Rockwell Automation Allen-Bradley ControlLogix 1756-IB16ISOE User manual

ControlLogix
Sequence of Events
Module
1756-IB16ISOE (24/48V dc),
1756-IH16ISOE (125V dc)
User Manual

Important User Information
Solid state equipment has operational characteristics differing from those of
electromechanical equipment. Safety Guidelines for the Application,
Installation and Maintenance of Solid State Controls (Publication SGI-1.1
available from your local Rockwell Automation sales office or online at
http://www.ab.com/manuals/gi) describes some important differences
between solid state equipment and hard-wired electromechanical devices.
Because of this difference, and also because of the wide variety of uses for
solid state equipment, all persons responsible for applying this equipment
must satisfy themselves that each intended application of this equipment is
acceptable.
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 we may 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.
IMPORTANT Identifies information that is critical for successful
application and understanding of the product.
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
•recognize the consequence
SHOCK HAZARD Labels may be located on or inside equipment to alert
people that dangerous voltage may be present.
BURN HAZARD Labels may be located on or inside equipment to alert
people that surfaces may be dangerous temperatures.

1Publication 1756-UM528A-EN-P - April 2004
Preface
Purpose of This Manual
This manual describes how to use the ControlLogix Sequence of
Events module in your ControlLogix application. With this manual,
you can learn how to install, configure and troubleshoot the module.
There are two types of ControlLogix Sequence of Events modules, as
described in Table Preface.1:
Who Should Use
This Manual
This manual is intended for individuals who program ControlLogix
control systems, such as:
•software engineers
•control engineers
•application engineers
To most efficiently use the Sequence of Events module, you should be
familiar with:
•ControlLogix™ controllers
•ControlLogix ControlNet™ communication modules
•RSLogix 5000™
•RSNetWorx for ControlNet™
Table Preface.1
Catalog number: Description: Availability date:
1756-IB16ISOE 16-point, 10 - 50V dc module June 2004
1756-IH16ISOE 16-point, 90 - 140V dc
module
April 2004
IMPORTANT The two types of Sequence of Events modules have
identical functionality, except for the fact that they
operate at different voltage levels. Throughout this
manual, we use the term Sequence of Events module
generically. When you read the term, it refers to both
types of modules unless specifically noted.

Publication 1756-UM528A-EN-P - April 2004
Preface 2
What This Manual Contains
Table Preface.2 lists the sections contained in this manual:
Related Documentation
Table Preface.3 lists related ControlLogix documentation that may
assist you when using the Sequence of Events module.
Table Preface.2
Section: Title:
Chapter 1 What is the ControlLogix Sequence of Events Module?
Chapter 2 How Does the Sequence of Events Module Operate in a
ControlLogix System?
Chapter 3 Installing the Sequence of Events Module
Chapter 4 Configuring the Sequence of Events Module
Chapter 5 Using the Sequence of Events Module Features
Chapter 6 Using The Sequence of Events Module in CST Per Point Mode
Chapter 7 Using The Sequence of Events Module in FIFO Mode
Chapter 8 Troubleshooting the Sequence of Events Module
Appendix A Specifications and Module Block Diagrams
Appendix B Integrating The HiProm GPS Module (1756HP-GPS) into a
ControlLogix Sequence of Events Module System
Appendix C Using the Sequence of Events Module for Absolute First Fault
Detection
Appendix D Using Module Tags
Appendix E Using Sample RSLogix 5000 Projects with the Sequence of Events
Module
Table Preface.3 Related Documentation
Catalog
number:
Document title: Publication
number:
1756-A4, -A7,
-A10, -A13, -A17
ControlLogix Chassis–Series B Installation
Instructions
1756-IN080
1756-PA72/B,
-PB72/B
ControlLogix Power Supply Installation
Instructions
1756-5.67
1756-PA75,
-PB75
ControlLogix Power Supply Installation
Instructions
1756-5.78
1756-PH75 ControlLogix 125V DC (90-143V) Power Supply 1756-IN589
1756-Series ControlLogix Module Installation Instructions
(Each module has separate installation
document.)
Multiple 1756-IN
numbers
1756-CNB,
-CNBR
Using ControlNet Communication Modules in
Logix5000 Control Systems User Manual
CNET-UM001
1756-Lx ControlLogix System User Manual 1756-UM001

Publication 1756-UM528A-EN-P - April 2004
Preface 3
Preventing Electrostatic
Discharge
This module is sensitive to 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.
•If available, use a static-safe workstation.
When not in use, store the equipment in appropriate
static-safe packaging.

