AT Commands Guide

1.0 Accessing the AT Commands

How you access the AT Commands will differ between devices. See the sections below to find the instructions for your device.

1.1 Board Type 1

This includes the following devices LSN50v2-8, LSN50v2-D2X, LSN50v2-S31X, CPL01, LDSO3A, LWL03A, SW3L Series and the NB-IoT versions of these devices. This will also be correct for the upgraded versions of these devices (e.g. SN50V3-LB/NB, D2X-LB/NB, S31X-LB/NB, CPL03-LB/NB, DS03A-LB/NB, SW3L-LB/NB)

To access the AT Commands to change the configuration of your device you will need:

– A USB-TTL Converter

– 3 F-F DuPont Cables

– A Phillips screwdriver

1. Open up the device by removing the 4 screws on the front of the device.
2. Using the F-F Cables connect one end of the cables to the USB-TTL Converter as shown below:

Then connect the other end of the cables to the corresponding pin receptors on the device as shown below:

Plug the USB-TTL Converter into a USB port on your laptop and open Serial Port Utility. If you have a Windows laptop it should already be installed, if not you can install a copy here.

5. On the left hand side, select the COM Port that you have plugged the USB-TTL converter into and make sure the rest of the fields match that of the image below:

6. Click the play/start button to open the session.

7. To begin communicating with the device may need to enter the device password (123456 or 12345678 as default- Newer models will have a unique AT Pin which can be found on the registration key sticker on the device box). Make sure to press the enter key before you press send as otherwise to command will not work.

8. You can then enter any device specific or common commands to change the device configuration. In this example we will use the AT+TDC=(time in milliseconds) command to adjust the uplink interval.

9. To see the current uplink interval use the AT Command: AT+TDC=?. Make sure to leave a new line after every AT Command entered. The device should then show 1200000 OK if the device is set to a 20min Uplink interval.

10. 10. To change the uplink interval enter: AT+TDC=’the required uplink interval in milliseconds’

 For Example:

• AT+TDC=30000 – To change the uplink interval to 30 seconds
• AT+TDC=60000- To change the uplink interval to 60 seconds

11. The device will reply with ‘OK’. Then hit the reset button on the device to trigger this change. You will see an uplink then come through serial port utility every 30 or 60 seconds depending on which command was used.

1.2 Board Type 2

This includes the following devices LTC2-XX, LDDSXX, LLDSXX, LMDSXXX, LLMS01, LSE01, LSPH01, GroPoint Air, RS485-BL and the NB-IoT versions of these devices. This will also be correct for the upgraded versions of these devices (e.g. DDSXX-LB/NB, LLDSXX-LB/NB, LMDSXXX-LB/NB, LMS01-LB-NB, SE01-LB-NB, SPH01-LB-NB, RS485-LB/NB).

To access the AT Commands to change the configuration of your device you will need:

– A USB-TTL Converter

– 3 M-F DuPont Cables

– A Phillips screwdriver

1. Open up the device by removing the 4 screws on the front of the device.
2. Using the M-F Cables provided connect the female the female end of the cables to the USB-TTL Converter as shown below:

4. Plug the USB-TTL Converter into a USB port on your laptop and open Serial Port Utility. If you have a Windows laptop it should already be installed, if not you can install a copy here.

5. On the left hand side, select the COM Port that you have plugged the USB-TTL converter into and make sure the rest of the fields match that of the image below:

6. Click the play/start button to open the session.

7. To begin communicating with the device may need to enter the device password (123456 or 12345678 as default- Newer models will have a unique AT Pin which can be found on the registration key sticker on the device box). Make sure to press the enter key before you press send as otherwise to command will not work.

8. You can then enter any device specific or common commands to change the device configuration. In this example we will use the AT+TDC=(time in milliseconds) command to adjust the uplink interval.

9. To see the current uplink interval use the AT Command: AT+TDC=?. Make sure to leave a new line after every AT Command entered. The device should then show 1200000 OK if the device is set to a 20min Uplink interval.

