1756-DNB | Allen-Bradley ControlLogix DeviceNet Bridge/Scanner Module
1756-DNB | Allen-Bradley ControlLogix DeviceNet Bridge/Scanner Module
1756-DNB | Allen-Bradley ControlLogix DeviceNet Bridge/Scanner Module
1756-DNB | Allen-Bradley ControlLogix DeviceNet Bridge/Scanner Module
1756-DNB | Allen-Bradley ControlLogix DeviceNet Bridge/Scanner Module
1756-DNB | Allen-Bradley ControlLogix DeviceNet Bridge/Scanner Module
    1756-DNB | Allen-Bradley ControlLogix DeviceNet Bridge/Scanner Module
    1756-DNB | Allen-Bradley ControlLogix DeviceNet Bridge/Scanner Module
1756-DNB | Allen-Bradley ControlLogix DeviceNet Bridge/Scanner Module
1756-DNB | Allen-Bradley ControlLogix DeviceNet Bridge/Scanner Module

1756-DNB | Allen-Bradley ControlLogix DeviceNet Bridge/Scanner Module

Part #: 1756-DNB Manufactured by: Allen-Bradley
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$182.00
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$182.00
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Condition: New-Surplus Original Box
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Product Overview
The 1756-DNB DeviceNet scanner module provides seamless integration between DeviceNet networks and ControlLogix controller...  Read more
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Product Description P/N: 1756-DNB

Description / Specifications

Description 

The Allen-Bradley 1756-DNB is a ControlLogix DeviceNet scanner module designed for connecting DeviceNet networks to a ControlLogix system. It supports DeviceNet communication rates of 125, 250, or 500 Kbps and provides reliable data exchange between controllers and DeviceNet devices.

 

 

Technical Specifications 

Brand Allen-Bradley
Series ControlLogix
Part Number 1756-DNB
Manufacturer Rockwell Automation
Module Type Scanner Module
DeviceNet Communication Rates 125, 250, or 500 kilobites per second
Location ControlLogix Chassis (any slot)
Backplane Current (5Volts) 580 milliamps
Backplane Current (24Volts) 3 milliamps
Power Dissipation (Max) 5.8 Watts
Thermal Dissipation 19.8 BTU per hour
DeviceNet Current 11-25 Volts DC
Insulation Voltage 30 Volts Continuous
Operating Temperature 0-60 Celsius (32-140 Fahrenheit)

  

 

Information About 1756-DNB

The 1756-DNB is part of the Allen-Bradley ControlLogix family, engineered to function as a bridge between DeviceNet nodes and the controller. It supports up to 64 DeviceNet nodes with addresses from 00 to 63, enabling large-scale device connectivity. This module communicates at selectable baud rates of 125, 250, and 500 Kbps to adapt to different network demands. It consumes 580 mA at 5 VDC and 3 mA at 24 VDC from the backplane, with a maximum power dissipation of 5.8 W. The module provides continuous insulation voltage of 30 V, ensuring reliable protection, and it operates in a temperature range of 0–60 °C. The 1756-DNB is installed in any slot of a ControlLogix chassis and is supported only by Logix5550 controllers, making it a key component in integrating DeviceNet into Logix-based control systems.

Key Features:

  • Communication Rates: Supports DeviceNet speeds of 125, 250, or 500 Kbps, ensuring adaptability for various network designs.
  • Node Capacity: Handles up to 64 nodes with address range 00–63, allowing wide device integration.
  • Module Role: Functions as a scanner to collect input data, send output commands, download configuration files, and monitor device status.
  • Controller Compatibility: Specifically designed for use with Logix5550 controllers within the ControlLogix platform.
  • Power Requirements: Draws 580 mA at 5 VDC and 3 mA at 24 VDC, with a maximum dissipation of 5.8 W for efficient operation.
  • Thermal Ratings: Generates 19.8 BTU/hr, supporting stable thermal performance in industrial environments.
  • Electrical Protection: Rated for 30 V continuous insulation voltage, enhancing system safety.
  • Installation: Mounts in any slot of a ControlLogix chassis, offering flexibility in system layout.

The 1756-DNB delivers the reliability and precision required for bridging DeviceNet devices with ControlLogix controllers in industrial automation.


 

Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

Frequently Asked Questions about 1756-DNB
Question: What is the 1756-DNB?
Date Update:30/05/2025
Answer:

The 1756-DNB is an Allen-Bradley DeviceNet Communication Interface Module designed to connect ControlLogix controllers to a DeviceNet network. This module allows ControlLogix systems to communicate with DeviceNet devices such as sensors, actuators, drives, and remote I/O. It supports DeviceNet communication and integrates seamlessly with Ethernet/IP networks in industrial automation systems.

Question: Where can I find the manual for the 1756-DNB?
Date Update:30/05/2025
Answer:

The manual for the 1756-DNB is available on the Rockwell Automation website under the Product Documentation section. The manual contains detailed installation, wiring, troubleshooting, and programming information. It also provides configuration instructions for integrating the 1756-DNB into your ControlLogix system and setting up communication with DeviceNet devices.

