Transmit Status Frame - 0X8B - Digi XBee-PRO S3 User Manual

Frame descriptions

Transmit Status frame - 0x8B

Description
When a Transmit Request (0x10, 0x11) completes, the device sends a 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
format.
Frame data
fields
Frame type
Frame ID
Reserved
Transmit retry
count
Delivery
status
Discovery
status
Example
In the following example, the destination device reports a successful unicast data transmission
successful and a route discovery occurred. The outgoing Transmit Request that this response frame
uses Frame ID of 0x47.
XBee®-PRO 900HP/XSC RF Modules
Offset Description
3 0x8B
4 Identifies the serial interface data frame being reported. If Frame ID = 0 in
the associated request frame, no response frame is delivered.
5-6 Set to 0xFFFE.
The number of application transmission retries that occur.
7
0x00 = Success
8
0x01 = MAC ACK failure
0x02 = Collision avoidance failure
0x21 = Network ACK failure
0x25 = Route not found
0x31 = Internal resource error
0x32 = Internal error
0x74 = Payload too large
0x75 = Indirect message requested
0x00 = No discovery overhead
9
0x02 = Route discovery
Transmit Status frame - 0x8B
API frame
140