Rockwell Automation Redundant I/O System User Manual
Redundant I/O System
Catalog Numbers 1715-AENTR, 1715-IB16D, 1715-OB8DE,
1715-IF16, 1715-OF8I
User Manual |
Original Instructions |
Redundant I/O System User Manual
Important User Information
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.
IMPORTANT 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).
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Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
Table of Contents
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Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. 3 |
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Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
.11 |
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About This Publication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
11 |
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Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
11 |
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Required Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
11 |
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Download Firmware, AOP, EDS, and Other Files . . . . . . . . . . . . . . . . . . . |
11 |
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Summary of Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
11 |
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Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
12 |
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Chapter 1 |
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Redundancy System Overview |
Redundant 1715 Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
13 |
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1715 I/O Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
13 |
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1715 I/O Modules in SIL 2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . |
14 |
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System Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
14 |
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Termination Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
14 |
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Base Unit Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
14 |
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1715-AENTR Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
15 |
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I/O Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
15 |
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Module Positioning in the 1715 Redundant I/O System . . . . . . . . . . |
15 |
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Layout the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
17 |
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System Context . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
18 |
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Simplex Architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
20 |
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Duplex Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
21 |
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Mixed Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
23 |
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Bus Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
24 |
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Switchover Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
25 |
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Obtaining a New IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
26 |
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Ethernet Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
26 |
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Communication on the EtherNet/IP Network . . . . . . . . . . . . . . . . . . |
28 |
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System Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
28 |
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Input / Output Traffic Prioritization. . . . . . . . . . . . . . . . . . . . . . . . . . . |
28 |
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Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
28 |
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RPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
29 |
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Connection and Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
29 |
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Timestamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
30 |
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Chapter 2 |
|
Installation Instructions |
Environment and Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
32 |
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Prevent Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
32 |
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European Hazardous Location Approval . . . . . . . . . . . . . . . . . . . . . . . |
33 |
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Multi-point Network Communication Connections . . . . . . . . . . . . . |
34 |
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Field-side Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
34 |
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Removal and Insertion Under Power (RIUP) Fuses. . . . . . . . . . . . . . |
34 |
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North American Hazardous Location Approval . . . . . . . . . . . . . . . . . |
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Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
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Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Ensure that Warranty is Not Compromised . . . . . . . . . . . . . . . . . . . . 36 Graphical Representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Spacing Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
System Hardware Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 1715-AENTR Adapter Redundant Pair . . . . . . . . . . . . . . . . . . . . . . . . . . 38 1715 Digital and Analog I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 1715-A2A Adapter Base Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 1715-A3IO I/O Base Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 I/O Termination Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 1715-C2 Expansion Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 1715-N2T and 1715-N2S Slot Filler Covers . . . . . . . . . . . . . . . . . . . . . . . 50 Power Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Cooling Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Heating Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Specify an Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
System Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Module Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Base Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Install Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Step 1: Enclosure DIN Rail Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Step 2: Build the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Product Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 DIN Rail Mounting Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 DIN Rail Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Component Size and Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Install the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Install the Adapter Base Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Install the I/O Base Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Install Termination Assembly to I/O Base Unit . . . . . . . . . . . . . . . . . . . . . 64 Mount Termination Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Mount I/O Expansion Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Cable Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Expansion Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Install Expansion Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Wire the Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Connect the 24V DC System Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Wire the Ground Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Connect Field Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Recommended Circuits for Digital Inputs. . . . . . . . . . . . . . . . . . . . . . 75 Recommended Circuits for Digital Outputs . . . . . . . . . . . . . . . . . . . . 80 1715-OB8DE Digital Output Module FBD . . . . . . . . . . . . . . . . . . . . . . . 82 Recommended Circuits for Analog Inputs . . . . . . . . . . . . . . . . . . . . . 86 Recommended Wiring for Analog Output Modules . . . . . . . . . . . . . 94 Connect the Adapter to the Ethernet Network . . . . . . . . . . . . . . . . . . . . . 96 Module Keying. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 Verify Coding Pegs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Electronic Keying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