10. To change the uplink interval enter: AT+TDC=’the required uplink interval in milliseconds’

 For Example:

• AT+TDC=30000 – To change the uplink interval to 30 seconds
• AT+TDC=60000- To change the uplink interval to 60 seconds

11. The device will reply with ‘OK’. Then hit the reset button on the device to trigger this change. You will see an uplink then come through serial port utility every 30 or 60 seconds depending on which command was used.

1.3 LHT65N/S & LHT52

To access the AT Commands to change the configuration of your device you will need:

– E2 Programming Cable

– USB-TTL Converter

– 3 M-F DuPont Cables

3. Plug the USB C end of the programming cable into your device.

4. Plug the USB-TTL Converter into a USB port on your laptop and open Serial Port Utility. If you have a Windows laptop it should already be installed, if not you can install a copy here.

5. On the left hand side, select the COM Port that you have plugged the USB-TTL converter into and make sure the rest of the fields match that of the image below:

6. Click the play/start button to open the session.

7. To begin communicating with the device may need to enter the device password (123456 or 12345678 as default- Newer models will have a unique AT Pin which can be found on the registration key sticker on the device box). Make sure to press the enter key before you press send as otherwise to command will not work.

8. You can then enter any device specific or common commands to change the device configuration. In this example we will use the AT+TDC=(time in milliseconds) command to adjust the uplink interval.

9. To see the current uplink interval use the AT Command: AT+TDC=?. Make sure to leave a new line after every AT Command entered. The device should then show 1200000 OK if the device is set to a 20min Uplink interval.

10. To change the uplink interval enter: AT+TDC=’the required uplink interval in milliseconds’

 For Example:

• AT+TDC=30000 – To change the uplink interval to 30 seconds
• AT+TDC=60000- To change the uplink interval to 60 seconds

11. The device will reply with ‘OK’. Then hit the reset button on the device to trigger this change. You will see an uplink then come through serial port utility every 30 or 60 seconds depending on which command was used.

1.4 LDS02 & LWL02

To access the AT Commands to change the configuration of your device you will need:

– A USB-TTL Converter

– 3 M-F DuPont Cables

– Small flat head screwdriver

1. Open up the device by sliding the back off the device and then using a small screwdriver to remove the board and battery casing from the external casing.
2. Using the M-F Cables provided connect the female the female end of the cables to the USB-TTL Converter as shown below:

4. Plug the USB-TTL Converter into a USB port on your laptop and open Serial Port Utility. If you have a Windows laptop it should already be installed, if not you can install a copy here.

5. On the left hand side, select the COM Port that you have plugged the USB-TTL converter into and make sure the rest of the fields match that of the image below:

6. Click the play/start button to open the session.

7. To begin communicating with the device may need to enter the device password (123456 or 12345678 as default- Newer models will have a unique AT Pin which can be found on the registration key sticker on the device box). Make sure to press the enter key before you press send as otherwise to command will not work.

8. You can then enter any device specific or common commands to change the device configuration. In this example we will use the AT+TDC=(time in milliseconds) command to adjust the uplink interval.

9. To see the current uplink interval use the AT Command: AT+TDC=?. Make sure to leave a new line after every AT Command entered. The device should then show 1200000 OK if the device is set to a 20min Uplink interval.

10. To change the uplink interval enter: AT+TDC=’the required uplink interval in milliseconds’

 For Example:

• AT+TDC=30000 – To change the uplink interval to 30 seconds
• AT+TDC=60000- To change the uplink interval to 60 seconds

11. The device will reply with ‘OK’. Then hit the reset button on the device to trigger this change. You will see an uplink then come through serial port utility every 30 or 60 seconds depending on which command was used.

1.5 LT-22222-L & RS485-LN

To access the AT Commands to change the configuration of your device you will need:

– A USB-TTL Converter

– 3 M-F DuPont Cables

– 3.5mm programming cable (provided with devices)

– A Phillips screwdriver

1. Plug the 3.5mm programming cable into the PROG port on the device.
2. Using the M-F Cables connect one end of the cables to the USB-TTL Converter as shown below:

3. Then connect the other end of the cables to the corresponding pin receptors on the programming cable as shown below:

4. Make sure your device is powered on. Both the LT-22222-L and the RS485-LN can be powered by a 7 ~ 24V DC power source. If the device is properly powered the Power LED will glow red. See below for connection methods:

RS485-LN

• Power Source VIN to RS485-LN VIN+
• Power Source GND to RS485-LN VIN-

LT-22222-L

• Power Source V+ to LT-22222-L VIN
• Power Source V- to LT-22222-L GND

5. Plug the USB-TTL Converter into a USB port on your laptop and open Serial Port Utility. If you have a Windows laptop it should already be installed, if not you can install a copy here.

