{"product_id":"allen-bradley-1756-dhrio-digital-input-output-module","title":"Allen-Bradley 1756-DHRIO Digital Input Output Module","description":"\u003cdiv\u003e\u003cp\u003eAllen-Bradley 1756-DHRIO is a DH+\/RIO bridge\/scanner module for Rockwell Automation's ControlLogix systems, providing two independent DH+ channels that connect a ControlLogix rack to DH+ remote I\/O networks and Remote I\/O devices. The module mounts in a 1756 backplane and uses three terminal blocks; it functions as both a DH+ bridge and a Remote I\/O scanner, enabling the transfer of digital I\/O data and supporting block-transfer communications to and from remote I\/O modules. Each channel supports DH+ communications at 57.6 kbps, with RIO traffic configurable up to higher speeds (up to 230.4 kbps in some configurations), and it handles multiple remote I\/O connections per channel. As of December 31, 2024, Rockwell Automation indicated this family of DH+\/RIO communications modules has been discontinued and is no longer available new, though used units may still circulate. Common applications include migrating or interfacing legacy DH+ networks with modern ControlLogix controllers, enabling data exchange with DH+ devices and Remote I\/O racks without a full network upgrade.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51658948313390,"sku":null,"price":94.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_01945cb5-efee-4eed-a2eb-67e7f2e965e6.jpg?v=1769525823","url":"https:\/\/plgautomation.com\/products\/allen-bradley-1756-dhrio-digital-input-output-module","provider":"PLG Automation ","version":"1.0","type":"link"}