End Device AT Commands and Downlink Command

**This page shows the common commands since Dragino LoRaWAN stack DR-LWS-005. Make sure the end node support stack higher than DR-LWS-005 before checking this page.**

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= 2. How to use AT Commands or Downlink command =

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* **AT Command** : See Devices User Manual for how to connect to device via USB TTL adapter and use. The user manual can be found in each product page of [[Dragino Official Website>>url:http://www.dragino.com/]]

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* **LoRaWAN Downlink Command**: The gateway transfer downlink command in HEX format. This page shows the Downlink Command In HEX format. Please note some LoRaWAN servers use base64 as downlink code so user need to convert HEX to Base64 and use. Below are references for how to use downlink command:

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** Use HEX format to send a downlink: [[TTN v3>>Notes for TTN]]

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** Use Base64 format to send a downlink: [[Chirpstack>>Notes for ChirpStack]], [[How to Convert>>http://wiki.dragino.com/xwiki/bin/view/Main/Notes%20for%20ChirpStack/#H4.1ConvertHEXtoBase64]]?

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** See use note for more serves [[Servers Note>>doc:Main.WebHome]](IoT LoRaWAN Server)

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= 3. Support End Node and firmware version =

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(% border="1" style="background-color:#ffffcc; color:green; width:966px" %)

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|=(% colspan="3" style="width: 963px;" %)(((

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Dragino STM32 base hardware Firmware / LoRaWAN stack list

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|(% style="width:187px" %)(((

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**Model**

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**Description**

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)))|(% style="width:445px" %)(((

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**Firmware Version <~-~-> Stack Version**

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|(% style="width:187px" %)(((

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[[LSN50-v1>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/128-lsn50.html]], [[LSN50-V2>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/155-lsn50-v2.html]],

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)))|(% style="width:330px" %)(((

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Open Source Generic LoRaWAN Sensor Node

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)))|(% style="width:445px" %)(((

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(((

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LSN50 v1.6.0 <~-~-> DR-LWS-003;

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LSN50 v1.7.0 <~-~-> DR-LWS-005; ~-~-> Support since this version

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|(% style="width:187px" %)(((

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[[LGT92>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/142-lgt-92.html]],

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)))|(% style="width:330px" %)(((

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LoRaWAN GPS Tracker

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LGT92 v1.6.3 <~-~-> DR-LWS-003;

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LGT92 v1.6.4 <~-~-> DR-LWS-005;~-~-> Support since this version

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|(% style="width:187px" %)(((

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[[LBT1>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/165-lbt1.html]],

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)))|(% style="width:330px" %)(((

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LoRaWAN BLE Indoor Tracker

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LBT1 v1.0 <~-~-> DR-LWS-005;

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|(% style="width:187px" %)(((

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[[RS485-LN>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/154-rs485-ln.html]],

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)))|(% style="width:330px" %)(((

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LoRaWAN RS485 Modbus Converter

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RS485-LN v1.3 <~-~-> DR-LWS-005;

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|(% style="width:187px" %)(((

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[[LHT65>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/151-lht65.html]],

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LoRaWAN Temperature & Humidity Sensor

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LHT65 v1.7 <~-~-> DR-LWS-003;

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LHT65 v1.8.0 <~-~-> DR-LWS-005;~-~-> Support since this version

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= 4. System Management Commands =

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== 4.1 Change Uplink Interval ==

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Feature: Change LoRaWAN End Node Transmit Interval.

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(% style="color:blue" %)**AT Command: AT+TDC**

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(% border="1" style="background-color:#ffffcc; color:green; width:727.222px" %)

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|=(% colspan="3" style="width: 724px;" %)AT+TDC

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|(% style="width:165px" %)**Command Example**|(% style="width:227px" %)**Function**|(% style="width:329px" %)**Response**

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|(% style="width:165px" %)AT+TDC=?|(% style="width:227px" %)Show current transmit Interval|(% style="width:329px" %)30000(((

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OK

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the interval is 30000ms = 30s

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)))

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|(% style="width:165px" %)AT+TDC=60000|(% style="width:227px" %)Set Transmit Interval|(% style="width:329px" %)OK(((

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Set transmit interval to 60000ms = 60 seconds

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(% style="color:blue" %)**Downlink Command: 0x01**

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Format: Command Code (0x01) followed by 3 bytes time value.

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If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.

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* **Example 1**: Downlink Payload:** 0100001E** ~/~/ Set Transmit Interval (TDC) = 30 seconds

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* **Example 2**: Downlink Payload:** 0100003C** ~/~/ Set Transmit Interval (TDC) = 60 seconds

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== 4.2 Reboot End Node ==

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Feature: Reboot End Node to perform a new OTAA or ABP Join.

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(% style="color:blue" %)**AT Command: ATZ**

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(% border="1" style="background-color:#ffffcc; color:green; width:546px" %)

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|=(% colspan="3" style="width: 543px;" %)ATZ: Trig a reset of the MCU

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|(% style="width:157px" %)**Command Example**|(% style="width:92px" %)**Function**|(% style="width:294px" %)**Response**

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|(% style="width:157px" %)ATZ|(% style="width:92px" %)Reset MCU|(% style="width:294px" %)(((

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Device reset and show booting info

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LSN50 Device/LoRa ST Module

Image Version: XX

Frequency Band: XX

DevEui= XX XX XX XX XX XX XX XX

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(% style="color:blue" %)**Downlink Command: 0x04**

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Format: Command Code (0x04) followed by FF.

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If the downlink payload=**04FF**, the end node will reboot.

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== 4.3 Reset to factory Default ==

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Feature: Reset the parameters to Factory Default, factory default value depends on the firmware settings, the OTAA and ABP keys will reserve after this command.

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(% style="color:blue" %)**AT Command: AT+FDR**

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(% border="1" style="background-color:#ffffcc; color:green; width:789px" %)

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|=(% colspan="3" style="width: 786px;" %)Reset to factory default

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|(% style="width:154px" %)**Command Example**|(% style="width:175px" %)**Function**|(% style="width:456px" %)**Response**

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|(% style="width:154px" %)AT+FDR|(% style="width:175px" %)Reset to factory default|(% style="width:456px" %)(((

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Device reset to factory default parameters and show booting info

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LSN50 Device/LoRa ST Module

Image Version: XX

Frequency Band: XX

DevEui= XX XX XX XX XX XX XX XX

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Please set the parameters or reset Device to apply change

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(% style="color:blue" %)**Downlink Command: 0x04**

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Format: Command Code (0x04) followed by FE.

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If the downlink payload=**04FE**, Reset Parameters to Factory Default, Keys Reserve.

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== 4.4 Show Firmware Version ==

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Feature: Show firmware version. No downlink command yet.

