iFIX has alarm counters for tags with alarming disabled. These counters allow you to display the number of tags with alarming disabled by area or node. When all of the following conditions are met, a tag is considered to have alarming disabled:
- Block is configured for alarming (Tag.A_IENAB=ENABLED).
- Alarming was disabled after database load (Tag.A_ENAB=DISABLED).
- Tag is currently on scan (Tag.A_SCAN=ON).
Because iFIX never generates alarms for tags with alarming disabled, it is important to know how many tags have alarming disabled so that you do not forget them. You can then re-enable alarming when appropriate.
IMPORTANT: Analog Alarm (AA) blocks modify the counters of low priority disabled alarms, regardless of the priorities that are configured in the block.
For example, if you have configured your AA block to send Medium priority alarms when the Hi and HiHi alarm limits are exceeded, and you disable alarming for the block, the area.A_AREA_DSABLO and ALARMCOUNTERS.A_DSABLO counters will increment, not the area.A_AREA_DSABMED and ALARMCOUNTERS.A_DSABMED counters.
You can always use the disabled total counters A_AREA_DSABTOT and A_DSABTOT to determine if you have any disabled alarms.
The Area Alarm Counters for Disabled Alarms and Node Alarm Counters for Disabled Alarms tables in the following sections describe the area and node alarm counters for disabled alarms. These sections also provide examples of how to use these counters to display alarm information.
