in a nomenclature or a part number indicates a variable
for that position (e.g., IMMFP1?)
Table 1-1. Glossary of Terms and Abbreviations
Term
Definition
Checksum
A value computed from a data stream by treating each element as a number and
computing a sum of the elements.
Controlway
High speed, redundant, peer-to-peer communication link. Used to transfer
information between intelligent modules within a process control unit.
Exception Report
Information update generated when the status or value of a point changes by more
than a specified significant amount or after a specified period of time; abbreviated as
XR.
Module Bus
Peer-to-peer communication link used to transfer information between intelligent
modules within a process control unit.
Node
A point of interconnection to a network.
NVM
Nonvolatile random access memory. Retains stored information when power is
removed.
Process Control Unit A node on the plant wide communication network containing control and I/O
modules.
Termination Module
Provides input/output connection between plant equipment and the INFI 90/Network
90
®
modules.
Termination Unit
Provides input/output connection between plant equipment and the INFI 90/Network
90 modules.
Table 1-2. Reference Documents
Document Number
Title
I-E96-200
Function Code Application Manual
I-E96-408
NICL01 Communication Termination Module
I-E96-422
NTCL01 Communication Termination Unit