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Author Topic: Is Z zero supposed to be saved in a saved fixture?  (Read 1461 times)

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Is Z zero supposed to be saved in a saved fixture?
« on: March 29, 2015, 06:05:13 PM »
I have a fixture, the default G54 at the moment.
When I load my Gcode the object appears in Mach3's tableview window at G54's X0,Y0 (about mid table).
However, although I had previously zeroed Z (at table height), this data appears not to have been saved.
If I hit "GoToZero", the machine head will go to G54's X0,Y0 as expected.  However the Z axis will then drive for the floor!  Not pleasing.
I'm OK as long as I  zero Z manually before hitting "GoToZero"

Also perplexing to me (because I'm new at this): When I open the Gcode, although the object's imported 0,0,0 axis appears at the right place on the table (the last G54), the DRO's and the cross hairs are way out off the table.
What works is this: I zero Z manually, perform "GoToZero",  and then zero both X and Y (in the DRO's).  Then the crosshairs are right, I'm 0,0,0 and the program is a go.

I'm sure I'm missing something here....

« Last Edit: March 29, 2015, 06:08:01 PM by s_tones »
Re: Is Z zero supposed to be saved in a saved fixture?
« Reply #1 on: March 29, 2015, 07:51:16 PM »

This shows what happens when I import my g-code object with its 0,0,0 axis.  The object resides at the G54 location as it should but the purple crosshairs jump off the table.  Crosshairs can be returned to the origin of the object by zeroing the X and Y DRO's.  Is this normal behavior?