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« on: December 24, 2019, 04:59:12 PM »
My mistaking the vernacular....when I say extents, I’m really meaning the work envelope the CNC will travel within to execute the code. I do have both soft limits and mechanical limit switches on all three axes. When I fire up Mach, I’m referring to displaying the work envelope. In the hobby version, there are two tabs to click on showing the actual position and the “program” extents which I now gather as being the work envelope the code will move within. The numbers displayed in the (program extents) work envelope, are the ones which seem to carry an offset from one executed gcode to the next in spite of zeroing the displays for each axis before starting. It would seem I need to determine the x,y,z position of the work table from true home, set this up as a G54 offset and then use this before starting ? Thanks for your advice gents, a year ago, I knew zip about CNC....bear with me as I ascend the learning cliff. Looks like I have more reading to do..