HistorianQuerying an Operations Hub Model
You can query an Operations Hub model using the object types, data variables, and objects:
| Item | Description |
|---|---|
| Object types | Define the structure of the equipment within your model (for
example, a car). Object types are represented by |
| Data variables | Define the actual data that is received from a data source - that
is, how to use a property in the Views feature. For example, you can
define a property to appear as a trend line on a trend chart. For
each object type, such as a car, you set up all the data variable
names (such as color, speed). Any object associated with this type
can reuse them in its own definition. Data variables are
represented by |
| Objects | Instances of object types or pieces of equipment (for example,
BMW, BENZ). Objects are represented by |
.
.
.The following image shows the object types, data variables, and objects in the
add-in.
