Bradley Smoker 1734-AENT User Manual

POINT I/O
EtherNet/IP
Adapter Module

1734-AENT

User Manual

Important User Information

SHOCK HAZARD

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://literature.rockwellautomation.com/) 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, when necessary we use notes to make you aware of
safety considerations.

WARNING

IMPORTANT

ATTENTION

BURN HAZARD

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.

Identifies information that is critical for successful
application and understanding of the product.

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.

Labels may be located on or inside the equipment (for
example, drive or motor) to alert people that dangerous
voltage may be present.

Labels may be located on or inside the equipment (for
example, drive or motor) to alert people that surfaces may
be dangerous temperatures.

Allen-Bradley, ControlLogix, Logix5555, POINT I/O, POINTBus, RSLinx, RSLogix 5000, and RSNetWorx are trademarks of
Rockwell Automation, Inc. Trademarks not belonging to Rockwell Automation are property of their respective companies.

Summary of Changes

This publication contains new and revised information not in the last
release.

New and Revised Information

See the table for a summary of the major changes in this manual.

Chapter Revised to include

Chapter 6 - LED Status Indicators New column on recommended actions
Appendix A - Adapter Web Pages Latest adapter Web pages

Change Bars

Change bars (as shown with this paragraph) show the areas in this
manual that are different from previous editions and indicate the
addition of new or revised information.

1 Publication 1734-UM011C-EN-P - January 2006

2 Summary of Changes

Notes:

Publication 1734-UM011C-EN-P - January 2006

Table of Contents

Preface

About the Adapter

What This Preface Contains. . . . . . . . . . . . . . . . . . . . . . . . P-1

Who Should Use This Manual . . . . . . . . . . . . . . . . . . . . . . P-1

Common Techniques Used in This Manual. . . . . . . . . . . . . P-1

How To Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . P-2

About the Example Applications. . . . . . . . . . . . . . . . . . P-2

System Components. . . . . . . . . . . . . . . . . . . . . . . . . . . P-3

Where to Find More Information . . . . . . . . . . . . . . . . . . . . P-4

Terminology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-5

Chapter 1

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 1-1

Important Adapter Considerations . . . . . . . . . . . . . . . . . . . 1-1

Set the Chassis Size . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Adapter Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Empty Slots and RIUP Situations. . . . . . . . . . . . . . . . . . 1-2

Cycle Power To a System For the First Time . . . . . . . . . 1-4

Adapter Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Hardware/Software Compatibility . . . . . . . . . . . . . . . . . . . 1-5

What the Adapter Does. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Use of the Common Industrial Protocol (CIP). . . . . . . . . . . 1-5

Understand the Producer/Consumer Model . . . . . . . . . . . . 1-6

Specify the Requested Packet Interval (RPI) . . . . . . . . . . . . 1-6

Support of Rack-optimized and Direct Connections . . . . . . 1-7

Mix Rack-optimized and Direct Connections . . . . . . . . . 1-7

Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Determine Compatibility . . . . . . . . . . . . . . . . . . . . . . . 1-8

Understand Messaging . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Establish I/O Connections . . . . . . . . . . . . . . . . . . . . . . 1-8

Configure Autobaud. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Chapter 2

Install the Adapter

i Publication 1734-UM011C-EN-P - January 2006

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 2-1

Identify Adapter Components. . . . . . . . . . . . . . . . . . . . . . 2-1

Mount the Adapter on a DIN Rail Before Installing Modules 2-2

Mount (or Replace) the Adapter to an Existing System. . . . 2-3

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Mounting Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Table of Contents ii

Configure the Adapter for Your
EtherNet/IP Network

Configure the Adapter for Direct
Connection in RSLogix 5000
Software

Chapter 3

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 3-1

Configuration Requirements . . . . . . . . . . . . . . . . . . . . . . . 3-2

IP Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Gateway Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Subnet Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Set the Network Address . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Use the Rockwell BootP/DHCP Utility . . . . . . . . . . . . . . . . 3-8

Save the Relation List . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Use DHCP Software to Configure Your Adapter . . . . . . . . . 3-11

Chapter 4

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 4-1

Set Up the Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Create the Example Application. . . . . . . . . . . . . . . . . . . . . 4-2

Configure the I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Add the Local EtherNet/IP Bridge to the

I/O Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Add the POINT I/O Adapter to the I/O Configuration . . 4-7

Add the POINT I/O Modules to the I/O Configuration. . 4-10

Edit the Controller Tags. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Create the Ladder Program . . . . . . . . . . . . . . . . . . . . . . . . 4-18

Download the Program to the Controller . . . . . . . . . . . . . . 4-18

Verify the Module Chassis Size . . . . . . . . . . . . . . . . . . . . . 4-20

Configure the Adapter with Fixed IP Address . . . . . . . . . . . 4-22

Recover From an Overloaded Adapter . . . . . . . . . . . . . . . . 4-24

Configure the Adapter for Direct
Connection and Rack Optimization
in RSLogix 5000 Software

