1756-CNBR - In Stock | Allen Bradley PLC ControlLogix

1756-CNBR

Rated 4.9 with 16 reviews

DO Supply is NOT an authorized distributor for this manufacturer and therefore the manufacturer’s warranty does not apply. Product comes with DO Supply's 1-year warranty

Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.


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1756-CNBR

Revisions: Ser A Ser B Ser C Ser D Ser E 
Description: The Allen-Bradley 1756-CNBR is a ControlLogix communication module. This module is a ControlNet Bridge communication module that features Two (2) ControlNet ports supporting simplex and redundant ControlNet network. This module also has 1 Network Access Protocol (NAP) having a physical interface of RJ-45 8-pin with shield. It supports communication rate of 5Mbps and 40-48 ControlNet logical connections.
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Description: The Allen-Bradley 1756-CNBR is a ControlLogix communication module. This module is a ControlNet Bridge communication module that features Two (2) ControlNet ports supporting simplex and redundant ControlNet network. This module also has 1 Network Access Protocol (NAP) having a physical interface of RJ-45 8-pin with shield. It supports communication rate of 5Mbps and 40-48 ControlNet logical connections.

DO Supply is NOT an authorized distributor for this manufacturer and therefore the manufacturer’s warranty does not apply. Product comes with DO Supply's 1-year warranty

Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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Revisions: Ser A Ser B Ser C Ser D Ser E 

Warranty: 1 year DO Supply Warranty Included
Shipping: Worldwide shipping via UPS, DHL, and TNT
Repairs: We offer repair service for the 1756-CNBR.
Exchange: Exchange credit for your defective unit available.
Conditions: We sell preowned surplus and refurbished parts.

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Rated 4.9 with 16 reviews

    Technical Specifications for 1756-CNBR

ManufacturerRockwell Automation
Power supply, redundant1756-PA75R, 1756-PB75R, 1756-PSCA2
Power supply, standard1756-PA72/C, 1756-PA75/B, 1756-PB72/C, 1756-PB75/B, 1756-PC75/B, 1756-PH75/B
Chassis1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
Operating Temperature32-140 Fahrenheit (0-60 Celsius)
Dimensions5.51 x 4.41 x 5.71 inches
Communication Cable1786-RG6 quad shield RG6 coaxial cable
EnclosureOpen Type
Power Dissipation (Max)5.5 Watts
Isolation Voltage30 Volts Continuous
Backplane Current (24 Volts DC)1.7 milliamps
Backplane Current (5.1 Volts DC)970 milliamps
No. of PortsTwo (2) ControlNet ports
BrandAllen-Bradley
Part Number/Catalog No.1756-CNBR
SeriesControlLogix
Module TypeControlNet communication module
LocationChassis
Current Draw at 5.1 Volts DC970 Miliamperes
Current Draw at 24 Volts DC1.7 Miliamperes
ControlNet Rate of Communication5 Mbps
Logix Communication Connections40-48
Max Connections Supported64
Max Number of Nodes99
Slot Width1
Weight0.64 lbs (0.293 kg)
UPC10612598174086
ManufacturerRockwell Automation
Power supply, redundant1756-PA75R, 1756-PB75R, 1756-PSCA2
Power supply, standard1756-PA72/C, 1756-PA75/B, 1756-PB72/C, 1756-PB75/B, 1756-PC75/B, 1756-PH75/B
Chassis1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
Operating Temperature32-140 Fahrenheit (0-60 Celsius)
Dimensions5.51 x 4.41 x 5.71 inches
Communication Cable1786-RG6 quad shield RG6 coaxial cable
EnclosureOpen Type
Power Dissipation (Max)5.5 Watts
Isolation Voltage30 Volts Continuous
Backplane Current (24 Volts DC)1.7 milliamps
Backplane Current (5.1 Volts DC)970 milliamps
No. of PortsTwo (2) ControlNet ports
BrandAllen-Bradley
Part Number/Catalog No.1756-CNBR
SeriesControlLogix
Module TypeControlNet communication module
LocationChassis
Current Draw at 5.1 Volts DC970 Miliamperes
Current Draw at 24 Volts DC1.7 Miliamperes
ControlNet Rate of Communication5 Mbps
Logix Communication Connections40-48
Max Connections Supported64
Max Number of Nodes99
Slot Width1
Weight0.64 lbs (0.293 kg)
UPC10612598174086
s

About 1756-CNBR

The Allen-Bradley 1756-CNBR, or ControlNet Bridge Redundancy, is an interface module used for communicating within a ControlNet Network. It is the same as the 1756-CNB but the biggest difference is that the 1756-CNBR has an additional ControlNet port, which will support redundant media. This module has 2 ControlNet BNC port while the 1756-CNB only has one, although both of them have 1 ControlNet RJ45 port.

