{"product_id":"allen-bradley-1794-adn-flex-i-o-devicenet-adapter-module","title":"Allen-Bradley 1794-ADN FLEX I\/O DeviceNet Adapter Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e1794-ADN\u003c\/strong\u003e is a network communications adapter designed for the \u003cstrong\u003eFLEX I\/O\u003c\/strong\u003e distributed input\/output platform. This component serves as the physical and logical gateway linking a local cluster of up to eight digital, analog, or specialty operational modules to a centralized programmable logic controller over a \u003cstrong\u003eDeviceNet\u003c\/strong\u003e network infrastructure. It manages high-speed, bidirectional data transactions, translating the subsystem bus variables across the proprietary FlexBus backplane into discrete application-layer frames specified by the open industrial network standard.\u003c\/p\u003e\n\u003cp\u003eOperating as a standard slave device on the master bus, the module contains built-in microcontrollers that manage independent startup mapping routines, including a fresh out-of-the-box discovery protocol that auto-detects and allocates precise block dimensions per physical I\/O slot. The integrated communication hardware accommodates a singular drop or daisy-chain linear topology using screw-secured plug-in connectors. The \u003cstrong\u003e1794-ADN\u003c\/strong\u003e is deployed inside industrial machine panels, remote sensor arrays, assembly plant conveyor lines, and localized processing skids requiring reliable, space-saving signal multiplexing to reduce physical panel wiring overhead.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInterfaces a centralized DeviceNet infrastructure with local modular distributed FLEX I\/O rails.\u003c\/li\u003e\n\u003cli\u003eAutomatic physical I\/O slot discovery and configuration parsing during power-up sequence routines.\u003c\/li\u003e\n\u003cli\u003eRemovable front-mounted network screw connector to maintain cable bus connections during replacement cycles.\u003c\/li\u003e\n\u003cli\u003eThree physical rotary thumbwheel selectors enabling immediate, hard-wired node address specification.\u003c\/li\u003e\n\u003cli\u003eDirect internal translation capabilities for up to eight distinct operational backplane modules.\u003c\/li\u003e\n\u003cli\u003eThree distinct diagnostic light-emitting diodes providing localized status logs for power, adapter, and network link states.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDistributed control panel sensor aggregation over wide production plant networks.\u003c\/li\u003e\n\u003cli\u003eAutomotive assembly station line monitoring and discrete block control.\u003c\/li\u003e\n\u003cli\u003eConveyor sortation systems and high-density packaging line distribution clusters.\u003c\/li\u003e\n\u003cli\u003eSpecialized manufacturing skid machinery data acquisition.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eRockwell Automation \/ Allen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFLEX I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1794-ADN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDeviceNet Communications Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Module Capacity\u003c\/td\u003e\n\u003ctd\u003e8 Modules Maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Protocols\u003c\/td\u003e\n\u003ctd\u003eDeviceNet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Baud Rates\u003c\/td\u003e\n\u003ctd\u003e125 kbps, 250 kbps, 500 kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Supply Voltage\u003c\/td\u003e\n\u003ctd\u003e24V DC Nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperational Voltage Window\u003c\/td\u003e\n\u003ctd\u003e19.2V DC to 31.2V DC (Includes 5% AC Ripple)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Current Draw\u003c\/td\u003e\n\u003ctd\u003e300 mA at 24V DC, 400 mA at 19.2V DC Maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeviceNet Network Power Load\u003c\/td\u003e\n\u003ctd\u003e24V DC at 90 mA Maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexBus Power Delivery\u003c\/td\u003e\n\u003ctd\u003e640 mA at 5V DC Maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e50V Continuous (Basic Insulation Type)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e7.6 W Maximum at 19.2V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e26 BTU\/hour Maximum at 19.2V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Type Rating\u003c\/td\u003e\n\u003ctd\u003eOpen Style \/ IP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Size Limits\u003c\/td\u003e\n\u003ctd\u003e22 AWG to 12 AWG Stranded Copper Rated at 75 Celsius Minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 55 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity Window\u003c\/td\u003e\n\u003ctd\u003e5% to 95% Non-Condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e195.5 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e87 mm x 68 mm x 69 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eConnections\/Interfaces\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eConnector Pin\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal A\u003c\/td\u003e\n\u003ctd\u003eExternal Operational Supply +V DC Input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal B\u003c\/td\u003e\n\u003ctd\u003eExternal Operational Supply -V Common Input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal C\u003c\/td\u003e\n\u003ctd\u003eChassis Functional Earth Ground Lead Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeviceNet Pin 1 (Black)\u003c\/td\u003e\n\u003ctd\u003eNetwork V- Power Supply Reference Common\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeviceNet