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hou need ot make a buffer - another MI. At power up or start specified process, you store the value of MI in thhis buffer (ordinary Store direct). Next scan (net before the one described above) you compare the value of MI with the one of the buffer (Compare function - not equal) and if this is true, activate a bit. Then, the next net (as desctibed above, you will store the curent MI in the buffer. This way the next scan you can compare and locate changes again.

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