When a TX Request is completed, the module sends a TX Status message. This message will indicate if the packet was transmitted successfully or if there was a failure.

Frame Type: 0x8B

Delivery status:

• 0x00 = Success
• 0x01 = MAC ACK Failure
• 0x02 = CCA Failure
• 0x15 = Invalid destination endpoint
• 0x21 = Network ACK Failure
• 0x22 = Not Joined to Network
• 0x23 = Self-addressed
• 0x24 = Address Not Found
• 0x25 = Route Not Found
• 0x26 = Broadcast source failed to hear a neighbor relay the message
• 0x2B = Invalid binding table index
• 0x2C = Resource error lack of free buffers, timers, etc.
• 0x2D = Attempted broadcast with APS transmission
• 0x2E = Attempted unicast with APS transmission, but EE=0
• 0x32 = Resource error lack of free buffers, timers, etc.
• 0x74 = Data payload too large
• 0x75 = Indirect message unrequested

Discovery status:

• 0x00 = No Discovery Overhead 0x01 = Address Discovery
• 0x02 = Route Discovery
• 0x03 = Address and Route
• 0x40 = Extended Timeout Discovery

Identifies the serial port data frame being reported.

16-bit Network Address the packet was delivered to (if successful) as a hexadecimal string. If not successful, this address will be "FFFD": Destination Address Unknown.