Page 1
Installation Instructions
ControlLogix-XT ControlNet Interface Module
Catalog Number 1756-CN2RXT
Top ic Page
Important User Information 2
About the ControlLogix-XT ControlNet Module 6
About ControlLogix-XT Systems 8
ControlLogix-XT with Traditional ControlLogix Compone
Using the 1756-CN2RXT for Standalone or Redundant Control 9
Example Redundant ControlLogix-XT System 10
Before You Begin 10
Parts 11
Set the Module’s Network Address 11
Reset the Module to the Original Factory Settings 12
Prepare the Chassis for Module Installation 13
Determine the Module Slot Location 13
Removal and Insertion Under Power (RIUP) 14
Install the ControlNet Module 14
Connect the Module to the Network 16
Remove the Module 19
Install the EDS File 20
Configure RSLinx Software to Use the USB Port 21
Set Up the USB Driver 22
Status Indicators 23
Module Status Indicator and Display 23
Channel Status Indicators 29
General Specifications - 1756-CN2RXT 31
Environmental Specifications - 1756-CN2RXT 32
Certifications - 1756-CN2RXT 34
Additional Resources 35
nts 8
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2 ControlLogix-XT ControlNet Interface Module
WARNING
IMPORTANT
ATTENTION
SHOCK HAZARD
BURN HAZARD
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
http://literature.rockwellautomation.com
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.
available from your local Rockwell Automation sales office or online at
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.
Identifies information that is critical for successful application and understanding
of the product.
) describes some important differences between solid state
Publication
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, a drive or motor, to alert
people that dangerous voltage may be present.
Labels may be on or inside the equipment, for example, a drive or motor, to alert
people that surfaces may reach dangerous temperatures.
1756-IN634A-EN-P - April 2009
Page 3
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 250 and IEC 60529, as applicable, for explanations of
the degrees of protection provided by different types of enclosure.
ControlLogix-XT ControlNet Interface Module 3
.
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4 ControlLogix-XT ControlNet Interface Module
WARNING
AVERTISSEMENT
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, H azardous
Locations and nonhazardous locations only. Each product
is supplied with markings on the ra ting nameplate
indicating the hazardous locati on temperature code.
When combining products within a system, the most
adverse temperature code (lowest "T" numb er) may be
used to help determine the overall tem perature 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.
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 kn own
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.
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 en vironnements 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 danger eux. Lorsque
plusieurs produits sont combinés dans un système, le code de
température le plus défavorable (code de tempér ature 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.
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'en vironnement est
classé non dangereux avant de
changer les piles.
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ControlLogix-XT ControlNet Interface Module 5
WARNING
ATTENTION
European Hazardous Location Approval
European Zone 2 Certification
(The following applies when the product bears the Ex or EEx Marking)
This equipment is intended for use in potentially explosive atmospheres as defined by
European Union Directive 94/9/EC and 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.
Compliance with the Essential Health and Safety Requirements has been assured by
compliance with EN 60079-15 and EN 60079-0.
• This equipment must be installed in an enclosure providing at least IP54
protection when applied in Zone 2 environments.
• This equipment shall be used within its specified ratings defined 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
Zone 2 environments.
• This equipment must be used only with ATEX certified backplanes.
• Secure any external connections that mate to this equipment by using
screws, sliding latches, threaded connectors, or other means provided
with this product.
• Do not disconnect equipment unless power has been removed or the
area is known to be nonhazardous.
This equipment is not resistant to sunlight or other sources of UV radiation.
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6 ControlLogix-XT ControlNet Interface Module
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.
• Use a static-safe workstation, if available.
• Store the equipment in appropriate static-safe packaging when not in
use.
About the ControlLogix-XT ControlNet Module
Configure and use the 1756-CN2RXT module as you would a
traditional 1756-CN2R/B module. For more information about
configuring and using the 1756-CN2RXT and 1756-CN2R/B modules,
see the ControlNet Modules in Logix5000 Control Systems User
Manual, publication
CNET-UM001.
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Page 7
ControlLogix-XT ControlNet Interface Module 7
00 Factory Reset
on Power Up
(Invalid Network Address)
01 - 99
Normal Operation
(Valid Network Address)
1
2
3
4
5
6
Features of the 1756-CN2RXT Module
These are the hardware features of the 1756-CN2RXT module.