Publication 1756-UM528A-EN-P - April 2004
Preface 4
Environment and Enclosure
ATTENTION This equipment is intended for use in a Pollution
Degree 2 industrial environment, in overvoltage
Category II applications (as defined in IEC
publication 60664-1), at altitudes up to 2000 meters
without derating.
This equipment is considered Group 1, Class A
industrial equipment according to IEC/CISPR
Publication 11. Without appropriate precautions,
there may be potential difficulties ensuring
electromagnetic compatibility in other environments
due to conducted as well as radiated disturbance.
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 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.
See NEMA Standards publication 250 and IEC
publication 60529, as applicable, for explanations of
the degrees of protection provided by different types
of enclosure. Also, see the appropriate sections in
this publication, as well as the Allen-Bradley
publication 1770-4.1 (“Industrial Automation Wiring
and Grounding Guidelines”), for additional
installation requirements pertaining to this
equipment.

1Publication 1756-UM528A-EN-P - April 2004
Table of Contents
Chapter 1
What is the ControlLogix
Sequence of Events Module?
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 1-1
What does Sequence of Events Module Do? . . . . . . . . . . . . 1-1
Timestamping Using the Coordinated System Time (CST) 1-1
On-Board Data Storage . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Two Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . 1-3
What Else Does the Sequence of Event Module Do? . . . . . . 1-3
Understanding the Module’s Physical Features . . . . . . . . . . 1-4
Using Module Identification and Status Information . . . . . . 1-5
Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 1-6
Chapter 2
How Does the Sequence of Events
Module Operate in a ControlLogix
System?
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 2-1
Differences Between Sequence of Events Module
and Standard Digital I/O . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Similar Functionality to Standard ControlLogix DC
Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Propagating a Signal From Field Device to Backplane . . . . 2-4
Sequence of Events Module in a Local Chassis . . . . . . . . . . 2-6
Requested Packet Interval (RPI) . . . . . . . . . . . . . . . . . . 2-6
Enable CST Capture . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Sequence of Events Module in a Remote Chassis . . . . . . . . 2-8
Remote Input Module Connected Via ControlNet . . . . . 2-8
Remote Input Modules Connected Via EtherNet/IP . . . . 2-10
Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 2-10
Chapter 3
Installing the Sequence of
Events Module
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 3-1
Installing the Sequence of Events Module. . . . . . . . . . . . . . 3-1
Keying the Removable Terminal Block. . . . . . . . . . . . . . . . 3-3
Connecting Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Wiring the RTB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Recommendations for Wiring Your RTB . . . . . . . . . . . . 3-5
Wiring the Sequence of Events Module . . . . . . . . . . . . . . . 3-6
Assembling The Removable Terminal Block and
the Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Choosing the Extended-Depth Housing . . . . . . . . . . . . . . . 3-8
Recommendations for Using the
Extended-Depth Housing . . . . . . . . . . . . . . . . . . . . . . . 3-9
Cabinet Size Considerations With the
Extended-Depth Housing . . . . . . . . . . . . . . . . . . . . . . . 3-9
Installing the Removable Terminal Block . . . . . . . . . . . . . . 3-10
Removing the Removable Terminal Block . . . . . . . . . . . . . 3-12
Removing the Module from the Chassis . . . . . . . . . . . . . . . 3-13
Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 3-14

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Table of Contents 2
Chapter 4
Configuring the Sequence of
Events Module
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 4-1
Configuring Your I/O Module . . . . . . . . . . . . . . . . . . . . . . 4-1
RSLogix 5000 Configuration Software . . . . . . . . . . . . . . 4-1
Overview of the Configuration Process . . . . . . . . . . . . . . . 4-2
Adding a New Module to Your RSLogix 5000 Project . . . . . 4-3
Communications Format. . . . . . . . . . . . . . . . . . . . . . . . 4-5
Electronic Keying. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Using the Default Configuration. . . . . . . . . . . . . . . . . . . . . 4-6
Altering the Default Configuration . . . . . . . . . . . . . . . . . . . 4-6
Downloading Configuration. . . . . . . . . . . . . . . . . . . . . . . . 4-7
Editing Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Configuring Modules in a Remote Chassis . . . . . . . . . . . . . 4-9
Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 4-11
Chapter 5
Using the Sequence of Events
Module Features
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 5-1
Determining Module Compatibility . . . . . . . . . . . . . . . . . . 5-2
Module Features That Can Be Configured . . . . . . . . . . . . . 5-3
Two Operational Modes. . . . . . . . . . . . . . . . . . . . . . . . 5-3
Enable CST Capture . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Latch CST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Chatter Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Software Configurable Input Filters. . . . . . . . . . . . . . . . 5-10
Electronic Keying. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Module Inhibiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
Other Inherent Module Features . . . . . . . . . . . . . . . . . . . . 5-16
Removal and Insertion Under Power (RIUP) . . . . . . . . . 5-16
Module Fault Reporting . . . . . . . . . . . . . . . . . . . . . . . . 5-16
Fully Software Configurable . . . . . . . . . . . . . . . . . . . . . 5-17
Producer/Consumer Model. . . . . . . . . . . . . . . . . . . . . . 5-17
Status Indicator Information . . . . . . . . . . . . . . . . . . . . . 5-18
Full Class I Division 2 Compliance . . . . . . . . . . . . . . . . 5-19
Agency Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 5-19

