{"product_id":"allen-bradley-1791d-16b0x-compactblock-i-o-devicenet-discrete-input-module","title":"Allen Bradley 1791D-16B0X CompactBlock I\/O DeviceNet Discrete Input Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen Bradley 1791D-16B0X\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ebelongs to the CompactBlock I\/O series, providing a high-density, space-saving solution for distributed control via DeviceNet. This discrete input module features 16 sinking-type input points designed to interface with 24V DC field devices like limit switches, proximity sensors, and pushbuttons. By placing I\/O closer to the field devices, this module reduces wiring costs and simplifies troubleshooting in complex automation cells. We supply this unit in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econdition to ensure your network maintains peak communication integrity and logic accuracy.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 1791D-16B0X utilizes high-speed circuitry to process digital signals across the following parameters:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen Bradley (Rockwell Automation)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInputs per Block\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e16 Points\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSinking (24V DC Nominal)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eVoltage Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10–30V DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOn-state Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e10V DC Min\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOff-state Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5V DC Max\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOn-state Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e11.0mA @ 30V Max; 2.0mA @ 10V Min\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eI\/O Exchange Modes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePoll, Cyclic, Change of State (CoS)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProtection Rating\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIEC IP20\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCommunication Rate\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e125Kbps, 250Kbps, 500Kbps (Auto-detect)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.56 lbs (0.26 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe 1791D-16B0X addresses critical integration challenges in distributed DeviceNet architectures:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Density Compact Footprint:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe CompactBlock design integrates 16 channels into a small form factor, allowing for installation in shallow enclosures or directly on machine frames where cabinet space is at a premium.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOptimized Data Efficiency:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis module supports \"Change of State\" (CoS) data exchange. Instead of constantly polling every point, the module only updates the controller when an input actually changes. This technical feature reduces network traffic and frees up bandwidth for other critical DeviceNet traffic.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eComprehensive Visual Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThree distinct LED tiers provide instant hardware status. The Mod\/Net LEDs monitor network health, the Logic LED tracks internal module status, and individual yellow I\/O LEDs pinpoint exactly which field device is active, drastically reducing downtime during fault tracing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVersatile Media Support:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe hardware supports both Thick and Flat DeviceNet media. It maintains reliable communication at distances up to 500 meters (at 125Kbps), providing engineers with maximum flexibility for large-scale plant floor layouts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Input Filtering:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe circuitry handles a wide input range (10-30V DC) and features precise off-state current thresholds (1.5mA). This prevents \"ghost\" signals caused by leakage current from long cable runs or high-impedance sensors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I set the DeviceNet Node Address for the 1791D-16B0X?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou set the node address (MAC ID) and communication rate via the hardware switches located on the module or through software commissioning tools like RSNetWorx for DeviceNet.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between Sinking and Sourcing inputs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1791D-16B0X is a sinking module, meaning the input point \"sinks\" current from the field device to the common. You must pair this module with sourcing (PNP) sensors or dry contact switches connected to the positive supply.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module support analog signals?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 1791D-16B0X is strictly a discrete (digital) input module. It only processes ON\/OFF signals. For analog requirements, you must select a specific 1791D analog block.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow can I be sure the product is Brand New?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe guarantee the 1791D-16B0X is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e. Every unit ships in its original Allen Bradley factory-sealed box, complete with the authentic UPC (612598185733) and manufacturer-applied quality control labels.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52793303662901,"sku":"1791D-16B0X","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1791D-16B0X.png?v=1777360798","url":"https:\/\/www.5gplc.com\/products\/allen-bradley-1791d-16b0x-compactblock-i-o-devicenet-discrete-input-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}