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Last modified by Kilight Cao on 2025/07/03 15:34
From version 55.1
edited by Kilight Cao
on 2025/07/03 15:05
Change comment: Uploaded new attachment "1653360498588-932.png", version {1}
To version 54.1
edited by Kilight Cao
on 2025/07/03 15:03
Change comment: Uploaded new attachment "image-20221006170630-1.png", version {1}

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2689 2689  (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant-alternates:normal; font-variant-east-asian:normal; font-variant-ligatures:normal; font-variant-numeric:normal; font-variant-position:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)The following figure shows the screenshot of the command set above, issued using a serial tool:
2690 2690  )))
2691 2691  
2692 -[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/1653360498588-932.png?width=726&height=485&rev=1.1||alt="1653360498588-932.png"]]
2693 2693  
2694 2694  
2695 2695  == 6.4 How to change the uplink interval? ==
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2705 2705  You can run the AT command **AT+DEBUG** to view the counting event in the serial output. If the firmware is too old and doesn’t support AT+DEBUG, update to the latest firmware first.
2706 2706  
2707 2707  
2707 +== 6.6 Can I use point-to-point communication with LT-22222-L? ==
2708 +
2709 +
2710 +Yes, you can. Please refer to the [[Point-to-Point Communication of LT-22222-L>>https://wiki.dragino.com/xwiki/bin/view/Main/%20Point%20to%20Point%20Communication%20of%20LT-22222-L/]] page. The firmware that supports point-to-point communication can be found [[here>>https://github.com/dragino/LT-22222-L/releases]].
2711 +
2708 2708  
2709 2709  )))
2710 2710  
2711 2711  (((
2712 -== 6.6 Why does the relay output default to an open relay after the LT-22222-LA is powered off? ==
2716 +== 6.7 Why does the relay output default to an open relay after the LT-22222-L is powered off? ==
2713 2713  
2714 2714  
2715 2715  * If the device is not properly shut down and is directly powered off.
... ... @@ -2717,19 +2717,23 @@
2717 2717  * In modes 2 to 5, the DO/RO status and pulse count are saved to flash memory.
2718 2718  * After a restart, the status before the power failure will be read from Flash.
2719 2719  
2720 -== 6.7 Can I set up LT-22222-LA as an NC (Normally Closed) relay? ==
2724 +== 6.8 Can I set up LT-22222-L as an NC (Normally Closed) relay? ==
2721 2721  
2722 2722  
2723 -The LT-22222-LA's built-in relay is Normally Open (NO). You can use an external relay to achieve a Normally Closed (NC) configuration. The circuit diagram is shown below:
2727 +The LT-22222-L's built-in relay is Normally Open (NO). You can use an external relay to achieve a Normally Closed (NC) configuration. The circuit diagram is shown below:
2724 2724  
2725 -[[image:image-20221006170630-1.png]]
2726 2726  
2727 2727  
2728 2728  
2732 +== 6.9 Can the LT-22222-L save the RO state? ==
2729 2729  
2730 -== 6.8 Why does the LT-22222-LA always report 15.585V when measuring the AVI? ==
2731 2731  
2735 +To enable this feature, the firmware version must be 1.6.0 or higher.
2732 2732  
2737 +
2738 +== 6.10 Why does the LT-22222-L always report 15.585V when measuring the AVI? ==
2739 +
2740 +
2733 2733  It is likely that the GND is not connected during the measurement, or that the wire connected to the GND is loose.
2734 2734  
2735 2735  
1653360498588-932.png
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