1794-AENTR FLEX I/O Dual‑Port EtherNet/IP Adapter DLR | Allen‑Bradley

The Original New Allen‑Bradley 1794‑AENTR is a dual‑port EtherNet/IP communication adapter for the FLEX I/O system, designed to connect FLEX I/O modules to EtherNet/IP enabled controllers such as ControlLogix® or CompactLogix™. Featuring two RJ45 ports configured as embedded switches, this adapter supports Device Level Ring (DLR), daisy chain, linear, and star topologies for flexible and resilient network architectures. It contains a built‑in power supply that converts 24V DC to 5V DC to transfer and receive all I/O data and configuration for the entire rack.

Core Engineering Highlights:
Dual RJ45 EtherNet/IP ports with embedded switch | Device Level Ring (DLR), daisy chain, linear, star topologies | Supports up to 8 FLEX I/O modules | 10/100 Mbps communication rate | 24V DC nominal (19.2‑31.2V range) | 400‑500 mA @ 24V DC | 7.1W power dissipation @ 19.2V | 24.2 BTU/hr thermal dissipation | 0‑55°C operating temperature | DIN rail mounting

Key Features:

• Original New Allen‑Bradley 1794‑AENTR module

• Dual RJ45 EtherNet/IP ports with embedded switch technology

• Supports Device Level Ring (DLR) for network resiliency with sub‑second fault recovery

• Supports up to 8 FLEX I/O modules per adapter

• 10/100 Mbps communication rate with auto‑negotiation

• Built‑in power supply converts 24V DC to 5V DC for entire rack operation

• Uses EtherNet/IP messages encapsulated within standard TCP/UDP/IP

• DIN rail mounting for control cabinet installation

• Hot‑swappable module replacement for minimal downtime

• Status indicators: Module Status (red/green), Network Status (red/green), Link Status (green)

• Conformal coated version available for harsh environments (1794‑AENTRXT)

• Certified for hazardous locations: ATEX, IECEx, UL Listed

Applications:

• Connecting FLEX I/O modules to EtherNet/IP networks

• Remote I/O control for distributed automation systems

• Machine control and process automation

• Material handling and conveyor systems

• Plant management and data collection applications

• Time‑critical applications requiring reliable EtherNet/IP communication

• Network topologies requiring Device Level Ring (DLR) redundancy

Technical Specifications:

System Compatibility:

• Rockwell Automation ControlLogix controllers

• CompactLogix controllers

• FLEX I/O 1794 series modules (digital, analog, specialty)

• EtherNet/IP networks with DLR, daisy chain, linear, and star topologies

• Studio 5000 Logix Designer® application

• RSLogix 5000 programming software

• 1794‑TB2, 1794‑TB3, 1794‑TB3S terminal bases

Related Products:

• 1794‑AENTRXT – Extreme temperature version (–20°C to +70°C)

• 1794‑AENT – Single‑port EtherNet/IP adapter (no DLR support)

• 1794‑TB2 – FLEX I/O terminal base unit (screw clamp)

• 1794‑TB3S – FLEX I/O terminal base unit (spring clamp)

• 1794‑IB16 – 16‑point digital input module

• 1794‑OB16 – 16‑point digital output module

• 1794‑IE8 – 8‑channel analog input module

• 1794‑OE4 – 4‑channel analog output module

• 1585J‑M8TBJM‑1M9 – Ethernet patch cable (accessory)

PLC ERA is an independent industrial automation distributor supplying 100% genuine Original New products through established global supply channels. Allen‑Bradley, FLEX I/O, ControlLogix, and CompactLogix are trademarks of Rockwell Automation.