{"product_id":"dh-rio-bridge-1756-dhriok-allen-bradley-conformal","title":"DH+ RIO Bridge 1756-DHRIOK Allen Bradley Conformal","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 1756-DHRIOK is a conformal-coated communication module for ControlLogix systems. It provides two channels configurable for Data Highway Plus (DH+) or Remote I\/O (RIO), enabling modern ControlLogix controllers to communicate with legacy PLC-5 and SLC 500 equipment.\u003c\/p\u003e\n\u003ch3\u003eKey Specs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannels:\u003c\/strong\u003e 2, independently configurable as DH+ or RIO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDH+ baud rates:\u003c\/strong\u003e 57.6 Kbps, 115.2 Kbps, 230.4 Kbps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRIO baud rates:\u003c\/strong\u003e 57.6 Kbps, 115.2 Kbps, 230.4 Kbps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnections:\u003c\/strong\u003e 32 message connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent draw:\u003c\/strong\u003e 850 mA @ 5.1 V DC, 3 mA @ 24 V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower dissipation:\u003c\/strong\u003e 6.5 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConformal coating:\u003c\/strong\u003e Yes, for corrosive environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose This\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConformal coating protects against moisture and corrosive atmospheres\u003c\/li\u003e\n\u003cli\u003eDual channels support mixed DH+ and RIO network configurations\u003c\/li\u003e\n\u003cli\u003eEnables gradual migration from legacy PLC-5 systems to ControlLogix\u003c\/li\u003e\n\u003cli\u003eMessage-based communication for data exchange with legacy controllers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the difference between DHRIOK and DHRIO?\u003c\/strong\u003e The DHRIOK features conformal coating for harsh environments; the DHRIO is the standard version.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan it scan Remote I\/O racks?\u003c\/strong\u003e Yes, each channel can be configured as an RIO scanner for 1771 remote I\/O.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs there a replacement for this module?\u003c\/strong\u003e No, Rockwell has not introduced a successor; it remains the standard solution for DH+ and RIO connectivity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMounting Steps\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eInstall the module in any slot of the 1756 chassis.\u003c\/li\u003e\n\u003cli\u003eConnect the 3-pin Phoenix connector to the DH+ or RIO network.\u003c\/li\u003e\n\u003cli\u003eConfigure each channel for DH+ or RIO operation in Studio 5000.\u003c\/li\u003e\n\u003cli\u003eSet baud rates and node addresses to match the legacy network.\u003c\/li\u003e\n\u003cli\u003eVerify communication with legacy devices via message instructions.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eBuying Advice\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelect 1756-DHRIOK for corrosive environments requiring legacy DH+ or RIO connectivity.\u003c\/li\u003e\n\u003cli\u003eFor extended temperature applications, choose the 1756-DHRIOXT.\u003c\/li\u003e\n\u003cli\u003ePlan for future migration: this module has no current replacement and is increasingly sourced through secondary markets.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50194813124746,"sku":"1756-DHRIOK","price":163.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0698\/2818\/2154\/files\/1756-DHRIOK_3ff69893-0700-4cdc-9cf2-a4184db2c21a.jpg?v=1789375127","url":"https:\/\/www.cambiaplc.com\/products\/dh-rio-bridge-1756-dhriok-allen-bradley-conformal","provider":"Controlix Automation","version":"1.0","type":"link"}