我是一名大二的学生，初学西门子３００　下面两段程序的功能我看不懂，请教老师们，能告诉我下面两段程序的功能吗，谢了！
L DW#16#35
T MD 2
L 10
T MW 100
OPN DB [MW 100]

L L#10
T MD 104
A I [MD 104]
= DBX [MD 2]
A DBX [MD 2]
= Q [MD 2]




OPN DB 100
L P#DBX 0.0
LAR1
L P#M1.0
LAR2
L W[AR1,P#2.0]
T W[AR2,P#3.0]
ADX [AR1,P#4.5]
= [AR2,P#6.5]

L 256
SLD 3
LAR2

L PIW[AR2,P#0.0]
T W[AR1,P#6.0]