Rockwell Automation 1747-BSN Backup Scanner Module - Manual (Page 6)

Publication 1747-UM010B-EN-P - September 2003
Table of Contents ii
Configuration Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Backup Scanner Installation. . . . . . . . . . . . . . . . . . . . . . . . 3-4
Insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Wiring Considerations . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Local Status Link and High-Speed Serial Link Wiring . . . 3-7
RIO Network and RIO Link Wiring . . . . . . . . . . . . . . . . 3-7
DH+ Network Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
RS-232/RS-485 Network Wiring. . . . . . . . . . . . . . . . . . . 3-9
Status LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Chapter 4
Operating Your SLC 500 Backup
System Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
How the 1747-BSN Module Operates . . . . . . . . . . . . . . . . . 4-1
Automatic Transfer of Remote Input Data Over the HSSL 4-1
Data Table Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
How the Backup System Operates . . . . . . . . . . . . . . . . . . . 4-7
Primary Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Secondary Program . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Backup System Theory of Operation . . . . . . . . . . . . . . 4-8
Power-up Sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Processor Mode Change Sequencing . . . . . . . . . . . . . . . . . 4-9
Fail-over Sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Power Down Sequencing . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Restarting a Failed System . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Chapter 5
Configuration and Programming Understanding Remote Input and Output Image Files. . . . . 5-1
RIO Configuration Using G Files. . . . . . . . . . . . . . . . . . 5-3
Rules for Configuring the Scanner . . . . . . . . . . . . . . . . . . . 5-6
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Concerning Complementary I/O . . . . . . . . . . . . . . . . . . 5-6
G-File Considerations For Configuring Remote I/O . . . . . . . 5-12
Crossing Logical Rack Boundaries . . . . . . . . . . . . . . . . . . . 5-12
Creating More than One Logical Rack Device . . . . . . . . 5-13
Understanding M Files. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
M Files Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
M0 Control File Description . . . . . . . . . . . . . . . . . . . . . 5-16
M0 File - RIO Device Inhibit Control . . . . . . . . . . . . . . . . . 5-17
Example of Device Inhibit Control . . . . . . . . . . . . . . . . 5-18
M0 File - RIO Device Reset Control . . . . . . . . . . . . . . . . . . 5-18
Example of Device Reset Control . . . . . . . . . . . . . . . . . 5-19