58 Program features Programming via parametersParameters can be set via• the control panel, as described in chapter The ACS850 control panel• the DriveStudio PC tool, as described in DriveStudio User Manual(3AFE68749026 [English]), or• the fieldbus interface, as described in chapters Control through the embeddedfieldbus interface and Control through a fieldbus adapter.All parameter settings are stored automatically to the permanent memory of the drive.However, if an external +24 V DC power supply is used for the drive control unit, it ishighly recommended to force a save by using parameter 16.07 Param save beforepowering down the control unit after any parameter changes.If necessary, the default parameter values can be restored by parameter 16.04Param restore.Note: By default, a selective list of parameters is shown by the drive panel orDriveStudio. All parameters can be displayed by setting parameter 16.15 Menu setsel to Load long. Application programmingThe functions of the firmware program can be extended with applicationprogramming. (A standard drive delivery does not include an application program.)Application programs can be built out of function blocks based on the IEC-61131standard. Some drive parameters are used as firmware function block inputs and cantherefore be modified also via the application program. Note that parameter changesmade via the application program override changes made via the DriveStudio PCtool.For more information, see• Application guide: Application programming for ACS850 drives(3AUA0000078664 [English]), and• DriveSPC User manual (3AFE68836590 [English]).Application program licensing and protectionThe drive can be assigned an application licence consisting of an ID and passwordusing the DriveSPC tool. Likewise, the application program created in DriveSPC canbe protected by an ID and password.If a protected application program is downloaded to a licensed drive, the IDs andpasswords of the application and drive must match. A protected application cannot bedownloaded to an unlicensed drive. On the other hand, an unprotected applicationcan be downloaded to a licensed drive.
