{"product_id":"allen-bradley-1756-dnb-devicenet-scanner-module","title":"Allen-Bradley 1756-DNB ControlLogix DeviceNet Scanner Module","description":"\u003cp\u003eThe Allen-Bradley 1756-DNB is a specialized communication interface module designed for the ControlLogix platform, functioning as a bridge and scanner for DeviceNet network architectures. It enables seamless data exchange and control between a ControlLogix processor and a wide array of distributed field devices, including actuators, motor starters, sensors, and variable frequency drives.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eServes as a high-performance DeviceNet scanner for ControlLogix chassis integration.\u003c\/li\u003e\n\u003cli\u003eSupports a network capacity of up to 64 nodes with configurable addresses from 00 to 63.\u003c\/li\u003e\n\u003cli\u003eProvides selectable communication baud rates of 125 Kbps, 250 Kbps, and 500 Kbps.\u003c\/li\u003e\n\u003cli\u003eIntegrated diagnostic capabilities for real-time network health and status monitoring.\u003c\/li\u003e\n\u003cli\u003eBackplane-powered design simplifies integration within standard ControlLogix rack systems.\u003c\/li\u003e\n\u003cli\u003eSupports Automatic Device Replacement (ADR) functionality for streamlined maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomotive Manufacturing:\u003c\/strong\u003e Integration of weld cells, assembly sensors, and conveyor logic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil and Gas:\u003c\/strong\u003e Communication with remote valve manifolds, field instruments, and telemetry systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater and Wastewater:\u003c\/strong\u003e Interfacing with flow meters, pump controllers, and remote processing instrumentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLogistics:\u003c\/strong\u003e Management of sortation systems, AGV routing, and industrial conveyor networks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1756-DNB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5.1V)\u003c\/td\u003e\n\u003ctd\u003e350 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (24V)\u003c\/td\u003e\n\u003ctd\u003e210 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Power Dissipation\u003c\/td\u003e\n\u003ctd\u003e5.8 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e19.8 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e30V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Node Capacity\u003c\/td\u003e\n\u003ctd\u003e64\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandling:\u003c\/strong\u003e This is an electrostatic-sensitive device. Ensure proper ESD grounding procedures are followed when handling the module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsertion:\u003c\/strong\u003e Always power down the ControlLogix chassis before inserting or removing the module to prevent electrical arcing on the backplane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e The DeviceNet trunk line requires two 121-ohm termination resistors at the extreme ends of the network.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e To prevent ground loops, the network shield should be connected to earth ground at only one physical point, typically at the DeviceNet power supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot-Swapping:\u003c\/strong\u003e While the ControlLogix backplane supports hot-swapping, the DeviceNet plug must be disconnected before removing the module to avoid injecting voltage transients into the network.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eWhat is the primary function of the 1756-DNB?\u003c\/h3\u003e\u003cp\u003eThe 1756-DNB acts as a scanner and bridge, allowing a ControlLogix controller to manage I\/O and parameters from DeviceNet-compatible field devices across a plant-floor network.\u003c\/p\u003e\u003ch3\u003eCan this module operate in a remote chassis?\u003c\/h3\u003e\u003cp\u003eYes, the module can reside in a remote ControlLogix rack without a local controller, provided a bridging module (such as an EtherNet\/IP or ControlNet module) is present to facilitate communication with the master controller.\u003c\/p\u003e\u003ch3\u003eHow is the baud rate configured?\u003c\/h3\u003e\u003cp\u003eThe module supports Autobaud detection, or it can be manually configured via the front-panel interface or through the RSNetWorx for DeviceNet software configuration utility.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":44012740640858,"sku":"1756-DNB","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/wm_1_e52048b9-63da-4fef-9292-e933ef59f496.jpg?v=1788580678","url":"https:\/\/www.spareoil.com\/products\/allen-bradley-1756-dnb-devicenet-scanner-module","provider":"SpareOil Automation","version":"1.0","type":"link"}