{"product_id":"allen-bradley-1756-cnbr-controllogix-controlnet-bridge-module","title":"Allen-Bradley 1756-CNBR ControlLogix ControlNet Bridge Module","description":"\u003ch3\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-CNBR\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a ControlNet communication bridge module designed for the Allen-Bradley ControlLogix platform. It enables deterministic high-speed data exchange between controllers and distributed nodes across a ControlNet network, supporting both simplex and redundant network topologies.\u003c\/p\u003e\n\u003cp\u003eThis module is equipped with dual ControlNet ports for network redundancy and a Network Access Port (NAP) for configuration and diagnostic access via RJ-45 interface. It is engineered to maintain stable communication in time-critical control applications requiring synchronized I\/O and motion data transfer.\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-CNBR\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esupports high-capacity network connections and is designed for installation in standard ControlLogix chassis systems, integrating seamlessly with system power supplies and backplane architecture.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCommunication Interface\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eNetwork Protocol: ControlNet\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eData Rate: 5 Mbps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eControlNet Ports: 2 (supports redundant or simplex configuration)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNetwork Access Port: RJ-45 (8-pin shielded)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaximum Network Nodes: up to 99\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLogical Connections: 40–48 (up to 64 max supported connections)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSystem Compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003ePlatform: ControlLogix\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eChassis Compatibility: 1756-A4, A7, A10, A13, A17\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSlot Requirement: 1-slot module\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical Characteristics\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eBackplane Current:\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e970 mA @ 5.1 VDC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1.7 mA @ 24 VDC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli\u003e\n\u003cp\u003ePower Dissipation: max. 5.5 W\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIsolation Voltage: 30 V continuous\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMechanical \u0026amp; Installation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eMounting: ControlLogix chassis backplane\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnclosure Type: Open-style module\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWeight: 0.99 lbs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCommunication Cable: 1786-RG6 quad-shield coaxial cable\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEnvironmental Conditions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eOperating Temperature: 0°C to 60°C (32°F to 140°F)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFunctional Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eDual-port architecture for redundant ControlNet networks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDeterministic communication for synchronized control systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports high-density I\/O and controller messaging\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntegrated diagnostics and network access capability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-speed motion control systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLarge-scale distributed control architectures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProcess automation requiring deterministic communication\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRedundant industrial network configurations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this module support redundant network operation?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it supports both simplex and fully redundant ControlNet configurations using dual communication ports.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the purpose of the Network Access Port (NAP)?\u003c\/strong\u003e\u003cbr\u003eA: The NAP provides RJ-45 access for configuration, diagnostics, and network troubleshooting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many connections can it handle?\u003c\/strong\u003e\u003cbr\u003eA: It supports up to 64 total connections with 40–48 logical ControlLogix communication links.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43291867512922,"sku":"1756-CNBR","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-CNBR2.jpg?v=1777530544","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-cnbr-controllogix-controlnet-bridge-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}