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

14

14

20

81

88

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

98

150

160

175

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

Table of Contents

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

88

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

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

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

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

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

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

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Module Status

Redundancy Status

Network Status

Rack Status

Ethernet 1

Ethernet 2

Reset

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

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

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

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

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

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

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 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

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 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

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 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

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

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

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA

Dual.

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

1715-AENTR

1756-EN2TR

1756-RM2

1715-AENTR

1715-I/O

1715-I/O

1715-I/O

1715-I/O

1715-I/O

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

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA

Dual.

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

1715-AENTR

1756-EN2T

1756-RM2

1715-AENTR

1715-I/O

1715-I/O

1715-I/O

1715-I/O

1715-I/O

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

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

1715-AENTR

1715-AENTR

1715-IB16D

1715-OB8DE

ADAPTER

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

Adapter

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

ADAPTER

O/P

I/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

1715-AENTR

ADAPTER

ADAPTER

O/P

I/P

SENSORS FINAL

ELEMENTS

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

1715-IB16D

1715-IF16

I/P

O/P

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

1715-IB16D

1715-IF16

1715-

TADIF16

1715-

TADIB16D

1715-A2A

1715-A3IO

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

1715-AENTR

ADAPTER

ADAPTER

O/P

SENSORS FINAL

ELEMENTS

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

1715-IB16D

1715-OB8DE

I/P

O/P

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

1715-IB16D

1715-OB8DE

1715-

TADOB8DE

1715-

TADIB16D

1715-A2A

1715-A3IO

1715-A3IO

I/P

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

Redundancy System Overview Chapter 1

System Performance

This section discusses connections and RPI settings for the 1715 Redundant I/O
System.

Connections

The adapter module has one required connection and does not support a rack
connection.

Each I/O module has one required connection (simplex or duplex).

For example, the system in Figure 11
one is simplex. They are all configured for data connection.

Figure 11 - Duplex and Simplex Connections

has five I/O modules. Four are duplex and

The example in Figure 11 shows six connections; one for each entry in the
configuration.

Table 4 - RSLogix 5000 or Logix Designer Configuration

Connection Module Duplex/Simplex Module Description

1 1715-AENTR Duplex Ethernet Adapter

1 1715-IB16D Duplex 16-point Digital Input

1 1715-OB8DE Duplex 8-point Diagnostic Digital Output

1 1715-IF16 Duplex 16-point Analog Input

1 1715-OF8I Duplex 8-point Analog Digital Input

1 1715-IF16 Simplex 16-point Analog Input

The digital module connections use change-of state-triggers, and the adapter and
analog module connections use cyclic triggers.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 31

Chapter 1 Redundancy System Overview

RPI

The RPI you set specifies the maximum amount of time between data updates.
The 1715 modules support an RPI range of 60…750 ms.

Cat. No. Minimum RPI Maximum RPI Default RPI

1715-AENTR 60 ms 750 ms 180 ms

1715-IB16D 60 ms

1715-OB8DE 60 ms

1715-IF16 120 ms

1715-OF8I 120 ms

Connection and Data Format

The adapter and I/O modules each support a single data connection for input/
output data. Listen Only connections are not supported.

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

Installation Instructions

Top ic Pa ge

Before You Begin 37

System Hardware Components 39

System S oftware 54

Module Placement 55

Install Summary 58

Product Dimensions 59

DIN Rail Assembly 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 I/O Expansion Cable 70

Wire the Adapter 76

Connect Field Wiring 79

Connect the Adapter to the Ethernet Network 102

Module Keying 103

Install the Adapter Modules 107

Assign an IP Address 111

Install the I/O Modules 117

Install Slot Filler Covers 120

Remove Modules 121

Chapter 2

This chapter explains how to build the 1715 Redundant I/O System. These
installation instructions include how to build the backplane by connecting the
adapter and I/O base units and mounting them on DIN rails within a cabinet,
how to install and wire the termination assemblies, how to mount the adapter
and the I/O modules onto the system, and how to use expansion cables to allow
for additional space requirements for the system within an enclosure.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 33

Chapter 2 Installation Instructions

ATTENTION: This equipment is intended for use in a Pollution Degree 2 industrial environment, in overvoltage Category II

applications (as defined in IEC 60664-1), at altitudes up to 2000 m (6562 ft) without derating.
This equipment is not intended for use in residential environments and may not provide adequate protection to radio

communication services in such environments.
This equipment is supplied as open-type equipment. It must be mounted within an enclosure that is suitably designed for

those specific environmental conditions that will be present and appropriately designed to prevent personal injury resulting
from accessibility to live parts. The enclosure must have suitable flame-retardant properties to prevent or minimize the spread
of flame, complying with a flame spread rating of 5VA or be approved for the application if non-metallic. The interior of the
enclosure must be accessible only by the use of a tool. Subsequent sections of this publication may contain additional
information regarding specific enclosure type ratings that are required to comply with certain product safety certifications.

In addition to this publication, see the following:

• Industrial Automation Wiring and Grounding Guidelines, publication

• NEMA Standard 250 and IEC 60529, as applicable, for explanations of the degrees of protection provided by enclosures

Environment and Enclosure

1770-4.1, for additional installation requirements

Prevent Electrostatic Discharge

ATTENTION: This equipment is sensitive to electrostatic discharge, which can cause internal damage and affect normal

operation. Follow these guidelines when you handle this equipment:

• Touch a grounded object to discharge potential static.

• Wear an approved grounding wriststrap.

• Do not touch connectors or pins on component boards.

• Do not touch circuit components inside the equipment.

• Use a static-safe workstation, if available.

• Store the equipment in appropriate static-safe packaging when not in use.

ATTENTION: Do not insert or remove a module, base unit or termination assembly while power is applied. Interruption of

the backplane can result in unintentional operation or machine motion.

ATTENTION: For UL approved installations, the 1715-OB8DE output power source must be isolating, wired with a minimum
of 0.75 mm

2

(18 AWG) wire and fused with a rating of 32V DC min/5 A max.

ATTENTION: Do not wire more than 1 conductor on any single terminal.

ATTENTION: This equipment is not resistant to sunlight or other sources of UV radiation.

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

Installation Instructions Chapter 2

European Hazardous Location Approval

The following applies when the product bears the Ex Marking.

This equipment is intended for use in potentially explosive atmospheres as defined by European Union Directive 94/9/EC and has been found to
comply with the Essential Health and Safety Requirements relating to the design and construction of Category 3 equipment intended for use in
Zone 2 potentially explosive atmospheres, given in Annex II to this Directive.

Compliance with the Essential Health and Safety Requirements has been assured by compliance with EN 60079-15 and EN 60079-0.

WARNING:

• This equipment shall be mounted in an ATEX-certified enclosure with a minimum ingress protection rating of at least IP54

(as defined in IEC60529) and used in an environment of not more than Pollution Degree 2 (as defined in IEC 60664-1) when
applied in Zone 2 environments. The enclosure must have a tool-removable cover or door.

• This equipment shall be used within its specified ratings defined by Rockwell Automation.

• Provision shall be made to prevent the rated voltage from being exceeded by transient disturbances of more than 140% of

the rated voltage when applied in Zone 2 environments.

• This equipment must be used only with ATEX certified Rockwell Automation Termination Assemblies.

• Secure any external connections that mate to this equipment by using screws, sliding latches, threaded connectors, or

other means provided with this product.

• Do not disconnect equipment unless power has been removed or the area is known to be nonhazardous.

• Enclosure must be marked with the following: ‘Warning - Do not open when energized.’ After installation of equipment

into the enclosure, access to termination compartments shall be dimensioned so that conductors can be readily connected.

Multi-point Network Communication Connections

WARNING: If you connect or disconnect the communication cable with power applied to this module or any device on the

network, an electrical arc can occur. This could cause an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding.

Field-side Power

WARNING: If you connect or disconnect wiring while the field-wire power is on, an electrical arc can occur. This could cause

an explosion in hazardous location installations. Be sure that power is removed or the area is nonhazardous before
proceeding.

Removal and Insertion Under Power (RIUP) Fuses

WARNING: If you insert or remove a base unit or termination assembly while power is applied, an electrical arc can occur.

This could cause an explosion in hazardous location installations.
Be sure that power is removed before proceeding.

WARNING: Do not remove or replace fuses when energized. This could cause an explosion in hazardous location
installations.

Be sure that power is removed or the area is nonhazardous before proceeding.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 35

Chapter 2 Installation Instructions

North American Hazardous Location Approval

The following information applies when operating this equipment in hazardous
locations.

Products marked ‘CL I, DIV 2, GP A, B, C, D’ are suitable for use in Class I
Division 2 Groups A, B, C, D, Hazardous Locations and nonhazardous
locations only. Each product is supplied with markings on the rating
nameplate indicating the hazardous location temperature code. When
combining products within a system, the most adverse temperature
code (lowest ‘T’ number) be used to help determine the overall
temperature code of the system. Combinations of equipment in your
system are subject to investigation by the local Authority Having
Jurisdiction at the time of installation.

EXPLOSION HAZARD

• Do not disconnect equipment unless

power has been removed or the area is
known to be nonhazardous.

• Do not disconnect connections to this
equipment unless power has been
removed or the area is known to be
nonhazardous. Secure any external
connections that mate to this equipment
by using screws, sliding latches, threaded
connectors, or other means provided with
this product.

• Substitution of components may impair
suitability for Class I, Division 2.

• If this product contains batteries, they
must only be changed in an area known to
be nonhazardous.

