Rockwell Automation ControlLogix 1756-EN2TR User manual

Installation Instructions
ControlLogix EtherNet/IP Communication
Module
Catalog Numbers 1756-EN2TR, 1756-EN3TR
Topic Page
Important User Information 2
Environment and Enclosure 3
Prevent Electrostatic Discharge 5
North American Hazardous Location Approval 4
About the Module 5
Before You Begin 7
Install the Module 11
Status Indicators 19
Specifications 21
Additional Resources 25

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Publication 1756-IN612B-EN-P - December 2009
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.rockwellautomation.com/literature) 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 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 and recognize the consequences.
Labels may be on or inside the equipment (for example, drive or motor) to alert people
that dangerous voltage may be present.
Labels may be on or inside the equipment (for example, drive or motor) to alert people
that surfaces may reach dangerous temperatures.
SHOCK HAZARD
BURN HAZARD

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Publication 1756-IN612B-EN-P - December 2009
Environment and Enclosure
ATTENTION This equipment is intended for use in a Pollution Degree 2 industrial
environment, in overvoltage Category II applications (as defined in IEC
60664-1), at altitudes up to 2000 m (6562 ft) without derating.
This equipment is considered Group 1, Class A industrial equipment according
to IEC/CISPR 11. Without appropriate precautions, there may be difficulties
with electromagnetic compatibility in residential and other environments due
to conducted and radiated disturbances.
This equipment is supplied as open-type equipment. It must be mounted within
an enclosure that is suitably designed for those specific environmental
conditions that will be present and appropriately designed to prevent personal
injury resulting from accessibility to live parts. The enclosure must have
suitable flame-retardant properties to prevent or minimize the spread of flame,
complying with a flame spread rating of 5VA, V2, V1, V0 (or equivalent) if
non-metallic. The interior of the enclosure must be accessible only by the use
of a tool. Subsequent sections of this publication may contain additional
information regarding specific enclosure type ratings that are required to
comply with certain product safety certifications.
In addition to this publication, see:
•Industrial Automation Wiring and Grounding Guidelines, for additional
installation requirements, Allen-Bradley publication 1770-4.1.
•NEMA Standards publication 250 and IEC 60529, as applicable, for
explanations of the degrees of protection provided by different types of
enclosure.

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Publication 1756-IN612B-EN-P - December 2009
North American Hazardous Location Approval
The following information applies when
operating this equipment in hazardous
locations.
Informations sur l’utilisation de cet
équipement en environnements dangereux.
Products marked "CL I, DIV 2, GP A, B, C, D" are suitable for
use in Class I Division 2 Groups A, B, C, D, Hazardous
Locations and nonhazardous locations only. Each product is
supplied with markings on the rating nameplate indicating
the hazardous location temperature code. When
combining products within a system, the most adverse
temperature code (lowest "T" number) may be used to help
determine the overall temperature code of the system.
Combinations of equipment in your system are subject to
investigation by the local Authority Having Jurisdiction at
the time of installation.
Les produits marqués "CL I, DIV 2, GP A, B, C, D" ne
conviennent qu'à une utilisation en environnements de
Classe I Division 2 Groupes A, B, C, D dangereux et non
dangereux. Chaque produit est livré avec des marquages sur
sa plaque d'identification qui indiquent le code de
température pour les environnements dangereux. Lorsque
plusieurs produits sont combinés dansunsystème, le code de
température le plus défavorable (code de température le plus
faible) peut être utilisé pour déterminer le code de
température global du système. Les combinaisons
d'équipements dans le système sont sujettes à inspection par
les autorités locales qualifiées au moment de l'installation.
WARNING EXPLOSION HAZARD -
• Do not disconnect equipment unless
power has been removed or the
area is known to be nonhazardous.
• Do not disconnect connections to
this equipment unless power has
been removed or the area is known
to be nonhazardous. Secure any
external connections that mate to
this equipment by using screws,
sliding latches, threaded
connectors, or other means
provided with this product.
• Substitution of components may
impair suitability for Class I,
Division 2.
• If this product contains batteries,
they must only be changed in an
area known to be nonhazardous.
AVERTISSEMENT RISQUE D’EXPLOSION –
• Couper le courant ou s'assurer
que l'environnement est classé
non dangereux avant de
débrancher l'équipement.
• Couper le courant ou s'assurer
que l'environnement est classé
non dangereux avant de
débrancher les connecteurs. Fixer
tous les connecteurs externes
reliés à cet équipement à l'aide
de vis, loquets coulissants,
connecteurs filetés ou autres
moyens fournis avec ce produit.
• La substitution de composants
peut rendre cet équipement
inadapté à une utilisation en
environnement de Classe I,
Division 2.
• S'assurer que l'environnement est
classé non dangereux avant de
changer les piles.