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Chapter 5

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 5-1

Set Up the Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Create the Example Application. . . . . . . . . . . . . . . . . . . . . 5-3

Configure the I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Add the Local EtherNet/IP Bridge to the

I/O Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

Add the POINT I/O Adapter to the I/O Configuration . . 5-7

Add the POINT I/O Module and Configure for Direction

Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

Add the POINT I/O Module and Configure For Rack

Optimization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

Download the Program to the Controller . . . . . . . . . . . . . . 5-17

Verify the Module Chassis Size . . . . . . . . . . . . . . . . . . . . . 5-18

Access Module Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

LED Status Indicators

Adapter Web Pages

Table of Contents iii

Chapter 6

What This Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . 6-1

Interpret the Status Indicators . . . . . . . . . . . . . . . . . . . . . . 6-1

Appendix A

What This Appendix Contains . . . . . . . . . . . . . . . . . . . . . . A-1

Work with the Home Page . . . . . . . . . . . . . . . . . . . . . . . . A-1

Work with the Diagnostics Pages. . . . . . . . . . . . . . . . . . . . A-3

Use the Diagnostic Overview Page . . . . . . . . . . . . . . . . A-4

Use the Network Settings Page. . . . . . . . . . . . . . . . . . . A-5

Use the Ethernet Statistics Page . . . . . . . . . . . . . . . . . . A-6

Use the I/O Connections Page . . . . . . . . . . . . . . . . . . . A-8

Use the Diagnostic Messaging Page . . . . . . . . . . . . . . . A-9

Work with the Configuration Pages . . . . . . . . . . . . . . . . . A-10

Use the Identity Page. . . . . . . . . . . . . . . . . . . . . . . . . A-11

Use the Network Configuration Page . . . . . . . . . . . . . A-12

Use the Services Page . . . . . . . . . . . . . . . . . . . . . . . . A-14

Work with the Browse Chassis Page . . . . . . . . . . . . . . . . A-15

Configure the RSLinx Ethernet
Communication Driver

1734 POINT I/O Module/RSLogix
5000 Controller Tag Reference

Appendix B

What This Appendix Contains . . . . . . . . . . . . . . . . . . . . . . B-1

Install the RSLinx Software . . . . . . . . . . . . . . . . . . . . . . . . B-1

Configure the AB_ETH Driver . . . . . . . . . . . . . . . . . . . . . . B-2

Configure the AB_ETH/IP Driver . . . . . . . . . . . . . . . . . . . . B-4

Appendix C

What This Appendix Contains . . . . . . . . . . . . . . . . . . . . . . C-1

1734 POINT I/O Catalog Numbers. . . . . . . . . . . . . . . . . . . C-1

Valid Number Ranges for RSLogix 5000 Data Types . . . . . . C-2

Digital 2 POINT Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

Digital 4 POINT Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4

Digital 2 POINT Output – Without Diagnostic Status. . . . . . C-5

Digital 2 POINT Output – With Over Load and Open Load

Diagnostic Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-6

Digital 2 POINT Output – With Over Load Diagnostic Status C-7
Digital 4 POINT Output – With Over Load and Open Load

Diagnostic Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8

Digital 4 POINT Output – With Over Load Diagnostic Status C-9

Analog 2 Channel Input . . . . . . . . . . . . . . . . . . . . . . . . . C-10

Analog 2 Channel Output . . . . . . . . . . . . . . . . . . . . . . . . C-19

Specialty I/O. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-23

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Table of Contents iv

Quick Start

Index

Appendix D

What This Appendix Contains . . . . . . . . . . . . . . . . . . . . . . D-1

Necessary Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . D-1

Configure the Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

Enter Adapter Properties . . . . . . . . . . . . . . . . . . . . . . . D-3

Add Another Module Under the Adapter. . . . . . . . . . . . D-4

Configure 1734 POINT I/O Modules . . . . . . . . . . . . . . . . . D-5

Configure an Ethernet Driver in RSLinx Software . . . . . . . . D-8

Launch RSLinx Software . . . . . . . . . . . . . . . . . . . . . . . . D-8

Add the AB_ETHIP-1 (EtherNet/IP) Driver . . . . . . . . . D-10

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Preface

What This Preface Contains

Who Should Use This Manual

This preface describes how to use this manual. See the table for a list
of where to find specific information within this chapter.

For Information About See Page

Who Should Use This Manual Preface 1
Common Techniques Used in This Manual Preface 1
How To Use This Manual Preface 2
About the Example Applications Preface 2
System Components Preface 3
Where to Find More Information Preface 4
Terminology Preface 5

We wrote this manual for control engineers and technicians who are
installing, configuring, and maintaining an EtherNet/IP control system
that communicates with POINT I/O modules through a 1734-AENT
adapter. We assume you have a good understanding of Ethernet
networks and the TCP/IP protocol.