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Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
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More Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
101 |
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Install the Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
101 |
|
Assign an IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
104 |
|
Step 1: Assign an IP Address on the BOOTP/DHCP Server . . . . . . |
105 |
|
Step 2: Configure the Module with RSLinx Classic Software . . . . |
108 |
|
Install the I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
110 |
|
Install Slot Filler Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
112 |
|
Remove Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
112 |
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Chapter 3 |
|
Security |
Protected Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
115 |
|
Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
115 |
|
Web-Server Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
115 |
|
Enable / Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
115 |
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Chapter 4 |
|
Digital I/O Operation |
1715 Digital Module Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
117 |
|
1715-IB16D Digital Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
118 |
|
1715-OB8DE Digital Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . |
118 |
|
Common Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
119 |
|
Determining Input Module Compatibility . . . . . . . . . . . . . . . . . . . . . . . . |
119 |
|
Termination Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
120 |
|
Determining Output Module Compatibility . . . . . . . . . . . . . . . . . . . . . . |
120 |
|
Termination Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
120 |
|
Using Features Common to 1715 Standard Digital I/O Modules . . . . . |
120 |
|
Removal and Insertion Under Power (RIUP) . . . . . . . . . . . . . . . . . . |
120 |
|
Module Fault Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
121 |
|
Fully Software Configurable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
121 |
|
Module Inhibiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
121 |
|
Status Indicator Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
122 |
|
Features Specific to 1715-IB16D Digital Input Modules . . . . . . . . . . . . . |
122 |
|
Data Transfer on Either Cyclic Time or Change of State . . . . . . . . |
122 |
|
Set RPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
123 |
|
Enable Change of State. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
123 |
|
Field-side Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
124 |
|
Features Specific to 1715-OB8DE Digital Output Modules . . . . . . . . . . |
124 |
|
Field Power Status Integers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
125 |
|
Field Fault Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
125 |
|
Configurable Point-level Output Fault States . . . . . . . . . . . . . . . . . . |
127 |
|
Output Data Echo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
127 |
|
Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
128 |
|
Diagnostic Latch Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
129 |
|
Shutdown State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
130 |
|
Energize-on-communication-failure . . . . . . . . . . . . . . . . . . . . . . . . . |
131 |
|
De-energize-to-trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
131 |
|
Disable Line Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
131 |
|
Fault and Status Reporting between Input Modules |
|
|
and Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
132 |
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Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
5 |
Using 1715 Analog I/O
Module Features
Fault and Status Reporting between Output Modules
and Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Chapter 5
1715 Analog Module Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 1715-IF16 Analog Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 1715-OF8I Analog Output Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Features Common to All
Analog I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 Removal and Insertion Under Power (RIUP) . . . . . . . . . . . . . . . . . . 137 Module Fault Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 Fully Software Configurable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 Status Indicator Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138 Module Inhibiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139 Online Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 Offline Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 Shutdown Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 Ready Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 Run Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 Shutdown States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 HART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 HART Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 Configuration of HART Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 Precautions for HART in a Safety System . . . . . . . . . . . . . . . . . . . . . 142 Configure HART for Field Device Monitoring . . . . . . . . . . . . . . . . . 142 AB:1715_ChCHART_Struc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 HART Pass-Through. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145 Using HART Pass-Through . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145 HART Pass-Through Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Precautions for HART Pass-Through in a Safety System . . . . . . . . 147 Installing the 1715-DTM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Updating the Asset Management System DTM Catalogue . . . . . . 149 Enable HART Pass-Through in the Controller . . . . . . . . . . . . . . . . . 150 Using Factory Talk Asset Center with Analog Modules. . . . . . . . . . 150 1715-DTM Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 1715-DTM HART Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Configure the Redundant I/O
System
Chapter 6
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 Install the Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 Install the Add-on Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 Product Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158 Installation of product, this is achieved using the PCDC Website 158 EDS Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158 Create the Project in RSLogix 5000 or Studio 5000 Logix Designer. . 160 Step 1: Create the New Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160 Step 2: Configure the Controller in the Project. . . . . . . . . . . . . . . . . 162
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1715 Redundant I/O System in
SIL 2 Safety Applications
