Advanced Search

o<touchoff> sub
(#1 pierce height, #2 pierce delay, #3 cut height, #4 switch offset)
F500
G38.2 Z-200 (Probe to find the surface)
G38.4 Z50 (Probe to find the switch open)
G91
G1 Z#4 (Raise up to Offset of switch)
G90
G92 Z0 (Set Z0)
G1 Z#1
M3 S1
M66 P0 L3 Q5 (Wait for Arc OK from Torch)
G4 P#2 (Pause for pierce delay)
F500
Z#3 (goto cut height)
o<touchoff> endsub
M2

if you don't have dev installed open a terminal and say

sudo apt-get install linuxcnc-dev

to install open a terminal and cd to where the file is and use the following command

sudo comp --install thcud.comp

Example terminal session
john@zotac:~$ cd linuxcnc/thcud
john@zotac:~/linuxcnc/thcud$ sudo comp --install thcud.comp
[sudo] password for john: 
make KBUILD_EXTRA_SYMBOLS=/usr/realtime-2.6.32-122-rtai/modules/linuxcnc/Module.symvers -C /usr/src/linux-headers-2.6.32-122-rtai SUBDIRS=`pwd` CC=gcc V=0 modules
make[1]: Entering directory `/usr/src/linux-headers-2.6.32-122-rtai'
  CC [M]  /tmp/tmpcdtSzo/thcud.o
  Building modules, stage 2.
  MODPOST 1 modules
  CC      /tmp/tmpcdtSzo/thcud.mod.o
  LD [M]  /tmp/tmpcdtSzo/thcud.ko
make[1]: Leaving directory `/usr/src/linux-headers-2.6.32-122-rtai'
cp thcud.ko /usr/realtime-2.6.32-122-rtai/modules/linuxcnc/
john@zotac:~/linuxcnc/thcud$