both edges

BIT    BIT_PREV            POSITIVE

----||----|\|-----------------------()

BIT    BIT_PREV            NEGATIVE

----|/|----| |-----------------------()

BIT                    BIT_PREV
----||--------------------()

and you can for example use not displayed day of week or ms to indicate edge in log without using additional bits

the above code gives one shot edge (negative and positive)

DT is a byte structure:
Byte 0: Year [90..89->1990..2089]; Byte 1: Month [01..12]; Byte 2: Day[1..31];
Byte 3: Hour [0..23]; Byte 4: Minute [0..59]; Bytes 5..7: s, ms and day of week

Byte 7 (day of week i.e. Monday, ...) - you can overwrite it with for example
1 for button pressed and 2 for button released

and display date / time without time of day then use time of day byte to signal operation performed

pankaj_054

I tried to monitor program in variable table  and data block but I cant ,

As I initially suspected but checked your project to assure myself... It's hard task to monitor a block which doesn't exist.

BTW, you didn't follow sequence of LAD blocks as it was presented.