Allen-Bradley 1768-CNB Installation Instructions Manual
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Installation Instructions
ControlNet Modules
Catalog Numbers 1756-CN2/B, 1756-CN2R/B, 1756-CN2RXT, 1756-CNB/E, 1756-CNBR/E, 1768-CNB,
1768-CNBR
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/ ) 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 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.
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 consequence
SHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous voltage may be present.
BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may reach dangerous temperatures.
IMPORTANT Identifies information that is critical for successful application and understanding of the product.
Allen-Bradley, Compact I/O, CompactLogix, ControlFLASH, ControlLogix-XT, ControlLogix, FLEX I/O-XT, Logix5000, Logix-XT, PanelView, RSLinx, RSLogix, RSNetWorx, Rockwell Software, Rockwell Automation,
RSLogix 5000, RSLinx Classic, RSNetWorx for ControlNet, and TechConnect are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
Preface
Install a 1756 ControlNet
Communication Module
Install a 1768 ControlNet
Communication Module
Redundant Media
USB Communication
Table of Contents
Chapter 1
ControlLogix-XT with Traditional ControlLogix Components. . . . 9
Determine Module Slot Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Connect the Module to a ControlNet Network . . . . . . . . . . . . . . . . . . . . 13
Reset the Module to the Original Factory Settings. . . . . . . . . . . . . . . 15
Keeper Configuration—Automatic Keeper Crossload . . . . . . . . . . . 16
Connect to the Module via the USB Port . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Chapter 2
Grounding Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
If You Use Screws to Mount the Module . . . . . . . . . . . . . . . . . . . . . . . 24
Connect the Module to a ControlNet Network . . . . . . . . . . . . . . . . . . . . 26
Chapter 3
Chapter 4
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 3
Table of Contents
1756 ControlNet Status
Indicators
Appendix A
Interpret the OK Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Interpret the Network Channel Status Indicators. . . . . . . . . . . . . . . . 38
1756-CN2/B, 1756-CN2R/B, and 1756-CN2RXT
ControlNet Communication Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
OK Status Indicator and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Network Channel Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
ControlNet Communication Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
OK Status Indicator and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Network Channel Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
1768 ControlNet Module Status
Indicators
Appendix B
1768-CNB and 1768-CNBR ControlNet Modules . . . . . . . . . . . . . . . . . 47
OK Status Indicator and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Network Channel Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
4 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
Additional Resources
Preface
This manual describes how to install and start up ControlNet modules with
Logix5000 controllers.
You should use this manual if you program applications that use the ControlNet network with one of these Logix5000 controllers:
•
CompactLogix controller
•
ControlLogix controller
You should also understand the following:
•
Networking concepts
•
RSLogix 5000 software
•
RSLinx Classic software
•
RSNetWorx for ControlNet software
For more information on the products included in this publication, use the publications listed in this table.
Resource
ControlNet Network Configuration User Manual, publication CNET-UM001
ControlNet Coax Media Planning and Installation
Guide, publication CNET-IN002
ControlNet Standard and High-flex Coax Cable
Installation Instructions, publication 1786-IN009
Description
Provides details about how to use ControlNet communication modules with Logix5000 controllers and communicate with other devices on the ControlNet network.
Describes the required components of a
ControlNet coax media system.
Provides application information you need to consider when you install standard RG-6 (catalog number 1786-RG6/A) and high-flex RG-6 (catalog number 1786-RG6F/A) coax cable in your
ControlNet network.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 5
Preface
Notes:
6 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
Chapter
1
Install a 1756 ControlNet Communication
Module
Topic
Determine Module Slot Location
Connect the Module to a ControlNet Network
Connect a Programming Terminal to the Network with a
Connect to the Module via the USB Port
Page
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 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 the following:
•
Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1
,for additional installation requirements
•
NEMA Standard 250 and IEC 60529, as applicable, for explanations of the degrees of protection provided by enclosures
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 7
Chapter 1 Install a 1756 ControlNet Communication Module
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.
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.
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.
WARNING: 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.
European Hazardous Location Approval
The following applies when the product bears the Ex 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 Zone 2 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.
WARNING:
•
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 Rockwell Automation.
•
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 Rockwell Automation 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.
ATTENTION: This equipment is not resistant to sunlight or other sources of UV radiation.
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Install a 1756 ControlNet Communication Module Chapter 1
ATTENTION: Prevent 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.
ATTENTION: Personnel responsible for the application of safety-related programmable electronic systems (PES) shall be aware of the safety requirements in the application of the system and shall be trained in using the system.
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 environments where the temperature ranges from -25...70 °C (-13...158 °F).
ControlLogix-XT with Traditional ControlLogix Components
IMPORTANT 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 are 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 and greater operational and environmental requirements as traditional
ControlLogix products.
When a ControlLogix-XT component is used as a replacement for a traditional ControlLogix component, the functional and environmental requirements of the traditional ControlLogix component apply.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 9
Chapter 1 Install a 1756 ControlNet Communication Module
Redundant Media
These 1756 ControlNet bridge modules have two ControlNet ports to support redundant media:
•
1756-CN2R/B
•
1756-CN2RXT
•
1756-CNBR/E
For information about using these modules with redundant media, refer to
Installation Summary
To install a communication module in a 1756 ControlLogix chassis, complete these steps.
1.
Determine Module Slot Location .
2.
3.
.
4.
Connect the Module to a ControlNet Network .
5.
.
6.
7.
Connect a Programming Terminal to the Network with a 1786-CP Cable .
8.
Connect to the Module via the USB Port
.
Determine Module Slot
Location
Install the communication module in any slot in the ControlLogix chassis. You can install multiple communication modules in the same chassis. This example shows chassis slot numbering in a 4-slot chassis. Slot 0 is the first slot and is always the leftmost slot in the rack.
