Rockwell Automation 1794-AENTR, 1794-AENTRXT User Manual

User Manual

FLEX I/O Dual Port EtherNet/IP Adapter Modules

Catalog Numbers

1794-AENTR, 1794-AENTRXT

Important User Information

IMPORTANT

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 your local Rockwell Automation sales office or online at http://www.rockwellautomation.com/literature/ 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: 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.

available from

) describes some

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

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.

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

Allen-Bradley, Rockwell Automation, FLEX I/O, ControlLogix, RSlogix, R SLinx, and TechConnect are trademarks of Rockwell Automation, Inc.

Trademarks not belonging to Rockwell Automation are property of their respective companies.

Preface

Read this preface to familiarize yourself with the rest of the manual. It provides information concerning:

• who should use this manual

• the purpose of this manual

• related documentation

• conventions used in this manual

Who Should Use this Manual

Purpose of this Manual

This manual is intended for control engineers and technicians who are installing, configuring, and maintaining a redundant EtherNet/IP control system that communicates with FLEX I/O through a 1794-AENTR or 1794-AENTRXT adapter.

We assume you have a good understanding of Ethernet and the TCP/IP protocol. If you do not, refer to your software user manuals or online help before attempting to use these modules.

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.

For Information About See

Overview of FLEX I/O and Your Redundant EtherNet/IP Adapter Module

Install Your FLEX I/O Adapter Chapter 2 Configure the Adapter for Your EtherNet/IP Network Chapter 3 Rack Optimized Discrete I/O Chapter 4 Analog I/O with Direct Connection Chapter 5

Chapter 1

Interpret Status Indicators Appendix A Specifications Appendix B Configure the RSLinx Ethernet Communication Driver Appendix C Adapter Web Dialogs Appendix D

iii Publication 1794-UM066A-EN-P - February 2012

iv Preface

Common Techniques Used in this Manual

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The following conventions are used throughout this manual:

• Bulleted lists such as this one provide information, not procedural steps.

• Numbered lists provide sequential steps or hierarchical information.

• Italic type is used for emphasis.

Preface

Who Should Use this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

Purpose of this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

Related Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv

Common Techniques Used in this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . iv

Table of Contents

Chapter 1 Overview of FLEX I/O and Your Redundant EtherNet/IP Adapter Module

Install Your FLEX I/O Adapter

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

The FLEX I/O System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Adapter Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Types of Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Hardware and Software Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

What the Adapter Does. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Use of the Control and Information Protocol (CIP) . . . . . . . . . . . . . . . . . 3

Understanding the Producer/Consumer Model. . . . . . . . . . . . . . . . . . . . . . 3

Specifying the Requested Packet Interval (RPI) . . . . . . . . . . . . . . . . . . . . . . 4

Support of Rack Optimized and Direct Connections . . . . . . . . . . . . . . . . . 4

Mixing Rack Optimized and Direct Connections . . . . . . . . . . . . . . . . 5

Chapter Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Chapter 2

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Module Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Mount Your Adapter on a DIN Rail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Mount on a Panel or Wall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Connect Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Set the Network Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Mounting Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Chapter 3 Configure the Adapter for Your EtherNet/IP Network

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Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Configuration Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Gateway Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Subnet Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Use the Rockwell BootP/DHCP Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Save the Relation List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Configure Your Adapter using DHCP Software . . . . . . . . . . . . . . . . . . . . 21

Chapter Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

vi Table of Contents

Rack Optimized Discrete I/O

Analog I/O with Direct Connection

Chapter 4

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Set Up the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Create the Example Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Configure the I/O. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Add the Local EtherNet/IP Bridge to the I/O Configuration . . . . 26

Add the FLEX I/O Adapter to the I/O Configuration. . . . . . . . . . . 27

Add the FLEX I/O Modules to the I/O Configuration . . . . . . . . . . 29

Create the Ladder Program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Download the Program to the Controller. . . . . . . . . . . . . . . . . . . . . . . 34

Test the Example Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Chapter Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Chapter 5

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Set Up the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Create the Example Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Add the Analog Modules to the I/O Configuration . . . . . . . . . . . . . . . . . 39