Common Techniques Used in This Manual

ATTENTION

We use the following conventions throughout this manual.

• Numbered lists provide sequential steps.

• Bulleted lists provide information, not procedural steps.

TIP

You must use series C POINT I/O modules with
the 1734-AENT adapter. Series A or B POINT I/O
modules will not work with this adapter.

The screen captures shown in this manual are
pictures of the software’s actual screens.

This symbol identifies helpful tips.

1 Publication 1734-UM011C-EN-P - January 2006

2 Preface

How To Use This Manual

This manual contains an overview of the 1734-AENT adapter. It
describes how to install and configure the adapter and provides
examples showing how to use the adapter to communicate with
POINT I/O modules over an EtherNet/IP network.

About the Example Applications

This manual presents two example applications that demonstrate the
procedures for configuring and communicating with POINT I/O
modules using the 1734-AENT adapter. We intend the example
applications as building blocks to help you get your own system up
and running. We recommend that you set up and run the example
applications and use them as guides.

Here is the type of system you’ll be setting up.

1734-AENT

10.88.70.2

Slot 0 1 2 3

POINT I/O

Local
Chassis

Logix5555
Controller (slot 1)

Data

1756-ENBT

10.88.70.4 (slot 3)

10.88.70.26

Slot 0 1 2 3 4

Switch

Programming
Terminal

31393-M

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Preface 3

System Components

W e used the following components for the example applications. Y ou
need the same or similar components to set up your own control
system using POINT I/O modules on an EtherNet/IP network.

Quantity Product Name Catalog Number

Hardware

1 POINT I/O EtherNet/IP adapter 1734-AENT
1 POINT I/O 24V dc sink output module 1734-OV4E/C
1 POINT I/O relay output module 1734-OW2/C
1 DIN rail 199-DR1 or equivalent
1 ControlLogix chassis 1756-A4, (or 1756-A7, 1756-A13,1756-A17)
1 ControlLogix power supply 1756-PA72, (or 1756-PB72)
1 Logix5555 controller 1756-L55
1 ControlLogix EtherNet/IP bridge module 1756-ENBT
1 Personal computer that supports RSLogix 5000 software Any appropriate model running Windows NT 4.0, Service Pack 6A

or higher
1 Ethernet switch Refer to manufacturer’s specifications
1 24V dc power supply 1734-EP24DC

Associated media and connectors as needed

Software

1 RSLinx communications software,

version 2.31.00 or later

1 RSLogix 5000 programming software,

version 11.11 or later

9355-WAB, 9355-WABOEM, 9355-WABC

9324-RLD300ENE

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4 Preface

Where to Find More

Refer to the following Rockwell publications as needed for additional
help when setting up and using your EtherNet/IP network.

Information

For Information About See This Publication Publication Number

Using EtherNet/IP for industrial control EtherNet/IP Performance and Application Guide ENET-AP001
EtherNet/IP media EtherNet/IP Media Planning and Installation Guide ENET-IN001

Ethernet communication interface
modules

ControlLogix chassis ControlLogix Chassis Installation Instructions 1756-IN080 (series B)
ControlLogix power supplies ControlLogix Power Supplies Installation Instructions 1756-5.67 (PA72/PB72)
Logix5555 programmable controllers Logix5555 Controller User Manual 1756-UM523
SoftLogix5800 Controller SoftLogix5800 User Manual 1789-UM002 (L10, L30, L60)
ControlLogix EtherNet/IP bridge module

with firmware revision 2.3 or later
RSLogix 5000 programming software Getting Results with RSLogix 5000, version 3.2.1 or later 9399-RLD300GR
1734-AENT adapter POINT I/O EtherNet/IP Adapter Installation Instructions 1734-IN590
POINT I/O digital and analog modules

and PointBLOCK I/O modules

Ethernet Communication Interface Module Installation
Instructions

Ethernet Communication Interface Module User Manual 1756-UM051
Ethernet Communication Interface Module Release Notes 1756-RN053

ControlLogix EtherNet/IP Bridge Module Installation Instructions 1756-IN019

POINT I/O Digital and Analog Modules and PointBLOCK I/O
Modules User Manual

1756-IN053

1734-UM001

POINT I/O interface modules POINT I/O RS-232 ASCII Module User Manual 1734-UM009

POINT I/O RS-232 ASCII Module Installation Instructions 1734-IN588

POINT I/O expansion power supply POINT I/O 24V dc Expansion Power Supply Installation

