Rockwell Automation 1794-AENTR, 1794-AENTRXT User manual

User Manual Original Instructions
FLEX I/O Dual-port EtherNet/IP
Adapters
Catalog Numbers 1794-AENTR, 1794-AENTRXT

2Rockwell Automation Publication 1794-UM066C-EN-E - April 2023
FLEX I/O Dual-port EtherNet/IP Adapters 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.
These labels may also be on or inside the equipment to provide specific precautions.
The following icon may appear in the text of this document.
Rockwell Automation recognizes that some of the terms that are currently used in our industry and in this publication are not in alignment with the
movement toward inclusive language in technology. We are proactively collaborating with industry peers to find alternatives to such terms and
making changes to our products and content. Please excuse the use of such terms in our content while we implement these changes.
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.
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).
Identifies information that is useful and can help to make a process easier to do or easier to understand.

Rockwell Automation Publication 1794-UM066C-EN-E - April 2023 3
Table of Contents
Preface
About This Publication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Download Firmware, AOP, EDS, and Other Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Studio 5000 Logix Designer Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Summary of Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Chapter 1
Overview of FLEX I/O and Your
Redundant EtherNet/IP Adapter
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
The FLEX I/O System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Adapter Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Types of Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Hardware and Software Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
What the Adapter Does . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Use of the Control and Information Protocol (CIP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Understand the Producer/Consumer Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Specify the Requested Packet Interval (RPI). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Rack-optimized and Direct Connection Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Mixing Rack-optimized and Direct Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chapter 2
Install Your FLEX I/O Adapter Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Module Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Mount Your Adapter on a DIN Rail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Mount on a Panel or Wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Connect Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Set the Network Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Mounting Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Chapter 3
Configure the Adapter for Your
EtherNet/IP Network
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Configuration Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
IP Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Gateway Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Subnet Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Other Methods to Set the IP Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Implicit Protected Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Enter and Exit Implicit Protected Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Restrictions Imposed By Implicit Protected Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Perform Tasks When Restricted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Enable or Disable Web Server and SNMP Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Chapter 4
Rack-optimized Discrete I/O Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4Rockwell Automation Publication 1794-UM066C-EN-E - April 2023
Table of Contents
Set Up the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Add the Adapter to the Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Add the FLEX I/O Modules to the I/O Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Create the Ladder Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Download the Program to the Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Test the Example Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Chapter 5
Analog I/O with Direct
Connection
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Set Up the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Create the Example Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Add the Analog Modules to the I/O Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Add the Analog Input Module to the I/O Configuration . . . . . . . . . . . . . . . . . . . . . . . . . 32
Add the Analog Output Module to the I/O Configuration. . . . . . . . . . . . . . . . . . . . . . . . 34
Edit the Controller Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Modify the Ladder Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Download the Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Test the Example Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Appendix A
Interpret Status Indicators Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Appendix B
Configure the RSLinx Ethernet
Communication Driver
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
About the Ethernet Communication Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Install the RSLinx Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Configure the AB_ETH Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Appendix C
Adapter Web Dialogs Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Enable or Disable the Web Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Log in to the Web Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Mandatory First-time Password Change. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Maximum Limit of Unsuccessful Login Attempts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Access the Home Page of the Web Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Access Diagnostic Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Use the Network Settings Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Use the Ethernet Statistics Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Use the I/O Connections Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Access Configuration Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Use the Device Identity Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Use the Network Configuration Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Use the Device Services Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Rockwell Automation Publication 1794-UM066C-EN-E - April 2023 5
Preface
About This Publication This manual describes how you can use your FLEX™ I/O EtherNet/IP™ adapter with your controller.
The manual helps you install, program, and troubleshoot your module.
Download Firmware, AOP,
EDS, and Other Files
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.
Studio 5000 Logix Designer
Application
The Studio 5000 Logix Designer® application is the re-branding of RSLogix 5000® software and
continues to be the product to program Logix 5000® controllers for discrete, process, batch,
motion, safety, and drive based solutions.
Summary of Changes This publication contains the following new or updated information. This list includes substantive
updates only and is not intended to reflect all changes.
Additional Resources These resources link to additional information about related products from Rockwell Automation.
To download publications, click the link or visit rok.auto/literature and search for the publication
numbers.
Topic Page
Updated template Throughout
Added inclusive language acknowledgment 2
Added description for Studio 5000 Logix Designer application 5
Updated Set the Network Address section 14
Added section on Other Methods to Set the IP Address 19
Added section on Implicit Protected Mode 20
Added section on Enable or Disable the Web Server 21, 45
Added section on Log in to the Web Server 46
Addition Resources
Resource Description
FLEX I/O and FLEX I/O-XT Selection Guide, publication 1794-SG002 A description and overview of the 1794 series FLEX I/O and FLEX I/O-XT™ modules and compatible
control platforms.
FLEX I/O Dual Port EtherNet/IP Adapter Module Installation Instructions,
publication 1794-IN131
Information on how to install the FLEX I/O redundant EtherNet/IP adapters
(1794-AENTR, 1794-AENTRXT).
FLEX I/O Communication Adapters Specifications Technical Data,
publication 1794-TD014 Technical specifications and certifications for FLEX I/O communication adapters.
FLEX I/O Power Supply Modules Installation Instructions, publication 1794-IN069 Information on how to install the FLEX I/O DC Power Supply (1794-PS13, 1794-PS3).
Interconnect Cable Installation Instructions, publication 1794-IN012 Information on how to install the extension cables (1794-CE1, 1794-CE3).
EtherNet/IP Network Devices User Manual, publication ENET-UM006 Describes how to configure and use EtherNet/IP devices to communicate on the EtherNet/IP
network.
Ethernet Reference Manual, publication ENET-RM002 Describes basic Ethernet concepts, infrastructure components, and infrastructure features.
Industrial Components Preventive Maintenance, Enclosures, and Contact
Ratings Specifications, publication IC-TD002 Provides a quick reference tool for Allen-Bradley® industrial automation controls and assemblies.
Safety Guidelines for the Application, Installation, and Maintenance of
Solid-state Control, publication SGI-1.1
Designed to harmonize with NEMA Standards Publication No. ICS 1.1-1987 and provides general
guidelines for the application, installation, and maintenance of solid-state control in the form of
individual devices or packaged assemblies incorporating solid-state 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.

