FLEX I/O (1794 Series) | Allen-Bradley | 1794-AENTR FLEX I/O ENet/IP Redundant Adapter Module

Product Description: Allen-Bradley 1794-AENTR

The Allen-Bradley 1794-AENTR is a dual-port EtherNet/IP adapter for the FLEX I/O platform, designed to connect FLEX I/O modules to a Logix-based controller over an EtherNet/IP network. It supports Device Level Ring (DLR) for network redundancy and provides high-speed, deterministic communication in distributed I/O architectures. This module enables up to 8 FLEX I/O modules per adapter and integrates seamlessly into scalable, modular industrial control systems.

Key Features

• Connects FLEX I/O to EtherNet/IP networks
• Dual RJ45 Ethernet ports for linear, star, or DLR topologies
• Supports up to 8 FLEX I/O modules per adapter
• Compatible with all FLEX I/O terminal bases and modules
• Status LEDs for network, module, and power diagnostics
• Facilitates real-time I/O data exchange with Logix controllers
• Electronic keying and web-based diagnostics support

Technical Specifications

• Network Protocol: EtherNet/IP
• Ethernet Ports: 2 x RJ45, 10/100 Mbps, auto-sensing
• Supported Topologies: Star, Linear, Device Level Ring (DLR)
• Max Modules: 8 FLEX I/O modules
• Power Supply: 19.2–31.2V DC
• Power Consumption: 4.2 W max
• Isolation Voltage: 50V (continuous, basic insulation)
• Mounting: DIN rail
• Operating Temperature: 0°C to 55°C
• Certifications: UL Listed, CE, CSA, RoHS, EtherNet/IP Conformance, Class I Div 2

Application Areas

• Distributed control systems in manufacturing, food, and packaging industries
• High-availability networks using DLR redundancy
• Remote I/O panels and modular machine designs
• OEM equipment requiring EtherNet/IP integration
• Real-time I/O data collection for SCADA and MES systems

Advantages

• Enables high-speed, deterministic control over EtherNet/IP
• Dual-port design supports flexible and redundant topologies
• Modular expansion reduces wiring and simplifies design
• Ideal for modern Ethernet-based automation systems
• Seamless integration with Rockwell Automation platforms and Studio 5000