; loadtool: with options for G43 and H

o<loadtool> sub
(not_a_subfile)
   #<toolno> = #1
  #<use_g43> = #2
#<h_for_g43> = #3
  #<verbose> = #4

o<l0>      if [#<toolno> EQ 0]
             ;Uncomment next 4 lines to require a nonzero toolno
             ;(print, loadtool: EXIT: toolno required not 0)
             ;(debug, loadtool: EXIT: toolno required not 0)
             ;(AXIS,notify, loadtool: EXIT: toolno required not 0)
             ;m2 (quit)
             (print, loadtool: Warning: toolno is 0)
             (debug, loadtool: Warning: toolno is 0)
o<l0>      endif

o<l1>      if [#<use_g43> NE 0]
o<l11>       if [#<h_for_g43> EQ 0]
o<l12>         if [#<verbose> NE 0]
                 (debug, loadtool:G43 noH)
o<l12>         endif
               T#<toolno> M6 G43
o<l11>       else
o<l13>         if [#<verbose> NE 0]
                 (debug, loadtool:G43 H#<h_for_g43>)
o<l13>         endif
               T#<toolno> M6 G43 H#<h_for_g43>
o<l11>       endif
o<l1>      else
o<l14>         if [#<verbose> NE 0]
                 (debug, loadtool:no G43)
o<l14>         endif
               T#<toolno> M6
o<l1>      endif

o<loadtool> endsub
;G43 without an H word uses the currently loaded tool from the last Tn M6.
;G43 Hn uses the offset for tool n.
;Note
;    G43 H0 is a little special. Its behavior is different on random tool
;    changer machines and nonrandom tool changer machines
;
;       On nonrandom tool changer machines, G43 H0 applies the TLO of the
;       tool currently in the spindle, or a TLO of 0 if no tool is in the spindle.
;
;       On random tool changer machines, G43 H0 applies the TLO of the tool T0
;       defined in the tool table file (or causes an error if T0 is not defined
;       in the tool table).