{"product_id":"allen-bradley-1756-cnbr-controlnet-communication-module","title":"Allen-Bradley 1756-CNBR ControlNet Communication Module","description":"\u003cdiv\u003e\u003cp\u003eAllen-Bradley 1756-CNBR ControlNet Communication Module is a redundant ControlNet interface for Rockwell Automation's ControlLogix systems that bridges a ControlNet network to the ControlLogix backplane. The CNBR (ControlNet Redundant Bridge) supports 40–48 ControlNet connections at a 5 Mbps data rate, enabling reliable cyclic and scheduled data exchanges between ControlNet devices and the Controller. It provides media redundancy via dual BNC connectors and is powered from the ControlLogix backplane, eliminating the need for a separate power supply. As part of the 1756 ControlNet family, it integrates with standard Rockwell configuration workflows for ControlNet networks and is suitable for connecting remote I\/O, drives, and other ControlNet devices to a ControlLogix controller. Note that Rockwell Automation has announced the 1756-CNBR module as discontinued effective December 31, 2024, so customers planning new installations or replacements should evaluate current-generation interface options or migration paths for legacy ControlNet networks.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51657302278446,"sku":null,"price":36.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_43c9252e-8e48-4957-a66b-a754e6b60a37.jpg?v=1769467696","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1756-cnbr-controlnet-communication-module","provider":"PLG Automation ","version":"1.0","type":"link"}