Hi Darren,

yes, that is a often reasen becaus the simulation works only with the correkt timing with time parameters high enough...So test your program at a real LOGO!

But please remember my second tap. It means: if I1 is high, then the cnt pin of the timer in On and so you get a 1. count ---> and a wrong result. Second is, that for time measurements it is good to use the inverted pin inv of the puls generator...If the generator is put on and of the generator set then a count in the middle of the timebase and that makesthe timemeasure errors in the middle to zero..

Best regards
Betel