Rockwell Automation 1715-OF8I User Manual

User Manual

Redundant I/O System

Catalog Numbers 1715-AENTR, 1715-IB16D, 1715-OB8DE, 1715-IF16, 1715-OF8I

Important User Information

IMPORTANT

Read this document and the documents listed in the additional resources section about installation, configuration, and operation of this equipment before you install, configure, operate, or maintain this product. Users are required to familiarize themselves with installation and wiring instructions in addition to requirements of all applicable codes, laws, and standards.

Activities including installation, adjustments, putting into service, use, assembly, disassembly, and maintenance are required to be carried out by suitably trained personnel in accordance with applicable code of practice.

If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.

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.

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 consequence.

Identifies information that is critical for successful application and understanding of the product.

Labels may also be on or inside the equipment to provide specific precautions.

SHOCK 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.

ARC FLASH HAZARD: Labels may be on or inside the equipment, for example, a motor control center, to alert people to potential Arc Flash. Arc Flash will cause severe injury or death. Wear proper Personal Protective Equipment (PPE). Follow ALL Regulatory requirements for safe work practices and for Personal Protective Equipment (PPE).

Allen-Bradley, Rockwell Software, Rockwell Automation, ControlFLASH, ControlLogix, Logix5000, Studio 5000 Logix Designer, RSLinx, RSLo gix, Stratix 8000, and Studio 5000 are trademarks of Rockwell Automation, Inc.

Trademarks not belonging to Rockwell Automation are property of their respective companies.

Summary of Changes

This publication 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 Information

This table contains the changes made to this publication revision.

Table 1 - New and Updated Information

Top ic Pa ge

Updates to include SIL 2 operations with L7 ControlLogix® controllers 13

Studio 5000® Logix Designer™ application added throughout document and new information about who can use this system

Using ControlLogix in SIL 2 Applications Safety Reference Manual added to Additional Resources section

Added redundant 1715 adapter module and status indicator information 15

Added information about using a 1715 system in a SIL 2 application 16

Corrected drawing; added 1756-L7 controller and 1756-RM2 module; added reference for DLR topologies.

Corrected drawing; added 1756-L7 controller and 1756-RM2 module 21

Network status indicator information 27

CIP messages 30

Required connections for duplex and simplex operation 31

Listen Only connections 32

Conformal coating is available on all 1715 modules 39

1715-A2A adapter base unit fuse graphic and removal and replacement information 42

Digital input termination assembly removal and replacement of fuses 47

Digital output termination assembly removal and replacement of fuses 48

Analog input termination assembly removal and replacement of fuses 49

Power requirements 53

1715 chassis firmware upgrade; power recycle needed 54

ControlF LASH™ revis ion number 54

Power requirements for PELV/SELV 63

Correction to system power graphic 76

Digital Input diagram correction-standard inputs 80

Short circuit information 79

Digital Input diagram correction-line monitored inputs. Added reference for ca libration drift checks.

Corrected digital input termination assembly graphics 85

Added Attention table for inductive loads 87

Added missing arrow on 1715-OB8DE function block diagram, going from the Control B box to the Output Control.

Diagram correction-digital outputs 93

Damaging pins when inserting/removing I/O modules under power can fault the system 95

Corrected analog inputs graphic by removing footnote numbers on voltage 96

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 3

Summary of Changes

Table 1 - New and Updated Information

Top ic Pa ge

Added information about analog field loops, input modules and analog input field devices

Find and record MAC addresses 109

Added status indicator labels to the adapter graphic of the locking mechanism 110

Changes throughout the Assign an IP Address on the BOOTP/DHCP Server section 111

Verify BOOTP network settings Important table added 112

Added last step to disable BootP/DHCP 114

Module inhibiting when using multiple controllers 128

Corrected ohms symbol and added DC on voltage numbers 132

Shutdown states 137

Removed references to the 1756-IA16 module 138

Digital input module tags 138

Digital output module tags 139

Correction of table header to ControlLogix Analog I/O Modules and Components 142

Added performance criteria for the analog input module 143

Added performance criteria for the analog output module 144

Module inhibiting when using multiple controllers 145

Changed Get Support Now website to the Product and Compatibility Download Center website, added Add-On Profile versions for the adapter and I/O modules. Added reference to the release list of approve d versions on www.tuv asi.com.

