Rockwell Automation AB Quality Allen-Bradley MicroLogix... User manual

MicroLogix™
Ethernet Interface
1761-NET-ENI and
1761-NET-ENIW
User Manual

Important User Information
Solid state equipment has operational characteristics differing from those of
electromechanical equipment. Safety Guidelines for the Application,
Installation and Maintenance of Solid State Controls (Publication SGI-1.1
available from your local Rockwell Automation sales office or online at
http://www.ab.com/manuals/gi) describes some important differences
between solid state equipment and hard-wired electromechanical devices.
Because of this difference, and also because of the wide variety of uses for
solid state equipment, all persons responsible for applying this equipment
must satisfy themselves that each intended application of this equipment is
acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for
indirect or consequential damages resulting from the use or application of
this equipment.
The examples and diagrams in this manual are included solely for illustrative
purposes. Because of the many variables and requirements associated with
any particular installation, Rockwell Automation, Inc. cannot assume
responsibility or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to
use of information, circuits, equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without
written permission of Rockwell Automation, Inc. is prohibited.
Throughout this manual we use notes to make you aware of safety
considerations.
WARNING Identifies information about practices or circumstances
that can cause an explosion in a hazardous environment,
which may lead to personal injury or death, property
damage, or economic loss.
IMPORTANT Identifies information that is critical for successful
application and understanding of the product.
ATTENTION Identifies information about practices or circumstances
that can lead to personal injury or death, property
damage, or economic loss. Attentions help you:
•identify a hazard
•avoid a hazard
•recognize the consequence
SHOCK HAZARD Labels may be located on or inside the drive to alert
people that dangerous voltage may be present.
BURN HAZARD Labels may be located on or inside the drive to alert
people that surfaces may be dangerous temperatures.

1Publication 1761-UM006E-EN-P - August 2005
Summary of Changes
The information below summarizes the changes to this manual since
the last printing.
To help you find new and updated information in this release of the
manual, we have included change bars as shown to the right of this
paragraph.
Information on 1761-NET-ENI and 1761-NET-ENIW, series D, has been
added throughout the manual. The table below lists the sections that
document new features and additional or updated information on
existing features.
For this information: See
how to obtain a manual from Rockwell Automation P-2
Series D LED description page 1-3
Ethernet Settings page 1-6
Series D Enhancements page 1-8
Using the RSLinx Ethernet/IP driver with series B ENIs and higher page 3-5
Download location for ENI/ENIW Configuration Utility page 4-1
Download location for Com Port Redirector software page 4-1
Updated examples and information on making configuration settings
using the ENI/ENIW Configuration Utility, including series D
configuration options
pages 4-2 to 4-4
Series D Email Authentication pages 4-5 and
6-2
Updated information on using the ENI/ENIW Configuration Utility over
RS-232
page 4-6
New information on using the ENI/ENIW Configuration Utility over
Ethernet (series D only), including using the Com Port Redirector
software
pages 4-8
Updated information on configuration node functions page 4-12
Configuring Email Authentication options for series D ENI/ENIWs pages 4-20 to
4-21
Configuring Ethernet speed and duplex settings for series D
ENI/ENIWs
page 4-22
Series D Web Page Enhancements chapter 7
LED sequence at power-up for series A/B/C/D page 9-2
Troubleshooting using the LED indicators series A/B/C/D page 9-3
Series C and D Ethernet specifications page A-1
Updated information on configuration via BOOTP Appendix B
1761-NET-ENI/ENIW performance considerations Appendix C

