Allen-Bradley E Series User manual

Publication1756-IN604A-EN-P - February 2006
Installation Instructions
ControlLogix ControlNet Interface Module
Catalog Numbers 1756-CNB, 1756-CNBR, Series E
Contents
About This Publication
Use this document as a guide to install the ControlLogix ControlNet Bridge
module.
For See Page
Important User Information 2
European Hazardous Location Approval 3
North American Hazardous Location Approval 4
Environment and Enclosure 5
Prevent Electrostatic Discharge 6
About the 1756-CNB and 1756-CNBR Series E Modules 6
Understand Standalone and Redundant Control 7
Before You Begin 8
Install or Remove the Module Under Power 14
Install the Module 15
Remove the Module 16
Connect the Module to the Network 17
Troubleshoot the Module 23
Interpret the Module Status Indicator and Display 24
ControlNet Network Channel Status Indicators 28
Specifications 30
Rockwell Automation Support BackCover

2ControlLogix ControlNet Interface Module
Publication 1756-IN604A-EN-P - February 2006
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-1.1available from your local Rockwell Automation sales office or online at
http://literature.rockwellautomation.com/) describessome importantdifferences 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.
InnoeventwillRockwellAutomation,Inc.be responsibleorliableforindirectorconsequentialdamages
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 RockwellAutomation, Inc.with respect touse of information, circuits,
equipment, or software described in this manual.
Reproductionof the contents of thismanual, inwhole or inpart, without written permission of Rockwell
Automation, Inc., is prohibited.
Throughout this manual, when necessary, we use notesto make you aware of safety considerations.
WARNING Identifiesinformationaboutpracticesorcircumstancesthatcancauseanexplosionin
a hazardous environment, which may lead to personalinjury 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, oreconomic loss. Attentions helpyou identify a
hazard, avoid ahazard, and recognize the consequences.
S
HOCK HAZARD Labels may be located on or inside the equipment (for example, driveor motor) to
alert people that dangerous voltage may be present.
BURN HAZARD Labels may be located on or inside the equipment (for example, driveor motor) to
alert people that surfaces may be dangerous temperatures.

ControlLogix ControlNet Interface Module 3
Publication 1756-IN604A-EN-P - February 2006
European Hazardous Location Approval
European Zone 2 Certification
(The following applies when the product bears the EEx Marking.)
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.
IMPORTANT This equipment is not resistant to sunlight or other sources of UV
radiation.
The secondary of a current transformer shall not be open-circuited
when applied in Class I, Zone2 environments.
Equipment of lesser Enclosure Type Rating must be installed in an
enclosure providing at least IP54 protection when applied in Class
I, Zone 2 environments.
Thisequipmentshallbeusedwithinitsspecifiedratingsdefinedby
Allen-Bradley.
Provision shall be made to prevent the rated voltage from being
exceeded by transient disturbances of more than 40% when
applied in Class I, Zone 2 environments.

4ControlLogix ControlNet Interface Module
Publication 1756-IN604A-EN-P - February 2006
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
suitableforuseinClassIDivision2GroupsA, B,
C, D, Hazardous Locations and nonhazardous
locations only. Each product is supplied with
markingson theratingnameplateindicatingthe
hazardous location temperature code. When
combining products within a system, the most
adverse temperature code (lowest “T” number)
may be used tohelp 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, GPA, 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 sursa plaque d'identification qui
indiquent le code de température pour les
environnements dangereux. Lorsque plusieurs
produits sont combinés dans un système, le code de
température leplus 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.
EXPLOSION HAZARD
Donotdisconnectequipment
unless power has been
removedortheareaisknown
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.
RISQUE D'EXPLOSION
Couper le courant ou s'assurer
que l'environnement est classé
non dangereuxavant de
débrancher l'équipement.
Couper le courant ou s'assurer
que l'environnement est classé
non dangereuxavant de
débrancher les connecteurs.
Fixer tous les connecteurs
externes reliés à cet
équipement à l'aide de vis,
loquets coulissants,
connecteurs filetés ou autres
moyensfournis 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
estclassénondangereuxavant
de changer les piles.
WARNING AVERTISSEMEN
T

ControlLogix ControlNet Interface Module 5
Publication 1756-IN604A-EN-P - February 2006
Environment and Enclosure
ATTENTION This equipment is intended for use in a Pollution Degree 2 industrial
environment,inovervoltageCategoryIIapplications(asdefinedinIEC
publication60664-1),ataltitudesupto2000meterswithoutderating.
This equipment is considered Group 1, Class A industrial equipment
according to IEC/CISPR Publication 11. Without appropriate
precautions, there may be potential difficulties ensuring
electromagnetic compatibility in other environments due to
conducted as well as radiated disturbance.
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.
NOTE: 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 Industrial Automation Wiring
and Grounding Guidelines, Allen-Bradley publication 1770-4.1, for
additional installation requirements pertaining to this equipment.

