User's Guide
Table Of Contents
- XBee/XBee-PRO S2C 802.15.4 RF Module User Guide
- Technical specifications
- Hardware
- Configure the XBee/XBee-PRO S2C 802.15.4 RF Module
- Modes
- Operation
- AT commands
- Special commands
- Networking and security commands
- C8 (802.15.4 Compatibility)
- CH (Operating Channel)
- ID (Network ID)
- DH (Destination Address High)
- DL (Destination Address Low)
- MY (Source Address)
- SH (Serial Number High)
- SL (Serial Number Low)
- MM (MAC Mode)
- RR (XBee Retries)
- RN (Random Delay Slots)
- ND (Network Discovery)
- NT (Node Discover Timeout)
- NO (Node Discovery Options)
- DN (Discover Node)
- CE (Coordinator Enable)
- SC (Scan Channels)
- SD (Scan Duration)
- A1 (End Device Association)
- A2 (Coordinator Association)
- AI (Association Indication)
- DA (Force Disassociation)
- FP (Force Poll)
- AS (Active Scan)
- ED (Energy Detect)
- EE (Encryption Enable)
- KY (AES Encryption Key)
- NI (Node Identifier)
- NP (Maximum Packet Payload Bytes)
- RF interfacing commands
- Sleep commands
- Serial interfacing commands
- I/O settings commands
- D0 (DIO0/AD0)
- D1 (DIO1/AD1)
- D2 (DIO2/AD2)
- D3 (DIO3/AD3)
- D4 (DIO4)
- D5 (DIO5/ASSOCIATED_INDICATOR)
- D8 (DIO8/SLEEP_REQUEST)
- P0 (RSSI/PWM0 Configuration)
- P1 (PWM1 Configuration)
- P2 (SPI_MISO)
- M0 (PWM0 Duty Cycle)
- M1 (PWM1 Duty Cycle)
- P5 (SPI_MISO)
- P6 (SPI_MOSI Configuration)
- P7 (SPI_SSEL )
- P8 (SPI_SCLK)
- P9 (SPI_ATTN)
- PR (Pull-up/Down Resistor Enable)
- PD (Pull Up/Down Direction)
- IU (I/O Output Enable)
- IT (Samples before TX)
- IS (Force Sample)
- IO (Digital Output Level)
- IC (DIO Change Detect)
- IR (Sample Rate)
- RP (RSSI PWM Timer)
- I/O line passing commands
- Diagnostic commands
- Command mode options
- Operate in API mode
- API mode overview
- API frame specifications
- Escaped characters in API frames
- Frame descriptions
- TX Request: 64-bit address frame - 0x00
- TX Request: 16-bit address - 0x01
- AT Command frame - 0x08
- AT Command - Queue Parameter Value frame - 0x09
- Remote AT Command Request frame - 0x17
- RX Packet: 64-bit Address frame - 0x80
- Receive Packet: 16-bit address frame - 0x81
- RX (Receive) Packet: 64-bit address IO frame- 0x82
- RX Packet: 16-bit address I/O frame - 0x83
- AT Command Response frame - 0x88
- TX Status frame - 0x89
- Modem Status frame - 0x8A
- Remote Command Response frame - 0x97
- Regulatory information
- Load 802.15.4 firmware on ZB devices
- Migrate from XBee through-hole to surface-mount devices
- PCB design and manufacturing
Operation Networking
XBee/XBee-PRO S2C 802.15.4 RF Module User Guide
43
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 ofretries the device executes in addition to the threeretries
provided by the 802.15.4 MAC. RR (XBee Retries) controls XBee retries configuration. It is also known
as Application Retries.
For each XBeeretry, 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 thedevice detects energy above the CCA
threshold(when a CCA failure happens).
The following table applies in either of these cases:
l Digi Header is disabled.
l Digi Header is enabled and XBee Retries (RR parameter) is equal to 0 (default configuration).
Mac ACK
Config
Destination reachable Destination unreachable
CCA failure
happened
TX status
Retries
TX status
Retries
TX
status
Retries
MAC App MAC App MAC App
Enabled 00
(Success)
up to
3
0 01 (No
acknowledgment
received)
3 0 02 (CCA
failure)
3 0
Disabled 00
(Success)
0 0 00 (Success) 0 0 02 (CCA
failure)
3 0
The following table applies when:
l Digi Header is enabled and XBee Retries (RR parameter) is bigger than 0.