Allen-Bradley 1734-AENT POINT I/O EtherNet/IP Communication Adapter Module

Product Overview

The 1734-AENT is a high-performance communication interface designed for the Allen-Bradley POINT I/O system. It serves as a high-speed gateway between a centralized controller (such as ControlLogix or CompactLogix) and distributed I/O modules over an EtherNet/IP network. By facilitating the real-time exchange of I/O data and diagnostic status, the 1734-AENT allows for highly scalable, distributed control architectures. Its compact DIN-rail mount design and single 10/100 Mbps RJ45 port make it an ideal choice for star or tree network topologies where localized wiring reduction and efficient cabinet space utilization are prioritized.

Technical Specifications

The 1734-AENT provides a robust backplane power supply and deterministic communication parameters for industrial automation.

• Manufacturer: Rockwell Automation / Allen-Bradley

• Model Number: 1734-AENT

• Module Type: EtherNet/IP Adapter

• Communication Interface: 1 x RJ45 Port (10/100 Mbps, Auto-negotiation)

• Duplex Modes: Full or Half-duplex (Auto-detect)

• Input Voltage Range: 10V to 28.8V DC (24V DC nominal)

• POINTBus Output Current: Max 1.0 A @ 5V DC

• Inrush Current: Max 6 A for 10 ms

• Maximum I/O Capacity: Up to 63 POINT I/O modules (current limit dependent)

• Isolation Voltage: 50V (continuous), Basic Insulation Type, Network to System

• Status Indicators: 3 Bi-color LEDs (Module, Network, POINTBus status)

• Dimensions (H x W x D): 76.2 x 54.9 x 133.4 mm

• Operational Temperature: -20°C to +55°C

• Enclosure Type: Open-style (Designed for cabinet mounting)

Key Functional Features

• Deterministic Messaging: The 1734-AENT supports both implicit (I/O) and explicit (messaging) connections, ensuring that time-critical process data receives priority across the EtherNet/IP fabric.

• Flexible Addressing: Integrated thumbwheel switches allow for manual IP address configuration (192.168.1.xxx) without the need for specialized software, while BOOTP/DHCP protocols remain available for dynamic assignments.

• POINTBus Management: The adapter effectively manages the internal communication and power distribution for the POINTBus, supporting up to 63 expansion modules provided the 1.0 A backplane limit is not exceeded.

• Scalable Architecture: By utilizing the 1734-AENT, engineers can place I/O racks directly at the sensor level, significantly reducing copper wiring runs and simplifying field maintenance.