Instructions
POINT I/O field potential distributor POINT I/O Field Potential Distributor Installation Instructions 1734-IN059
POINT I/O input modules POINT I/O 120V ac Input Module Installation Instructions 1734-IN010

POINT I/O Input Module Installation Instructions 1734-IN051
POINT I/O encoders/counter modules POINT I/O Encoders/Counter Module User Manual 1734-UM006

POINT I/O Encoders/Counter Module Installation Instructions 1734-IN005
POINT I/O 22V ac input module POINT I/O 220V ac Input Module Installation Instructions 1734-IN008
POINT I/O RTD and isolated

thermocouple input module
POINT I/O thermocouple and RTD input

module
POINT I/O IV2 and IV4 input module POINT I/O Input Module Installation Instructions 1734-IN052
POINT I/O 120/220V ac Output module POINT I/O 120/220V ac Output Module Installation Instructions 1734-IN009
POINT I/O protected output module POINT I/O Protected Output Module Installation Instructions 1734-IN056

POINT I/O voltage output analog
module

POINT I/O RTD and Isolated Thermocouple Input Module

Installation Instructions

Thermocouple and RTD Input Module User Manual 1734-UM004

POINT I/O Protected Output Module Installation Instructions

(OB2EP)

POINT I/O 2 Voltage Output Analog Module Installation

Instructions

1734-IN058

1734-IN011

1734-IN586

1734-IN002

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Preface 5

For Information About See This Publication Publication Number

POINT I/O protected sink output module POINT I/O Protected Sink Output Module Installation Instructions 1734-IN585
POINT I/O 2 relay output module POINT I/O 2 Relay Output Module Installation Instructions (OX2) 1734-IN587

POINT I/O 2 Relay Output Module Installation Instructions (OW2) 1734-IN055
POINT I/O synchronous serial interface

absolute encoder module
POINT I/O cold junction compensation

wiring base assembly
POINT I/O wiring base assembly POINT I/O Wiring Base Assembly Installation Instructions 1734-IN013
Very high speed-counter module POINT I/O Very High-speed Counter Module Installation

RSLinx RSLinx Getting Results Guide LNXENT-GR001

POINT I/O Synchronous Serial Interface Absolute Encoder

Module Installation Instructions

POINT I/O Cold Junction Compensation Wiring Base Assembly

Installation Instructions

Instructions

Very High-speed Counter Module User Manual 1734-UM003

TIP

Many of these publications are available online from:

1734-UM007

1734-IN583

1734-IN003

http://literature.rockwellautomation.com/

TIP

Rockwell Software products contain extensive
tutorials and help screens. We recommend that you
use the tutorials and help screens to learn about
these products.

For more information about Rockwell Software
products, visit the Rockwell Software internet site:

Terminology

http://www.software.rockwell.com

Refer to the table for the meaning of common terms.

This Term Means

BootP BootP (Bootstrap Protocol) is a low-level protocol that provides

configurations to other nodes on a TCP/IP network. BootP
configuration files let you automatically assign IP addresses to an
Ethernet module (you can also obtain subnet masks and gateway
addresses from BootP).

Bridge A node between two similar communication subnets where protocol

translation is minimal.

CIP Control and information protocol, the EtherNet/IP application layer

uses the producer/consumer networking model. In this model one
producer broadcasts (multicasts) the data once to all the consumers.
All consumers see the data simultaneously and may choose whether
to consume (receive) the data or not. Delivery time is consistent, no
matter how many consumers there are.

Connection The communication mechanism from the controller to another

module in the control system, usually used to exchange I/O data.

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6 Preface

This Term Means

consumer A destination device in the CIP networking model. See CIP.
CSMA/CD Carrier sense multiple access/collision detection is the access

method used in Ethernet. When a device wants to gain access to the
network, it checks to see if the network is quiet (senses the carrier).
If it is not, it waits a random amount of time before retrying. If the
network is quiet and two devices access the line at exactly the same
time, their signals collide. When the collision is detected, they both
back off and each waits a random amount of time before retrying.

Determinism The ability to predict when information will be delivered. Important in

time-critical applications.

DHCP The dynamic host configuration protocol is an Internet protocol,

similar to BootP, for automating the configuration of computers that
use TCP/IP. DHCP can be used to automatically assign IP addresses,
to deliver IP stack configuration parameters, such as the subnet mask
and default router, and to provide other configuration information,
such as the addresses for printer, time, and news servers.

The 1734-AENT factory default is DHCP enabled. When you apply
power , the module sends a message containing its hardware address
to any DHCP server on the network. The server(s) replies by sending a
message with an appropriate IP address for the adapter. The adapter
responds by acknowledging to a server that it will use the offered IP
address.

DNS The domain name system is a hierarchical, distributed method of

organizing the name space of the Internet. The DNS administratively
groups hosts into a hierarchy of authority that allows addressing and
other information to be widely distributed and maintained. A big
advantage to the DNS is that using it eliminates dependence on a
centrally-maintained file that maps host names to addresses.

