Download XBee SE Manual

XBee®/XBee‐PRO® SE RF Modules The 64-bit destination address should be set to 0x000000000000FFFF for a broadcast
transmission (to all devices). The coordinator can be addressed by either setting the 64-bit
address to all 0x00s and the 16-bit address to 0xFFFE, OR by setting the 64-bit address to the
coordinator's 64-bit address and the 16-bit address to 0x0000. For all other transmissions, setting
the 16-bit address to the correct 16-bit address can help improve performance when transmitting
to multiple destinations. If a 16-bit address is not known, this field should be set to 0xFFFE
(unknown). The Transmit Status frame (0x8B) will indicate the discovered 16-bit address, if
successful.
The broadcast radius can be set from 0 up to NH. If set to 0, the value of NH specifies the
broadcast radius (recommended). This parameter is only used for broadcast transmissions. The
options byte may be set to 0x20 to invoke APS end-to-end security. This requires an application
link key to have been previously established between the source and destination nodes.
The maximum number of payload bytes can be read with the NP command. Note: if source routing
is used, the RF payload will be reduced by two bytes per intermediate hop in the source route.
Frame Fields
Start Delimiter
Offset
Example
Description
0 0x7E
Length
MSB 1 0x00
LSB 2 0x1A
Frame-specific Data Frame Type
Frame ID
Number of bytes between the length and the checksum
3 0x11
4 0x01
Identifies the UART data frame for the host to correlate
with a subsequent ACK (acknowledgement). If set to 0,
no response is sent.
MSB 5 0x00
6 0x00
64-bit Destination
Address
7 0x00
8 0x00
9 0x00
10 0x00
Set to the 64-bit address of the destination device. The
following addresses are also supported:
0x0000000000000000 - Reserved 64-bit address for the
coordinator
0x000000000000FFFF - Broadcast address
11 0x00
A
P
I
12 0x00
16-bit Destination
Network Address
P
a
c
k
e
t
Source Endpoint
Destination Endpoint
Cluster ID
Profile ID
MSB 13 0xFF
LSB 14 0xFE
Set to the 16-bit address of the destination device, if
known. Set to 0xFFFE if the address is unknown, or if
sending a broadcast.
15 0xA0
Source endpoint for the transmission.
16 0xA1
Destination endpoint for the
transmission.
17 0x15
18 0x54
19 0xC1
20 0x05
Cluster ID used in the transmission
Profile ID used in the transmission
Broadcast Radius
21 0x00
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.
Transmit Options
22 0x00
0, or 0x20 if APS end-to-end security should be invoked.
23 0x54
24 0x78
Data Payload
25 0x44
26 0x61
Data that is sent to the destination device
27 0x74
28 0x61
Checksum
© 2010 Digi International, Inc.
29 0x3A
0xFF - the 8 bit sum of bytes from offset 3 to this byte.
92