The 1794-AENT serves as a vital communication bridge for distributed control systems. This Flex I/O adapter links your I/O rack directly to a central Ethernet-enabled controller. It supports a wide input voltage range from 19.2 to 31.2 VDC for reliable operation. This compact module allows installation of up to eight discrete or analog I/O modules. It represents a cost-effective solution for implementing a distributed I/O architecture.
Product Procurement & Buyer Guide for 1794-AENT
This section helps procurement managers and engineers select the right hardware. The 1794-AENT uses a single RJ45 port for Ethernet/IP protocol communication. It handles data transfer speeds of 10 to 100 Mbps across a linear topology. This adapter works seamlessly with ControlLogix, CompactLogix, and PLC-5 controllers. It solves the pain point of connecting remote field devices to a central processor.
You must verify the power supply requirements before purchasing this module. The device needs a nominal 24 VDC input with a range of 19.2 to 31.2 VDC. It consumes a maximum of 550 mA at 24 Volts DC during operation. The module dissipates heat at a rate of 24.9 BTU/hr at 19.2V DC. Ensure your cabinet has sufficient airflow for this thermal dissipation.
The physical dimensions of this adapter are 3.4 x 3.7 x 2.7 inches. It weighs only 0.44 lbs, which simplifies mounting inside a panel. The unit mounts directly onto a standard DIN rail for easy installation. It supports a maximum Flexbus current of 640 mA for downstream modules. This open-style enclosure requires placement within a clean, dry environment.
Step-by-Step Installation Guide for 1794-AENT
Begin the installation by mounting the adapter onto a standard DIN rail. Ensure the rail is securely fastened within your electrical enclosure. The module snaps onto the rail without requiring any special tools. This mechanical step provides a solid foundation for the entire I/O bank.
Next, connect the power supply wires to the designated terminals. Use stranded copper wire sized between 22 and 12 AWG for this connection. The wire insulation must be rated for at least 75 degrees Celsius. Tighten the terminal screws to a torque of 0.8 Nm for a secure fit. This ensures a reliable electrical connection that prevents intermittent faults.
Then, plug a standard RJ45 Cat.5 Ethernet cable into the single communication port. Connect the other end of this cable to your network switch or controller. The adapter supports a linear topology for straightforward network wiring. Configure the network address using the thumbwheel switches on the module. You can also use a DHCP server for automatic IP address assignment.
Finally, install your Flex I/O modules directly to the right of this adapter. The module supports up to eight discrete or analog input and output modules. Check the module status indicator for a solid green light after power-up. The network status LED confirms a successful connection to the controller. This completes the basic setup for your distributed I/O system.
Logistics & Standard Packaging Details
- One (1) Allen-Bradley 1794-AENT Flex I/O Ethernet/IP Adapter Module
- Product documentation and installation guide for the 1794-AENT
- The unit ships in an anti-static bag to prevent electrostatic damage
- Express delivery shipping is available via FedEx, UPS, and DHL
