Allen-Bradley 1794-ACNR Flex I/O communication adapter is a high-performance ControlNet interface from the Rockwell Automation Flex I/O 1794 series, designed to enable fast and reliable network communication for industrial automation systems. The 1794-ACNR mounts on a DIN rail and features dual ControlNet ports, allowing implementation of a redundant ControlNet data highway for increased network reliability. It supports up to eight Flex I/O modules, providing flexible system expansion and seamless integration within distributed control architectures. Engineered for robust performance, the 1794-ACNR ensures stable, high-speed communication across connected Flex I/O modules.