Logix5000 Controllers General Instructions - SLAC Confluence

64 Analog Alarm Instruction (ALMA)ExecutionThe tables below show execution action for Ladder Logic andFunction Block programming languages.Ladder LogicConditionprescanrung-condition-in is falserung-condition-in is truepostscanActionThe rung-condition-out is set to false. Alloperator requests, timestamps, and deliveryflags are cleared. All alarm conditions areset to OutOfAlarm and Acknowledged.The rung-condition-out is set to false.The rung-condition-out is set to true.The rung-condition-out is set to false.Function BlockConditionprescaninstruction first scaninstruction first runEnableIn is clearedEnableIn is setpostscanActionAll operator requests, timestamps, anddelivery flags are cleared. All alarmconditions are set to OutOfAlarm andAcknowledged.No action taken.No action taken.The instruction does not execute. EnableOutis cleared.The instruction executes. EnableOut is set.No action taken.Publication 1756-RM003I-EN-P - January 2007