6. On the left hand side, select the COM Port that you have plugged the USB-TTL converter into and make sure the rest of the fields match that of the image below:

7. Click the play/start button to open the session.

8. To begin communicating with the device may need to enter the device password (123456 or 12345678 as default- Newer models will have a unique AT Pin which can be found on the registration key sticker on the device box). Make sure to press the enter key before you press send as otherwise to command will not work.

9. You can then enter any device specific or common commands to change the device configuration. In this example we will use the AT+TDC=(time in milliseconds) command to adjust the uplink interval.

10. To see the current uplink interval use the AT Command: AT+TDC=?. Make sure to leave a new line after every AT Command entered. The device should then show 1200000 OK if the device is set to a 20min Uplink interval.

11. To change the uplink interval enter: AT+TDC=’the required uplink interval in milliseconds’

 For Example:

• AT+TDC=30000 – To change the uplink interval to 30 seconds
• AT+TDC=60000- To change the uplink interval to 60 seconds

12. The device will reply with ‘OK’. Then hit the reset button on the device to trigger this change. You will see an uplink then come through serial port utility every 30 or 60 seconds depending on which command was used.

2.0 General Commands

These commands re universal across all devices. For device specific commands, please refer to the user manual of your device.

2.1 System Management Commands

2.1.1 Change Uplink Interval

Function: Change device uplink interval

AT Command: AT+TDC

Command Example	Function	Response
AT+TDC=?	Shows the current uplink interval	3000OKSo the interval here is 30000ms (30secs)
AT+TDC=60000	Sets the uplink interval	OKThe interval has been set to 60000ms (60secs)

2.1.2 Reboot End Node

Function: Reboot End Node to perform a new OTAA or ABP join

AT Command: ATZ

Command Example	Function	Response
ATZ	Reset MCU	Device will reset and will show the booting info

2.1.3 Reset to Factory Default

Function: Reset to factory default. The OTAA and ABP Keys will be preserved when running this command.

AT Command: AT+FDR

Command Example	Function	Response
AT+FDR	Reset to factory default	Device will reset to factory default and will show the booting info

2.1.4 Show Firmware Version

Function: Shows the firmware version and frequency plan of the device.

AT Commands: AT+VER

Command Example	Function	Response
AT+VER=?	Shows the firmware version and frequency plan	1.8.0 EU868OK

2.1.5 Show System Configuration

Function: Shows system configuration.

AT Command: AT+CFG

Command Example	Function	Response
AT+CFG	Shows full system configuration.	AT+DEUI = XX XX XX XX XX XX XX XX AT+DADDR=XXXXXXXX ………. AT+RX2WTO=X AT+CHS=868100000 OK

2.2 Keys, ID & EUI Management

2.2.1 Application EUI (APPEUI)

Function: Get or set APPEUI

AT Command: AT+APPEUI

Command Example	Function		Response
AT+APPEUI=?		Shows the APPEUI	00 B3 D5 00 00 00 00 00 OK
AT+APPEUI=00 B3 D5 7E F0 00 4D 34		Sets the APPEUI	OKThe APPEUI has been set to 00 B3 D5 7E F0 00 4D 34

2.2.2 Application Key (APPKEY)

Function: Get or set APPKEY

AT Command: AT+APPKEY

Command Example	Function		Response
AT+APPKEY=?		Shows the APPKEY	00 35 55 55 22 23 55 53 43 24 23 42 34 35 35 35OK
AT+APPKEY= 00 35 55 55 22 23 55 53 43 24 23 42 34 35 35 35		Sets the APPKEY	OKThe APPEUI has been set to 00 35 55 55 22 23 55 53 43 24 23 42 34 35 35 35

