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5.
INITIAL DEVICE START-UP
The device will search for an open ZigBee network to join when you first apply power to it.
Open the ZigBee network for joining and then power-up the device.
S2 will blink quickly to indicate a search in progress. Once a search cycle is complete it will either blink
five times slowly to indicate it has joined a network, or blink three times quickly to indicate a joining
failure – for example no network found, not permitted onto the network, etc. It will continue to search
for a network in case of failure.
Subsequently, when the device is power-cycled, it will blink five times slowly to indicate it is operating
as a router on the network, ten times slowly to indicate that it is operating as a coordinator and trust
center or blink quickly to indicate it is searching for a network to join. When commissioned, the router’s
LED will remain off after the five/ten blink cycles during normal operation. Afterwards, it will turn on only
for as long as it is permitting other devices to join the network.
After reboot, if the device is properly commissioned, it resumes operation doing a “silent rejoin”, i.e. it
does not broadcast a device announcement in this case. After joining a network, the device will prolong
the joining window by three minutes via a fresh ZDO permit joining request
2
.
2
Stretching the joining duration is done in products with ubisys ZigBee Stack version 1.48 or above.
