初学者请教

下面这段程序看不懂,不是LAD又不是STL或FBD请高手指教
CALL "fill_app"
cnt2_app :=W#16#64
st_fill :=TRUE
RadiusStop :="RadialBackwardLimitSW"
RotateStop :="NegativeRotateLimitSW"
AixisStop :="AixisCloseLimitSW"
TailstockStop :="TailstockBackLimitSW"
PulldeviceStop :="PulldevcieBackLimitSW"
Back :=FALSE
RadialEncoderModulus :=4
AixisEncoderModulus :=4
RotateEncoderModulus :=1
CurrentRadialPosition:="BackSticherRadialEncoder"
CurrentAixisPosition :="BackSticherAixisEncoder"
CurrentRotatePosition:="BackSticherRotateEncoder"
ReadActChannel :=M1.3