3 4 5 6
1
20806
2
4
5
6
2
3
Item
1
Description
Power supply
Chassis
Slot 0
Slot 1
Slot 2
Slot 3
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Install a 1756 ControlNet Communication Module Chapter 1
This example shows chassis slot numbering in a ControlLogix-XT chassis.
Slot 0
Slot 1
Slot 2
Slot 3
Slot 4
Set the Node Address
Use a small screwdriver to set the module’s node address switches. You must specify a unique ControlNet node address. You can select an address of 01…99.
Address 00 is an invalid ControlNet node address.
Side of Module Top of Module
This module’s node address is 23.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 11
Chapter 1 Install a 1756 ControlNet Communication Module
Install the Module
WARNING: 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.
To install the module, follow this procedure.
1.
Align the circuit board with the top and bottom guides in the chassis.
2.
Slide the module into the chassis making sure the module backplane connector properly connects to the chassis backplane.
The module is properly installed when it is flush with the power supply or other installed modules.
Circuit
Board
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 into the chassis can damage the backplane connector or the module.
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Install a 1756 ControlNet Communication Module Chapter 1
Connect the Module to a
ControlNet Network
You can connect the module to the ControlNet network by using a tap (catalog number 1786-TPR, 1786-TPS, 1786-TPYR, 1786-TPYS, or 1786-TCT2BD1).
WARNING: If you connect or disconnect the communication 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.
WARNING: The network access port (NAP) on 1756-CNB/E and
1756-CNBR/E modules is intended for temporary local programming purposes only and not intended for permanent connection. If you connect or disconnect the NAP 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.
WARNING: The USB port on 1756-CN2/B, 1756-CN2R/B, and
1756-CN2RXT modules 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.
This example shows a ControlNet network using redundant media.
1756-CN2R/B
Module in a
1756-A4 Chassis
ControlNet Node
Redundant Media
(Optional)
ControlNet Link
ControlNet Node
TIP For network connections, we recommend taps with a straight connector
(catalog number 1786-TPS or 1786-TPYS) because of the location of the
BNC connectors on the bottom of the module.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 13
Chapter 1 Install a 1756 ControlNet Communication Module
To connect the module to the network with a tap, perform this procedure.
1.
Remove and save the dust caps from the ControlNet taps.
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.
Trunkline A Trunkline B
1756-CN2/B Trunkline A
1756-CN2R/B Trunklines A and B
Dust Cap
Dust Cap
2.
Connect the tap’s straight or right-angle connector to the module’s BNC connector.
If your network supports
Nonredundant media
(all 1756-CN x modules)
Redundant media
(1756-CNBR/E, 1756-CN2R/B, and
1756-CN2RXT modules)
Then connect the tap’s connector
From trunkline A to channel A on the module.
From trunkline A to channel A on the 1756-CN2R/B module.
From trunkline B to channel B on the 1756-CN2R/B module.
IMPORTANT To 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.
Nonredundant Media Redundant Media
Network 1
Network 2
A B
A
Tap
Tap Tap
3.
Apply power to the module and check the status indicators to determine whether the power supply and module are operating properly.
For more information about status indicators, refer to Chapter A
.
14 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
Remove the Module
Install a 1756 ControlNet Communication Module Chapter 1
You can install or remove this module while chassis power is applied.
WARNING: 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.
To remove or replace the module, use this procedure.
1.
Push on the upper and lower module tabs to disengage them.
2.
Slide the module out of chassis.
The figure shows the removal of a 1756-CN2RXT module.
X
T
X
T
Reset the Module to the Original Factory Settings
If you are using a 1756-CN2/B, 1756-CN2R/B, or 1756-CN2RXT communication module, you can reset the module to its original settings and clear all keeper information.
To reset a module to its factory settings, complete these steps.
1.
Remove power from the chassis.
IMPORTANT Removing power from the chassis before removing the module is only necessary if the module is in a Class I, Division 2 hazardous location.
2.
Remove the module from the chassis.
3.
Reset the switches to 00.
IMPORTANT Do not use the 00 switch setting during normal module operation.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 15
Chapter 1 Install a 1756 ControlNet Communication Module
4.
Replace the module in the chassis.
5.
Apply power to the chassis.
6.
After the module status display reads ‘Reset Complete—Change Switch
Settings’, remove power from the chassis.
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.
Keeper Configuration—Automatic Keeper Crossload
The 1756-CN2/B, 1756-CN2R/B, and 1756-CN2RXT communication modules are keeper capable modules. If a keeper capable module has a valid configuration and has the lowest address among the keeper capable nodes on the network, it becomes the active keeper. The active keeper is the node that distributes network configuration information to other nodes as the network is formed or as nodes are added to the network.
When the module is first removed from the box or is reset to the original factory settings, it will automatically attempt to crossload configuration information from the current active keeper. If a active keeper with a valid network configuration is present on the active network, the configuration crossload will succeed. No user intervention is needed. However, if an active keeper does not exist or does not have a valid network configuration, you must use RSNetWorx for ControlNet software to download the network configuration information.
16 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
Install the EDS File
Install a 1756 ControlNet Communication Module Chapter 1
For the 1756-CN2/B, 1756-CN2R/B, and 1756-CN2RXT modules, 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.
Use the steps below to register the EDS file from within RSLinx software.
1.
Open RSLinx software and browse for the module.
• RSLinx software, version 2.51 or later, is required for the 1756-CN2/B or 1756-CN2R/B module.
•
RSLinx software, version 2.55 or later, is required for the 1756-
CN2RXT module.
2.
Right-click the module and choose 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 http://www.ab.com/networks/ eds.html
and installed by using the RSLinx EDS hardware installation tool.
