{"product_id":"allen-bradley-1756-dhrio-dh-rio-interface-module","title":"Allen-Bradley 1756-DHRIO DH RIO Interface Module","description":"\u003cdiv\u003e\u003cp\u003eThe Allen-Bradley 1756-DHRIO is a two‑channel DH+\/RIO Bridge\/Scanner module for ControlLogix that sits in a 1756 backplane to connect legacy DH+ and Remote I\/O networks to a modern ControlLogix system. Channel A handles DH+ traffic while Channel B carries Remote I\/O data, enabling bidirectional message routing between a DH+ network and Remote I\/O endpoints through the ControlLogix controller. The unit provides three terminal blocks and supports dual‑channel operation, letting you bridge between DH+ devices and RIO I\/O or other DH+\/RIO paths without additional adapters. It is used to exchange data with legacy DH+ devices and RIO racks via MSG-style communications while housed in a 1756 chassis. Rockwell Automation discontinued the 1756-DHRIO as of December 31, 2024; existing installations may still rely on this module where replacements are needed.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"New","offer_id":51659692966190,"sku":null,"price":622.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_5b05f8f2-d9f0-4d01-bacf-b87668a49760.jpg?v=1769529734","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1756-dhrio-dh-rio-interface-module","provider":"PLG Automation ","version":"1.0","type":"link"}