Rockwell Automation 1775-MX_S4A,D17756.3.1 User Manual PLC-3 BACKUP CONC(OR.DU1 - Manual (Page 5)

Preface
P-1
Preface
This manual shows you how to install, configure, and operate a backup
system configured with PLC-3 or PLC-3/10 processors.
In this manual we describe:
backup system concepts
procedures for installing backup systems
procedures for operating backup systems
programming
techniques
fault diagnosis
Before you read this manual or attempt to use a backup system, you should
be familiar with the PLC-3 or PLC-3/10 programmable controller. Also,
you may need to be familiar with one or more optional modules used in
backup systems.
Table A describes the contents of each chapter in this manual.
Table A
Manual Contents
If you want to read about: Refer to Chapter:
an overview of backup concepts; description of
scanner and memory backup configurations
1 Ć Choosing a Backup Configuration
procedures for installing a backup system; wiring
diagrams
2 Ć Installing a Backup System
procedures for starting up, shutting down, restarting,
disconnecting and restarting a repaired processor
3 Ć Operating a Backup System
controlling memory communication modules using
LIST commands and message instructions
4 Ć Using the 1775ĆMX Memory
Communication Module
signal conditioning, timing requirements, forcing I/O,
block transfers, status words, considerations when
using communication adapter and memory
communication modules
5 Ć Programming Techniques
what happens when a fault occurs; locating faults by
using indicators and status words
6 Ć Diagnosing Faults
Manual Objectives
Audience
What This Manual Contains