Informations sur l'utilisation de cet équipement en environnements
dangereux.

Les produits marqués ‘CL I, DIV 2, GP A, B, C, D’ ne conviennent qu'à
une utilisation en environnements de Classe I Division 2 Groupes A,
B, C, D dangereux et non dangereux. Chaque produit est livré avec
des marquages sur sa plaque d'identification qui indiquent le code
de température pour les environnements dangereux. Lorsque
plusieurs produits sont combinés dans un système, le code de
température le plus défavorable (code de température le plus faible)
peut être utilisé pour déterminer le code de température global du
système. Les combinaisons d'équipements dans le système sont
sujettes à inspection par les autorités locales qualifiées au moment
de l'installation.

RISQUE D’EXPLOSION –

• Couper le courant ou s'assurer que

l'environnement est classé non
dangereux avant de débrancher
l'équipement.

• Couper le courant ou s'assurer que
l'environnement est classé non
dangereux avant de débrancher les
connecteurs. Fixer tous les
connecteurs externes reliés à cet
équipement à l'aide de vis, loquets
coulissants, connecteurs filetés ou
autres moyens fournis avec ce
produit.

• La substitution de composants peut
rendre cet équipement inadapté à
une utilisation en environnement de
Classe I, Division 2.

• S'assurer que l'environnement est
classé non dangereux avant de
changer les piles.

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

Installation Instructions Chapter 2

IMPORTANT

Before You Begin

This section lists important information you need to consider before starting to
build your 1715 Redundant I/O System:

• Review the parts list and identify the system components.

• Review the power requirements for the system and for field devices.

• Review design considerations for heating and cooling.

• Specify an enclosure.

• Install the necessary software.

Please note that throughout this manual, some graphics do not depict the
actual hardware as required. These graphics are for representational purposes
only and do not necessarily reflect the actual component layout of your system.

Parts List

These parts are available to build a 1715 Redundant I/O System. Their
description and catalog part numbers are as follows.

Table 5 - Par ts Table

Cat. No. Description

1715-AENTR Adapter module

1715-IB16D 16-channel digital input module

1715-OB8DE 8-channel digital output module

1715-IF16 16-channel analog input module

1715-OF8I 8-channel analog output module

1715-A2A 2-slot adapter base unit

1715-A3IO 3-slot I/O base unit

1715-TASIB16D Termination assembly - digital input simplex

1715-TADIB16D Termination assembly - digital input duplex

1715-TASOB8DE Termination assembly - digital output simplex

1715-TADOB8DE Termination assembly - digital output duplex

1715-TASIF16 Termination assembly - analog input simplex

1715-TADIF16 Termination assembly - analog input duplex

1715-TASOF8 Termination assembly - analog output simplex

1715-TADOF8 Termination assembly - analog output duplex

1715-N2T Tall slot filler cover

1715-N2S Short slot filler cover

1715-C2 Expansion cable - 2 m

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 37

Chapter 2 Installation Instructions

IMPORTANT

IMPORTANT

Wireway

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Ethernet 1

Ethernet 2

Reset

Ethernet 1

Ethernet 2

Reset

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Module Status

Redundancy Status

Network Status

Rack Status

Module Status

Redundancy Status

Network Status

Rack Status

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Ethernet 1

Ethernet 2

Reset

Ethernet 1

Ethernet 2

Reset

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Module Status

Redundancy Status

Network Status

Rack Status

Module Status

Redundancy Status

Network Status

Rack Status

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Ethernet 1

Ethernet 2

Reset

Ethernet 1

Ethernet 2

Reset

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

IO BASE
1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Module Status

Redundancy Status

Network Status

Rack Status

Module Status

Redundancy Status

Network Status

Rack Status

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Ethernet 1

Ethernet 2

Reset

Ethernet 1

Ethernet 2

Reset

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

IO BASE
1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Module Status

Redundancy Status

Network Status

Rack Status

Module Status

Redundancy Status

Network Status

Rack Status

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Ethernet 1

Ethernet 2

Reset

Ethernet 1

Ethernet 2

Reset

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Module Status

Redundancy Status

Network Status

Rack Status

Module Status

Redundancy Status

Network Status

Rack Status

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Ethernet 1

Ethernet 2

Reset

Ethernet 1

Ethernet 2

Reset

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

IO BASE
1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel07

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel15

Channel 16

Module Status

Redundancy Status

Network Status

Rack Status

Module Status

Redundancy Status

Network Status

Rack Status

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

15.3 (6.0)

10.2 (4.0)

15.3…20 (6.0…8.0)

10.2 (4.0)

5.1 (2.0)

5.1 (2.0)

15.3 (6.0)

7.7…10.2
(3.0…4.0)

Required Tools

The installation and maintenance of the 1715 Redundant I/O System requires
these tools:

• Screwdriver, 0.8 x 9.0 mm (1/25 x 3/8 in.), for module clamp screws and
slot filler covers

• Torque screw driver, 0.6 x 3.0 mm (1/40 x 1/8 in.), for DC power wiring
terminals

• Torque screwdriver, 0.4 x 2.0 mm (1/64 x 5/64 in.), for field wiring
terminals

• Two open-end wrenches, 10 mm (0.39 in.), for ground stud nuts

• A 2.5 mm (0.10 in.) Allen wrench

Spacing Requirements

You must consider spacing requirements before mounting your system.

Make sure you meet the minimum spacing requirements shown.
Allow 15.3…20 cm (6.0…8.0 in.) between chassis and a heat source, and

chassis and cabinet, and allow 5.1 cm (2.0 in.) between wire way and top or
bottom of chassis.

Dimensions are in cm (in.).

Figure 12 - Cabinet

When installing the system in a chassis, note that chassis are intended to be
mounted horizontally only. The modules are to be installed in the chassis in a
vertical orientation only.

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

Installation Instructions Chapter 2

IMPORTANT

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Ethernet 1

Ethernet 2

Reset

Ethernet 1

Ethernet 2

Reset

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

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Module Status

Redundancy Status

Network Status

Rack Status

Module Status

Redundancy Status

Network Status

Rack Status

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

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 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

Channel 00

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel 07

32065-M

System Hardware Components

The 1715 Redundant I/O System is a remote redundant I/O system developed
to communicate with a Logix controller in a ControlLogix enhanced redundant
system by using the EtherNet/IP network and includes these components:

• A pair of 1715-AENTR adapter modules serve as a ‘proxy’ for all
EtherNet/IP messages to and from redundant I/O modules.

• 1715 digital and analog I/O modules.

• A 1715-A2A dual redundant I/O adapter base unit connects to a

1715-A3I0 I/O module base unit to form the backplane for the system.

• Termination assemblies configured in either Simplex or Duplex mode
mount onto the base units to allow communication between the modules
and the backplane. Each I/O module uses either a simplex termination
assembly or a duplex termination assembly, depending on the mode
needed.

• Each 1715-A3IO I/O base unit holds up to three I/O modules. Up to
24 I/O modules can be added to the system.

• The system is built on DIN rails within a cabinet enclosure.

• 1715-C2 expansion cables can be used to allow for space restrictions of the

system within the cabinet.

Conformal coating is standard on all 1715 modules.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 39

Chapter 2 Installation Instructions

Rack Status

Ethernet 1

Ethernet 2

1715-AENTR

ADAPTER

Reset

Module Status

Redundancy Status

Network Status

32096-M

Do not open this module door, or plug or
insert anything into the port.

32096-M

Rack Status

Ethernet 1

Ethernet 2

1715-AENTR

ADAPTER

Reset

Module Status

Redundancy Status

Network Status

32096-M

Rack Status

Ethernet 1

Ethernet 2

1715-AENTR

ADAPTER

Reset

Module Status

Redundancy Status

Network Status

1715-AENTR Redundant

Adapter Module Pair

IMPORTANT

The general system layout for the 1715 Redundant I/O System consists of the
following hardware components.

1715-AENTR Adapter Redundant Module Pair

The 1715 adapter module communicates via the EtherNet/IP network to a 1756
ControlLogix controller, conveying system I/O data.

Figure 13 - 1715-AENTR Adapter Module

Do not open this module door, or plug or insert anything into the port behind
the module door unless instructed to do so by technical support.

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

Installation Instructions Chapter 2

Healthy

Ready

Run

Channel 00

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel 07

1715-IB16D

DIGITAL INPUT

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

1715-OB8DE

DIGITAL OUTPUT

Healthy

Ready

Run

Channel 00

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel 07

1715-IF16

ANALOG INPUT

Channel 08

Channel 09

Channel 10

Channel 11

Channel 12

Channel 13

Channel 14

Channel 15

Healthy

Ready

Run

Channel 00

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel 07

1715-OF8I

ANALOG OUTPUT

Healthy

Ready

Run

1715-IB16D 16-channel Digital Input

Module

1715-OB8DE 8-channel Digital

Output Module

1715-IF16 16-channel Analog Input

Module

1715-OF8I8 8-channel Analog Output

Module

32092-M

32090-M

32091-M

32089-M

1715 Digital and Analog I/O Modules

Your system can be configured with any combination of I/O modules, and in
either Simplex or Duplex mode. These I/O modules can be included in your
system:

– 1715-IB16D 16-channel digital input module
– 1715-OB8DE 8-channel digital output module
– 1715-IF16 16-channel analog input module
– 1715-OF8I 8-channel analog output module

Figure 14 - 1715 Digital and Analog I/O Modules

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 41

Chapter 2 Installation Instructions

32060-M

1715-A2A Adapter Base Unit

The adapter base unit holds a pair of adapter modules.

