Signal Tag consists of a specific signal from a device.
Alarms alert the operator that an event has occurred. (Alarms are assigned to
modules.) Typically, you want the operator to perform some action and respond to the
alarm. Alarms can be both visible and audible.
The database contains configuration information and lets you make off-line changes
without affecting the process. Online control algorithm monitoring and modification
are also available.
Following is a diagram showing the DeltaV system’s hierarchical structure.
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