Dear all,
I want to use a negative transition input signal. I use the PD for my single scan signals for lo to hi transitions. Now I am looking for hi to lo transition. I saw an instruction called STRNB from direct soft help and that would have been perfect but unfortunately this instruction is not available for dl440 which is the cpu I use. My question is is there a clean way to build a hi to low transition? I tried use latch , set. rst but not too clean. Can i use PD somehow backwards as a ND.
Thanks
I want to use a negative transition input signal. I use the PD for my single scan signals for lo to hi transitions. Now I am looking for hi to lo transition. I saw an instruction called STRNB from direct soft help and that would have been perfect but unfortunately this instruction is not available for dl440 which is the cpu I use. My question is is there a clean way to build a hi to low transition? I tried use latch , set. rst but not too clean. Can i use PD somehow backwards as a ND.
Thanks