{"product_id":"allen-bradley-1756-dnb-controllogix-devicenet-communication-bridge-module","title":"Allen-Bradley 1756-DNB ControlLogix DeviceNet Communication Bridge Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-DNB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as the primary communication bridge between a ControlLogix chassis and a DeviceNet network. This scanner module enables a ControlLogix processor to control I\/O, configure devices, and collect data from up to 64 DeviceNet nodes. It manages complex messaging and deterministic data transfers across the factory floor, acting as a vital gateway for motor starters, sensors, and actuators. We supply this module in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econdition, ensuring total network stability and long-term compatibility for your integrated architecture.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNetwork Protocol:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDeviceNet\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMax. Number of Nodes:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e64 Nodes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCommunication Rates:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e125 Kbps (500m), 250 Kbps (250m), 500 Kbps (100m)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBackplane Current (5.1V DC):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e400 mA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBackplane Current (24V DC):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0 mA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDeviceNet Voltage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e11–25V DC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDeviceNet Current Draw (24V DC):\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e60 mA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModule Power Dissipation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e3.5 Watts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUSB Interface:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1 Port (12 Mbps speed)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSlot Width:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1 Slot\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0.56 lbs (0.26 kg)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe 1756-DNB streamlines industrial networking through specialized bridging and diagnostic features:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Density Node Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eA single 1756-DNB manages up to 64 independent nodes. This high capacity allows engineers to centralize control of extensive sensor arrays and motor control centers within a single ControlLogix rack, reducing the total hardware footprint.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDeterministic Data Bridging:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module executes a \"producer\/consumer\" model for data exchange. This ensures that time-critical control data receives priority over the network, maintaining the precise synchronization required for high-speed conveyor systems and assembly lines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSimplified Field Commissioning:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe integrated 12 Mbps USB port provides a direct point of access for system configuration. Engineers connect their workstations directly to the module to upload or download network schedules via RSNetWorx for DeviceNet, bypassing the need for separate network adapters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEfficient Energy Profile:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module draws zero current from the chassis 24V supply, utilizing only the 5.1V backplane power. This reduces the load on the primary chassis power supply and minimizes thermal dissipation within the enclosure, extending the life of adjacent modules.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I configure the baud rate for the 1756-DNB?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module supports 125, 250, and 500 Kbps. You typically set the baud rate using RSNetWorx for DeviceNet software. Ensure all nodes on the network match the scanner's rate to prevent communication time-outs and network errors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module require external power for the DeviceNet port?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. DeviceNet requires an external 24V DC power supply (connected via the linear bus) to power the physical layer of the network and the communication circuitry of the 1756-DNB port. The module draws approximately 60 mA from this external source.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a Brand New original product?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. We guarantee this 1756-DNB is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal stock. In high-speed networking, using brand-new modules is essential to ensure the internal transceivers and USB interface meet original factory specifications for signal integrity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I install multiple 1756-DNB modules in one chassis?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. You can install multiple scanners in a single ControlLogix chassis to manage separate DeviceNet segments. Each module functions independently and consumes only one slot.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53376724205752,"sku":"1756-DNB","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1756-DNB.jpg?v=1776759320","url":"https:\/\/www.globalpetroparts.com\/products\/allen-bradley-1756-dnb-controllogix-devicenet-communication-bridge-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}