What software tool can be used to visualize network diagnostics?

RS Linx is the correct choice for visualizing network diagnostics because it is specifically designed for communication and network management within Rockwell's automation architecture. It provides real-time visualization of the network connections and enables users to troubleshoot communications issues by showing device status, connection information, and diagnostic data. This is particularly useful for identifying problems such as connection errors, device conflicts, or network configuration issues.

The other tools mentioned have different primary functions: FactoryTalk View focuses on creating human-machine interfaces (HMIs), Logix Designer is used for programming and configuring ControlLogix controllers, and Motion Analyzer is tailored for motion control applications. While these tools may interact with the network, they do not provide the specialized diagnostic capabilities that RS Linx does for monitoring network health and troubleshooting communication issues.