2.2.3 Application Session Key (APPSKEY)

Function: Get or set APPSKEY

AT Command: AT+APPSKEY

Command Example	Function		Response
AT+APPSKEY=?		Shows the APPSKEY	00 7D DC 73 33 D3 EB 9E 14 38 D5 A4 3E 62 5B E2OK
AT+APPSKEY= 00 7D DC 73 33 D3 EB 9E 14 38 D5 A4 3E 62 5B E2		Sets the APPSKEY	OKThe APPSKEY has been set to 00 7D DC 73 33 D3 EB 9E 14 38 D5 A4 3E 62 5B E2

2.2.4 Device Address (DEVADDR)

Function: Get or set DEVADDR

AT Command: AT+DADDR

Command Example	Function		Response
AT+DADDR=?		Shows the DEVADDR	A8 40 41 FFOK
AT+DADDR= A8 40 41 FF		Sets the DEVADDR	OKThe DEVADDR has been set to A8 40 41 FF

2.2.5 Device EUI (DEVEUI)

Function: Get or set DEVEUI

AT Command: AT+DEUI

Command Example	Function		Response
AT+DEUI=?		Shows the DEVEUI	00 44 34 22 33 45 55 55 OK
AT+DEUI= A8 40 41 FF FF 12 34 56		Sets the DEVEUI	OKThe DEVEUI has been set to A8 40 41 FF FF 12 34 56

2.2.6 Network ID (NWKID)

Function: Get or set NWKID

AT Command: AT+NWKID

Command Example	Function		Response
AT+NWKID=?		Shows the Network ID	A8 40 41 FFOK
AT+NWKID= A8 40 41 FF		Sets the Network ID	OKThe DEVADDR has been set to A8 40 41 FF

2.2.7 Network Session Key (NWKSKEY)

Function: Get or set NWKSKEY

AT Command: AT+NWKSKEY

Command Example	Function		Response
AT+NWKSKEY=?		Shows the NWKSKEY	00 4F 19 25 52 CE 97 09 D7 FA 84 71 DB 51OK
AT+NWKSKEY= A8 40 41 FF FF 12 34 56 00 01 02 04 05 06 06 07		Sets the NWKSKEY	OKThe NWKSKEY has been set to A8 40 41 FF FF 12 34 56 00 01 02 04 05 06 06 07

2.3 Joining & sending data on a LoRaWAN Network

2.3.1 Confirmation Mode

Function: Get or set the confirmation mode (0-1).

Before DR-LWS-007 software stack.

AT Command: AT+CFM

Command Example	Function	Response
AT+CFM=?	Shows the Confirmation mode	0OK
AT+CFM=1	Sets the Confirmation mode	OKThe CFM has been set to 1
AT+CFM=2	Sets the Confirmation mode	OKThe CFM has been set to 2

After DR-LWS-007 software stack.

AT Command: AT+CFM

Command Example	Function	Response
AT+CFM=1,0,0Value1	Confirmed uplink	1OK
AT+CFM=0,?,0Value2	Sets max retry level, range: 0~-7	0~7OKThe Max retry level has been set to 0~7
AT+CFM=0,0,1Value3	Sets the uplink FCnt to increase by 1 for each try	1OKThe uplink FCnt has been set to increase by 1 for each try

2.3.2 Confirmation Status

Function: Gets the confirmation status of the last AT+SEND (0-1).

AT Command: AT+CFS

Command Example	Function	Response
AT+CFS=?	Gets confirmation status	0OK

2.3.3 Join LoRa Network

Function: Joins the LoRa Network.

AT Command: AT+JOIN

Command Example	Function	Response
AT+JOIN=?	Gets information	AT+JOIN: Join NetworkOK

2.3.4 LoRa Network Join Mode

Function: Gets or sets the LoRa Network Join Mode.

AT Command: AT+NJM

Command Example	Function	Response
AT+NJM=?	Gets network join mode	1OK
AT+NJM=0	Sets the network join mode	OKThe NJM has been set to 0
AT+NJM=2	Sets the network join mode	OKThe NJM has been set to 2

2.3.5 LoRa Network Join Status

Function: Gets the LoRa Network Join Status.