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(% style="color:blue" %)**AT Command: AT+VER**

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(% border="1" style="background-color:#ffffcc; color:green; width:542px" %)

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|=(% colspan="3" style="width: 539px;" %)AT+VER: Image Version and Frequency Band

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|(% style="width:157px" %)**Command Example**|(% style="width:295px" %)**Function**|(% style="width:86px" %)**Response**

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|(% style="width:157px" %)AT+VER=?|(% style="width:295px" %)Show Image version and Frequency Band|(% style="width:86px" %)(((

1.3 EU868

OK

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(% style="color:blue" %)**Downlink Command: 0x26 (Valid in 006 stack)**

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Downlink Format: 0x26

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Device will reply with firmware version info, device info. frequency band info. detail please check device user manual. Total 5 bytes Example: If device is of firmware version 1.1.0 Upload: xx ~-~- yy ~-~- zz ~-~- 110 total 5 bytes

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**xx: Software Type:**

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* 0x00 01: LGT92 Version

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* 0x00 02: LBT1

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* 0x00 03: LSE01/LDDS75/LDDS20/LSPH01/LLMS01/LSNPK01

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**yy: Frequency Band:**

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* 0x01: EU868

* 0x02: US915

* 0x03: IN865

* 0x04: AU915

* 0x05: KZ865

* 0x06: RU864

* 0x07: AS923

* 0x08: AS923-1

* 0x09: AS923-2

* 0xa0: AS923-3

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**zz: Subband**

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firmware version: v1.1.0 ~-~-> 110

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== 4.5 Show System Configure ==

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Feature: Show All configure. No downlink command yet.

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(% style="color:blue" %)**AT Command: AT+CFG**

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(% border="1" style="background-color:#ffffcc; color:green; width:599.222px" %)

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|=(% colspan="3" style="width: 596px;" %)AT+CFG: Print all configurations

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|(% style="width:160px" %)**Command Example**|(% style="width:154px" %)**Function**|(% style="width:280px" %)**Response**

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|(% style="width:160px" %)AT+CFG|(% style="width:154px" %)Show all configures|(% style="width:280px" %)(((

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AT+DEUI = XX XX XX XX XX XX XX XX

AT+DADDR=XXXXXXXX

……….

AT+RX2WTO=X

AT+CHS=868100000

OK

)))

= 5. Keys, IDs and EUIs management =

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== 5.1 Application EUI ==

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Feature: Get or Set the Application EUI.

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(% style="color:blue" %)**AT Command: AT+APPEUI**

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(% border="1" style="background-color:#ffffcc; color:green; width:686.222px" %)

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|=(% colspan="3" style="width: 683px;" %)AT+APPEUI

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|(% style="width:305px" %)**Command Example**|(% style="width:186px" %)**Function**|(% style="width:191px" %)**Response**

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|(% style="width:305px" %)AT+APPEUI=?|(% style="width:186px" %)Get the Application EUI|(% style="width:191px" %)00 b3 d5 00 00 00 00 00(((

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OK

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|(% style="width:305px" %)AT+APPEUI=00 b3 d5 7e f0 00 4d 34|(% style="width:186px" %)Set the Application EUI|(% style="width:191px" %)OK

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== 5.2 Application Key ==

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Feature: Get or Set the Application Key.

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(% style="color:blue" %)**AT Command: AT+APPKEY**

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(% border="1" style="background-color:#ffffcc; color:green; width:976.222px" %)

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|=(% colspan="3" style="width: 973px;" %)AT+APPKEY

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|(% style="width:441px" %)**Command Example**|(% style="width:180px" %)**Function**|(% style="width:350px" %)**Response**

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|(% style="width:441px" %)AT+APPKEY=?|(% style="width:180px" %)Get the Application Key|(% style="width:350px" %)00 35 55 55 22 23 55 53 43 24 23 42 34 35 35 35(((

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OK

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|(% style="width:441px" %)AT+APPKEY=00 35 55 55 22 23 55 53 43 24 23 42 34 35 35 35|(% style="width:180px" %)Set the Application Key|(% style="width:350px" %)OK

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== 5.3 Application Session Key ==

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Feature: Get or Set the Application Session Key.

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(% style="color:blue" %)**AT Command: AT+APPSKEY**

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(% border="1" style="background-color:#ffffcc; color:green; width:1040.22px" %)

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|=(% colspan="3" style="width: 1037px;" %)AT+APPSKEY

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|(% style="width:451px" %)**Command Example**|(% style="width:231px" %)**Function**|(% style="width:354px" %)**Response**

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|(% style="width:451px" %)AT+APPSKEY=?|(% style="width:231px" %)Get the Application Session Key|(% style="width:354px" %)00 7d dc 73 33 d3 eb 9e 14 38 d5 a4 3e 62 5b e2(((

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OK

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)))

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|(% style="width:451px" %)AT+APPSKEY=00 7d dc 73 33 d3 eb 9e 14 38 d5 a4 3e 62 5b e2|(% style="width:231px" %)Set the Application Session Key|(% style="width:354px" %)(While Error in format, return AT_PARAM_ERROR)(((

OK

)))

== 5.4 Device Address ==

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Feature: Get or Set the Device Address.

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(% style="color:blue" %)**AT Command: AT+DADDR**

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(% border="1" style="background-color:#ffffcc; color:green; width:795.222px" %)

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|=(% colspan="3" style="width: 792px;" %)AT+DADDR

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|(% style="width:192px" %)**Command Example**|(% style="width:241px" %)**Function**|(% style="width:359px" %)**Response**

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|(% style="width:192px" %)AT+DADDR=?|(% style="width:241px" %)Get the Application Session Key.|(% style="width:359px" %)(While Error in format, return AT_PARAM_ERROR)(((

A8 40 41 FF

OK

)))

|(% style="width:192px" %)AT+DADDR=A8 40 41 FF|(% style="width:241px" %)Set the Application Session Key.|(% style="width:359px" %)OK

== 5.5 Device EUI ==

Feature: Get or Set the Device EUI.

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(% style="color:blue" %)**AT Command: AT+DEUI**

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(% border="1" style="background-color:#ffffcc; color:green; width:1035.22px" %)

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|=(% colspan="3" style="width: 1032px;" %)AT+DEUI

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|(% style="width:250px" %)**Command Example**|(% style="width:147px" %)**Function**|(% style="width:634px" %)**Response**

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|(% style="width:250px" %)AT+DEUI=?|(% style="width:147px" %)Get the Device EUI.|(% style="width:634px" %)00 44 34 22 33 45 55 55(((

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OK

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)))

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|(% style="width:250px" %)AT+DEUI=A8 40 41 FF FF 12 34 56|(% style="width:147px" %)Set the Device EUI.|(% style="width:634px" %)(System will write new value to Device EUI,While Error in format, return AT_PARAM_ERROR)(((

OK

)))

== 5.6 Network ID ==

Feature: Get or Set the Network ID.(You can enter this command change only after successful network connection)

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(% style="color:blue" %)**AT Command: AT+NWKID**

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(% border="1" style="background-color:#ffffcc; color:green; width:448.222px" %)

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|=(% colspan="3" style="width: 445px;" %)AT+NWKID

