Alternative Method.

As soon as you start the program, use the gohome command before you select a sensor.
This will send the machine to the scale home position. Next, select a sensor, take a point in space,meas/point,f(pt1),0
translate the orgin
to this point and save the datum as "sethome".
You can now call this "sethome" coordinate
system at any time and tell the machine to goto,0,0,0.