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JMP, LBL and MCR on a ControlLogix: Skipping Rungs, and Why MCR Is Not a Stop

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A routine listing showing rungs 8 to 17: a JMP on rung 8 skipping forward to the LBL on rung 11, an MCR zone opened on rung 12 by Line_Enable and Guard_Closed, an OTE, an OTL and a TON inside it, the unconditional closing MCR on rung 16, and an unaffected OTE on rung 17

JMP, LBL and MCR on a ControlLogix: Skipping Rungs, and Why MCR Is Not a Stop Rung 14 of a filling machine carries OTL Glue_Pot_On and it sits between two MCR instructions. Open the guard, the zone goes false, every OTE inside it clears to 0 — and the glue pot stays hot, because a … Read more

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