{"product_id":"1734-aentr-allen-bradley-point-i-o-dual-ethernet-adapter","title":"1734-AENTR Allen-Bradley POINT I\/O Dual Ethernet Adapter","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #1a5276;\"\u003e\u003cstrong\u003e1734-AENTR Allen-Bradley POINT I\/O Dual-Port EtherNet\/IP Adapter Module\u003c\/strong\u003e\u003c\/span\u003e serves as the central communication head for distributed I\/O racks.\u003c\/p\u003e\n\u003cp\u003ePositioned on the far left of the DIN-rail assembly, this interface links up to 63 local expansion I\/O modules directly to programmable automation controllers (PACs).\u003c\/p\u003e\n\u003cp\u003eDual embedded RJ-45 copper ports enable high-speed 10\/100 Mbps communication across modern Device Level Ring (DLR), linear daisy-chain, star, and tree network architectures.\u003c\/p\u003e\n\u003cp\u003eEngineers utilize this 24V DC powered adapter to process simultaneous TCP\/UDP messaging from multiple PLC scanners without requiring external network routing tables.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications Table\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" width=\"100%\"\u003e\n\u003cthead\u003e\n\u003ctr bgcolor=\"#f2f2f2\"\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification Category\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eTechnical Parameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eEngineering Value \/ Range\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"3\"\u003e\u003cstrong\u003eSystem Identification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBrand \u0026amp; Manufacturer\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #1a5276;\"\u003e\u003cstrong\u003eRockwell Automation \/ Allen-Bradley\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Series\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #1a5276;\"\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/allen-bradley-1734-point-i-o\"\u003ePOINT I\/O\u003c\/a\u003e System (Bulletin 1734)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCatalog Part Number\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #1a5276;\"\u003e\u003cstrong\u003e1734-AENTR\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"4\"\u003e\u003cstrong\u003eNetwork \u0026amp; Communication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePhysical Connection Interface\u003c\/td\u003e\n\u003ctd\u003eDual embedded RJ-45 ports (Cat 5 \/ Cat 6 twisted pair)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Speed \u0026amp; Mode\u003c\/td\u003e\n\u003ctd\u003e10\/100 Mbits\/s auto-negotiation, Full\/Half-Duplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Network Topologies\u003c\/td\u003e\n\u003ctd\u003eDevice Level Ring (DLR), Linear Daisy-Chain, Star, Tree\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion Capacity Limits\u003c\/td\u003e\n\u003ctd\u003eUp to 63 I\/O modules; max 31 direct controller connections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"3\"\u003e\u003cstrong\u003ePower Supply \u0026amp; Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInput Voltage Rating\u003c\/td\u003e\n\u003ctd\u003e24V DC nominal (10.0V to 28.8V DC field range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Power Dissipation\u003c\/td\u003e\n\u003ctd\u003e10.4 Watts @ 28.8V DC input voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOvervoltage \u0026amp; Electrical Protection\u003c\/td\u003e\n\u003ctd\u003eReverse polarity protection; 50V continuous isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"3\"\u003e\u003cstrong\u003ePhysical \u0026amp; Operational\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNetwork Address Assignment\u003c\/td\u003e\n\u003ctd\u003eHardware rotary thumbwheel switches, BOOTP, or Static IP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature Range\u003c\/td\u003e\n\u003ctd\u003e-20°C to +60°C (-4°F to +140°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhysical Weight \u0026amp; Mounting\u003c\/td\u003e\n\u003ctd\u003e0.62 lbs (0.28 kg); Vertical DIN-rail mounting arrangement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eTarget Equipment \u0026amp; Application Scenarios\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Availability Packaging Skids:\u003c\/strong\u003e Implements Device Level Ring (DLR) topologies to maintain continuous I\/O control during single-point cable breaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Controller Machine Cells:\u003c\/strong\u003e Facilitates simultaneous data exchange where separate safety and standard ControlLogix PLCs read shared field inputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular Assembly Lines:\u003c\/strong\u003e Serves as a compact distributed drop head, routing digital and analog field signals back to centralized control cabinets over EtherNet\/IP.