L DB19.DBB 8
OW W#16#0
JN a
L 1
T DB19.DBB 8

a: CALL FC 68
BHG_on_condition:=TRUE
BHG_stop :=M182.0
HW_to_mmc :=TRUE
inch :=DB10.DBX107.7
BHG_activ :=DB2.DBX185.1
chan_nr :=DB19.DBB8
BAG_nr :=MB181

A DB2.DBX 185.1
JC _ss
L DB19.DBB 22
OW W#16#0
JN yy
L 1
yy: T DB19.DBB 8

_ss: CALL FC 119
PoiXconf :="_db68".xconf_ch1
ChanNo :=DB19.DBB8
SpindleIFNo:=B#16#6
Mcp2 :=FALSE
FeedHold :=M50.0
SpindleHold:=M50.1

找了段程序没看明白 能帮讲解下吗