Item Description
1 Module status display - an alphanumeric display that indicates module status
2 Status indicators that show channel and module status
3 USB port for temporary connection
4 Channel A BNC connector
5 Channel B BNC connector
6 Backplane connector
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8 ControlLogix-XT ControlNet Interface Module
IMPORTANT
About ControlLogix-XT Systems
The ControlLogix-XT products include control and communication
system components that, when used with FLEX I/O-XT products,
provide a complete control system solution that can be used in
environments where temperatures range from -20...70 °C (-4...158 °F).
When used independently, the ControlLogix-XT system can withstand
ironments where the temperature ranges from -25...70 °C
env
(-13...158 °F).
ControlLogix-XT with Traditional ControlLogix Components
ControlLogix-XT system components are rated for extreme
environmental conditions only when used properly with other
Logix-XT system components. The use of ControlLogix-XT components
with traditional ControlLogix system components nullifies
extreme-environment ratings.
If a ControlLogix-XT module is used with traditional ControlLogix products,
that is, ControlLogix products not designed for extreme environments, the
ControlLogix-XT module can withstand only the environments specified for
the traditional ControlLogix version of the module. For example, if a
1756-CN2RXT module is used in a traditional 1756-A10 chassis, the
1756-CN2RXT module can withstand only the environment specified for the
traditional 1756-CN2R/B module.
The ControlLogix-XT system components are designed to meet the same
greater operational and environmental requirements as traditional
and
ControlLogix products.
When a ControlLogix-XT component is
traditional ControlLogix component, the functional and environmental
requirements of the traditional ControlLogix component apply.
used as a replacement for a
For more information about standard ControlLogix component
specifications and installation requirements, see the resources listed
in the Additional Resources table on page
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35.
Page 9
ControlLogix-XT ControlNet Interface Module 9
IMPORTANT
Using the 1756-CN2RXT for Standalone or Redundant Control
You can use the 1756-CN2RXT modules either in standalone or
redundant configurations.
A standalone configuration uses:
• one control chassis that contains the 1756-CN2RXT and the
6-L63XT controller.
175
• one or both channels of the 1756-CN2RXT module connected
to the ControlNet network.
A redundant configuration uses:
• two controller chassis called the redundant chassis pair. Each
ssis of the pair must contain at least these modules:
cha
– 1756-L63XT controller.
– 1756-CN2RXT ControlNet module.
– 1756-RMXT redundancy module.
• one or both channels of the 1756-CN2RXT module connected
to the ControlNet network.
If you are using the 1756-CN2RXT in a redundant system, these hardware
considerations must be made:
• Each redundant chassis of the pair must be configured with identical
modules placed in identical slots. These module pairings between the
two chassis are called partners.
• All partner modules in redundant chassis pairs must be at the same
firmware revision.
• For ControlNet module partners, the ControlNet network address must
be the same for each module of the pair.
• These modules cannot be used in redundant chassis pairs that contain
1756-CN2RXT modules:
– 1756-DHRIOXT or 1756-DHRIO
– 1756-SRM
For more information about redundancy control, refer to the
ControlLogix Redundancy System User Manual, publication
1756-UM523.
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10 ControlLogix-XT ControlNet Interface Module
Primary Chassis
Secondary Chassis
Redundant
ControlNet Media
To Remote I/O
To Remote I/O
To Remote I/O
To Remote I/O
Example Redundant ControlLogix-XT System
This example of a redundant ControlLogix-XT system shows the
chassis components listed in this table.
This chassis Contains these modules
Primary chassis 1756-A5XT, 1756-PBXT, 1756-L63XT, 1756-RMXT, 1756-CN2RXT
Secondary chassis 1756-A5XT, 1756-PBXT, 1756-L63XT, 1756-RMXT, 1756-CN2RXT
Before You Begin
Before you install your module, complete these tasks:
Publication
11.
11.
• Obtain Appropriate Parts, page
• Set the Module’s Network Address, page
• Prepare the Chassis for Module Installation, page
• Determine the Module Slot Location, page 13.
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13.
