Rockwell Automation 1747-BSN Backup Scanner Module - Manual (Page 5)

i Publication 1747-UM010B-EN-P - September 2003
Table of Contents
Preface
Who Should Use This Manual . . . . . . . . . . . . . . . . . . . . . . P-1
How to Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . P-1
Manual Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-1
Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . P-2
Conventions Used in This Manual . . . . . . . . . . . . . . . . . . . P-2
Rockwell Automation Support . . . . . . . . . . . . . . . . . . . . . . P-3
Your Questions or Comments on the Manual . . . . . . . . P-3
Chapter 1
Overview System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Backup Scanner I/O Image Division . . . . . . . . . . . . . . . 1-4
How the Backup Scanner Scans Remote I/O . . . . . . . . . . . 1-4
SLC and Scanner Asynchronous Operation . . . . . . . . . . . . . 1-5
How the Scanner Interacts with Adapters . . . . . . . . . . . . . . 1-6
Scanner I/O Image Concepts . . . . . . . . . . . . . . . . . . . . 1-6
Transferring Data with RIO Discrete and Block Transfers 1-9
Physical and Logical RIO Link Specifications . . . . . . . . . 1-10
Extended Node Capability . . . . . . . . . . . . . . . . . . . . . . 1-10
Complementary I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Guidelines for Configuring Complementary I/O . . . . . . 1-12
Summary for Placing Modules Used In
Complementary I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Application Considerations . . . . . . . . . . . . . . . . . . . . . . 1-17
Complementary 1771 I/O Module Details . . . . . . . . . . . 1-17
Hardware Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
Configuration Dip Switch Settings. . . . . . . . . . . . . . . . . 1-19
Compatible Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
Backup Concepts for the SLC 500 System. . . . . . . . . . . . . . 1-21
Why Use a Backup System? . . . . . . . . . . . . . . . . . . . . . 1-21
Applying 1747-BSN Backup Scanner Modules to the
SLC-500 Programmable Controller. . . . . . . . . . . . . . . . . 1-21
A Typical SLC 500 Backup Configuration . . . . . . . . . . . 1-22
How the SLC 500 Backup System Works. . . . . . . . . . . . 1-22
Chapter 2
Quick Start for Experienced Users Required Tools and Equipment . . . . . . . . . . . . . . . . . . . . . 2-1
Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Chapter 3
Installation and Wiring Compliance to European Union Directives . . . . . . . . . . 3-1
EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Low Voltage Directive . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2