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|(% style="width:191px" %)**Command Example**|(% style="width:153px" %)**Function**|(% style="width:101px" %)**Response**

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|(% style="width:191px" %)AT+NWKID=?|(% style="width:153px" %)Get the Network ID.|(% style="width:101px" %)a8 40 41 ff(((

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OK

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)))

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|(% style="width:191px" %)AT+NWKID=A8 40 41 FF|(% style="width:153px" %)Set the Network ID.|(% style="width:101px" %)OK

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== 5.7 Network Session Key ==

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Feature: Get or Set the Network Session Key

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(% style="color:blue" %)**AT Command: AT+NWKSKEY**

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(% border="1" style="background-color:#ffffcc; color:green; width:1017.22px" %)

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|=(% colspan="3" style="width: 1014px;" %)AT+NWKSKEY

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|(% style="width:455px" %)**Command Example**|(% style="width:215px" %)**Function**|(% style="width:343px" %)**Response**

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|(% style="width:455px" %)AT+NWKSKEY=?|(% style="width:215px" %)Get the Network Session Key.|(% style="width:343px" %)00 4f 19 25 52 ce 97 09 d7 fa 84 71 db 51 02 92(((

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OK

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)))

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|(% style="width:455px" %)AT+NWKSKEY=A8 40 41 FF FF 12 34 56 00 01 02 04 05 06 06 07|(% style="width:215px" %)Set the Network Session Key.|(% style="width:343px" %)OK

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= 6. Joining and sending date on LoRaWAN network =

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== 6.1 Confirm Mode ==

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=== 6.1.1 AT+CFM command before DR-LWS007 software stack ===

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Feature: Get or Set the confirmation mode (0-1).

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(% style="color:blue" %)**AT Command: AT+CFM**

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(% border="1" style="background-color:#ffffcc; color:green; width:710.222px" %)

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|=(% colspan="3" style="width: 707px;" %)AT+CFM

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|(% style="width:155px" %)**Command Example**|(% style="width:205px" %)**Function**|(% style="width:346px" %)**Response**

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|(% style="width:155px" %)AT+CFM=?|(% style="width:205px" %)Get the confirmation mode|(% style="width:346px" %)0(((

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OK

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)))

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|(% style="width:155px" %)AT+CFM=1|(% style="width:205px" %)Set the confirmation mode|(% style="width:346px" %)OK

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|(% style="width:155px" %)AT+CFM=2|(% style="width:205px" %)Set the confirmation mode|(% style="width:346px" %)While Error in format, return AT_PARAM_ERROR

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(% style="color:blue" %)**Downlink Command: 0x05**

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Format: Command Code (0x05) followed by 2 bytes mode value.

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If the downlink payload=0501, it means set end node to use confirm mode, while type code is 05.

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* **Example 1:** Downlink Payload: 0501 ~/~/ Set AT+CFM=1

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* **Example 2:** Downlink Payload: 0500 ~/~/ Set AT+CFM=0

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=== 6.1.2 AT+CFM command since DR-LWS007 software stack ===

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(% style="color:blue" %)**AT Command: AT+CFM**

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(% border="1" style="background-color:#ffffcc; color:green; width:710.222px" %)

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|=(% colspan="3" style="width: 707px;" %)AT+CFM

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|(% style="width:160px" %)**Command Example**|(% style="width:198px" %)**Function**|(% style="width:349px" %)**Response**

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|(% style="width:160px" %)(((

AT+CFM=1,0,0

value1

)))|(% style="width:198px" %)confirmed uplink|(% style="width:349px" %)(((

1

OK

)))

|(% style="width:160px" %)(((

AT+CFM=0,?,0

value2

)))|(% style="width:198px" %)set max retry , range: 0 ~~ 7|(% style="width:349px" %)(((

0~~7

OK

)))

|(% style="width:160px" %)(((

AT+CFM=0,0,1

value3

)))|(% style="width:198px" %)uplink fcnt increase by 1 for each retry|(% style="width:349px" %)(((

1

OK

)))

(% style="color:blue" %)**Downlink Command: 0x05**

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Format: Command Code (0x05) followed by 2 bytes mode value.

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If the downlink payload=05010101, it means set end node to use confirm mode, while type code is 05.

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* **Example 1:** Downlink Payload: 05010101 ~/~/ Set AT+CFM=1,1,1

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* **Example 2:** Downlink Payload: 05000700 ~/~/ Set AT+CFM=0,7,0

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== 6.2 Confirm Status ==

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Feature: Get confirmation status of the last AT+SEND (0-1).

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(% style="color:blue" %)**AT Command: AT+CFS**

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(% border="1" style="background-color:#ffffcc; color:green; width:463px" %)

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|=(% colspan="3" style="width: 460px;" %)AT+CFS

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|(% style="width:156px" %)**Command Example**|(% style="width:193px" %)**Function**|(% style="width:107px" %)**Response**

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|(% style="width:156px" %)AT+CFS=?|(% style="width:193px" %)Get confirmation status|(% style="width:107px" %)0(((

OK

)))

== 6.3 Join LoRa® Network ==

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Feature: Join network.

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(% style="color:blue" %)**AT Command: AT+JOIN**

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(% border="1" style="background-color:#ffffcc; color:green; width:647.222px" %)

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|=(% colspan="3" style="width: 644px;" %)AT+JOIN

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|(% style="width:163px" %)**Command Example**|(% style="width:147px" %)**Function**|(% style="width:334px" %)**Response**

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|(% style="width:163px" %)AT+JOIN ?|(% style="width:147px" %)Get imformation.|(% style="width:334px" %)AT+JOIN: Join network(((

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OK

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While Error in format, return AT_BUSY_ERROR

)))

== 6.4 LoRa® Network Join Mode ==

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Feature: Get or Set the Network Join Mode. (0: ABP, 1: OTAA).

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(% style="color:blue" %)**AT Command: AT+NJM**

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(% border="1" style="background-color:#ffffcc; color:green; width:753.222px" %)

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|=(% colspan="3" style="width: 750px;" %)AT+NJM

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|(% style="width:162px" %)**Command Example**|(% style="width:227px" %)**Function**|(% style="width:361px" %)**Response**

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|(% style="width:162px" %)AT+NJM=?|(% style="width:227px" %)Get the Network Join Mode|(% style="width:361px" %)1(((

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OK

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)))

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|(% style="width:162px" %)AT+NJM=0|(% style="width:227px" %)Set the Network Join Mode|(% style="width:361px" %)OK

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|(% style="width:162px" %)AT+NJM=2|(% style="width:227px" %)Set the Network Join Mode|(% style="width:361px" %)While Error in format, return AT_PARAM_ERROR

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(% style="color:blue" %)**Downlink Command: 0x20**

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Format: Command Code (0x20) followed by 1 bytes mode value.

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If the downlink payload=2000, it means set the Network Join Mode, while type code is 20.

