XBee®/XBee‐PRO® ZB SMT RF Modules
Frame Fields
Offset Example
0 0x7E
Description
Start Delimiter
Length
MSB 1 0x00
LSB 2 0x17
3 0x11
Number of bytes between the length and the checksum
Frame Type
Frame ID
Identifies the serial port data frame for the host to
correlate with a subsequent transmit status. If set to 0, no
transmit status frame will be sent out the serial port.
4 0x01
MSB 5 0x00
6 0x00
7 0x00
64-bit address of the destination device (big endian byte
order). For unicast transmissions, set to the 64-bit
address of the destination device, or to
0x0000000000000000 to send a unicast to the
coordinator. Set to 0x000000000000FFFF for broadcast.
64-bit Destination
Address
8 0x00
9 0x00
10 0x00
11 0xFF
12 0xFF
MSB 13 0xFF
A
P
I
16-bit address of the destination device (big endian byte
order). Set to 0xFFFE for broadcast, or if the 16-bit
address is unknown.
16-bit Destination
Network Address
LSB 14 0xFE
15 0x00
Set to 0x00 for ZDO transmissions (endpoint 0 is the
ZDO endpoint).
P
a
c
k
e
t
Source Endpoint
Frame-specific Data
Set to 0x00 for ZDO transmissions (endpoint 0 is the
ZDO endpoint).
Destination Endpoint
16 0x00
MSB 17 0x00
LSB 18 0x05
Set to the cluster ID that corresponds to the ZDO
command being sent.
0x0005 = Active Endpoints Request
Cluster ID
Profile ID
MSB 19 0x00
LSB 20 0x00
Set to 0x0000 for ZDO transmissions (Profile ID 0x0000
is the ZigBee Device Profile that supports ZDOs).
Sets the maximum number of hops a broadcast
transmission can traverse. If set to 0, the transmission
radius will be set to the network maximum hops value.
Broadcast Radius
Transmit Options
21 0x00
22 0x00
23 0x01
24 0x34
All bits must be set to 0.
Transaction Sequence
Number
The required payload for a ZDO command. All multi-byte
ZDO parameter values (u16, u32, 64-bit address) must
be sent in little endian byte order.
The Active Endpoints Request includes the following
payload:
Data Payload
ZDO Payload
[16-bit NwkAddrOfInterest]
Note the 16-bit address in the API example (0x1234) is
sent in little endian byte order (0x3412).
25 0x12
26 0xA6
0xFF minus the 8 bit sum of bytes from offset 3 to this
byte.
Checksum
© 2010 Digi International, Inc.
120
DCD [ DIGITAL CORE DESIGN ]
