Allen-Bradley ControlLogix 1756-ENET/B User manual

Publication 1756-IN053D-EN-P - June 2002
Installation Instructions
ControlLogix Ethernet Communication
Interface Module
Catalog Number 1756-ENET/B
Use this manual as a guide to install the ControlLogix™ Ethernet™
Communication Interface Module. This table identifies what this
manual contains and where to find specific information.
Topic Page
Important User Information 2
Identifying Module Components 6
Preparing the Chassis for Module Installation 6
Determining Module Slot Location 7
Installing the Module in the Chassis 8
Removing or Replacing the Module (when applicable) 9
Installing or Removing the Module While Power Is Applied 10
Wiring the Ethernet Connector 10
Connecting the Module to the Ethernet Network 11
Applying Chassis Power 12
Checking Power Supply and Module Status 13
Troubleshooting the Module 14
Where to Find Information on Configuring the Ethernet Module 14
Hazardous Location Information 15
Specifications 16
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Important User Information
Because of the variety of uses for the products described in this
publication, those responsible for the application and use of these
products must satisfy themselves that all necessary steps have been
taken to assure that each application and use meets all performance
and safety requirements, including any applicable laws, regulations,
codes and standards. In no event will Rockwell Automation be
responsible or liable for indirect or consequential damage resulting
from the use or application of these products.
Any illustrations, charts, sample programs, and layout examples
shown in this publication are intended solely for purposes of
example. Since there are many variables and requirements associated
with any particular installation, Rockwell Automation does not
assume responsibility or liability (to include intellectual property
liability) for actual use based upon the examples shown in this
publication.
Allen-Bradley publication SGI-1.1, Safety Guidelines for the
Application, Installation and Maintenance of Solid-State Control
(available from your local Rockwell Automation office), describes
some important differences between solid-state equipment and
electromechanical devices that should be taken into consideration
when applying products such as those described in this publication.
Reproduction of the contents of this copyrighted publication, in
whole or part, without written permission of Rockwell Automation, is
prohibited.
Throughout this publication, notes may be used to make you aware
of safety considerations. The following annotations and their
accompanying statements help you to identify a potential hazard,

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Publication 1756-IN053D-EN-P - June 2002
avoid a potential hazard, and recognize the consequences of a
potential hazard:
WARNING
!
Identifies information about practices or
circumstances that can cause an explosion in a
hazardous environment, which may lead to
personal injury or death, property damage, or
economic loss.
ATTENTION
!
Identifies information about practices or
circumstances that can lead to personal injury or
death, property damage, or economic loss.
IMPORTANT Identifies information that is critical for
successful application and understanding of the
product.
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Publication 1756-IN053D-EN-P - June 2002
ATTENTION
!
Environment and Enclosure
This equipment is intended for use in a Pollution Degree
2 industrial environment, in overvoltage Category II
applications (as defined in IEC publication 60664-1), at
altitudes up to 2000 meters without derating.
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 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.
See NEMA Standards publication 250 and IEC publication
60529, as applicable, for explanations of the degrees of
protection provided by different types of enclosure. Also,
see the appropriate sections in this publication, as well as
the Allen-Bradley publication 1770-4.1 ("Industrial
Automation Wiring and Grounding Guidelines"), for
additional installation requirements pertaining to this
equipment.

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European Zone 2 Certification
This equipment is intended for use in potentially explosive
atmospheres as defined by European Union Directive 94/9/EC.
The LCIE (Laboratoire Central des Industries Electriques) certifies that
this equipment has been found to comply with the Essential Health
and Safety Requirements relating to the design and construction of
Category 3 equipment intended for use in potentially explosive
atmospheres, given in Annex II to this Directive. The examination
and test results are recorded in confidential report No. 28 682 010.
Compliance with the Essential Health and Safety Requirements has
been assured by compliance with EN 50021 (1999).
ATTENTION
!
Preventing Electrostatic Discharge
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.
•If available, use a static-safe workstation.
•When not in use, store the equipment in
appropriate static-safe packaging.
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Publication 1756-IN053D-EN-P - June 2002
Identifying Module Components
Use this illustration to identify the external features of the Ethernet
module.
Preparing the Chassis for Module Installation
Before you install the Ethernet module, you must install and connect
a ControlLogix chassis and power supply.
< www > ETHERNET
OKTXDRXD
AUI
10 BASET
1756-ENET
Backplane
Connector Product
Label
AUI Ethernet
Connector
10BT Ethernet
Connector
Side View Front View
Front
Panel
MAC ID
LED Status
Indicators
Door
Label
Label
20805-M
1756-A4
Chassis
Power
Supply

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For information about installing these products, refer to the
publications listed in this table.
Determining Module Slot Location
You can install the module in any slot in the ControlLogix chassis.
You can also install multiple ENET modules in the same chassis. The
figure below shows chassis slot numbering in a 4-slot chassis. Slot 0 is
the first slot and is always the leftmost slot in the rack (the first slot to
the right of the power supply).
Chassis
Type
Chassis
Installation
Power
Supply
Power Supply
Installation
Series B: 1756-A4, -A7, -A10,
-A13, -A17
Pub. No.
1756-IN080
1756-PA72/B Pub. No.
1756-5.67
1756-PB72/B
1756-PA75/A Pub. No.
1756-5.78
1756-PB75/A
Power Supply
Slot 0
Slot 1
Slot 2
Slot 3
Chassis
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Installing the Module in the Chassis
Align the circuit board with top and
bottom guides in the chassis.
1
Slide the module into the chassis. Make
sure the module backplane connector
properly connects to the chassis backplane.
2
The module is properly installed
when it is flush with the power
supply or other installed modules.
Circuit Board
3

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Removing or Replacing the Module (when applicable)
IMPORTANT If you are replacing an existing module with an
identical one, and you want to resume identical
system operation, you must install the new module
in the same slot.
Push on upper and lower module
tabs to disengage them.
1
Slide module out of chassis.
2
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Publication 1756-IN053D-EN-P - June 2002
Installing or Removing the Module While Power Is Applied
You can install or remove the module while chassis power is applied.
Please observe the following precautions.
Repeated electrical arcing causes excessive wear to contacts on both
the module and its mating connector. Worn contacts may create
electrical resistance that can affect module operation.
Wiring the Ethernet Connector
Use either an AUI or an RJ45 connector to connect to the Ethernet
network.
For detailed Ethernet connection information, see the EtherNet/IP
Performance and Application Guide, publication ENET-IN001.
Wire the appropriate connector according to this illustration.
WARNING
!
When you insert or remove the module while
backplane power is on, or you connect or
disconnect the communications connectors, 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.
RJ 45
8
1
AUI
9-Ctrl IN Ckt B
10-Data OUT Ckt B
11-Data OUT Ckt B
12-Data OUT Ckt B
13-Voltage Plus
14-Voltage Shield
15-Ctrl OUT Ckt B
Protective Ground
1 ------ TD+
1-Ctrl IN Ckt Shield
2-Ctrl IN Ckt A
3-Data OUT Ckt A
4-Data IN Ckt Shield
5-Data In Ckt A
6-Voltage Comm
7-Ctrl OUT Ckt A
8-Ctrl OUT Ckt Shield
2 ------ TD-
3 ------ RD+
4 ------ NC
5 ------ NC
6 ------ RD-
7 ------ NC
8 ------ NC