6ControlLogix ControlNet Interface Module
Publication 1756-IN604A-EN-P - February 2006
Prevent Electrostatic Discharge
For additional information, refer to Industrial Automation Wiring and
Grounding Guidelines, publication 1770-4.1.
About the 1756-CNB and 1756-CNBR Series E Modules
The 1756-CNB and 1756-CNBR Series E modules work for all nonredundant
ControlLogix applications.
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.
•If available, use a static-safe workstation.
•Whennot inuse, storethe equipmentinappropriatestatic-safe
packaging.
IMPORTANT Only the 1756-CNB and 1756-CNBR, Series D modules are
supported in ControlLogix Redundancy releases 8, 11, 13, and 15.
After a firmware upgrade to version 11.xx, Series E will be
supported in ControlLogix Redundancy release 15 or later.
You cannot upgrade a Series D module to a Series E module.

ControlLogix ControlNet Interface Module 7
Publication 1756-IN604A-EN-P - February 2006
Understand Standalone and Redundant Control
You can use the 1756-CNB and 1756-CNBR Series E modules as standalone
or in firmware version 11.xx as redundant control. For standalone control,
only one set of modules is required. For redundant control, two ControlLogix
chassis are populated with identical pairs of modules called partners. The
chassis that performs active control is called the primary chassis and the
modules in the chassis are called primary modules. The other chassis is called
the secondary chassis and the modules in the chassis are called secondary
modules. These installation instructions discuss both standalone and
redundant control; read them carefully to distinguish the procedures and
requirements for each type of control.
IMPORTANT If you use redundant control, you must select the same ControlNet
network address for each set of partner modules. You must also
place the partner modules in the same corresponding slots in their
respective redundant control chassis pair.
Primary Chassis
Secondary Chassis
RedundantControl
Chassis Pair
I/O Chassis
1756-SRM
1756-CNB/CNBR
ControlNet
Network
1756-SRM
1756-CNB/CNBR
1756-CNB
1756-CNBR
1756-CNB
1756-CNBR
1756-CNB
1756-CNBR

8ControlLogix ControlNet Interface Module
Publication 1756-IN604A-EN-P - February 2006
Before You Begin
Before you install the module you need to make sure you:
•Know how to handle the module.
Refer to the section Prevent Electrostatic Discharge.
•Have all of the necessary components:
•Know the type of ControlNet network:
There are two types of scheduled traffic networks for ControlNet:
single-keeper networks and multi-keeper networks.
1756-CNB or 1756-CNBR 1756-A4, 1756-A7, 1756-A10,
1756-A13, or 1756-A17 1756-PA72/75 or 1756-PB72/7
5
Power Supply
1786-TPR,1786 -TPS
1786-TPYR, or1786 -TPYS(1)
(1) 1786-TPS or 1786-TPYS taps recommended for network connections.
1786-TP (temporary
network connections)
Small Screwdriver (optiona
l)

ControlLogix ControlNet Interface Module 9
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All 1756-CNB and 1756-CNBR modules are keeper-capable, as listed.
You must match the keeper to the type of network, or upgrade the
firmware of the module at MAC ID 01 to be multi-keeper capable.
Refer to the ControlNet Modules in Logix5000 Control Systems User
Manual, publication CNET-UM001, for more information.
1756-CNB and 1756-CNBR Major/Minor Revision Keeper Type
A 1.xx Single-keeper
B 2.xx Multi-keeper
C 3.xx Single-keeper
C 4.xx Multi-keeper
D 5.xx Multi-keeper
D 7.xx Multi-keeper
E 10.xx Multi-keeper
E 11.xx Multi-keeper

10 ControlLogix ControlNet Interface Module
Publication 1756-IN604A-EN-P - February 2006
Identify Module Features
Refer to the figure Module Features to identify the hardware components of
the 1756-CNB and 1756-CNBR modules.
Module Features
Backplane
Connector
Front View Side View
Switches
Network Address
Module Status
Alphanumeric
Display
Module
Status
Indicator
ControlNet
Network
Channel Status
Indicators
Network
Access Port
Channel B
BNC Connector
(1756-CNBR only) Channel A
BNC Connector
Channel A

ControlLogix ControlNet Interface Module 11
Publication 1756-IN604A-EN-P - February 2006
Set the Module’s Network Address Switches
Use your fingers or a small screwdriver to set the module’s network address
switches. For modules in a standalone chassis, you must specify a unique
ControlNet network address; for modules in a redundant chassis, you must
specify the same address for the secondary module that you specified for the
corresponding primary module.
Side of Module
Front of Module
Top of Module
This module’s network
address is 23.
TIP You can select an address of 01 to 99 for modules in a
standalone chassis or 01 to 98 for modules in redundant
chassis. 00 is an invalid ControlNet network address.