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eAdvanced Diagnostic Capabilities\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe unit features front-facing diagnostic LED indicators providing real-time operational status for module health, network activity, link speed, and point-bus communication integrity.\u003c\/p\u003e\n\u003cp\u003eEmbedded Web Server software allows field technicians to inspect packet loss statistics, IP configuration tables, and slot-by-slot module status using standard web browsers.\u003c\/p\u003e\n\u003cp\u003eAutomatic device recovery (ADR) support enables rapid replacement of faulty downstream expansion cards without manual re-commissioning.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight \u0026amp; Field Experience\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eDuring a network modernization project at an automotive stamping plant, intermittent EtherNet\/IP dropouts regularly halted production lines using star-topology cabling.\u003c\/p\u003e\n\u003cp\u003ePhysical damage to a single drop line resulted in immediate downtime across downstream sub-panels.\u003c\/p\u003e\n\u003cp\u003eOur automation engineering team specified upgrading the remote drops to the \u003cspan style=\"color: #1a5276;\"\u003e\u003cstrong\u003e1734-AENTR\u003c\/strong\u003e\u003c\/span\u003e dual-port adapter configured in a Device Level Ring (DLR) loop.\u003c\/p\u003e\n\u003cp\u003eWhen a physical cable break was deliberately induced during testing, the \u003cspan style=\"color: #1a5276;\"\u003e\u003cstrong\u003e1734-AENTR\u003c\/strong\u003e\u003c\/span\u003e rerouted network traffic in less than 3 milliseconds without dropping controller connections.\u003c\/p\u003e\n\u003cp\u003eThis implementation completely eliminated network-induced line halts and restored uninterrupted production output.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePackaging, Delivery \u0026amp; Warranty Terms\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWe rigorously inspect and package every \u003cspan style=\"color: #1a5276;\"\u003e\u003cstrong\u003e1734-AENTR\u003c\/strong\u003e\u003c\/span\u003e adapter in ESD-protective bubble packaging prior to dispatch.\u003c\/p\u003e\n\u003cp\u003eOrders ship within 24 to 48 hours via fast global express carriers including FedEx, UPS, and DHL.\u003c\/p\u003e\n\u003cp\u003eAll items carry a comprehensive 12-month warranty covering operational defects and hardware failures.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: How do rotary thumbwheel switches simplify static IP addressing on the 1734-AENTR?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA1: Setting the three rotary dials (001-254) automatically assigns the final octet of a 192.168.1.xxx subnet without requiring software tool connections.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Why is enabling BOOTP\/DHCP without a static lease server dangerous in production networks?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA2: Power-cycling the adapter under dynamic DHCP settings may issue a new IP address, severing active I\/O communication loops with the PLC scanner.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: What distinguishes a 1734-AENTR dual-port module from standard single-port 1734-AENT adapters?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA3: The dual-port design features an internal embedded Ethernet switch supporting fault-tolerant ring (DLR) and daisy-chain topologies without external switches.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: What causes point-bus communication faults when exceeding power distribution limits?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA4: High module counts draw excessive current from the internal point-bus; installing a 1734-FPD field power distributor restores adequate logic voltage levels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: What critical parameters should engineers check before purchasing replacement adapter modules?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA5: Verify hardware revision compatibility, inspect DIN-rail latch mechanisms, confirm physical rotary switch condition, and ensure suppliers supply a 12-month warranty.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45013896167606,"sku":"1734-AENTR","price":175.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1734-AENTRK_a7f2f317-f194-4f1c-b721-f57d2415c64d.jpg?v=1787899502","url":"https:\/\/www.plcsparehub.com\/products\/1734-aentr-allen-bradley-point-i-o-dual-ethernet-adapter","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}