Step 3: Add a 1756-EN2TR Module to the Project . . . . . . . . . . . . . . . 163 Add the 1715-AENTR Adapter to the I/O Configuration Tree . . . . . . . . 165 Step 1: Configure the Adapter for the EtherNet/IP Network . . . . . 165 Options for Setting the IP Addresses of 1715-AENTR Modules . . . 165 Ethernet Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166 Step 2: Add the 1715-AENTR Adapter to the Project . . . . . . . . . . . . . 166 Obtaining System Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 1715-IB16D Digital Input Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177 Add the Digital Input Module to the Project . . . . . . . . . . . . . . . . . . . 177 Step 1: Add the Digital Input Module in Duplex Mode . . . . . . . . . . 177 Step 2: Add the Digital Input Module in Simplex Mode . . . . . . . . . 182 1715-OB8DE Digital Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 Step 1: Add the Digital Output Module in Duplex Mode . . . . . . . . . 185 Step 2: Add the Digital Output Module in Simplex Mode . . . . . . . 187 1715-IF16 Analog Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 Add the Analog Input Module to the Project . . . . . . . . . . . . . . . . . . . 189 Step 1: Add the Analog Input Module in Duplex Mode . . . . . . . . . . 189 Step 2: Add the Analog Input Module in Simplex Mode . . . . . . . . . 192 1715-OF8I Analog Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 Add the Analog Output Module to the project. . . . . . . . . . . . . . . . . . 193 Step 1: Add the Analog Output Module in Duplex Mode. . . . . . . . . 193 Step 2: Add the Analog Output Module in Simplex Mode . . . . . . . 198
Chapter 7
SIL 2 Safety Application Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 201 1715 I/O Modules in SIL 2 Safety Applications . . . . . . . . . . . . . . . . . . . . . 202 Typical Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208 Using the 1715 Adapter in SIL 2 Applications . . . . . . . . . . . . . . . . . . . . . . 208 Reaction to Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208 Using 1715 I/O Modules in SIL 2 Applications . . . . . . . . . . . . . . . . . . . . . 209 Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209 Considerations for Sensor and Actuator Configurations . . . . . . . . . . . 212 Configure SIL 2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 Enable SIL 2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Specify the Connection Reaction Time Limit and Requested Packet Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 Set Safe State Values for Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Check SIL 2 Reset Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216 View Module Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216 Diagnostic Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216 Reaction Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217 System Reaction Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
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Logix System Reaction Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217 Configuring the SIL 2 Task Period and Watchdog . . . . . . . . . . . . . . . . . 218 SIL Task/Program Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218 Configuring the Output Module Program/Fault Actions . . . . . . . . 219 Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Using SIL 2 Add-On Instructions with 1715 Redundant I/O Modules
Chapter 8
SIL 2 Add-On Instructions Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221 SIL 2 Check Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224 Add-On Instruction Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225 Add-On Instruction Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Download and Import the Add-On Instructions. . . . . . . . . . . . . . . . . . . 227
Import Add-On Instructions to Upgraded Projects . . . . . . . . . . . . . 227 Create a Periodic Task for SIL 2 Safety Functions . . . . . . . . . . . . . . . . . 228 1715 SIL 2 Periodic Task ‘Period’ Configuration . . . . . . . . . . . . . . . . 228 Configure an Input Module Add-On Instruction . . . . . . . . . . . . . . . . . . 230 Configure an Output Module Add-On Instruction. . . . . . . . . . . . . . . . . 233 Add-On Instruction Scan Times. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 Safety Reaction Time Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . 236 Using the Add-On Instruction Data Tags in an Application Program 237 Performing a SIL 2 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
|
Chapter 9 |
|
Redundant I/O System |
Diagnostic Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
241 |
Diagnostics |
|
|
|
Appendix A |
|
Status Indicators |
Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
245 |
|
System Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
245 |
|
Module Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
245 |
|
Channel Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
246 |
|
Field Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
246 |
|
User Application Fault Indications and Logging . . . . . . . . . . . . . . . |
246 |
|
Troubleshooting Faults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
246 |
|
1715 Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
247 |
|
Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
250 |
|
1715 Digital Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
250 |
|
1715 Digital Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
252 |
|
1715 Analog Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
253 |
|
1715 Analog Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
255 |
1715-IB16D Digital Input Module
Diagnostics
Appendix B
Threshold Values for Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257 Threshold Diagnostics Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258 Calculate Threshold and Resistor Values . . . . . . . . . . . . . . . . . . . . . . . . . 261
Calculate the Voltage for Off/On Conditions for Threshold Values . . 261
Calculate On/Off Condition for Resistor Values. . . . . . . . . . . . . . . . 265 Calibration Drift Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
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Appendix C
Reconfigure a Module Online Use Ladder Logic to Reconfigure an I/O Module . . . . . . . . . . . . . . . . . . 269 Reconfigure a Module Via Studio 5000 Logix Designer Application . 269
Reconfigure a Module Via Ladder Logic. . . . . . . . . . . . . . . . . . . . . . . 270
PFD and PFH Calculations for a SIL 2 System
Appendix D
About PFD and PFH Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273 Determine Which Values to Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273 Calculations for 1715 I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273 PFD Calculations with 24-hour MTTR . . . . . . . . . . . . . . . . . . . . . . . . 274 Communications Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
|
Appendix E |
|
SIL 2 Applications Checklist |
1715 I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
277 |
|
Appendix F |
|
I/O Tag Definitions |
1715-AENTR Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
279 |
|
1715-IB16D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
280 |
|
1715-OB8DE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
282 |
|
1715-IF16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
284 |
|
1715-OF8I. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
285 |
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Appendix G |
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History of Changes |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
287 |
|
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
291 |
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10 |
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
Preface
About This Publication
This manual explains how to install and configure the 1715 Redundant I/O System. This redundant, modular system is designed to work 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, and 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 that is required to install and configure your system.
