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What I'm looking for is a simple timer program for an Allen-Bradley SLC100/150 that will control a "traffic light". I just want to turn on 1 input, then three outputs will time in sequence to operate the traffic light e.g. output 1 on for 15 sec, then off with output 2 on for 5 sec., then output 3 on for 15 sec., and just have the cycle loop.