Connect a Programming
Terminal to the Network with a 1786-CP Cable
To connect a programming terminal to the network using a 1786-CP cable, you have the following options:
• Use a 1784-KTC, 1784-KTC x, 1784-PCC, or 1784-PCICS communication card and a 1786-CP cable.
1756-CNBR/E
1784-KTC, 1784-KTC x ,
1784-PCC, or 1784-PCICS Card
1786-CP Cable
ControlNet Link
• Use a 1770-KFC communication interface, a serial or parallel connection, and a 1786-CP cable.
1756-CNBR/E
1770-KFC
1786-CP
Cable
Serial or Parallel
Connections
ControlNet Link
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 17
Chapter 1 Install a 1756 ControlNet Communication Module
The 1786-CP cable can be plugged into any ControlNet network product’s NAP to provide programming capability on the ControlNet network. A programming terminal connected through this cable is counted as a node and must have a unique network address.
ATTENTION: Use a 1786-CP cable when connecting a programming terminal to the network through an NAP. Using a commercially available
RJ-style cable could result in network failure.
WARNING: The NAP is intended for temporary local programming purposes only and not intended for permanent connection. If you connect or disconnect the NAP cable with power applied to 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 to the Module via the USB Port
The 1756-CN2/B, 1756-CN2R/B, and 1756-CN2RXT communication modules include a USB port. For more information about USB setup and
configuration, refer to Appendix A .
WARNING: 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 maintain hazardous location certifications.
WARNING: Series B of the 1756-CN2, 1756-CN2R, and 1756-CN2RXT modules 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.
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Install a 1756 ControlNet Communication Module Chapter 1
The USB port on ControlNet modules uses a Type B receptacle. The port is
USB 1.1-compatible and runs at 12 Mbps.
•
To use the USB port with a 1756-CN2/B or 1756-CN2R/B module, you must have RSLinx software, version 2.51 or later, installed on your computer.
•
To use the USB port with a 1756-CN2RXT module, you must have
RSLinx software, version 2.55 or later, installed on your computer.
Use a USB cable to connect your computer to the USB port. The connection lets you download programs to controllers and configure other devices, which are accessible by the module, directly from your computer.
ATTENTION: The USB cable is not to exceed 3.0 m (9.84 ft) and must not contain hubs.
IMPORTANT Do not simultaneously upgrade the firmware for more than one module at a time through a USB port. If you do, one or more of the updates may fail in the middle of the upgrade.
For more information about setting up a USB port, refer to Chapter 4 .
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 19
Chapter 1 Install a 1756 ControlNet Communication Module
Notes:
20 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
Chapter
2
Install a 1768 ControlNet Communication
Module
Topic
Connect the Module to a ControlNet Network
Page
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 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 the following:
•
Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1
, for additional installation requirements
•
NEMA Standard publication 250 and IEC 60529, as applicable, for explanations of the degrees of protection provided by enclosures
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 21
Chapter 2 Install a 1768 ControlNet Communication Module
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: 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.
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.
WARNING: 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.
ATTENTION: Prevent 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.
Redundant Media
The 1768-CNBR bridge module has two ControlNet ports to support redundant media. For information about using the module with redundant media, refer to
22 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
Installation Summary
Set the Node Address
Install a 1768 ControlNet Communication Module Chapter 2
To install a communication module in a 1768 ControlLogix chassis, complete these steps.
1.
2.
.
3.
Connect the Module to a ControlNet Network .
4.
.
Grounding Considerations
ATTENTION: This product is grounded through the DIN rail to chassis ground. Use zinc-plated yellow-chromate steel DIN rail to assure proper grounding. The use of other DIN rail materials (for example, aluminum or plastic) that can corrode, oxidize, or are poor conductors, can result in improper or intermittent grounding. Secure DIN rail to mounting surface approximately every 200 mm (7.87 in.) and use end-anchors appropriately.
Use a small screwdriver to set the module’s node address switches. You must specify a unique ControlNet node address. You can select an address of 01…99.
Address 00 is an invalid ControlNet node address.
Top of Module
NETWORK
ADDRESS
40
30
50
60
70
20
10
3
4
2
1
00
5
6
80
90
0
9
7
8
NETWORK
ADDRESS
30
40
20
10
3
4
2
1
50
00
5
60
70
90
80
6
7
0
9
8
This module’s node address is 21.
31651- M
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 23
Chapter 2 Install a 1768 ControlNet Communication Module
Install the Module
To install the module, follow this procedure.
If You Use Screws to Mount the Module
IMPORTANT Do not use screws and DIN rail to mount the module. It is possible to break the mounting tabs off if you screw the module to the panel while they are on DIN rail.
The instructions show how to mount the module on DIN rail. If you are using screws instead of DIN rail, make these changes to the instructions.
Refer to Industrial Automation Wiring and Grounding Guidelines, publication
1770-4.1
, for additional information.
1.
Use the module as a template and mark pilot holes on your panel.
2.
Drill the pilot holes for M4 or #8 screws.
3.
Use M4 or #8 screws to mount the module to your panel.
Use 1.16 N•m (10 lb•in) of torque.
4.
Ground the module on a ground bus with a dedicated earth ground stake.
5.
Connect the ground bus to a functional earth ground on the DIN rail or panel.
Mount on a DIN Rail
Follow these steps to install the module on a DIN rail.
1.
Mount the DIN rail in a suitable location.
ATTENTION: This product is grounded through the DIN rail to chassis ground. Use zinc-plated yellow-chromate steel DIN rail to assure proper grounding. The use of other DIN rail materials (for example, aluminum or plastic) that can corrode, oxidize, or are poor conductors, can result in improper or intermittent grounding.
Secure DIN rail to mounting surface approximately every 200 mm
(7.8 in.) and use end-anchors appropriately.
2.
Mount the module on the DIN rail, as shown.
