News & Events

Expanded Flex I/O range now includes Device Level Ring capabilities

With the addition of the Allen-Bradley 1794-AENTR Flex I/O Dual Port EtherNet Adapter, we can now give engineers greater flexibility for the creation of automation networks.


FLEX I/O offers all the functions of larger rack-based I/O without the space requirements. Its cost effectiveness, flexibility, modularity and reliability have made it the most popular distributed I/O platform with over four million modules sold.

FLEX I/O helps eliminate multiple long wiring runs, reduces terminations per point, decreases engineering and installation costs and time and substantially reduces downtime. It complements all processor platforms from Rockwell Automation for a distributed I/O solution.

The addition of the 1794-AENTR FLEX I/O Dual Port EtherNet Adapter adds Device Level Ring (DLR) capability to the FLEX I/O family. The adaptor prioritises network traffic to provide timely delivery of critical data and the use of an open standard (ODVA) allows third-party suppliers to develop compatible products.

DLR configurations allow users to create single, fault-tolerant networks, which provide resiliency with no additional hardware to implement. When used in linear configuration, linear Ethernet segments greatly extend the length of the application and there is no need to run cables from each device back to a centralised switch

FLEX I/O systems can communicate on EtherNet/IP, ControlNet, DeviceNet and many other open networks. Users can independently select the I/O, termination style and network to meet their application needs. Adapters and other components are available for adding to the system as user requirements change.

The benefits of using FLEX I/O are numerous and include:

• Reduced Space: Wire direct from sensor to terminal base and eliminate terminal strip
• Functionality: 4- through 32-point modules offer functions of larger rack-based I/O
• Increased Productivity: Easy configuration and setup of I/O modules using wizards speeds engineering and installation
• Reduced Downtime: Removal and Insertion Under Power (RIUP) and diagnostics
• Exceptional Choices: Over 90 catalogue numbers and a breadth of specialty modules meet the needs of a wide variety of applications
• Operation in Harsh Environments: Conformal coated and extreme environment rated modules.
• Network Flexibility: Communicates on EtherNet/IP, ControlNet, DeviceNet, Remote I/O and other open networks
• Improved Plant Operations: HART analogue modules pass through HART data to asset management software or controller for improved plant operations

For more information email us at: info_enews@ra.rockwell.com ref: Flex-AENTR