Product Overview
Allen‑Bradley 1794‑AENTR is a dual‑port EtherNet/IP adapter for the FLEX I/O distributed remote‑I/O system. It acts as network gateway between ControlLogix / CompactLogix PAC controllers and field‑mounted FLEX I/O assemblies. Built‑in DLR Device Level Ring capability enables ring‑redundant Ethernet topology; if one network cable fails, data traffic automatically reroutes without I/O communication dropout. It supports star, linear daisy‑chain and ring network layouts, compatible with standard FLEX, FLEX Ex and FLEX‑XT I/O modules. Widely deployed for new automation projects as well as spare‑part replacement for existing Rockwell distributed‑I/O installations.
Series
FLEX I/O is Rockwell’s widely‑used distributed remote‑I/O family for cabinet‑mount and field‑mount I/O deployment. The adapter portfolio includes single‑port 1794‑AENT and dual‑port DLR‑capable 1794‑AENTR, plus extended‑temperature 1794‑AENTRXT variant. These adapters connect discrete and analog FLEX I/O modules to EtherNet/IP control networks for factory‑floor distributed‑control requirementsManualsLib.
Product Features
‑ Dual RJ45 10/100 Mbps Ethernet ports with native DLR Device Level Ring redundancy support ‑ Supports ring, linear daisy‑chain and star EtherNet/IP network topologies ‑ Handles up to 8 FLEX I/O modules on one local Flexbus backplane ‑ Provides 640 mA Flexbus current for connected I/O modules ‑ CIP Sync support for precise time synchronization for motion‑related applications ‑ Multi‑color LED indicators for module status, network status and link diagnostic feedback ‑ Rotary switch for hardware IP‑address setting for fast commissioning ‑ DIN‑rail mounting for standard control‑cabinet installation ‑ Class I Div 2 hazardous‑location certified for classified industrial areas ‑ Fully compatible with ControlLogix, CompactLogix and Micro800 controller families ‑ Drop‑in spare replacement for existing 1794‑AENTR assemblies
Product Parameters
‑ Power Supply: 19.2‑31.2 V DC (nominal 24 V DC) ‑ Ethernet Ports: 2 × RJ45, 10/100 Mbps auto‑negotiation ‑ Network Feature: DLR (Device Level Ring) redundancy ‑ Maximum FLEX I/O Modules: 8 units ‑ Flexbus Output Current: Max 640 mA ‑ Operating Temperature: 0 °C ~ +55 °C ‑ Storage Temperature: ‑40 °C ~ +85 °C ‑ Relative Humidity: 5‑95 %, non‑condensing ‑ Mounting: Standard 35 mm DIN‑rail ‑ Protection Rating: IP20 ‑ Approvals: CE, UL, cUL, Class I Div 2 hazardous‑location certificationRockwell A…
Product Specifications
‑ Form Factor: Compact DIN‑rail FLEX‑style adapter housing ‑ Supported Protocols: EtherNet/IP, CIP implicit/explicit messaging, CIP Sync ‑ Diagnostic: Front‑panel bi‑color LED status indicators, rotary IP‑address selector ‑ Compatibility: 1794‑series FLEX, FLEX Ex, FLEX‑XT I/O modules; ControlLogix, CompactLogix controllers ‑ Software: Configured via Studio 5000 Logix Designer ‑ Weight: Approx 227 g ‑ Maintenance: Direct swap‑out spare adapter for distributed‑I/O system repair
Function
1794‑AENTR communicates with upper‑level PAC controllers over EtherNet/IP network, and exchanges real‑time input‑output data with local FLEX I/O modules via Flexbus backplane. DLR ring‑network function provides network‑path redundancy; upon cable break, it re‑routes communication automatically to maintain continuous I/O operation. The rotary switch allows quick hardware‑based IP‑address assignment. LED lamps give visual feedback for power, network connection and fault conditions for on‑site troubleshooting. It realizes reliable distributed remote‑I/O data acquisition and output drive for field‑side automation equipment.
Purpose
Connect FLEX remote‑I/O racks to EtherNet/IP control networks, implement distributed‑I/O signal collection and output control. Deliver network‑ring redundancy to reduce network‑failure‑caused production downtime. Used for new‑project construction and spare‑part replacement for existing Rockwell distributed‑I/O automation systems.
Application Fields
Automation assembly lines, packaging machinery, material‑handling conveyor systems, water‑wastewater treatment plants, oil‑gas auxiliary control systems, mining‑site distributed I/O, food & beverage production lines, factory‑floor distributed‑control retrofit & migration projects.
Image search keyword: Allen‑Bradley 1794‑AENTR FLEX I/O dual‑port EtherNet/IP DLR adapter module
