XBee®/XBee‐PRO® ZB SMT RF Modules
Networking Commands
AT
Name and Description
Command
Parameter Range
Default
Node Join Time. Set/Read the time that a Coordinator/Router allows nodes to join.
This value can be changed at run time without requiring a Coordinator or Router to
restart. The time starts once the Coordinator or Router has started. The timer is reset
on power-cycle or when NJ changes.
For an end device to enable rejoining, NJ should be set less than 0xFF on the device
that will join. If NJ < 0xFF, the device assumes the network is not allowing joining and
first tries to join a network using rejoining. If multiple rejoining attempts fail, or if
NJ=0xFF, the device will attempt to join using association.
0 - 0xFF
[x 1 sec]
0xFF
(always allows joining)
NJ
0 - Channel verification
disabled
Channel Verification. Set/Read the channel verification parameter. If JV=1, a router
will verify the coordinator is on its operating channel when joining or coming up from a
JV
power cycle. If a coordinator is not detected, the router will leave its current channel and 1 - Channel verification
0
attempt to join a new PAN. If JV=0, the router will continue operating on its current
channel even if a coordinator is not detected.
enabled
Network Watchdog Timeout. Set/read the network watchdog timeout value. If NW is
0 - 0x64FF
set > 0, the router will monitor communication from the coordinator (or data collector)
NW
and leave the network if it cannot communicate with the coordinator for 3 NW periods. [x 1 minute]
0 (disabled)
The timer is reset each time data is received from or sent to a coordinator, or if a many-
to-one broadcast is received.
(up to over 17 days)
Join Notification. Set / read the join notification setting. If enabled, the module will
transmit a broadcast node identification packet on power up and when joining. This
JN
action blinks the Associate LED rapidly on all devices that receive the transmission, and 0 - 1
sends an API frame out the serial port of API devices. This feature should be disabled
for large networks to prevent excessive broadcasts.
0
Aggregate Routing Notification. Set/read time between consecutive aggregate route
broadcast messages. If used, AR should be set on only one device to enable many-to- 0 - 0xFF
one routing to the device. Setting AR to 0 only sends one broadcast
AR
0xFF
© 2010 Digi International, Inc.
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DCD [ DIGITAL CORE DESIGN ]
