At the time of this document, Sedona Framework support for hibernating devices (typically battery powered devices) is not
widely available, including “Maintenance Mode” as described here. However, the SedonaJen6lpNetwork driver in the NiagaraAX
station is “ready” for such device support.
Maintenance Mode provides the means for a hibernating Jennic-based device to become “awake” to accept an incoming Sox connection from NiagaraAX Workbench. Typically, this applies only to a battery-powered device, which spends most of the time in a very low-power (hibernation) state, with its Sedona Framework VM and RF communications disabled.
The Workbench user invokes a Request Maintenance Mode action on the station’s SedonaJen6lpDevice that represents the device. This sets a flag in the SedonaJen6lpNetwork’s Chopan Server that maintenance mode has been requested.
For a description of how this works from the NiagaraAX (station) side using Workbench, see “SedonaJen6lpDevice actions” in the NiagaraAX Sedona Networks Guide.
The Chopan client operating in the device’s app makes a periodic Chopan client request, checking this maintenance mode (Mm) flag. If detected set, the device awakens into “Maintenance Mode”, allowing a Sox connection to it to be made. Once a Sox connection is made, the device remains awake for the duration of that connection, returning to hibernation only after the Sox session has ended.
Related properties are in the ChopanNetwork component in the device’s app. See Figure 20.
Mm Check Freq — specifies the number of hibernation cycles between checks for maintenance mode.
Mm Timeout — specifies how long, once the device receives the maintenance mode request and becomes awake, that it waits for a Sox connection to be made. The default is 60 seconds.
This timeout prevents battery drain if a user places a device in maintenance mode, but then forgets to make a Sox connection. It the timeout expires without a connection made, hibernation resumes.
Any hibernating-type device requires similar configuration, meaning it should have the
chopan
kit installed, and be configured as a Chopan client. See the vendor’s documentation for any further details.
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