© 2014 Digi International Inc. 83
XBee/XBee-PRO
®
DigiMesh 2.4 User Manual
Explicit Rx Indicator
Frame Type:0x91
When the modem receives an RF packet it is sent out the UART using this message type (when
AO=1).
Example. In the above example, a device with a 64-bit address of 0x0013A200 40522BAA sends
a broadcast data transmission to a remote device with payload “RxData”. Suppose the
transmission was sent with source and destination endpoints of 0xE0, cluster ID=0x2211, and
profile ID=0xC105. If AO=1 on the receiving device, it would send the above frame out its UART.
Frame Fields Offset Example Description
Start Delimiter 0 0x7E
Length
MSB 1 0x00
Number of bytes between the length
and the checksum
LSB 2 0x18
Frame-specific
Data
Frame Type 3 0x91
64-bit Source
Address
MSB 4 0x00
64-bit address of sender
50x13
60xA2
70x00
80x40
90x52
10 0x2B
LSB 11 0xAA
Reserved
12 0xFF
Reserved.
13 0xFE
Source
Endpoint
14 0xE0
Endpoint of the source that initiated
the transmission
Destination
Endpoint
15 0xE0
Endpoint of the destination the
message is addressed to.
Cluster ID
16 0x22
Cluster ID the packet was addressed
to.
17 0x11
Profile ID
18 0xC1
Profile ID the packet was addressed
to.
19 0x05
Receive Options 20 0x02
0x01 – Packet Acknowledged
0x02 – Packet was a broadcast
packet
Received Data
21 0x52
Received RF data
22 0x78
23 0x44
24 0x61
25 0x74
26 0x61
Checksum 27 0x56
0xFF - the 8 bit sum of bytes from
offset 3 to this byte.
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