Updated screen shots throughout to reflect Logix Designer version 21 interface and to include SIL 2 operation options

Connections for Listen Only 162

Module definition parameters for 1715-IB16D digital input module in Duplex mode for SIL 2 applications

Connections for Listen Only 188

Added Important table about changing Alarms/Limits values 196

Added a new chapter about SIL 2 safety operation with 1715 redundant I/O 201

Added a new chapter about SIL 2 Add-On Instructions with 1715 redundant I/O 223

Corrected text from 3.9 to 4.3. 282

Corrected text from 15 to 15.4. Added Calibration Drift Checks section. 283

SIL 2 safety application online configuration restrictions 285

Added appendix for PFD and PFH calculations for a SIL 2 system 289

Added appendix for SIL 2 Applications Checklist 303

Added appendix for Tag Definitions 305

150

160

175

4 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Preface

Redundancy System Overview

Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Required Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Studio 5000 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Chapter 1

Redundant 1715 Adapter Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1715 I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

1715 I/O Modules in SIL 2 Applications . . . . . . . . . . . . . . . . . . . . . . . 16

System Architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Termination Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Base Unit Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

1715-AENTR Adapter Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

I/O Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Module Positioning in the 1715 Redundant I/O System. . . . . . . . . 18

Layout the Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

System Context . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Simplex Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Duplex Architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Mixed Architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Bus Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Switchover Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Obtaining a New IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Ethernet Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Communication on the EtherNet/IP Network . . . . . . . . . . . . . . . . . 30

System Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

RPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Connection and Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Installation Instructions

Chapter 2

Environment and Enclosure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Prevent Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

European Hazardous Location Approval . . . . . . . . . . . . . . . . . . . . . . . 35

Multi-point Network Communication Connections . . . . . . . . . . . . 35

Field-side Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Removal and Insertion Under Power (RIUP) Fuses . . . . . . . . . . . . . 35

North American Hazardous Location Approval . . . . . . . . . . . . . . . . 36

Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Required Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Spacing Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

System Hardware Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

1715-AENTR Adapter Redundant Module Pair . . . . . . . . . . . . . . . . 40

1715 Digital and Analog I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . 41

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 5

Table of Contents

1715-A2A Adapter Base Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

1715-A3IO I/O Base Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

I/O Termination Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

1715-C2 Expansion Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

1715-N2T and 1715-N2S Slot Filler Covers . . . . . . . . . . . . . . . . . . . . 52

Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Cooling Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Heating Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Specify an Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

System Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Module Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Base Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Install Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Step 1: Enclosure DIN Rail Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Step 2: Build the System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Product Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

DIN Rail Mounting Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

DIN Rail Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Component Size and Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Install the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Install the Adapter Base Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Install the I/O Base Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Install Termination Assembly to I/O Base Unit. . . . . . . . . . . . . . . . . . . . . 67

Mount Termination Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Mount I/O Expansion Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Cable Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Expansion Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Install Expansion Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Wire the Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Connect the 24V DC System Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Wire the Ground Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Connect Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Recommended Circuits for Digital Inputs . . . . . . . . . . . . . . . . . . . . . . 80

Recommended Circuits for Digital Outputs . . . . . . . . . . . . . . . . . . . . 87

1715-OB8DE Digital Output Module Functional Block Diagram

Recommended Circuits for Analog Inputs . . . . . . . . . . . . . . . . . . . . . . 94

Recommended Wiring for Analog Output Modules . . . . . . . . . . . . 100

Connect the Adapter to the Ethernet Network . . . . . . . . . . . . . . . . . . . . 102

Module Keying. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Verify Coding Pegs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Install the Adapter Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Assign an IP Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Step 1: Assign an IP Address on the BOOTP/DHCP Server . . . . 111

Step 2: Configure the Module with RSLinx Software . . . . . . . . . . . 114

Install the I/O Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Install Slot Filler Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Remove Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

6 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Chapter 3

Table of Contents

Digital I/O Operation

1715 Digital Module Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

1715-IB16D Digital Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

1715-OB8DE Digital Output Module . . . . . . . . . . . . . . . . . . . . . . . . 125

Common Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Determining Input Module Compatibility . . . . . . . . . . . . . . . . . . . . . . . . 126

Termination Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Determining Output Module Compatibility . . . . . . . . . . . . . . . . . . . . . . 127

Termination Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Using Features Common to 1715 Standard Digital I/O Modules . . . 127

Removal and Insertion Under Power (RIUP). . . . . . . . . . . . . . . . . . 127

Module Fault Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Fully Software Configurable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Module Inhibiting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Status Indicator Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Features Specific to 1715-IB16D Digital Input Modules. . . . . . . . . . . . 129

