ControlLogix Digital I/O Modules User Manual

User Manual

Original Instructions

ControlLogix Digital I/O Modules

Catalog Numbers 1756-IA8D, 1756-IA16, 1756-IA16I, 1756-IA32, 1756-IB16, 1756-IB16D, 1756-IB16I, 1756-IB16IF, 1756-IB32, 1756-IC16, 1756-IG16, 1756-IH16I, 1756-IM16I, 1756-IN16, 1756-IV16, 1756-IV32, 1756-OA8, 1756-OA8D, 1756-OA8E, 1756-OA16, 1756-OA16I, 1756-OB8, 1756-OB8EI, 1756-OB8I, 1756-OB16D, 1756-OB16E, 1756-OB16I, 1756-OB16IEF, 1756-OB16IEFS, 1756-OB16IS, 1756-OB32, 1756-OC8, 1756-OG16, 1756-OH8I, 1756-ON8, 1756-OV16E, 1756-OV32E, 1756-OW16I, 1756-OX8I

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).

What Are ControlLogix Digital I/O Modules?

Digital I/O Operation in the ControlLogix System

Table of Contents

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Summary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Product Compatibility and Download Center . . . . . . . . . . . . . . . . . . . . 9 Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Chapter 1

Available Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 I/O Modules in the ControlLogix System . . . . . . . . . . . . . . . . . . . . . . . 12 Module Identification and Status Information. . . . . . . . . . . . . . . . . . . 15

Chapter 2

Ownership . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 1756-OB16IEF Redundant Owner . . . . . . . . . . . . . . . . . . . . . . . . . 18

Internal Module Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Output Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Direct Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Rack-optimized Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Suggestions for Rack-optimized Connections . . . . . . . . . . . . . . . . 23

Input Module Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Input Modules in a Local Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

RPI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 COS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Trigger Event Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Input Modules in a Remote Chassis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Remote Input Modules Connected via the ControlNet Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Remote Input Modules Connected via the EtherNet/IP Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Output Module Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Output Modules in a Local Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Output Modules in a Remote Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Remote Output Modules Connected via the ControlNet Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Remote Output Modules Connected via the EtherNet/IP Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Listen-only Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Multiple Owner-Controllers of Input Modules . . . . . . . . . . . . . . . . . . 31 Configuration Changes in an Input Module with Multiple Owners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

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Table of Contents

Common Module Features

Chapter 3

Input Module Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Output Module Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Common Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Removal and Insertion Under Power . . . . . . . . . . . . . . . . . . . . . . . . 37 Module Fault Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Software Configurable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Electronic Keying. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Module Inhibiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Use the System Clock to Timestamp Inputs and Schedule Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Producer/Consumer Communication . . . . . . . . . . . . . . . . . . . . . . 44 Status Indicator Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Common Features Specific to Input Modules. . . . . . . . . . . . . . . . . . . . 44 Data Transfer on Either Cyclic Time or Change of State. . . . . . 45 Set RPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Enable Change of State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Software Configurable Filter Times . . . . . . . . . . . . . . . . . . . . . . . . . 47 Isolated and Nonisolated Varieties of Input Modules . . . . . . . . . 47 Multiple Input Point Densities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Common Features Specific to Output Modules . . . . . . . . . . . . . . . . . . 48 Configurable Point-level Output States . . . . . . . . . . . . . . . . . . . . . 49 Output Data Echo. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Isolated and Nonisolated Varieties of Output Modules . . . . . . . 50 Multiple Output Point Densities . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Electronic Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Field Power Loss Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Diagnostic Latch of Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Time-scheduled Output Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Fault and Status Reporting between Input Modules and Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Fault and Status Reporting between Output Modules and Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Fuse Blown Bit per Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

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Table of Contents

Diagnostic Module Features

Chapter 4

Diagnostic Input Module Compatibility . . . . . . . . . . . . . . . . . . . . . . . . 61 Diagnostic Output Module Compatibility . . . . . . . . . . . . . . . . . . . . . . 62 Diagnostic Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Diagnostic Latch of Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Diagnostic Timestamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 8-Point AC/16-Point DC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Point-level Fault Reporting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Features Specific to Diagnostic Input Modules. . . . . . . . . . . . . . . . . . . 65 Diagnostic Change of State for Input Modules . . . . . . . . . . . . . . . 65 Open Wire Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Field Power Loss Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Features Specific to Diagnostic Output Modules . . . . . . . . . . . . . . . . . 69 Field Wiring Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 No Load Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Field-side Output Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Pulse Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Diagnostic Change of State for Output Modules . . . . . . . . . . . . . 73 Fault and Status Reporting between Input Modules and Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Fault and Status Reporting between Output Modules and Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Fast Module Features

Chapter 5

Fast Input Module Compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Fast Output Module Compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Fast Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Response Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Features Specific to Fast Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . 79

Pulse Capture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Per Point Timestamping and Change of State. . . . . . . . . . . . . . . . 81 Software Configurable Filter Times . . . . . . . . . . . . . . . . . . . . . . . . . 84 Dedicated Connection for Event Tasks. . . . . . . . . . . . . . . . . . . . . . 87 Features Specific to Fast Output Modules . . . . . . . . . . . . . . . . . . . . . . . 89 Programmable Fault State Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Pulse Width Modulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Fault and Status Reporting between Input Modules and Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Fault and Status Reporting between Output Modules and Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Redundant Owners. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 Configure Redundant Owners. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 About Redundant Owners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 Configure the Output Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 Response Times for Output Modules . . . . . . . . . . . . . . . . . . . . . . 109 Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

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