Required Software
This list identifies the minimum software versions that are required to use your 1715 Redundant I/O System:
•Either RSLogix 5000® or Studio 5000® software
•RSLogix 5000 programming software, version 20
Non-SIL 2 applications using revision 2.x of 1715 can use version 19
•RSLogix 5000 requires Microsoft Windows Vista; Microsoft Windows 7, 32and 64-bit; and Microsoft Windows 2003 Server operating systems
•Studio 5000 environment version 21 or later
•Studio 5000 requires Microsoft Windows Vista; Microsoft Windows 7, 32and 64-bit; and Microsoft Windows 2003 Server operating systems
•ControlFLASH™ software version 13.00.00 or later
•Adapter Add-on Profile at rok.auto/pcdc.
•I/O Modules Add-on Profile at rok.auto/pcdc.
•Add-on Instructions at rok.auto/pcdc.
ATTENTION: 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 rok.auto/certifications. See the TÜV website at http://www.tuvasi.com for SIL 2 certification listings.
Download Firmware, AOP,
EDS, and Other Files
Summary of Changes
Download firmware, associated files (such as AOP, EDS, and DTM), and access product release notes from the Product Compatibility and Download Center at rok.auto/pcdc.
This publication contains the following new or updated information. This list includes substantive updates only and is not intended to reflect all changes.
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
11 |
Topic |
Page |
PFD Calculations with 24-hour MTTR |
274 |
Applied latest publication template |
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Additional Resources
These documents contain additional information concerning related products from Rockwell Automation.
Resource |
|
Description |
|||
1715 Redundant I/O System Technical Specifications, publication 1715-TD001 |
|
Provides technical specifications for components of the 1715 Redundant I/O System. |
|||
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EtherNet/IP Network Configuration User Manual, publication ENET-UM001 |
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Describes how you can use EtherNet/IP modules with your Logix 5000™ controller and |
|||
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communicate with various devices on the Ethernet network. |
||||
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|
|
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ControlLogix Enhanced Redundancy System, publication 1756-UM535 |
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Provides design and configuration information for a ControlLogix Redundancy System. |
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ControlLogix Digital I/O Modules User Manual, publication 1756-UM058 |
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Describes how to install, configure, and troubleshoot ControlLogix digital I/O modules. |
|||
ControlLogix Analog I/O Modules User Manual, publication 1756-UM009 |
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Describes how to install, configure, and troubleshoot ControlLogix analog I/O modules. |
|||
Using ControlLogix in SIL 2 Applications Safety Reference Manual, |
|
Describes the guidelines for using ControlLogix controllers in a SIL 2 safety application. |
|||
publication 1756-RM001 |
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||||
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|
||||
Safety Guidelines for the Application, Installation, and Maintenance of |
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Designed to harmonize with NEMA Standards Publication No. ICS 1.1-1987 and provides |
|||
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general guidelines for the application, installation, and maintenance of solid-state control in |
||||
Solid-state Control, publication SGI-1.1 |
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the form of individual devices or packaged assemblies incorporating solid-state |
|||
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components. |
Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1 |
Provides general guidelines for installing a Rockwell Automation industrial system. |
||||
Product Certifications website, rok.auto/certifications. |
|
Provides declarations of conformity, certificates, and other certification details. |
|||
You can view or download publications at rok.auto/literature.