24 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
Install a 1768 ControlNet Communication Module Chapter 2
1
1768-CNB Module 1768-CNBR Module
(rear)
(front)
31646A-M 31646AB-M
2 c
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 25
Chapter 2 Install a 1768 ControlNet Communication Module
Connect the Module to a
ControlNet Network
You can connect the module to the ControlNet network by using a tap (catalog number 1786-TPR, 1786-TPS, 1786-TPYR, 1786-TPYS, or 1786-TCT2BD1) or a network access cable (catalog number 1786-CP).
Refer to the ControlNet Coax Media Planning and Installation Guide, publication CNET-IN002 , for additional information.
WARNING: If you connect or disconnect the communication 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.
ATTENTION: 1768 modules are not designed for removal and insertion under power. Removal or insertion of a 1768 module while power is applied can result in module damage or unintended operation.
The 1768-CNB and 1768-CNBR modules have a network access port (NAP) available.
WARNING: The NAP is intended for temporary local programming purposes only and not intended for permanent connection. If you connect or disconnect the NAP 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.
Perform the following steps to connect the module to the network by using a tap.
1.
Remove and save the dust caps from the ControlNet network taps.
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.
Trunkline A Trunkline B
1768-CNB Trunkline A
1768-CNBR Trunklines A and B
Dust Cap
Dust Cap
26 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
Install a 1768 ControlNet Communication Module Chapter 2
2.
Connect the tap’s straight or right-angle connector to the module’s BNC connector.
If your network supports Connect the tap’s connector
Nonredundant media
(1768-CN x modules)
From trunkline A to channel A on the module.
Redundant media
(1768-CNBR modules)
• From trunkline A to channel A on the 1768-CNBR module.
• From trunkline B to channel B on the 1768-CNBR module.
IMPORTANT To avoid accidentally reversing the tap connections on 1768-CNBR installations, 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.
Nonredundant Media
NETWORK
ADDRESS
04
03
05
06
07
02
01
3
4
00
5
08
09
6
7
2
1
0
9
8
Redundant Media
NETWORK
ADDRESS
04
05
03
06
07
02
01
3
4
00
5
08
09
6
7
2
1
0
9
8
A
Network 1
Network 2
A B
Tap Tap Tap
31653- M
3.
Apply power to the module and check the status indicators to determine whether the power supply and module are operating properly.
Remove the Module
To remove or slide a module, turn off the power and pull out the DIN rail connectors on the module. After you turn off the power, wait for all of the lights on the power supply and controller to turn off before you disconnect any modules.
ATTENTION: 1768 modules are not designed for removal and insertion under power. Removal or insertion of a 1768 module while power is applied can result in module damage or unintended operation.
IMPORTANT When you turn the CompactLogix power supply off, make sure you wait for all status indicators on the power supply and controller to turn off before disconnecting any part from the system.
If you disconnect the CompactLogix system while the controller is still writing its program to memory, the program write will not be completed and you will lose your program.
•
When you turn off the power, the controller writes its project to memory.
•
If you don’t wait for the lights to turn off, you will lose your project.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 27
Chapter 2 Install a 1768 ControlNet Communication Module
Remove a module as shown below.
1
2
28 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
Chapter
3
Redundant Media
Use Redundant Media
Topic
Page
These ControlNet bridge modules support redundant media:
•
1756-CN2R/B
•
1756-CN2RXT
•
1756-CNBR/E
•
1768-CNBR
You can run a second trunk cable between ControlNet nodes for redundant media. With redundant media, nodes send signals on separate trunks. The receiving node compares the quality of the two signals and permits use of the better signal while retaining the other signal on a back-up cable should the primary trunk cable fail.
Trunk cables on a redundant cable link are defined by the segment number and the redundant trunk-cable letter.
Actual ControlNet products are labeled with these icons:
The shaded icon represents redundant media.
In this example, the redundant trunk cable is trunk cable B.
IMPORTANT ControlNet redundant media can tolerate only one fault. If there is a fault on both channel A and B, network integrity is not guaranteed.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 29
Chapter 3 Redundant Media
Figure 1 - Redundant Media Example
Trunk Cable A
Trunk Cable B
Node
Node
Node
To use redundant media, all nodes must support redundant media.
Observe these guidelines when planning a redundant media system in a hazardous area:
•
Route trunk cables A and B differently to reduce the chance of both cables being damaged simultaneously.
–
Trunk cables A and B may contain different lengths of cable if you are using 1786-RPA/B repeater adapters. However, the difference in length must not exceed 800 m (2640 ft).
–
Trunk cables A and B must have identical configurations. Each segment must contain the same number of taps, nodes, and repeaters. Connect nodes and repeaters in the same relative sequence on both trunk cables.
•
Each node on a redundant-cable link must support redundant coax connections and be connected to both trunk cables at all times. Any nodes connected to only one side of a redundant-cable link will result in media errors on the unconnected trunk cable.
•
Install the cable system so that the trunk cables at any physical device location can be easily identified and labeled with the appropriate icon or letter. Each redundant ControlNet device is labeled so you can connect it to the corresponding trunk cable.
30 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
Trunk Cable A
Trunk Cable B
Terminators
Figure 2 - Redundant Media System
Redundant Media Chapter 3
Terminators
Terminators
Node Node
Repeater B
Repeater A
Terminators
Power
OU T
Node Node
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 31
Chapter 3 Redundant Media
IMPORTANT We recommend you do not mix cable connections when using redundant cabling, such as connecting trunk cable A to the B connector on the node.
Mixing cable connections makes it difficult to interpret cable fault indications and locate a bad cable segment.
When in Redundant Cable mode, each node independently decides whether to use channel A or channel B. This decision is based on error counters internal to each node. Redundant cabling is only valid if there is only one fault on the network. In other words, if you have a proper redundant cabling system and you remove node 3 on trunk A and node 4 on trunk B, the system will not operate correctly because a double failure has occurred.
