Hi to all. I'm new to the site but what brings me here is this: I'm just learning how to program in RSLogix and I'm practicing with this program called LogixPro Simulator. I'm doing the door exercise number 4 for those of you familiar with the program. I can't seem to figure out how to program the door to stop opening when I hit the close pb and stop closing when I hit the open pb. What takes place now is when the door is opening and I hit the close pb, the door starts closing. There is no halt to the door. Same goes for the door closing when I hit the open pb. I've tried timers and one shots but still not right. Is there someone out there familiar with the door exercise #4 in LogixPro?