Adapter Base Unit Fuses

The 1715-A2A adapter base unit contains four fuses.

To replace the fuses, follow this procedure.

1. Lift the door to access the fuses.

The fuses are labeled from F1…F4, from left to right. The replacement fuse
part number is Littlefuse 0154004.DRT.

2. With a pair of small long-nosed pliers, remove and replace the blown fuse.

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

Installation Instructions Chapter 2

32060-M

Lift door to access fuses

Use replacement fuse four A slow blow fuses in OMNI­BLOK holders manufactured by Littlefuse. Remove and
replace with a pair of long-nosed pliers.

Fuses

Figure 15 - Power Routing of Adapter Base Unit Fuses

Fuses F1 and F3 have independent tags under the 1715-AENTR module
status flags. For example, in Figure 16

, F3 is blown or adapter power is

missing to the PWR-2 connector.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 43

Chapter 2 Installation Instructions

IMPORTANT

Figure 16 - Fuse Tags

1715 I/O modules’ F2 and F4 fusing faults cannot be pinpointed. Any F2 or F4
blown fuse is indicated by all healthy I/O module status indicators showing solid
red.

The adapter tags indicate each individual I/O module tag, ModAFault and
ModBFault, as shown in Figure 17

Figure 17 - Adapter Tags Indicate Faults

.

After any fuse replacement or power-related issue on PWR-1/PWR-2, the Reset
button on the 1715-AENTR must be pressed to clear the fault and reset the
status indicator back to solid green.

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

1715-A3IO I/O Base Unit

32059-M

The I/O base unit holds up to three I/O modules.

Installation Instructions Chapter 2

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 45

Chapter 2 Installation Instructions

I/O Termination Assemblies

I/O termination assemblies are inserted into the I/O base units. There are eight
types of termination assemblies (two for each module) depending on the
architecture of your system and the I/O modules you are going to use.

Table 6 - I/O Termination Assembly Descriptions

I/O Module Termination Assembly Cat. No. Termination Assembly Description

1715-IB16D 1715-TASIB16D Digital input simplex

1715-TADIB16D Digital input duplex

1715-OB8DE 1715-TAS0B8DE Digital output simplex

1715-TADOB8DE Digital output duplex

1715-IF16 1715-TASIF16 Analog input simplex

1715-TADIF16 Analog input duplex

1715-OF8I 1715-TASOF8 Analog output simplex

1715-TADOF8 Analog output duplex

Digital Input Termination Assemblies

Digital input termination assemblies support these features:

• 16-channel simplex TA provides termination for 16 digital input channels

• Industry-standard field device connections at terminal blocks

• 24V DC digital input channels with a load of 5.11 k

per input channel

• Individually fused channels with over voltage input protection

There are two types of digital input termination assemblies:

• A 1715-TASIB16D, 16-channel simplex TA that provides termination for
16 digital input channels and mates with a single 1715-IB16D digital
input module

• A 1715-TADIB16D, 16-channel duplex TA that provides termination for
16 digital input channels and mates with up to two 1715-IB16D digital
input modules

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

Installation Instructions Chapter 2

1616

1616

FH1FH1

FH2FH2

FH3FH3

FH4FH4

FH5FH5

FH6FH6

FH7FH7

FH8FH8

FH9FH9

J1J1

TB1TB1

TB2TB2

J2J2

FH10FH10

FH11FH11

FH12FH12

FH13FH13

FH14FH14

FH15FH15

FH16FH16

FH1FH1F1

OVOV

OVOV

CH0CH0

CH1CH1

CH2CH2

CH3CH3

CH4CH4

CH5CH5

CH6CH6 CH7CH7

CH8CH8 CH9CH9

CH10CH10CH11CH11

CH12CH12

CH13CH13

CH14CH14 CH15CH15

1

a

c

c

b

1

a

c

c

b

1715-TASIB16D

Digital Input Simplex

Termination Assembly

1715-TADIB16D

Digital Input Duplex

Ter mi nat ion As semb ly

32120-M

32095

Fuse Type: Littlefuse No. 396/TE5 50 mA Timelag Fuse; UL 248-14, 125V, T Leadfree for Digital Input Termination Assemblies. Remove and replace fuses with a pair of
long-nosed pliers.

Terminal Block Cable Entry This Side

Fuse Cover

Polar ization Pin s

Field Connections This Side

Fuse
Covers

Polar izati on
Pins

Figure 18 - 1715-TASIB16D and 1715-TADIB16D Digital Input Termination Assemblies

Fuse

CH0 CH1 CH2 CH3 CH4CH5 CH6CH7 CH8CH9

Channel -

Channel +

TB1 TB2

Fuse
Holder

FS1 FS3 FS5 FS7

FS2

FS4 FS6 FS8

J1

cc cc

16

J2 J4

16 16 16

11 11

FS9 FS11 FS13 FS15

FS10 FS12 FS14 FS16

CH10CH11CH12CH13CH14CH15

J3

32120 -M

The simplex termination assembly routes the input signals to one input module.
In duplex arrangements, the input signals are routed to two parallel modules.

See page 86

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 47

for detailed wiring instructions.

Chapter 2 Installation Instructions

TEST

Ov V1+ Ov V2+ Ov V1+ Ov V2+

CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7

TB1 TB2 TB3 TB4

J1

FH1 FH2

1715-TADOB8DE
Digital Output Duplex
Ter mi nat ion As semb ly

1715-TASOB8DE

Digital Output Simplex

Ter mina tio n Ass embl y

32121-M

32093-M TA

10 A Fuse

Fuse type: Littlefuse Type 451 Omni-Block 10 A, 125V very fast acting fuse. Surface Mount Fuse Block 154 010 for Digital Ouptut Termination Assemblies. Use a pair of
long-nosed pliers for fuse removal and replacement.

Field Connections Entry This Side

Field Connections This Side

Polariza tion Pin s

10 A Fuse

Digital Output Termination Assemblies

Digital output termination assemblies support these features:

• Provide connections for eight output channels

• Industry-standard field device connectors

• 24V DC operation

• Provide a fused field voltage supply to the module

There are two types of digital output termination assemblies:

• A 1715-TASOB8DE digital output, 24V DC, 8-channel, simplex TA that
provides termination for 8 digital output channels and mates with a single
1715-OB8DE digital output module

• A 1715-TADOB8DE digital output, 24V DC 8-channel duplex TA that
provides fault tolerant operation for 8 digital output channels and mates
with redundant 1715-OB8DE digital output modules

Figure 19 - 1715-TASOB8DE and 1715-TADOB8DE Digital Output Termination Assemblies

Ov

V1+ Ov V1+Ov V2+ Ov V2+

CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7

TB1 TB2 TB3 TB4

FH1

J1 J2

cc

FH2

Pola rizati on
Pins

32121 -M

See page 91 for detailed wiring instructions.

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

Installation Instructions Chapter 2

CH0 CH1 CH2 CH3

CH4 CH5 CH6 CH7 CH8 CH9

CH10 CH11 CH12 CH13 CH14 CH15

1715-TASIF16

Analog Input Simplex

Termination Assembly

1715-TADIF16

Analog Input Duplex

Termination Assembly

32094 AI SIMPLEX TA

32120-M

Fuse Type: Littlefuse No. 396/TE5 50 mA Timelag Fuse; UL 248-14, 125V, T Leadfree for Analog Input Termination Assemblies. Use a pair of long-nosed pliers for
fuse removal and replacement.

Terminal Block Cable Entry This Side

Fuse Cover

Polarizi ng Pins

Polar izing

Pins

Fuse Covers

Field Connections This Side

Analog Input Termination Assemblies

Analog input termination assemblies support these features:

• 16 input channels for a simplex/duplex configuration

• Industry-standard field device connections at the terminal blocks

• Analog input channels with a high reliability 120

termination per input channel

• Individually-fused channels with over voltage input protection

There are two types of analog input termination assemblies:

• A 1715-TASIF16, 16-channel simplex TA that provides termination for
16 single-ended analog input channels and mates with a single 1715-IF16
16-channel analog input module

• A 1715-TADIF16, 16-channel duplex TA that provides termination for 16
isolated analog input channels and mates with up to two 1715-IF16
16-channel analog input modules

precision resistor

Figure 20 - 1715-TASIF16 and 1715-TADIF16 Analog Input Termination Assemblies

Fuse

CH0 CH1 CH2 CH3 CH4CH5 CH6 CH7 CH8CH9

Channel -

Channel +

TB1 TB2

Fuse
Holder

FS1 FS3 FS5 FS7

FS2

FS4 FS6 FS8

J1

cc cc

16

J2 J4

16 16 16

CH10CH11CH12CH13CH14CH15

FS9 FS11 FS13 FS15

FS10 FS12 FS14 FS16

J3

11 11

See page 99 for detailed wiring instructions.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 49

32120 -M

Chapter 2 Installation Instructions

IMPORTANT

Analog Output Termination Assemblies

Analog output termination assemblies support these features:

• Eight output channels for a simplex/duplex configuration

• Industry-standard field device connections at the terminal blocks

• Analog output channels provide 4…20 mA DC for external field devices

• Duplex termination assembly provides increased fault tolerance for output

channels

There are two types of analog output termination assemblies:

• A 1715-TASOF8, 8-channel simplex TA that provides termination for 8
single-ended analog output channels and mates with a single 1715-OF8I 8

-channel analog output module

• A 1715-TADOF8, 8-channel duplex termination assembly provides fault
tolerant operation for 8 analog output channels through inter-module
communication and by routing the output source current from two
modules to the same field device

The dual termination assembly does this by supporting inter-module
communication for current sync operation and by routing the channel outputs
from two 8-channel analog output modules in parallel to 8 field device.
Therefore, each field device receives a current source from a channel on each of
two modules. So if one module fails, or one or more channels fail on a module,
the outputs from the second module continues to supply the field devices.