Additional Resources
For more information, consult the ControlNet Standard and High-flex Coax
Cable Installation Instructions, publication 1786-IN009 .
32 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
Chapter
4
USB Communication
Set Up a USB Driver
Topic
Page
The 1756-CN2/B, 1756-CN2R/B, and 1756-CN2RXT ControlNet modules support USB communication.
To configure RSLinx software to use a USB port, you need to first set up a USB driver. Before you begin, make sure you have the correct version of RSLinx software.
ControlNet Module
1756-CN2RXT
1756-CN2/B or 1756-CN2R/B
Required Version of RSLinx Software
2.55 or later
2.51 or later
To set up a USB driver, perform this procedure.
1.
Connect your ControlNet module to your computer by installing a USB cable in your module’s USB port.
The RSLinx Found New Hardware Wizard dialog box appears.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 33
Chapter 4 USB Communication
2.
Click Install the Software Automatically (Recommended), and then click
Next.
The following dialog boxes appear consecutively.
34
3.
Click Finish to set up your USB driver.
4.
To view modules in RSLinx software, from the Communications pulldown menu, choose RSWho.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
The RSLinx Workstation organizer appears.
USB Communication Chapter 4
Virtual Chassis Driver
USB Port Driver
Your ControlNet modules appear under two different drivers, a virtual chassis and the USB port. You can use either driver to browse through your
ControlNet modules.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 35
Chapter 4 USB Communication
Notes:
36 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
1756 ControlNet Status Indicators
Appendix
A
Topic
1756-CN2/B, 1756-CN2R/B, and 1756-CN2RXT ControlNet Communication
1756-CNB/E and 1756-CNBR/E ControlNet Communication Modules
Page
The 1756 ControlNet communication modules and adapters support these status indicators.
Status Indicator
OK status indicator
Network channel status indicators
Description
Indicates the module’s current state.
Indicates the status of network channels A and B.
Network Channel
Status Indicators
Status Display
OK Status Indicator
Interpret the OK Status Indicator
IMPORTANT The OK status indicator reflects the module state, such as the running of a self-test, the updating of firmware, and normal operation without an established connection.
When you view the status indicators, always view the OK status indicator first to determine the state of the module. This information may help you to interpret the network channel status indicators. As a general practice, view all status indicators together to gain a full understanding of the module’s status.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 37
Appendix A 1756 ControlNet Status Indicators
Interpret the Network Channel Status Indicators
The network channel status indicators appear in one of these states:
•
Steady—The indicator is on continuously in the defined state.
• Alternating—The two indicators alternate between the two defined states at the same time (applies to both indicators viewed together). The two indicators are always in opposite states, out of phase.
• Flashing—The indicator alternates between the two defined states (applies to each indicator viewed independent of the other). If both indicators flash, they must flash together, in phase.
IMPORTANT When you connect the module to a ControlNet network using only the
NAP, the channel A and channel B indicators are meaningless.
1756-CN2/B, 1756-CN2R/B, and 1756-CN2RXT
ControlNet Communication
Modules
This section provides the following information about status indicators:
• To understand the OK status indicator and display messages, refer to
Table 1 on page 39 .
•
For information about viewing the network channel status indicators
together, refer to Table 2 on page 42 .
• For information about viewing the network channel status indicators individually, refer to Table 3 on page 42 .
38 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
1756 ControlNet Status Indicators Appendix A
OK Status Indicator and Display
Table 1 - OK Status Indicator and Display
Status
Off
Steady Red
Flashing red
Display
None
Reset Complete—Change Switch
Settings
FAIL
Backplane Init
(1)
Stop Service Received
Image update Needed
DUPLICATE NODE DETECTED
Flash in progress
TEST
Description
The module is not communicating due to a power supply fault or internal fault.
Do any of the following:
• Check the power supply.
• Check the cable connectors.
• Make sure the module is firmly seated in the chassis.
• If the indicator remains off, replace the module.
The module’s network address is set to 00, an invalid ControlNet address.
Remove the module from the chassis, and set the network address to a valid value.
For more information, refer to
This code is displayed when the power-up test fails.
Replace the module.
The module is waiting for the redundant module to complete powerup.
A nonredundant module is placed into a redundant secondary chassis. The module was commanded to stop functioning by the redundancy module (RM/SRM).
Remove the nonredundant module from the redundant secondary chassis, and then replace the nonredundant module with the redundant module.
This could occur if a 1756-CN2/B or 1756-CN2R/B module running Boot code is inserted into a chassis along with a 1756-SRM or 1756-RM module.
For use in an enhanced redundancy system, the 1756-CN2/B module is designed to interoperate with a 1756-RM module. It should not be used with a 1756-SRM module.
Insert the module into a chassis that does not contain a 1756-SRM or 1756-RM module, and then update the module’s firmware with ControlFLASH software.
The Boot image is running.
Update the module’s firmware with ControlFLASH software.
The module’s network address is the same as another module’s on the link.
Remove the module from the chassis, and set the network address to a unique value. For more information, refer to
.
A firmware update is in progress.
If communication to the module is lost during an update, this message will continue to be displayed even though the module will not be able to finish the update.
Remove power from the module to recover, and then perform the update again.
The module is executing a power-up test.
If the display persists for more than 45 seconds, replace the module because it has failed.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 39
Appendix A 1756 ControlNet Status Indicators
Table 1 - OK Status Indicator and Display
Status
Steady Green
Display
OK
INIT
PASS
CMPT
(1)
DSNP
(1)
PwDS
(1)
PQgS
(1)
PwQS
(1)
PwNS
(1)
QgS
(1)
QS
(1)
A# xx
MACID SWITCH ERROR
Steady green or flashing green
Flashing green
CPU= xx %
OK
OK
Invalid Network Configuration
NET ERR
Rev xx.xx
Description
This is normal operation. There is at least one connection to or through the module.
