Frame descriptions
Transmit Status frame - 0x8B
Digi XBee® 3 802.15.4 RF Module User Guide
221
Transmit Status frame - 0x8B
Description
When a Transmit Request (0x10, 0x11) completes, the device sends an 0x8B Transmit Status message
out of the serial interface. This message indicates if the Transmit Request was successful or if it failed.
Note
Broadcast transmissions are not acknowledged and always return a status of 0x00, even if the
delivery failed.
Format
The following table provides the contents of the frame. For details on frame structure, see
Frame data
fields
Offset Description
Frame type
3
0x8B
Frame ID
4
The Frame ID of the response will be the same value that was used in the
originating Tx request.
16-bit
destination
address
5
The 16-bit Network Address where the packet was delivered (if
successful). If not successful, this address is 0xFFFD (destination address
unknown).
6
Transmit retry
count
7
The number of application transmission retries that occur.
Delivery
status
8
0x00 = Success
0x01 = MAC ACK Failure
0x02 = CCA failure
0x03 = Indirect message unrequested
0x21 = Network ACK Failure
0x31 = Internal resource error
0x34 = No Secure Session Connection
0x35 = Encryption Failure
0x74 = Data payload too large
Reserved
9
Example
In the following example, the destination device reports a successful unicast data transmission. The
outgoing Transmit Request that this response frame came from uses Frame ID of 0x47.
