Allen-Bradley 1794-AENT EtherNet/IP Adapter Module

Description

Allen-Bradley 1794-AENT EtherNet/IP Adapter Module

Product Dimensions：

The Allen-Bradley 1794-AENT is a high-performance EtherNet/IP Adapter Module from the FLEX™ I/O family. It serves as a communication gateway, interface, and power link between a centralized controller (such as a ControlLogix or CompactLogix PLC) and distributed FLEX I/O modules over a standard Ethernet network.

Product Detailed Description

The 1794-AENT module mounts directly onto a terminal base at the remote location. It passes control data from the master controller to up to eight FLEX I/O modules mounted on the same DIN rail. It supports 10/100 Mbps communication and acts as a bridge, translating high-speed EtherNet/IP packets into the backplane communication protocol required by the I/O modules.

Technical Parameters

Product Advantages

• Reduced Wiring Costs: By placing I/O modules closer to the field sensors and actuators, it eliminates long, expensive multi-conductor cable runs back to the main control panel.
• Modular and Scalable: The FLEX I/O system allows you to mix and match digital, analog, and specialty modules on a single adapter to meet specific application demands.
• Standard Network Infrastructure: Operates over standard, off-the-shelf Ethernet cables and switches, simplifying network architecture and lowering deployment costs.
• Web-Based Diagnostics: Includes an embedded web server that allows engineers to view diagnostic information, module status, and network statistics via a standard web browser.

Important Considerations & Precautions

• Power Budgeting: The 1794-AENT provides up to 640 mA of current to the backplane (FlexBus). You must calculate the total current consumption of your 8 attached modules to ensure they do not exceed this limit. If they do, an expansion power supply is required.
• IP Address Configuration: The module ships with DHCP enabled by default. You must use Rockwell’s BOOTP-DHCP Tool or the hardware thumbwheels (if applicable to the exact hardware series revision) to assign a static IP address before deployment.
• Firmware Compatibility: Ensure the module firmware matches the electronic data sheet (EDS) file installed in your Studio 5000 Logix Designer software to avoid configuration mismatches.
• Network Segregation: To maintain deterministic I/O control, isolate the automation network traffic from the corporate enterprise network using managed switches and VLANs.

Product Applications

The 1794-AENT is widely used for distributed control across various automated sectors:

• Conveyor and Sorting Systems: Managing localized sensors and drives across expansive distribution centers or airport baggage handling systems.
• Water and Wastewater: Interfacing with distributed pumps, valves, and flowmeters located at different treatment stages across a large facility.
• Manufacturing Assembly Lines: Connecting distributed I/O blocks on robotic work cells back to a central master PLC.
• Food & Beverage Processing: Monitoring temperature, pressure, and digital interlocks in modular packaging or mixing stations.

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