12 |
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
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 you build and adapt a system to suit the specific needs of an installation. The architecture lets you choose from different levels of adapter and I/O fault protection.
The 1715 Redundant I/O System consists of a two-slot adapter base unit that houses a redundant adapter pair. The adapter base unit is connected to up to eight I/O base units, which 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. One module in a duplex pair 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 Adapters
The redundant, partnered adapters 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 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.
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.
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13 |
Chapter 1 Redundancy System Overview
Table 1 lists the 1715 modules that can be used in this system.
Table 1 - Modules Available for the 1715 Redundant I/O System
Cat. No. |
Description |
1715-AENTR x 2 |
A pair of Ethernet adapters |
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 SIL 2 safety applications, see Chapter 7 and Chapter 8.
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 more 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.
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).
An adapter 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).
14 |
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
Chapter 1 Redundancy System Overview
1715-AENTR Adapters
The leftmost adapter position, or slot, is 0. The rightmost adapter slot is 1. One redundant adapter pair always occupies slots 0 and 1 of the system. ‘A’ designates the primary adapter partner and ‘B’ designates the secondary adapter partner of the redundant adapter pair. This system is designed to run with two adapters. It can run with one adapter for a limited time while replacing a damaged module, but ideally, needs both adapters running simultaneously.
IMPORTANT There is no method for configuring a system to use only one 1715AENTR adapter. If you use only one 1715-AENTR adapter, the unused module generates errors.
A ‘partner’ adapter can be installed or removed for replacement, while the 1715 Redundant I/O System is operational. The ‘partner’ adapter can be identified by the Network Status Light Emitting Diode (LED) flashing green. 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 base units.
IMPORTANT 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.
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 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 Table 2 for a sample of what a system could look like.
Expansion cables can be used to connect base units, as shown in Figure 1 on page 17.
The sample system configuration in Example 1 does not match the system layout that is displayed in Example 2. Example 1 and Example 2 are different examples of possible configurations you can have for your system.
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
15 |
Chapter 1 Redundancy System Overview
Table 2 - Example 1 - A Sample System Configuration
System Slot Number |
Base Unit Type |
Module Position/Slot Number by Base |
Module Designation |
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Unit Type |
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0 |
Adapter |
0 |
Adapter A |
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1 |
Adapter |
1 |
Adapter B |
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2 |
I/O |
01 First I/O base unit |
Module A of first duplex pair |
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3 |
I/O |
02 |
Module B of first duplex pair |
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4 |
I/O |
03 |
Module A of second duplex pair |
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5 |
I/O |
04 Second I/O base unit |
Module B of second duplex pair |
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6 |
I/O |
05 |
First simplex module |
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7 |
I/O |
06 |
Module A of third duplex pair |
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8 |
I/O |
07 Third I/O base unit |
Module B of third duplex pair |
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9 |
I/O |
08 |
Second simplex module |
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10 |
I/O |
09 |
Third simplex module |
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11…25 |
I/O |
10…24 Fourth…eighth I/O base unit |
Any combination of simplex/duplex pair modules |
16 |
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
Chapter 1 Redundancy System Overview
Figure 1 - Example 2 - A Sample System Layout
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TERMINAL IDENTITY |
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TERMINAL IDENTITY |
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TERMINAL IDENTITY |
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TERMINAL IDENTITY |
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TERMINAL IDENTITY |
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TERMINAL IDENTITY |
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CH1 CH1 CH1 CH1 |
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CH1 CH1 CH1 CH1 |
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CH1 CH1 CH1 CH1 |
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CH1 CH1 CH1 CH1 |
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CH1 CH1 CH1 CH1 |
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CH1 CH1 CH1 CH1 |
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CH1 CH1 CH1 CH1 |
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CH1 CH1 CH1 CH1 |
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CH1 CH1 CH1 CH1 |
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CH1 CH1 CH1 CH1 |
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CH1 CH1 CH1 CH1 |
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CH1 CH1 CH1 CH1 |
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AOTA |
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AOTA |
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AOTA |
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AOTA |
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AOTA |
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AOTA |