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* **Example 1: **Downlink Payload: **2000 ** ~/~/ Set AT+NJM=0

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* **Example 2:** Downlink Payload: **2001** ~/~/ Set AT+NJM=1

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== 6.5 LoRa® Network Join Status ==

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Feature: LoRa® Network Join Status.

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(% style="color:blue" %)**AT Command: AT+NJS**

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(% border="1" style="background-color:#ffffcc; color:green; width:498.222px" %)

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|=(% colspan="3" style="width: 495px;" %)AT+NJS

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|(% style="width:169px" %)**Command Example**|(% style="width:164px" %)**Function**|(% style="width:161px" %)**Response**

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|(% style="width:169px" %)AT+NJS=?|(% style="width:164px" %)Get the join status.|(% style="width:161px" %)0(((

OK

)))

== 6.6 Print Last Received Data in Raw Format ==

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Feature: Print Last Received Data in Raw Format<port:data>.

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(% style="color:blue" %)**AT Command: AT+RECV**

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(% border="1" style="background-color:#ffffcc; color:green; width:587.222px" %)

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|=(% colspan="3" style="width: 584px;" %)AT+RECV

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|(% style="width:161px" %)**Command Example**|(% style="width:272px" %)**Function**|(% style="width:150px" %)**Response**

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|(% style="width:161px" %)AT+RECV=?|(% style="width:272px" %)print last received data in raw format.|(% style="width:150px" %)0:(((

OK

)))

== 6.7 Print Last Received Data in Binary Format ==

604

605

606

Feature: Print Last Received Data in Binary Format<port:data>.

607

608

609

(% style="color:blue" %)**AT Command: AT+RECVB**

610

611

(% border="1" style="background-color:#ffffcc; color:green; width:793.222px" %)

612

|=(% colspan="3" style="width: 790px;" %)AT+RECVB

613

|(% style="width:173px" %)**Command Example**|(% style="width:497px" %)**Function**|(% style="width:120px" %)**Response**

614

|(% style="width:173px" %)AT+RECVB=?|(% style="width:497px" %)print last received data in binary format (with hexadecimal values).|(% style="width:120px" %)2: 0010(((

OK

)))

== 6.8 Send Text Data ==

620

621

622

Feature: Send Text Data<port:data>.

623

624

625

(% style="color:blue" %)**AT Command: AT+SEND**

626

627

(% border="1" style="background-color:#ffffcc; color:green; width:991.222px" %)

628

|=(% colspan="3" style="width: 988px;" %)AT+SEND

629

|(% style="width:201px" %)**Command Example**|(% style="width:340px" %)**Function**|(% style="width:446px" %)**Response**

630

|(% style="width:201px" %)AT+SEND=12:hello world|(% style="width:340px" %)Send text data along with the application port.|(% style="width:446px" %)OK(((

631

While Error in format, return

632

633

AT_BUSY_ERROR/AT_BUSY_ERROR/AT_NO_NETWORK_JOINED

)))

== 6.9 Send Hexadecimal Data ==

640

641

642

Feature: Send hexadecimal data along with the application port.

643

644

645

(% style="color:blue" %)**AT Command: AT+SENDB**

646

647

(% border="1" style="background-color:#ffffcc; color:green; width:1101px" %)

648

|=(% colspan="3" style="width: 1098px;" %)AT+SENDB

649

|(% style="width:257px" %)**Command Example**|(% style="width:394px" %)**Function**|(% style="width:446px" %)**Response**

650

|(% style="width:257px" %)AT+SENDB=12:abcdef0123456789|(% style="width:394px" %)Send hexadecimal data along with the application port.|(% style="width:446px" %)OK

651

|(% style="width:257px" %)AT+SENDB=abcdef0123456789|(% style="width:394px" %)Send hexadecimal data along with the application port.|(% style="width:446px" %)While Error in format, return(((

652

AT_PARAM_ERROR AT_BUSY_ERROR/AT_NO_NETWORK_JOINED

)))

= 7. LoRaWAN network management =

659

660

== 7.1 Adaptive Data Rate ==

661

662

663

Feature: Get or Set the Adaptive Data Rate setting. (0: off, 1: on).

664

665

666

(% style="color:blue" %)**AT Command: AT+ADR**

667

668

(% border="1" style="background-color:#ffffcc; color:green; width:683.222px" %)

669

|=(% colspan="3" style="width: 680px;" %)AT+ADR

670

|(% style="width:162px" %)**Command Example**|(% style="width:266px" %)**Function**|(% style="width:250px" %)**Response**

671

|(% style="width:162px" %)AT+ADR=?|(% style="width:266px" %)Get the Adaptive Data Rate setting.|(% style="width:250px" %)1(((

672

OK

673

)))

674

|(% style="width:162px" %)AT+ADR=0|(% style="width:266px" %)Set the Adaptive Data Rate setting.|(% style="width:250px" %)OK

675

|(% style="width:162px" %)AT+ADR=2|(% style="width:266px" %)Set the Adaptive Data Rate setting.|(% style="width:250px" %)While Error in format, return(((

AT_PARAM_ERROR

)))

(% style="color:blue" %)**Downlink Command: 0x22**

680

681

If the downlink payload=2201, it means setting the adaptive data rate to 1, while type code is 22.

682

683

* **Example 1**: Downlink Payload: **2201** ~/~/ Set AT+ADR=1.

684

* **Example 2**: Downlink Payload: **2200FFFF** ~/~/ Set AT+ADR=0.

685

686

687

== 7.2 LoRa® Class ==

688

689

690

Feature: Get or Set the Device Class(Currently only support class A, class C).

691

692

693

(% style="color:blue" %)**AT Command: AT+CLASS**

694

695

(% border="1" style="background-color:#ffffcc; color:green; width:507.222px" %)

696

|=(% colspan="3" style="width: 504px;" %)AT+CLASS

697

|(% style="width:163px" %)**Command Example**|(% style="width:166px" %)**Function**|(% style="width:175px" %)**Response**

698

|(% style="width:163px" %)AT+CLASS=?|(% style="width:166px" %)Get the Device Class.|(% style="width:175px" %)A(((

699

OK

700

)))

701

|(% style="width:163px" %)AT+CLASS=C|(% style="width:166px" %)Set the Device Class.|(% style="width:175px" %)OK(((

)))

== 7.3 Duty Cycle Setting ==

707

708

709

Feature: Get or Set the ETSI Duty Cycle setting** - 0**=disable, **1**=enable - Only for testing.

710

711

712

(% style="color:blue" %)**AT Command: AT+DCS**

713

714

(% border="1" style="background-color:#ffffcc; color:green; width:515.222px" %)

715

|=(% colspan="3" style="width: 512px;" %)AT+DCS

716

|(% style="width:165px" %)**Command Example**|(% style="width:239px" %)**Function**|(% style="width:107px" %)**Response**

717

|(% style="width:165px" %)AT+DCS=?|(% style="width:239px" %)Get the ETSI Duty Cycle setting.|(% style="width:107px" %)1(((

718

OK

719

)))

720

|(% style="width:165px" %)AT+DCS=1|(% style="width:239px" %)Set the ETSI Duty Cycle setting.|(% style="width:107px" %)OK(((

)))

== 7.4 Data Rate ==

Feature: Get or Set the Data Rate. (0-7 corresponding to DR_X) .

