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M91 Ladder Proofing


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I've got two portions of a project that are similar. One operates correctly and the other goes through the timing logic, but no output is fired. I'm not certain if I'm using the MB improperly or if there is some protocol I'm missusing. Can I send the ladder to someone or insert it here, somehow, for someone to review?

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  • MVP 2023

Do a screenshot and post it to an imaging hosting site such as photobucket.com. Then insert the link to your image in the post.

One way I use to see if logic is solving is to use a SET coil assigned to a test MB. If the coil doesn't get set, there's something wrong with the logic in front of it.

Joe T.

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  • MVP 2023

You've assigned Output 0 to a regular coil in network 11. Never, ever mix regular coils and SET and RESET on the same address. The regular coil will always win by definition.

You may want to change your logic to use an MB to do the SET/RESET dance and OR that with SB 41 on Output 0.

Joe T.

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