Data Transfer on Either Cyclic Time or Change of State. . . . . . . . 129

Set RPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Enable Change of State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Field-side Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Features Specific to 1715-OBD8E Digital Output Modules . . . . . . . . 133

Configurable Point-level Output Fault States . . . . . . . . . . . . . . . . . . 133

Output Data Echo. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Diagnostic Latch Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Shutdown State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Energize-on-communication-failure. . . . . . . . . . . . . . . . . . . . . . . . . . . 137

De-energize-to-trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Disable Line Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Fault and Status Reporting between Input Modules

and Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Fault and Status Reporting between Output Modules

and Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Using 1715 Analog I/O Module Features

Chapter 4

1715 Analog Module Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

1715-IF16 Analog Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

1715-OF8I Analog Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Features Common to All

Analog I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Removal and Insertion Under Power (RIUP). . . . . . . . . . . . . . . . . . 144

Module Fault Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Fully Software Configurable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Status Indicator Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Module Inhibiting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 7

Table of Contents

Configure the Redundant I/O System

Operating Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Online Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Offline Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Shutdown Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Ready Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Run Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Shutdown States. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Chapter 5

Before You Begin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Install the Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Install the Add-on Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

If Installing from the CD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

If Installing from the Product Compatibility and

Download Center Website . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

EDS Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Create the Project in the RSLogix 5000 or

Logix Designer Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Step 1: Create the New Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Step 2: Configure the Controller in the RSLogix 5000 or

Logix Designer Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Step 3: Add a 1756-EN2TR Module to the Project . . . . . . . . . . . . . 156

Add the 1715-AENTR Adapter to the I/O Configuration Tree. . . . . 159

Step 1: Configure the Adapter for the EtherNet/IP Network. . . . 159

Options for Setting the IP Addresses of 1715-AENTR Modules . 159

Ethernet Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Step 2: Add the 1715-AENTR Adapter Module to the Project . . 160

Obtaining System Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Add a 1715-IB16D Digital Input Module to the Project . . . . . . . . . . . . 172

Step 1: Add a 1715-IB16D Digital Input Module in

Duplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Step 2: Add a 1715-IB16D Digital Input Module in

Simplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Add a1715-OB8DE Digital Output Module to the Project . . . . . . . . . 181

Step 1: Add a 1715-OB8DE Digital Output Module in

Duplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

Step 2: Add a 1715-OB8DE Digital Output Module in

Simplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Add a 1715-IF16 Analog Input Module to the Project. . . . . . . . . . . . . . 187

Step 1: Add a 1715-IF16 Analog Input Module in

Duplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Step 2: Add a 1715-IF16 Analog Input Module in Simplex Mode 190

Add a 1715-OF8I Analog Output Module to the Project . . . . . . . . . . . 192

Step 1: Add a 1715-OF8I Analog Output Module in

Duplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

Step 2: Add a 1715-OF8I Analog Output Module in

Simplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

8 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Chapter 6

Table of Contents

1715 Redundant I/O System in SIL 2 Safety Applications

SIL 2 Safety Application Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

1715 I/O Modules in SIL 2 Safety Applications . . . . . . . . . . . . . . . . . . . 202

Typical Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204

Internal Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

Power Supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

Requirements for Using 1715 I/O Modules . . . . . . . . . . . . . . . . . . . . . . . 207

Energize-to-action Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

Requirements for ControlLogix-based SIL 2 Applications . . . . . . . . . . 208

Add-On Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208

Connection Reaction Time Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

Using the 1715 Adapter in SIL 2 Applications. . . . . . . . . . . . . . . . . . . . . 209

Reaction to Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210

Using 1715 I/O Modules in SIL 2 Applications . . . . . . . . . . . . . . . . . . . 210

Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210

Considerations for Sensor and Actuator Configurations. . . . . . . . . . . . 214

Configure SIL 2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214

Enable SIL 2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Specify the Connection Reaction Time Limit and

Requested Packet Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Set Safe State Values for Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218

Check SIL 2 Reset Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

View Module Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

Diagnostic Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

Reaction Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

System Reaction Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

Logix System Reaction Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

Configuring the SIL 2 Task Period and Watchdog . . . . . . . . . . . . . . . . . 222

SIL Task/Program Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Additional Resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Using SIL 2 Add-On Instructions with 1715 Redundant I/O Modules

Chapter 7

SIL 2 Add-On Instructions Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

SIL 2 Check Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

Add-On Instruction Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

Add-On Instruction Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228

Download and Import the Add-On Instructions. . . . . . . . . . . . . . . . . . . 229