Ethernet A physical layer standard using carrier sense multiple access with

collision detection (CSMA/CD) methods.

EtherNet/IP Ethernet industrial protocol applies a common application layer (CIP)

over Ethernet by encapsulating messages in TCP/UDP/IP.

Ethernet network A local area network designed for the high-speed exchange of

information between computers and related devices.

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Explicit messaging Non-time critical messaging used for device configuration and data

collection, such as downloading programs or peer -to-peer messaging
between two PLC units.

Full duplex A mode of communication that allows a device to send and receive

information at the same time, effectively doubling the bandwidth.

Fully qualified
domain name

A fully qualified domain name (FQDN) is a domain name that includes
all higher level domains relevant to the entity named. If you think of
the DNS as a tree-structure with each node having its own label, a
fully qualified domain name for a specific node would be its label
followed by the labels of all the other nodes between it and the root
of the tree. For example, for a host, a FQDN would include the string
that identifies the particular host, plus all domains of which the host
is a part, up to and including the top-level domain (the root domain is
always null). For example, PARIS.NISC.SRI.COM is a fully qualified
domain name for the host at 192.33.33.109.

Preface 7

This Term Means

Gateway A module or set of modules that allows communications between

nodes on dissimilar networks.

Hardware address

Each Ethernet device has a unique hardware address (sometimes
called a MAC address) that is 48 bits. The address appears as six
digits separated by colons (such as, xx:xx:xx:xx:xx:xx). Each digit has a
value between 0 and 255 (0x00 to 0xFF). This address is assigned in
the hardware and cannot be changed. The hardware address is
required to identify the device if you are using a BOOTP utility.

Host name The host name is the unique name for a computer within its domain.

It's always the first element of a full name, and, with its domain and
top-level domain suffix, creates the unique name of that computer on
the Internet. For example, let's say a trading website is
www.trading.com. The host name is www, which is not unique on
the web, but is unique within the trading domain.

The host name can also refer to the fully qualified domain name
(FQDN), or in this example, www.trading.com. Both naming methods
seem to be used interchangeably in various documents. For the
purposes of this document, the host name will refer to the FQDN, or
as in this example, www.trading.com.

Hub A central connecting device that joins devices together in a star

configuration. Hubs are generally not suitable for use in I/O control
systems, since they are time-critical applications that cannot tolerate

lost packets.
Implicit messaging Real-time messaging of I/O data.
IP Internet protocol that provides the routing mechanism for messages.

All messages contain not only the address of the destination station,

but the address of a destination network, which allows messages to

be sent to multiple networks within an organization or around the

world.
IP address A 32-bit identification number for each node on an Internet Protocol

network. These addresses are represented as four sets of 8-bit

numbers (numbers from 0 to 255), with decimals between them. Each

node on the network must have a unique IP address.
Latency The time between initiating a request for data and the beginning of

the actual data transfer.
Multicast In the CIP producer/consumer model, one producer multicasts

(broadcasts) the data once to all the consumers.
Producer The source of information in the CIP networking model. See CIP.
Rack-optimized A physical and logical collection of application modules.
Subnet mask An extension of the IP address that allows a site to use a single net

ID for multiple networks.
Switch A network device that cross connects devices or network segments.

A switch provides each sender/receiver the full network bandwidth

(2x in full duplex mode), reduces collisions, and increases

determinism.
TCP The transport control protocol is a more reliable but slower transport

protocol than UDP. It is used for explicit (not time critical) messaging

in EtherNet/IP.

Publication 1734-UM011C-EN-P - January 2006

8 Preface

This Term Means

TCP/IP The transmission control protocol/internet protocol is a

transport-layer protocol (TCP) and a network-layer protocol (IP)

commonly used for communication within networks and across

internetworks.
Transaction An exchange of request and data and response and data

.

UDP The user datagram protocol (UDP) is a transport protocol that

provides a very simple but fast capability to send datagrams between

two devices. It is used for I/O (implicit) messaging in EtherNet/IP.

Publication 1734-UM011C-EN-P - Januar y 2006

About the Adapter

Chapter

1

What This Chapter Contains

This chapter provides an overview of the 1734-AENT POINT I/O
EtherNet/IP adapter , its prima ry features, and how to use it. You need
to understand the concepts discussed in this chapter to configure your
adapter and use it in an EtherNet/IP control system. S ee the table for a
list of where to find specific information in this chapter.

