Greetings,

I'm trying to figure out how to automatically set work coordinates to zero after sending the spindle to a specific set of coords after the machine homes by inserting 2 lines in the home all section of ScreenScript.lua.

Ex: Press "Home X Y Z Axis" button --> Machine homes --> moves to some pre-set coordinates --> Zero's X Y Z WORK coordinates.

As you can see I added the following lines:

mc.mcCntlMdiExecute(inst, "G53 X12.4129 Y433.9433")  -- This line works
mc.mcCntlMdiExecute(inst, "G92 X0 Y0")        --This line doesn't work

G53 works as expected but G92 does not and the XYZ work coordinates do not change to zero.

If I run the G53 and G92 commands directly in the MDI window they both work as expected.

Any ideas why and how I can get this to work?

Thanks!

---------------------------------------------------------------
-- Ref All Home() function.
---------------------------------------------------------------
function RefAllHome()
   local inst = mc.mcGetInstance("Screen load script, RefAllHome()")
   local valEnable = mc.mcProfileGetInt(inst, "AvidCNC_Profile", "iConfigEnableSoftLimitsAfterHomed", 1)
   local valSimHome = mc.mcProfileGetInt(inst, "AvidCNC_Profile", "iConfigHomeXYSimultaneously", 0)
  local valCustomHoming = mc.mcProfileGetInt(inst, "AvidCNC_Profile", "iConfigCustHomingEnabled", 0)
  local msg = ""

   mc.mcAxisDerefAll(inst)  --Just to turn off all ref leds
   mc.mcAxisHomeAll(inst)
  coroutine.yield() --yield coroutine so we can do the following after motion stops
 
  if (valEnable == 1) then
    pf.EnableSoftLimits()
    msg = "Homing of machine is complete. Soft limits will now be enabled."
  else
    msg = "Homing of machine is complete."
  end
   wx.wxMessageBox(msg, "Homing")
   mc.mcCntlMdiExecute(inst, "G53 X12.4129 Y433.9433")
   mc.mcCntlMdiExecute(inst, "G92 X0 Y0")
end

G53 is an absolute unchangeable machine value that is set to zero by Mach3/4 after going to the machine home position.

G92 sets the fixture position.

G10 sets a new value in the selected fixture offset.

G52 sets a local fixture offset.

I figured it out. If it helps anyone, this is the scripting I added. Cheers!

GCode = ""
   GCode = GCode .. string.format("G53 X12.4129 Y433.9433\n")
   GCode = GCode .. string.format("G92 X0 Y0 Z0\n")
   mc.mcCntlGcodeExecuteWait(inst, GCode)