Page 11
ControlLogix-XT ControlNet Interface Module 11
-
1756-CN2RXT
1756-A5XT or 1756-A7LXT
1756-PBXT
1786-TPR, 1786-TPS, 1786-TPYR, or 1786-TPYS
Top of Module
Parts
To use your ControlNet module, you need these system components.
X
X
T
X
T
X
T
X
T
T
Set the Module’s Network Address
Use 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. You can select an address of
01...99 for modules in a standalone chassis. Address 00 is an invalid
ControlNet address.
This example shows the network address switches set to 23.
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12 ControlLogix-XT ControlNet Interface Module
IMPORTANT
IMPORTANT
Reset the Module to the Original Factory Settings
If you need to reset the module to its original settings and clear all
keeper information, complete the following steps.
The following procedure instructs you to remove power from the chassis
before removing the module. This is only necessary if the module is in a
Class I, Division 2 hazardous location. For more information, see Removal
and Insertion Under Power (RIUP) on page 14
1. Remove power from the chassis.
2. Remove the module from the chassis.
3. Reset the switches to 00.
Do not use the 00 switch setting during normal module operation.
4. Replace the module in the chassis.
5. Apply power to the chassis.
6. After the module status display reads, ‘Reset Complete-Change
tch Settings,’ remove power from the chassis.
Swi
.
7. Remove the module from the chassis.
8. Set the switches to their final value.
9. Replace the module in the chassis.
10. Apply power to the chassis.
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ControlLogix-XT ControlNet Interface Module 13
Slot 0
Slot 1
Slot 2
Slot 3
Slot 4
Prepare the Chassis for Module Installation
Complete these tasks using the resources listed as references before
you install your ControlNet module.
Task Resource
Install a ControlLogix-XT chassis ControlLogix-XT Chassis, Series B Installation
Install a ControlLogix-XT power supply ControlLogix-XT Power Supply Installation
Instructions, publication 1756-IN637
Instructions, publication 1756-IN639
Determine the Module Slot Location
When installing your ControlLogix-XT ControlNet Interface module,
remember that you can install:
• a 1756-CN2RXT module in any open slot of the chassis.
• multiple 1756-CN2RXT modules in the same chassis.
• as many modules as your power supply can accommodate,
that is, the number for which the power supply is rated.
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14 ControlLogix-XT ControlNet Interface Module
WARNING
Removal and Insertion Under Power (RIUP)
When you insert or remove the module while backplane power is on, 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.
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.
Install the ControlNet Module
To install the module, perform this procedure.
1. Align the circuit board with top and bottom guides in the
ssis.
cha
2. Slide the module into the chassis.
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X
T
X
T
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ControlLogix-XT ControlNet Interface Module 15
ATTENTION
3. Make sure the module backplane connector properly connects
to the chassis backplane.
Do not force the module into the backplane connector. If you cannot seat the
module with firm pressure, check the alignment. Forcing the module into the
chassis can damage the backplane connector or the module.
The module is properly installed when it is flush with the
pow
er supply or other installed modules.
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16 ControlLogix-XT ControlNet Interface Module
WARNING
ATTENTION
Dust Cap
Connect the Module to the Network
If you connect or disconnect the communications cable with power applied to
this module or any device on the network, 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.
Connect the module to the ControlNet network by using one of these
taps:
• 1786-TPR • 1786-TPYS
• 1786-TPS • 1786-TCT2BD1
• 1786-TPYR
However, taps with a straight connector (catalog numbers 1786-TPS
and
1786-TPYS) are recommended because the BNC connectors are
located on the bottom of the module.
To connect the module to the network with a tap, perform this
dure.
proce
1. Remove and save the dust caps from the ControlNet taps.
Publication
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.
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ControlLogix-XT ControlNet Interface Module 17
IMPORTANT
Tap
Tap
B
A
X
T
X
T
2. Attach the tap’s straight or right-angle connector to the
appropriate BNC connector on the module.
Avoid accidentally reversing the tap connections. Before making your
connection, check the tap drop cable for the label indicating the attached
segment. Accidental connection reversals produce incorrect status displays
and require troubleshooting.
To use modules in a redundant-control chassis pair, you must connect the
primary and redundant partner modules to the same network segment. If
you are using redundant media, connect the channel of each partner to the
same network segment.
