XBee‐PRO®900HP/XBee‐PRO®XSCRFModules
©2014DigiInternationalInc. 129
XBee-PRO XSC Addressing
Each RF packet contains addressing information that is used to filter incoming RF data. Receiving modules
inspect the Hopping Channel (HP parameter), Vendor Identification Number (ID parameter) and Destination
Address (DT parameter) contained in each RF packet. Data that does not pass through all three network
security layers is discarded.
FiltrationlayerscontainedintheRFpacketheader
Address Recognition
Transmissions can be addressed to a specific module or group of modules using the DT (Destination Address)
and MK (Address Mask) parameters. The transmitting module dictates whether the packet is intended for a
specific module (local address) or multiple modules (global address) by comparing the packet’s DT parameter
to its own MK parameter.
LocalPacketsvs.GlobalPackets(TransmittingModule)
TX_DT = Transmitter Destination Address
TX_MK = Transmitter Address Mask
Note: When TX_DT = 0xFFFF (default), RF packets are global and are received by all modules within range.
(Receivers do not send ACKs.)
A receiving module will only accept a packet if a packet is addressed to it (either as a global or local packet).
The RX module makes this determination by inspecting the destination address of the RF packet and
comparing it to its own address and mask. The Destination Address of the TX module is logically “ANDed” with
the Address Mask of the RX module.
AddressRecognition(ReceivingModule)
TX_DT = Transmitter Destination Address
RX_DT = Receiver Destination Address
RF Data
from antenna
Hopping Channel
Parameter Values:
HP = 0 to 6
Channels
Match
Non-matching
Channels
VID (Vendor Identication Number)
Parameter Values:
ID = 0 to 0x7FFF
(user settable)
0x8000 to 0xFFFF
(factory-set, read-only)
Modem IDs
Match
Non-matching
IDs
Desination Address
Parameter Values:
DT = 0 to 0xFFFF
Addresses
Match
Non-matching
Addresses
RF Data
passes through
to DIO Buer
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