AT Command: AT+NJS

Command Example	Function	Response
AT+NJS=?	Gets the join status	0OK

2.3.6 Print last received data in raw format

Function: Prints the last received data in raw format (<port:data>).

AT Command: AT+RECV

Command Example	Function	Response
AT+RECV=?	Prints the last received data in the raw format	0:OK

2.3.7 Print last received data in binary format

Function: Prints the last received data in binary format (<port:data>).

AT Command: AT+RECVB

Command Example	Function	Response
AT+RECVB=?	Prints the last received data in the binary format	2: 0010OK

2.3.8 Send Text Data

Function: Sends text data (<port:data>).

AT Command: AT+SEND

Command Example	Function	Response
AT+SEND=12:hello world	Sends text data along with the application port	OK

2.3.9 Send Hexadecimal Data

Function: Sends hexadecimal data (<port:data>).

AT Command: AT+SENDB

Command Example	Function	Response
AT+SENDB=12:ABCDEF0123456789	Sends hexadecimal data along with the application port	OK

2.4 LoRaWAN Network Management

2.4.1 Adaptive Data Rate (ADR)

Function: Get or set the ADR setting (0: off, 1: on).

AT Command: AT+ADR

Command Example	Function	Response
AT+ADR=?	Gets the ADR setting	1OK
AT+ADR=0	Sets the ADR setting	OKThe ADR setting has been set to 0: Off
AT+ADR=1	Sets the ADR setting	OKThe ADR setting has been set to 1: On

2.4.2 LoRa Class

Function: Get or set the device class (Dragino products currently only support class A & C).

AT Command: AT+CLASS

Command Example	Function	Response
AT+CLASS=?	Gets the device class	AOK
AT+CLASS=C	Sets the device class	OKThe device class has been set to C

Note: Run AT+FDR Before running AT+CLASS=C

2.4.3 Duty Cycle Setting

Function: Get or set the ETSI Duty Cycle setting (0=disabled, 1=enabled -Only for testing).

AT Command: AT+DCS

Command Example	Function	Response
AT+DCS=?	Gets the ETSI duty cycle setting	1OK
AT+DCS=0	Sets the ETSI duty cycle setting	OKThe ETSI duty cycle setting has been set to 0: Disabled

2.4.4 Data Rate

Function: Get or set the Data Rate (0-7 corresponding to DR_X).

AT Command: AT+DR

Command Example	Function	Response
AT+DR=?	Gets the Data rate	5OK
AT+DR=2	Sets the Data rate	OKThe data rate has been set to 2

Note: Users need to use command AT+ADR=0 to set the ADR to 0 first. Otherwise the device will respond to the servers ADR command and change the DR according to the servers auto-adjustment.

Data Rate specifies the Spreading Factor- The mapping varies in different frequency bands.

See here for more details.

2.4.5 Frame Counter Downlink

Function: Get or set the Frame Counter Downlink.

AT Command: AT+FCD

Command Example	Function	Response
AT+FCD=?	Gets the Frame Counter Downlink.	0OK
AT+FCD=10	Sets the Frame Counter Downlink.	OKThe system will write the new value to FCD.

2.4.6 Frame Counter Uplink

Function: Get or set the Frame Counter Uplink.

AT Command: AT+FCU

Command Example	Function	Response
AT+FCU=?	Gets the Frame Counter Uplink.	0OK
AT+FCU=10	Sets the Frame Counter Uplink.	OKThe system will write the new value to FCU.

2.4.7 Join Accept Delay 1

Function: Get or set the Join Accept delay between the end of the TX and the Join RX Window 1 (RX1) in ms.

AT Command: AT+JN1DL

Command Example	Function	Response
AT+JN1DL=?	Gets the Join Accept delay	5000OK
AT+JN1DL=10000	Sets the Join Accept delay	OKThe join accept delay has been set to 10000ms

2.4.8 Join Accept Delay 2

Function: Get or set the Join Accept delay between the end of the TX and the Join RX Window 2 (RX2) in ms.

AT Command: AT+JN2DL

Command Example	Function	Response
AT+JN2DL=?	Gets the Join Accept delay	6000OK
AT+JN2DL=20000	Sets the Join Accept delay	OKThe join accept delay has been set to 20000ms

2.4.9 Public Network Mode

Function: Get or set the public network mode (0:off, 1:on).