Publication 1761-UM006E-EN-P - August 2005
2 Summary of Changes

iii Publication 1761-UM006E-EN-P - August 2005
Table of Contents
Preface
Who Should Use this Manual. . . . . . . . . . . . . . . . . . . . . . . P-1
Purpose of this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . P-1
Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . P-2
Common Techniques Used in this Manual . . . . . . . . . . . . . P-2
Your Questions or Comments on this Manual. . . . . . . . . . . P-3
Chapter 1
Product Overview
EtherNet/IP Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Hardware Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Product Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Messaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Email. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Device Compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Series B Enhancements . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Series C Enhancements . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Series D Enhancements . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Ethernet Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Basic Ethernet Topology . . . . . . . . . . . . . . . . . . . . . . . 1-8
Web Server Functionality. . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Chapter 2
Installation and Wiring
European Communities (EC) Directive Compliance . . . . . . 2-1
EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Low Voltage Directive . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
External Power Supply Wiring . . . . . . . . . . . . . . . . . . . . . . 2-3
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
DIN Rail Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Panel Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
ENI/ENIW Port Identification. . . . . . . . . . . . . . . . . . . . . . . 2-5
Ethernet Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Ethernet 8-Pin 10/100-Base-T Connector (Port 1). . . . . . 2-5
Ethernet Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Maintain ENI and ENIW Cable Connections . . . . . . . . . 2-6
RS-232 Port Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
RS-232 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
RS-232 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Publication 1761-UM006E-EN-P - August 2005
iv Table of Contents
Chapter 3
Operation
Operation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Allocation of Ethernet Connections . . . . . . . . . . . . . . . . . . 3-1
ENI and ENIW Functional Overview . . . . . . . . . . . . . . . . . 3-2
General Ethernet Information . . . . . . . . . . . . . . . . . . . . . . 3-2
RSLinx/RSWho Connectivity Example Using ENI/ENIW
Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
PC Connected Directly to Ethernet (RSLinx on Ethernet) 3-4
PC Connected to Ethernet via the ENI or ENIW. . . . . . . 3-8
Chapter 4
ENI/ENIW Configuration (Nodes
241 to 254)
Configuration Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
ENI/ENIW Configuration Utility . . . . . . . . . . . . . . . . . . . . . 4-1
Make Configuration Settings . . . . . . . . . . . . . . . . . . . . . 4-2
Save to ENI/ENIW RAM or ENI/ENIW ROM . . . . . . . . . 4-4
Email Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Message Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Use the Configuration Utility Over RS-232. . . . . . . . . . . 4-6
Use the Configuration Utility Over Ethernet
(Series D only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Controller Messaging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
ENI/ENIW Configuration Parameters . . . . . . . . . . . . . . . . . 4-12
Node 254 - Ethernet Hardware Address . . . . . . . . . . . . 4-13
Node 253 - Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Node 252 - BOOTP Configuration . . . . . . . . . . . . . . . . 4-15
Node 251 - Email Server. . . . . . . . . . . . . . . . . . . . . . . . 4-15
Node 250 - TCP/IP Configuration . . . . . . . . . . . . . . . . . 4-15
Node 249 - From String . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Node 248 - Save/Reset Function . . . . . . . . . . . . . . . . . . 4-19
Node 245 - Configuration Security Mask . . . . . . . . . . . . 4-20
Node 244 - SMTP Email Authentication Checkbox
(Series D Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Node 243 - SMTP Email Authentication Password
(Series D Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Node 242 - SMTP Email Authentication Username
(Series D Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Node 241 - Ethernet Speed and Duplex Setting
(Series D Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Configuring ENI/ENIW Data Parameters. . . . . . . . . . . . . . . 4-22
Configuring ENI/ENIW String Parameters . . . . . . . . . . . . . . 4-24
Configuring the ENI/ENIW Email From String . . . . . . . . 4-24

Publication 1761-UM006E-EN-P - August 2005
Table of Contents v
Chapter 5
Peer-to-Peer Messaging
Messaging Between the ENI/ENIW and DF1 Devices . . . . . 5-1
Message to Configuration Nodes (Nodes 100 to 149) and Sending
a Message to a Destination Controller (Nodes 0 to 49) . . . . 5-2
Chapter 6
EMail Messages (Node 50 to 99)
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Configuring Email . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
SMTP Email Address . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Destination Addresses . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Message Text. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Message Fields (to, from, subject). . . . . . . . . . . . . . . . . 6-4
Sending an Email Message. . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Chapter 7
1761-NET-ENIW Web Server
Capabilities
Web Browser Compatibility. . . . . . . . . . . . . . . . . . . . . . . . 7-1
Series D ENIW Web Pages. . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Home Page. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Defining URL Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Displaying Device Data . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
String Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
Integer Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Floating-point Data . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
Writing Data to the ENIW. . . . . . . . . . . . . . . . . . . . . . . 7-8
Auto-Refresh of Data View Pages . . . . . . . . . . . . . . . . . 7-9
ENIW Update Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
Posting Data to the Device . . . . . . . . . . . . . . . . . . . . . . . . 7-10
Setting Passwords for Data View Pages. . . . . . . . . . . . . 7-10
Posting Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10
Display Event Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
Display Diagnostic Data . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
Display Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13
Use the ENIW Utility to Configure the ENIW’s Web Server
Functionality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14
Configure the Home Page . . . . . . . . . . . . . . . . . . . . . . 7-14
Configure Data View Pages . . . . . . . . . . . . . . . . . . . . . 7-14
Chapter 8
Connecting CompactLogix
Controllers on Ethernet
System Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
General CompactLogix Messaging Guidelines. . . . . . . . . . . 8-4
Configure ENI #1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
Configure ENI #2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
Configure ENI #2 Via the ENI/ENIW Configuration Utility 8-8