For Information About See Page

Important Adapter Considerations 1-1 Set the Chassis Size 1-1 Adapter Replacement 1-2 Empty Slots and RIUP Situations 1-2 Cycle Power To a System For the First Time 1-4 Adapter Features 1-4 Hardware/Software Compatibility 1-5 What the Adapter Does 1-5 Use of the Common Industrial Protocol (CIP) 1-5 Understand the Producer/Consumer Model 1-6 Specify the Requested Packet Interval (RPI) 1-6 Support of Rack-optimized and Direct Connections 1-7 Mix Rack-optimized and Direct Connections 1-7

You must use series C POINT I/O modules with
the 1734-AENT adapter. Series A or B POINT I/O
modules will not work with this adapter.

Important Adapter

ATTENTION

Before you begin using your adapter, note the following important
considerations.

Considerations

Set the Chassis Size

The 1734-AENT POINT I/O adapter for EtherNet/IP requires
configuration of its chassis size before you can make any I/O
connections. The default setting for the chassis size is 1 slot, which
represents the adapter by itself.

1 Publication 1734-UM011C-EN-P - January 2006

1-2 About the Adapter

You must set the chassis size to a number equ a ling 1 slot for the
adapter plus 1 slot for each I/O module present in the adapter’s
backplane. For example, the adapter plus 4 I/O modules uses a
chassis size of 5. The adapter stores this chassis size setting in
non-volatile storage.

When the adapter’s non-volatile chassis size does not match the actual
number of modules present on its backplane, the adapter does not
make any I/O connections and an error occurs, as shown in the
Module Properties dialog.

Adapter Replacement

It is important to note that during a connection request from the
controller, the chassis size setting for a 1734-AENT adapter is not
communicated to the adapter. You must always set this chassis size
using a separate operation. This includes situations when you are
replacing an adapter. The adapter does not make any I/O connections
until it is configured with the appropriate chassis size.

Empty Slots and RIUP Situations

The POINT I/O system does not have the ability to detect an empty
terminal base. Because of this, there are numerous si tuations in which
you can potentially configure a system that is unusable or one that
exercises unintended control.

In an attempt to address these situations, you must observe the
following rules for POINT I/O system construction and the removal
and reinsertion of modules.

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About the Adapter 1-3

• A correct POINT I/O system does not have any empty terminal
bases.

• After you cycle power , the ad apter will not run any I/O un til the
number of modules comprising the chassis equals the stored
chassis size.

– Because the adapter cannot detect empty terminal bases, it

cannot assume any safe operation until there is a match
between the number of modules indicating their prese nce in
the chassis and what the adapter has saved in non-volatile
memory.

– Actual module identification (such as, electronic keying) is

done when connection establishment requests are received
from the controller or controllers.

• A module removed under power does not disrupt operation of
the other I/O modules.

– When you remove a module, the adapter determines what

changed.

– Whenever you remove a module with an active connection

from the POINT I/O system, the adapter indicates this by
flashing the POINTBus Status LED red and reports a minor
recoverable fault.

• If more than one contiguous module is removed under power,
connections to all modules in the contiguous missing module set
are disallowed until all modules are replaced. Because the
adapter cannot detect an empty base, it does not know the
physical positioning of the modules until all the missing
modules are replaced.

• If a module separating two sets of contiguous missing modules
is removed, the two sets merge into a single set. All the modules
must be replaced before connections are permitted to any
module in the set.

• If modules of different types are removed and returned to the
wrong locations, attempts to connect to these modules will fail
during verification of the electronic ID (providing that keying
has not been disabled).

• If modules of the same type are removed and returned to the
wrong locations, they accept connections from the controller or
controllers and reconfigure with the co rrect data o nce the y pass
their electronic keying check.

• These removal and return situations exist whether the system is
under power or not. If the system is under power, the situation
arises immediately. If the system is not under power, the
situation arises in the next power cycle.

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1-4 About the Adapter

Cycle Power To a System For the First Time

When you power POINT I/O for the first time, the adapter must assign
addresses to every module in the backplane. POINT I/O modules all
ship configured at the same address.

When you first apply power, we expect that all but one module on
the backplane exhibits a solid red Module Status LED.

One by one the adapter resets these modules and addr esses them
appropriately. The amount of time that this operation takes is
proportional to the size of your POINT I/O system.

Adapter Features

The 1734-AENT adapter’s features include:

• EtherNet/IP messages encapsulated within standard
TCP/UDP/IP protocol

• Common application layer with ControlNet and DeviceNet
networks

• Interfacing via Category 5 rated twisted pair cable

• Half/full duplex 10 Mbit or 100 Mbit operation

• DIN rail mounting

• Communication to and from other POINT I/O modules on the

same DIN rail

• Communication supported by RSLinx software

• IP address assigned via standard BootP or DHCP tools

• I/O configuration via RSLogix 5000 software

• No network scheduling required

• No routing tables required

• Support of connections from multiple controllers simultaneously

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About the Adapter 1-5

Hardware/Software Compatibility

What the Adapter Does

The 1734-AENT adapter and the applications described in this manual
are compatible with the following firmware revisions and software
releases. Contact Rockwell Automation if you need software or
firmware upgrades to use this equipment.