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Table of Contents 3
Chapter 6
Using The Sequence of Events
Module in CST Per Point Mode
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 6-1
Overview of the Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
How Does the Module Store Timestamp Data in CST
Per Point Mode? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
What Are The Typical Applications Where CST Per Point
Mode is Used?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Configuring the Module for CST Per Point Mode . . . . . . . . 6-4
Choosing a Communications Format. . . . . . . . . . . . . . . 6-5
Using Latch CST in CST Per Point Mode . . . . . . . . . . . . 6-6
Using Enable CST Capture in CST Per Point Mode. . . . . 6-7
Managing the Data in CST Per Point Mode . . . . . . . . . . . . . 6-8
Module Sends Data to the Controller . . . . . . . . . . . . . . 6-8
Copying Relevant Input Data to a Separate
Data Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Acknowledging Latched Timestamp Data . . . . . . . . . . . 6-12
Sorting the Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
Clearing All Data From the Module’s Buffers At Once. . . . . 6-14
Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 6-14
Chapter 7
Using The Sequence of Events
Module in FIFO Mode
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 7-1
Overview of the Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
How Does the On-Board Buffer Work in FIFO Mode? . . . . 7-2
What the Typical Applications Where FIFO Mode is Used? . 7-4
Configuring the Module for FIFO Mode . . . . . . . . . . . . . . . 7-4
Choosing a Communications Format. . . . . . . . . . . . . . . 7-5
Using Latch CST in FIFO Mode. . . . . . . . . . . . . . . . . . . 7-6
Using Enable CST Capture in FIFO Mode . . . . . . . . . . . 7-9
Managing the Data in FIFO Mode . . . . . . . . . . . . . . . . . . . 7-10
Retrieving Data in FIFO Mode . . . . . . . . . . . . . . . . . . . 7-10
Producing Current Event Data . . . . . . . . . . . . . . . . . . . 7-14
Copying Relevant Input Data to a Separate
Data Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15
Acknowledging Latched Timestamp Data . . . . . . . . . . . 7-17
Clearing All Data From the Module’s Buffers At Once. . . . . 7-20
Changing Between Retrieval Methods . . . . . . . . . . . . . . . . 7-20
Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 7-20

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Table of Contents 4
Chapter 8
Troubleshooting the Sequence of
Events Module
What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 8-1
Using LED Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Using RSLogix 5000 To Troubleshoot the Module. . . . . . . . 8-2
Determining Fault Type . . . . . . . . . . . . . . . . . . . . . . . . 8-4
Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . 8-4
Appendix A
Specifications and Module
Block Diagrams
1756-IB16ISOE Specifications. . . . . . . . . . . . . . . . . . . . . . . A-1
1756-IB16ISOE Module Block Diagram . . . . . . . . . . . . . . . A-4
1756-IH16ISOE Specifications . . . . . . . . . . . . . . . . . . . . . . A-5
1756-IH16ISOE Module Block Diagram . . . . . . . . . . . . . . . A-8
Appendix B
Integrating The HiProm GPS
Module (1756HP-GPS) into a
ControlLogix Sequence of Events
Module System
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
What is the 1756HP-GPS Module? . . . . . . . . . . . . . . . . . . . B-2
Correlating CST with UCT . . . . . . . . . . . . . . . . . . . . . . B-2
Determining the Absolute First Fault Across Multiple Chassis B-4
How Does the ControlLogix Controller Retrieve
Converted Value from the 1756HP-GPS Module? . . . . . . . . B-6
Converting Timestamps from CST Format to Universal
Coordinated Time Format . . . . . . . . . . . . . . . . . . . . . . . . . B-8
Appendix C
Synchronizing CSTs Across
Multiple Chassis
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Using a Time Master . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Configuring 1756-SYNCH Modules in RSLogix 5000. . . . C-3
Synchronizing Chassis in ControlLogix Redundancy Systems C-4
Related SynchLink Documentation. . . . . . . . . . . . . . . . . . . C-5
Appendix D
Using Module Tags
Fault and Status Reporting Between the Module
and Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1
Module Tag Names and Definitions . . . . . . . . . . . . . . . . . . D-2
Tags Used in CST Point Per Mode . . . . . . . . . . . . . . . . D-2
Tags Used in FIFO Mode . . . . . . . . . . . . . . . . . . . . . . . D-7
Appendix E
Using Sample RSLogix 5000
Projects with the Sequence of
Events Module
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1
Accessing the Sample Projects . . . . . . . . . . . . . . . . . . . . . . E-2
Glossary
Index