Publication 1761-UM006E-EN-P - August 2005
vi Table of Contents
Configuration Via Ladder Logic. . . . . . . . . . . . . . . . . . . 8-10
Download To The CompactLogix Controller Through Two Series
A ENIs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
Download to the CompactLogix Controller Through a ENI/ENIW
Series B/C/D via Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . 8-19
Create MSG Programs for the SLC 5/05 and the ControlLogix
Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
Chapter 9
Troubleshooting
Network Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
Maintain ENI/ENIW Cable Connections. . . . . . . . . . . . . 9-1
Using ENI/ENIW with Routers . . . . . . . . . . . . . . . . . . . . . . 9-1
LED Sequence at Power-Up. . . . . . . . . . . . . . . . . . . . . . . . 9-2
Troubleshooting Using the LED Indicators . . . . . . . . . . . . . 9-3
Error Codes Generated by the ENI/ENIW. . . . . . . . . . . . . . 9-6
Appendix A
Specifications
Physical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Series C and D Ethernet Specifications . . . . . . . . . . . . . . . . A-1
MicroLogix Web Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Appendix B
BOOTP Configuration Method
(default)
ENI/ENIW BOOTP Operation . . . . . . . . . . . . . . . . . . . . . . B-2
Using the Rockwell BOOTP/DHCP Utility . . . . . . . . . . . . . B-3
Appendix C
1761-NET-ENI/ENIW Performance
Considerations
Ethernet/IP Connections . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Packet Size Limitations . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Data Throughput . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
Glossary
Index

1Publication 1761-UM006E-EN-P - August 2005
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
•Rockwell Automation support
Who Should Use this
Manual
Use this manual if you are responsible for designing, installing,
programming, or troubleshooting control systems that use
Allen-Bradley Controllers on Ethernet.
You should have a basic understanding of Allen-Bradley
programmable controllers and Ethernet networking. You should
understand programmable controllers and be able to interpret the
ladder logic instructions required to control your application. If you
do not, contact your local Allen-Bradley representative for information
on available training courses before using this product.
Purpose of this Manual
This manual is a reference guide for the Ethernet Interface (ENI) and
Web-enabled Ethernet Interface (ENIW). It describes the procedures
you use to install and configure the ENI and ENIW.

Publication 1761-UM006E-EN-P - August 2005
Preface 2
Related Documentation
The following documents contain additional information concerning
Rockwell Automation products. To obtain a copy, contact your local
Rockwell Automation office or distributor.
If you would like a manual, you can:
•download a free electronic version from the internet at
www.rockwellautomation.com/literature.
•purchase a printed manual by contacting your local
Allen-Bradley distributor or Rockwell Automation sales office.
Common Techniques Used
in this Manual
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.
•ENI/ENIW is used when information and instructions are
applicable to both the 1761-NET-ENI and 1761-NET-ENIW. In
cases where information applies to only one type of interface,
the appropriate model and series is identified.
For Read this Document Document Number
Instructions on installing a 1761-NET-ENI or 1761-NET-ENIW Interface
Converter.
Ethernet Interface Installation
Instructions
1761-IN007
Information on DF1 open protocol. DF1 Protocol and Command Set
Reference Manual
1770-6.5.16
In-depth information on designing, implementing, and maintaining an
industrial control system using EtherNet/IP (Ethernet Industrial Protocol)
EtherNet/IP Media Planning and
Installation Manual
ENET-IN001
In-depth information on grounding and wiring Allen-Bradley
programmable controllers
Allen-Bradley Programmable
Controller Grounding and Wiring
Guidelines
1770-4.1
A description of important differences between solid-state
programmable controller products and hard-wired electromechanical
devices
Application Considerations for
Solid-State Controls
SGI-1.1
An article on wire sizes and types for grounding electrical equipment National Electrical Code - Published by the National Fire
Protection Association of Boston, MA.
A glossary of industrial automation terms and abbreviations Allen-Bradley Industrial Automation
Glossary
AG-7.1

