Parametric constraints locking down a point

[pmayerEFQ7L]

I am using the Parametric feature in AutoCAD 2013.  When I create a dimension parameter between two objects in the drawing, I would like to lock down the position of one feature and allow the other to move according to the changed parameter value.  Specifically I created a point at the origin (0,0) that I want to stay put.  I want other features to move relative to this origin point.  Sometimes however the point moves and the other features stays put. 

How do I lock down one feature to never move?  The reason I want the origin point to stay in place is because after doing all the adjusting of parameter values, I want to create a DXF drawing that is input into a turret machine, and I want my automation program to erase the point at the origin as the last step prior to saving the DXF.  If the point has moved, my automation software might miss the origin point it is trying to delete.

[john.vellek]

Hi @pmayerEFQ7L,

I see that you are visiting as a new member. Welcome to the Autodesk Community!

The first thing I would suggest is to place that item on a layer that is locked. Otherwise, I believe that constraints are really intended to establish relationships between drawing entities.

If you attach a sample drawing I am happy to see if I can find a method for you to do this. For instance, you could lock the distance of this object to another locked object.

Please select the Accept as Solution button if my post solves your issue or answers your question.

[pmayerEFQ7L]

Thanks for the reply.  After some more research I found that there is a lock button in the parametric menu that apparently allows me to lock the point.  It is working so far.  If it at some point causes more problems I will try what your suggest.

Thanks,