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Dual. |
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Dual. |
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Module Status |
Module Status |
Healthy |
Healthy |
Healthy |
Healthy |
Healthy |
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Redundancy Status |
Redundancy Status |
Ready |
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Ready |
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Network Status |
Network Status |
Run |
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Run |
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Rack Status |
Rack Status |
Channel 00 |
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Channel 02 |
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Channel 03 |
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Ethernet 1 |
Ethernet 1 |
Channel 05 |
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Channel 05 |
Channel 05 |
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Channel 06 |
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Ethernet 2 |
Ethernet 2 |
Channel 06 |
Channel 06 |
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Channel 11 |
Channel 11 |
Channel 11 |
Reset |
Reset |
Channel 12 |
Channel 12 |
Channel 12 |
Channel 12 |
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Channel 13 |
Channel 13 |
Channel 13 |
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Channel 14 |
Channel 14 |
Channel 14 |
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Channel 15 |
Channel 15 |
Channel 15 |
Channel 15 |
Healthy |
Healthy |
Healthy |
Healthy |
Healthy |
Healthy |
Healthy |
Healthy |
Healthy |
Ready |
Ready |
Ready |
Ready |
Ready |
Ready |
Ready |
Ready |
Ready |
Run |
Run |
Run |
Run |
Run |
Run |
Run |
Run |
Run |
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Channel 00 |
Channel 00 |
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Channel 08 |
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Channel 08 |
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Channel 09 |
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Channel 09 |
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Channel 10 |
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Channel 10 |
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Channel 11 |
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Channel 11 |
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Channel 12 |
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Channel 12 |
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Channel 13 |
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Channel 13 |
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Channel 14 |
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Channel 14 |
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Channel 15 |
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Channel 15 |
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Layout the Hardware |
This section discusses how to lay out the hardware for the system by topology. |
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
17 |
Chapter 1 Redundancy System Overview
1756 ControlLogix
Primary Chassis
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. The topologies that the 1756-EN2T or 1756-EN2TR modules support, DLR (Ring) or Star, establish all connections via the Ethernet network.
For more 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
1756 ControlLogix
Secondary Chassis
1756 RM Cable
| <![if ! IE]> <![endif]>1756-EN2TR |
|
<![if ! IE]> <![endif]>1756-RM2 |
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<![if ! IE]> <![endif]>1756-EN2TR |
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<![if ! IE]> <![endif]>1756-RM2 |
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AOTA |
AOTA |
AOTA |
AOTA |
AOTA |
AOTA |
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Dual. |
Dual. |
Dual. |
Dual. |
Dual. |
Dual. |
| <![if ! IE]> <![endif]>1715-AENTR |
<![if ! IE]> <![endif]>1715-AENTR |
<![if ! IE]> <![endif]>1715-I/O |
<![if ! IE]> <![endif]>1715-I/O |
<![if ! IE]> <![endif]>1715-I/O |
<![if ! IE]> <![endif]>1715-I/O |
<![if ! IE]> <![endif]>1715-I/O |
<![if ! IE]> <![endif]>1715-I/O |
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1715 Redundant I/O |
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45242 |
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18 |
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
Chapter 1 Redundancy System Overview
Figure 3 - 1715 Redundant I/O System Star Topology Attached to a 1756 ControlLogix Enhanced
Redundancy System
1756 ControlLogix |
1756 ControlLogix |
Primary Chassis |
Secondary Chassis |
|
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1756 RM Cable |
|
| <![if ! IE]> <![endif]>1756-EN2T |
<![if ! IE]> <![endif]>1756-RM2 |
<![if ! IE]> <![endif]>1756-EN2T |
<![if ! IE]> <![endif]>1756-RM2 |
Ethernet
Switch
TERMINAL IDENTITY |
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TERMINAL IDENTITY |
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TERMINAL IDENTITY |
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TERMINAL IDENTITY |
TERMINAL IDENTITY |
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TERMINAL IDENTITY |
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AOTA |
AOTA |
AOTA |
AOTA |
AOTA |
AOTA |
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Dual. |
Dual. |
Dual. |
Dual. |
Dual. |
Dual. |
| <![if ! IE]> <![endif]>1715-AENTR |
<![if ! IE]> <![endif]>1715-AENTR |
<![if ! IE]> <![endif]>1715-I/O |
<![if ! IE]> <![endif]>1715-I/O |
<![if ! IE]> <![endif]>1715-I/O |
<![if ! IE]> <![endif]>1715-I/O |
<![if ! IE]> <![endif]>1715-I/O |
<![if ! IE]> <![endif]>1715-I/O |
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45239 |
To prevent ground loops caused by shielded cables, RJ45 shields on the ethernet ports on the 1715 adapter base unit are connected to earth through a parallel resistance /capacitance circuit arrangement as shown in Figure 4 below:
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
19 |
Chapter 1 Redundancy System Overview
Figure 4 - Shield Termination Arrangement to prevent Ground Loops
RJ 45
Shield
Resistor
Transient
Capacitor 
Protection
Device
This complies with the shield grounding guidance given in The CIP Networks Library, Volume 2, Edition 1.21, section 8-9.4.3. ©ODVA, Inc. 2016.