Import Add-On Instructions to Upgraded Projects. . . . . . . . . . . . . 230

Create a Periodic Task for

SIL 2 Safety Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230

1715 SIL 2 Periodic Task ‘Period’ Configuration. . . . . . . . . . . . . . . 231

Configure an Input Module Add-On Instruction . . . . . . . . . . . . . . . . . . 234

Configure an Output Module Add-On Instruction . . . . . . . . . . . . . . . . 238

AOI Scan Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

Safety Reaction Time Calculations. . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 9

Table of Contents

Redundant I/O System Diagnostics

Status Indicators

Using the Add-On Instruction Data Tags in an

Application Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242

Performing a SIL 2 Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

Chapter 8

Diagnostic Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245

Appendix A

Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

System Faults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

Module Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

Channel Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

Field Faults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

User Application Fault Indications and Logging. . . . . . . . . . . . . . . . 250

Troubleshooting Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

1715 Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252

Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

1715 Digital Input Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256

1715 Digital Output Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258

1715 Analog Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260

1715 Analog Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262

Electronic Keying

1715-IB16D Digital Input Module Diagnostics

Reconfigure a Module Online

Appendix B

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265

Exact Match. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266

Compatible Keying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267

Disabled Keying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269

Appendix C

Threshold Values for Digital Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271

Threshold Diagnostics Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273

Calculate Threshold and Resistor Values . . . . . . . . . . . . . . . . . . . . . . . . . . 276

Calculate the Voltage for Off/On Conditions for

Threshold Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277

Calculate On/Off Condition for Resistor Values . . . . . . . . . . . . . . . 281

Calibration Drift Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283

Appendix D

Use Ladder Logic to Reconfigure an I/O Module . . . . . . . . . . . . . . . . . . 285

Reconfigure a Module via Logix Designer Application . . . . . . . . . . 285

Reconfigure a Module via Ladder Logic. . . . . . . . . . . . . . . . . . . . . . . . 286

10 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Appendix E

Table of Contents

PFD and PFH Calculations for a SIL 2 System

SIL 2 Applications Checklist

I/O Tag Definitions

Index

About PFD and PFH Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289

Determine Which Values to Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289

Calculations for 1715 I/O Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290

PFD Calculations with 10-hour MTTR. . . . . . . . . . . . . . . . . . . . . . . 291

PFD Calculations with 24-hour MTTR. . . . . . . . . . . . . . . . . . . . . . . 297

Appendix F

1715 I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303

Appendix G

1715-AENTR Adapter Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305

1715-IB16D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307

1715-OB8DE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308

1715-IF16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310

1715-OF8I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312

Appendix H

Changes to This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 11

Table of Contents

Notes:

12 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Preface

This manual explains how to install and set up the 1715 Redundant I/O System. This redundant, modular system is designed to work in conjunction with a ControlLogix Enhanced Redundancy System. This system provides fault tolerant I/O and redundancy for use in critical process applications.

This manual is intended for the following individuals, who:

– Understand how to configure and use a ControlLogix System, as well as

a ControlLogix Enhanced Redundancy System

– Understand how to configure remote devices on an Ethernet/IP

network.

Before You Begin

Before you begin using your 1715 Redundant I/O System, verify that you have the software required to install and configure your system.

Required Software

This list identifies the minimum software versions required to use your 1715 Redundant I/O System:

• RSLogix™ 5000 programming software, version 19

• RSLogix 5000 programming software, version 20 or later when using

SIL 2 operations

• RSLinx® Classic software, version 2.57

• Microsoft Windows XP Service Pack 2, or higher; Microsoft Windows

Vista; Microsoft Windows 7, 32- and 64-bit; and Microsoft Windows 2003 Server operating systems

• Adapter Add-on Profile at: Product Compatibility and Download Center

website

• I/O Modules Add-on Profile at: Product Compatibility and Download

Center website

ATT EN TI ON : ControlLogix L7 controllers are certified in RSLogix 5000 version 20 or later for SIL 2 operations. See the latest certifications for software and firmware at http://www.rockwellautomation.com

http://www.tuvasi.com

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 13

for SIL 2 certification listings.

. See the TÜV website at

Preface

Studio 5000 Environment

The Studio 5000 Engineering and Design Environment combines engineering and design elements into a common environment. The first element in the Studio 5000 environment is the Logix Designer application. The Logix Designer application is the rebranding of RSLogix 5000 software and continues to be the product to program Logix5000™ controllers for discrete, process, batch, motion, safety, and drive-based solutions.

