EMC.var help

[helpmeout]

What is the emc.var file used for and can you change the numbers that are there. im thinking this is for home positions for each axis.I might be wrong, but some one explain this to me.I have my z axis that has a travel of 3.5 inches at the top where i put my home switch to the top of my table. I want to make this point to be -1.0. but i cant seem to change my configuration. this is so that when i place a part on my table i can make it at 0.0000 if i want.

[cncbasher]

var files are for emc values , home positions etc are stored in the config INI File

[jmelson]

Originally Posted by helpmeout What is the emc.var file used for and can you change the numbers that are there. im thinking this is for home positions for each axis.I might be wrong, but some one explain this to me.I have my z axis that has a travel of 3.5 inches at the top where i put my home switch to the top of my table. I want to make this point to be -1.0. but i cant seem to change my configuration. this is so that when i place a part on my table i can make it at 0.0000 if i want.

Assuming you are using the Axis screen GUI, you move to your 0.0 position and click
the "touch off" button on the screen. It asks you what coordinate you want to set the current
position to.

If you want your home position as determined by the switch to be coordinate -1.0,
you set that in the emc2/configs/.ini file [AXIS_2] section, by
setting HOME_OFFSET = -1.0

But, that just sets the MACHINE coordinates, what you most likely want is the workpiece coordinates, which you set with the touch off button. You can set the coords for whichever
axis is currently selected, and also set that axis coordinate for any one of the 9 workpiece
coordinate systems (G54 through G59.3)

Jon

[helpmeout]

that is what i want to do, thanks so much. I have been able to use the touch-off some today and was able to engrave some letters in some different pieces of wood.Boy am i having fun...