When the alarm occurs
When an alarm occurs, the object's symbol will typically change color and start blinking. Also a sound may be associated with the alarm. The system designer defines the alarm colors and behavior in the Definition program.
On this picture the two objects, q1 and q3 are both in alarm.
When the alarm is acknowledged
The alarm can be acknowledged from the Alarm List or directly from the diagram by clicking on the object and selecting Acknowledge Alarm in the command menu.
The object's symbol will typically change color and stop blinking. The acknowledge color is defined by the system designer.
Alarm transparency
To provide the optimal overview for the operator, IGSS has a built-in feature called alarm transparency. It means that an alarm appearing on a diagram which is referenced by another diagram will be indicated in both places.
The objects above, q1 and q3, are both located on the Dairy diagram. On the PlantTypes diagram there's a button referencing this diagram. When an object on the Dairy diagram goes in alarm, the button will start blinking. By default, the alarm color will be blue and the alarm priority 3, but the system designer can change this in the Definition program. Alarm no. 1 is used to achieve the alarm transparency effect. However, this alarm is for internal use and will not be visible in the Alarm List.
