Alarm management¶

Alarms status

In UNIQO, alarm management is in conformance with the OPC UA standard. An alarm can be found in one of these statuses:

Status	Description
Active	Existing field alarm
Acknowledged	Alarm taken charge of by an operator
Confirmed	Origin of the alarm declared resolved by an operator
Disable	Returned field alarm

By default, the statuses are confirmed and managed consecutively, but it is possible to optimize their management (see Customize alarm management).

Branching enabled

At runtime, if the same alarm activates repeatedly, by default the related alarm object in UNIQO only signals the most recent event and displays it in the Alarms grid widget. The alarm must then be acknowledged and confirmed. Disappears if the relative variable returns to its normal status in the PLC.

However, using the Alarm branching property of the project node, it is possible to enable the signaling of multiple active alarms for a same alarm object. In the Alarms grid widget, all the active alarms for a same alarm object are then displayed, which must all be acknowledged and confirmed. The alarms stop if the related variables return to normal status on the PLC.

Hint

alarm branching is indicated when a rigorous control and count of alarm events is required, for example in production processes subject to certification (e.g. for medical products).