Libelium Waspmote Technical Manual page 85

Figure: Channels used by the XBee modules in 2.4GHz
The XBee-PRO 802.15.4 modules comply with the standard IEEE 802.15.4 which defines the physical level and the
link level (MAC layer). The XBee modules add certain functionalities to those contributed by the standard, such as:
Node discovery: certain information has been added to the packet headers so that they can discover other
•
nodes on the same network. It allows a node discovery message to be sent, so that the rest of the network
nodes respond indicating their data (Node Identifier, @MAC, @16 bits, RSSI).
Duplicated packet detection: This functionality is not set out in the standard and is added by the XBee
•
modules.
The classic topology of this type of network is a star topology, as the nodes establish point to point connections
with brother nodes through the use of parameters such as the MAC or network address.
Figure: Star topology
Regarding the transmission power, it can be adjusted to several values depending on the radio version:
Figure: Transmission power values
Related API libraries: WaspXBeeCore.h, WaspXBeeCore.cpp, WaspXBee802.h, WaspXBee802.cpp
All information about their programming and operation can be found in the
All the documentation is located in the
Parameter XBee-PRO 802.15.4
0 10 dBm
1 12 dBm
2 14 dBm
3 16 dBm
4 18 dBm
Development section
XBee-PRO 802.15.4 EU
-3 dBm
-3 dBm
2 dBm
8 dBm
10 dBm
802.15.4 Networking
in the Libelium website.
-85-
802.15.4/ZigBee/RF modules
Guide.
v8.2