SiteLINK 3D advanced communications management system from Topcon Positioning Systems works with 3D-MC grade controls. The system can track various machines, and the data can be used to track productivity based on application and material, the company says. Plan revisions and related files can also be exchanged. Users can remotely troubleshoot machines, and can view online the machine and fix machine-control problems without being on the site. Adding SiteLINK to a 3D machine is accomplished by adding a modem.