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The output values the logic writes during a scan. The real outputs are updated from this copy at the end of the scan, all together.

One scan: read all inputs, run the rungs from top to bottom, write all outputs, then start again.1Read inputsAll inputs,all at once2Run rungsTop to bottom,left to right3Write outputsAll outputs,all at onceThen again. The Scan setting (20 ms) sets how often.

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