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Logix5000 Controllers General Instructions - SLAC Confluence

Logix5000 Controllers General Instructions - SLAC Confluence

Logix5000 Controllers General Instructions - SLAC Confluence

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486 Special <strong>Instructions</strong> (FBC, DDT, DTR, PID)ConditionRelay Ladder Actioncomparecompare.POS ≥compare.LENyescompare.POS = compare.LENgotoexitpagenoresult.DN = 1source[compare.POS] =reference[compare.POS]nocompare.FD bit is setexamine result.DNbitresult.DN bit is clearedyesresult.DN = 0compare.POS =compare.POS + 1result.POS < 0yesnoresult.LEN ≤ 0yesnocompare.ER bit is setmajor faultyesresult.POS >size of result arraygotoexitnopageresult[result.POS] = compare.POSnoresult.POS >result.LENyesresult.DN bit is setpostscanThe rung-condition-out is set to false.Publication 1756-RM003I-EN-P - January 2007

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