For trunkline Attach the connector to
A Channel A on the 1756-CN2RXT module
B Channel B on the 1756-CN2RXT module
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18 ControlLogix-XT ControlNet Interface Module
Turn the chassis
power supply on.
Module status
indicator red?
See Status Indicators
on page 23
.
Module performs a
self-test
initialization.
No
Yes
TEST
No
Yes
Module status
indicator red?
Self-test has failed, and
the module displays an
error message. See
page 23
.
Replace the
module.
Self-test is complete.
The status indicator
flashes green.
Channel A and B
status indicators
alternately flash.
Channel A and B status
indicators display the
network condition as
listed on page 29
.
Module status
displays OK?
No
See the troubleshooting
table on page 23
.
Yes
Module is functional
and operating.
OK
A#xx
Apply Power and Check Status
If not yet applied, apply power to the chassis power supply. Use this
flowchart as a reference to determine module status after power is
applied.
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ControlLogix-XT ControlNet Interface Module 19
IMPORTANT
Remove the Module
To remove the module, perform this procedure.
1. Push on the upper and lower tabs to disengage them.
2. Slide the module out of the chassis.
X
X
T
T
If you are removing and 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.
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20 ControlLogix-XT ControlNet Interface Module
Install the EDS File
The EDS file can be uploaded directly from the module. This feature
lets you register the EDS file for your module from within
RSLinx software by following the steps listed below.
1. Open RSLinx software, version 2.55 or later, and browse for
the module.
2. Right-click the module and select Upload EDS file from device.
The Upload EDS wizard opens.
3. Complete the EDS wizard to register the EDS file.
The EDS file can also be downloaded from
www.ab.com/networks/eds.html
Hardware Installation Tool.
and installed with the RSLinx EDS
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ControlLogix-XT ControlNet Interface Module 21
WARNING
WARNING
ATTENTION
Configure RSLinx Software to Use the USB Port
The ControlNet interface module has a USB device port that uses a
Type B receptacle. The port is USB 1.1-compatible and runs at
12 Mbps. To use the USB port of the 1756-CN2RXT, you must have
inx software, version 2.55 or later, installed on your workstation.
RSL
Use a USB cable to connect your workstation to the USB port. With
this connection, you can download programs to controllers and
configure other devices, which are accessible by the module, directly
from your workstation.
The USB port is intended for temporary local programming purposes only and
not intended for permanent connection. If you connect or disconnect the USB
cable with power applied to this module or any device on the USB network,
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.
A Samtec Inc. RSP-119350 USB cable is required to ma
location certifications.
The 1756-CN2RXT modules, series B, have an industrial Type B USB port. The
port has the same electrical characteristics as other Type B ports, but a higher
cable pull-out rating.
For typical applications in nonhazardous environments, you may use any
high-quality USB cable. If used in a hazardous location, a Samtec Inc.
RSP-119350 USB cable is required to meet the 15-Newton pull test for
hazardous environments.
intain hazardous
The USB cable is not to exceed 3.0 m (9.84 ft) and must not contain hubs.
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22 ControlLogix-XT ControlNet Interface Module
Virtual
Chassis
Driver
USB Port
Driver
Set Up the USB Driver
To configure RSLinx software to use a USB port, first set up a USB
driver by performing this procedure.
1. Connect your 1756-CN2RXT module to your workstation by
alling a USB cable in your module’s USB port.
inst
The workstation monitor displays the Found New Hardware
izard dialog box.
W
2. Click Install the software automatically (Recommended) and
k Next.
clic
The software is installed.
3. Click Finish to set up your USB driver.
4. To view your 1756-CN2RXT module in RSLinx software, click
the RSWho
The RSLinx Workstation organizer appears.
button.
Your 1756-CN2RXT module appears under two different
ers, a virtual chassis and the USB port. You can use either
driv
driver to browse through to your ControlNet module.
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ControlLogix-XT ControlNet Interface Module 23
Module Status Display
Module Status Indicator
Channel Status
Indicators
Status Indicators
The ControlLogix-XT ControlNet module has these status indicators.
