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If you left an offset that could explain why your box has shifted.

Jogging all axes in both directions makes them go the wrong direction now?

John

I can see nothing obvious that would change the directions of the motors.
Unless something changed in the HAL file.

You might look here...
wiki.linuxcnc.org/cgi-bin/wiki.pl?Coordi...t_what_should_you_do
and
wiki.linuxcnc.org/cgi-bin/wiki.pl?CoordinateSystems

As to the first question...

If I understand you what you are looking to do is set the coordinates for your work piece, just as John stated.
So in that case home your machine then jog to the start position of your work and "touch off" your x y z axis there.
All your g code will consider that location to be x0y0z0 as will your screen.
You could then jog to a new location and touch off there.

If your machine home position was originally x0 y0 before you touched off
G53 G0 X0Y0 will still bring you back to that original location.

Rick G

I havent placed any offsets that i know of..... where would i look? how would i remove them? bigjohn?

thanks for the INI feedback guys ! i had a feeling that is wasnt something i had done in there.

To give you some idea i am stuck in the top left hand corner of my milling table. I can phsyically move 2.5inch x,y in that corner with ALL IN NEGITIVE values before software stop is applied (red bounding box); if i go the other direction i hit my limit switches with POSITIVE values and is outside the red bounding box. this should be the other way around!!

for instance if i change the INI table values to exact middle of my table on all of my axes, the above is still true! only I have room to move before hitting soft limits (red bounding box).

In stepconf same and opposite arent bringing the gantry to the other corners either; for some reason they arent working. other wise it would be a simple solution of going opposite opposite same and using the inverse corner.

nothing comes easy... it was all working fine sunday until i restarted my computer.

if only i could find that setting that flipped for some god unknown reason

Did you follow the first link that Rick gave you?

Restarting your computer should not have any effect on your configuration.

John

yep tried the what to do if stuck section. nothing happened.

my movements are still in reverse that is negitive.

im currently trying something in stepconf and i will let you know if it works.

if not im still open to all your suggestions.