A device component (“generically”: DriverDevice) is a second-tier component for any driver, and by default has mandatory (frozen) component slots, such as:
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“Health” and other status properties—see Device status properties.
Depending on the driver type, a device typically has other properties. For example, if a device under a field bus, it may
have a “Device Address” property, or a similar properties. See Driver-specific device slots. Or, a device may have a “Virtual” gateway slot. See Virtual gateway and components.
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One or more device extensions—for example “Points” (DriverDevicePointExt). See About device extensions.
Typically, the property sheet is the default view for a device component—you can access device properties, slots, and its extensions using the device’s property sheet (Figure 4).
The DriverDevice is also the parent container for all device extensions. As shown in Figure 5, device extensions (e.g. “Points”) are visible under the device when you expand it in the nav tree.
