What do you mean with "binary step"?
it is a kind of variable, it is used when you have, for example, 5 variables and you want only 1 of them to be true, then the others will be false. When one of the others become true, the one who was true will change to false, etc...
Yes, you probably means variables of type S00.00 in AC31-50. To be honest, I don't know about such in AC500. Probably you have to create your own logic to do that.
I have another question, do you know if i can draw lines to link the function blocks?? i ve been programming and i cannot do it...i add control blocks to the inputs and outputs of them
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