6Rockwell Automation Publication 1794-UM066C-EN-E - April 2023
Preface
Notes:

Rockwell Automation Publication 1794-UM066C-EN-E - April 2023 7
Chapter 1
Overview of FLEX I/O and Your Redundant
EtherNet/IP Adapter
Overview This chapter provides a description of the FLEX I/O dual-port EtherNet/IP adapters and an overview
of how they communicate with programmable controllers.
The FLEX I/O System The FLEX I/O system is a small, modular I/O system for distributed applications that performs all of
the functions of rack-based I/O. Figure 1 shows the components of a FLEX I/O system.
Figure 1 - FLEX I/O System Components
• Adapter – Transfers read and write configuration data to and from the I/O module
• Terminal base – Contains a terminal strip to terminate wiring for two- or three-wire devices
• I/O module – Contains the bus interface and circuitry that is needed to perform specific
functions that are related to your application
The FLEX system consists of an adapter, terminal base unit, DIN rail, power supply, and adapter
cabling components. You can use up to eight terminal bases per adapter.
For detailed instructions on how to set up and install your module, see Install Your FLEX I/O Adapter
on page 11.
Adapter Features The 1794-AENTR and 1794-AENTRXT adapter features include:
• Use of EtherNet/IP messages encapsulated within standard TCP/UDP/IP protocol
• Common application layer with ControlNet® and DeviceNet®
• Interfacing via Category 5 rated twisted-pair cable
• Half/full duplex 10 Mbit or 100 Mbit operation
•DINrailmounting
• Communication to and from other FLEX I/O modules on the same DIN rail
• Communication supported by RSLinx® software
• IP address assigned via standard BOOTP/DHCP tools
• I/O configuration via Studio 5000 Logix Designer application
• No network scheduling required
• No routing tables required
Adapter I/O moduleTerminal base

8Rockwell Automation Publication 1794-UM066C-EN-E - April 2023
Chapter 1 Overview of FLEX I/O and Your Redundant EtherNet/IP Adapter
Types of Adapters The adapter refers to the following catalogs.
Hardware and Software
Compatibility
The adapters and the applications that are described in this manual are compatible with the
following firmware revisions and software releases. Contact Rockwell Automation if you need
software or firmware updates to use this equipment.
See FLEX I/O Communication Adapters Specifications Technical Data, publication 1794-TD014, for
technical specifications and certifications for your adapter.
What the Adapter Does The 1794-AENTR and 1794-AENTRXT adapters perform two primary tasks:
• Control of real-time I/O data (implicit messaging). The adapter serves as a bridge between
I/O modules and the network.
• Support of messaging data for configuration and programming information (explicit
messaging).
Catalog Number Voltage Module Capacity Description
1794-AENTR 24V DC 8 max Dual-port EtherNet/IP adapter
1794-AENTRXT Dual-port EtherNet/IP adapter with extended temperatures range
Table 1 - Hardware and Software Compatibility
Product Firmware Revision/
Software Version
1794-AENTR/1794-AENTRXT adapter 1.xx or higher
Logix 558x Controller 20 or higher
Studio 5000 Logix Designer 20 or higher
RSLinx software 2.59 or higher
5
5
8
0
EtherNet/IP network
E
N
2
T
R
Other
network
devices
A
E
N
T
R
FLEX I/O E
N
2
T
R
ControlLogix I/O
ControlLogix®
5580 chassis