Product Firmware Revision/

Software Release

1734-AENT adapter 1.xx or later
1756-ENBT module 2.3 or later
Logix 5555 controller 11 or later
RSLogix 5000 software 11.11 or later
RSLinx software 2.3.1 or later

The 1734-AENT adapter performs the following primary tasks:

• Control of real-time I/O data (also kno wn as implicit messaging)

- the 1734-AENT adapter serves as a bridge between POINT I/O
modules and the network

L

E

5

N

5

B

5

T

5

EtherNet/IP Network

Use of the Common Industrial Protocol (CIP)

A

POINT

E

I/O

N
T

E
N
B
T

ControlLogix

I/O

Other

Network

Devices

• Support of messaging data for configuration and programming
information (also known as explicit messaging)

The 1734-AENT adapter uses the Common Industrial Protocol (CIP).
CIP is the application layer protocol specified for EtherNet/IP, the
Ethernet Industrial Protocol, as well as for ControlNet and DeviceNet
networks. 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.

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1-6 About the Adapter

This has the following significant benefits.

• You do not need to configure routing tables in the bridging
modules, which greatly simplifies maintenance and module
replacement.

• Y ou maintai n full control over the route taken by each message,
which enables you to select alternative paths for the same end
device.

Understand the Producer/Consumer Model

Specify the Requested Packet Interval (RPI)

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 chosen during
configuration and where on the network 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
and other devices over the EtherNet/IP network. This data exchange
conforms to the producer/consumer model.

The RPI is the update rate 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).

Publication 1734-UM011C-EN-P - Januar y 2006

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.

Use RPIs only for devices that exchange data. For example, a
ControlLogix EtherNet/IP bridge module in the same chassis as the
controller does not require an RPI, because it is not a data-produ cin g
member of the system. Its use is only as a bridge to remote racks.

About the Adapter 1-7

Support of Rack-optimized and Direct Connections

The 1734-AENT adapter supports both direct and rack-optimized
connections. A direct connection is a real-time data transfer link
between the controller and whatever module occupies the slot that
the configuration data references. Direct co nnection messaging occurs
at a cyclic rate specified by the RPI during configuration. A
rack-optimized connection is a grouping of data from more than one
I/O module into a single block of data sent over a single connection
at the same data rate.

Rack-optimized connectio ns reduce the total number of connections
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 set up a system that contains 8 digital I/O modules
interfaced to a 1734-AENT adapter . If you use direct connections to
transfer data to each of the these I/O modules, you need 8
connections to transfer all of the data, one to each of the 8 I/O
modules. If you use a rack-optimized connection to transfer the data,
you only need a single connection – the connection to the 1734-AENT
adapter.

IMPORTANT

See the EtherNet/IP Performance and Application Guide, publication
number ENET-AP001, for more information on connections.

Although rack-optimized connections offer an
efficient way to use resources, there are a few
limitations on their use:

• You can us e on ly rack-optimized connections
to send data to and from digital I/O modules.
Analog or speciality I/O requires direct
connections.

• All data is sent at the same time as the RPI rate
of the 1734-AENT adapter.

Mix 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 communicate at the rate of the RPI configured for
the 1734-AENT adapter. I/O modules configured for direct
communication communicate at their own set RPIs and ignore the
1734-AENT adapter’s RPI.

Publication 1734-UM011C-EN-P - January 2006

1-8 About the Adapter

Before You Begin

To effectively use your adapter, note the following considerations.

Determine Compatibility

If using the adapter with a 1756-ENBT module or 1788-ENBT module,
use the following required firmware revisions for these bridge
modules:

• 1756-ENBT firmware revision 2.3 or later

• 1788-ENBT firmware revision 1.33 or later

If you use the BootP Utility to assign IP addresses to the adapter, use
revision 2.3.2 or later.

Understand Messaging

Class 3 (Explicit Message) requests through the 1734-AENT adapter to
a specific POINT I/O module may not always receive a response from
the I/O modules. In the case where the I /O module d oes no t reply to
the request, the adapter responds with an error code indicating a
timout.

Establish I/O Connections

When you apply power to a POINT I/O system and establish I/O
connections, the outputs transition to the Idle state, applying Idle state
data before going to RUN mode. This occurs even when the controller
making the connection is already in RUN mode.

Configure Autobaud

The adapter cannot reconfigure an I/O module that you previously
configured to operate at a fixed communication rate. When you reuse
a POINT I/O module from another POINT I/O system, configure the

module to autobaud before using it with the adapter.

