User Manual

XBee®/XBee‐PRO®ZBRFModules
©2011DigiInternational,Inc. 130
NJ
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.
Note: Setting the NJ command will not cause the radio to broadcast the new value of
NJ out to the network via a Mgmt_Permit_Joining_req; this value is transmitted by
setting CB=2. See the command description for CB for more information.
CRE
0 - 0xFF 
[x 1 sec]
0xFF 
(always allows joining)
JV
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
power cycle. If a coordinator is not detected, the router will leave its current channel and
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.
R
0 - Channel verification
disabled
1 - Channel verification
enabled
0
NW
Network Watchdog Timeout. Set/read the network watchdog timeout value. If NW is
set > 0, the router will monitor communication from the coordinator (or data collector)
and leave the network if it cannot communicate with the coordinator for 3 NW periods.
The timer is reset each time data is received from or sent to a coordinator, or if a many-
to-one broadcast is received.
R
0 - 0x64FF
[x 1 minute]
(up to over 17 days)
0 (disabled)
JN
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
action blinks the Associate LED rapidly on all devices that receive the transmission, and
sends an API frame out the UART of API devices. This feature should be disabled for
large networks to prevent excessive broadcasts.
RE 0 - 1 0
AR
Aggregate Routing Notification. Set/read time between consecutive aggregate route
broadcast messages. If used, AR may be set on only one device to enable many-to-one
routing to the device. Setting AR to 0 only sends one broadcast. AR is in units of 10
seconds.
CR 0 - 0xFF 0xFF
DJ
Disable Joining.
Setting this register to 1 will disable the device from joining. This setting is not writeable
(WR) and will reset to zero after a power cycle.
RE 1 (enabled) 0 [ not writeable ]
II
Initial ID.
This register determines the operating 16-bit PAN ID for the network. Changing this
value will cause the Coordinator to leave the network and form another. A setting of
0xFFFF allows the system to choose its own 16 bit 802.15.4 PAN Identifier.
This setting is not writeable (WR) and will reset to 0xFFFF after a power cycle.
C 0x0000-0xFFFF
0xFFFF [ not
writeable ]
NetworkingCommands
AT
Command
Name and Description
Node
Type
1
Parameter Range Default