729

730

(% style="color:red" %)

731

**Notice:**

732

733

* User need to set Adaptive Data Rate(ADR)=0 first. otherwise device will respond to server's ADR command and change the DR according to server auto-adjustment.

734

* Data Rate specifies Spreading Factor. The mapping varies in different frequency bands. User can check this link for detail. [[rp2-1.0.3-lorawan-regional-parameters.pdf>>https://lora-alliance.org/resource_hub/rp2-1-0-3-lorawan-regional-parameters/]]

735

736

(% style="color:blue" %)**AT Command: AT+DR**

737

738

(% border="1" style="background-color:#ffffcc; color:green; width:466.222px" %)

739

|=(% colspan="3" style="width: 463px;" %)AT+DR

740

|(% style="width:156px" %)**Command Example**|(% style="width:167px" %)**Function**|(% style="width:140px" %)**Response**

741

|(% style="width:156px" %)AT+DR=?|(% style="width:167px" %)Get the Data Rate.|(% style="width:140px" %)5(((

742

OK

743

)))

744

|(% style="width:156px" %)AT+DR=2|(% style="width:167px" %)Set the Data Rate.|(% style="width:140px" %)OK(((

)))

(% style="color:blue" %)**Downlink Command: 0x2200aaFF**

749

750

If the downlink payload=220001FF, it means setting the data rate to 1, while type code is 22 00 aa FF.

751

752

* **Example 1**: Downlink Payload: **220001FF** ~/~/ Set AT+DR=1.

753

* **Example 2**: Downlink Payload: **220000FF** ~/~/ Set AT+DR=0.

754

755

756

== 7.5 Frame Counter Downlink ==

757

758

759

Feature: Get or Set the Frame Counter Downlink.

760

761

762

(% style="color:blue" %)**AT Command: AT+FCD**

763

764

(% border="1" style="background-color:#ffffcc; color:green; width:693.222px" %)

765

|=(% colspan="3" style="width: 690px;" %)AT+FCD

766

|(% style="width:162px" %)**Command Example**|(% style="width:258px" %)**Function**|(% style="width:269px" %)**Response**

767

|(% style="width:162px" %)AT+FCD=?|(% style="width:258px" %)Get the Frame Counter Downlink.|(% style="width:269px" %)0(((

768

OK

769

)))

770

|(% style="width:162px" %)AT+FCD=10|(% style="width:258px" %)Set the Frame Counter Downlink.|(% style="width:269px" %)(System will write new value to FCD)(((

OK

)))

== 7.6 Frame Counter Uplink ==

776

777

Feature: Get or Set the Frame Counter Uplink.

778

779

780

(% style="color:blue" %)**AT Command: AT+FCU**

781

782

(% border="1" style="background-color:#ffffcc; color:green; width:534.222px" %)

783

|=(% colspan="3" style="width: 531px;" %)AT+FCU

784

|(% style="width:177px" %)**Command Example**|(% style="width:239px" %)**Function**|(% style="width:113px" %)**Response**

785

|(% style="width:177px" %)AT+FCU=?|(% style="width:239px" %)Get the Frame Counter Uplink.|(% style="width:113px" %)0(((

786

OK

787

)))

788

|(% style="width:177px" %)AT+FCU=10|(% style="width:239px" %)Set the Frame Counter Uplink.|(% style="width:113px" %)OK(((

)))

== 7.7 Join Accept Delay1 ==

794

795

796

Feature: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms.

797

798

799

(% style="color:blue" %)**AT Command: AT+JN1DL**

800

801

(% border="1" style="background-color:#ffffcc; color:green; width:537.222px" %)

802

|=(% colspan="3" style="width: 534px;" %)AT+JN1DL

803

|(% style="width:164px" %)**Command Example**|(% style="width:229px" %)**Function**|(% style="width:140px" %)**Response**

804

|(% style="width:164px" %)AT+JN1DL=?|(% style="width:229px" %)Get the Join Accept Delay.|(% style="width:140px" %)5000(((

805

OK

806

)))

807

|(% style="width:164px" %)AT+JN1DL=10000|(% style="width:229px" %)Set the Join Accept Delay.|(% style="width:140px" %)OK(((

)))

== 7.8 Join Accept Delay2 ==

813

814

815

Feature: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms.

816

817

818

(% style="color:blue" %)**AT Command: AT+JN2DL**

819

820

(% border="1" style="background-color:#ffffcc; color:green; width:538.222px" %)

821

|=(% colspan="3" style="width: 535px;" %)AT+JN2DL

822

|(% style="width:160px" %)**Command Example**|(% style="width:228px" %)**Function**|(% style="width:146px" %)**Response**

823

|(% style="width:160px" %)AT+JN2DL=?|(% style="width:228px" %)Get the Join Accept Delay.|(% style="width:146px" %)6000(((

824

OK

825

)))

826

|(% style="width:160px" %)AT+JN2DL=20000|(% style="width:228px" %)Set the Join Accept Delay.|(% style="width:146px" %)OK(((

)))

== 7.9 Public Network Mode ==

832

833

834

Feature: Get or Set the public network mode. (0: off, 1: on). A Public LoRaWAN network use 0x34 as syncword. Default Settings; PNM=1

835

836

(% style="color:red" %)**Notice: If user build their own LoRaWAN server but still use syncword=0x34, this is still considered a public LoRaWAN network.**

837

838

839

(% style="color:blue" %)**AT Command: AT+PNM**

840

841

(% border="1" style="background-color:#ffffcc; color:green; width:667.222px" %)

842

|=(% colspan="3" style="width: 664px;" %)AT+PNM

843

|(% style="width:166px" %)**Command Example**|(% style="width:225px" %)**Function**|(% style="width:272px" %)**Response**

844

|(% style="width:166px" %)AT+PNM=?|(% style="width:225px" %)Get the public network mode.|(% style="width:272px" %)1(((

845

OK

846

)))

847

|(% style="width:166px" %)AT+PNM=1|(% style="width:225px" %)(((

848

Set the public network mode.

