DATE_TO_DINT，DT数据可以直接用其中的年月日啊，为么要放到DW0
Byte
Contents
Example

0
Year
B#16#93

1
Month
B#16#12

2
Day
B#16#25

3
Hour
B#16#08

4
Minute
B#16#12

5
Second
B#16#34

6
Two most significant digits of MSEC
B#16#56

7
(4MSB)
Two least significant digits of MSEC


B#16#7

7
(4LSB)
Day of week
1 = Sunday
2 = Monday
...
7 = Saturday
B#16#_5