Hello, we have recognized your frequency output usage problem. With next DASYLab NI-DAQmx driver release it's possible to define the NI-DAQmx task name also with a Global String. Then you can define a number of frequency output tasks under MAX and choose one of the tasks with a Global String with start from worksheet. A direct parameter setting from frequency or High / Low time windows over DASYLab modul inputs are not planed and also for technical reasons not possible.