pulse and sub routine
hi,
i got a subroutine call when MB 0 is on. In this subroutine i want to catch a falling edge of MB1.
if i set MB 0 then i set MB1. Then i reset MB 0
the subroutine isn't call anymore. I now reset MB1.
When i set MB0 again i call the subroutine and then the falling edge is "activate". Is this a normal behaviour?
i first thought that the rise and fall edge where decided at the start of the scan cycle? but it seems it is net dependent !
It's maybe an rfc something rule but i am not aware e
Hi Damian,
How transition contact works?
Behind the transition "contact", in fact there are 3 more internal bit registers - one for P contact, one for N contact and one for "buffer". That's why the number of transition contacts is limited.
When the scan comes to specific transition contact (P or N), it compares the value of the linked to this contact bit (let's say MB0) with the value of the buffer.
If:
1. bit = 0 & buffer = 0 -> P = 0 and N = 0 no transition detected
2. bit = 1 &am
