I use a condition that will always be true (such as 1=1 or the reserved word True). Then by using a OneShot object you get a �high� pulse for the first �x� seconds this condition is true, which is when the process starts up (or the expression is edited). Since the condition never changes it�s state, the pulse will never occur again (unless you edit the expression). I hope my description isn�t making it seem confusing, it really is quite simple. You can create a new OneShot object or imbed an expression with the following:
OneShot (True, 00:01)
This will give a one second pulse when the process starts.