What you will need to do is input individual target positions for your board. These target positions can be created using the LabVIEW sine wave function, and then placed in a buffer to be executed by the board. To keep the same frequency, just continue the same parameters for the LabVIEW sine wave function, and the place output on the buffer. To change the frequency, just change the parameters for the Sine Wave generator. For an example of doing a buffered move, where new target positions are continually added take a look at the shipping example under the countours llb titled Buffered Contouring (Rose).vi.