You do not need to download a specific "Lite" installer. The installer you download is a universal package for RSLinx Classic. When you install it, it will default to the version if you do not have a paid license key installed on your machine.
The version is free to download and use. It provides the essential "RSLinx Classic" interface that looks like a tree structure, allowing you to see the IP addresses of your CompactLogix or ControlLogix processors and verify that your cable is connected properly. rslinx classic lite download
Choose Direct Download to get the installer files directly through your browser. Key Features and Limitations You do not need to download a specific "Lite" installer