Additional Resources

These documents contain additional information related to products from Rockwell Automation.

Resource Description

Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1

Product Certifications website,

http://www.ab.com

1715 Redundant I/O System Technical Specifications, publication 1715-TD001

EtherNet/IP Modules in Logix5000 Control Systems, publication ENET-UM001

ControlLogix Enhanced Redundancy System, publication

1756-UM535

ControlLogix Digital I/O Modules User Manual, publication

1756-UM058

ControlLogix Analog I/O Modules User Manual, publication 1756-UM009

Using ControlLogix in SIL 2 Applications Safety Reference Manual, publication 1756-RM001

Provides general guidelines for installing a Rockwell Automation® industrial system.

Provides declarations of conformity, certific ates, and other certification details.

Provides technical specifications for components of the 1715 Redundant I/O System.

Describes how you can use EtherNet/IP modules with your Logix5000 controller and communicate with various devices on the Ethernet network.

Provides design and configuration information for a ControlLogix Redundancy System.

Describes how to install, configure, and troubleshoot ControlLogix digital I/O modules.

Describes how to install, configure, and troubleshoot ControlLogix analog I/O modules.

Describes the guidelines for using ControlLogix controllers in a SIL 2 safety application.

You can view or download publications at http://

www.rockwellautomation.com/literature/. To order paper copies of technical

documentation, contact your local Allen-Bradley distributor or Rockwell Automation sales representative.

14 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Chapter 1

Redundancy System Overview

The 1715 Redundant I/O System lets a ControlLogix controller communicate to a remote, redundant I/O chassis by using EtherNet/IP. The 1715 Redundant I/ O system provides fault tolerance and redundancy for critical processes by using a redundant adapter pair and multiple I/O modules that have diagnostics and are easily replaceable.

The modular architecture lets a system be built and adapted to suit the specific needs of an installation. It lets the user to choose from different levels of adapter and I/O fault protection.

The 1715 Redundant I/O System consists of a single, two-slot, adapter base unit that houses a redundant adapter module pair. The adapter base unit is connected to up to eight I/O base units, that can hold up to 24 I/O modules (three I/O modules per I/O base unit) when connected together. The I/O modules can be configured in any combination of simplex or duplex pairs, depending on the mode of operation needed. The I/O base units can be connected directly to the adapter base unit and other I/O base units, or through expansion cables.

The 1715 Redundant I/O System is a modular system in which the adapter and I/O base units snap together by using mating connectors and retaining clips to form the backplane. Modules can be removed and replaced without system interruption. The base units, via termination assemblies, provide the interconnections for power, adapter, and I/O data. Once connected, the base units form the single, mechanical assembly, or backplane.

Redundant 1715 Adapter Modules

The redundant, partnered adapter modules monitor inputs/outputs and diagnostics for the I/O in the remote chassis. If a fault occurs in one of the redundant adapters, an IP address switchover occurs and I/O monitoring and communication to the ControlLogix System continues without interruption. This switchover is completely transparent to the user. Status indicators and status information available to the ControlLogix application enables you to determine the status of each 1715-AENTR adapter module.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 15

Chapter 1 Redundancy System Overview

1715 I/O Modules

Both digital and analog I/O modules are available for use in this system, depending on your needs. I/O modules can be used singly or in pairs, providing configuration in either Simplex or Duplex modes.

These are the 1715 modules that can be used in this system.

Table 2 - Modules Available for the 1715 Redundant I/O System

Cat. No. Description

1715-AENTR x 2 A pair of Ethernet adapter modules

1715-IB16D A 16-channel digital input module

1715-OB8DE An 8-channel digital output module

1715-IF16 A 16-channel analog input module

1715-OF8I An 8-channel analog output module

1715 I/O Modules in SIL 2 Applications

System Architecture

With the inclusion of diagnostics for the CIP messaging channel, the 1715 Redundant I/O system can be used for SIL 2 safety applications. For information about using a SIL 2 safety applications, see Chapter 6

and Chapter 7.

The 1715 Redundant I/O System operates with a pair of 1715-AENTR adapters.

When designing your control system by using the 1715 Redundant I/O System, you can use digital and analog I/O modules in one of these ways:

• One I/O module in Simplex mode

• One I/O module with the option to add a second module

• A pair of I/O modules that work in Duplex mode

You must decide the layout of your I/O before building your system, but you can add additional I/O at any time.

