The Allen-Bradley 1788-CNCR is a ControlNet daughtercard engineered to enable communication between a host device and ControlNet network systems. This adapter can be installed to support either linear or redundant ControlNet architectures, allowing flexible configuration options for industrial automation networks. It features dual coaxial cable ports and one RJ45 Network Access Port (NAP), which may facilitate easy network access and diagnostics. The 1788-CNCR also includes built-in LED indicators for I/O, module, and network status, which can help monitor communication health and system performance. In North America and Europe, this ControlNet daughtercard may be used in distributed control environments where stable, high-speed data exchange and reliable connectivity are required.