The module is initializing.
This message is displayed momentarily upon completion of a successful power-up test.
The secondary module is compatible with its partner.
The secondary module is disqualified with no partner.
Check the corresponding slot of the primary chassis for the module type and revision.
The module is primary with a disqualified secondary partner.
Check the type and revision of the 1756-CN2/B module.
The module is primary with a qualifying secondary partner.
The module is primary with a qualified secondary partner.
The module is primary with no secondary partner.
Check corresponding slot of secondary chassis for correct module.
The secondary module is qualifying.
The secondary module is qualified.
This message is the node address where xx is an address from 01...99.
Node address switch changed after you cycled power.
We recommend that you either return switches to their original settings or replace the module, as this could indicate a latent hardware anomaly.
This message is the CPU utilization rate where xx is the amount of CPU used, ranging from 0...99%. This message occurs only if the CPU utilization exceeds 80%.
The module is operating normally.
This is normal operation. No connections to or through the module exist.
ControlNet configuration error.
Recheck the configuration.
Verify that the module’s network address is less than or equal to the maximum unscheduled network address (UMAX).
A network cabling error exists, or there are no other active nodes on the network.
Recheck your network cabling and make sure another node on the network is active
(online).
When you start the module, its major and minor revisions are disclosed causing this message to briefly appear.
The display shows these revisions where the major revision appears to the left of the decimal point, and the minor revision appears to the right.
40 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
1756 ControlNet Status Indicators Appendix A
Table 1 - OK Status Indicator and Display
Status
Any
Display
Keeper: Unconfigured
Description
The network configuration data maintained in memory by the keeper object has been erased or corrupted.
Do any of the following:
• Use RSNetWorx software to download or update the keeper object in the module.
• Reset the module to the original factory settings, as described on
Keeper: Unconfigured (data format changed)
Keeper: Unconfigured (slot changed) After the keeper object’s network-configuration data was downloaded, the module was moved to a different spot in the rack.
Do any of the following:
• Return the module to the proper slot.
• Use RSNetWorx software to download or update the keeper object in the module.
• Reset the module to the original factory settings, as described on
Keeper: Unconfigured (net address changed)
The network configuration data maintained in memory by the keeper object is in a format incompatible with the current revision of firmware.
Do any of the following:
• Use RSNetWorx software to download or update the keeper object in the module.
• Reset the module to the original factory settings, as described on
The network address switches on the module have been changed since the keeper object’s network-configuration data was downloaded.
Do any of the following:
• Return the network address switches to their original setting.
• Use RSNetWorx software to download or update the keeper object in the module.
• Reset the module to the original factory settings, as described on
Keeper: Signature Mismatch
Keeper: None Valid on Network
The network configuration data maintained in memory by the keeper object does not match the current network configuration.
There is a valid active keeper on the network.
Do any of the following:
• Use RSNetWorx software to download or update the keeper object in the module.
• Reset the module to the original factory settings, as described on
The network configuration data maintained in memory by the keeper object does not match the current network configuration, and there is no valid active keeper on the network.
Use RSNetWorx software to download or update the keeper object in the module.
Important:
The Install the Module procedure on page 12 will not work because
there is no valid active keeper from which to crossload data.
(1) ControlLogix enhanced redundancy systems only.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 41
Appendix A 1756 ControlNet Status Indicators
Network Channel Status Indicators
Table 2 - Network Channel Status Indicators A and B
Status
Off
Steady red
Alternating red/green
Alternating red/off
Description
There is no power.
Unit has faulted.
Cycle power or reset unit. If the fault persists, contact a Rockwell Automation representative or distributor.
A self-test is being conducted.
Node has been configured incorrectly.
Check network address and other ControlNet configuration parameters.
Table 3 - Network Channel Status Indicators A or B
Status
Off
Steady green
Flashing green/off
Flashing red/off
Description
Channel has been disabled.
Program the network for redundant media, if required.
This is normal operation.
Temporary errors exist. The unit will self-correct.
Node is not configured to go online.
Make sure that the configuration manager node (keeper) is present and working and the selected address is not greater than the maximum unscheduled node address (UMAX).
(1)
A media fault exists.
Check media for broken cables, loose connectors, or missing terminators.
No other nodes are present on the network.
Add other nodes to the network.
(1) The configuration manager node (keeper) is the node responsible for distributing ControlNet configuration data to all nodes on the network.
42 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
1756 ControlNet Status Indicators Appendix A
1756-CNB/E and 1756-
CNBR/E ControlNet
Communication Modules
This section provides the following information about status indicators:
•
To understand the OK status indicator and display messages, refer to
Table 4 below.
•
For information about viewing the network channel status indicators
together, refer to Table 5 on page 46 .
•
For information about viewing the network channel status indicators individually, refer to
.
Table 4 - OK Status Indicator and Display
Status
Off
Display
None
Steady red Msg scrolls
(1)
BPA# ERR
BPRX ERR
BPIC ERR
CNIC ERR
DUPL NODE
RACK ERR
STOP
WAIT RM
(2) or
WAIT SRM
OK Status Indicator and Display
Description
The module is not communicating due to a power supply fault or internal fault.
Do any of the following:
• Check the power supply.
• Check the cable connectors.
• Make sure the module is firmly seated in the chassis.
• If the status indicator remains off, replace the module.
The module’s network address is set to 00, an invalid ControlNet address, or 99, an invalid ControlNet address if you are using enhanced redundancy control. See the footnote at the end of the table.
Remove the module from the chassis, and set the network address to a valid value.
For more information, refer to Chapter 1
.