The use of termination assemblies communicates the I/O mode of operation you choose (Simplex or Duplex) to your system through the backplane (the adapter and I/O base units).

Termination Assemblies

The termination assembly (TA) matches your software configuration for simplex or duplex. Attached to an I/O base, the TA can start in any slot and can span multiple connected bases. When modules are used in Duplex mode, one module can be absent and the system still runs.

16 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Redundancy System Overview Chapter 1

IMPORTANT

Base Unit Structure

The adapter base unit is always the leftmost base unit in the connection chain. The total length of the base unit connection chain, including all expansion cables cannot exceed 10 m (32.81 ft).

A adapter module always occupies slot 0 or 1.

An adapter base unit can support up to 8 I/O base units (up to 24 I/O modules).

1715-AENTR Adapter Modules

The leftmost adapter module position, or slot, is 0. The rightmost adapter module slot is 1. Slots 0 and 1 of the system are always occupied by one redundant adapter module pair, and are designated as ‘A’ for the primary adapter partner and ‘B’ for the secondary adapter partner. This system is designed to run with two adapter modules. It can run with one adapter module for a limited time while replacing a damaged module, but ideally, needs both adapter modules running simultaneously.

There is no method for configuring a system to use only one 1715-AENTR adapter module. If you use only one 1715-AENTR adapter module, the unused module generates errors.

A ‘partner’ adapter module can be installed or removed for replacement, while the 1715 Redundant I/O System is operational. During replacement of the module, there is a one-time, up to a maximum 500 ms, delay to the system.

I/O Modules

I/O module slots are numbered from 2…25, based on distance from the adapter base unit. If duplex I/O module pairs are used, the two modules of the pair must be in adjacent slots. The left, lower slot number is considered the slot number and address for the pair. Any combination of simplex modules and duplex pairs can be used in one or more connected I/O bases units.

A ‘partner’ I/O module can be installed or removed while the 1715 Redundant I/O System is operational, without impact to the rest of the system.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 17

Chapter 1 Redundancy System Overview

TIP

Module Positioning in the 1715 Redundant I/O System

There are 26 total slot positions in the system numbered from 0…25. The first two positions always contain the redundant adapter module pair, in slots 0 and 1. The remaining positions begin numbering at slot 2 and contain the I/O modules, ending at slot position number 25. Any combination of simplex or duplex I/O module pairs can be used in the I/O base units. See Ta b l e 3 system could look like.

Expansion cables can be used to connect base units, as shown in Figure 1 on

page 19.

Table 3 - Example 1 - A Sample System Configuration

for a sample of what a

The sample system configuration in Example 1 does not match the system layout displayed in Example 2. These are different examples of possible configurations you can have for your system.

System Slot Number Base Unit Type Module Position/Slot Number by Base

Unit Type

0 Adapter 0 Adapter A

1 Adapter 1 Adapter B

2 I/O 01 First I/O base unit Module A of first duplex pair

3 I/O 02 Module B of first duplex pair

4 I/O 03 Module A of second duplex pair

5 I/O 04 Second I/O base unit Module B of second duplex pair

6 I/O 05 First simplex module

7 I/O 06 Module A of third duplex pair

8 I/O 07 Third I/O base unit Module B of third duplex pair

9 I/O 08 Second simplex module

10 I/O 09 Third simplex module

11…25 I/O 10…24 Fourth…eighth I/O base unit Any combination of simplex/duplex pair modules

Module Designation

18 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Figure 1 - Example 2 - A Sample System Layout

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

Channel 00

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel 07

Channel 00

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel 07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel 15

Channel 00

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel 07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel 15

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

Channel 00

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel 07

Channel 00

Channel 01

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IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

Module Status

Redundancy Status

Network Status

Rack Status

Ethernet 1

Ethernet 2

Reset

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

Module Status

Redundancy Status

Network Status

Rack Status

Ethernet 1

Ethernet 2

Reset

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

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Run

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32066-M

Redundancy System Overview Chapter 1

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 19

Chapter 1 Redundancy System Overview

1756-RM2

1756-EN2TR

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA

Dual.

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

1715-AENTR

1756-EN2TR

1756-RM2

1715-AENTR

1715-I/O

1756 ControlLogix

Primary Chassis

1756 ControlLogix Secondary Chassis

1756 RM Cable

1715 Redundant I/O

System

45242

Layout the Hardware

This section discusses how to layout the system’s hardware by topology.

