Renishaw Probe MP7000

This is the first time I am trying to use a Renishaw Probe here is the program it works but I have no idea how can someone explain.


N0001 (ALUM. AIR ELEVATOR BASE.)
N0002 (534-002 OP2 )
N0003 (REVISED ON )
N0004 (MAT:....ALUMINUM CASTING)
N0005 (PROGRAM IS AT PEAK S.F.M)
N0006 (CYCLE TIME:0 MIN.00 SEC.)
N0007 G00 G90 Z20.
N0008 X-10. Y20.
N0009 M01
NAT20 (.2360" DIA. LED PROBE)
N2000 M06 T20
N2001 G15 H01
N2002 G56 H20
N2003 G00 X0 Y0
N2004 Z1.0
N2005 Z-1.25
N2006 M127
N2007 CALL OO10 PMOD=7 PDI=1.8
N2008 CALL OO20 PHN=VACOD PX=0
N2009 CALL OO20 PHN=VACOD PY=0
N2010 G00 Z20. M19
N2011 X-10. Y20.
N2012 M01
NAT15 (1/4" CARBIDE END MILL .2500)
(4 FLUTE CENTER CUTTING 1" OF FLUTE)
N1500 M06 T15
N1501 G15 H01
N1502 G56 H15
N1503 M03 S2500
N1504 G71 Z1.0 M08
N1505 NCYL G81 Z-.75 R.1 F10. M53
N1506 CALL OLOC1
N1507 G00 G80 Z20. M09
N1508 X-10. Y20. M05
N1509 M19
N1510 M30
(********* SUB PROGRAM ********)
OLOC1 (1/4" WIDE SLOT LOCATIONS)
BHC X0 Y0 I1.8325 J22.5 K8
BHC X0 Y0 I1.8025 J22.5 K8
BHC X0 Y0 I1.7725 J22.5 K8
BHC X0 Y0 I1.7425 J22.5 K8
BHC X0 Y0 I1.7125 J22.5 K8
BHC X0 Y0 I1.6825 J22.5 K8
BHC X0 Y0 I1.6525 J22.5 K8
BHC X0 Y0 I1.6225 J22.5 K8
BHC X0 Y0 I1.5925 J22.5 K8
BHC X0 Y0 I1.5625 J22.5 K8
BHC X0 Y0 I1.5325 J22.5 K8
BHC X0 Y0 I1.5025 J22.5 K8
BHC X0 Y0 I1.4725 J22.5 K8
BHC X0 Y0 I1.4625 J22.5 K8
RTS
(********* END OF SUB *********)