Gcode (- values)

Hey all.

I have tried to run gcode when I have - values on the x axis and y axis but linuxCNC errors with a warning message about unable to go to minus values.

Is this common practice or is there a way to go to minus values on the x and y axis.

Jason.

It is perfectly acceptable to use negative X and Y values. It is up your personal preference and how you configure your machine, whether or not negative values will be usable for you.
If you have not already read the parts of the manual pertaining to touching off and work coordinate systems.
wiki.linuxcnc.org/cgi-bin/wiki.pl?CoordinateSystems

What's the exact error message?

It sounds like the error I get when I've forgotten to home the axes and I try to run a program.