API operation API frames
XBee/XBee-PRO ZigBee RF Modules User Guide 128
ZigBee Explicit Rx Indicator
Frame type:0x91
When the modem receives a ZigBee RF packet it is sent out the UART using this message type (when AO=1).
Frame Fields Offset Example Description
Start Delimiter
00x7E
Length
MSB 1 0x00
Number of bytes between the length and the checksum
Frame-specific
Data
LSB 2 0x18
Frame Type
30x91
64-bit Source
Address
MSB 4 0x00
64-bit address of sender. Set to 0xFFFFFFFFFFFFFFFF
(unknown 64-bit address) if the sender's 64-bit address is
unknown.
50x13
60xA2
70x00
80x40
90x52
10 0x2B
LSB 11 0xAA
16-bit Source
Network Address
MSB 12 0x7D
16-bit address of sender
LSB 13 0x84
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
Frame-specific
Data
Receive Options
20 0x02
0x01 – Packet Acknowledged
0x02 – Packet was a broadcast packet
0x20 - Packet encrypted with APS encryption
0x40 - Packet was sent from an end device (if known)
Received Data
21 0x52
Received RF data
22 0x78
23 0x44
24 0x61
25 0x74
26 0x61
Checksum
27 0x52
0xFF - the 8 bit sum of bytes from offset 3 to this byte
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