Module Status Indicator and Display
The Module Status indicator and Module Status display provide
diagnostic information. Use this table to interpret the Module Status
Indicator and Display.
OK
Indicator
Off None The module is not
Display Cause Recommended Action
1. Check the power supply.
communic
ating due to a
power supply fault or internal
fault.
Publication
Check the cable connectors.
2.
3. Make sure the module is
firmly seated in the chassis.
4. If the indicator remains off,
replace the module.
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24 ControlLogix-XT ControlNet Interface Module
OK
Indicator
Red Reset
Display Cause Recommended Action
CompleteChange
itch
Sw
Settings
FAIL This code is displayed when
Backplane
(1)
t
Ini
Stop Service
eived
Rec
Module’s network address is
et to 00, an invalid
s
ControlNet address.
the power-up test fails.
The module is waiting for the
redundant module to complete
power up.
A non-redundant module is
placed into a redundant
secondary chassis. The
module was commanded to
stop functioning by the
redundancy module
(RM/SRM).
This could occur if a
-CN2RXT module running
1756
Boot code is inserted into a
chassis along with a
1756-SRM or 1756-RM
module.
For redundant control, the
-CN2RXT module is to be
1756
used with a 1756-RM module.
It should not be used with a
1756-SRM module.
1. Remove power from the
chassis.
2. Remove the module from
the chassis.
3. Set the switches to their
final value. See page
.
page 11
4. Replace the module in the
chassis.
5. Apply power to the chassis.
Replace the module.
None required.
1. Remove the non-redundant
le from the redundant
modu
secondary chassis
2. Replace the non-redundant
module with the redundant
module.
1. Insert the module into a
that does not
chassis
contain a 1756-SRM or
1756-RM module.
2. Update the module’s
firmware using ControlFlash
software.
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ControlLogix-XT ControlNet Interface Module 25
OK
dicator
In
Flashing
red
Display Cause Recommended Action
Image
update
Needed
DUPLICATE
NODE
DETECTED
Flash in
progress
TEST Module is executing a
Boot image running.
Main firmware image needs
to be update
The module’s network address
is the same as
module’s on the link.
Flash update is in progress. No action is required.
If communication to the
module is lost during a F
Update, this message will
continue to be displayed even
though the module will not be
able to finish the update.
power
d.
another
-up test.
Update the module’s firmware
using the ControlFlash
by
utility.
1. Remove power from the
chassis.
2. Remove the module from
the chassis.
3. Set the switches to their
final value. See page 11
4. Replace the module in the
chassis.
5. Apply power to the chassis.
You must remove power from
lash
module to recover, and
the
then flash again.
No action is required.
If the display persists for more
tha
n 45 seconds, replace the
module because it has failed.
.
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26 ControlLogix-XT ControlNet Interface Module
OK
dicator
In
Solid
green
Display Cause Recommended Action
OK This is normal operation. There is at least one
connection to or through the
module. No action is required.
INIT Module is initializing. No action is required.
PAS S This message is displayed
momentarily
upon completion
No action is required.
of a successful power-up test.
(1)
CMPT
DSNP
The secondary module is
compatible with its partner.
(1)
The secondary module is
disqualified with no partner.
No action is required.
Check the corresponding slot
of the primary chassis for the
module type and revision.
(1)
PwDS
The module is primary with a
disqualified secondary
Check the type and revision of
1756-CN2RXT module.
the
partner.
(1)
PQgS
PwQS
PwNS
The module is primary with a
qualifying secondary partner.
(1)
The module is primary with a
qualified secondary partner.
(1)
The module is primary with no
secondary partner.
Redundant system status. No
action is required.
Check corresponding slot of
secondary chassis for correct
module.
(1)
QgS
(1)
QS
A#XX This message is the node
The secondary module is
qualifying.
The secondary module is
qualified.
addre
ss where XX is an
Redundant system status. No
action is required.
No action is required.
address from 01...99.
MACID
ITCH
SW
ERROR
Node address switch changed
after you cy
cled power.
No action is required, but we
recommend that you either
return switches to their
original settings or replace the
module, since this could
indicate a latent hardware
anomaly.
