Currently actuators only support setting of a new position via setPosAbs and setPosRel. However, AerotechEnsemble support a free-run-mode where the axis simply move into a given direction without specificaion of a specific coordinate.
In the current state this can only be achieved with workaround-qualitz, i.e. by creating a custom-function to enable the free-run-mode. A more reliable and profound solution is required here.