Add the Analog Input Module to the I/O Configuration . . . . . . . . 39

Add the Analog Output Module to the I/O Configuration. . . . . . . 42

Edit the Controller Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Modify the Ladder Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Download the Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Test the Example Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Chapter Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Interpret Status Indicators

Specifications

Configure the RSLinx Ethernet Communication Driver

Adapter Web Dialogs

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Appendix A

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

1794-AENTR, 1794-AENTRXT Module. . . . . . . . . . . . . . . . . . . . . . 51

Chapter Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

AppendixB

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Appendix C

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

About the Etherner Communication Driver. . . . . . . . . . . . . . . . . . . . . . . . 57

Install the RSLinx Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Configure the AB_ETH Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Appendix D

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Table of Contents vii

Work with the Home Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Work with the Diagnostics Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Use the Diagnostic Overview Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Use the Network Settings Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Use the Ethernet Statistics Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Use the I/O Connections Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Work with the Configuration Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Use the Device Identity Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Use the Network Configuration Page . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Use the Device Services Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Index

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viii Table of Contents

Notes:

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Chapter

Adapter I/O moduleTerminal base

1113

1112

45821

Overview of FLEX I/O and Your Redundant EtherNet/IP Adapter Module

Overview

The FLEX I/O System

This chapter provides a description of the FLEX I/O dual port EtherNet/IP adapter modules and an overview of how they communicate with programmable controllers.

Topic Page

The FLEX I/O System 1 Adapter Features 2 Types of Adapters 2 Hardware and Software Compatibility 2 What the Adapter Does 3 Use of the Control and Information Protocol (CIP) 3 Understanding the Producer/Consumer Model 3 Specifying the Requested Packet Interval (RPI) 4 Support of Rack Optimized and Direct Connections 4

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. The FLEX I/O system contains the following 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 needed to perform

specific functions related to your application

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2 Overview of FLEX I/O and Your Redundant EtherNet/IP Adapter Module

The FLEX system consists of an adapter module, terminal base unit, DIN rail, power supply, and adapter cabling components. You can use up to 8 terminal bases per adapter module.

For detailed instructions on how to set up and install your module, refer to the topic, Install Your FLEX I/O Adapter on page 7.

Adapter Features

Types of Adapters

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

• DIN rail mounting

• 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 RSLogix 5000 software

• no network scheduling required

• no routing tables required

The adapter refers to the following catalogs.

Catalog Voltage Module

Capacity

1794-AENTR 24V DC 8, max. Dual port EtherNet/IP adapter 1794-AENTRXT 24V DC 8, max. Dual port EtherNet/IP adapter with extended

Description

temperatures range

Hardware and Software Compatibility

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The adapters and the applications described in this manual are compatible with the following firmware versions and software releases. Contact Rockwell Automation if you need software or firmware upgrades to use this equipment.

Hardware and Software Compatibility

Product Firmware Version/

Software Release

1794-AENTR/1794-AENTRXT adapter 1.xx or higher Logix 557x Controller 20 or higher RSLogix 5000 Software 20 or higher RSLinx software 2.59 or higher

Overview of FLEX I/O and Your Redundant EtherNet/IP Adapter Module 3

L 5 5 7 2

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

What the Adapter Does

Use of the Control and Information Protocol (CIP)

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).

The 1794-AENTR and 1794-AENTRXT adapters use the Control and Information Protocol (CIP). CIP is the application layer protocol 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 taken by each message, which

enables you to select alternative paths for the same end device.

Understanding 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 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.

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4 Overview of FLEX I/O and Your Redundant EtherNet/IP Adapter Module

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.

Specifying the Requested Packet Interval (RPI)

Support of Rack Optimized and Direct Connections

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). 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 50ms 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 module 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.

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 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.

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Rack optimized connections 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 have set up a system that contains 8 discrete I/O modules interfaced to an 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

Overview of FLEX I/O and Your Redundant EtherNet/IP Adapter Module 5

IMPORTANT

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 adapter.

Refer to the EtherNet/IP Embedded Switch Technology Application Guide, publication number ENET-AP005

Mixing Rack Optimized and Direct Connections

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 at the same time at the RPI rate of the adapter.

, for more information on connections.

Chapter Summary

You can mix communication formats for different I/O modules communicating through the same adapter. I/O modules set up to use rack optimization will communicate at the rate of the requested packet interval (RPI) configured for the 1794-AENTR or 1794-AENTRXT adapter. I/O modules configured for direct communication will communicate at their own set RPIs and ignore the adapter RPI.