The module has detected a different slot address from that latched in when the module was started. Excessive noise on the backplane causes this error.
Replace the chassis or module.
Too many CRC errors are being generated by the multicast backplane receiver, so the backplane multicast receivers have been shut off.
Replace the module.
Hardware within the module has faulted.
Replace the module.
For enhanced redundancy systems, this may be a temporary condition during chassis switchover. Otherwise, the module’s network address is the same as another module’s on the link.
For enhanced redundancy systems only, wait 10 seconds. If the condition persists, remove the module from the chassis, and set the switches to a unique address. For
more information, refer to Chapter 1
.
The module cannot read the backplane EEPROM, or the rack/slot address is incorrect.
Replace the chassis.
The 1756-CNB/E module was commanded to stop functioning by the redundancy module. This occurs when a non-redundancy-compliant 1756-CNB/E module is placed into a redundant secondary chassis.
Remove the nonredundancy-compliant 1756-CNB/E module from the redundant secondary chassis and replace it with a redundant 1756-CNBR/E module.
The 1756-CNB/E module is waiting for the redundancy module to be started.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 43
Appendix A 1756 ControlNet Status Indicators
Table 4 - OK Status Indicator and Display
Status
Flashing red
Display
BOOT
ROM UPDT
SNGL KPR!
Steady green OK
INIT
BW >MAX
Flashing green
PwNS
SW ERR
CNFG ERR
NET ERR
OK
Description
The module has invalid firmware.
Update the module’s firmware with ControlFLASH software.
A firmware update is in progress.
The module has detected that it has been connected to a ControlNet single-keeper network, version 1.0 or 1.25.
Update the firmware of module at node address 01 and reschedule the network.
Normal operation is occurring. At least one connection has been made to or through the module.
The module is initializing.
The module is receiving too much network traffic and connections are timing out.
The network bandwidth has been exceeded.
No action is required because this is a temporary condition.
If this happens frequently, add another module and split the traffic between them.
The secondary 1756-CNB/E module is compatible with its partner.
The 1756-CNB/E module is disqualified without a partner.
Check corresponding slot of primary chassis for type and revision of module.
The 1756-CNB/E module is primary with a disqualified secondary partner.
Check the type and revision of the module.
The 1756-CNB/E module is primary with a qualifying secondary partner.
The 1756-CNB/E module is primary with a qualified secondary partner.
The 1756-CNB/E module is primary with no secondary partner.
Check the corresponding slot of the secondary chassis for the correct module.
The secondary 1756-CNB/E module is qualifying.
The secondary 1756-CNB/E module is qualified.
The node address switch changed after the module was started.
We recommend that you either return the switches to their original settings or replace the module, since this condition could indicate a latent hardware anomaly.
The ControlNet network was configured incorrectly.
Recheck the ControlNet network configuration.
A network cabling error exists, or no other active nodes exist on the network.
Recheck your network cabling and make sure another node on the network is active
(online).
Normal operation is occurring. No connections have been made to or through the module.
44 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
1756 ControlNet Status Indicators Appendix A
Table 4 - OK Status Indicator and Display
Status
Steady green or off
Display
SO_1
SO_2
SO_3
SN_1
SN_2
SN_3
?Cpt
!Cpt
Description
Old primary switchover phase 1 is in progress.
If the display shows this message for more than 3 seconds, then the 1756-CNB/E module failed during transition from one redundancy phase to another. Replace one or both redundancy modules.
Old primary switchover phase 2 is in progress.
If the display shows this message for more than 3 seconds, then the 1756-CNB/E module failed during transition from one redundancy phase to another. Replace one or both redundancy modules.
Old primary switchover phase 3 is in progress.
If the display shows this message for more than 3 seconds, then the 1756-CNB/E module failed during transition from one redundancy phase to another. Replace one or both redundancy modules.
New primary switchover phase 1 is in progress.
If the display shows this message for more than 3 seconds, then the 1756-CNB/E module failed during transition from one redundancy phase to another. Replace one or both redundancy modules.
New primary switchover phase 2 is in progress.
If the display shows this message for more than 3 seconds, then the 1756-CNB/E module failed during transition from one redundancy phase to another. Replace one or both redundancy modules.
New primary switchover phase 3 is in progress.
If the display shows this message for more than 3 seconds, then the 1756-CNB/E module failed during transition from one redundancy phase to another. Replace one or both redundancy modules.
The 1756-CNB/E module has not determined if it is compatible.
If the display shows this message for more than 3 seconds, then the 1756-CNB/E module failed during transition from one redundancy phase to another. Replace one or both redundancy modules.
The 1756-CNB/E module has determined that it is not compatible.
Replace the 1756-CNB/E module with one of the correct type and revision.
(1) If switches are set to 00, the display scrolls ‘FAULT: ADDRESS SWITCHES = 00, ILLEGAL’. If switches are set to 99 in a redundant chassis pair, the display scrolls ‘FAULT:
ADDRESS SWITCHES = 99, ILLEGAL IN REDUNDANT SYSTEM’.
(2) ControlLogix redundancy systems only.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 45
Appendix A 1756 ControlNet Status Indicators
Network Channel Status Indicators
Table 5 - Network Channel Status Indicators A and B
Status
Off
Steady red
Alternating red/green
Alternating red/off
Description
There is no power.
The module has faulted.
Cycle power to the module. If the fault persists, contact your Rockwell Automation representative or distributor.
The module is undergoing a self-test.
A node was configured incorrectly, or a duplicate ControlNet node address exists.
Check the node address and other ControlNet module configuration parameters.
Table 6 - Network Channel Status Indicators A or B
Status
Off
Steady green
Flashing green/off
Flashing red/off
Flashing red/green
Description
A channel has been disabled.
Program the network for redundant media, if necessary.
Normal operation is occurring.