Like the non-redundant module, the 1756-CNBR also controls scheduled data in conjunction to the Logix5550 Controller and bridges unscheduled data between the ControlLogix backplane and the ControlNet Network.

To prevent communication loss when a tap or trunkline is disconnected, a redundant ControlNet media can be used. For that connection, the only module you can use is the 1756-CNBR.

The technical specifications of this module are also similar to the non-redundant module. It can also handle up to 64 bidirectional scheduled and unscheduled connections with other ControlNet devices. Aside from that, up to 20 buffers for unconnected messages can be supported by the module. Also, this is the module needed if your application has 40 to 48 Logix communication connections per communication module and the communication rate is 5 megabytes per second. It also has 99 nodes available.

The current draw for the 1756-CNBR is 970 milliamperes at 5.1 Volts DC and 1.7 milliamperes at 24 Volts DC.

Before making your connection, make sure to check the tap drop cable for the label indicating the attached segment. This is to make sure that the tap connections will not be accidentally reversed. If not, these reversals will require troubleshooting and the status will be displayed incorrectly.

The Allen-Bradley 1756-CNBR is a ControlNet Bridge Module. This module is part of the ControlLogix product family that is used to interface a ControlLogix controller or implement Distributed I/O architecture via the high-speed ControlNet network. This module features Two (2) ControlNet ports, enabling connection to standard (simplex) and redundant ControlNet networks.

The 1756-CNBR supports transmission rate of 5Mbps, which is the standard transmission rate of the ControlNet protocol. It uses a quad shield RG-6 coaxial cable as trunk cable and established connection to the trunk cable with the use of ControlNet taps. This module supports 40-48 Logical communication connections and a maximum of 64 connections. The maximum number of nodes supported by the 1756-CNBR is 99 nodes.

The 1756-CNBR may be installed along the ControlLogix processor as a local communication module or to any distributed I/O rack as the head communication module. It is compatible with a variety of ControlLogix rack such as 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17. It may be installed to any available slot and only requires single slot in the chassis. It mat also be used with standard and redundant power supplies such as 1756-PA72/C, 1756-PA75/B, 1756-PB72/C, 1756-PB75/B, 1756-PC75/B, 1756-PH75/B and 1756-PA75R, 1756-PB75R, 1756-PSCA2, respectively.

The 1756-CNBR has additional One (1) Network Access Port (NAP) for local programming which is an 8-pin RJ45 physical port.

The 1756-CNBR communication module is backplane powered and draws 970 mA at 5.1VDC and 1.7 mA at 24VDC. It has a power dissipation of 5.1 Watts and Thermal dissipation of 17.4 BTU/hr.

FAQ for 1756-CNBR

What is the communication cable used by the 1756-CNBR?


The 1756-CNBR uses 1786-RG6 quad shield RG6 coaxial cable.

What is the communication rate supported by the 1756-CNBR?


The 1756-CNBR supports 5Mbps communication rate.

What is the maximum number of nodes supported by the 1756-CNBR?


The 1756-CNBR supports up to 99 nodes.

Technical Description of 1756-CNBR

The Allen-Bradley ControlLogix 1756-CNBR is a Redundant Bridge Module with 5.1 Watts, 5 Mbps, and 40-48 Logix Communication Connections.

Repair Services for 1756-CNBR

Type Lead Time Price Action
Repair Service 2-4 weeks $257cartAdd to Cart
Our highly skilled technicians can repair your ControlLogix 1756-CNBR. All our repairs come with a 1 Year Warranty. Please contact us for additional information about our repair process.

Revisions for 1756-CNBR

Please refer to the manual for more information about the 1756-CNBR such as the wiring diagrams, data sheets and migration or obsolescence details.

