{"product_id":"1756-cn2rxt-allen-bradley-controllogix-controlnet-redundant-bridge-module","title":"1756-CN2RXT | Allen Bradley ControlLogix ControlNet Redundant Bridge Module","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen Bradley 1756-CN2RXT\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efunctions as a high-performance ControlNet communication bridge within the ControlLogix platform. This module enables deterministic, repeatable data transfers between controllers and I\/O chassis. As a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal XT (Extended Temperature) version, it features specialized hardening and conformal coating to survive extreme industrial climates where standard networking hardware fails. It provides dual BNC ports for media redundancy, ensuring uninterrupted data flow during a single cable failure.\u003c\/p\u003e\n\u003ch2\u003ePart Number Breakdown\u003c\/h2\u003e\n\u003cp\u003eThe 1756-CN2RXT code indicates specific high-availability and environmental capabilities:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e1756:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIdentifies the ControlLogix system architecture.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCN:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSpecifies the ControlNet communication protocol.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRepresents the enhanced performance series with higher connection capacity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eR:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIndicates Redundancy support (Dual BNC ports).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eXT:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSignifies\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eExtreme Environment\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ehardening (Extended temperature and conformal coating).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp\u003eThe following data highlights the module's electrical and networking performance:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCommunication Rate\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5 Mbps\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eLogix Connections\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e128\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMax Supported Connections\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e131\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMax Number of Nodes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e99\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5.1V DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.3 Amps\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePower Dissipation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e6.6 Watts\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSlot Width\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 (Single Slot)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eChassis Location\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAny Slot\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.31 lbs (0.14 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRedundant Path Reliability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDual BNC connectors allow for a secondary cable path. If a trunk line sustains physical damage, the 1756-CN2RXT switches to the redundant link instantly without dropping the I\/O connection or stopping the process.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eXT Environmental Hardening:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe \"XT\" designation ensures the module operates across a significantly wider temperature range than standard components. The factory-applied conformal coating protects internal circuitry from salt spray, humidity, and corrosive chemical vapors typical in oil and gas or wastewater facilities.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Connection Density:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupporting up to 131 total connections, this module manages massive I\/O counts and multiple peer-to-peer controller communications simultaneously, reducing the total number of bridge modules required in the chassis.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDeterministic Data Delivery:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUnlike standard Ethernet, ControlNet utilizes a Scheduled Nut (Network Update Time) to guarantee that critical control data arrives at the exact millisecond required, eliminating network jitter in high-speed motion or safety applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the 1756-CN2RXT in a standard 1756-A7 or 1756-A10 chassis?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The module fits into any standard ControlLogix chassis. However, to fully leverage the \"XT\" environmental benefits, we recommend installing it within an XT-rated chassis and enclosure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module require a specific firmware version?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. Enhanced modules like the 1756-CN2RXT require specific firmware revisions to unlock the 128-connection capacity. Always check your RSLogix 5000 or Studio 5000 project version for compatibility before installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the primary difference between this and the standard 1756-CN2R?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1756-CN2RXT provides the exact same communication functionality as the 1756-CN2R but adds conformal coating and extended temperature hardware. Use the XT version for installations subject to thermal extremes or corrosive atmospheres.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a factory-sealed unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAbsolutely. We supply this 1756-CN2RXT as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoriginal stock in the original manufacturer's packaging with a valid UPC (612598554836).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52475710308661,"sku":"1756-CN2RXT","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1756-CN2R_0794ce4f-037d-4cdc-9c2f-c402c6c0ec01.jpg?v=1774404564","url":"https:\/\/www.5gplc.com\/products\/1756-cn2rxt-allen-bradley-controllogix-controlnet-redundant-bridge-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}