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

Installation Instructions Chapter 2

J1 J2

cc

CH0 1 2 3 4 5 6 7

CH

LOOP-

DAOTA
PCB130861 REV A

LOOP+

TB1

J1 J2 J4

J3

01

TB2

23

TB3

45

TB4

67

1715-TASOF8

Analog Output Simplex

Termination Assembly

1715-TADOF8
Analog Output Duplex
Termination Assembly

32122-M

32123-M

Figure 21 - 1715-TASOF8 and 1715-TAD0F8 Analog Output Termination Assemblies

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 51

Chapter 2 Installation Instructions

32086-M

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Ethernet 1

Ethernet 2

Reset

Ethernet 1

Ethernet 2

Reset

Rack Status

Module Status

Redundancy Status

Network Status

Rack Status

Module Status

Redundancy Status

Network Status

Slot Filler Covers

32078-M

1715-C2 Expansion Cable

A 2 m (6.56 ft) expansion cable is available to connect I/O modules to field
devices, and to allow for space restrictions within the system’s enclosure.

1715-N2T and 1715-N2S Slot Filler Covers

Slot filler covers are available in two sizes to cover empty slots in your system. Use
the tall cover (catalog number 1715-N2T) when no termination assembly is
present. Use the short cover (catalog number 1715-N2S) when a slot has a
termination assembly, but no module.

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

Installation Instructions Chapter 2

IMPORTANT

Power Requirements

A 24V DC power supplied is required. See Install the Power Supply on page 63
for complete details.

ATT EN TI ON : To comply with the CE Low Voltage Directive (LVD), all connections
to this equipment must be powered from a source compliant with the
following:

– Safety Extra Low Voltage (SELV) or Protected Extra Low Voltage (PELV)

Cooling Requirements

The 1715-AENTR adapter module is designed to operate in its specified
environment without forced air cooling. Forced air cooling can be needed in
individual circumstances, such as when the system shares its enclosure with other
heat producing equipment.

Adequate ventilation must be provided for the system and the ambient
temperature in the enclosure must not be higher than the maximum operating
value of 60 °C (140 °F).

The adapter module dissipates all of the power it uses as heat. This is the power
supplied to the terminals on the 1715-A2A adapter base unit. The I/O modules
dissipate some of the power they take from the field power source as heat. The
actual amount of heat depends on the number of channels in use.

Cooling by Convection: For correct cooling of the equipment, fit the base units
in the vertical plane and orientate so the modules are upright, with their
ventilation slots at the top and bottom.

The 1715-AENTR adapter module is open-type equipment that is rated IP20.
This provides protection against solid objects over 12 mm (0.47 in.), but does not
provide protection against liquids.

Heating Requirements

If enclosure is in colder environments, temperatures must be kept at

-20 °C (-4 °F) or above.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 53

Chapter 2 Installation Instructions

IMPORTANT

IMPORTANT

Specify an Enclosure

An enclosure for the 1715 Redundant I/O System must be designed for the
specific environmental conditions that are present. It needs to support the weight
of the system, provide mechanical protection and remove the heat that the system
creates. If the application of the adapter module is not using existing power
sources, the power supply units can be placed inside the enclosure.

ATTENTION: The modules contain static-sensitive devices that can be
damaged by incorrect handling. Label the exterior surface of the enclosure
to caution personnel to observe anti-static precautions when handling the
modules.

System Software

Install this software for your 1715 Redundant I/O System:

• RSLogix 5000 programming software, version 19 or later, or Studio 5000
environment, version 21 or later

• 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

• ControlFLASH revision 2.001

• Adapter Add-on Profile at:

Product Compatibility and Download Center

• I/O Modules Add-on Profile

Product Compatibility and Download Center

The adapter ships with factory boot firmware and must be updated before use.
The I/O modules are flashed with the correct firmware.

website

website

You must ensure that there are no active connections to the 1715 chassis
before performing a firmware update.

After upgrading a revision 1.005 1715 chassis to revision 2.001 or later, power
to the 1715 chassis must be cycled.

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

Installation Instructions Chapter 2

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA

Dual.

Ethernet 1

Ethernet 2

Reset

Ethernet 1

Ethernet 2

Reset

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

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Module Status

Redundancy Status

Network Status

Rack Status

Module Status

Redundancy Status

Network Status

Rack Status

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

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 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

Channel 00

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel 07

1

4

2

3

5

6

7

8

9

10

11

32065-M

12

13

TIP

Module Placement

A general overview of a typical redundant I/O system layout is shown here.

This illustration is only an example and is for illustrative purposes only.

Item Description

1 Adapter base unit

2 Adapter A module

3 Adapter B module

4I/O base unit

5 Simplex I/O module

6 Duplex I/O module - first in pair

7 Duplex I/O module - second in pair

8I/O base unit

9 Simplex I/O module

10 Duplex I/O module - first in pair

11 Duplex I/O module - second in pair

12 Power connections

13 Ethernet connections

The adapter and base units are DIN-rail mounted and connections are chained
together from left to right.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 55

Chapter 2 Installation Instructions

Base Units

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

A base slot (adapter or I/O) consumes an address whether it is full or empty. The
first adapter in the pair occupies slot 0 and is on the left, the second adapter
occupies slot 1 and is on the right. Only adapters can occupy the slots of the
adapter base.

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

Module positions within the I/O base units are numbered from 2…25, the
leftmost position being slot 2.

The total number of slot positions in the system is 26; 0…1 are occupied by
adapters and 2…25 are occupied by I/O modules.

Expansion cables can be used to connect base units, as shown here.

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

Figure 22 - Example System Layout

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

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

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA

Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA

Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

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

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA

Dual.

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA

Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Module Status

Redundancy Status

Network Status

Rack Status

Ethernet 1

Ethernet 2

Reset

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA

Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

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

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

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

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

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

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 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

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 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

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 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

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

32066-M

Installation Instructions Chapter 2

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 57

Chapter 2 Installation Instructions

IMPORTANT

Install Summary

The 1715 Redundant I/O System is a modular system. The adapter and I/O base
units snap together by using mating connectors and retaining clips to form the
backplane.

The base units provide the interconnections for power, adapter, and I/O data.
Once connected, the base units form a single, mechanical assembly, or backplane.

The insertion and removal of modules does not disturb the electrical
connections with field devices.

Step 1: Enclosure DIN Rail Assembly

The 1715 Redundant I/O System is assembled on DIN rails within an enclosure.

After deciding on an enclosure, install the DIN rails prior to building your
system.

Step 2: Build the System

After assembling the DIN rail enclosure, follow these steps in this order to build
your redundant I/O system.

1. Mount a 24V, user-supplied, power supply.

Refer to the instructions that came with the power supply.

2. Mount the adapter base unit onto the DIN rails.

3. Mount the I/O base units onto the DIN rails.

4. Insert retaining clips to connect adapter and I/O base units.

5. Install anchor end stops onto the DIN rails.

6. Mount termination assemblies to the base units.

7. Mount I/O expansion cable, if needed.

8. Wire the adapter base.

• Connect to power.

• Wire the ground.

• Connect to field wiring.

9. Connect the adapter to the Ethernet network.

10. Module keying/verify coding peg positions.

11. Install the adapter redundant module pair.

12. Install the I/O modules.

13. Install slot filler covers over unused slots.

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

Installation Instructions Chapter 2

IMPORTANT

IMPORTANT

IO BASE

1715-A310

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Module Status

Redundancy Status

Network Status

Rack Status

Ethernet 1

Ethernet 2

Reset

Ethernet 1

Ethernet 2

Reset

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

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

CH1

CH1

CH1

CH1

CH1

CH1

CH1

CH1

TERMINAL IDENTITY

AOTA
Dual.

Healthy

Ready

Run

Module Status

Redundancy Status

Network Status

Rack Status

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

Healthy

Ready

Run

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 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

Channel 00

Channel 01

Channel 02

Channel 03

Channel 04

Channel 05

Channel 06

Channel 07

32058-M

46 mm

(1.81 in.)

101 mm

(3.98 in.)

Each Base Unit (Two Shown) Occupies

126 mm (4.96 in.) Width

233 mm

(9.17 in.)

Product Dimensions

Allow sufficient free space around the base units. Every installation needs space on at least three sides, as follows:

• Space above, to manipulate and install field wiring

• Space below, to enable modules to fit and to be able to grasp a module during removal

• Space to the right, to maneuver an I/O base unit during assembly or in the event of installing a new base unit

Minimum clearance between the product and the adjacent equipment must be 15.3…20 cm (6.0…8.0 in.) between
chassis and a heat source, and allow 5.1 cm (2.0 in.) between wire way and top or bottom of chassis.

This section outlines the space requirements needed for your 1715 Redundant
I/O System.

DIN Rail Mounting Dimensions

The system requires free space of at least 140 mm deep (5.51 in.) from front to
back between the rear panel of an enclosure and the inside of an enclosure door.

DIN rail mounting is shown below.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 59

Chapter 2 Installation Instructions

32067-M

DIN Rail Assembly

The 1715 Redundant I/O System is mounted on DIN rails within an enclosure.
Pay special attention to dimensions needed for base unit placement.