Publication 1761-UM006E-EN-P - August 2005
Preface 3
Your Questions or
Comments on this Manual
If you find a problem with this manual, or you have any suggestions
for how this manual could be made more useful to you, please
contact us at the address below:
Rockwell Automation
Automation Control and Information Group
Technical Communication, Dept. A602V
P.O. Box 2086
Milwaukee, WI 53201-2086
or visit our internet page at:
http://www.rockwellautomation.com

Publication 1761-UM006E-EN-P - August 2005
Preface 4

1Publication 1761-UM006E-EN-P - August 2005
Chapter 1
Product Overview
This chapter gives an overview of the Ethernet Network Interface. The
following topics are covered:
•EtherNet/IP Connectivity
•Hardware Features
•Operating Modes
•Device Compatibility
•Enhancements by Series
•Ethernet Networks
•Web-Server Functionality
EtherNet/IP Connectivity
The 1761-NET-ENI and 1761-NET-ENIW provide EtherNet/IP
connectivity for all MicroLogix controllers, CompactLogix controllers,
and other DF1 full-duplex devices. The Ethernet Network Interface,
ENI or ENIW, allows you to easily connect non-Ethernet controllers
onto new or existing Ethernet networks and upload/download
programs, communicate between controllers, and generate email
messages via SMTP (simple mail transport protocol).
EtherNet/IP is an industry standard open protocol which provides
inter-device compatibility. You can exchange information with other
Allen-Bradley Ethernet controllers (SLC, PLC, and ControlLogix) in a
peer-to-peer relationship, so you do not need any master-type device.
The ENI and ENIW also support an SMTP mail service that allows an
existing controller to send email messages to any destination
connected to the network. The email can be used to initiate the
transmission of data or status information.

Publication 1761-UM006E-EN-P - August 2005
1-2 Product Overview
Hardware Features
Product Drawing
LED Indicators
The ENI and ENIW have five LED indicators:
CAT FRN
1761-NET-ENI 2.20
SER
B
EXTERNAL POWER REQUIREMENTS
24 V dc +10/-15% AT 100 mA
N.E.C. CLASS 2
USE EXTERNAL DC SOURCE
FOR CLASS IDIVISION 2
APPLICATIONS. SEE
INSTALLATION INSTRUCTIONS
24VDC
CHS
GND
NEUT
DC
MADE IN U.S.A.
ETHERNET ADDRESS
CUS
R
LISTED IND.CONT.EQ. FOR HAZ.
LOC.A196
OPERATING TEMPERATURE CODE T3C
ETHERNET
INTERFACE
CLASS I, GROUPS A,B,C, AND D, DIV 2
N223
EN I*B22001020001 FA C . x x
FF-FF-FF-FF-FF-FF
IP Address
Write-On Area
Ethernet Hardware
Address
Ethernet Port
Series A/B: 10-Base-T
Series C/D: 10/100-Base-T
RS-232
Mini-DIN Port
Table 1.1 Series A/B Descriptions
LED Description Function Color
RS-232
TX/RX
RS-232 data
transmission indicator
flashes when the RS-232 port is
transmitting or receiving data
green
POWER module power lit when module is powered green
LINK Ethernet link status lit when there is a valid physical
Ethernet connection
green
Ethernet
TX/RX
Ethernet data
transmission indicator
flashes when the Ethernet port is
transmitting or receiving data
indicates Ethernet network traffic to
and from the ENI/ENIW
green
FAULT fault condition indicator lit when a fault condition is present red or
flashing
red
FAULT
LINK
Ethernet TX/RX
RS-232 TX/RX
POWER
Series A/B

