{"product_id":"allen-bradley-1756-cn2r-communication-bridge-module","title":"Allen-Bradley 1756-CN2R ControlLogix ControlNet Communication Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Allen-Bradley 1756-CN2R is a high-performance ControlNet communication module designed for the ControlLogix platform. This bridge module facilitates robust data exchange across ControlNet networks, supporting redundant media configurations to ensure high availability in critical industrial control environments. It provides reliable, deterministic communication for distributed I\/O and controller-to-controller messaging.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDual-channel interface for flexible network topology\u003c\/li\u003e\n\u003cli\u003eSupports redundant media for increased fault tolerance\u003c\/li\u003e\n\u003cli\u003eCommunication data rate of 5 Mbps\u003c\/li\u003e\n\u003cli\u003eCapacity for up to 128 Logix connections\u003c\/li\u003e\n\u003cli\u003eSupports up to 99 nodes on the ControlNet network\u003c\/li\u003e\n\u003cli\u003eDesigned for seamless integration within the ControlLogix chassis\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1756-CN2R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eBridge Module \/ Communication Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Protocol\u003c\/td\u003e\n\u003ctd\u003eControlNet\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\u003eLogix Connections\u003c\/td\u003e\n\u003ctd\u003e128\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNode Capacity\u003c\/td\u003e\n\u003ctd\u003e99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5.1V DC)\u003c\/td\u003e\n\u003ctd\u003eRefer to system power budget\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff Code\u003c\/td\u003e\n\u003ctd\u003e8537101190\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the ControlLogix chassis is powered down before inserting or removing the 1756-CN2R module to prevent electrical damage.\u003c\/li\u003e\n\u003cli\u003eVerify that the module is fully seated in the chassis slot and the locking tabs are engaged.\u003c\/li\u003e\n\u003cli\u003eUse appropriate ControlNet coaxial cabling and tap components for the redundant media setup.\u003c\/li\u003e\n\u003cli\u003eMaintain proper grounding practices for the ControlNet trunk line to minimize EMI\/RFI interference.\u003c\/li\u003e\n\u003cli\u003eKeep the module away from extreme heat sources and ensure adequate ventilation within the cabinet.\u003c\/li\u003e\n\u003cli\u003eAlways follow standard ESD handling procedures when touching internal circuitry or connectors.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eWhat is the primary function of the 1756-CN2R?\u003c\/h3\u003e\u003cp\u003eThis module acts as a bridge to connect the ControlLogix controller to a ControlNet network, allowing for deterministic, high-speed communication between controllers and remote I\/O.\u003c\/p\u003e\u003ch3\u003eDoes this module support redundancy?\u003c\/h3\u003e\u003cp\u003eYes, the 1756-CN2R is specifically designed to support redundant media, which allows for a secondary cable path to maintain network integrity if the primary cable fails.\u003c\/p\u003e\u003ch3\u003eWhat is the maximum number of nodes supported?\u003c\/h3\u003e\u003cp\u003eThe module supports up to 99 nodes on a single ControlNet network segment.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":51215102476540,"sku":"1756-CN2R","price":56.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_6f047c0b-8f4e-4018-8d9f-65d21fa4e33f.jpg?v=1788288653","url":"https:\/\/www.electronicplc.com\/es\/products\/allen-bradley-1756-cn2r-communication-bridge-module","provider":"Electronic PLC","version":"1.0","type":"link"}