Timed Alarm Inhibit

This application allows Controllers to inhibit alarms on analog, status, rate, multistate, rtstring, tank, flowTotalConfig, connection, and remote points for a configured period of time. The functionality is not available on points where an Administrator has inhibited abnormal alarms.

Effect of Timed Alarm Inhibit on Alternate Alarm Limits

As described in Alternate Alarm Limits, when you configure or modify alarm limits and inhibit settings on the various tabs of the almlimit Row Edit dialog box, the system transfers the settings to the corresponding limits and inhibit settings of all analog, rate, and flowTotalConfig records associated with the almlimit record. Similarly, when you configure or modify the alarm limits and inhibit settings of an analog, a rate, or a flowTotalConfig record associated with an almlimit record, the system transfers the settings to the almlimit record, as well as to any analog, rate, or flowTotalConfig records associated with that almlimit record.

However, when alarms on an analog, a rate, or a flowTotalConfig points are inhibited for a configured amount of time via the Timed Alarm Inhibit application, and the corresponding analog, rate, or flowTotalConfig record has an associated almlimitset record, the system:

• Ignores any saved changes to the alarm limits or inhibit settings within the almlimit record during the time of alarm inhibition.

  When the Secondtimer expires, the point takes the settings from the almlimitset record to ensure it stays in sync with any changes that may have occurred during the time of alarm inhibition.

  The system overwrites any changes to alarm limits or inhibit settings on the point that was subject to Timed Alarm Inhibit with the current state of the almlimitset record with which it is associated.

• Does not transfer changes made to that analog, rate, or flowTotalConfig record to the almlimit record, or to any other analog, rate, or flowTotalConfig record associated with that almlimit record.

  When the Secondtimer expires, the almlimitset record settings overwrite the settings on the point to ensure the point stays in sync with the almlimitset record.

For further information, refer to Alternate Alarm Limits.