For each pair of DIN rails, mount the lower rail with its center line 101 mm
(3.98 in.) below the center line of the upper rail.

Free space must also be provided on each end of the DIN rail for the end stops, if
required.

Component Size and Weights

Table 7 - Component Sizes

Item Size (H x W x D)

Adapter base unit 224 x 84 x 30 mm (8.82 x 3.31 x 1.18 in.)

I/O module base unit 233 x 126 x 18 mm (9.25 x 5 x .75 in.)

Module 166 x 42 x 118 mm (6.5 x 1.625 x 4.625 in.)

The total depth of a base unit and module is 136 mm (5.375 in.).

Figure 23 - Module Dimensions

All module dimensions are the same, whether they are adapter modules or I/O
modules.

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

Figure 24 - System Dimensions

32068-M

84 mm

(3.31 in.)

Installation Instructions Chapter 2

126 mm
(4.96 in.)

237 mm

9.33 in.)

233 mm

(9.17 in.)

237 mm

9.33 in.)

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 61

Chapter 2 Installation Instructions

Be sure that the mounting assembly can support the weight of the components by
using this table.

Table 8 - Component Weights

Cat. No. Component Weight g (oz)

1715-A2A Adapter base unit 283 (9.98)

1715-A3IO I/O base unit 220 (7.76)

1715-AENTR Adapter module 420 (14.82)

1715-IB16D Digital input module 360 (12.70)

1715-IF16 Analog input module 360 (12,70)

1715-OB8DE Digital output module 290 (10.23)

1715-OF8I Analog output module 340 (11.99)

1715-TASIB16D Digital input simplex termination assembly 133 (4.69)

1715-TADIB16D Digital input duplex termination assembly 260 (9.17)

1715-TASIF16 Analog input simplex termination assembly 133 (4.69)

1715-TADIF16 Analog input duplex termination assembly 260 (9.17)

1715-TASOB8DE Digital output simplex termination assembly 133 (4.69)

1715-TADOB8DE Digital output duplex termination assembly 260 (9.17)

1715-TASOF8I Analog output simplex termination assembly 133 (4.69)

1715-TADOF8I Analog output duplex termination assembly 260 (9.17)

1715-N2S Short blank slot filler 40 (1.41)

1715-N2T Tall blank slot filler 50 (1.76)

Power supply User-supplied Varies

(1)

(1) All weights are approximate.

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

Installation Instructions Chapter 2

Power Supply

32070-M

Install the Power Supply

Power supplies must be installed to the left of the adapter base unit in a position
where the 24V DC supply wiring can be kept reasonably short. Figure 25

shows

an example of a mounted power supply.

ATT EN TI ON : To comply with the CE Low Voltage Directive (LVD), all connections
to this equipment must be powered from a source compliant with the
following:

– Safety Extra Low Voltage (SELV) or Protected Extra Low Voltage (PELV)

Figure 25 - Power Supply

The 1715 Redundant I/O System requires 24V DC power with a tolerance
between 18…32V DC. The system has been designed to operate with most
commercially available industrial uninterruptable power supplies (UPS). To
select a suitable power supply, calculate the overall system load that must be
powered (by using the table below), include any additional devices and add a
contingency allowance between 25…50%.

Component Power Requirement

Adapter module 8.0 W

Digital input module 4.0 W

Analog input module 4.0 W

Digital output module 3.0 W

Analog output module 3.6 W

Power supply Vari es

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 63

Chapter 2 Installation Instructions

Adapter Base Unit

Retaining Lever

DIN Rails

45246

Install the Adapter Base Unit

The adapter base unit supports a pair of adapter modules. The adapter base unit
has connections for two power feeds, four Ethernet ports, and two adapter
modules on the front of the unit, and a single I/O base connector on the right­hand side of the unit. The connections for the adapter modules are commonly
referred to as adapter module slots.

To mount the 1715-A2A adapter base unit, follow these steps.

1. Place the 1715-A2A adapter base unit onto the DIN rails and position
them toward the left, leaving space for the I/O base units to the right.

2. Secure the adapter base unit onto the DIN rails by sliding the retaining
lever (below the base unit) to the left, as far as it goes, until it latches in the
locked position.

Install the I/O Base Unit

You can install up to three I/O modules on an I/O base unit. The I/O base unit
has an incoming I/O base connector on the left-hand side of the unit, an
outgoing I/O base connector on the right-hand side, and, on the front,

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

Installation Instructions Chapter 2

Adapter Base Unit

I/O Base Unit

Retaining Clip

Retaining Clip

DIN Rails

Retaining Lever

Mating

Connector

Retaining Lever

45247

connections for three I/O termination assemblies and three I/O modules. The
locations for each I/O termination assembly and I/O module connectors are
paired, and together represent an I/O module slot.

To mount the 1715-A3IO base unit, follow these steps.

1. Mount each 1715-A3IO base unit onto the DIN rails to the right of the
1715-A2A adapter base unit.

2. Slide the base unit to the left until the joining connectors are fully mated.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 65

3. Secure the I/O base unit onto the DIN rails by sliding the bottom
retaining lever (below the base unit) as far to the left as it goes until it
latches in the locked position.

4. Insert the retaining clips into the top and the bottom slots to connect the
adapter base unit to the I/O base unit.

Chapter 2 Installation Instructions

I/O Base Unit

Retaining Clip

Retaining Clip

DIN Rails

Retaining Lever

Mating

Connector

45247

32087-M

32088-M

Typical types of end stops.

5. Attach anchor end stops to the top of the DIN rails once all of the base
units are mounted.

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

Installation Instructions Chapter 2

Install Termination Assembly to I/O Base Unit

I/O termination assemblies determine the type of I/O modules that can be
installed in a particular slot. The I/O termination assemblies provide the
mechanism to connect the field wiring specific to the I/O module type to the
back of one or more installed I/O modules. I/O termination assemblies are
available in single-width and double-width varieties. A single-width I/O
termination assembly connects the field wiring to a single I/O module slot for
simplex operation, where a double-width I/O termination assembly connects the
field wiring to two I/O module slots for duplex/redundant operation. I/O
termination assemblies can span I/O base unit boundaries, though the I/O base
units must be connected directly. I/O termination assemblies are keyed so that
only I/O modules appropriate to the termination assembly type can be installed.

Each redundant I/O subsystem supports a maximum of 24 I/O module slots,
which can be configured with 24 simplex I/O termination assemblies, 12 duplex
I/O termination assemblies, or any combination in between.

Once the base units and termination assemblies have been installed, the insertion
and removal of modules does not disturb other electrical connections.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 67

Chapter 2 Installation Instructions

32061-M

Mount Termination Assemblies

Termination assemblies connect to I/O base units. You can fit three simplex
assemblies, or one duplex and one simplex assembly. The combination used
depends on your system’s specific configuration requirements.

To connect termination assemblies to I/O base units, follow these steps.

1. Insert the termination assembly (TA) retaining clip on the back of the
termination assembly into the slot on the I/O base unit.

2. Press in and slide the assembly upward as far as it goes until it locks in
place.

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

Installation Instructions Chapter 2

32061-M

3. Make sure the retaining tab clips over the circuit board to secure the TA in
position.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 69

Chapter 2 Installation Instructions

32080-M

Mount I/O Expansion Cable

The expansion cable assembly connects an I/O base unit to another I/O base
unit or to the adapter base unit. It lets extra I/O to be added at a different
location (for example, on a different DIN rail). The cable is 2 m long and
provides connection for up to 24 I/O modules. The maximum length of an entire
bus, or backplane, (the combination of I/O base units and expansion cables) is 10
m.

The assembly consists of a cable, terminated by multi-way plugs, and a pair of
adapters.

The expansion cable offers these features:

• Two -m eter ca ble le ng th

• Secure with retaining screws and screw cap screws

• Connects all command and response signals and system power

• Screened to reduce emissions

For additional information on pin-out and pin allocations, see 1715 Redundant
I/O System Technical Data, publication 1715-TD001

.

Cable Assembly

The cable assembly is made up of a SCSI-3 cable and two ferrites. The ferrites are
snap-on components that reduce resonance emissions.

Fit the ferrites 50 mm (1.97 in.) from each end and secure with cable ties either
side of the ferrites.

Table 9 - Cable Assembly

Item Description

1 SCSI-3 cable

2 Ferrite

3 Cable-tie

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

Installation Instructions Chapter 2

Cable Adapter

32086-M

Cable Adapter

TIP

Expansion Cable

The expansion cable has a left cable adapter and a right cable adapter. Connect
one end to the right-hand bus connector of an I/O base (or adapter base) unit.
The other end connects to the left-hand bus connector of an I/O base unit.

Figure 26 - I/O Expansion Cable Adapters

Item Description

1Cable socket assembly

2SCS1-3 cable

3 Ferrite

4 Cable plug assembly

Expansion cables are available in 2 m (78.74 in.) lengths.

Terminators are not required at the end of the bus (last base unit).

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 71

Chapter 2 Installation Instructions

32081-M

IMPORTANT

Install Expansion Cable

To install an expansion cable, follow these steps.

Table 10 - Expansion Cable Components

Item Description

1 M3 socket cap screw

2 Cable plug assembly

3 Cable socket assembly

4M3 nut

Adapter base units can only be extended from the right side.

