Solution
You can find the download link for LabVIEW DSC Run-Time System and Development System on the common LabVIEW DSC Download Page . You will need to select the year of LabVIEW DSC you want to download as well as the Included Edition of Runtime.
Online downloads of the LabVIEW DSC Run-Time System is only available for versions 2017 and newer. If you need a version of the LabVIEW DSC Run-time System before 2017, please reach out to NI Support at https://www.ni.com/en/contact-us.html to request the desired installer.
Note: The LabVIEW Datalogging and Supervisory Control Runtime available on this download page is the DSC Run-Time System (RTS) used on deployment computers. It is different from the "LabVIEW DSC Runtime" component that appears in the LabVIEW Installer Builder's Additional Installers list.