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ControlLogix-XT ControlNet Interface Module 27
OK
dicator
In
Solid or
flashing
green
Flashing
green
Display Cause Recommended Action
CPU=XX% This message is the CPU
OK Module is operating normally. No action is required.
OK This is normal operation. No connections to or through
Invalid
Network
onfiguration
C
NET
ERR
Rev XX
utilization rate where XX is
the amount of CPU used,
ranging from 0...99%. This
message occurs only if the
CPU utilization exceeds 80%.
ControlNet configuration error. Recheck configuration.
A network cabling error exists,
or there are no other active
nodes on the network.
.XX When you start the module,
its major and minor revisions
are disclosed, causing this
message to briefly appear.
The display shows these
ions where the major
revis
revision appears to the left of
the decimal point, and the
minor revision to the right.
No action is required.
module exist. No action is
the
required.
Verify that the module’s
net
work address is less than or
equal to the maximum
unscheduled network address
(UMAX).
Recheck your network cabling
make sure another node
and
on the network is active
(online).
No action is required.
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28 ControlLogix-XT ControlNet Interface Module
OK
Indicator
Any Keeper:
Display Cause Recommended Action
Unconfigured
Keeper:
Unconfigured
(data format
changed)
Keeper:
Unconfigured
(slot
changed)
Keeper:
Unconfigured
(net address
changed)
The network configuration
data maintained in flash
memory by the keeper object
has been erased or corrupted.
The network configuration
data maintained in
memory by the keeper object
is in a format incompatible
with the current revision of
firmware.
After the keeper object’s
network-conf
was downloaded, the module
was moved to a different spot
in the chassis.
The network address switches
on the module have
changed since the keeper
object’s network-configuration
data was downloaded.
flash
iguration data
been
Perform any of these steps:
· Use RSNetWorx software to
download or update the
keeper object in the module.
· See Reset the Module to
the Original Factory
Settings, on page 12
Perform any of these steps:
.
· Use RSNetWorx software to
download or update the
keeper object in the module.
· See Reset the Module to
the Original Factory
Settings, on page 12
Perform any of these steps:
.
· Return the module to the
proper slot.
· Use RSNetWorx software to
download or update the
keeper object in the module.
· See Reset the Module to
the Original Factory
Settings, on page 12
Perform any of these steps:
.
· Return the network address
switches to their original
setting.
· Use RSNetWorx software to
download or update the
keeper object in the module.
· See Reset the Module to
the Original Factory
Settings, on page 12
.
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ControlLogix-XT ControlNet Interface Module 29
OK
Indicator
Any
(cont.)
(1)
Display Cause Recommended Action
Keeper:
Signature
Mismatch
Keeper:
None V
on Network
Messages are for redundant control.
The network configuration
data maintained in flash
memory by the keeper object
does not match the current
network configuration.
There is a valid master keeper
on the network.
The network configuration
alid
data maintained in flash
memory by the keeper object
does not match the current
network configuration, and
there is no valid master
keeper on the network.
Use RSNetWorx software to
download or update the keeper
object in the module, or see
Reset the Module to the
Original Factory Settings, on
page
Use RSNetWorx software to
down
object in the module.
Important: The Reset the
Module to the Original Factory
Settings procedure on page
will not work because there is
no valid master keeper from
which to
12.
load or update the keeper
crossload data.
Channel Status Indicators
The ControlNet channel status indicators appear in one of these
states:
• Steady - status indicator is on continuously in the defined
state.
• Alternating - while viewed together, the two indicators
simultaneously alternate between the two defined states. The
two indicators are always in opposite states, out of phase.
• Flashing - when each status indicator is viewed apart from the
other, each status indicator alternates between the two defined
states. If both indicators are flashing, they must flash together,
in phase.
12
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30 ControlLogix-XT ControlNet Interface Module
ControlNet Indicator States (A AND B)
State Cause Action
Off There is no power. No action is required, or apply
.
power
Steady red Unit has faulted. Cycle power or reset unit.
If fault persists, contact a
well Automation
Rock
representative or distributor.
Alternating
d/green
re
Alternating
re
d/off
A self-test is being conducted. No action is required.
Node has been configured
incorrectly.
Check network address and other
ControlNet configuration
ters.
parame
ControlNet Channel Troubleshooting (A OR B)
State Cause Action
Off Channel has been disabled. Program network for redundant media,
if required.