Question: How do I wire the 1756-DNB module?
Date Update:30/05/2025
Answer:

Wiring the 1756-DNB involves connecting it to a DeviceNet network and a ControlLogix system. Here’s the general wiring process:

  • Power Supply Wiring:
    Connect the 24V DC power supply to the +24V DC and 0V (ground) terminals on the 1756-DNB.
  • DeviceNet Wiring:
    Connect the DeviceNet cable to the DeviceNet port on the 1756-DNB module.
    The DeviceNet network must be terminated at both ends, using DeviceNet terminators to ensure proper signal integrity.
  • ControlLogix Connection:
    Insert the 1756-DNB into a slot in the ControlLogix chassis.
    Make sure that the ControlLogix system is properly powered and that the Ethernet/IP network is configured for communication with the 1756-DNB.

Detailed wiring diagrams are provided in the manual, which should be referred to for proper wiring connections.

Question: What are the fault codes on the 1756-DNB, and what do they mean?
Date Update:30/05/2025
Answer:

The 1756-DNB module uses LED indicators to communicate fault and status information. Here are some common fault codes and their meanings:

  • Green LED (Network Status): Indicates normal communication with the DeviceNet network.
  • Red LED (Fault): Indicates a fault condition, which could be:
    Network communication failure: The module is unable to establish or maintain communication with the DeviceNet network.
    Power issues: The module is not receiving the correct 24V DC power.
    DeviceNet configuration error: The network may have improper device configuration or incompatible devices.
  • Amber LED (Module Status): Indicates the module is in standby mode or experiencing a non-critical issue.

Diagnostic codes and solutions can be found in the manual, which provides detailed steps for troubleshooting each error condition.

Question: What devices can the 1756-DNB communicate with?
Date Update:30/05/2025
Answer:

The 1756-DNB module allows communication with any DeviceNet-compatible devices. These devices can include:

  • I/O modules (e.g., digital and analog I/O)
  • Motor drives (e.g., PowerFlex drives)
  • HMIs and panel controllers
  • Sensors, actuators, and remote I/O devices
  • Safety devices (e.g., emergency stop buttons, light curtains)

DeviceNet is widely used for connecting field devices to industrial control systems, and the 1756-DNB enables seamless integration into the ControlLogix system.

IQElectro is not an authorized distributor.
QElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Allen-Bradley 1756-DNB is a ControlLogix DeviceNet scanner module designed for connecting DeviceNet networks to a ControlLogix system. It supports DeviceNet communication rates of 125, 250, or 500 Kbps and provides reliable data exchange between controllers and DeviceNet devices.

 

 

Technical Specifications 

Brand Allen-Bradley
Series ControlLogix
Part Number 1756-DNB
Manufacturer Rockwell Automation
Module Type Scanner Module
DeviceNet Communication Rates 125, 250, or 500 kilobites per second
Location ControlLogix Chassis (any slot)
Backplane Current (5Volts) 580 milliamps
Backplane Current (24Volts) 3 milliamps
Power Dissipation (Max) 5.8 Watts
Thermal Dissipation 19.8 BTU per hour
DeviceNet Current 11-25 Volts DC
Insulation Voltage 30 Volts Continuous
Operating Temperature 0-60 Celsius (32-140 Fahrenheit)

  

 

Information About 1756-DNB

The 1756-DNB is part of the Allen-Bradley ControlLogix family, engineered to function as a bridge between DeviceNet nodes and the controller. It supports up to 64 DeviceNet nodes with addresses from 00 to 63, enabling large-scale device connectivity. This module communicates at selectable baud rates of 125, 250, and 500 Kbps to adapt to different network demands. It consumes 580 mA at 5 VDC and 3 mA at 24 VDC from the backplane, with a maximum power dissipation of 5.8 W. The module provides continuous insulation voltage of 30 V, ensuring reliable protection, and it operates in a temperature range of 0–60 °C. The 1756-DNB is installed in any slot of a ControlLogix chassis and is supported only by Logix5550 controllers, making it a key component in integrating DeviceNet into Logix-based control systems.

Key Features:

  • Communication Rates: Supports DeviceNet speeds of 125, 250, or 500 Kbps, ensuring adaptability for various network designs.
  • Node Capacity: Handles up to 64 nodes with address range 00–63, allowing wide device integration.
  • Module Role: Functions as a scanner to collect input data, send output commands, download configuration files, and monitor device status.
  • Controller Compatibility: Specifically designed for use with Logix5550 controllers within the ControlLogix platform.
  • Power Requirements: Draws 580 mA at 5 VDC and 3 mA at 24 VDC, with a maximum dissipation of 5.8 W for efficient operation.
  • Thermal Ratings: Generates 19.8 BTU/hr, supporting stable thermal performance in industrial environments.
  • Electrical Protection: Rated for 30 V continuous insulation voltage, enhancing system safety.
  • Installation: Mounts in any slot of a ControlLogix chassis, offering flexibility in system layout.

The 1756-DNB delivers the reliability and precision required for bridging DeviceNet devices with ControlLogix controllers in industrial automation.


 

Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

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