jared - 2020-12-22

Excuse me I don't speak english very well. I am discovering Codesys and I am trying to measure the time between two events. My main program is in LD but I can create function blocks with ST.
I already saw some programs using the function SYS_TIME but Codesys doesn't recognize this function when I use it.
Do you have any idea that could help me ?
Thank you