Steady green This is normal operation. No action is required.
Flashing
reen/off
g
Flashing red/off A media fault exists. Check media for broken cables, loose
(1)
The configuration manager node (keeper) is the node responsible for distributing ControlNet
configuration data to all nodes on the network.
Temporary errors exist. None; unit will self-correct.
Node is not configured to go
line.
on
Make sure the configuration manager
node (keeper) is present and working,
and the selected address is not
greater than the maximum
unscheduled node address (UMAX).
connectors, or missing terminators.
No other nodes are present
the network.
on
Add other nodes to the network.
(1)
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ControlLogix-XT ControlNet Interface Module 31
General Specifications - 1756-CN2RXT
Attribute Value
ControlNet connectors 2 BNC connectors
Number of ControlNet nodes, max 99
ControlNet communication rate 5 MB
USB port USB 1.1
USB Device USB, series B, receptacle
USB cable for USB port, recommended Samtec cable, P/N RSP-199350
Connections supported, max 131
Note that 3 of the 131 connections are always
reserved for redundant control. Therefore, 128
connections are available for standard use.
Weight, approx. 0.293 kg (0.64 lb)
North American temperature code T4A
IEC temperature code T4
Slot width 1
Enclosure type rating None (open-style)
Power consumption, max 6.6 W
Power dissipation, max 22.5 BTU/hr
Backplane current @ 5.1V DC 1.3 A @ 5.1V dc
Backplane current @ 24V DC 3 mA @ 24V dc
Isolation voltage 30V (continuous), Basic Insulation Type
Type tested at 853V AC for 60 s, ControlNet to
system and ControlNet port to ControlNet port
Wiring category
(1)
Use this Conductor Category information for planning conductor routing. Refer to Industrial
Automation Wiring and Grounding Guidelines, publication 1770-4.1
(1)
2 - on communication ports
.
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32 ControlLogix-XT ControlNet Interface Module
Environmental Specifications - 1756-CN2RXT
Attribute Value
Temperature, Operating
IEC 60068-2-1 (Test Ad, Operating Cold),
IEC 60068-2-2 (Test Bd, Operating Dry Heat),
IEC 60068-2-14 (Test Nb, Operating Thermal
Shock)
-25…70 °C (-13…158 °F)
Temperature, Nonoperating
IEC 60068-2-1 (Test Ab, Unpackaged
Nonoperating Cold),
IEC 60068-2-2 (Test Bb, Unpackaged
Nonoperating Dry Heat),
IEC 60068-2-14 (Test Na, Unpackaged
Nonoperating Thermal Shock)
Relative Humidity
IEC 60068-2-30 (Test Db, Unpackaged Damp
Heat)
Vibration
IEC 60068-2-6 (Test Fc, Operating)
Operating Shock
IEC 60068-2-27 (Test Ea, Unpackaged Shock)
Shock, Non-operating
IEC 60068-2-27 (Test Ea, Unpackaged Shock)
Emissions
CISPR 11
ESD Immunity
IEC 61000-4-2
-40…85 °C (-40…185 °F)
5…95% noncondensing
2 g @ 10…500 Hz
30 g
50 g
Group 1, Class A
• 6 kV contact discharges
• 8 kV air discharges
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ControlLogix-XT ControlNet Interface Module 33
Attribute Value
Radiated RF Immunity
IEC 61000-4-3
•10V/m with 1 kHz sine-wave 80%
AM from 80…2000 MHz
•10V/m with 200 Hz 50% Pulse
100% AM at 900 MHz
•10V/m with 200 Hz 50% Pulse
100% AM at 1890 MHz
•3V/m with 1 kHz sine-wave 80%
AM from 2000…2700 MHz
EFT/B Immunity
IEC 61000-4-4
±2 kV at 5 kHz on ControlNet ports
Surge Transient Immunity
IEC 61000-4-5
Conducted RF Immunity
IEC 61000-4-6
±1 kV line-earth(CM) on
communications ports
10V rms with 1 kHz sine-wave 80%
AM from 150 kHz…80 MHz
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34 ControlLogix-XT ControlNet Interface Module
Certifications - 1756-CN2RXT
Certification
c-UL-us
CE European Union 2004/108/EC EMC Directive, compliant with:
(1) (2)
Valu e
UL Listed Industrial Control Equipment, certified for US and
Canada. See UL File E65584.