This chapter briefly described the FLEX I/O system, the FLEX I/O dual port EtherNet/IP adapters, and the basic adapter features. Read the next chapter to learn how to physically install the adapters and connect them to the EtherNet/IP network.

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6 Overview of FLEX I/O and Your Redundant EtherNet/IP Adapter Module

Notes:

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Install Your FLEX I/O Adapter

45821

Chapter

Overview

Module Components

This chapter describes how to physically install the 1794-AENTR or 1794-AENTRXT adapter on the DIN rail and connect it to the EtherNet/IP network. The following table lists where to find specific information.

Topic Page

Module Components 7 Mount Your Adapter on a DIN Rail 8 Mount on a Panel or Wall 9 Connect Wiring 11 Set the Network Address 12 Mounting Dimensions 13

Use the following illustration to identify the external features of the FLEX I/O EtherNet/IP adapter.

Dual Port EtherNet/IP Adapter – 1794-AENTR, 1794-AENTRXT

Component Identification

1 Dual Port EtherNet/IP adapter 6 Module locking tab 2 FlexBus connector 7 Network cable RJ45 connectors

3 24V common connections 8 MAC ID label 4 24V DC connections 9 Status indicators 5 IP address switches

(underside)

8 Install Your FLEX I/O Adapter

45822

A B

Mount Your Adapter on a DIN Rail

Follow these steps to mount the adapter on a new system before installing any I/O modules.

ATTENTION: During mounting of all devices, be sure that all debris (for example, metal chips, wire strands) is kept from falling into the module. Debris that falls into the module could cause damage on power up.

ATTENTION: Do not remove or replace an Adapter Module while power is applied. Interruption of the backplane can result in unintentional operation or machine motion.

1. Position the adapter module (A) on an IEC standard (35 x 7.5 x 1 mm) top-hat DIN rail (B) at a slight angle (DIN rail: Allen-Bradley part number 199-DR1; 46277-3; EN50022).

2. Hook the lip on the rear of the adapter onto the top of the DIN rail, and pivot the adapter module onto the rail.

3. Press the adapter module down onto the DIN rail until flush. Locking tab (C) snaps the adapter into position and locks it onto the DIN rail.

4. If the adapter module does not lock in place, use a screwdriver or similar device to move the locking tab down while pressing the adapter module flush onto the DIN rail, and release the locking tab to lock the adapter module in place. If necessary, push up on the locking tab to lock.

5. Connect the adapter wiring as shown in the Connect Wiring diagram.

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Install Your FLEX I/O Adapter 9

Mount on a Panel or Wall

If mounting this adapter to a panel or wall, refer to publication 1794-TD013, Panel Mounting Kit, Cat. No. 1794-NM1.

ATTENTION: If you insert or remove the module while backplane power is on, 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.

WARNING: When used in a Class I, Division 2, hazardous location, this equipment must be mounted in a suitable enclosure with proper wiring method that complies with the governing electrical codes.

Mount or Replace the Adapter on an Existing System

1. Disconnect any wiring jumpered to the adjacent terminal base.

2. Remove the Ethernet connectors from the bottom of the adapter.

WARNING: If you connect or disconnect the communication cable with power applied to the adapter 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.

3. Disconnect any user power wiring connections to the adapter.

4. Open the module latching mechanism and remove the module from the

base unit to which the adapter will be attached.

5. Push the FlexBus connector toward the right side of the terminal base to unplug the backplane connection.

ATTENTION: Make certain the FlexBus connector is completely clear of the adapter. The slide must be completely to the right and the raised spot on the slide visible.

6. Release the locking tab and remove the adapter module.

Before installing the new adapter, notice the notch on the right rear of the adapter. This notch accepts the hook on the terminal base unit. The notch is open at the bottom. The hook and adjacent connection point keep the

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10 Install Your FLEX I/O Adapter

terminal base and the adapter tight together, reducing the possibility of a break in communication over the backplane.

7. Complete the adapter mounting as shown below.

Push down and in at the same time to lock the adapter to the DIN rail.

