{"product_id":"allen-bradley-1756-dhrio-controllogix-dh-rio-bridge-module","title":"Allen-Bradley 1756-DHRIO ControlLogix DH+\/RIO Bridge Module","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1756-DHRIO is a ControlLogix communication module designed to bridge Data Highway Plus (DH+) and Remote I\/O (RIO) networks. This module provides two channels (A and B) for connecting legacy devices to modern ControlLogix systems, enabling seamless integration and data exchange across multiple platforms.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eRockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1756-DHRIO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eData Highway\/Remote I\/O Communication Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocation\u003c\/td\u003e\n\u003ctd\u003e1756 ControlLogix Chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Speed\u003c\/td\u003e\n\u003ctd\u003e57.6 Kbaud, 115.2 Kbaud, 230.4 Kbaud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003e3048 m (10000 ft), 1524 m (5000 ft), 762 m (2500 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Cable\u003c\/td\u003e\n\u003ctd\u003eBelden 89463 twinaxial, 0.52 mm² (20 AWG) rated at 200 °C (392 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5 Volts)\u003c\/td\u003e\n\u003ctd\u003e1.7 milliamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (24 Volts)\u003c\/td\u003e\n\u003ctd\u003e850 milliamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation (Max)\u003c\/td\u003e\n\u003ctd\u003e4.5 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation (Max)\u003c\/td\u003e\n\u003ctd\u003e15.4 BTU per hour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e10612598138361\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure\u003c\/td\u003e\n\u003ctd\u003eOpen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0-60 °C, 32-140 °F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Width\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.64 pounds (0.293 kilograms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpare Connector Kit\u003c\/td\u003e\n\u003ctd\u003ePhoenix MVSTBR2.5\/3-ST BK AU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDual-port design supports both DH+ and RIO protocols, providing flexibility for legacy network integration.\u003c\/li\u003e\n\u003cli\u003eSupports communication speeds of 57.6, 115.2, and 230.4 Kbaud, adapting to various cable lengths and network requirements.\u003c\/li\u003e\n\u003cli\u003eActs as an adapter or scanner on RIO networks, enabling data transfer of analog, digital, block, and specialty data.\u003c\/li\u003e\n\u003cli\u003eAllows up to 32 Logix connections, facilitating robust multi-device communication.\u003c\/li\u003e\n\u003cli\u003eCan transfer messages across up to three chassis and four communication networks, extending system reach.\u003c\/li\u003e\n\u003cli\u003eWorks with a wide range of Rockwell Automation controllers, including PLC-5, SLC, CompactLogix, and ControlLogix.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe 1756-DHRIO is ideal for manufacturing facilities upgrading legacy systems to ControlLogix platforms. It enables communication with legacy PLCs and remote I\/O devices, ensuring minimal disruption during modernization. Typical applications include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eRetrofitting existing DH+ networks to integrate with modern ControlLogix controllers.\u003c\/li\u003e\n\u003cli\u003eConnecting remote I\/O racks in large processing plants to a central control system.\u003c\/li\u003e\n\u003cli\u003eBridging communication between older PLC-5 or SLC systems and newer ControlLogix processors.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation \u0026amp; Setup\u003c\/h2\u003e\u003cp\u003eBefore installing the 1756-DHRIO module, configure the network type switches for each channel according to your network protocol (DH+ or RIO). Install the module into any slot of a 1756 ControlLogix chassis, ensuring the backplane current requirements are met. The module supports hot insertion\/removal, but always follow safety precautions to avoid electrical arcs and electrostatic discharge damage.\u003c\/p\u003e\u003cp\u003eFor wiring, use the recommended Belden 89463 twinaxial cable. Connect the 3-pin terminal for Channel A and B, and the 8-pin mini-DIN port (parallel to Channel A) as needed. For RIO termination, connect Line 1 to the bottom pin, shield to the middle pin, and Line 2 to the last pin. For DH+ wiring, reverse Line 1 and Line 2 connections.\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Integration\u003c\/h2\u003e\u003cp\u003eThe 1756-DHRIO supports communication with Flex I\/O, POINT I\/O, and messaging functions with PLC-5, SLC, CompactLogix, and ControlLogix controllers. It also supports Control and Information Protocol (CIP) messaging, enabling seamless data exchange across different network types.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eRegular inspection of cable connections and termination resistors is recommended to ensure network integrity. The module operates within a temperature range of 0-60 °C, making it suitable for most industrial environments. Its open enclosure design requires installation in a protective cabinet to prevent dust and debris accumulation.\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eWhen purchasing the 1756-DHRIO, verify the part number matches your system requirements. Consider the communication speed and cable length needed for your network. Ensure your chassis has sufficient backplane current capacity. For genuine Allen-Bradley parts and reliable service, PLC Source PRO is a trusted supplier.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default","offer_id":44434886361187,"sku":"1756-DHRIO","price":212.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/1756-2WS_00ae46cb-d45c-4a7c-ba67-d3b930570619.jpg?v=1785777591","url":"https:\/\/www.plcsourcepro.com\/he\/products\/allen-bradley-1756-dhrio-controllogix-dh-rio-bridge-module","provider":"PLC Source PRO","version":"1.0","type":"link"}