For i = 3 To 12

If Cells(i + 1, 3) < Cells(i, 3) Then
Cells(i + 1, 3) = Cells(i, 3)
End If

If speed > Cells(i, 3) Then
speed1_l = speed1_h
speed1_h = Cells(i + 1, 3)

temp_l = temp_h
temp_h = Cells(i + 1, 13)

p_speed_l = p_speed_h
p_speed_h = Cells(i + 1, 14)


End If

If Cells(i + 1, 4) < Cells(i, 4) Then
Cells(i + 1, 4) = Cells(i, 4)
End If

If speed > Cells(i, 4) Then
speed2_l = speed2_h
speed2_h = Cells(i + 1, 4)

fir_pres_l = fir_pres_h
fir_pres_h = Cells(i + 1, 15)

sec_pres_l = sec_pres_h
sec_pres_h = Cells(i + 1, 16)


fir_cool_l = fir_cool_h
fir_cool_h = Cells(i + 1, 17)

sec_cool_l = sec_cool_h
sec_cool_h = Cells(i + 1, 18)


End If

Next i
以上程序为EXCEL文件中的宏定义，求诸位大侠指点一下，如何转换为S7 300程序，我想用SCL或者STL转换过来，但是初学，好多指定都不怎么会用，求诸位大侠指点指点。