Distributed alarm group lists

The Distributed Alarm system uses alarm groups to organize alarms into a local tree view. The distributed alarm display uses the tree view to filter alarms. You can view these alarm groups from multiple nodes on a network.

The Distributed Alarm system uses an alarm group list to combine alarm groups from local and remote nodes. An alarm group list is a named list consisting of InTouch nodes and the alarm groups defined on each of those nodes. It can also contain other alarm group list names and local alarm groups. An alarm consumer, such as the Alarm Viewer control, uses this list to query for alarms.

Under a query alias, the Alarm Viewer control can show the combined alarms from the groups that belong to the list. Alarms can be acknowledged on the local InTouch node or from a remote node on the network.

The following figure shows an alarm group list that combines alarm groups from three nodes. The alarm group list is defined locally on NodeC. The remaining alarm groups are from remote nodes.

The Distributed Alarm Display shows the alarms resulting from a query across all of the alarm groups that belong to the list. For example, if you were interested in showing all tank farm alarms across several InTouch nodes, you can create a list called TankFarmAlarms. To this list, you add alarm groups from all nodes that run tank farm InTouch applications.

For more information on creating alarm groups, see Creating an Alarm Group.