849

850

Set syncword=0x34

851

)))|(% style="width:272px" %)(System will write new value to PNM)(((

OK

)))

|(% style="width:166px" %)AT+PNM=0|(% style="width:225px" %)Set to use private network autoset syncword=0x12|(% style="width:272px" %)

857

858

859

== 7.10 Receive Delay1 ==

860

861

862

Feature: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms

863

864

865

(% style="color:blue" %)**AT Command: AT+RX1DL**

866

867

(% border="1" style="background-color:#ffffcc; color:green; width:408.222px" %)

868

|=(% colspan="3" style="width: 405px;" %)AT+RX1DL

869

|(% style="width:155px" %)**Command Example**|(% style="width:128px" %)**Function**|(% style="width:122px" %)**Response**

870

|(% style="width:155px" %)AT+RX1DL=?|(% style="width:128px" %)Get the delay.|(% style="width:122px" %)1000(((

871

OK

872

)))

873

|(% style="width:155px" %)AT+RX1DL=1500|(% style="width:128px" %)Set the delay.|(% style="width:122px" %)OK(((

)))

== 7.11 Receive Delay2 ==

879

880

881

Feature: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms

882

883

884

(% style="color:blue" %)**AT Command: AT+RX2DL**

885

886

(% border="1" style="background-color:#ffffcc; color:green; width:481.222px" %)

887

|=(% colspan="3" style="width: 478px;" %)AT+RX2DL

888

|(% style="width:175px" %)**Command Example**|(% style="width:152px" %)**Function**|(% style="width:150px" %)**Response**

889

|(% style="width:175px" %)AT+RX2DL=?|(% style="width:152px" %)Get the delay.|(% style="width:150px" %)2000(((

890

OK

891

)))

892

|(% style="width:175px" %)AT+RX2DL=2500|(% style="width:152px" %)Set the delay.|(% style="width:150px" %)OK(((

)))

== 7.12 Rx2 Window Data Rate ==

898

899

900

Feature: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)

901

902

903

(% style="color:blue" %)**AT Command: AT+RX2DR**

904

905

(% border="1" style="background-color:#ffffcc; color:green; width:525.222px" %)

906

|=(% colspan="3" style="width: 522px;" %)AT+RX2DR

907

|(% style="width:160px" %)**Command Example**|(% style="width:232px" %)**Function**|(% style="width:130px" %)**Response**

908

|(% style="width:160px" %)AT+RX2DR=?|(% style="width:232px" %)Get the Rx2 window data rate.|(% style="width:130px" %)2(((

909

OK

910

)))

911

|(% style="width:160px" %)AT+RX2DR=6|(% style="width:232px" %)Set the Rx2 window data rate.|(% style="width:130px" %)OK(((

)))

== 7.13 Rx2 Window Frequency ==

917

918

919

Feature: Get or Set the Rx2 window frequency

920

921

922

(% style="color:blue" %)**AT Command: AT+RX2FQ**

923

924

(% border="1" style="background-color:#ffffcc; color:green; width:587.222px" %)

925

|=(% colspan="3" style="width: 584px;" %)AT+RX2FQ

926

|(% style="width:183px" %)**Command Example**|(% style="width:240px" %)**Function**|(% style="width:160px" %)**Response**

927

|(% style="width:183px" %)AT+RX2FQ=?|(% style="width:240px" %)Get the Rx2 window frequency.|(% style="width:160px" %)434665000(((

928

OK

929

)))

930

|(% style="width:183px" %)AT+RX2FQ=434665000|(% style="width:240px" %)Set the Rx2 window frequency.|(% style="width:160px" %)OK(((

)))

== 7.14 Transmit Power ==

936

937

938

Feature: Get or Set the Transmit Power(0-5, MAX:0, MIN:5, according to LoRaWAN Spec, or 40=10dB, 41 = 11dB, …, 50 = 20dB which is out of LoRaWAN spec. )

939

940

(% style="color:red" %)**Notice: Transmit Power might be changed by ADR from LoRaWAN server. So manually change TXP also remember to set AT+ADR=0 in sensor**

941

942

943

(% style="color:blue" %)**AT Command: AT+TXP**

944

945

(% border="1" style="background-color:#ffffcc; color:green; width:465.222px" %)

946

|=(% colspan="3" style="width: 462px;" %)AT+TXP

947

|(% style="width:161px" %)**Command Example**|(% style="width:189px" %)**Function**|(% style="width:112px" %)**Response**

948

|(% style="width:161px" %)AT+TXP=?|(% style="width:189px" %)Get the Transmit Power.|(% style="width:112px" %)0(((

949

OK

950

)))

951

|(% style="width:161px" %)AT+TXP=1|(% style="width:189px" %)Set the Transmit Power.|(% style="width:112px" %)OK(((

)))

Downlink Payload. The 4th byte of 0x22 downlink.

956

957

If the downlink payload=22000100, it means setting the TXP to 0.

958

959

* **Example 1**: Downlink Payload: **22000102** ~/~/ Set AT+TXP=2.

960

* **Example 2**: Downlink Payload: **220000FF** ~/~/ Set AT+TXP=0.

961

962

963

== 7.15 RSSI of the Last Received Packet ==

964

965

966

Feature: Get or Set the Rx2 window frequency

967

968

969

(% style="color:blue" %)**AT Command:AT+RSSI**

970

971

(% border="1" style="background-color:#ffffcc; color:green; width:557.222px" %)

972

|=(% colspan="3" style="width: 554px;" %)AT+RSSI

973

|(% style="width:164px" %)**Command Example**|(% style="width:289px" %)**Function**|(% style="width:100px" %)**Response**

974

|(% style="width:164px" %)AT+RSSI=?|(% style="width:289px" %)Get the RSSI of the last received packet.|(% style="width:100px" %)0(((

OK

)))

== 7.16 SNR of the Last Received Packet ==

980

981

982

Feature: Get the SNR of the last received packet

983

984

985

(% style="color:blue" %)**AT Command: AT+SNR**

986

987

(% border="1" style="background-color:#ffffcc; color:green; width:571.222px" %)

988

|=(% colspan="3" style="width: 568px;" %)AT+SNR

989

|(% style="width:164px" %)**Command Example**|(% style="width:290px" %)**Function**|(% style="width:113px" %)**Response**

990

|(% style="width:164px" %)AT+SNR=?|(% style="width:290px" %)Get the RSSI of the last received packet.|(% style="width:113px" %)0(((

OK

)))

== 7.17 Application Port ==

996

997

998

Feature: Get or set the application port.

999

1000

1001

(% style="color:blue" %)**AT Command: AT+PORT**

1002

1003

(% border="1" style="background-color:#ffffcc; color:green; width:500.222px" %)

1004

|=(% colspan="3" style="width: 497px;" %)AT+PORT

1005

|(% style="width:157px" %)**Command Example**|(% style="width:204px" %)**Function**|(% style="width:135px" %)**Response**

1006

|(% style="width:157px" %)AT+PORT=?|(% style="width:204px" %)Get the application port|(% style="width:135px" %)21(((

1007

OK

1008

)))

1009

|(% style="width:157px" %)AT+PORT=21|(% style="width:204px" %)Set the application port|(% style="width:135px" %)OK

1010

1011

(% style="color:blue" %)**Downlink Command: 0x23**

1012

1013

Format: Command Code (0x23) followed by 1 bytes port value.

1014

1015

If the downlink payload=2301, it means set the application port to 1, while type code is 23.