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Publication 1756-IN612B-EN-P - December 2009
Prevent Electrostatic Discharge
About the Module
The module provides EtherNet/IP connectivity. Use the tap to support
linear, star, and device-level ring (DLR) topologies. The module is configured
by default to support linear and star topologies. When setting up a DLR,
follow the steps in the Use the Module in a Device-level Ring (DLR) Network
section on page 15 to avoid adversely impacting your network.
Refer to the EtherNet/IP Ring Topology Application Guide,
publication ENET-AP005, for information on setting up EtherNet/IP
network topologies.
ATTENTION This equipment is sensitive to electrostatic discharge, which can
cause internal damage and affect normal operation. Follow these
guidelines when you handle this equipment:
•Touch a grounded object to discharge potential static.
•Wear an approved grounding wriststrap.
•Do not touch connectors or pins on component boards.
•Do not touch circuit components inside the equipment.
•Use a static-safe workstation, if available.
•Store the equipment in appropriate static-safe packaging when not in
use.

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Publication 1756-IN612B-EN-P - December 2009
Use this figure to identify the external features of the module.
Item Description Item Description
1 Top view 6 Bottom view
2 Rotary switches 7 RJ45 (Ethernet) cable connectors
(on underside of module)
3 Side view 8 Front view
4 Backplane connector 9 USB port
5 MAC ID label (on opposite side
of circuit board)
10 Alphanumeric display and status
indicators
1
LNK1 LNK2 OK
10/100 BASE T
EtherNet/IP
TM
1 2
3
6
10
9
4
5
7
8
2

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Publication 1756-IN612B-EN-P - December 2009
Software Requirements
You must have the following versions of software.
Before You Begin
Before you install the module, you must install and connect a ControlLogix
chassis and power supply.
20805-M
12Item Description
1 Power supply
2 1756-A4 chassis
Module Software Version
1756-EN2TR RSLinx Classic 2.55 or later
RSLogix 5000 17.0x (supports revision 2 of module firmware only)
If you are using version 17.01 of RSLogix 5000 software, you need to download the
add-on-profile. Download it from
http://www.rockwellautomation.com/support/controlflash/LogixProfiler.asp
or
18 or later (supports revision 2 and later revisions of module firmware)
1756-EN3TR RSLinx Classic 2.56 or later
RSLogix 5000 18 or later

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Publication 1756-IN612B-EN-P - December 2009
To install these products, refer to these publications.
Determine Module Slot Location
Install the module in any slot in the ControlLogix chassis. You can install
multiple 1756-EN2TR or 1756-EN3TR modules in the same chassis. The
following figure shows chassis slot numbering in a 4-slot chassis. Slot 0 is the
first slot and is always the leftmost slot in the rack.
1
4
5
6
2
20806
3
Item Description
1 Power supply
2Chassis
3Slot0
4Slot1
5Slot2
6Slot3
Set the Network Address
The module is shipped with the rotary switches set to 999 and BOOTP
enabled. You can set the network Internet Protocol (IP) address three ways.
• Use the rotary switches on the top of the module.
• Use a BOOTP server or Dynamic Host Configuration Protocol
(DHCP) server.
• Use Rockwell Automation RSLinx Classic or RSLogix 5000 software.
Chassis Type Chassis Installation Instructions Power Supply Power Supply Installation
Instructions
1756-A4/B
1756-A7/B
1756-A10/B
1756-A13/B
Publication 1756-IN080 1756-PA72/C,
1756-PB72/B,
1756-PA75/B,
1756-PB75/B
Publication 1756-IN613

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Publication 1756-IN612B-EN-P - December 2009
Use the Rotary Switches
The module reads the rotary switches first to determine if they are set to a
valid number for the last portion of the IP address. Valid numbers range from
001…254.
When the switches are set to a valid number, the module’s IP address is
192.168.1.xxx (where xxx represents the number set on the switches). The
module’s subnet mask is 255.255.255.0 and the gateway address is set to
0.0.0.0.
The module does not have a host name assigned, nor does it use any Domain
Name System when using the rotary switch settings.
1. To reset the module to its initial out-of-the-box settings, reset the
switches to 888 and cycle power.
Do not use the 888 switch setting during normal module operation.
2. After cycling power with the switches set to 888, remove the module
and set the switches to their final value.
The software configuration determines the IP address when you set
the rotary switches to:
•a value other than 888.
•the valid IP address values 001…254.
IMPORTANT
3
12
31587
Item Description
1 Front of module
2 Top of module
3 Rotary switches

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Publication 1756-IN612B-EN-P - December 2009
Use a DHCP/BOOTP Server
If you do not have a large computer that can act as a boot server, download
our DHCP/BOOTP software so you can use a personal computer as a
DHCP/BOOTP server.
To set the network address by using the Rockwell Automation
DHCP/BOOTP server, follow these steps.
1. Access the DHCP/BOOTP utility at
http://www.ab.com/networks/ethernet/bootp.html.
2. Download the version 2.3.2 DHCP/BOOTP utility.
3. Extract the zipped files to a temporary directory.
4. In the temporary directory, double-click setup.exe to install the
DHCP/BOOTP utility.
5. Run the utility.
6. Refer to the following chart, which describes what happens next,
depending on whether DHCP/BOOTP is enabled on the module.
If DHCP/BOOTP is The module
Enabled Asks for an address from a DHCP/BOOTP server. The server
also assigns other Transport Control Protocol (TCP) parameters.
Not enabled Uses the IP address (along with other TCP configurable
parameters) stored in nonvolatile memory.