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

Installation Instructions Chapter 2

32081-M

32081-M

Connect to a 1715-A3IO 3-slot I/O Base Unit

1. To extend from the right-hand side of an I/O base unit, insert a cable plug
assembly into the I/O backplane connector.

2. When installing the cable on the left side of the base unit, insert a cable
socket assembly into the I/O backplane connector.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 73

Chapter 2 Installation Instructions

32081-M

32081-M

3. Insert an M3 nut into the base unit molding assembly as shown.

4. Secure the plug or socket assembly by inserting the two M3 socket cap

screws.

5. Tighten the screws with a 2.5 mm Allen wrench.

6. Install the cable end into the plug or socket assembly and tighten the

retaining screws by hand.

7. Fit the cable plug or socket assembly to the other I/O base unit and secure
as in steps 3

and 4 above.

8. Fit the other end of the cable into the cable plug or socket assembly.

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

Installation Instructions Chapter 2

Extending from
right hand side

3

2

3

4

1

2

3

4

1

2

32082-M

Cable Plug Assembly

M3 Socket Cap Screw

M3 Socket Cap Screw

M3 Nut

32060-M

Connect cable plug assembly to
the adapter base connector.

Adapter Base Connec tor

Connect to a 1715-A2A 2-slot Adapter Base Unit

1. When installing the expansion cable from the right-hand side, insert a
cable plug assembly into the 1715-A2A adapter base unit connector.

2. Follow steps 3

, 4, and 5 above.

3. Insert the cable end into the cable plug assembly and tighten the retaining
screws by hand.

4. Fit the cable socket assembly to the I/O base unit and secure as in steps 4

above.

and 5

5. Fit the other end of the cable into the cable socket assembly.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 75

Chapter 2 Installation Instructions

Pwr1

Pwr2

+24V DC +24V DC

C

o
m
m

o

n

C

o
m
m

o

n

32065-M1

Wire the Adapter

The 1715 adapter base unit has a series of screw terminal blocks to terminate
power connections to ease cable installation.

Connect the 24V DC System Power

The 1715 modules are designed to operate from two independent 24V DC
sources with a common return. Power is connected to the two plugs, ‘PWR-1’
and ‘PWR-2’ on the adapter base plate. Power is distributed to the I/O modules
through the base units.

Figure 27 - Connect System Power

ATT EN TI ON : To comply with the CE Low Voltage Directive (LVD), all connections

to this equipment must be powered from a source compliant with safety extra
low voltage (SELV) or protected extra low voltage (PELV)

ATT EN TI ON : To comply with UL restrictions, all connections to this equipment
must be powered from a UL Listed source compliant with Limited Voltage/

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

Current per UL 508.

Installation Instructions Chapter 2

MP-PWR-24V1

OV

MP-PWR-24V2

OV

32125-M

PWR 1

PWR 2

For each power supply connection, follow these steps.

1. Connect the negative line from the power supply, typically labelled ‘OV’,
to the left-hand terminal.

2. Connect the positive line from the power supply, typically labelled ‘+24V’,
to the right-hand terminal.

3. Apply a minimum tightening torque of 0.5 N•m (0.37 lb•ft) to the
terminal screws.

Table 11 - Module Power Wiring Sizes

Wiring Attribute Size

2.5 mm

2

(12 AWG)

2

(12 AWG)

Conduc tor cross section, stranded maximum 2.5 mm

Conduc tor cross section, solid maximum

Stripping length 7 mm (9/32 in.)

For maximum protection, be sure that the PWR-1 and PWR-2 plugs are supplied
from independent 24V DC sources as in Figure 28

. Only having one power
supply plug connection causes a Rack Status fault status indicator to illuminate
on adapter modules.

Figure 28 - Independent Power Sources

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 77

Chapter 2 Installation Instructions

MP-PWR-24V1

OV

MP-PWR-24V2

OV

32125-M

AC Ground Connection Only

Wire the Ground Connection

The system can have up to three separate ground systems:

• An AC Safety Ground (sometimes called the ‘dirty ground’) to protect
you in the event of a fault. The ground stud on the adapter base unit must
be connected to the AC safety ground, along with all exposed metalwork,
such as DIN rails.

• An Instrument Ground (sometimes called the ‘clean ground’ or ‘OV DC
ground’) to provide a good stable OV reverence for the system. Every
signal return must be referenced to the instrument ground, which is
isolated from the AC Safety Ground.

• Some field wiring needs shielded (screened) cable. There can be a Shield
Ground in addition to the AC Safety and Instrument Grounds to provide
a common point to terminate cable shields.

Connect the adapter base unit ground stud to the AC safety ground bus bar of
the system:

• Use an M6 lug on the end of the ground wire.

• Place the lug below the second nut on the ground stud between two

washers and use two 10 mm (.039 in.) wrenches to tighten the nuts.

2

• Use a minimum conductor wire size of 4 mm

(10 AWG).

Figure 29 - Adapter Base Unit Ground Connection Detail

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

Installation Instructions Chapter 2

IMPORTANT

IMPORTANT

Connect Field Wiring

Connect the field wiring to the screw terminal blocks on the termination
assemblies.

The termination assemblies have integral fuses.

You must use safety wiring principles if the applicable standards for the system
require you take precautions to avoid external short circuits, because the
internal diagnostics in the 1715 adapter do not detect external short circuits
between channels. These standards include NFPA-72.

ATT EN TI ON : To comply with the CE Low Voltage Directive (LVD), all connections
to this equipment must be powered from a source compliant with safety extra
low voltage (SELV) or protected extra low voltage (PELV).

ATT EN TI ON : To comply with UL restrictions, all connections to this equipment
must be powered from a UL. Listed source compliant with Limited Voltage/
Current per UL 508.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 79

Chapter 2 Installation Instructions

DC

5.11

33113-M

Recommended Circuits for Digital Inputs

These circuits can be used for simplex and duplex configurations of digital input
modules. Fit a fuse in each circuit to protect the field wiring.

Figure 30 - Standard Input

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

Figure 31 - Line Monitored Inputs

DC

5.11

32114-M

Installation Instructions Chapter 2

Threshold Settings for Line Monitored Field Devices

For information about setting threshold values, see Threshold Values for Digital

Inputs on page 271.

It is recommended that you do a manual calibration drift check every two years.
See Calibration Drift Checks

on page 283 .

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 81

Chapter 2 Installation Instructions

Channel 0

Channel 1

Channel 2

Channel 3

Channel 4

Channel 5

Channel 6

Channel 7

Field
Inputs

Termination
Assembly

Dual
Redundant
System
Power

SYS_24V1

SYS_24V2

SYS_OV

Dual Input
Measurement
Device

Isolated
Power
Supply

Over/Under
Voltage
Protection

PWR

Power
Valid

Isolator

PWR
CMD
RES

PWR
CMD
RES

PWR
CMD
RES

PWR
CMD
RES

PWR
CMD
RES

PWR
CMD
RES

PWR
CMD
RES

Dual Input
Measurement
Device

Isolator

PWR
CMD
RES

PWR

CMD

Input Data

Data Management
FPGA

PWR

Power
Valid

SPI
Flash

PMA Commands
PMB Commands
PM Commands

I/O Command Bus

Response Bus

Front Panel
LEDS

I/O Backplane

Input Data

Module Status

Channel Status

32106-M

Typ ica l Cir cui t

1715-IF16 Digital Input Module Functional Block Diagram

Figure 32 - 1715-IF16 16-channel Module Functional Block Diagram

Figure 32 provides a Function Block Diagram of the 1715 digital input module

illustrating the input circuits, isolation circuits, internal power supplies and the
input data management by the FPGA. Each input signal is routed through a
termination assembly to two input measurement devices. These devices
determine the input status and channel condition and generate the input data for
the ControlLogix controller.

The digital input module receives commands from the adapter module and
converts the channel input data into secure digital data packets. Signal power and
isolation circuits separate out each input channel from the rest of the system and
protect the system components from field faults.

Module power is produced by the internal isolated power supply from the 24V
DC dual redundant system power inputs. The isolated power supply provides
power to the module and is protected by over-voltage and under-voltage
detection circuits. Supply voltage monitoring initiates a warning signal and
Power-off Protection mode when a power failure is detected.

Internal diagnostics test the module every application cycle to see whether values
are within the 1%-value fault band, and if appropriate, report a fault.

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

Installation Instructions Chapter 2

IMPORTANT

An independent watchdog arrangement also monitors the module operation and
provides additional fault containment by activating a shutdown mechanism if a
fault is detected.

If a fault occurs during normal operation in a duplex-configured system, an
input module can be removed and replaced without disrupting the flow of
input data.

The adapter module also monitors the input data paths and can detect faults
within each input channel. A visual indication of the module status and
individual channel status is provided by an array of front panel indicators.

The range of termination assemblies can accept one or two input modules. Each
assembly provides passive signal load termination and fuse over-voltage
protection on each input channel. The system provides flexible and scalable input
connectivity through mating termination assemblies with the relevant number of
input modules.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 83

Chapter 2 Installation Instructions

+ve

4K99

F1

24V Digital
Field Input
Channel

50 mA Time Lag
Fuse

100

20

-ve

1715-TASIB16D- Termination Assembly

J1/J2

OV Common

500 mV Range

2.5V Range

1715-IB16D Digital Input Module

Power & Signal
Isolator

32101-M

Field Wiring of Digital Input Termination Assemblies

The termination assembly routes each digital input through a circuit. See

Figure 33

over-voltage is applied to the input, the fuse blows. Each digital input signal is
terminated by 5.11 khigh reliability load and is fed to the input module’s input
circuit.