Pin 2 (Blue)\u003c\/td\u003e\n\u003ctd\u003eCAN_L Signal Communication Inverted Node\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeviceNet Pin 3 (Bare)\u003c\/td\u003e\n\u003ctd\u003eNetwork Cable Metallic Drain Shield Ground Node\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeviceNet Pin 4 (White)\u003c\/td\u003e\n\u003ctd\u003eCAN_H Signal Communication Non-Inverted Node\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeviceNet Pin 5 (Red)\u003c\/td\u003e\n\u003ctd\u003eNetwork V+ External Operating Power Rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003ch3\u003eDIN Rail Mounting\u003c\/h3\u003e\n\u003cp\u003eTilt the top lip of the adapter bracket assembly onto an IEC-compliant 35 mm metallic DIN rail. Pivot the lower half of the module box downward until the spring-activated bottom tracking latch engages into a locked alignment. Install rigid physical end anchors flanking the boundary ends of the rail string to block lateral movement.\u003c\/p\u003e\n\u003ch3\u003eFlexBus Backplane Alignment\u003c\/h3\u003e\n\u003cp\u003ePosition the network adapter module at the leftmost boundary slot of the mounting rail. Align the receiving notch profile on the lower right casing wall with the anchor hook on the first functional I\/O terminal base, sliding the units firmly together until the side FlexBus connection bus path pins bridge fully inside the terminal sockets.\u003c\/p\u003e\n\u003ch3\u003eWiring and Torque Requirements\u003c\/h3\u003e\n\u003cp\u003eExclusively terminate field cables using stranded copper conductors inside specified gauge restrictions. Torque all front removable terminal block power connections to exactly 0.8 N-m (7 lb-in). Ensure power supply connection leads tracking the external direct current input are brief and do not exceed 3 meters in total length.\u003c\/p\u003e\n\u003ch3\u003eNoise Separation Regulations\u003c\/h3\u003e\n\u003cp\u003eIsolate network interface drop lines and associated FlexBus signaling rails away from electrical power drops, variable frequency drive output conduits, high-voltage switching fields, and heavy motor feeds to prevent high-frequency electromagnetic field induction.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum number of modules this adapter can drive?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe unit can interface with up to eight independent FLEX I\/O modular blocks attached continuously to the right side of its backplane.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is the unique network address defined on this specific component?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe node address is selected manually by adjusting the three mechanical rotary thumbwheel switches on the front facing panel before starting the network.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat power output does the internal circuit feed down the local backplane?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe adapter supplies a maximum current of 640 mA at 5V DC to power the logic chips of connected extension modules.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this device require power from both the external source and the network cable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the internal backplane requires a standard 24V DC auxiliary source, while the primary transceiver circuit must receive power directly from the active DeviceNet trunk lines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat do flashing red cycles on the Module\/Network LED signify?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA flashing red indication represents a minor recoverable fault state, suggesting an address configuration conflict or a data register mismatch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum data rate supported across this link?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe adapter communicates at standard industrial intervals of 125 kbps, 250 kbps, and 500 kbps depending on total network loop lengths.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan an engineer hot-swap the network adapter when the system is active?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, while individual I\/O modules allow removal under power, extracting the network adapter completely interrupts communication blocks for all eight secondary points.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat isolation rating is certified for this specific interface structure?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe unit features basic insulation certified for a continuous potential barrier up to 50V between user power lines and the system logic circuitry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat setting initiates an absolute factory configuration wipe on the hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSetting the three mechanical rotary switch dials to a code pattern of 888 and cycling power executes an internal memory clear routine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat type of cabling is approved to bridge the primary bus connections?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe network link requires certified Belden YR-29832 or equivalent shielded industrial twisted-pair DeviceNet media.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52695187423595,"sku":"1794-ADN","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/allen-bradley-1794-adn-devicenet-adaptor-bj5kxzvvrfc_70aca642-c898-4ff7-8e1c-dca9081295f2.jpg?v=1766114509","url":"https:\/\/www.plcprotech.com\/bg\/products\/allen-bradley-1794-adn-flex-i-o-devicenet-adapter-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}