We have a microscope micropositioning stage from madcity labs, like so http://www.madcitylabs.com/microstage.html. This is supplied with a NI PCI 7334 motion control card and external unit which houses the stepper motor controller and electronics for the encoders. This is all up and running correctly - however the labview VI and exe provided steps the motors in open loop. This has been accompanied by some error (as much as 5 micrometers) between the commanded position and the position reported by the encoders. I understand how the open loop control labview VI works. What I would like to do is take advantage of the encoders reported values on order to close the loop and step the motors until they are within a predefined distance of the desired position. Because I am new to labview I'm not sure how to go about this and was hoping to find perhaps example labview 'code' or even complete VIs that achieve this kind of thing. Thanks!
