Time Record in Siemens

Hi all,

I am using SFC1 (Read_Clk) function to read the time of the CPU, with no luck.

What I want is to record the time when a valve change its state.
and put that time in a report in WinCC

it will be somthing like that

valve1 Opened : 12:00 PM
Valve1 Closed : 01:00 PM

somewhere in the report in WINCC

Simply:
- When a valve goes 1 = capture the time of this event.
- Pass this time and print it in a report.
??????????


Could anyone help me or guide me to the right path please.

Thanks so much.