You can use the Status display of any item that can have alarms to view that item's State Alarm status.
The State Alarm information includes:
- The overall state of the item’s alarm features. If the item’s alarms are disabled, the overall state will be either Disabled Inactive or Disabled Active.
- The internal User Types that are disabling the point’s alarm features. This can be User (User logged on via ViewX or WebX), Logic, Schedule, Method Call, or a combination of these if more than one User Type is disabling the alarms.
The State Alarm information is particularly useful when the Independent setting is enabled on the server, and the Enable Alarms action appears to have no effect.
When Independent is enabled on the server, an item’s alarms can only be re-enabled by the internal User Types that are disabling the alarms.
Example:
If a point’s State Alarm is:
Disabled Inactive (Disabled by Logic)
the point’s alarms can only be re-enabled by a Logic program triggering the Enable Alarms action for the point. If a User, Schedule, or Method Call triggers the Enable Alarms action for the point, it will appear to have no effect.
By using the State Alarm information, you can determine:
- Why the Enable Alarms action appears to have no effect.
- Which types of item need to trigger Enable Alarms before the item’s alarm features can re-enabled.
Further Information
Status Displays: see View a Status Display in the ClearSCADA Guide to ViewX and WebX Clients.