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We provide 1 year warranty for all remaining parts.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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Amikon offers a wide range of components, products and services related to industrial automation. We have a large surplus of stocks and are also distributors of new products from a variety of quality manufacturers.
Technical specifications for 1756-DNB
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Product Model1756-DNB
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Spare Model1756DNB
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Product ParametersControlLogix DeviceNet Comms Module
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Tariff Code8537101190
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Country of originUSA
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Place of shipmentXiamen, China
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Estimated Shipping Size3.6x15.2x14.5cm
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ManufacturerAllen-Bradley
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Weight0.25 kg
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SeriesControlLogix
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Backplane current3 -850 mA
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Isolation voltage30V
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North American temp code5.8 Watts
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Thermal dissipation, max19.8 BTU/hr
Description
The Allen Bradley 1756-DNB is a dedicated communication module designed for effective use within the ControlLogix series, specifically integrating with DeviceNet networks.
The module supports up to 64 DeviceNet nodes. Node addresses range from 00 to 63. Node address 63 is set by default. The module supports DeviceNet communication rates of 125 Kbps, 250 Kbps, and 500 Kbps. At 125 Kbps the maximum network distance is 500 meters. At 250 Kbps the maximum distance is 250 meters. At 500 Kbps the maximum distance is 100 meters.
The module supports up to 64 DeviceNet nodes. Node addresses range from 00 to 63. Node address 63 is set by default. The module supports DeviceNet communication rates of 125 Kbps, 250 Kbps, and 500 Kbps. At 125 Kbps the maximum network distance is 500 meters. At 250 Kbps the maximum distance is 250 meters. At 500 Kbps the maximum distance is 100 meters.
Revisions
Revision Part #
Also known as
Alternative Names
1756-DN8
I756-DNB
1756DN8
I756DN8
1756DNB
I756DNB
I756-DN8
Information
Overview
Manuals
Engineering Considerations
Product Applications
Module Configuration
Features:
- DeviceNet scanner for ControlLogix systems
- Supports communication with up to 63 DeviceNet nodes
- Compatible with a wide range of DeviceNet field devices
- Integrated network diagnostics and status monitoring
- Backplane-powered operation
- Suitable for distributed I/O and device communication
The module supports up to 64 DeviceNet nodes. Node addresses range from 00 to 63. Node address 63 is set by default. The module supports DeviceNet communication rates of 125 Kbps, 250 Kbps, and 500 Kbps. At 125 Kbps the maximum network distance is 500 meters. At 250 Kbps the maximum distance is 250 meters. At 500 Kbps the maximum distance is 100 meters.
The 1756-DNB Allen Bradley Communication module may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen Bradley 1756-DNB Communication module Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Power Consumption: The 1756-DNB requires 350 mA at 5.1V DC and 210 mA at 24V DC from the ControlLogix chassis power supply. Ensure your chassis power supply has sufficient capacity to handle this module, especially in highly populated racks.
Series A-D modules are largely obsolete, and series E modules (which require a minimum of firmware V12) operate differently on earlier versions of Logix controllers.
Terminators & Grounding: The trunk line requires exactly two 121-ohm termination resistors (catalog number 1485P1-T) across CAN_H and CAN_L, installed at the furthest extremities of the network. The network shield should only be grounded at a single point (typically at the DeviceNet power supply).
- Automotive Production:Assembly sensors, weld cells & conveyors
- Oil & Gas:Field instruments, valve manifolds & telemetry
- Metals & Mining:Heavy machinery, sorters & high-vibration gear
- Water & Wastewater:Flow meters, pumps & processing instruments
- Warehouse & Fulfillment:Sortation, AGV routing & conveyors
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Node Address & Baud Rate: You can set the node address and data rate using the manual configuration buttons on the front of the module or directly configure them in your software. The 1756-DNB features Autobaud functionality to detect the network speed.
RSLogix 5000 Setup: Open your project, go to the I/O Configuration tree, right-click, select New Module, and add the local or remote 1756-DNB.
Scanlist & Devices: Use RSNetWorx for DeviceNet to map I/O parameters, edit device parameters, and configure Automatic Device Replacement (ADR) if desired.
Technical notes
With a maximum capacity to connect up to 64 nodes, the 1756-DNB supports the expansion of device networks, making it suitable for extensive systems. The module requires 400 mA of current when powered at 5.1V DC, while at 24V DC, it does not draw any current. Notably, when operating within DeviceNet specifications, the module draws 60 mA at 24V DC to maintain functionality.
FAQs
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What is the 1756-DNB？
+The Allen-Bradley 1756-DNB is a ControlLogix DeviceNet Bridge and Scanner module. It allows ControlLogix controllers to communicate with and gather data from distributed DeviceNet field devices -
Can I hot-swap the 1756-DNB module?
+Yes, ControlLogix modules support hot-swapping, but you must remove the DeviceNet plug first. Leaving the DeviceNet cable connected while hot-swapping can send transients into the network and damage other nodes. -
Can I run a 1756-DNB in a chassis without a local CPU?
+Yes. A 1756-DNB can reside in a remote rack without a local controller, provided there is a bridging EtherNet/IP or ControlNet module in that same rack. A master controller in a separate, local chassis can then take ownership of the 1756-DNB across the network routing path. -
What are the power specifications?
+The module has a backplane power dissipation rating of approximately 5.8 Watts.
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