Publication 1761-UM006E-EN-P - August 2005
Product Overview 1-3
Table 1.2 Series C Descriptions
LED Description Function Color
RS-232
TX/RX
RS-232 data
transmission indicator
RS-232 port is transmitting or receiving
data
flashing
green
no RS-232 traffic off
POWER module power module is powered green
10 10-Base-T Ethernet
link status and data
transmission indicator
No link or continuous data activity off
10-Base-T Half Duplex; Link good
however no data activity
amber
10-Base-T Half Duplex; Link good with
sporadic data activity(1)
(1) Any Ethernet network activity; not necessarily to or from the ENI/ENIW.
flashing
amber
10-Base- T Full Duplex; Link good
however no data activity
green
10-Base-T Full Duplex; Link good with
sporadic data activity(1)
flashing
green
100 100-Base-T Ethernet
link status and data
transmission indicator
No link or continuous data activity off
100-Base-T Half duplex; Link good
however no data activity
amber
100-Base-T Half Duplex; Link good
with sporadic data activity(1)
flashing
amber
100-Base-T Full Duplex; Link good
however no data activity
green
100-Base-T Full Duplex; Link good with
sporadic data activity(1)
flashing
green
FAULT fault condition
indicator
lit when a fault condition is present red or
flashing red
FAULT
10
100
RS-232 TX/RX
POWER
Series C

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1-4 Product Overview
After out-of-box power-up, the most common reason for a flashing
red fault LED is because an IP address has not yet been assigned via
BOOTP. Either set up a BOOTP server to assign an IP address or
modify the ENI/ENIW configuration to use a specific IP address or to
obtain an IP address via a DHCP server.
For more detailed information on LED operation, see Chapter 9,
Troubleshooting.
Table 1.3 Series D Descriptions
LED Description Function Color
RS-232
TX/RX
RS-232 data
transmission indicator
RS-232 port is transmitting or
receiving data
flashing green
no RS-232 traffic off
POWER module power module is powered green
LINK
Ethernet link status and
10-Base-T or
100-Base-T indicator
No link off
10-Base-T link amber
100-Base-T link green
Ethernet
TX/RX
Ethernet activity status
and Half Duplex or Full
Duplex status
No activity off
Half Duplex activity(1)
(1) Any Ethernet network activity; not necessarily to or from the ENI/ENIW.
flashing amber
Full Duplex activity(1) flashing green
FAULT fault condition
indicator
lit when a fault condition is
present
red or flashing
red
FAULT
LINK
Ethernet TX/RX
RS-232 TX/RX
POWER
Series D

Publication 1761-UM006E-EN-P - August 2005
Product Overview 1-5
Default Settings
The ENI/ENIW has the following default settings:
IMPORTANT The IP addresses in any of the examples in this
manual were arbitrarily assigned and should only be
used on an isolated Ethernet network. Contact your
system administrator for unique IP addresses if you
are connecting your Ethernet devices to your
employer’s Ethernet network.
Table 1.4 RS-232 Settings
Setting Default Other Options
Baud Rate Autobaud see table 4.2
Handshaking (hardware, software) none none
Data Bits 8 none
Stop Bits 1 none
Parity none none
Table 1.5 DF1 Settings
Setting Default Other Options
Duplicate Message Detection Enabled none
Error Detection Auto-detect (for
Autobaud)
Auto-detect when
Autobaud is true,
otherwise CRC
Embedded Response Operation Disabled(1)
(1) Connected controllers should be configured for Embedded Responses Disabled or Auto-detect.
none
DLE ACK Timeout 1 second none
DLE NAK Receive 3 NAK retries none
DLE ENQ for Response 3 ENQs retries none
DF1 Node Address Don’t Care

