Enhanced and Ethernet PLC-5 Programmable Controllers

1 Enhanced and Ethernet PLC-5 Programmable Controllers1785-L11B, -L20B, -L30B, -L40B, -L40L, -L60B, -L60L, -L80B, -L20E, -L40E, -L80E, -L26B, -L46B, -L86 BUser 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 available from your local Rockwell Automation sales office or online at ) 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 no event will Rockwell Automation, Inc.

2 Be responsible or liable for indirect or consequential damages resulting from the use or application of this 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 patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc.

3 Is this manual, when necessary we use notes to make you aware of safety 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 information that is critical for successful application and understanding of the 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 recognize the consequenceSHOCK HAZARDL abels may be located on or inside the equipment ( , drive or motor) to alert people that dangerous voltage may be HAZARDL abels may be located on or inside the equipment ( , drive or motor)

4 To alert people that surfaces may be dangerous 1785-UM012D-EN-P - July 2005 Summary of ChangesSummary of ChangesChanges to this ManualThis user manual contains new and updated black revision bars, as shown on the left, indicate the specific locations of the new information, refer to the table the New InformationAdditional Ethernet PLC-5 controller EnhancementEthernet PLC-5 Controllers support use of the 1785-RC Relay relay cartridge serves as an interface from the controller to a user-supplied external device such as an Allen-Bradley 700P relay. When the controller is in run mode, it monitors online ladder program edits and I/O forcing activity.

5 When either of these is detected, the controller opens the relay on the relay cartridge for one New and Updated InformationIs on PageDomain Name Service11-15 User Provided Web Pages11-16 Multihop Messaging over Ethernet11-29 TCP/IP Communications11-32 Additional Ethernet Diagnostics11-35 Memory Card DiagnosticsB-12 Troubleshooting and DiagnosticsF-2 Publication 1785-UM012D-EN-P - July 2005 Summary of Changes 2 Notes1 Publication 1785-UM012D-EN-P - July 2005 Table of ContentsPrefacePurpose of This Manual.. P-1 Related PLC-5 Documentation .. P-1 Terms Used in This Manual.. P-2 Manual Overview .. P-3 Chapter 1 Understanding Your Programmable ControllerUsing This Chapter.

6 1-1 Lay Out the System .. 1-1 Identifying controller Components .. 1-2 PLC-5 /11, -5/20, and -5/26 controller Front Panels .. 1-3 PLC-5 /40, -5/46, -5/60, -5/80, and -5/86 controller Front Panel.. 1-5 PLC-5 /20E controller Front Panel .. 1-6 PLC-5 /40E and -5/80E controller Front Panels .. 1-7 PLC-5 /40L and -5/60L controller Front Panels .. 1-8 Programming Features .. 1-10 Using a controller Channel as a Remote I/O Scanner .. 1-11 Using a controller Channel as a Remote I/O Adapter .. 1-12 Using a PLC-5 /40L, -5/60L Programmable controller as an Extended-Local I/O Scanner .. 1-14 Chapter 2 Selecting and Placing I/OUsing This Chapter.

7 2-1 Selecting I/O Modules.. 2-1 Guidelines for Selecting I/O Modules .. 2-2 Selecting I/O Module Density .. 2-2 Placing I/O Modules in a Chassis .. 2-3 Chapter 3 Placing System HardwareUsing This Chapter .. 3-1 Determining the Proper Environment .. 3-1 Protecting Your controller .. 3-3 Preventing Electrostatic Discharge .. 3-3 Laying Out Your Cable Raceway.. 3-4 Categorize Conductors .. 3-4 Route Conductors .. 3-4 Laying Out Your Backpanel Spacing .. 3-5 Chassis Dimensions (Series B) .. 3-5I/O Chassis and External Power Supply Dimensions .. 3-6 Grounding Your System .. 3-6 Publication 1785-UM012D-EN-P - July 2005 Table of Contents 2 Chapter 4 Addressing I/O and controller MemoryUsing This Chapter.

8 4-1I/O Addressing Concept .. 4-1 Choosing an Addressing Mode .. 4-3 Addressing Block-Transfer Modules.. 4-7 Addressing Summary .. 4-7 Assigning Racks .. 4-8 Understanding PLC-5 controller Memory .. 4-10 Understanding Data Storage (Data-Table Files) .. 4-11 Addressing File Types .. 4-13 Understanding Program-File Storage .. 4-15 Addressing .. 4-16 Specifying I/O Image Addresses .. 4-16 Specifying Logical Addresses .. 4-17 Specifying Indirect Addresses .. 4-18 Specifying Indexed Addresses .. 4-20 Specifying Symbolic Addresses .. 4-21 Optimizing Instruction Execution Time and controller Memory .. 4-22 Effectively Using I/O Memory.

9 4-24 Chapter 5 Communicating with controller -Resident I/OUsing This Chapter .. 5-1 Introduction to PLC-5 controller Scanning .. 5-1 Program Scanning .. 5-2 Transferring Data to controller -Resident I/O.. 5-3 Transferring Discrete Data to controller -Resident I/O .. 5-3 Transferring Immediate I/O Requests .. 5-3 Transferring Block-Transfer Data to controller -Resident I/O . 5-4 Configuring the System for controller -Resident I/O .. 5-4 Chapter 6 Communicating with Remote I/OUsing This Chapter .. 6-1 Selecting Devices That You Can Connect .. 6-2 Introduction to Remote I/O .. 6-3 Designing a Remote I/O Link .. 6-4 Configuring a controller Channel as a Scanner.

10 6-6 Define an I/O Status File .. 6-7 Specify Channel Configuration Information .. 6-7 Specify the Scan List .. 6-9 Communicating to a Remote I/O Node Adapter .. 6-11 Troubleshooting Remote I/O Communication Difficulties .. 6-12 Transferring Block Data .. 6-13 Block-Transfers of Remote I/O Data .. 6-15 Block-Transfer Sequence with Status Bits .. 6-17 Publication 1785-UM012D-EN-P - July 2005 Table of Contents 3 Block-Transfer Programming Considerations .. 6-19 General Considerations .. 6-19 For controller -Resident Local Racks .. 6-20 Monitoring Remote I/O Scanner Channels .. 6-21 Monitoring transmission retries.