Using Combined Alarms you can define an alarm which only is triggered if two or more events fulfill a
certain condition.
Example 1:
An alarm should only be triggered as soon as the temperature of Logger 1 and Logger 2 exceeds a
limit value.
Change the simulation of the alarm conditions so that they are no longer given for the alarm in test step above.
Remark:
To change the alarm condition don’t change any field of the Point properties window of e.g. P91. In case of pressing the save button, each combined alarm containing e.g. P91 becomes disabled ( ), shown in the Compound alarm detector details window.
Verify that the alarm is cleared.