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Install the Adapter

Chapter

2

What This Chapter Contains

This chapter describes how to physically install the adapter on the
DIN rail and connect it to the EtherNet/IP network. The following
table lists where to find specific information.

Topic See Page

Identify Adapter Components 2-1 Mount the Adapter on a DIN Rail Before Installing Modules 2-2 Mount (or Replace) the Adapter to an Existing System 2-3 Wiring 2-4 Mounting Dimensions 2-5

ATTENTION

You must use series C POINT I/O modules with
the 1734-AENT adapter. Series A or B POINT I/O
modules will not work with this adapter.

Identify Adapter

Use the figure to identify the external features of the adapter.

Components

LED Indicators

Node Address
Thumbwheel

EtherNet
Network
RJ45
Connector

1 Publication 1734-UM011C-EN-P - January 2006

DIN Rail
Locking
Screw (orange)

Safety End Cap

RTB
Removal Handle

Removable
Terminal
Block (RTB)

31533-M

2-2 Install the Adapter

Mount the Adapter on a DIN

Use the following procedure to mount the adapter on a new system
before you install any I/O modules.

Rail Before Installing
Modules

43520

1. Position the adapter vertically above the DIN rail.

2. Press down firmly to install the adapter on the DIN rail, noting

that the locking mechanism locks the adapter to the DIN rail.

3. Set the network address thumbwheel switches to the desired
value (see Set the Network Address section in this manual).

WARNING

4. Slide the safety end cap up to remove it.

This exposes the backplane and power interconnections.

ATTENTION

If you connect or disconnect the Ethernet cable with
power applied to this module or any device on the
network, an electrical arc can occur. This could
cause an explosion in hazardous location
installations.

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

Do not discard the adapter’s end cap. Use this end
cap to cover the exposed interconnections on the
last mounting base on the DIN rail. Failure to do
so could result in equipment damage or injury
from electric shock.

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Install the Adapter 2-3

Mount (or Replace) the Adapter to an Existing System

Follow these steps to mount (or replace) an adapter.

1. Remove the existing adapter (if there is one) from the DIN rail
as follows:

a. Pull up on the RTB removal handle to remove the terminal

block.
b. Disconnect the Ethernet connector from the adapter.
c. Remove the adjacent module from its base.
d. Use a small-bladed screwdriver to rotate the DIN-RAIL locking

screw to a vertical position.

This releases the locking mechanism.

e. Lift straight up to remove.

2. For the replacement adapter, slide the safety end cap up to
remove.

This exposes the backplane and power connections.

3. Position the replacement adapter vertically above the DIN rail.

4. Make certain the DIN rail lock is in the horizontal position.

5. Slide the adapter down, allowing the interlocking side pieces to

engage the adjacent module.

6. Press firmly to seat the adapter on the DIN rail.

The adapter locking mechanism snaps into place.

7. Replace the adjacent module in its base.

8. Reconnec t the Ethernet cable to the adapter.

9. Set the network address thumbwheel switches to the value used

on the replaced module (see Set the Network Address in this
manual).

10. Insert the end of the terminal block (RTB) opposite the handle
into the base unit.

This end has a curved section that engages with the wiring base.

11. Rotate the terminal block into the wiring base until it locks itself
into place.

Publication 1734-UM011C-EN-P - December 2006

2-4 Install the Adapter

G

N
C
C
V

12/24V dc

Wiring

Refer to the illustration to wire the adapter.

WARNIN

If you connect or disconnect wiring while
the field-side power is on, an electrical a rc
can occur. This could cause an explosion
in hazardous location installations.

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

Network Address
Thumbwheels

Ethernet RJ-45 Connector

Module Status
Network Activity Status

Network Status
POIN T B us St a tus

System Power
Field Power

C = No Connection
HAS GND = Chassis Ground
= Common
= Supply

ATTENTION

NC
CHAS GND

C

V

Do not connect
120/240V ac power to
this supply.

0

NC

2

Chas
Gnd

4

This dc supply will be
connected to the

V dc

6

internal power bus.

NC = No Connection C = Common
Chas GND = Chassis Ground V = Supply

43264

C

V

NC

Chas
Gnd

C

V

1

3

5

7

Publication 1734-UM011C-EN-P - December 2006

Install the Adapter 2-5

Mounting Dimensions

Refer to the figure for mounting dimensions.

millimeters

(inches)

36.51
(1.44)

54.9
(2.16)

76.5
(3.0)

133.4
(5.25)

B

A

43520

A = DIN rail

B = Secure DIN rail approximately every 200 mm (7.8 in.)

1734-AENT

76.2H x 54.9W x 133.4D
(3.0H x 2.16W x 5.25D)

Publication 1734-UM011C-EN-P - December 2006

2-6 Install the Adapter

Notes:

Publication 1734-UM011C-EN-P - December 2006