Xbee Retries Configuration; Transmit Status Based On Mac Mode And Xbee Retries Configurations - Digi XBee S2C 802.15.4 User Manual

Operation
The default value for the MM configuration parameter is 0 which enables both the Digi header and the
MAC acknowledgment.

XBee retries configuration

Configures the maximum number of retries the device executes in addition to the three retries
provided by the 802.15.4 MAC.
as Application Retries.
For each XBee retry, the 802.15.4 MAC can execute up to three retries.
This only applies if MAC Mode configuration has Digi Header enabled.

Transmit status based on MAC mode and XBee retries configurations

When working in API mode, a transmit request frame sent by the user is always answered with a
transmit status frame sent by the device, if the frame ID is non-zero.
The following tables report the expected transmit status for unicast transmissions and the maximum
number of MAC and application retries the device attempts.
The tables also report the transmit status reported when the device detects energy above the CCA
threshold (when a CCA failure happens).
The following table applies in either of these cases:
Digi Header is disabled.
l
Digi Header is enabled and XBee Retries (RR parameter) is equal to 0 (default configuration).
l
Destination reachable
Mac ACK
Config
TX status
Enabled 00
(Success)
Disabled 00
(Success)
The following table applies when:
Digi Header is enabled and XBee Retries (RR parameter) is bigger than 0.
l
XBee/XBee-PRO S2C 802.15.4 RF Module User Guide
RR (XBee Retries) controls XBee retries configuration. It is also known
Destination unreachable
Retries
MAC App TX status
up to 0 01 (No
3 acknowledgment
received)
0 0 00 (Success)
Networking
CCA failure
happened
Retries Retries
TX
MAC App status MAC
3 0 02 (CCA 3
failure)
0 0 02 (CCA 3
failure)
App
0
0
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