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Logix5000 Controllers IO and Tag Data Programming Manual

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Logix5000 Controllers I/O and Tag DataCatalog Numbers 1756 ControlLogix, 1756 GuardLogix, 1768 Compact GuardLogix, 1769 CompactLogix, 1789 SoftLogix, PowerFlex with DriveLogixProgramming ManualImportant User InformationSolid 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, RSLogix 5000, Logix5000, RSLinx Classic, RSLinx Enterprise, PanelView, PLC-2, PLC-5, SLC, CompactLogix, ControlLogix, GuardLogix, FlexLogix, DriveLogix, SoftLogix, Rockwell Software, FactoryTalk Security, and TechConnect are trademarks of Rockwell Automation, Inc.Trademarks not belonging to Rockwell Automation are property of their respective companies.WARNINGIdentifies 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.IMPORTANTIdentifies information that is critical for successful application and understanding of the product.ATTENTIONIdentifies 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 consequence.SHOCK HAZARDLabels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous voltage may be present.BURN HAZARDLabels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may reach dangerous temperatures.3Publication 1756-PM004C-EN-P - October 20093Summary of ChangesIntroductionThe release of this document contains new information.New InformationNew information is marked by change bars in the side column, as shown to the right.SectionChangesChapter 1New information and examples for electronic keying.Chapter 4Procedures and descriptions for the external access and constant tag attributes that control access tocontroller tags.4Publication 1756-PM004C-EN-P - October 2009Summary of ChangesNotes:5Publication 1756-PM004C-EN-P - October 20095Table of ContentsPrefacePurpose of This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Chapter 1Communicate with I/O ModulesIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Requested Packet Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Communication Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Direct or Rack-Optimized Connection . . . . . . . . . . . . . . . . . . . . . 11Ownership . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Electronic Keying. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Address I/O Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Buffer I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Chapter 2Organize TagsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Tag Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Data Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Guidelines for Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Create a Tag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Create an Array. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Configure an Array . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Create a User-defined Data Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Guidelines for User-defined Data Types . . . . . . . . . . . . . . . . . . . . 40Create a User-defined Data Type . . . . . . . . . . . . . . . . . . . . . . . . . . 40Describe a User-defined Data Type . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Activate Pass-Through and Append Descriptions. . . . . . . . . . . . . 43Paste a Pass-Through Description . . . . . . . . . . . . . . . . . . . . . . . . . 44Address Tag Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Alias Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46Display Alias Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Assign an Alias. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Assign an Indirect Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Array Subscript Out of Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52Tag Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Language Switching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Chapter 3Force I/OIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55Enable Forces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56Disable or Remove a Force. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56Check Force Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57FORCE Status Indicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58GSV Instruction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58When to Use I/O Force . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

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文档介绍: Logix5000 Controllers IO and Tag Data Programming Manual

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