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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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Chapter 14Special <strong>Instructions</strong>(FBC, DDT, DTR, PID)IntroductionThe special instructions perform application-specific operations.If You Want To Use This Instruction Available In These Languages See PageCompare data against a known, good referenceFBC relay ladder 480and record any mismatches.Compare data against a known, good reference,record any mismatches, and update thereference to match the source.DDT relay ladder 488Pass the source data through a mask andcompare the result to reference data. Thenwrite the source into the reference for the nextcomparison.DTR relay ladder 496Control a PID loop. PID relay ladderstructured text499479 Publication 1756-RM003I-EN-P - January 2007

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