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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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124 Timer and Counter <strong>Instructions</strong> (TON, TOF, RTO, TONR, TOFR, RTOR, CTU, CTD, CTUD, RES)Description:When enabled and the .CU bit is cleared, the CTU instructionincrements the counter by one. When enabled and the .CU bit is set,or when disabled, the CTU instruction retains its .ACC value.rung condition incount-up enable bit (.CU)count-up done bit (.DN)presetcounter accumulated value (.ACC)16636The accumulated value continues incrementing, even after the .DN bitis set. To clear the accumulated value, use a RES instruction thatreferences the counter structure or write 0 to the accumulated value.Arithmetic Status Flags:Fault Conditions:not affectednonePublication 1756-RM003I-EN-P - January 2007

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