Changes for page LT-22222-LA -- LoRa I/O Controller User Manual
Last modified by Kilight Cao on 2025/07/03 15:34
From version 52.1
edited by Kilight Cao
on 2025/07/03 14:56
on 2025/07/03 14:56
Change comment:
Uploaded new attachment "1653358355238-883.png", version {1}
To version 54.2
edited by Kilight Cao
on 2025/07/03 15:04
on 2025/07/03 15:04
Change comment:
There is no comment for this version
Summary
-
Page properties (1 modified, 0 added, 0 removed)
-
Attachments (0 modified, 2 added, 0 removed)
Details
- Page properties
-
- Content
-
... ... @@ -2409,25 +2409,26 @@ 2409 2409 ((( 2410 2410 You can use a USB-to-TTL adapter/converter along with a 3.5mm Program Cable to connect the LT-22222-LA to a PC, as shown below. 2411 2411 2412 -(% title="Click and drag to resize" %) 2412 +(% title="Click and drag to resize" %)[[image:1751525987713-642.png]] 2413 2413 2414 2414 2415 2415 ))) 2416 2416 2417 2417 ((( 2418 -On the PC, you need to set the (% style="color:#4f81bd" %)**serial tool **(%%)(such as [[PuTTY>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]] or [[SecureCRT>>https://www.vandyke.com/cgi-bin/releases.php?product=securecrt]]) to a baud rate of (% style="color:green" %)**9600**(%%) to access the serial console of LT-22222-L. Access to AT commands is disabled by default, and a password (default: (% style="color:green" %)**123456**)(%%) must be entered to enable AT command access, as shown below: 2418 +On the PC, you need to set the (% style="color:#4f81bd" %)**serial tool **(%%)(such as [[PuTTY>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]] or [[SecureCRT>>https://www.vandyke.com/cgi-bin/releases.php?product=securecrt]]) to a baud rate of (% style="color:green" %)**9600**(%%) to access the serial console of LT-22222-LA. Access to AT commands is disabled by default, and a password (default: (% style="color:green" %)**123456**)(%%) must be entered to enable AT command access, as shown below: 2419 2419 ))) 2420 2420 2421 +[[image:1653358355238-883.png]] 2421 2421 2422 2422 2423 2423 ((( 2424 -== 4.2 LT-22222-L related AT commands == 2425 +== 4.2 LT-22222-LA related AT commands == 2425 2425 2426 2426 2427 2427 ))) 2428 2428 2429 2429 ((( 2430 -The following is the list of all the AT commands related to the LT-22222-L, except for those used for switching between working modes. 2431 +The following is the list of all the AT commands related to the LT-22222-LA, except for those used for switching between working modes. 2431 2431 2432 2432 * **##AT##+<CMD>?** : Help on <CMD> 2433 2433 * **##AT##+<CMD>** : Run <CMD> ... ... @@ -2524,85 +2524,11 @@ 2524 2524 ))) 2525 2525 2526 2526 2527 -=== 4.2.2 Single-channel ABP mode (Use with LG01/LG02) === 2528 - 2529 2529 ((( 2530 2530 2531 - 2532 -((( 2533 -(% style="background-color:#dcdcdc" %)**123456**(%%) ~/~/ Enter the password to enable AT commands access 2534 2534 ))) 2535 -))) 2536 2536 2537 -((( 2538 -(% style="background-color:#dcdcdc" %)** AT+FDR**(%%) ~/~/ Reset parameters to Factory Default, Reserve keys 2539 -))) 2540 2540 2541 -((( 2542 -(% style="background-color:#dcdcdc" %)** 123456**(%%) ~/~/ Enter the password to enable AT command access 2543 -))) 2544 - 2545 -((( 2546 -(% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%) ~/~/ Set to CLASS C mode 2547 -))) 2548 - 2549 -((( 2550 -(% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%) ~/~/ Set to ABP mode 2551 -))) 2552 - 2553 -((( 2554 -(% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%) ~/~/ Set the Adaptive Data Rate Off 2555 -))) 2556 - 2557 -((( 2558 -(% style="background-color:#dcdcdc" %)** AT+DR=5**(%%) ~/~/ Set Data Rate 2559 -))) 2560 - 2561 -((( 2562 -(% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%) ~/~/ Set transmit interval to 60 seconds 2563 -))) 2564 - 2565 -((( 2566 -(% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%) ~/~/ Set transmit frequency to 868.4 MHz 2567 -))) 2568 - 2569 -((( 2570 -(% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%) ~/~/ Set RX2 frequency to 868.4 MHz (according to the result from the server) 2571 -))) 2572 - 2573 -((( 2574 -(% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2 DR to match the downlink DR from the server. See below. 2575 -))) 2576 - 2577 -((( 2578 -(% 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. 2579 -))) 2580 - 2581 -((( 2582 -(% style="background-color:#dcdcdc" %)** ATZ** (%%) ~/~/ Reset MCU 2583 - 2584 - 2585 -))) 2586 - 2587 -((( 2588 -(% style="color:red" %)**Note:** 2589 -))) 2590 - 2591 -((( 2592 -**~1. Ensure that the device is set to ABP mode in the LoRaWAN Network Server.** 2593 - 2594 -**2. Verify that the LG01/02 gateway RX frequency matches the AT+CHS setting exactly.** 2595 - 2596 -**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.** 2597 - 2598 -**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.** 2599 -))) 2600 - 2601 -((( 2602 - 2603 -))) 2604 - 2605 - 2606 2606 === 4.2.3 Change to Class A === 2607 2607 2608 2608 ... ... @@ -2777,16 +2777,11 @@ 2777 2777 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. 2778 2778 2779 2779 2780 -== 6.6 Can I use point-to-point communication with LT-22222-L? == 2781 - 2782 - 2783 -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]]. 2784 - 2785 2785 2786 2786 ))) 2787 2787 2788 2788 ((( 2789 -== 6. 7Why 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? == 2790 2790 2791 2791 2792 2792 * If the device is not properly shut down and is directly powered off. ... ... @@ -2794,23 +2794,19 @@ 2794 2794 * In modes 2 to 5, the DO/RO status and pulse count are saved to flash memory. 2795 2795 * After a restart, the status before the power failure will be read from Flash. 2796 2796 2797 -== 6. 8Can 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? == 2798 2798 2799 2799 2800 -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: 2801 2801 2724 +[[image:image-20221006170630-1.png]] 2802 2802 2803 2803 2804 2804 2805 -== 6.9 Can the LT-22222-L save the RO state? == 2806 2806 2729 +== 6.9 Why does the LT-22222-LA always report 15.585V when measuring the AVI? == 2807 2807 2808 -To enable this feature, the firmware version must be 1.6.0 or higher. 2809 2809 2810 - 2811 -== 6.10 Why does the LT-22222-L always report 15.585V when measuring the AVI? == 2812 - 2813 - 2814 2814 It is likely that the GND is not connected during the measurement, or that the wire connected to the GND is loose. 2815 2815 2816 2816
- 1751525987713-642.png
-
- Author
-
... ... @@ -1,0 +1,1 @@ 1 +XWiki.Kilight - Size
-
... ... @@ -1,0 +1,1 @@ 1 +96.0 KB - Content
- image-20221006170630-1.png
-
- Author
-
... ... @@ -1,0 +1,1 @@ 1 +XWiki.Kilight - Size
-
... ... @@ -1,0 +1,1 @@ 1 +337.1 KB - Content