Questions in the process of using the RAK4270 module

LPWAN Modules / EVBs RAK4270
1

Issue:
When changing between P2P mode and WAN mode
Setup:

Server:

Details:
when change mode, RAK4270 module stops. There is no response no matter what command is sent.
Is there any special procedure required when changing 2 modes?

2

When you switch between P2P and LoRaWAN, the module will reset and there is no OK response before the reset.
You can send a at+get_config=lora:status and parse the returned values to see whether the change was successful.

3

First of all thank you for your reply.

Yes, as mentioned, before changing the mode, I received a response, but after changing the mode, I did not receive a response.
maybe Do I have to wait for the module after reset?

4

No, there is basically no delay between sending the command and reboot.
See my attached log (It is RAK4200, but the firmware is the same as for RAK4270)

2023-02-27 16:04:22 --> LoRa (R) is a registered trademark or service mark of Semtech Corporation or its affiliates. LoRaWAN (R) is a licensed mark.
2023-02-27 16:04:22 --> 
2023-02-27 16:04:22 --> RAK4200 version:3.2.0.14
2023-02-27 16:04:22 --> UART1 work mode: RUI_UART_NORMAL, 115200, N81
2023-02-27 16:04:22 --> UART2 work mode: RUI_UART_NORMAL, 115200, N81
2023-02-27 16:04:22 --> Current work_mode:LoRaWAN, join_mode:OTAA, MulticastEnable: false, Class: A
2023-02-27 16:04:22 --> Initialization OK
2023-02-27 16:04:22 --> 
2023-02-27 16:04:39 --> at+set_config=lora:work_mode:1
2023-02-27 16:04:39 --> LoRa (R) is a registered trademark or service mark of Semtech Corporation or its affiliates. LoRaWAN (R) is a licensed mark.
2023-02-27 16:04:39 --> 
2023-02-27 16:04:39 --> RAK4200 version:3.2.0.14
2023-02-27 16:04:39 --> UART1 work mode: RUI_UART_NORMAL, 115200, N81
2023-02-27 16:04:39 --> UART2 work mode: RUI_UART_NORMAL, 115200, N81
2023-02-27 16:04:39 --> Current work_mode:P2P
2023-02-27 16:04:39 --> LoRa P2P Transfer_mode: Sender
2023-02-27 16:04:39 --> Initialization OK
2023-02-27 16:04:39 --> 
2023-02-27 16:04:49 --> at+get_config=lora:status
2023-02-27 16:04:50 --> OK work_mode: LoRa P2P
2023-02-27 16:04:50 --> Frequency:869525000
2023-02-27 16:04:50 --> Spreadfact:12
2023-02-27 16:04:50 --> Bandwidth:0
2023-02-27 16:04:50 --> Codingrate:1
2023-02-27 16:04:50 --> Preamlen:8
2023-02-27 16:04:50 --> Powerdbm:20
2023-02-27 16:04:50 --> Transfer_mode:2
2023-02-27 16:04:55 --> at+set_config=lora:work_mode:0
2023-02-27 16:04:55 --> LoRa (R) is a registered trademark or service mark of Semtech Corporation or its affiliates. LoRaWAN (R) is a licensed mark.
2023-02-27 16:04:55 --> 
2023-02-27 16:04:55 --> RAK4200 version:3.2.0.14
2023-02-27 16:04:55 --> UART1 work mode: RUI_UART_NORMAL, 115200, N81
2023-02-27 16:04:55 --> UART2 work mode: RUI_UART_NORMAL, 115200, N81
2023-02-27 16:04:55 --> Current work_mode:LoRaWAN, join_mode:OTAA, MulticastEnable: false, Class: A
2023-02-27 16:04:55 --> Initialization OK
2023-02-27 16:04:55 -->

As you can see, after sending at+set_config=lora:work_mode:1 the boot message is coming immediately.

Are you controlling the RAK4270 from a host MCU or from a serial terminal on your computer?