Rockwell Automation Publication 1794-UM066C-EN-E - April 2023 9
Chapter 1 Overview of FLEX I/O and Your Redundant EtherNet/IP Adapter
Use of the Control and
Information Protocol (CIP)
The 1794-AENTR and 1794-AENTRXT adapters use the Control and Information Protocol (CIP™). CIP is
the application layer protocol that is specified for EtherNet/IP, the Ethernet Industrial Protocol, as
well as for ControlNet and DeviceNet. It is a message-based protocol that implements a relative
path to send a message from the producing device in a system to the consuming devices.
The producing device contains the path information that steers the message along the proper
route to reach its consumers. Since the producing device holds this information, other devices
along the path simply pass this information; they do not need to store it.
This has two significant benefits:
• You do not need to configure routing tables in the bridging modules, which greatly simplifies
maintenance and module replacement.
• You maintain full control over the route that is taken by each message, which enables you to
select alternative paths for the same end device.
Understand the Producer/
Consumer Model
The CIP Producer/Consumer networking model replaces the old source/destination (master/slave)
model. The Producer/Consumer model reduces network traffic and increases speed of
transmission. In traditional I/O systems, controllers poll input modules to obtain their input status.
In the CIP system input modules are not polled by a controller. Instead, they produce (multicast)
their data either upon a change of state (COS) or periodically. The frequency of update depends
upon the options that are chosen during configuration and where on the network that the input
module resides. The input module, therefore, is a producer of input data and the controller is a
consumer of the data.
The controller can also produce data for other controllers to consume. The produced and
consumed data is accessible by multiple controllers over the EtherNet/IP network. This data
exchange conforms to the Producer/Consumer model.
Specify the Requested
Packet Interval (RPI)
The RPI is the update rate that is specified for a particular piece of data on the network. The RPI
can be specified for the adapter and include all of the I/O modules communicating through it (using
a rack-optimized connection) or specified for a particular module (using direct connection). When
you add a module or an adapter to the I/O configuration of a controller, you must enter the RPI as a
parameter. This value specifies how often to produce the data for that device. For example, if you
specify an RPI of 50 ms, it means that every 50 ms the device should send its data to the controller
or the controller should send its data to the device.
RPIs are only used for devices that produce data. For example, a ControlLogix EtherNet/IP bridge in
the same chassis as the controller does not require an RPI because it is not a data-producing
member of the system; it is used only as a bridge to remote racks.
Rack-optimized and Direct
Connection Support
The 1794-AENTR and 1794-AENTRXT adapters support both direct and rack-optimized connections.
A direct connection is a real-time data transfer link between the controller and the device that the
configuration data references. Direct connection messaging occurs at a cyclic rate that is specified
by the RPI during configuration. A rack-optimized connection is a grouping of data from multiple
I/O module into a single block of data sent over a single connection at the same data rate.
Rack-optimized connections reduce the total number of connections that are needed to transfer
data when using many I/O modules in a system. The following example illustrates the benefit of
rack-optimized connections.
Assume you have set up a system that contains eight discrete I/O modules interfaced to an
adapter. If you use direct connections to transfer data to each of these I/O modules, you need eight
connections to transfer all of the data, one to each of the eight I/O modules. If you use a rack-
optimized connection to transfer the data, you only need a single connection – the connection to
the adapter.

10 Rockwell Automation Publication 1794-UM066C-EN-E - April 2023
Chapter 1 Overview of FLEX I/O and Your Redundant EtherNet/IP Adapter
See EtherNet/IP Device Level Ring Application Technique, publication ENET-AP007, for more
information on connections.
Mixing Rack-optimized and Direct Connections
You can mix communication formats for different I/O modules communicating through the same
adapter. I/O modules set up to use rack optimization communicates at the rate of the requested
packet interval (RPI) configured for the 1794-AENTR or 1794-AENTRXT adapter. I/O modules that are
configured for direct communication communicate at their own set RPIs and ignore the
adapter RPI.
IMPORTANT Although rack-optimized connections offer an efficient way to use
resources, there are a few limitations on their use:
• You can only use rack-optimized connections to send data to and from
discrete I/O modules. Analog I/O requires direct connections.
• Rack-optimized connections can contain I/O data and status information
only. Additional module information, such as diagnostics, is not available
through a rack-optimized connection.
• All data is sent simultaneously at the RPI rate of the adapter.