In the server configuration, there is an Infinite (No Timeout) setting for Disable Alarms. The Infinite (No Timeout) sets the Disable Alarms action to be in effect indefinitely. The item’s alarms and alarm actions will only be re-displayed when the Enable Alarms action is triggered.
When Infinite (No Timeout) is used, the Disable Alarms action works like this:
- The Disable Alarms action for an item is selected by a user or triggered by a Schedule, Logic program or Method Call. The item could be an individual database item or a Group.
- ClearSCADA withholds the alarms for the item (the item’s alarms are disabled).
When the item’s alarms are disabled, ClearSCADA:
- Assigns the Alarm Disabled system color to the item. The color is used on displays such as Queries Lists, unless another color status takes precedence.
- Will not display alarms for the item
- Denies access to the alarm response actions (Acknowledge, Unacknowledge, and so on.)
- Will not redirect alarms for the item (if any redirections are configured)
- Logs the item’s change in state in the Event Journal (Events List). This will not appear as an alarm-related entry as no alarm has been generated.
- Indicates that the items alarms are disabled on the item’s Status display. ClearSCADA continues to monitor the item for alarm conditions, but does not display any alarm information. ClearSCADA will only display the alarm details when the item’s alarms are no longer withheld (are enabled).
- The item’s alarms and alarm features continue to be withheld until the Enable Alarms action is selected or ‘called’ for the item. The Independent setting on the server has an effect on how the Enable Alarms action works (see Define whether User Types can Disable Alarms Independently in the ClearSCADA Guide to Server Administration).