For more information regarding ODVA, visit www.odva.org.
Simplex Architecture
Simplex I/O modules fail-safe on the first detected module fault. The process under control shuts down when the fault is detected.
This configuration is suitable for high and low demand module applications.
20 |
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
Chapter 1 Redundancy System Overview
Figure 5 - Simplex Architecture - Input and Output
ADAPTER
SENSORS
I/P
ADAPTER
<![if ! IE]><![endif]>CIP NETWORK
ControlLogix
Duplex Architecture
O/P |
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TADOB8DE |
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Dual. |
Dual. |
Dual. |
| <![if ! IE]> <![endif]>1715-AENTR |
<![if ! IE]> <![endif]>1715-AENTR |
<![if ! IE]> <![endif]>1715-IB16D |
<![if ! IE]> <![endif]>1715-OB8DE |
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1715-A2A |
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1715-A3IO |
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Adapter |
I/O Base Units |
Base Unit
45241
An example configuration of dual input modules and adapters, and an output module is shown in Figure 6. A redundant input or redundant output module provides fault tolerance for module failures. The duplex arrangement can be used for low demand and high demand applications.
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
21 |
Chapter 1 Redundancy System Overview
Figure 6 - Duplex Architecture Duplex Inputs, Simplex Output
I/P |
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ADAPTER |
<![endif]>CIP NETWORK
CLX
22 |
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
Chapter 1 Redundancy System Overview
Figure 7 - Duplex Architecture Inputs and Outputs
I/P |
|
ADAPTER |
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SENSORS
I/P |
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ADAPTER |
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<![endif]>CIP NETWORK
CLX
O/P
FINAL
ELEMENTS
O/P
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1715- |
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1715- |
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TADIB16D |
TADIF16 |
||
| <![if ! IE]> <![endif]>1715-AENTR |
<![if ! IE]> <![endif]>1715-AENTR |
<![if ! IE]> <![endif]>1715-IB16D |
<![if ! IE]> <![endif]>1715-IB16D |
<![if ! IE]> <![endif]>1715-IF16 |
<![if ! IE]> <![endif]>1715-IF16 |
1715-A2A |
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1715-A3IO |
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1715-A3IO |
|
Termination assemblies can span across I/O base units.
Mixed Architecture
There can be a mixture of architectures within one system. Figure 8 shows simplex and dual I/O configurations with dual processors.
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
23 |
Chapter 1 Redundancy System Overview
Figure 8 - Mixed Architecture
SENSORS |
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I/P |
O/P |
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SENSORS |
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I/P |
<![if ! IE]> <![endif]>CIP NETWORK |
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1715- |
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1715- |
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1715- |
1715- |
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TADIB16D |
TADOB8DE |
TASIB16D |
TASOB8DE |
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| <![if ! IE]> <![endif]>1715-AENTR |
<![if ! IE]> <![endif]>1715-AENTR |
<![if ! IE]> <![endif]>1715-IB16D |
<![if ! IE]> <![endif]>1715-IB16D |
<![if ! IE]> <![endif]>1715-OB8DE |
<![if ! IE]> <![endif]>1715-OB8DE |
|
<![if ! IE]> <![endif]>1715-IB16D |
<![if ! IE]> <![endif]>1715-OB8DE |
1715-A2A |
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1715-A3IO |
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1715-A3IO |
|||
45423
Bus Diagram
A detailed drawing of the backplane is shown Figure 9.
