Digi International Inc XBEEPRO2 Manual Do Utilizador

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

