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Bit will not set in ladder


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Hello 

Can anybody help me with the problem i am having. I have 2 almost identical net-s, one working the other not. They both set O80 on for the duration of the timer. Net 3 works, but net 2 will not set the output ON. The rest of the net is working. After the timer expires the bit resets like it should. Only problem is the O80. I tried changing it with something else (other output, a MB), but it still wont turn on. I know i must be overlooking something extremely simple, but i cant find it.

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