Figure 33 - 1715-TASIB16D Digital Input Termination Assembly Input Circuit

. The input channel is protected with a 50 mA fuse. When an extreme

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

Installation Instructions Chapter 2

Fuse

Fuse
Holder

Channel -

Channel +

TB1 TB2

CH0 CH1 CH2 CH3 CH4 CH5 CH6CH7 CH8CH9

CH10CH11CH12CH13CH14CH15

FS1 FS3 FS5 FS7

FS2

J1

16

cc cc

11 11

16 16 16

J2 J4

J3

FS4 FS6 FS8

FS9 FS11 FS13 FS15

FS10 FS12 FS14 FS16

1715-TASIB16D Digital Input

Simplex Termination

Assembly

1715-TADIB16D Digital Input

Duplex Termination Assembly

32120-M

16

16

FH1

FH2

FH3

FH4

FH5

FH6

FH7

FH8

FH9

J1

TB1

TB2

J2

FH10

FH11

FH12

FH13

FH14

FH15

FH16

OV

OV

CH1

CH2

CH3

CH4

CH5

CH6

CH7

CH8

CH9

CH10

CH11

CH12

CH13

CH14

CH15

CH16

1

1

Terminal Block Cable Entry This Side

Field Connections This Side

Fuse Cover

Pola rizati on
Pins

Pola rizati on
Pins

32095

Fuse Covers

Figure 34 - 1715-TASIB16D and 1715-TADIB16D Digital Input Termination Assemblies

OV

CH5

CH11

FH2

FH1

FH10

FH9

J1

c

16

c

OV

CH12

TB1

CH1

CH6

CH13

FH4

FH3

FH12

FH11

CH4

CH2

CH3

CH9

CH14

CH10

CH8

CH15

CH16

TB2

FH6

FH5

FH13

FH8

FH7

FH16

FH15

FH14

J2

CH7

c

16

a

b

a

c

b

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 85

Chapter 2 Installation Instructions

OV OV CH0 CH1 CH2

CH3

CH4

CH10 CH11 CH12 CH13 CH14 CH15

CH5 CH6

CH7

CH8

CH9

32115-M

TB2

TB1

CH0 - CH1 - CH2- CH3- CH4- CH5- CH6- CH7- CH8- CH9- CH10-CH11-CH12-CH13-CH14-CH15-

CH0+CH1+CH2+ CH3+CH4+CH5+CH6+CH7+ CH8+CH9+CH10+CH11+CH12+CH13+CH14+CH15+

32110-M

Figure 35 - Connections to 1715-TASIB16D Simplex Nonisolated Digital Input
16-channel Termination Assembly

Apply a minimum tightening torque of 0.5 N•m (0.37 lb•ft) to the terminal
screws.

Figure 36 - Connections to 1715-TADIB16D Duplex Digital Input 16-channel Termination
Assembly

Apply a minimum tightening torque of 0.5 N•m (0.37 lb•ft) to the terminal
screws.

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

Installation Instructions Chapter 2

46198

Field Loop Circuits for Digital Inputs

The recommended digital input field loop circuits for the 1715-IB16D digital
input module are shown on page 80

.

For line monitored digital input loop circuit wiring and recommended threshold
values, see Appendix C

.

Recommended Circuits for Digital Outputs

This circuit is suitable for simplex and duplex configurations of digital output
modules. The two 10 A fuses shown are supplied with the adapter in the output
termination assembly. They protect all of the output circuits associated with the
particular termination assembly.

ATT EN TI ON : For inductive loads, connect a diode at the actuator to protect the
adapter against back EMF.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 87

Chapter 2 Installation Instructions

VFIELD 1

VFIELD 2

Response Bus

24V
FIELD
POWER

Response

Command A,B,C

I/0 Command Bus

I/0 Backplane

VFIELD
OV RTN

Power
Combiner

Isolated
Backplane
Interface

PWR

Power
Valid

PWR

Power
Valid

Response

Command

Command

Dual
Redundant
System
Power

SYS_24V1

SYS_24V2

SYS_OV

Isolated
Power
Supply

Over/Under
Voltage
Protection

PWR

Power
Valid

LED Array

Front Panel

Channel
Status

Module
Status

VREF

Termination
Assembly

CH0 CH7

Transient
Suppression

VMON B

VMON A

Output Control

Output Control

Reverse Voltage
Blocking

IMON B

IMON A

VREF

Data Management
& Output Switch
Control A

PWR Feed Combiner Drives

SPI
Flash

Response

Combined Power Feed

Termination
Assembly

Data Management
& Output Switch
Control B

32107-M1

1715-OB8DE Digital Output Module Functional Block Diagram

Figure 37 - 1715-OB8DE Functional Bock Diagram

Refer to Figure 37. The field output channel is controlled by two independent

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

output switch control units. The field output circuitry is galvanically isolated
from the processor input commands and response lines by an isolated interface
circuit. This architecture protects the system processors from faults in the
module’s output control circuits and possible field device faults.

Module power is produced by the internal isolated power supply, supplied by the
dual redundant system power inputs. Over- and under-voltage protection is
applied to the module internal power supply outputs.

Installation Instructions Chapter 2

Command packets are received from the processor module via the EtherNet/IP
network. The output switch control units decode and vote the output data
addressed to them and set the output FET switches accordingly. The output
voltages are produced from the 24V DC field power input voltages by a power
combiner circuit. Each output channel has a pair of FET switches arranged in a
series that are independently controlled. Load current and voltage monitoring is
provided for each switch. Output channel protection ensures the output circuit is
switched off when the channel load current exceeds a safe limit.

A reverse voltage protection circuit ensures that externally applied voltages to any
output channel do not generate current flow backwards into the module outputs.

In Duplex redundant mode, the two fail-safe output switches per channel are
combined in a parallel arrangement so that they automatically form a fault­tolerant output configuration. In this configuration, removal and of an output
module is possible without any disruption to a live system.

The module has a range of self-checking functionality. Short circuit and open
circuit line monitoring is provided on all outputs. In addition, each output
channel is tested and checked for ‘stuck-on’ and ‘stuck-off ’ conditions on the
output switch pairs.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 89

Chapter 2 Installation Instructions

TEST

Ov V1+ Ov V2+ Ov V1+ Ov V2+

CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7

TB1 TB2 TB3 TB4

J1

FH1 FH2

TB1 TB2 TB3 TB4

J1 J2

cc

Ov

CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7

V1+ Ov V1+Ov V2+ Ov V2+

FH1

FH2

1715-TASOB8DE
Digital Output Simplex
Termination Assembly

32093-M

1715-TAD0B8DE

Digital Output Duplex

Ter mina tio n Ass embl y

32121-M

Field Connections This Side

Field Connections This Side

Polarizing Pins

Polar izing
Pins

10 A Fuse

10 A Fuse

Field Wiring of Digital Output Termination Assemblies

The 1715-TASOB8DE and 1715-TADOB8DE consist of a simple PCB, screw
termination blocks (16 terminals), two 10A fuses with a plastic fuse cover, coding
pegs, field terminal connectors and connectors to connect the module to the
command and response buses.

Figure 38 - 1715-TASOB8DE and 1715-TADOB8DE Digital Output Termination Assemblies

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

Installation Instructions Chapter 2

OV OV OV

V1

+

+

V2

V1 +

V2 +

OV

To
Next
TA
(if tted)

TB1 TB2 TB3 TB4

CH0 CH2 CH4 CH6

CH1 CH3 CH5 CH7

32105-M DO TA Field Wiring

VFIELD1+24V DC

VFIELD2+24V DC

VFIELD RTN OV

DO CH0
DO CH1
DO CH2
DO CH3

DO CH4
DO CH5
DO CH6
DO CH7

F2

F1

Digital Output Module
Fail Safe Channel
Array

32103-M DO Simplex Output
Connections

Figure 39 - Connections to 1715-TASOB8DE and 1715-TADOB8DE Digital Output Termination
Assembly 8-channel Simplex/Duplex

Apply a minimum tightening torque of 0.5 N•m (0.37 lb•ft) to the terminal
screws.

The 24V DC field voltages VFIELD 1 and VFIELD 2, used by the output
module for the output field voltages, are connected at the terminal blocks and fed
via two replaceable 10 A fuses, F1 and F2. These fuses give protection for the
output module against field faults. Field OV (VFIELD RTN) is also routed from
the output module connectors to the terminal block.

Figure 40 - 1715-TASOB8DE Digital Output Simplex Termination Assembly Connections

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 91

Chapter 2 Installation Instructions

VFIELD1

+24V DC

VFIELD2

+24V DC

VFIELD RTN

OV

Fuse F2

Fuse F1

Digital Output

Fail Safe Channel

Array

Connector J1

DO Module

Digital Output

Fail Safe Channel

Array

Connector J2

DO Module

DO CH0
DO CH1
DO CH2
DO CH3

DO CH4
DO CH5
DO CH6
DO CH7

33004-M DO Duplex Outpu t
Connections

OV OV OV

V1

+

+

V2

V1 +

V2 +

OV

To
Next
TA
(if tted)

TB1 TB2 TB3 TB4

CH0 CH2 CH4 CH6

CH1 CH3 CH5 CH7

32105-M DO TA Field Wiring

Figure 41 - 1715-TADOB8DE Digital Output Duplex Termination Assembly Connections

Figure 42 - Digital Output Termination Assembly Field Wiring

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

Installation Instructions Chapter 2

IMPORTANT

DC

DC

33002-M

Important: For inductive loads, a back EMF protection diode
is fitted at the load.