A public LoRaWAN network uses 0x34 as a sync-word. Default settings: PNM=1

AT Command: AT+PNM

Command Example	Function	Response
AT+PNM=?	Gets the public network mode	1OK
AT+PNM=1	Sets to use public network mode.Sets syncword=0x34	OKSystem will write new value to PNM
AT+PNM=0	Sets to use private network mode.Sets syncword=0x12	OK

Note: If you are building your own LoRaWAN Server but still use syncword=0x34, this is still considered a public network.

2.4.10 Receive Delay 1

Function: Get or set the delay between the end of TX and the RX1 Window in ms.

AT Command: AT+RX1DL

Command Example	Function	Response
AT+RX1DL=?	Gets the receive delay	1000OK
AT+RXDL1=1500	Sets the receive delay	OKThe receive accept delay has been set to 1500ms

2.4.11 Receive Delay 2

Function: Get or set the delay between the end of TX and the RX2 Window in ms.

AT Command: AT+RX2DL

Command Example	Function	Response
AT+RX2DL=?	Gets the receive delay	2000OK
AT+RXDL2=2500	Sets the receive delay	OKThe receive accept delay has been set to 2500ms

2.4.12 RX2 Window Data Rate

Function: Get or set the RX2 window data rate (0-7 corresponding to DR_X).

AT Command: AT+RX2DR

Command Example	Function	Response
AT+RX2DR=?	Gets the RX2 window data rate	2OK
AT+RXDR=6	Sets the RX2 window data rate	OKThe RX2 window data rate has been set to 6

2.4.13 RX2 Window Frequency

Function: Get or set the RX2 window frequency.

AT Command: AT+RX2FQ

Command Example	Function	Response
AT+RX2FQ=?	Gets the RX2 window frequency	2OK
AT+RX2FQ=434665000	Sets the RX2 window data frequency	OKThe RX2 window frequency has been set to 434665000

2.4.14 Transmission Power

Function: Get or set the transmission power (0-5, MAX:0, MIN:5- According to LoRaWAN Spec or 40=10dB, 41=11dB…50=20dB which is out of LoRaWAN Spec).

AT Command: AT+TXP

Command Example	Function	Response
AT+TXP=?	Gets the Transmission power	0OK
AT+TXP=1	Sets the Transmission power	OKThe Transmission power has been set to 1

Note: Transmission power might be changed by the ADR from the LoRaWAN server. So when manually changing the TXP also remember to use AT+ADR=0.

2.4.15 RSSI of the Last Received Packet

Function: Get the RSSI of the last received packet.

AT Command: AT+RSSI

Command Example	Function	Response
AT+RSSI=?	Gets the RSSI of the last received packet	0OK

2.4.16 SNR of the Last Received Packet

Function: Get the SNR of the last received packet.

AT Command: AT+SNR

Command Example	Function	Response
AT+SNR=?	Gets the SNR of the last received packet	0OK

2.4.17 Application Port

Function: Get or set the Application Port.

AT Command: AT+PORT

Command Example	Function	Response
AT+PORT=?	Gets the Application Port	21OK
AT+PORT=21	Gets the Application Port	OKThe Application port has been set to 21

2.4.18 Single Channel Mode

Function: Get or set the Frequency (Unit:Hz) for Single Channel Mode.

AT Command: AT+CHS

Command Example	Function	Response
AT+CHS=?	Gets the Single Channel Mode	0OK
AT+CHS=868100000	Gets the Single Channel Mode	OKThe single channel mode has been set to 868100000

2.4.19 Eight Channel Mode

Function: Get or set Eight Channel Mode. Only for bands: US915, AU915 & CN470.

AT Command: AT+CHE

Command Example	Function	Response
AT+CHE=?	Gets the Eight Channel Mode	1902.3 902.5 902.7 902.9 903.1 903.3 903.5 903.7OK
AT+CHE=1	Gets the Eight Channel Mode	OKThe eight channel mode has been set to 1

2.4.20 RX1 Window Timeout

Function: Get or set the number of symbols to detect and timeout from the RX1 Window (0-255).