1016

1017

* **Example 1**: Downlink Payload: **2301** ~/~/ set the application port to 1

1018

* **Example 2**: Downlink Payload:** 2305** ~/~/ set the application port to 5

1019

1020

1021

== 7.18 Single Channel Mode ==

1022

1023

1024

Feature:Get or Set Frequency (Unit: Hz) for Single Channel Mode.

1025

1026

1027

(% style="color:blue" %)**AT Command: AT+CHS**

1028

1029

(% border="1" style="background-color:#ffffcc; color:green; width:603.222px" %)

1030

|=(% colspan="3" style="width: 600px;" %)AT+CHS

1031

|(% style="width:182px" %)**Command Example**|(% style="width:295px" %)**Function**|(% style="width:122px" %)**Response**

1032

|(% style="width:182px" %)AT+CHS=?|(% style="width:295px" %)Get Frequency for Single Channel Mode|(% style="width:122px" %)0(((

1033

OK

1034

)))

1035

|(% style="width:182px" %)AT+CHS=868100000|(% style="width:295px" %)Set Frequency for Single Channel Mode|(% style="width:122px" %)OK

1036

1037

1038

== 7.19 Eight Channel Mode ==

1039

1040

1041

Feature: Get or Set eight channels mode,Only for US915,AU915,CN470.

1042

1043

1044

(% style="color:blue" %)**AT Command: AT+CHE**

1045

1046

(% border="1" style="background-color:#ffffcc; color:green; width:710.222px" %)

1047

|=(% colspan="3" style="width: 707px;" %)AT+CHE

1048

|(% style="width:160px" %)**Command Example**|(% style="width:198px" %)**Function**|(% style="width:349px" %)**Response**

1049

|(% style="width:160px" %)AT+CHE=?|(% style="width:198px" %)Get eight channels mode|(% style="width:349px" %)1(((

1050

902.3 902.5 902.7 902.9 903.1 903.3 903.5 903.7

OK

)))

|(% style="width:160px" %)AT+CHE=1|(% style="width:198px" %)Set eight channels mode|(% style="width:349px" %)OK

1055

1056

(% style="color:blue" %)**Downlink Command: 0x24 (LHT65,LHT65N Downlink Command:0x07)**

1057

1058

Format: Command Code (0x24) followed by 1 bytes channel value.

1059

1060

If the downlink payload=2401, it means set channel mode to 1, while type code is 24.

1061

1062

* **Example 1**: Downlink Payload: 2401 ~/~/ set channel mode to 1

1063

* **Example 2**: Downlink Payload: 2405 ~/~/ set channel mode to 5

1064

1065

1066

== 7.20 Get or Set RXwindows1 timeout ==

1067

1068

1069

Feature: Get or Set the number of symbols to detect and timeout from RXwindow1(0 to 255).

1070

1071

1072

(% style="color:blue" %)**AT Command: AT+RX1WTO**

1073

1074

(% border="1" style="background-color:#ffffcc; color:green; width:460.222px" %)

1075

|=(% colspan="3" style="width: 457px;" %)AT+ RX1WTO

1076

|(% style="width:163px" %)**Command Example**|(% style="width:201px" %)**Function**|(% style="width:93px" %)**Response**

1077

|(% style="width:163px" %)AT+RX1WTO=?|(% style="width:201px" %)Get RXwindows1 timeout|(% style="width:93px" %)14(((

1078

OK

1079

)))

1080

|(% style="width:163px" %)AT+RX1WTO=60|(% style="width:201px" %)Set RXwindows1 timeout|(% style="width:93px" %)OK

(((

(% style="color:blue" %)**AT+RX1WTO**(%%) is theRxSingle timeout value of receive window 1. If it is not set, then the queriedvalue is the default value. If it is set, then the queried value is the setvalue. AT+RX2TWO is thesame as above. The definitionof RxSingle timeout is as described in the following paragraph.

)))

[[image:image-20220526162535-1.png]]

(((

Increasing thisvalue is equal to extending the time that the receiving window is opened, butthe corresponding power consumption will also increase. Properly increasingthis value can increase the success rate of the downlink.

)))

== 7.21 Get or Set RXwindows2 timeout ==

1101

1102

1103

Feature: Get or Set the number of symbols to detect and timeout from RXwindow2(0 to 255).

1104

1105

1106

(% style="color:blue" %)**AT Command: AT+RX2WTO**

1107

1108

(% border="1" style="background-color:#ffffcc; color:green; width:497.222px" %)

1109

|=(% colspan="3" style="width: 494px;" %)AT+ RX2WTO

1110

|(% style="width:190px" %)**Command Example**|(% style="width:199px" %)**Function**|(% style="width:104px" %)**Response**

1111

|(% style="width:190px" %)AT+RX2WTO=?|(% style="width:199px" %)Get RXwindows2 timeout|(% style="width:104px" %)7(((

1112

OK

1113

)))

1114

|(% style="width:190px" %)AT+RX2WTO=20|(% style="width:199px" %)Set RXwindows2 timeout|(% style="width:104px" %)OK

1115

1116

1117

== 7.22 Setting up uplinkdwelltime (as923, au915) ==

1118

1119

1120

Feature: Get or Set uplinkdwelltime

1121

1122

1123

(% style="color:blue" %)**AT Command: AT+DWELLT**

1124

1125

(% border="1" style="background-color:#ffffcc; color:green; width:497.222px" %)

1126

|=(% colspan="3" style="width: 494px;" %)AT+DWELLT

1127

|(% style="width:183px" %)**Command Example**|(% style="width:179px" %)**Function**|(% style="width:131px" %)**Response**

1128

|(% style="width:183px" %)AT+DWELLT=?|(% style="width:179px" %)Get uplinkdwelltime|(% style="width:131px" %)1(((

1129

OK

1130

)))

1131

|(% style="width:183px" %)AT+DWELLT=0|(% style="width:179px" %)Set uplinkdwelltime|(% style="width:131px" %)OK

1132

1133

(% style="color:blue" %)**Downlink Command: 0x25**

1134

1135

Format: Command Code (0x25) followed by 1 bytes state value.

1136

1137

If the downlink payload=2501, it means set uplinkdwelltime to 1, while type code is 25.

1138

1139

* **Example 1**: Downlink Payload: **2501** ~/~/ set uplinkdwelltime to 1

1140

* **Example 2**: Downlink Payload: **2500** ~/~/ set uplinkdwelltime to 0

1141

1142

1143

== 7.23 Set Packet Receiving Response Level ==

1144

1145

1146

Feature: Get or Set packet receiving response level. This feature is used to set compatible with different LoRaWAN servers. If RPL doesn;t match , user will see strange message in the server portal.

**RPL value:**

* **AT+RPL=0:** Device won't immediately reply any downlink commands from platform.

1152

* **AT+RPL=1:** Device will immediately reply message to Unconfirmed Data Down. Payload is 0x00.

1153

* **AT+RPL=2:** Device will immediately reply message to Confirmed Data Down. Payload is 0x00 and requied response header for this command.

1154

* **AT+RPL=3:** Device will immediately reply message to MAC Command. Payload is 0x00 and requied response header for this command.

