1794-AENTR Allen-Bradley Flex I/O Dual Port Ethernet/IP Adapter

Product Overview

The 1794-AENTR from Allen-Bradley is a Flex I/O communication adapter. It mounts on a DIN rail and features two Ethernet ports. These ports support up to 8 I/O modules. The adapter enables connection to a central Ethernet controller. It supports 10/100 Mbps communication rates. Power requirements range from 19.2 to 31.2 VDC. The 1794-AENTR uses EtherNet/IP protocol. It works with both linear and ring topologies for high availability.

Application Scenarios

This adapter fits in industrial automation systems. It is ideal for remote I/O applications. Use it in manufacturing, process control, and material handling. It supports Device Level Ring (DLR) networks. This ensures reliable data communication even if one path fails. The 1794-AENTR is suitable for environments with moderate vibration and shock.

Technical Specifications

Communication ports: two RJ45. Protocol: EtherNet/IP. Data rate: 10/100 Mbps. I/O capacity: 8 modules. Input voltage range: 19.2–31.2 VDC. Power consumption: 500 mA / 400 mA at 24 VDC. Inrush current: 18 A for 2 ms. Operating temperature: 0 to 55 °C. Storage temperature: -40 to 85 °C. Vibration: 5 g at 10–500 Hz. Shock: 30 g peak. Enclosure: open-style. Wire size: 0.34–2.5 mm² (22–12 AWG). Flexbus current: 640 mA at 5 VDC.

Installation & Maintenance Guide

Mount the 1794-AENTR on a DIN rail. Ensure the location is free from excessive vibration. Use stranded copper wire rated at 75 °C. Connect an external 24 VDC power supply. Verify the voltage range includes 5% AC ripple. The LED indicators help with troubleshooting. Module and Network status LEDs show green for normal. Link LEDs flash yellow for 10 Mbps and green for 100 Mbps. Regular inspection of connections is recommended.

Packing List

1 x 1794-AENTR module. No mounting hardware is included. The module is shipped in an anti-static bag. For installation, you need a DIN rail and an external power supply. Use standard RJ45 Cat.5 cables for Ethernet connections. Shipping is via FedEx, UPS, or DHL.