AT Command: AT+RX1WTO

Command Example	Function	Response
AT+RX1WTO=?	Gets the RX1 Window Timeout	14OK
AT+RX1WTO=60	Gets the RX1 Window Timeout	OKThe RX1 window timeout has been set to 60

2.4.21 RX2 Window Timeout

Function: Get or set the number of symbols to detect and timeout from the RX2 Window (0-255).

AT Command: AT+RX2WTO

Command Example	Function	Response
AT+RX2WTO=?	Gets the RX1 Window Timeout	7OK
AT+RX2WTO=20	Gets the RX1 Window Timeout	OKThe RX2 window timeout has been set to 20

2.4.22 Uplink Dwell Time

Function: Get or set the uplink dwell time. Only for AS923 & AU915.

AT Command: AT+DWELLT

Command Example	Function	Response
AT+DWELLT=?	Gets the Uplink Dwell Time	1OK
AT+DWELLT=0	Gets the Uplink Dwell Time	OKThe uplink dwell time has been set to 0

2.4.23 Packet Receiving Response Level

Function: Get or set the packet receiving response level. This feature is used to set compatible  with different LoRaWAN servers. If the RPL doesn’t match, the user will see strange messages in the server portal.

RPL Value:

• -AT+RPL=0: The device won’t immediately reply to any downlink commands from the platform
• AT+RPL=1: The device will immediately reply to unconfirmed data downlinks. Payload is 0x00
• AT+RPL=2: The device will immediately reply to confirmed data downlinks. Payload is 0x00 and the required response header for this command.
• AT+RPL=3: The device will immediately reply to MAC commands. Payload is 0x00 and the required response header for this command.
• AT+RPL=4: The device will immediately reply to confirmed data downlinks & MAC commands. Payload is 0x00 and the required response header for these 2 commands.

Case Analysis:

• For Class A devices, AT+RPL=0 is ok. This is the default setting.
• For Class C devices using ChirpStack, AT+RPL=4 will need to be used as ChirpStack requires immediate replies to MAC commands.
• For Class C devices using TTI, AT+RPL=4 will need to be used as TTI requires immediate replies to MAC commands & confirmed data downlink.

AT Command: AT+RPL

Command Example	Function	Response
AT+RPL=?	Gets the packet receiving response level	1OK
AT+RPL=0	Gets the packet receiving response level	OKThe packet receiving response level has been set to 0

2.4.24 Control NBTrans in Unconfirmed Uplink Mode

Function: LWS007 NBTrans: set retransmission packets.

AT Command: AT+SETMAXNBTRANS

Command Example	Function	Response
AT+SETMAXNBTRANS=1,0	Value 1: Sets the maximum NBTrans.	1OK
AT+SETMAXNBTRANS=?,1	Value 2: 0: Uplink FCnt doesn’t change for each NBTrans1: uplink FCnt increases by 1 for each NBTrans	1OK

2.4.25 Device Offline Rejoining (LWS007)

AT+DDETECT= <Flag>, <ACK_Timeout_1>, <ACK_Timeout_2> (Default Value: AT+DDETECT=1,1440,2880)

• ACK_Timeout_1: Unit: min
• ACK_Timeout_2: Unit: min

AT Command: AT+DDETECT

Command Example	Function	Response
AT+DDETECT= 1,1440,2880Value1	Enable online detection	1OK
AT+DDETECT=1,?,2280Value2	Online detection packet sending time	OK
AT+DDETECT= 1,1440,?Value3	Processes re-join	OK

2.4.26 Request the Server to send an ACK

AT Command: AT+PNACKMD

Command Example	Function	Response
AT+PNACKMD=1	If the node uploads the ACK as confirmed, 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.	1OK
AT+PNACKMD=0	Off request the server to send an ACK	0OK

2.4.27 Request the Server to send an ACK

AT Command: AT+RJTDC

Command Example	Function	Response
AT+RJTDC=?	Shows the re-join data transmission interval in mins	30OK
AT+RJTDC=60	Sets the re-join data transmission interval in mins	OKThe re-join data transmission has been set to 60 mins