It is available in four versions: Lite, Single Node, OEM and Gateway. Today, RSLinx Classic is still named RSLinx Classic and can be used for the purposes for which it was originally developed.
This is also the communication product RSLogix editors have used to upload/download to controllers and IO. RSLinx Classic is an OPC DA 2.x data server and is required for DDE and bridging through legacy networks like DH+.
Let’s look at what RSLinx rebranding means. Recently, Rockwell Automation® rebranded RSLinx® Enterprise to differentiate RSLinx Classic from RSLinx Enterprise.