Field Loop Circuits for Digital Outputs

The field loop circuit for a digital output is shown in Figure 43.

The field power 5A fuses comply with UL508 requirements. The 5A fuses are
No. 396/TE5 5A time lag fuse; UL 248-14, 125 V,T Leadfree; manufactured by
Littlefuse.

• You can use Class 2 power supplies for the +24V DC field voltage instead of
the two 5A fuses. Class 2 is defined by the NEC as providing less than 100
watts (at 24V).

• When digital output modules are configured as a redundant pair, the
minimum load current required for channels with line monitoring is 20 mA.

Figure 43 - Digital Output (simplex or duplex) Field Loop Circuit

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 93

Chapter 2 Installation Instructions

Channel 0

Channel 1

Channel 2

Channel 3

Channel 4

Channel 5

Channel 6

Channel 7

Field
Inputs

Termination
Assembly

Dual
Redundant
System
Power

SYS_24V1

SYS_24V2

SYS_OV

Dual Input
Measurement
Device

Isolated
Power
Supply

Over/Under
Voltage
Protection

PWR

Power
Valid

Isolator

PWR
CMD
RES

PWR
CMD
RES

PWR
CMD
RES

PWR
CMD
RES

PWR
CMD
RES

PWR
CMD
RES

PWR
CMD
RES

Dual Input
Measurement
Device

Isolator

PWR
CMD
RES

PWR

CMD

Input Data

Data Management
FPGA

PWR

Power
Valid

SPI
Flash

PMA Commands
PMB Commands
PM Commands

I/O Command Bus

Response Bus

Front Panel
LEDS

I/O Backplane

Input Data

Module Status

Channel Status

32106-M Function Block Diagram

Typ ica l Ci rcu it

Recommended Circuits for Analog Inputs

This section describes the layout for analog inputs.

1715-TASIF16 Analog Input Termination Assembly Functional Block Diagram

This is the diagram for the analog input termination assembly.

Figure 44 - 1715-Analog Input Termination Assembly Functional Block

Each input signal is routed through the termination assembly to two input
measurement devices. These devices determine the input status and channel
condition and generate the input data for the controller.

Signal and power isolation circuits separate each input channel from the rest of
the system, thus protecting the system components from field faults.

Module power is produced by the internal isolated power supply from the
24V DC dual redundant system power inputs. The isolated power supply
provides power to the module and is protected by over-voltage and under-voltage
detection circuits. Supply voltage monitoring initiates a warning signal and
Power-off Protection mode when a power failure is detected.

Internal diagnostics, controlled by the adapter module, test the module at routine
intervals of 50…100 ms. An independent watchdog arrangement also monitors
the module operation and provides additional fault containment by activating a
shutdown mechanism when a fault is detected.

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

Installation Instructions Chapter 2

IMPORTANT

Shield

Required

Terminal

Blocks

OV

Termination

Assembly

+24V DC

4…20 mA

2-Wire Analog Input

50 mA

120Ω

32116-M

If a fault occurs during normal operation in a duplex configured system, a
faulted input module can be removed and replaced without disrupting the
input signals to a live system.
Use extreme caution when removing and inserting I/O modules under power
because bending or damaging the pins can fault the system.

The module also monitors the input data paths and can detect faults within each
input channel. A visual indication of the module status and individual channel
status is provided by an array of front panel indicators and can be connected to
tags within the Logix Designer application.

The termination assemblies can accept one or two input modules. Each
termination assembly provides passive signal load termination and over-voltage
protection for each input channel. The system provides flexible input
connectivity by mating specific termination assemblies with the relevant number
of input modules.

Field Loop Circuits for Analog Inputs

These circuits can be used for simplex and duplex configurations of analog input
modules. Fit a fuse in each circuit to protect the field wiring.

This field loop connection method is used for two-wire field devices.

Figure 45 - Two-wire Analog Input Field Loop Circuit

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 95

Chapter 2 Installation Instructions

Shield

Required

Terminal

Blocks

OV

Termination

Assembly

+24V DC

4…20 mA

3-Wire Analog Input

50 mA

120 Ω

32117-M

Shield

Required

Terminal

Blocks

OV

Termination

Assembly

-V

+V

4…20 mA

4-Wire Analog Input

50 mA

120 Ω

32118-M

This field loop connection is used for three-wire analog field devices.

Figure 46 - Three-wire Analog Input

This field loop connection method is used for four-wire analog field devices.

Figure 47 - Four-wire Analog Input

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

Installation Instructions Chapter 2

IMPORTANT

Input

Circuit

Input

Circuit

Ch. 0…15

+ve

F1 50 mA

100R

2.5V

500mV

0V

20R

-ve

Analog Input Module

Termination Assembly

32111-M

Field Wiring of Analog Input Termination Assemblies

The termination assembly routes each analog input through a circuit similar to
that shown in Figure 48
When an extreme over voltage is applied to the input, the fuse blows. Each analog
input channel is terminated by a precision120
input circuits. The fuses have a plastic fuse cover that must be kept in the closed
position during normal operation. Standard field wiring connections are made at
the terminal blocks on the termination assembly.

With a simplex termination assembly the input signals are routed to one input
module. In duplex configurations they are routed in parallel to two modules.

Figure 48 - Analog Input Termination Assembly Input Circuit

. The input channel is protected with a 50 mA fuse.

resistor and fed to the module’s

These re sisto rs mus t be consi dered as p art o f the f ield l oop ci rcuit. Each c hanne l
has a 50 mA fuse to prevent component damage in over-current situations.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 97

Chapter 2 Installation Instructions

Fuse

Fuse
Holder

Channel -

Channel +

TB1 TB2

CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8CH9

CH10CH11CH12CH13CH14CH15

FS1 FS3 FS5 FS7

FS2

J1

16

cc cc

11 11

16 16 16

J2 J4

J3

FS4 FS6 FS8

FS9 FS11 FS13 FS15

FS10 FS12 FS14 FS16

FH1

FH2

FH7

FH6

FH5

FH4

FH3

FH9

FH8

FH10

FH16

FH15

FH14

FH13

FH12

FH11

FH1

F1

OV OV CH0

CH1 CH2 CH3

CH4 CH5 CH6 CH7 CH8 CH9

CH10 CH11 CH12 CH13 CH14 CH15

TB1

TB2

J1

J2

16

16

11

1715-TADIF16

Analog Input Duplex

Termination Assembly

1715-TASIF16

Analog Input Simplex

Termination Assembly

45238

32120-M

Terminal Block Cable This Side

Field Connections This Side

Fuse Cove r

Fuse Covers

Pola rizing
Pins

Pola rizing
Pins

When an analog input module is configured as dual, the analog field loop
connected to channel 0 is automatically fed to both modules. The system
automatically votes the data from the input modules so that you have only one
value presented to the application. The application program is presented with
channel 0 and channel 1 values in a fault tolerant manner so that if either input
module is lost, both values are still available to the application program.

Figure 49 - 1715-TASIF16 and 1715-TADIF16 Analog Input Termination Assemblies

Analog Input Module Field Devices

If there are two field devices, you normally connect them to two channels of a
fault tolerant pair of modules, for example to channel 0 and to channel 1.

The two input values (0 and 1) then need to be voted by using logic or a function
block in the application program. This is accomplished by taking either the
lowest or highest value, depending on the application. The other option is to use
the two values in two simplex input modules, for example, both using channel 0.
In this case, the values still need to be voted in the application program in the
same way as previously stated, but the system has less fault tolerance, as the loss of
one module removes one of the inputs.

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

Installation Instructions Chapter 2

OV OV CH0 CH1 CH2

CH3

CH4

CH10 CH11 CH12 CH13 CH14 CH15

CH5 CH6

CH7

CH8

CH9

32115-M

TB2

TB1

CH0 - CH1 - CH2- CH3- CH4- CH5- CH6- CH7- CH8- CH9- CH10-CH11-CH12-CH13-CH14- CH15-

CH0+CH1+CH2+ CH3+CH4+CH5+CH6+CH7+ CH8+CH9+CH10+CH11+CH12+CH13+CH14+CH15+

32110-M

Figure 50 - Connections to 1715-TASIF16 Simplex Nonisolated Analog Input Termination
Assembly-16-channel

Apply a minimum tightening torque of 0.5 N•m (0.37 lb•ft) to the terminal
screws.

Figure 51 - Connections to 1715-TADIF16 Duplex Isolated Analog Input Termination Assembly

Apply a minimum tightening torque of 0.5 N•m (0.37 lb•ft) to the terminal
screws.

Rockwell Automation Publication 1715-UM001C-EN-P - March 2014 99

Chapter 2 Installation Instructions

CH

LOOP-

DAOTA
PCB130861 REV A

LOOP+

TB1

J1 J2 J4

J3

01

TB2

23

TB3

45

TB4

67

32122-M

1715-TADOF8
Analog Output Duplex
Termination Assembly

1715-TASOF8

Analog Output Simplex

Termination Assembly

32123-M

Field Connections This Side

Field Connections This Side

J1 J2

cc

CH0 1 2 3 4 5 6 7

Fuse Cover

Fuse Cove rs

Pola rizing
Pins

Pola rizing
Pins

Recommended Wiring for Analog Output Modules

This section describes the wiring for analog outputs.

Field Wiring of Analog Output Termination Assemblies

Figure 52 - 1715-TASOF8 and 1715-TADOF8 Analog Output Termination Assemblies

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