Digi XBee SX 868 - Extended Transmit Status - 0 X8 B; Description

Frame descriptions Extended Transmit Status - 0x8B
XBee® SX 868 RF Module User Guide
185
Extended Transmit Status - 0x8B
Request frames:
n
Transmit Request - 0x10
n
Explicit Addressing Command Request - 0x11
Description
This frame type is emitted when a network transmission requestcompletes. The status field of this
frame indicates whether the request succeeded or failed and the reason. This frame type provides
additional networking details about the transmission.
This frame is only emitted if the Frame ID in the request is non-zero.
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 API frame
format.
Offset Size Frame Field Description
0 8-bit Start Delimiter Indicates the start of an API frame.
1 16-bit Length Number of bytes between the length and checksum.
3 8-bit Frame type
Transmit Status - 0x8B
4 8-bit Frame ID Identifies the data frame for the host to correlate with a prior
request.
5 16-bit Reserved
Unused, but this field is typically set to 0xFFFE.
7 8-bit Transmit
retry count
The number of application transmission retries that occur.
8 8-bit Delivery
status
Complete list of delivery statuses:
0x00 = Success
0x01 = MAC ACK failure
0x02 = CCA/LBT failure
0x03 = Indirect message unrequested / no spectrum
available
0x21 = Network ACK failure
0x25 = Route not found
0x31 = Internal resource error
0x32 = Resource error lack of free buffers, timers, etc.
0x74 = Data payload too large
0x75 = Indirect message unrequested
9 8-bit Discovery
Complete list of delivery statuses: