XB24-BCIT-004 Digi International/Maxstream, XB24-BCIT-004 Datasheet - Page 22

• Manufacturer Part Number: XB24-BCIT-004
• Description: MODULE 802.15.4 SER 2 CHIP ANT
• Manufacturer: Digi International/Maxstream
• Series: XBee™r

Specifications of XB24-BCIT-004

• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4
• Applications: Home/Building Automation, Industrial Control, ZigBee™
• Power - Output: 2 mW (3 dBm)
• Sensitivity: -96dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 38mA
• Current - Transmitting: 35mA
• Data Interface: PCB, Through Hole
• Antenna Connector: On-Board, Chip
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -

XBee ZNet 2.5/XBee‐PRO ZNet 2.5 ZigBee OEM RF Modules v1.x4x
3.4. ZigBee Network Communications
3.4.1. ZigBee Device Addressing
3.4.2. ZigBee Application-layer Addressing
16-bit Network Addresses
64-bit Addresses
Zigbee supports device addressing and application layer addressing. Device addressing specifies
the destination address of the device a packet is destined to. Application layer addressing indicates
a particular application recipient, known as a Zigbee endpoint, along with a message type field
called a Cluster ID.
The 802.15.4 protocol upon which the ZigBee protocol is built specifies two address types:
A 16-bit network address is assigned to a node when the node joins a network. The network
address is unique to each node in the network. However, network addresses are not static - it can
change.
The following two conditions will cause a node to receive a new network address:
ZigBee requires that data be sent to the 16-bit network address of the destination device. This
requires that the 16-bit address be discovered before transmitting data. See 3.2.3 Network
Address Discovery for more information.
Each node contains a unique 64-bit address. The 64-bit address uniquely identifies a node and is
permanent.
The ZigBee application layers define endpoints and cluster identifiers (cluster IDs) that are used to
address individual services or applications on a device. An endpoint is a distinct task or application
that runs on a ZigBee device, similar to a TCP port. Each ZigBee device may support one or more
endpoints. Cluster IDs define a particular function or action on a device. Cluster IDs in the ZigBee
home controls lighting profile, for example, would include actions such as “TurnLightOn”,
“TurnLightOff”, “DimLight”, etc.
Suppose a single radio controls a light dimmer and one or more light switches. The dimmer and
switches could be assigned to different endpoint values. To send a message to the dimmer, a
remote radio would transmit a message to the dimmer endpoint on the radio. In this example, the
radio might support cluster IDs to “TurnLightOn”, “TurnLightOff”, or “DimLight”. Thus, for radio A to
turn off a light on radio B, radio A would send a transmission to the light switch endpoint on radio
B, using cluster ID “TurnLightOff”. This is shown in the figure below.
© 2008 Digi International, Inc.
• 16-bit network addresses
• 64-bit Addresses
1. If an end device cannot communicate with its parent it may need to leave the network and
rejoin to find a new parent.
2. If the device type changes from router to end device, or vice-versa, the device will leave the
network and rejoin as the new device type.
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