So, I did see that earlier, it CAN be used to zero Work Coords- but ONLY
if you use Bottom Datum. Many times, we use Top Datum.
If you just reassigned WC Z, then LinuxCNC should be able to see
lowest-Z is beyond the allowed Machine Coords automatically, but I have
doubts it could work- the file may not get reevaluted automatically when
WC Z is reassigned between the time Run is pressed and we actually start
user G-code.
However, Top Datum, that wouldn't apply at all. You can't reassign WC Z.
Danny
On 12/16/2017 3:02 PM, Jon Elson wrote:
On 12/16/2017 12:53 PM, Danny Miller wrote:
Every time you hit Start, before it starts the spindle or actually
runs any line of the user G-code, it jogs over to a tool height
sensor (THS) and probes for the installed tool height
If you did this like a homing move, only the tool height sensor sets
the Z home position, and the axis soft limits are such that MIN_Z =
0.0, then it would be impossible to cut into the spoil board.
Jon
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