Logix5000 Controllers General Instructions - SLAC Confluence

36 Digital Alarm Instruction (ALMD)Input Parameter Data Type DescriptionOperDisable BOOL Operator Disable. Set by the operator interface to disable the alarm. The alarm instructionclears this parameter.Default is cleared.ProgEnable BOOL Program Enable. Set by the user program to enable the alarm. Takes precedence overDisable command.Ladder Logic: Copied from instruction operand.Structured Text: Copied from instruction operand.Default is cleared.OperEnable BOOL Operator Enable. Set by the operator interface to enable the alarm. Takes precedence overDisable command. The alarm instruction clears this parameter.Default is cleared.AlarmCountReset BOOL A False-to-True transition resets the alarm count to zero.Default is cleared.UseProgTime BOOL Specifies whether the controller’s clock is used to timestamp the InAlarm andReturnToNormal events, or if these events are timestamped by the user program (using theProgTime parameter).Set - ProgTime value provides timestamp.Cleared - Controller’s clock provides timestamp.Default is cleared.ProgTime LINT Specifies a timestamp value for the InAlarm and ReturnToNormal events, if UseProgTime isSet.Severity DINT Specifies the severity of the alarm.Valid = 1 to 1000 (1000 = most severe; 1 = least severe).Default is 500.MinDurationPRE DINT Specifies the minimum duration preset for the alarm condition to remain true before thealarm is marked as InAlarm and alarm notification is sent to clients (milliseconds).Valid = 0 to 2147483647.Default is 0.Publication 1756-RM003I-EN-P - January 2007