Revision Part # Also Known as Availability
1756-CNBR Ser A
1756-CNBR/A, Series A, Rev A Request Quote
1756-CNBR Ser B
1756-CNBR/B, Series B, Rev B Request Quote
1756-CNBR Ser C
1756-CNBR/C, Series C, Rev C Request Quote
1756-CNBR Ser D
1756-CNBR/D, Series D, Rev D Request Quote
1756-CNBR Ser E
1756-CNBR/E, Series E, Rev E Request Quote
Common misspellings:
  • l756-CNBR
  • 1756-CN8R
  • 1756CNBR

Reviews for 1756-CNBR

Internal Review

"The 1756-CNBR is a ControlNet communication module that is compatible for use with the 1756 ControlLogix platform. Compared to the 1756-CNB that supports standard ControlNet architecture only, the 1756-CNBR is primarily used in redundant ControlNet architecture. " -DO Supply Tech

Dimensions For 1756-CNBR

Size
Input Type
Panel Cutout Height in mm
Panel Cutout Width in mm
Terminal Height in mm
Terminal Width in mm
Terminal Overall Depth in mm
Terminal Mounted Depth in mm

Dimensions For 1756-CNBR

Resolutions For 1756-CNBR

About

Technical Specifications for 1756-CNBR

ManufacturerRockwell Automation
Power supply, redundant1756-PA75R, 1756-PB75R, 1756-PSCA2
Power supply, standard1756-PA72/C, 1756-PA75/B, 1756-PB72/C, 1756-PB75/B, 1756-PC75/B, 1756-PH75/B
Chassis1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
Operating Temperature32-140 Fahrenheit (0-60 Celsius)
Dimensions5.51 x 4.41 x 5.71 inches
Communication Cable1786-RG6 quad shield RG6 coaxial cable
EnclosureOpen Type
Power Dissipation (Max)5.5 Watts
Isolation Voltage30 Volts Continuous
Backplane Current (24 Volts DC)1.7 milliamps
Backplane Current (5.1 Volts DC)970 milliamps
No. of PortsTwo (2) ControlNet ports
BrandAllen-Bradley
Part Number/Catalog No.1756-CNBR
SeriesControlLogix
Module TypeControlNet communication module
LocationChassis
Current Draw at 5.1 Volts DC970 Miliamperes
Current Draw at 24 Volts DC1.7 Miliamperes
ControlNet Rate of Communication5 Mbps
Logix Communication Connections40-48
Max Connections Supported64
Max Number of Nodes99
Slot Width1
Weight0.64 lbs (0.293 kg)
UPC10612598174086
ManufacturerRockwell Automation
Power supply, redundant1756-PA75R, 1756-PB75R, 1756-PSCA2
Power supply, standard1756-PA72/C, 1756-PA75/B, 1756-PB72/C, 1756-PB75/B, 1756-PC75/B, 1756-PH75/B
Chassis1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
Operating Temperature32-140 Fahrenheit (0-60 Celsius)
Dimensions5.51 x 4.41 x 5.71 inches
Communication Cable1786-RG6 quad shield RG6 coaxial cable
EnclosureOpen Type
Power Dissipation (Max)5.5 Watts
Isolation Voltage30 Volts Continuous
Backplane Current (24 Volts DC)1.7 milliamps
Backplane Current (5.1 Volts DC)970 milliamps
No. of PortsTwo (2) ControlNet ports
BrandAllen-Bradley
Part Number/Catalog No.1756-CNBR
SeriesControlLogix
Module TypeControlNet communication module
LocationChassis
Current Draw at 5.1 Volts DC970 Miliamperes
Current Draw at 24 Volts DC1.7 Miliamperes
ControlNet Rate of Communication5 Mbps
Logix Communication Connections40-48
Max Connections Supported64
Max Number of Nodes99
Slot Width1
Weight0.64 lbs (0.293 kg)
UPC10612598174086

About 1756-CNBR

The Allen-Bradley 1756-CNBR, or ControlNet Bridge Redundancy, is an interface module used for communicating within a ControlNet Network. It is the same as the 1756-CNB but the biggest difference is that the 1756-CNBR has an additional ControlNet port, which will support redundant media. This module has 2 ControlNet BNC port while the 1756-CNB only has one, although both of them have 1 ControlNet RJ45 port.

Like the non-redundant module, the 1756-CNBR also controls scheduled data in conjunction to the Logix5550 Controller and bridges unscheduled data between the ControlLogix backplane and the ControlNet Network.

To prevent communication loss when a tap or trunkline is disconnected, a redundant ControlNet media can be used. For that connection, the only module you can use is the 1756-CNBR.