System Context

The redundant I/O subsystem must be connected to one ControlLogix redundancy system, or any Logix system that supports I/O via the EtherNet/IP network. All connections are established via the Ethernet network by using the topologies supported by the 1756-EN2T or 1756-EN2TR module, that is, DLR (Ring) or Star.

For additional information about DLR topologies, see the EtherNet/IP Embedded Switch Technology Application Guide, publication ENET-AP005

Figure 2 - 1715 Redundant I/O System DLR (ring) Topology Attached to a 1756 ControlLogix Enhanced Redundancy System

20 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Redundancy System Overview Chapter 1

1756-RM2

1756-EN2T

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA

Dual.

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

1715-AENTR

1756-EN2T

1756-RM2

1715-AENTR

1715-I/O

1756 ControlLogix

Secondary Chassis

1756 ControlLogix

Primary Chassis

1715 Redundant I/O

System

1756 RM Cable

Ethernet

Switch

45239

Figure 3 - 1715 Redundant I/O System Star Topology Attached to a 1756 ControlLogix Enhanced Redundancy System

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 21

Chapter 1 Redundancy System Overview

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

1715-AENTR

1715-IB16D

1715-OB8DE

ADAPTER

O/P

I/P

SENSORS

FINAL

ELEMENTS

1715-

TADOB8DE

1715-

TADIB16D

1715-A2A

1715-A3IO

ControlLogix

CIP NETWORK

Digital Output

Simplex Termination

Assembly

Digital Input

Simplex Termination

Assembly

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Base Unit

I/O Base Units

45241

Simplex Architecture

Simplex I/O modules fail safe on the first detected fault. The process under control shuts down when the fault is detected.

This configuration is suitable for high, as well as low demand module applications.

Figure 4 - Simplex Architecture - Input and Output

22 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Redundancy System Overview Chapter 1

ADAPTER

O/P

I/P

CLX

CIP NETWORK

Duplex Architecture

An example configuration of dual input modules and adapters, and a single output module is shown in Figure 5 module provides fault tolerance for module failures. The duplex arrangement can be used for low demand and high demand applications.

Figure 5 - Duplex Architecture Duplex Inputs, Simplex Output

. A redundant input or redundant output

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 23

Chapter 1 Redundancy System Overview

1715-AENTR

ADAPTER

O/P

I/P

SENSORS FINAL

ELEMENTS

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

1715-IB16D

1715-IF16

I/P

O/P

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

1715-IB16D

1715-IF16

1715-

TADIF16

1715-

TADIB16D

1715-A2A

1715-A3IO

CLX

CIP NETWORK

Figure 6 - Duplex Architecture Inputs and Outputs

Note that termination assemblies can span across I/O base units.

24 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Redundancy System Overview Chapter 1

1715-AENTR

ADAPTER

O/P

SENSORS FINAL

ELEMENTS

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

1715-IB16D

1715-OB8DE

I/P

O/P

IO BASE

1715-A310

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

CH1

TERMINAL IDENTITY

AOTA Dual.

1715-IB16D

1715-OB8DE

1715-

TADOB8DE

1715-

TADIB16D

1715-A2A

1715-A3IO

I/P

O/P

1715-IB16D

FINAL

ELEMENTS

SENSORS

1715-

TASIB16D

1715-

TASOB8DE

1715-OB8DE

CLX

CIP NETWORK

45423

Mixed Architecture

There can be a mixture of architectures within one system. Figure 7 shows simplex and dual I/O configurations with dual processors.

Figure 7 - Mixed Architecture

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 25

Chapter 1 Redundancy System Overview

Bus Diagram

A detailed drawing of the backplane is shown below.

Figure 8 - Bus Diagram of 1715 Redundant I/O System

26 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Redundancy System Overview Chapter 1

Switchover Considerations

Each 1715 Redundant I/O System uses a single IP address as the primary IP address for all communication on the EtherNet/IP network. The redundant adapter module pair consists of two active modules, a primary adapter module and its partner, a secondary module. For the purpose of this document, the primary module is referred to as module ‘A’ and the secondary module is referred to as module ‘B’.

On power-up, the adapter module in the leftmost slot is considered the primary module (when two adapter modules are present) because it uses the primary IP address, and because it is the module responsible for receiving/transmitting to ControlLogix controller on the EtherNet/IP network.

The module in the rightmost slot is considered the secondary module partner and uses the primary IP address +1. For example, if the primary module in the leftmost slot has an IP address of ‘N’, then the secondary module in the rightmost slot, has an IP address of ‘N+1’.

