Mastercam Post Processor | Editing
fstrsel sm06 toolchng mcode 6 -1 Buffers allow your post to "remember" previous outputs. Example: Only output G28 on the first tool change, but not again until a new work offset is called.
ptlchg$ #Tool change pbld, n$, "T", t$, "M06", e$ pbld, n$, "G43", "H", t$, e$ # <--- ADD THIS LINE pbld, n$, "S", spindlspd, "M03", e$ ⚠️ Ensure t$ is the correct variable for your H offset (sometimes it is tloffno$ ). Edit #4: Changing Arc Format (R vs IJK) The Problem: Old Fanuc controls choke on IJK arcs (incremental center points). You want R values. Or, your newer Siemens wants IJK with sign. mastercam post processor editing
scoolant : "M08" #Flood The Problem: When machining on a rotary axis, your machine wants to spin 10,000 degrees instead of turning back 10 degrees. fstrsel sm06 toolchng mcode 6 -1 Buffers allow
use_rotm : 1 #Use rotary axis shortest direction? Change from 0 to 1 or vice versa depending on your machine’s preference. The Problem: Your post outputs the tool length offset (H) only on the first tool. If you restart mid-program, the machine forgets the offset. Edit #4: Changing Arc Format (R vs IJK)
Edit:
Modify ptlchg$ (Tool Change) block.
arctype : 0 # 0=IJK, 1=R, 2=signed R, 3=Unsigned R Change 0 to 1 for R.














