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![]() ![]() Also there is a gap between the end of the chute and the FULL level in the box (there will be a small amount of material falling through the air AFTER the slide gate CLOSES). Notice that there is a gap between the solenoid-operated slide gate and the end of the chute (there will be material in the chute AFTER the slide gate CLOSES). HINT #2: If you really want absolutely no spills, you should examine the silo discharge chute very closely. To get around that obstacle and run with no spills takes some more-advanced techniques than would normally be required. This LogixPro Exercise was programmed by the creator to produce spills any time a program switch is changed, or the sceen focus goes from one screen to another, or any thing else that a student might do while running the simulator. HINT: If I were you, I would stop looking at a non-working progarm, and instead look at one that has been tested and does work, and does not allow ANY spills under ANY condition. You will not be able to do it without adding some similar logic to your program. However, the devious course instructors figured out how to add extra student work by requiring that Exercise #3 be programmed to allow the selector switch to be operated WHILE RUNNING, WITHOUT SPILLS! To do that, see Post #14, Rung 001. Most processes are shut down while such changes are made. The original exercise was not designed to switch the operating mode while RUNNING. ![]() Now you have described the problem concisely. This happens when i switch from B to a when prox.
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