Rockwell Automation 1756-CNB Installation Instructions
Installation Instructions
ControlLogix ControlNet Interface Module
Catalog Numbers 1756-CNB, 1756-CNBR, Series E
Contents
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
About This Publication
Use this document as a guide to install the ControlLogix ControlNet Bridge
module.
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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://literature.rockwellautomation.com/) 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 liab le for indir ect or consequen tial damage s
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 th is manual, in whole or in part, without writ t en p e r mission 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 practic es or circu mstances th at can cause an explosion in
a hazardous environment, which may lead to personal injury or death, property
damage, or economic loss.
IMPORTANT
ATTENTION
HOCK HAZARD
BURN HAZARD
Publication
Identifies information that is critical for successful application and understanding of
the product.
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 located on or inside the equipment (for example, drive or motor) to
alert people that dangerous voltage may be present.
Labels may be located on or inside the equipment (for example, drive or motor) to
alert people that surfaces may be dangerous temperatures.
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ControlLogix ControlNet Interface Module 3
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, Zone 2 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.
This equipment shall be used within its specified ratings de fined by
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.
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North American Hazardous Location Approval
The following information applies when
operating this equipment in hazardous
locations:
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.
WARNING
Publication
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.
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Informations sur l'utilisation de cet équipement en
environnements dangereux:
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 dans un système, 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.
AVERTISSEMEN
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.
Environment and Enclosure
ControlLogix ControlNet Interface Module 5
ATTENTION
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 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 publicatio n
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 requirement s pe rt aining to this equipment.
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Prevent Electrostatic Discharge
ATTENTION
This equipment is sensitive to electrostatic disch ar ge , 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 appropr iate st atic-safe
packaging.
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.
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 releas e 15 or lat er.
You cannot upgrade a Series D module to a Series E module.
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ControlLogix ControlNet Interface Module 7
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
Primary Chassis
Redundant Control
Chassis Pair
Secondary Chassis
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.
1756-SRM
1756-CNB
1756-CNB/CNBR
1756-CNBR
1756-SRM
1756-CNB
1756-CNB/CNBR
1756-CNBR
I/O Chassis
Publication
1756-CNB
1756-CNBR
ControlNet
Network
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8 ControlLogix ControlNet Interface Module
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l)
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:
1756-CNB or 1756-CNBR
1786-TPR,1786 -TPS
1786-TPYR, or1786 -TPYS
(1)
1786-TPS or 1786-TPYS taps recommended for network connections.
1756-A4, 1756-A7, 1756-A10,
1756-A13, or 1756-A17
(1)
1786-TP (temporary
network connections)
1756-PA72/75 or 1756-PB72/7
Power Supply
Small Screwdriver (optiona
• Know the type of ControlNet network:
There are two types of scheduled traffic networks for ControlNet:
single-keeper networks and multi-keeper networks.
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ControlLogix ControlNet Interface Module 9
All 1756-CNB and 1756-CNBR modules are keeper-capable, as listed.
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
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.
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Identify Module Features
Refer to the figure Module Features to identify the hardware components of
the 1756-CNB and 1756-CNBR modules.
Module Features
Module Status
Alphanumeric
Display
ControlNet
Network
Channel Status
Indicators
Network
Access Port
Channel B
BNC Connector
(1756-CNBR only)
Front View
Module
Status
Indicator
Channel A
Channel A
BNC Connector
Network Address
Switches
Side View
Backplane
Connector
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ControlLogix ControlNet Interface Module 11
Side of Module
Front of Module
Top of Module
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.
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.
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