Publication 1756-UM001G-EN-P - January 2007
8
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . 111
ControlLogix Redundancy Overview . . . . . . . . . . . . . . . . . 111
Build a Redundant System . . . . . . . . . . . . . . . . . . . . . . . . . 113
System Considerations . . . . . . . . . . . . . . . . . . . . . . . . . 114
ControlNet Considerations in Redundant Systems . . . . . . . . 114
EtherNet/IP Considerations in Redundant Systems . . . . . . . 115
IP Address Swapping . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
SIL 2 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
SIL 2 Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Choose a Controller That Has Nonvolatile Memory. . . . . . . 120
Prevent a Major Fault During a Load. . . . . . . . . . . . . . . 120
Use a CompactFlash Reader. . . . . . . . . . . . . . . . . . . . . . . . 121
Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Check If the Battery Is Low . . . . . . . . . . . . . . . . . . . . . . . . 124
Estimate 1756-BA1 Battery Life . . . . . . . . . . . . . . . . . . . . . 124
Estimate 1756-BA2 Battery Life
(1756-L6x series B controllers only) . . . . . . . . . . . . . . . . . . 126
Estimate Warning Time . . . . . . . . . . . . . . . . . . . . . . . . 127
Maintain a 1756-BATM Battery Module . . . . . . . . . . . . . . . 128
Check the BAT LED Indicator. . . . . . . . . . . . . . . . . . . . 128
Store Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Summary of Contents for controllogix 1756-L55M12
Page 4: ...Publication 1756 UM001G EN P January 2007 Summary of Changes 4 Notes...
Page 10: ...Publication 1756 UM001G EN P January 2007 10 Notes...
Page 66: ...Publication 1756 UM001G EN P January 2007 66 Place Configure and Monitor I O Modules Notes...
Page 82: ...Publication 1756 UM001G EN P January 2007 82 Develop Applications Notes...
Page 122: ...Publication 1756 UM001G EN P January 2007 122 Maintain Nonvolatile Memory Notes...
Page 130: ...Publication 1756 UM001G EN P January 2007 130 Maintain the Battery Notes...
Page 134: ...Publication 1756 UM001G EN P January 2007 134 LED Indicators Notes...