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Logix5000 Controllers Controller Information and Status

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Programming ManualLogix5000 Controllers Information and StatusCatalog Numbers 1756 ControlLogix, 1756 GuardLogix, 1768 Compact GuardLogix, 1768 CompactLogix, 1769 CompactLogix, 1789 SoftLogix, PowerFlex with DriveLogixImportantUserInformationSolid-state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (publication SGI-1.1 available from your local Rockwell Automation sales office or online at http://www.rockwellautomation.com/literature/) describes some important differences between solid-state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid-state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams.No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this manual.Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc., is prohibited.Throughout this manual, when necessary, we use notes to make you aware of safety considerations.Allen-Bradley, Rockwell Automation, ControlLogix, CompactLogix, FlexLogix, SoftLogix, GuardLogix, PowerFlex, RSLogix 5000, Logix5000, Rockwell Software and TechConnect are trademarks of Rockwell Automation, Inc.Trademarks not belonging to Rockwell Automation are property of their respective companies.WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss.ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attentions help you identify a hazard, avoid a hazard, and recognize the consequenceSHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous voltage may be present.BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may reach dangerous temperatures.IMPORTANTIdentifies information that is critical for successful application and understanding of the product.RockwellAutomationPublication1756-PM015D-EN-P-November20113Summary of ChangesThis manual contains new and updated information. Changes throughout this revision are marked by change bars, as shown to the right of this paragraph.New and Updated InformationThis table contains the changes made to this revision.TopicPageThere are minor changes in Chapter 3 for the new entries captured in the controller log: •Inhibit safety signature delete in RUN•Allow safety signature delete in RUN•WhenevertheChangesToDetectvaluechanges-Auditvalue.23ChangedetectionwasaddedforLogixControllers,Chapter4.454RockwellAutomationPublication1756-PM015D-EN-P-November2011SummaryofChangesNotes:Rockwell Automation Publication 1756-PM015D-EN-P - November 20115Table of ContentsSummary of ChangesNew and Updated Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Table of ContentsPrefacePurpose of This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Additional Resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Chapter 1ConnectionsIntroduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Inhibit a Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Manage a Connection Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Configure a Major Fault to Occur. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Monitor the Health of a Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Chapter 2Determine Controller Memory InformationIntroduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Estimate Memory Information Offline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18View Run-time Memory Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Write Logic to Get Memory Information . . . . . . . . . . . . . . . . . . . . . . . . . . 20Get Memory Information from the Controller. . . . . . . . . . . . . . . . . . 20Choose the Memory Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Convert INTs to a DINT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Chapter 3Controller Logging Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Controller Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Controller Log Header. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Controller Log Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Entries Captured in the Controller Log . . . . . . . . . . . . . . . . . . . . . . . . 25Controller Log Buffer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Controller Log Files and the Removable Media . . . . . . . . . . . . . . . . . 26Writing the Controller Log to the CompactFlash Card. . . . . . . . . . 27Controller Logging Counters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Log File Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Log File Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Create Custom Log Entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Sample Ladder Logic File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Controller Log Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

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