Xenta 527 Alarm will not reset

Issue

Xenta 527 Alarm will not reset

Product Line

TAC I/NET, TAC Vista

Environment

I/NET Seven Site

Cause

Issue with Xenta 527 Alarm will not reset

Resolution

Check the configuration of the alarm object and the Hysteresis configured. The default is 0.50 which is appropriate for whole numbers, but if the signal you are monitoring has decimals the Hysteresis may not be small enough to detect a return to normal state. For example differential room pressure which has a range of 0.06 to 0.20.

In these situations use a Hysteresis of 0 to trigger a clear as soon as the value returns to a non alarm value.