There is provided a machine for processing workpieces. A front end of the tonneau cover is pivotally supported at the vehicle. Beyond the shroud, an electrical machine is provided by rotor projections which run in a channel in flux cores, with which excitor coils are associated. For example, the size allocated to a segmentation indication field determined for a first length of the protocol data unit is lower than the one determined for a second length of the protocol data unit, where the second length being higher than said first length, where the segmentation indication indicates in how many segments the protocol data unit is subdivided.