When a drive DTM is added in Unity DTM browser and the drive is connected to PLC over ethernet (Modbus TCP or Eth IP), then the autotuning can be executed from the vertical menu.
Parameter TUN (to execute autotuning) is not available in ATV DTM configuration.
Attached picture shows the menu to access autotuning. Right-click on Device in DTM browser, select Device menu-Additional functions-Autotune.

Released for:Schneider Electric India