24 |
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
Chapter 1 Redundancy System Overview
Figure 9 - Bus Diagram of 1715 Redundant I/O System
Switchover Considerations Each 1715 Redundant I/O System uses one IP address as the primary IP address for all communication on the EtherNet/IP network. The redundant adapter pair consists of two active modules, a primary adapter and its partner, a secondary module. For 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 in the leftmost slot is considered the primary module (when two adapters 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 always active and are responsible for monitoring all inputs and outputs, monitoring diagnostics in the system, and reading and writing data from/to I/O simultaneously. When the primary module receives a write, it notifies the secondary module of the data to write and which module to write it to. At a synchronized point in time, both adapters physically write to the I/O.
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
25 |
Chapter 1 Redundancy System Overview
The adapters 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 IP address of the primary module, taking over the role of communication. The primary module is the only module of the pair that produces data on the EtherNet/IP network.
If there is 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. You can detect which module the primary module is by examining the Network status indicator near the top of each adapter. 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 is a good reason to swap over again. If the B module becomes the primary module because you must replace the A module, that is not enough cause to swap IP addresses back again. Module B remains as the primary module.
Obtaining a New IP Address
The IP address of the primary module 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 (that is, Module B), attempts to obtain the IP address of the primary module through BOOTP/DHCP.
The adapters continue to attempt BOOTP/DHCP configuration until an IP address is obtained, alternating between adapters A and B. Once an adapter 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 Network Configuration User Manual, publication ENET-UM001. The Network Status indicator displays duplicated IP addresses by showing solid RED.
For additional information about assigning an IP address for the first time, see Chapter 2, Assign an IP Address on page 123.
Ethernet Topology
The 1715 Redundant I/O System supports DLR (Ring) and Star Topologies.
26 |
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
Chapter 1 Redundancy System Overview
For a DLR (Ring) Topology, the Ethernet ports of the adapters 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 10 - DLR (Ring) Ethernet Topology
Module A
Port 1
Port 2
Module Status
Redundancy Status
Network Status
Rack Status
Ethernet
1
Ethernet 2 |
Reset
Module Status
Redundancy Status
Network Status
Rack Status
Ethernet
1 
Ethernet 2 |
Reset 
Module B
Port 1
Port 2
For a STAR Topology, the Ethernet ports of the adapters 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 11 - STAR Ethernet Topology
Module A
Port 1
Port 2
Module Status
Redundancy Status
Network Status
Rack Status
Ethernet 1 |
Ethernet 2 |
Module Status
Redundancy Status
Network Status
Rack Status
Ethernet 1 |
Ethernet 2 |
Module B
Port 1
Port 2
Reset |
Reset |
45240
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
27 |
Chapter 1 Redundancy System Overview
For Ethernet considerations, see EtherNet/IP Network Configuration User Manual, publication ENET-UM001, and ControlLogix Redundancy User Manual, publication 1756-UM535.
Communication on the EtherNet/IP Network
System Performance
Communication to a simplex module is addressed to the slot number for that module. CIP communication to modules in a duplex configuration (including the adapters) is addressed to the lowest slot number for the module pair.
The adapters 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.
This section discusses connections and RPI settings for the 1715 Redundant I/O System.
Input / Output Traffic Prioritization
Note:In order to respect its IO schedule, the 1715 privileges class 1 (IO) traffic over class 3 traffic.
Connections
The adapter 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 12 has five I/O modules. Four are duplex and one is simplex. They are all configured for data connection.
28 |
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
Chapter 1 Redundancy System Overview
Figure 12 - Duplex and Simplex Connections
The example in Figure 12 shows six connections; one for each entry in the configuration.
Table 3 - RSLogix 5000® or Studio 5000 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.
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 |
|
|
180 ms |
1715-IB16D |
|
|
60 ms |
1715-OB8DE |
60 ms |
750 ms |
60 ms |
1715-IF16 |
|
|
120 ms |
1715-OF8I |
|
|
120 ms |
Connection and Data Format
The adapter and I/O modules each support one data connection for input/ output data. Listen Only connections are not supported.
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
29 |
Chapter 1 Redundancy System Overview
Timestamping
A timestamp is the time an event occurred. It is recorded by the 1715 system and passed to ControlLogix. Timestamp resolution is in μs, but 1715 is accurate to 10 ms typical.
30 |
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 |
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