{"product_id":"allen-bradley-1756-cnb-communication-bridge-module","title":"Allen-Bradley 1756-CNB Communication Bridge Module","description":"\u003cdiv\u003e\u003cp\u003eThe Allen-Bradley 1756-CNB ControlNet Bridge Module is a single-port bridge that links a ControlLogix controller to a ControlNet network, enabling structured data exchange between a central controller and remote devices across one ControlNet segment. In a ControlLogix chassis it provides a dedicated ControlNet interface with a 5 Mbps data rate and supports 40–48 Logix Communications Connections, making it suitable for bridging I\/O and produced\/consumed data across racks or remote locations. This module is designed for legacy ControlLogix systems and is commonly used to extend ControlNet reach within a multi-chassis architecture, supporting scheduled and unscheduled communications that coordinate control and I\/O operations over the ControlNet network. As of December 31, 2024, Rockwell Automation has discontinued the 1756-CNB, so availability is generally through distributors of legacy components; users maintaining existing systems may source replacement units through authorized channels or refurbishment partners.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51658950770990,"sku":null,"price":110.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_49f57186-d54f-4c00-bcf6-b6cbe939c5c0.jpg?v=1769525840","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1756-cnb-communication-bridge-module","provider":"PLG Automation ","version":"1.0","type":"link"}