{"product_id":"allen-bradley-1756-cnb-controllogix-controlnet-bridge-communication-module","title":"Allen-Bradley 1756-CNB ControlLogix ControlNet Bridge Communication Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 1756-CNB is a high-performance ControlLogix ControlNet bridge communication module designed to interface a ControlLogix chassis with a ControlNet network. Operating on standard media, this module facilitates reliable, deterministic data exchange across industrial automation architectures using the Common Industrial Protocol (CIP).\u003c\/p\u003e\n\u003cp\u003eEngineered for seamless integration into standard ControlLogix rack environments, the 1756-CNB handles both scheduled I\/O data transfers and unscheduled messaging. It bridges critical control and information data between the ControlLogix backplane and external ControlNet nodes, ensuring synchronized and repeatable communication for complex manufacturing and process control applications.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eProvides high-speed 5 Mbps ControlNet communication rate over standard coaxial media.\u003c\/li\u003e\n  \u003cli\u003eSupports between 40 and 48 Logix communication connections for flexible system configuration.\u003c\/li\u003e\n  \u003cli\u003eBridges control data seamlessly between the ControlLogix backplane and ControlNet network nodes.\u003c\/li\u003e\n  \u003cli\u003eSupports deterministic, repeatable transfers for time-critical I\/O updates and controller-to-controller interlocking.\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard ControlLogix chassis slots for straightforward installation and expansion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePlant-wide and cell-level data sharing between multiple controllers and distributed I\/O drops.\u003c\/li\u003e\n  \u003cli\u003eHigh-speed transfer of time-critical control data in discrete manufacturing systems.\u003c\/li\u003e\n  \u003cli\u003eIntegration of legacy ControlNet devices into modern ControlLogix architectures.\u003c\/li\u003e\n  \u003cli\u003eMulti-controller systems requiring deterministic peer-to-peer communication and messaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eManufacturer\u003c\/td\u003e\n      \u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCatalog Number\u003c\/td\u003e\n      \u003ctd\u003e1756-CNB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProduct Type\u003c\/td\u003e\n      \u003ctd\u003eControlNet Bridge Communication Module\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePlatform\u003c\/td\u003e\n      \u003ctd\u003eControlLogix (1756 Series)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCommunication Rate\u003c\/td\u003e\n      \u003ctd\u003e5 Mbps\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNetwork Media\u003c\/td\u003e\n      \u003ctd\u003eStandard ControlNet Media\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLogix Connections\u003c\/td\u003e\n      \u003ctd\u003e40 to 48\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMaximum Nodes Supported\u003c\/td\u003e\n      \u003ctd\u003e99 per network\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBackplane Current Draw (5.1V DC)\u003c\/td\u003e\n      \u003ctd\u003e970 mA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBackplane Current Draw (24V DC)\u003c\/td\u003e\n      \u003ctd\u003e1.7 mA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePower Dissipation\u003c\/td\u003e\n      \u003ctd\u003e5.1 W\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n      \u003ctd\u003e17.4 BTU\/hr\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eEnclosure Type\u003c\/td\u003e\n      \u003ctd\u003eOpen-style\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCountry of Origin\u003c\/td\u003e\n      \u003ctd\u003eUnited States\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eConnections \/ Interfaces\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eControlNet BNC tap connector for standard coaxial cable network drops.\u003c\/li\u003e\n  \u003cli\u003eControlLogix backplane interface connector for direct mounting into any slot of a 1756 chassis.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cp\u003eThe 1756-CNB module mounts directly into any slot of a standard ControlLogix 1756 chassis. Ensure the chassis power is disconnected before installing or removing the module. Secure the module using the top and bottom latches to ensure proper backplane seating and electrical connection. Connect the standard ControlNet coaxial cable to the front BNC port using appropriate T-taps and terminating resistors as required by the network topology.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":53770311565675,"sku":"1756-CNB","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/1756-CNB_1200x1200_3ff0e6f6-0049-48f8-b333-677937bd9264.jpg?v=1787741056","url":"https:\/\/www.plcprotech.com\/products\/allen-bradley-1756-cnb-controllogix-controlnet-bridge-communication-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}