1155

* **AT+RPL=4: **Device will immediately reply message to Confirmed Data Down & MAC Command. Payload is 0x00 and requied response header for these two commands.

**Case Analyes:**

* For Class A devices, AT+RPL=0 is ok. that is defaut settings in software.

1160

* For Class C devices used in ChirpStack, need to set AT+RPL=4 because Chirpstack require immedietely reply message to MAC Command.

1161

* For Class C devices used in TTI, need to set AT+RPL=4 because TTI require immediately reply message to Confirmed Data Down & MAC Command.

1162

1163

(% style="color:blue" %)**AT Command: AT+RPL**

1164

1165

(% border="1" style="background-color:#ffffcc; color:green; width:536.222px" %)

1166

|=(% colspan="3" style="width: 533px;" %)AT+RPL

1167

|(% style="width:160px" %)**Command Example**|(% style="width:263px" %)**Function**|(% style="width:109px" %)**Response**

1168

|(% style="width:160px" %)AT+RPL=?|(% style="width:263px" %)Get packet receiving response level|(% style="width:109px" %)1(((

1169

OK

1170

)))

1171

|(% style="width:160px" %)AT+RPL=0|(% style="width:263px" %)Set packet receiving response level|(% style="width:109px" %)OK

1172

1173

(% style="color:blue" %)**Downlink Command: 0x21**

1174

1175

Format: Command Code (0x21) followed by 1 bytes level value.

1176

1177

If the downlink payload=2101, it means set packet receiving response level to 1, while type code is 21.

1178

1179

* **Example 1**: Downlink Payload: **2101** ~/~/ set packet receiving response level to 1

1180

* **Example 2**: Downlink Payload: **2102** ~/~/ set packet receiving response level to 2

1181

1182

1183

== 7.24 Controls NBTrans in unconfirmed uplink mode（LWS007 NBTrans:Set retransmission packets) ==

1184

1185

1186

(% style="color:blue" %)**AT Command: AT+SETMAXNBTRANS **

1187

1188

(% border="1" style="background-color:#ffffcc; color:green; width:589px" %)

1189

|=(% colspan="3" style="width: 586px;" %)AT+**SETMAXNBTRANS**

1190

|(% style="width:227px" %)**Command Example**|(% style="width:300px" %)**Function**|(% style="width:87px" %)**Response**

1191

|(% style="width:227px" %)**AT+SETMAXNBTRANS=1，0**|(% style="width:300px" %)Value1: set the maximum NBTrans.|(% style="width:87px" %)1(((

1192

OK

1193

)))

1194

|(% style="width:227px" %)**AT+SETMAXNBTRANS=？，1**|(% style="width:300px" %)(((

1195

value2: 0: uplink fcnt doesn't change for each NBTrans;

1196

1197

1: uplink fcnt increase by 1 for each NBTrans.

1198

)))|(% style="width:87px" %)(((

1

OK

)))

(% style="color:blue" %)**Downlink Command: 0x33**

1205

1206

Format: Command Code (0x33) followed by 2 bytes mode value.

1207

1208

If the downlink payload=330100, it means set end node to use confirm mode, while type code is 33.

1209

1210

* Example 1: Downlink Payload: 330100 ~/~/ Set AT+SETMAXNBTRANS=1,0

1211

* Example 2: Downlink Payload: 330201 ~/~/ Set AT+SETMAXNBTRANS=2,1

1212

1213

1214

== 7.25 Device offline rejoining （LWS007) ==

1215

1216

1217

(% style="color:blue" %)**AT Command: AT+DDETECT**

1218

1219

AT+DDETECT=<Flag>,<ACK_Timout_1>,<ACK_Timout_2> (Default Value: AT+DDETECT=1,1440,2880)

1220

1221

* ACK_Timout_1: Unit: min

1222

* ACK_Timout_2: Unit: min

1223

1224

(% border="1" style="background-color:#ffffcc; color:green; width:710.222px" %)

1225

|=(% colspan="3" style="width: 707px;" %)AT+**DDETECT**

1226

|(% style="width:160px" %)**Command Example**|(% style="width:198px" %)**Function**|(% style="width:349px" %)**Response**

1227

|(% style="width:160px" %)(((

1228

AT+DDETECT=1,1440,2880

1229

1230

value1

1231

)))|(% style="width:198px" %)Enable online detect|(% style="width:349px" %)(((

1

OK

)))

|(% style="width:160px" %)(((

AT+DDETECT=1,?,2880

value2

)))|(% style="width:198px" %)Online detection packet sending time|(% style="width:349px" %)(((

OK

)))

|(% style="width:160px" %)(((

AT+DDETECT=1,1440,？

value3

)))|(% style="width:198px" %)Process rejoin|(% style="width:349px" %)(((

OK

)))

(% style="color:blue" %)**Downlink Command: 0x32**

1256

1257

Format: Command Code (0x32) followed by 2 bytes mode value.

1258

1259

If the downlink payload=320105A00B40, it means set end node to use confirm mode, while type code is 32.

1260

1261

* **Example 1:** Downlink Payload: 320105A00B40 ~/~/ Set AT+DDETECT=1,1440,2880

1262

** 0x01 : Flag

1263

** 0x05A0: ACK_Timout_1 : 1440minutes (24 hours)

1264

** 0x0B40: ACK_Timout_2 : 2880minutes (48 hours)

1265

** **Explain**: Enable Online Detect, if end node doesn't receive any downlink within ACK_Timout_1( 1440 minutes or 24 hours). End node will use confirmed uplink to send packets during ACK_Timout_1 (the 24th hour) to ACK_Timout_2 ( the 48th hour). If from the 24th to 48th hour, end node got an downlink from server, it will switch back to unconfirmed uplink. end node will restart ACK_Timout_1. If from the 24th to 48th hour, end node still not got any downlink, means device doesn't get ACK from server within last 48 hours. Device will process rejoin, rejoin request interval is AT+RJTDC period. For AU915/ US915, device will use the sub-band used for last join.

1266

1267

1268

== 7.26 Request the server to send an ACK ==

1269

1270

1271

(% style="color:blue" %)**AT Command: AT+PNACKMD**

1272

1273

(% border="1" style="background-color:#ffffcc; color:green; width:536.222px" %)

1274

|=(% colspan="3" style="width: 533px;" %)**AT+PNACKMD**

1275

|(% style="width:160px" %)**Command Example**|(% style="width:263px" %)**Function**|(% style="width:109px" %)**Response**

1276

|(% style="width:160px" %)**AT+PNACKMD=1**|(% style="width:263px" %)If the node uploads the ACK as confirm, it will request the server to send an ACK. If the server ack is not received, the node will upload the packets that have not received the ACK the next time it receives the ACK|(% style="width:109px" %)1(((

1277

OK

1278

)))

1279

|(% style="width:160px" %)**AT+PNACKMD=0**|(% style="width:263px" %)off request the server to send an ACK|(% style="width:109px" %)(((

0

OK