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1-6 Product Overview
Table 1.6 Ethernet Settings
Setting Default Other Options
Ethernet Speed/Duplex(1)
(1) Series D only.
10 Mbps half-duplex
(series A, B)
Auto Negotiate (series C, D)
0 = Auto Negotiate
1 = 10 Mbps half-duplex
2 = 10 Mbps full-duplex
3 = 100 Mbps half-duplex
4 = 100 Mbps full-duplex
SMTP Username(1) null 45 character username
SMTP Password(1) null 45 character password
SMTP Authentication(1) Disabled 0 = Disabled
1 = Enabled
Configuration Security
Mask
000.000.000.000 Valid IP address
Save/Reset(2)
(2) See page 4-19.
n/a 0 = save configuration to flash
1 = simple reset
2 = reset to out-of-box defaults
3 = reset to out-of-box, except
maintain current IP
configuration
From String ENI192.168.1.254@eni1761.
org(4)
(4) TThe ENI/ENIW address, 192.168.1.254 will be replaced by the IP address assigned to the ENI/ENIW. For
example, the string may be [e-mail]. If the ENI/ENIW does not have an assigned IP
address, the string will be read as ENI192.1[email protected]rg for the series D or [email protected]
for series A, B, or C.
ENI/ENIW Identifier
IP Address 000.000.000.000
192.168.1.254(1)
valid IP Address
Subnet Mask 0.0.0.0(5)
(5) See page 4-17 for Subnet Mask auto-detect mode details.
valid subnet mask
Gateway Address 0.0.0.0 valid IP address
Security Mask 1 0.0.0.0 valid IP address
Security Mask 2 0.0.0.0 valid IP address
Email Server 000.000.000.000 valid IP address
BOOTP Configuration 0 0 = BOOTP initially
1 = BOOTP/DHCP disabled
2 = BOOTP fallback(6)
3 = BOOTP always(6)
4 = DHCP always(6)
(6) Series C and higher.
Baud Rate(3)
(3) Changes to the Baud Rate take effect when the ENI/ENIW power is cycled, or the configuration is saved to
flash.
See page 4-14. Autobaud enabled with
autodetect of CRC/BCC
Ethernet Hardware
Address
Factory Value - Read Only
(see the nameplate on the
unit)
Factory Value

Publication 1761-UM006E-EN-P - August 2005
Product Overview 1-7
Operating Modes
Messaging
When the ENI/ENIW is connected to a programmable controller (and
connected to an Ethernet network), the controller can be accessed
from other devices on Ethernet, or initiate communications to other
EtherNet/IP devices.
Email
The ENI/ENIW also support SMTP mail service, which allows a
controller to send email messages to any email address on the
network. The email can be used to initiate the transmission of data or
status information.
Device Compatibility
The ENI/ENIW are compatible with the following devices and
applications:
•All MicroLogix, SLC, PLC-5, CompactLogix, FlexLogix, and
ControlLogix controllers, which support DF1 Full-Duplex on an
available RS-232 port
•Personal Computers using the RSLinx (V2.30.00 and higher) DF1
Full-Duplex Driver
•Other DF1 Full-Duplex compliant products that have at least one
RS-232 port, for example, operator interface devices
•RSLinx (V2.31.00 and higher) Ethernet Driver
Series B Enhancements
The 1761-NET-ENI series B features the following enhancements:
•elimination of the need for two ENIs in a CompactLogix,
FlexLogix, or ControlLogix system using RSLogix 5000
•ability to use Dynamic Host Configuration Protocol (DHCP)
•two new BOOTP options
The 1761-NET-ENIW has the same features as the 1761-NET-ENI, but
includes web-serving capabilities as discussed on page 1-9.

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1-8 Product Overview
Series C Enhancements
The 1761-NET-ENI/ENIW series C features the following
enhancements:
•10/100-Base-T Ethernet port that auto-negotiates between
10 Megabits per second and 100 Megabits per second, either
half-duplex or full-duplex.
•increased temperature range up to 60°C (140°F)
•increased messaging performance
Series D Enhancements
The ENI/ENIW series D features the following enhancements:
•Ability to configure the ENI/ENIW over Ethernet
•Email user authentication for open mail servers
•Ability to force 10 Mbps or 100 Mbps and half-duplex or
full-duplex Ethernet configuration
•Diagnostic web-page for Ethernet connections in use
•Revised web-page formats for ENIW
Ethernet Networks
Basic Ethernet Topology
The ENI/ENIW Ethernet connectors conform to ISO/IEC 8802-3 STD
802.3 and utilizes 10/100 Base-T media. Connections are made directly
from the ENI/ENIW to an Ethernet switch. The network setup is
simple and cost effective. Typical network topology is pictured below.
Ethernet
Switch
to PC Ethernet Card or
other Ethernet Device
to ENI or ENIW
RJ45 connectors on
both ends of cable
(10/100 Base-T)