XB24-BPDK Digi International/Maxstream, XB24-BPDK Datasheet - Page 31

• Manufacturer Part Number: XB24-BPDK
• Description: KIT DEVELOPMENT XBEE SERIES 2
• Manufacturer: Digi International/Maxstream
• Series: XBee™r
• Type: 802.15.4/Zigbeer

Specifications of XB24-BPDK

• Frequency: 2.4GHz
• For Use With/related Products: XBee™ Series 2 Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

XBee ZNet 2.5/XBee‐PRO ZNet 2.5 ZigBee OEM RF Modules v1.x4x
4.1.6. Resetting Network Parameters
a network is static – end devices are static and should not change their parent, and the operating
channel should not be changed.
In most cases, NJ should be set the same on all devices (coordinator, routers, and end devices) in
a PAN.
Open Network End Device Parent Link Quality
In an open network, end devices will leave their existing parent and attempt to rejoin the PAN if
the end device’s parent fails to send an acknowledgment after three consecutive transmissions or
poll requests.
Open Network Channel Verification
In an open network, routers validate the channel (if JV=1) when joining or after a power cycle or
reset event. To do this, they send a unicast transmission to the coordinator, to discover the
coordinator's 64-bit address. If the coordinator doesn't respond to multiple discovery attempts,
the router leaves the PAN and attempts to join a new PAN, based on its ID and SC parameters. If
JV=0 or if the network is a closed network (NJ < 0xFF), the router will not leave its current
channel if a coordinator is not found.
If channel verification is enabled, the Associate LED will not blink on the router until the
coordinator has responded.
Once a coordinator has started, or a router or end device has joined, the device will continue
operating on the same channel and PAN ID (even through power cycle or reset) until one of the
following occurs:
If any of the above conditions occur on a coordinator, the coordinator will attempt to start a new
PAN based on the SC and ID parameters as described in section 4.1.1. If any of the above
conditions occur on a router or end device, it will leave its current PAN and attempt to join a new
PAN based on its ID and SC parameters.
Note that with the exception of NR0, any command parameter changes do not take effect until the
changes are applied.
© 2008 Digi International, Inc.
• The PAN ID changes (ID command) such that the current operating PAN ID is invalid
• The scan channels mask changes (SC command) such that the current operating channel is
• One of the security parameters is changed (EE, EO, KY)
• After a reset or power cycle, in an open network, a router does not receive an address discov-
• In an open network, an end device does not receive an acknowledgment from its parent for
• The NR0 command is issued to force a device to leave.
not valid
ery response from the coordinator
three consecutive transmissions
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