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Last modified by Kilight Cao on 2025/07/03 15:34
From version 53.2
edited by Kilight Cao
on 2025/07/03 15:01
Change comment: There is no comment for this version
To version 54.2
edited by Kilight Cao
on 2025/07/03 15:04
Change comment: There is no comment for this version

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... ... @@ -2525,85 +2525,11 @@
2525 2525  )))
2526 2526  
2527 2527  
2528 -=== 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
2529 -
2530 2530  (((
2531 2531  
2532 -
2533 -(((
2534 -(% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter the password to enable AT commands access
2535 2535  )))
2536 -)))
2537 2537  
2538 -(((
2539 -(% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset parameters to Factory Default, Reserve keys
2540 -)))
2541 2541  
2542 -(((
2543 -(% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter the password to enable AT command access
2544 -)))
2545 -
2546 -(((
2547 -(% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to CLASS C mode
2548 -)))
2549 -
2550 -(((
2551 -(% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
2552 -)))
2553 -
2554 -(((
2555 -(% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
2556 -)))
2557 -
2558 -(((
2559 -(% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
2560 -)))
2561 -
2562 -(((
2563 -(% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
2564 -)))
2565 -
2566 -(((
2567 -(% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4 MHz
2568 -)))
2569 -
2570 -(((
2571 -(% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2 frequency to 868.4 MHz (according to the result from the server)
2572 -)))
2573 -
2574 -(((
2575 -(% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2 DR to match the downlink DR from the server. See below.
2576 -)))
2577 -
2578 -(((
2579 -(% style="background-color:#dcdcdc" %)** AT+DADDR=26 01 1A F1** (%%) ~/~/ Set Device Address. The Device Address can be found in the application on the LoRaWAN NS.
2580 -)))
2581 -
2582 -(((
2583 -(% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
2584 -
2585 -
2586 -)))
2587 -
2588 -(((
2589 -(% style="color:red" %)**Note:**
2590 -)))
2591 -
2592 -(((
2593 -**~1. Ensure that the device is set to ABP mode in the LoRaWAN Network Server.**
2594 -
2595 -**2. Verify that the LG01/02 gateway RX frequency matches the AT+CHS setting exactly.**
2596 -
2597 -**3. Make sure the SF/bandwidth settings in the LG01/LG02 match the settings of AT+DR. Refer to [[this link>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
2598 -
2599 -**4. The commands AT+RX2FQ and AT+RX2DR enable downlink functionality. To set the correct parameters, you can check the actual downlink parameters to be used as shown below. Here, RX2FQ should be set to 868400000 and RX2DR should be set to 5.**
2600 -)))
2601 -
2602 -(((
2603 -
2604 -)))
2605 -
2606 -
2607 2607  === 4.2.3 Change to Class A ===
2608 2608  
2609 2609  
... ... @@ -2778,16 +2778,11 @@
2778 2778  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.
2779 2779  
2780 2780  
2781 -== 6.6 Can I use point-to-point communication with LT-22222-L? ==
2782 -
2783 -
2784 -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]].
2785 -
2786 2786  
2787 2787  )))
2788 2788  
2789 2789  (((
2790 -== 6.7 Why does the relay output default to an open relay after the LT-22222-L is powered off? ==
2711 +== 6.6 Why does the relay output default to an open relay after the LT-22222-LA is powered off? ==
2791 2791  
2792 2792  
2793 2793  * If the device is not properly shut down and is directly powered off.
... ... @@ -2795,23 +2795,19 @@
2795 2795  * In modes 2 to 5, the DO/RO status and pulse count are saved to flash memory.
2796 2796  * After a restart, the status before the power failure will be read from Flash.
2797 2797  
2798 -== 6.8 Can I set up LT-22222-L as an NC (Normally Closed) relay? ==
2719 +== 6.7 Can I set up LT-22222-LA as an NC (Normally Closed) relay? ==
2799 2799  
2800 2800  
2801 -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:
2722 +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:
2802 2802  
2724 +[[image:image-20221006170630-1.png]]
2803 2803  
2804 2804  
2805 2805  
2806 -== 6.9 Can the LT-22222-L save the RO state? ==
2807 2807  
2729 +== 6.9 Why does the LT-22222-LA always report 15.585V when measuring the AVI? ==
2808 2808  
2809 -To enable this feature, the firmware version must be 1.6.0 or higher.
2810 2810  
2811 -
2812 -== 6.10 Why does the LT-22222-L always report 15.585V when measuring the AVI? ==
2813 -
2814 -
2815 2815  It is likely that the GND is not connected during the measurement, or that the wire connected to the GND is loose.
2816 2816  
2817 2817  
image-20221006170630-1.png
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