{"product_id":"allen-bradley-1756-dhrio-controllogix-data-highway-plus-remote-i-o-module","title":"Allen-Bradley 1756-DHRIO ControlLogix Data Highway Plus\/Remote I\/O Module","description":"\u003ch3 class=\"\"\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"\"\u003eThe Allen-Bradley 1756-DHRIO is a high-performance ControlLogix gateway module designed to facilitate seamless communication between modern Logix-based architectures and legacy industrial networks.\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eIt serves as a dual-channel interface that supports both Data Highway Plus (DH+) messaging and Universal Remote I\/O (RIO) scanning.\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eThis module is essential for facility upgrades,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eallowing ControlLogix processors to control existing I\/O racks or exchange data with PLC-5 and SLC 500 controllers without replacing established cabling infrastructure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"\"\u003eBy integrating the 1756-DHRIO into a standard ControlLogix chassis,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eusers can manage complex migration strategies.\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eThe module functions as a bridge,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003erouting messages between networks and providing a high-speed link for time-critical control data.\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eEach of its two channels can be independently configured for either protocol,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eoffering maximum flexibility for hybrid system topologies.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"\"\u003eTechnical Characteristics and Performance\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"\"\u003eThe 1756-DHRIO is engineered for precise data throughput and low backplane power consumption,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eensuring it does not overtax the system power supply while maintaining high network reliability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eNetwork Channels:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eTwo independent 3-pin isolated ports.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eSupported Protocols:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eData Highway Plus (DH+) and Universal Remote I\/O (RIO).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eCommunication Rates:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eSelectable speeds of 57.\u003c\/span\u003e\u003cspan class=\"\"\u003e6 Kbps,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e115.\u003c\/span\u003e\u003cspan class=\"\"\u003e2 Kbps,\u003c\/span\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eand 230.\u003c\/span\u003e\u003cspan class=\"\"\u003e4 Kbps.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eMaximum Distance:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eUp to 3,\u003c\/span\u003e\u003cspan class=\"\"\u003e048 meters (10,\u003c\/span\u003e\u003cspan class=\"\"\u003e000 feet) at 57.\u003c\/span\u003e\u003cspan class=\"\"\u003e6 Kbps using Belden 9463 twinaxial cable.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eBackplane Current:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e1.\u003c\/span\u003e\u003cspan class=\"\"\u003e7 mA at 5.\u003c\/span\u003e\u003cspan class=\"\"\u003e1V DC; 850 mA at 24V DC.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eThermal Dissipation:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e15.\u003c\/span\u003e\u003cspan class=\"\"\u003e4 BTU\/hr with a maximum power dissipation of 4.\u003c\/span\u003e\u003cspan class=\"\"\u003e5 Watts.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eChassis Slot Width:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eOccupies a single slot in any 1756 ControlLogix chassis.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eOperational Environment:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eStandard industrial rating of 0°C to 60°C (32°F to 140°F).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"\"\u003eIndustrial Applications and Network Integration\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"\"\u003eThis module is the industry standard for phased control system modernization and distributed network management.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eLegacy Controller Integration:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eEnabling ControlLogix CPUs to read\/write data to SLC 500 or PLC-5 systems via DH+.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003ePhased Modernization:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eReplacing an old processor with a ControlLogix rack while keeping existing 1771 or 1746 Remote I\/O chassis in place.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eLong-Distance Messaging:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eUtilizing the robust twinaxial cable physical layer for communication across large-scale manufacturing plants.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong class=\"\"\u003eHMI Connectivity:\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eLinking legacy PanelView terminals or SCADA systems to modern Logix controllers through established DH+ drops.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45519127642285,"sku":"1756-DHRIO","price":1599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley-1756-dhrio-communication-module-fpkkn3iw4ia.jpg?v=1766987514","url":"https:\/\/www.maxwellplc.com\/products\/allen-bradley-1756-dhrio-controllogix-data-highway-plus-remote-i-o-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}