Device state
Status, Enabled and Health provide information about the state of a device under the driver network. There are no hardware device components in the
driver and niagaraDriver modules. This topic applies to all driver device components.
Status
The Status property for a device indicates whether it is communicating. A good status is {ok} (no status flags).
Figure 13. Device status properties
If you are using the New button to add a device, its initial Status may be {down} or {fault}, as shown here. This could mean that the device address properties are yet unassigned or are mis-configured.
{fault}, see the Fault Cause property value for more details.
Successful polling or a device ping action verify the status of devices. You configure ping properties using the Monitor component.
From the Device Manager view, you can also right-click a device, and from the popup menu select to manually verify communication with the device.
Depending on conditions, a device may have one of various status flags set, including fault or disabled or other flags in combination, such as down, alarm, stale, and/or unackedAlarm. In the Device Manager, non-ok status is indicated for any device by a row color other than white.
Enabled
By default, device Enabled is set to true. You can toggle this in the Property Sheet or in the Device Manager view (by selecting the device and using the Edit button).
Health
This component contains historical properties that display the last successful message received from the device, including timestamps.