exact function of contact "N".

[paris 0]

hello I would like to understand the exact function of contact "N".(microwin) in this example (see drawing). if I0.0 = "1" and I0.1 = "1" = 0 QO.0 if I0.0 = "1" and I0.1 = "0" = 0 Q0.0 If I0.0 changes from "1" to "0" and I0.1 = "0" Q0.0 = 0 if I0.0 is a "1" and it returns "0" if I0.1 = 1, in this case only Q0.0 goes to "1"? E0.1 contact has no effect on contact "N"? ...contact "N" or "P" is active at each PLC cycle or only once ? thank you Edited 7 Apr 2013 by paris

[Moggie 17]

If I0.0 changes from "1" to "0" AND I 0.1 = "1" Then Q0.0 is on for One Scan of the PLC Program. In all other cases Q0.0 is off The Negative Transition contact allows power to flow for one scan for each on-to-off transition. Edited 7 Apr 2013 by Moggie

[paris 0]

thanks Sparky Edited 7 Apr 2013 by paris