12 ControlLogix ControlNet Interface Module
Publication 1756-IN604A-EN-P - February 2006
Prepare the Chassis for Module Installation
Before you install the module, you must install and connect a ControlLogix
chassis and power supply. A 4-slot chassis with a power supply is shown in the
figure Chassis and Power Supply.
Chassis and Power Supply
For information on installing these products, refer to the table Chassis
Installation Publications.
Chassis Installation Publications
Chassis Type Chassis Installation Power Supply Power Supply
Installation
Series B
1756-A4
1756-A7
1756-A10
1756-A13
Publication
1756-IN080 1756-PA72/B Publication 1756-5.67
1756-PB72/B
1756-PA75/A Publication 1756-5.78
1756-PB75/A
Chassis
Power
Supply

ControlLogix ControlNet Interface Module 13
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Determine Module Slot Location
The figure Chassis Slot Numbering 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). You can use any size ControlLogix
chassis and install the module in any slot. You can also install multiple
1756-CNB and 1756-CNBR modules in the same chassis. You can install as
many modules as your power supply can accommodate (such as the number
for which the power supply is rated).
Chassis Slot Numbering
IMPORTANT Ifyouplantoinstallaredundantsystem,youmustplacetheprimary
and redundant modules in the same corresponding slot in their
respectivechassis.Forexample,if youplace a1756-CNBRmodule
in slot 3 (from the left) in the primary chassis, you must also place
a 1756-CNBR module in slot 3 in the redundant chassis.
Chassis
Power Supply
Slot 0
Slot 1 Slot 3
Slot 2

14 ControlLogix ControlNet Interface Module
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Install or Remove the Module Under Power
You can install or remove the module while chassis power is applied if you
observe the following precautions.
WARNING When you insert or remove the module while backplane power is on,
anelectricalarccanoccur.Thiscouldcauseanexplosioninhazardous
location installations.
Be sure that power is removed or the area is nonhazardous before
proceeding. Repeated electrical arcing causes excessive wear to
contactsonboththemoduleanditsmatingconnector.Worncontacts
may create electrical resistance that can affect module operation.

ControlLogix ControlNet Interface Module 15
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Install the Module
ATTENTION Do not force the module into the backplane connector. If you cannot
seat the module with firm pressure, check the alignment. Forcing the
module intothe chassis can damage the backplane connector or the
module.
Slidethemoduleinto
the chassis. Make
sure the module
backplane connector
properly connects to
the chassis
backplane
Alignthe circuit board with
top and bottom guides in
the chassis.
Circuit
Board
The module is properly installed when it is flush with the power
supply or other installed modules.

16 ControlLogix ControlNet Interface Module
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Remove the Module
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 with the
same ControlNet address in the same slot.
Upper Tab
Pushontheupperandlowertabs
to disengage them. Then slide
the module out of the chassis.

ControlLogix ControlNet Interface Module 17
Publication 1756-IN604A-EN-P - February 2006
Connect the Module to the Network
You can connect the module to the ControlNet network using a tap
(1786-TPR, 1786-TPS, 1786-TPYR, or 1786-TPYS) or a network access cable
(1786-CP).
The following figure shows an example ControlNet network using redundant
media.
WARNING If you connect or disconnect the communications cable with power
appliedtothis moduleoranydeviceonthenetwork,an electricalarc
can occur. This could cause an explosion in hazardous location
installations.
TIP Use the 1786-CP cable for temporary connections, such as
programming software. For permanent connections, use a tap.
1756-CNBR Module
(in a 1756-A4 chassis) ControlNet Network
Node
ControlNet Link
ControlNet
Node
Redundant Media
(optional)

18 ControlLogix ControlNet Interface Module
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When connecting the module to a ControlNet network, you should also refer
to the following documentation:
•ControlNet Coax Tap Installation Instructions, publication 1786-5.7
•ControlNet Cable System Planning and Installation Manual,
publication CNET-IN002
TIP For network connections we recommend taps with a straight
connector (1786-TPS or 1786-TPYS) because of the location of the
BNC connectors on the bottom of the module.

ControlLogix ControlNet Interface Module 19
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Connect to the Network with a Tap
Perform the following steps to connect the module to the network using a tap.
1. Remove and save the dust caps from the ControlNet network taps.
2. Connect the tap’s straight or right-angle connector to the module’s
BNC connector.
ATTENTION Do not allow any metal portions of the tap to contact any conductive
material. If you disconnect the tap from the module, place the dust
cap back on the straight or right-angle connector to prevent the
connector from accidentally contacting a metallic grounded surface.
If Your Node Supports Connect The Tap’s Connector
nonredundant media
1756-CNB to the channel A connector on the module
(channel B on the 1756-CNBR is not used)(1)
(1) Whilebothchannelsareactive,RockwellrecommendsusingchannelAfornonredundant
media.
redundant media •from trunkline A to channel A on the
1756-CNBR
•from trunkline B to channel B on the
1756-CNBR
Dust Cap
Segment 1 Segment 2
D
ust Cap
1756-CNB - Segment 1
1756-CNBR - Segments1 and
2

20 ControlLogix ControlNet Interface Module
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IMPORTANT To prevent inadvertent reversal of the tap connections (resulting in
incorrect status displays requiring troubleshooting), check the tap
drop cable for the label indicating the attached segment before
making your connection.
To work properly, when you use modules in a redundant control
chassis pair, the primary and redundant partnermodules must be
connectedtothesamenetworksegment.Ifyouareusingredundant
media, connect the channel of each partner to the same network
segment.
Tap
Segment 1 Segment 2
Tap Tap
AA
B