DRO Problem-EL 400

[WobblyHand]

The cheap scales are all relative. Good stuff usually costs more.

 

[higgite]

Gotta ask the obvious... Are you setting your vise zero point while in ABS mode, not INC mode? When you turn the power off and back on, are you sure you’re in ABS mode, not INC mode, when looking for zero on your vise?

Tom

 

[RJSakowski]

I have a 20 y.o. Grizzly DRO which is essentially the same as the Easson, It can recover a reference datum through the recover function. The glass scales have an internal reference located at the midpoint on the scale. When the display is powered off, the position of the scale pickup relative to the internal reference is stored. If the scale is moved in during a power down instance, a stored absolute position can be recovered by pressing tthe REF button, selecting RECALL with the up/down arrows, pressing ENT, selecting the axis to be recovered, and sweeping the scale pickup across the internal at the midpoint on the scale reference position. When the axes readouts appear, the absolute position is restored.

 

[rwm]

Now today it is actually working correctly! I found better instructions on the DRO Pros site which I have attached.
I am still not sure if this was a glitch or operator error. It seems to me that I was doing it correctly.
This will be a real timesaver since I rarely move the vise.

 

[rwm]

I think I figured out what I did wrong originally. You have to do the home (internal) reference acquisition and the machine reference sequentially, at the same time for some reason. If you screw up the machine reference setting you cannot simply repeat it. You have to start all over with the home reference. It is not intuitively obvious why that would be. When done in order it captures the correct coordinates.
For example, my vise is at -1.870 on the X. Now when I reacquire the machine reference the display shows 1.870. So if I move the slide to zero, I am right there.