If the adapter does not lock in place, use a screwdriver or similar device to move the locking tab down while pressing the adapter flush onto the DIN rail, and release the locking tab to lock the adapter module in place. If necessary, push up on the locking tab to lock.

When the adapter is locked onto the DIN rail, gently push the FlexBus connector into the adapter to complete the backplane.

8. Reinstall the module in the adjacent terminal base unit.

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Connect Wiring

45823

A B

Install Your FLEX I/O Adapter 11

WARNING: If you connect or disconnect wiring while the

field-side power is on, 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.

1. Connect an Ethernet network cable to the RJ45 connector (A).

2. Connect the redundant Ethernet network cable to the RJ45

connector (B).

ATTENTION: When connecting wiring, torque terminal screws C, D, E and F to 0.8 Nm (7 lb-in.).

ATTENTION: If multiple power sources are used, do not exceed the specified isolation voltage.

ATTENTION: Power wiring must be less than 10 m (32.8 ft.) in length.

ATTENTION: Do not wire more than two conductors on any single terminal.

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12 Install Your FLEX I/O Adapter

45824

Press the + or - buttons to change the numbers

3. Connect 24V DC common to the left side of the upper connector, terminal F.

4. Connect +24V DC input power to the left side of the lower connector, terminal C.

5. Use connections D and E to pass +24V DC common (E) and 24V DC power (D) to the next module in the series (if required).

Set the Network Address

The adapter ships with the thumbwheel switches set to 999 and DHCP enabled. You can set the network Internet Protocol (IP) address in these ways:

• Use the thumbwheel switches on the module.

• Use a Dynamic Host Configuration Protocol (DHCP) server, such as Rockwell Automation DHCP.

• Retrieve the IP address (if previously set) from nonvolatile memory.

The adapter reads the thumbwheel switches first to determine if the switches are set to a valid number. You set the node address by using the three-position thumbwheel switch. Press the + or - buttons to change the number. Valid settings are 001…254.

When the switches are set to a valid number, the adapter IP address is

192.168.1.xxx (where xxx represents the number set on the switches). The adapter subnet mask is 255.255.255.0 and the gateway address is set to 0.0.0.0. The adapter does not have a host name assigned, or use any Domain Name System when using the thumbwheel settings.

If you set the switches to an invalid number (such as 000, or a value greater than

254), the adapter checks to see if you enabled DHCP.

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Mounting Dimensions

45826

1794-AENTR shown

Millimeters (Inches)

80.4 (3.16)

87.4 (3.44)

94 (3.70)

1794-AENTR, 1794-AENTRXT

87.4 H x 94W x 92D (344H x 3.7W x 3.6D)

50 (1.96)

30.4 (1.19)

The module has the following mounting dimensions.

Install Your FLEX I/O Adapter 13

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14 Install Your FLEX I/O Adapter

Notes:

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Configure the Adapter for Your

IMPORTANT

EtherNet/IP Network

Chapter

Overview

Configuration Requirements

This chapter describes how to configure the 1794-AENTR or 1794-AENTRXT adapter module for the ControlLogix system.

Topic Page

Configuration Requirements IP Address Gateway Address Subnet Mask Use the Rockwell BootP/DHCP Utility Configure Your Adapter using DHCP Software

Before you can use your 1794-AENTR or 1794-AENTRXT adapter, you must configure its IP address, and optionally, its subnet mask and gateway address. You can use the Rockwell BootP/DHCP utility to perform the configuration. You can also use generic BootP software or, within some limitations, a DHCP server.

When using the BootP protocol, you must enter the Ethernet hardware address of your adapter. Rockwell assigns each 1794-AENTR or 1794-AENTRXT adapter a unique 48-bit hardware address at the factory. The address is printed on a label on the front of your 1794-AENTR or 1794-AENTRXT adapter. It consists of six hexadecimal digits separated by colons. This address is fixed by the hardware and cannot be changed.

If you change or replace the 1794-AENTR or 1794-AENTRXT adapter, you must enter the new Ethernet hardware address of the adapter when you configure the new adapter.

15 15 16 17 18

IP Address

The IP address identifies each node on the IP network (or system of connected networks). Each TCP/IP node on a network (including the 1794-AENTR or 1794-AENTRXT adapter) must have a unique IP address.

