Logix5000 Controllers General Instructions - SLAC Confluence

82 Bit Instructions (XIC, XIO, OTE, OTL, OTU, ONS, OSR, OSF, OSRI, OSFI)On any scan for which limit_switch_1 is cleared or storage_1 is set,this rung has no affect. On any scan for which limit_switch_1 is setand storage_1 is cleared, the ONS instruction sets storage_1 and theADD instruction increments sum by 1. As long as limit_switch_1 staysset, sum stays the same value. The limit_switch_1 must go fromcleared to set again for sum to be incremented again.Relay LadderStructured TextIF limit_switch_1 AND NOT storage_1 THENsum := sum + 1;END_IF;storage_1 := limit_switch_1;Publication 1756-RM003I-EN-P - January 2007