UL Listed for Class I, Division 2 Group A,B,C,D Hazardous
Locations, certified for U.S. and Canada. See UL File E194810.
•EN 61326-1; Meas./Control/Lab., Industrial Requirements
•EN 61000-6-2; Industrial Immunity
•EN 61000-6-4; Industrial Emissions
•EN 61131-2; Programmable Controllers (Clause 8,
Zone A & B)
C-Tick
Ex
Australian Radiocommunications Act, compliant with:
AS/NZS CISPR 11; Industrial Emissions
European Union 94/9/EC ATEX Directive, compliant with:
•EN 60079-15; Potentially Explosive Atmospheres,
Protection "n" (II 3 G Ex nA IIC T4 X)
•EN 60079-0; General Requirements (Zone 2)
CI
(1)
When the product is marked.
(2)
See the Product Certification link at http://www.ab.com for Declarations of Conformity, Certificates,
and other certification details.
ControlNet Int'l conformance tested to ControlNet specifications
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ControlLogix-XT ControlNet Interface Module 35
Additional Resources
These documents contain additional information concerning related
Rockwell Automation products.
Resource Description
Industrial Automation Wiring and Grounding
uidelines, publication
G
ControlNet Modules in Logix5000 Control
Systems User
CNET-UM001
ControlLogix-XT Chassis Installation
Instructions, pub
ControlLogix Power Supplies Installa
Instructions, publication
ControlNet Coax Taps Installation
Instructions, pub
ControlNet Fiber Media Planning and
tion Guide, publication
Installa
ControlNet Coax Media Planning and
tion Guide, publication
Installa
1770-4.1
Manual, publication
1756-IN637
lication
1756-IN639
lication
1786-IN007
CNET-IN001
CNET-IN002
tion
Contains general guidelines for installing
a Rockwell Automation industrial
automation system.
Contains information on how to use
ControlNet modules with various
Logix5000 controllers.
Contains information on how to install a
ControlLogix-XT chassis.
Contains information on how to install the
ControlLogix-XT power supply.
Contains information on how to install
ControlNet coaxial taps.
Contains procedures and specifications
for the installation of ControlNet fiber
media components.
Contains general guidelines for the
installation of ControlNet coax media.
You can download publications at
http://literature.rockwellautomation.com. To order paper copies of
technical documentation, contact your local sales office or Rockwell
omation distributor.
Aut
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Page 36
Rockwell Automation Support
Rockwell Automation provides technical information on the Web to assist you
in using its products. At http://support.rockwellautomation.com
technical manuals, a knowledge base of FAQs, technical and application
notes, sample code and links to software service packs, and a MySupport
feature that you can customize to make the best use of these tools.
For an additional level of technical phone support for installation,
configuration, and troubleshooting, we offer TechConnect support programs.
For more information, contact your local distributor or Rockwell Automation
representative, or visit http://support.rockwellautomation.com
Installation Assistance
If you experience a problem within the first 24 hours of installation, please
review the information that's contained in this manual. You can also contact a
special Customer Support number for initial help in getting your product up
and running.
United States 1.440.646.3434
Outside United States Please contact your local Rockwell Automation representative for any
Monday – Friday, 8 a.m. – 5 p.m. EST
technical support issues.
New Product Satisfaction Return
Rockwell Automation tests all of its products to ensure that they are fully
operational when shipped from the manufacturing facility. However, if your
product is not functioning and needs to be returned, follow these procedures.
United States Contact your distributor. You must provide a Customer Support case number
Outside United States Please contact your local Rockwell Automation representative for the return
Allen-Bradley, ControlFlash, ControlLogix, ControlLogix-XT, FlexI/O-XT, Logix5000, RSLinx, RSLogix
5000, Rockwell Automation, and TechConnect are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
(call the phone number above to obtain one) to your distributor in order to
complete the return process.
procedure.
, you can find
.
Publication 1756-IN634A-EN-P - April 2009 PN-36806
Copyright © 2009 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
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