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16 Configure the Adapter for Your EtherNet/IP Network

Class A

Class B

Class C

Net ID

Host ID

1 0

1 1 0

EXAMPLE

TIP

The IP address is 32 bits long and has a Net ID part and a Host ID part. Networks are classified A, B, C, (or other). The class of the network determines how an IP address is formatted.

You can distinguish the class of the IP address from the first integer in its dotted-decimal IP address as follows:

Range of first integer Class Range of first integer Class

0…127 A 192…223 C

128…191 B 224…255 other

Each node on the same physical network must have an IP address of the same class and must have the same Net ID. Each node on the same network must have a different Host ID thus giving it a unique IP address.

IP addresses are written as four decimal integers (0-255) separated by periods where each integer gives the value of one byte of the IP address.

For example, the 32-bit IP address:

10000000 00000001 00000000 00000001 is written as

128.1.0.1.

Contact your network administrator or the Network Information Center for a unique fixed IP address to assign to your module.

Gateway Address

The Gateway Address is the default address of a network. It provides a single domain name and point of entry to the site. Gateways connect individual physical networks into a system of networks. When a node needs to communicate with a node on another network, a gateway transfers the data between the two

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Configure the Adapter for Your EtherNet/IP Network 17

EXAMPLE

Network 1

Network 2

128.2.0.3

128.1.0.2

128.1.0.1

128.2.0.1

128.2.0.2

11111111 11111111 11000000 00000001 = 255.255.192.0

These two bits of the host ID used to extend the net ID

networks. The following figure shows gateway G connecting Network 1 with Network 2.

When host B with IP address 128.2.0.1 communicates with host C, it knows from C’s IP address that C is on the same network. In an Ethernet environment, B then resolves C’s IP address into a hardware address (MAC address) and communicates with C directly.

When host B communicates with host A, it knows from A’s IP address that A is on another network (the net IDs are different). In order to send data to A, B must have the IP address of the gateway connecting the two networks. In this example, the gateway’s IP address on Network 2 is 128.2.0.3.

The gateway has two IP addresses (128.1.0.2 and 128.2.0.3). The first must be used by hosts on Network 1 and the second must be used by hosts on Network 2. To be usable, a host’s gateway must be addressed using a net ID matching its own.

Subnet Mask

The subnet mask is used for splitting IP networks into a series of subgroups, or subnets. The mask is a binary pattern that is matched up with the IP address to turn part of the Host ID address field into a field for subnets.

Take Network 2 (a Class B network) in the previous example and add another network. Selecting the following subnet mask would add two additional net ID bits, allowing for four logical networks:

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18 Configure the Adapter for Your EtherNet/IP Network

128.2.64.1

Network 1

Network 2.1

Network 2.2

128.1.0.1

128.1.0.2

128.2.128.3

128.2.128.1

128.2.128.2

128.2.64.3

Two bits of the Class B host ID have been used to extend the net ID. Each unique combination of bits in the part of the Host ID where subnet mask bits are 1 specifies a different logical network.

The new configuration is:

Use the Rockwell BootP/DHCP Utility

A second network with Hosts D and E was added. Gateway G2 connects Network 2.1 with Network 2.2. Hosts D and E use Gateway G2 to communicate with hosts not on Network 2.2. Hosts B and C use Gateway G to communicate with hosts not on Network 2.1. When B is communicating with D, G (the configured gateway for B) routes the data from B to D through G2.

The Rockwell BootP/DHCP utility is a stand alone program that incorporates the functionality of standard BootP/DHCP software with a user-friendly graphical interface. It is located in the Utils directory on the RSLogix 5000 installation CD. The module must have DHCP enabled (factory default and the network address switches set to an illegal value) to use the utility.

To configure your module using the BootP/DHCP utility, perform the following steps:

1. Run the BootP/DHCP software.

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Configure the Adapter for Your EtherNet/IP Network 19

The BOOTP/DHCP Request History dialog appears showing the hardware addresses of devices issuing BootP/DHCP requests.

2. Double-click the hardware address of the device you want to configure.

The New Entry dialog appears showing the device’s Ethernet Address (MAC).

3. Enter the IP Address you want to assign to the device and click OK.

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