{"product_id":"allen-bradley-1756-cnbr-controlnet-bridge-redundant","title":"Allen-Bradley 1756-CNBR ControlNet Bridge Redundant","description":"\u003cdiv\u003e\u003cp\u003eThe Allen-Bradley 1756-CNBR ControlNet Bridge Redundant is a redundant bridge module for ControlNet networks within Rockwell Automation’s ControlLogix ecosystem. It performs the same bridging function as the standard 1756-CNB, connecting a ControlNet network to a ControlLogix backplane while adding redundant media to improve reliability and availability. The module supports 40–48 ControlNet connections, enabling wide-scale bridging between ControlNet devices and the ControlLogix controller and ensuring deterministic data flow. In a redundant controller chassis, the CNBR provides automatic failover between primary and secondary ControlNet paths, helping to maintain communication when a media fault occurs. Typical uses include manufacturing automation and process control environments where remote I\/O, sensors, and actuators rely on continuous ControlNet communication to the controller. The CNBR is designed to work alongside other 1756-series modules in a ControlLogix rack and is managed according to Rockwell’s redundancy documentation for ControlNet bridges, including configuration and diagnostic practices to monitor bridge health and maintain uninterrupted data exchange. \u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"New","offer_id":51657302212910,"sku":null,"price":71.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_0efb4126-7e66-425b-b3b4-335db7f18cb2.jpg?v=1769467695","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1756-cnbr-controlnet-bridge-redundant","provider":"PLG Automation ","version":"1.0","type":"link"}