Chris,
I do not have any sample code that I can send you, but I can tell you how to do it. First, in FieldPoint Explorer, right click on the FP-QUAD-510 @x and choose Edit This Device. Then click on Channel Configuration. In the Channel Commands box, press the button that says Create Item. This will create a channel named "Control @Ch0". You can then write to the "Control @Ch0" item as if it was a normal output. Anytime in your code that you write a value of 1 to the "Control @Ch0" item, it will reset Axis 0 (channels 0 and 4). To change which channel you are resetting, simply change the checkboxes before pressing the Create Item button.
Regards,
Aaron
LabVIEW Champion, CLA, CPI