Both modules are active at all times and are responsible for monitoring all inputs and outputs, monitoring diagnostics in the system, and reading and writing data from/to I/O at exactly the same time. When the primary module receives a write, it tells the secondary module the data that is to be written, and to which module it is to be written to. At a synchronized point in time, both adapter modules physically write to the I/O.

The adapter modules negotiate which module is primary, depending on the status of the system. If the primary module is unable to perform its role, for example, if a fault occurs in the primary module, then the secondary module becomes the new primary, assuming the primary module’s IP address, taking over the role of communication. The primary module is the only module of the pair that produces data on the EtherNet/IP network.

In the event of a fault, the IP address swapping between the primary module and the secondary module takes no longer than 20 ms from the time of the initiating fault. The secondary module is the new primary and handles all communication. (Depending on the structure of your Ethernet configuration, this time can be impacted.)

This IP address swap is transparent to the user. The user can detect which module the primary module is by looking at the Network status indicator near the top of each adapter module. On the primary adapter the Network status indicator is solid green; on the secondary adapter, the Network status indicator flashes green.

Once a swap occurs, the ‘new’ primary module remains the primary unless there’s a good reason to swap over again. If the B module becomes the primary module because you need to replace the A module, that is not enough cause to swap IP addresses back again. Module B remains as the primary module.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 27

Chapter 1 Redundancy System Overview

Obtaining a New IP Address

The primary module’s IP address is stored in the adapter base unit through interaction with the TCP/IP object. If a stored primary IP address is available, the adapter uses that address. If a stored primary IP address is not available, then the adapter uses BOOTP/DHCP to obtain an IP address.

The adapter transmits DHCP requests, but is able to process a BOOTP/DHCP response from either a DHCP or BOOTP server. If the BOOTP/DHCP request is unsuccessful, the secondary adapter module (that is, Module B), attempts to obtain the primary module’s IP address through BOOTP/DHCP.

The adapters continue to attempt BOOTP/DHCP configuration until an IP address is obtained, alternating between adapter Modules A and B. Once an adapter module has obtained the IP address, the secondary module can use that IP address + 1.

Once an adapter has a primary IP address, it confirms that it does not have a duplicate IP address. See EtherNet/IP Modules in Logix5000 Control Systems, publication ENET-UM001 Network Status indicator showing solid RED.

. Duplicated IP addresses are displayed by the

For additional information about assigning an IP address for the first time, see Chapter 2, Assign an IP Address on page 111

28 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Redundancy System Overview Chapter 1

Module Status

Redundancy Status

Network Status

Rack Status

Ethernet 1

Ethernet 2

Reset

Ethernet 1

Ethernet 2

Reset

Module A Port 1 Port 2

Module B Port 1 Port 2

Module Status

Redundancy Status

Network Status

Rack Status

Ethernet Topology

The 1715 Redundant I/O System supports DLR (Ring) and Star Topologies.

For a DLR (Ring) Topology, the adapter modules’ Ethernet ports are configured with the outward-facing ports (Port 1 of Module A and Port 2 of Module B) operating as a 2-port switch. Port 2 of Module A and Port 1 of Module B are chained together.

Figure 9 - DLR (Ring) Ethernet Topology

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 29

Chapter 1 Redundancy System Overview

Ethernet 1

Ethernet 2

Reset

Ethernet 1

Ethernet 2

Reset

Module A Port 1 Port 2

Module B Port 1 Port 2

Module Status

Redundancy Status

Network Status

Rack Status

Module Status

Redundancy Status

Network Status

Rack Status

45240

For a STAR Topology, the adapter modules’ Ethernet ports are configured with the leftmost ports (Port 1 of Module A and Port 1of Module B) operating as a 2-port switch. The rightmost ports on each adapter are left unused.

Figure 10 - STAR Ethernet Topology

For Ethernet considerations, see EtherNet/IP Modules in Logix5000 Control Systems, publication ENET-UM001 System, publication 1756-UM535

, and ControlLogix Enhanced Redundancy

Communication on the EtherNet/IP Network

Communication to a simplex module is addressed to the slot number for that module. CIP communication to modules in a duplex configuration (including the adapter modules) are addressed to the lowest slot number for the module pair.

The adapter modules respond with CIP errors for attempts to communicate to an I/O module of a type that is not the same as the physically installed module.

The termination assembly type (simplex/duplex) determines the CIP messages for corresponding CIP objects that the adapter processes for each I/O module.

30 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

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