Temporary network errors exist.
Check media for broken cables, loose connectors, and missing terminators.
If the condition persists, see the ControlNet Coax Media Planning and Installation Guide, publication
CNET-IN002 .
The node is not configured to go online.
Make sure the network keeper is present and working, and that the selected address is less than or equal to the UMAX
(1)
.
Media has faulted.
Check media for broken cables, loose connectors, and missing terminators.
If the condition persists, see the ControlNet Coax Media Planning and Installation Guide, publication
CNET-IN002 .
No other nodes are present on the network.
Add other nodes to the network.
An incorrect node address exists.
Change the node address so that it is less than or equal to the UMAX
1784-PCIC and 1784-PCICS cards in RSLinx software.
The ControlNet network was configured incorrectly.
Reconfigure the ControlNet network so that the UMAX
is greater than or equal to the node address.
(1) UMAX is the highest node address on a ControlNet network that can transmit data.
46 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
Appendix
B
1768 ControlNet Module Status Indicators
Topic
1768-CNB and 1768-CNBR ControlNet Modules
Page
The 1768 ControlNet communication modules support these status indicators.
Status Indicator
OK status indicator
Description
Indicates the module’s current state.
Network channel status indicators Indicates the status of network channels A and B.
Status Display
OK Status Indicator
Network Channel
Status Indicators
31657-M
1768-CNB and 1768-CNBR
ControlNet Modules
This section provides the following information about status indicators:
•
To understand the OK status indicator and display messages, refer to
Table 7 on page 48 .
•
For information about viewing the network channel status indicators individually, refer to Table 8 on page 49 .
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 47
Appendix B 1768 ControlNet Module Status Indicators
Table 7 - OK Status Indicator and Display
Status Display
Off None
Steady red
Flashing red
Steady green
Flashing green
Msg scrolls
BPA# ERR
BPRX ERR
BPIC ERR
CNIC ERR
DUPL NODE
RACK ERR
BOOT
ROM UPDT
SNGL KPR!
OK
INIT
BW > MAX
SW ERR
CNFG ERR
NET ERR
OK Status Indicator and Display
Description
The module is not communicating due to a power supply fault or internal fault.
Do any of the following:
• Check the power supply.
• Check the cable connectors.
• Make sure the module is firmly seated in the chassis.
• Replace the module if the indicator remains off.
The module’s network address is set to 00, an invalid ControlNet network address.
If switches are set to 00, the display scrolls FAULT: ADDRESS SWITCHES = 00, ILLEGAL.
Remove the module from the chassis, and set the network address to a valid value. For more information, refer to
The module detected a different slot address from that latched in when you cycled power. Excessive noise on the backplane causes this error.
Replace the chassis or module.
There are too many CRC errors being generated by the multicast backplane receiver, so the backplane multicast receivers have been shut off.
Replace the module.
There is a hardware fault within the module.
Replace the module.
The module’s network address is the same as another module’s on the link.
Remove the module from the chassis, and set the network address to a unique value. For more information, refer to
The module cannot read backplane EEPROM, or the rack/slot address is incorrect.
Replace the chassis.
The module has invalid firmware.
Update the module’s firmware with ControlFLASH software.
An update is in progress.
The module detected that it has been connected to a ControlNet single-keeper network, version 1.5.
Update the module’s firmware at MAC ID 01 and reschedule the network.
Normal operation is occurring.
The module is initializing.
The module is receiving too much network traffic and connections are timing out. The network bandwidth has been exceeded.
If this happens frequently, add another 1768-CNB or 1768-CNBR module and split the traffic between them.
The node address switch changed after cycling power.
We recommend that you either return switches to their original settings or replace the module as this could indicate a hardware anomaly.
There is a ControlNet network configuration error.
Recheck the configuration.
There is a network cabling error or there are no other active nodes on the network.
Recheck your network cabling and make sure another node on the network is active
(online).
48 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
1768 ControlNet Module Status Indicators Appendix B
Network Channel Status Indicators
The ControlNet network channel-status indicators appear in one of these states:
•
Steady—The indicator is on continuously in the defined state.
• Alternating—The two indicators alternate between the two defined states at the same time (applies to both indicators viewed together). The two indicators are always in opposite states, out of phase.
• Flashing—The indicator alternates between the two defined states (applies to each indicator viewed independent of the other). If both indicators are flashing, they must flash together, in phase.
Table 8 - Network Channel Status Indicators A or B
Status
Off
Steady red
Alternating red/green
Alternating red/off
Off
Steady green
Flashing green/off
Flashing red/off
Flashing red/green
Description
There is no power.
The module has faulted.
Cycle power to the module. If the fault persists, contact your Rockwell Automation representative or distributor.
The module is undergoing a self-test.
A node was configured incorrectly, or a duplicate ControlNet node address exists.
Check the node address and other ControlNet module configuration parameters.
A channel has been disabled.
Program the network for redundant media, if necessary.
Normal operation is occurring.
Temporary network errors exist.
The node is not configured to go online.
Make sure the network keeper is present and working, and that the selected address is less than or equal to the UMAX
(1)
.
Media has faulted.
Check media for broken cables, loose connectors, and missing terminators.
If the condition persists, see the ControlNet Coax Media Planning and Installation Guide, publication
CNET-IN002 .
No other nodes are present on the network.
Add other nodes to the network.
The ControlNet network was configured incorrectly.
Cycle power or reset the module. If the fault persists, contact your Rockwell Automation representative or distributor.
(1) UMAX is the highest node address on a ControlNet network that can transmit data.
Rockwell Automation Publication CNET-IN005A-EN-P - May 2011 49
Appendix B 1768 ControlNet Module Status Indicators
Notes:
50 Rockwell Automation Publication CNET-IN005A-EN-P - May 2011
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