The touchoff routine when you click on the 'Touch Off' and 'Tool Touch Off' buttons in the Axis GUI is built into the axis.py source code.
Code:
def touch_off_system(event=None, new_axis_value = None):
global system
if not manual_ok(): return
offset_axis = trajcoordinates.index(vars.ja_rbutton.get())
if new_axis_value is None:
new_axis_value, system = prompt_touchoff(
title=_("Touch Off (system)"),
text=_("Enter %s coordinate relative to %%s:") % vars.ja_rbutton.get().upper(),
default=0.0,
tool_only=False,
system=vars.touch_off_system.get()
)
else:
system = vars.touch_off_system.get()
if new_axis_value is None: return
save_task_mode = s.task_mode
vars.touch_off_system.set(system)
ensure_mode(linuxcnc.MODE_MDI)
s.poll()
linear_axis = vars.ja_rbutton.get() in "xyzuvw"
if linear_axis and vars.metric.get(): scale = 1/25.4
else: scale = 1
if linear_axis and 210 in s.gcodes:
scale *= 25.4
offset_command = "G10 L20 %s %c[[%s]*%.12f]" % (system.split()[0], vars.ja_rbutton.get(), new_axis_value, scale)
c.mdi(offset_command)
c.wait_complete()
s.poll()
o.tkRedraw()
reload_file(False)
ensure_mode(save_task_mode)
set_motion_teleop(1)
o.redraw_dro()
def touch_off_tool(event=None, new_axis_value = None):
global system
if not manual_ok(): return
s.poll()
# in case we get here via the keyboard shortcut, when the widget is disabled:
if s.tool_in_spindle == 0: return
if new_axis_value is None:
new_axis_value, system = prompt_touchoff(
title=_("Tool %s TouchOff"%s.tool_in_spindle),
text=_("Enter %s coordinate relative to %%s:") % vars.ja_rbutton.get().upper(),
default=0.0,
tool_only=True,
system=vars.touch_off_system.get()
)
else:
system = vars.touch_off_system.get()
if new_axis_value is None: return
save_task_mode = s.task_mode
vars.touch_off_system.set(system)
ensure_mode(linuxcnc.MODE_MDI)
s.poll()
linear_axis = vars.ja_rbutton.get() in "xyzuvw"
if linear_axis and vars.metric.get(): scale = 1/25.4
else: scale = 1
if linear_axis and 210 in s.gcodes:
scale *= 25.4
lnum = 10 + vars.tto_g11.get()
offset_command = "G10 L%d P%d %c[[%s]*%.12f]" % (lnum, s.tool_in_spindle, vars.ja_rbutton.get(), new_axis_value, scale)
c.mdi(offset_command)
c.wait_complete()
c.mdi("G43")
c.wait_complete()
s.poll()
o.tkRedraw()
reload_file(False)
ensure_mode(save_task_mode)
set_motion_teleop(1)
o.redraw_dro()
def set_axis_offset(event=None):
commands.touch_off_system(new_axis_value=0.)
So unless you are comfortable changing what is there you may be faster creating a custom pyvcp panel and add a button that calls your touchoff routine.
