of cause you could use the F_TRIG or the R_TRIG fb in the ladder programming.
But at the moment I can't follow you, what you want to do. The both pictures are two different things.
If you want to do the logic in the way, like it is in the PC WORX picture, you have to set an additionally tempvariable like this.
The function like in your first picture work also fine in PC WORX.