RSView Supervisory Edition Installation Guide

11 • CREATING ALARMS• • • • •This alarm stateAny Change*Changes to On*Changes to Off*Does thisTriggers an alarm when a tag valuechanges from 0 to 1 or from 1 to 0Triggers an alarm only when a tag valuechanges from 0 to 1.Triggers an alarm only when a tag valuechanges from 1 to 0.11 • PlaceholderIn the above table, * indicates change-of-state types. These are considered out of alarmimmediately after the change of state.Alarm severityAlarms can range in severity from one to eight to indicate different levels of importance.One is most severe, eight is least severe. For example, a level-four alarm might warn thata vat is half full of liquid, while a level-one alarm indicates that the vat is about tooverflow. Both alarms monitor the same tag but have different severity levels.When you set up alarm severity, you specify what severity levels mean and what actionsthey will trigger. Severity determines the order in which alarms are displayed in an alarmbanner.Alarm messagesAlarm messages report information about alarms. There are three types of messages:• In Alarm messages are generated when tags go into alarm.• Out of Alarm messages are generated when tags goes out of alarm.• Acknowledged messages are generated when operators acknowledge alarms.For each message type, you can use the default message or create a custom message, androute the messages to a log file, a printer, or both destinations.Alarm log fileThe alarm log file records alarm incidents. You can set up how often, if ever, you want logfiles created and deleted, and view the alarm log file using the Alarm Log Viewer.Using the Alarm Log Setup tool, you can set up automatic logging to a central ODBCdatabase. You can also use the AlarmLogSendToODBC command to export the alarm logfile to an ODBC database while online. For more information about theAlarmLogSendToODBC command, see Help.11-7