how can I limit Analog Output to positive only?

[jy189]

Hi everyone,

I'm using PXI 7350 and UMI 7774 for controlling a DC brushless motor,

the problem is that the drive for the motor only supports positive voltage input ( to adjust motor's velocity).

So how can I limit the output voltage to positive ?

 I'm new to labview and I have been confused by this problem for a long time , so it will be geat if there's any example vi of that !

Thanks for any help !

[Highland_Controls]

What are you using for feedback?  If you are only moving in one direction, then you don't have to worry about limiting the analog to positive, the controller will take care of that.