Allen-Bradley 1794-AENTR Flex I/O Redundant Ethernet Adapter Module

Technical Specifications Breakdown

Key parameters for the 1794-AENTR are listed below for quick reference:

Industry Applications

In process control, the 1794-AENTR reduces cabling costs by using a single Ethernet cable for both control and data collection. For discrete manufacturing, its support for linear and ring topologies minimizes network downtime, directly improving operational ROI. The redundant media capability ensures continuous communication even if one path fails, avoiding costly production stoppages.

Installation & Setup Guidance

Mount the adapter on a DIN rail in a clean, dry location. Use stranded copper wire rated at 75 °C (167 °F) or higher, with size 0.34…2.5 mm² (22…12 AWG) and maximum insulation of 1.2 mm (3/64 in.). Connect a 24 VDC SELV/PELV-compliant power supply to the power terminals. Configure the IP address, subnet mask, and optional gateway before network operation. No network scheduling or routing tables are required.

Maintenance & Reliability

The module includes bi-color LED indicators for Module, Network, Link1, and Link2 status. Green indicates normal operation; red signals a fault. For Link LEDs, flashing yellow means 10 Mbps, green means 100 Mbps. Periodically inspect the DIN rail mounting and cable connections for tightness. The open-style enclosure requires protection from contaminants and moisture.

Redundant Ethernet Adapter for High-Availability Networks

The Allen-Bradley 1794-AENTR is a Flex I/O dual-port EtherNet/IP redundant media adapter module. It is designed to connect a Flex I/O rack to a central Ethernet-enabled controller, enabling high-availability network topologies like Device Level Ring (DLR). By supporting up to eight (8) Flex I/O modules, this adapter consolidates distributed I/O into a single, cost-effective communication node, reducing wiring and installation expenses.

Compatibility & Integration

This adapter communicates with EtherNet/IP-enabled controllers such as ControlLogix and CompactLogix. The built-in switch enables high-availability network designs without additional hardware, reducing total cost of ownership.

Selection Guide & Purchasing Advice

When selecting a communication adapter, consider the network topology and redundancy requirements. For lifecycle status and availability, please verify with AutoDCSTech before ordering. AutoDCSTech stocks genuine Allen-Bradley modules to ensure reliable supply.