Allen‑Bradley 1794‑AENTR Flex I/O EtherNet/IP Adapter 2 Port 10/100 Mbps DLR

Dual‑port EtherNet/IP communication adapter for Flex I/O systems, supporting Device Level Ring (DLR) and linear topologies for distributed I/O over industrial Ethernet networks.

The Allen‑Bradley 1794‑AENTR is a dual‑port EtherNet/IP adapter designed for Flex I/O systems. It provides high‑speed 10/100 Mbps network connectivity, allowing up to eight Flex I/O modules to communicate with a Logix controller over an EtherNet/IP network. With two RJ45 ports featuring integrated switch technology, the adapter supports Device Level Ring (DLR) for network redundancy as well as linear topologies, making it ideal for distributed I/O applications requiring reliability and fault tolerance. Used in Flex I/O distributed I/O systems with EtherNet/IP adapters, I/O modules, and terminal bases.

Applications:

• Distributed I/O control over EtherNet/IP networks

• Factory automation and process control systems

• Material handling and packaging machinery

• Remote I/O expansion for ControlLogix and CompactLogix

• Industrial network redundancy with DLR topology

Key Features:

• Dual 10/100 Mbps EtherNet/IP ports with embedded switch

• Device Level Ring (DLR) support for network fault tolerance

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

• DIN rail mounting for compact installation

• Status indicators for module, network, and link activity

• 24V DC nominal input (19.2‑31.2V DC range)

• 0°C to 55°C operating temperature

• IP20 open‑style enclosure

Technical Specifications:

• Communication: EtherNet/IP, 10/100 Mbps

• Ports: 2 x RJ45 (auto‑negotiation)

• I/O capacity: 8 Flex I/O modules

• Input voltage: 19.2‑31.2V DC (24V DC nominal)

• Power consumption: 500 mA @ 24V DC

• FlexBus current: 640 mA @ 5V DC

• Inrush current: 18 A for 2 ms

• Mounting: DIN rail

• Dimensions: 87 × 94 × 69 mm

• Weight: 0.23 kg (0.51 lb)

System Integration:

• PLC Controllers: ControlLogix 1756, CompactLogix 1769, MicroLogix 1400

• Networks: EtherNet/IP, DLR ring, linear topologies

• Software: Studio 5000, RSLogix 5000, RSLinx Classic

• I/O System: 1794 Flex I/O modules (digital, analog, specialty)

• Terminal Bases: Compatible with all Flex I/O terminal bases

Related Products:

• Higher Capacity Adapter: 1794‑AENTR (dual port) – this product (same)

• Single Port Adapter: 1794‑AENT (single port version)

• PLC Controller: 1756‑L83E ControlLogix – system core

• Analog I/O: 1794‑IE12 Flex I/O Analog Input Module

• Digital I/O: 1794‑IB16 Flex I/O Digital Input Module

PLC ERA is an independent industrial automation distributor. Products are sourced from established supply channels and inspected before shipment. International shipping available.