The technical specifications of this module are also similar to the non-redundant module. It can also handle up to 64 bidirectional scheduled and unscheduled connections with other ControlNet devices. Aside from that, up to 20 buffers for unconnected messages can be supported by the module. Also, this is the module needed if your application has 40 to 48 Logix communication connections per communication module and the communication rate is 5 megabytes per second. It also has 99 nodes available.

The current draw for the 1756-CNBR is 970 milliamperes at 5.1 Volts DC and 1.7 milliamperes at 24 Volts DC.

Before making your connection, make sure to check the tap drop cable for the label indicating the attached segment. This is to make sure that the tap connections will not be accidentally reversed. If not, these reversals will require troubleshooting and the status will be displayed incorrectly.

The Allen-Bradley 1756-CNBR is a ControlNet Bridge Module. This module is part of the ControlLogix product family that is used to interface a ControlLogix controller or implement Distributed I/O architecture via the high-speed ControlNet network. This module features Two (2) ControlNet ports, enabling connection to standard (simplex) and redundant ControlNet networks.

The 1756-CNBR supports transmission rate of 5Mbps, which is the standard transmission rate of the ControlNet protocol. It uses a quad shield RG-6 coaxial cable as trunk cable and established connection to the trunk cable with the use of ControlNet taps. This module supports 40-48 Logical communication connections and a maximum of 64 connections. The maximum number of nodes supported by the 1756-CNBR is 99 nodes.

The 1756-CNBR may be installed along the ControlLogix processor as a local communication module or to any distributed I/O rack as the head communication module. It is compatible with a variety of ControlLogix rack such as 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17. It may be installed to any available slot and only requires single slot in the chassis. It mat also be used with standard and redundant power supplies such as 1756-PA72/C, 1756-PA75/B, 1756-PB72/C, 1756-PB75/B, 1756-PC75/B, 1756-PH75/B and 1756-PA75R, 1756-PB75R, 1756-PSCA2, respectively.

The 1756-CNBR has additional One (1) Network Access Port (NAP) for local programming which is an 8-pin RJ45 physical port.

The 1756-CNBR communication module is backplane powered and draws 970 mA at 5.1VDC and 1.7 mA at 24VDC. It has a power dissipation of 5.1 Watts and Thermal dissipation of 17.4 BTU/hr.

FAQ for 1756-CNBR

What is the communication cable used by the 1756-CNBR?


The 1756-CNBR uses 1786-RG6 quad shield RG6 coaxial cable.

What is the communication rate supported by the 1756-CNBR?


The 1756-CNBR supports 5Mbps communication rate.

What is the maximum number of nodes supported by the 1756-CNBR?


The 1756-CNBR supports up to 99 nodes.

Technical Description of 1756-CNBR

The Allen-Bradley ControlLogix 1756-CNBR is a Redundant Bridge Module with 5.1 Watts, 5 Mbps, and 40-48 Logix Communication Connections.
Repairs
Type Lead Time Price Action
Repair Service 2-4 weeks $257cartAdd to Cart
Our highly skilled technicians can repair your ControlLogix 1756-CNBR. All our repairs come with a 1 Year Warranty. Please contact us for additional information about our repair process.
Type Lead Time Price Action
Repair Service 2-4 weeks $257cartAdd to Cart
Our highly skilled technicians can repair your ControlLogix 1756-CNBR. All our repairs come with a 1 Year Warranty. Please contact us for additional information about our repair process.
Revisions

Please refer to the manual for more information about the 1756-CNBR such as the wiring diagrams, data sheets and migration or obsolescence details.

Revision Part # Also Known as Availability
1756-CNBR Ser A
1756-CNBR/A, Series A, Rev A Request Quote
1756-CNBR Ser B
1756-CNBR/B, Series B, Rev B Request Quote
1756-CNBR Ser C
1756-CNBR/C, Series C, Rev C Request Quote
1756-CNBR Ser D
1756-CNBR/D, Series D, Rev D Request Quote
1756-CNBR Ser E
1756-CNBR/E, Series E, Rev E Request Quote

Common misspellings:
  • l756-CNBR
  • 1756-CN8R
  • 1756CNBR
PDF
Reviews

Reviews for 1756-CNBR

Internal Review

"The 1756-CNBR is a ControlNet communication module that is compatible for use with the 1756 ControlLogix platform. Compared to the 1756-CNB that supports standard ControlNet architecture only, the 1756-CNBR is primarily used in redundant ControlNet architecture. " -DO Supply Tech