18
Logic Confi gurator
Now store your program to the Power Focus and test it by working
the Job. You might not be quite happy with the result. Why?
1. The Job OK signal is a ”long” internal signal, staying active until
the next Job is activated. The high Job OK signal on the S1 input
prohibits the output from going low. The solution could be to
convert the fl ank ”low to high” of Job OK into a pulse. So let’s
add a Timer TP gate
2. The same problem could occur from the ”button push”. We could
for example get a bouncing signal from a shaky team leader. So
let’s convert the fi rst fl ank also of this signal into a well defi ned
pulse, using a Timer TP gate. See the following illustration
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