Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 99.1 >
edited by Edwin Chen
on 2022/10/06 17:06
To version < 101.4 >
edited by Xiaoling
on 2022/10/25 15:24
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Edwin
1 +XWiki.Xiaoling
Content
... ... @@ -21,8 +21,10 @@
21 21  (((
22 22  
23 23  
24 +(((
24 24  The Dragino (% style="color:blue" %)**LT series I/O Modules**(%%) are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as:** (% style="color:blue" %)analog current Input, analog voltage input(%%)**(% style="color:blue" %), **relay output**, **digital input**(%%) and (% style="color:blue" %)**digital output**(%%) etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
25 25  )))
27 +)))
26 26  
27 27  (((
28 28  The LT I/O Controllers allows the user to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
... ... @@ -217,7 +217,9 @@
217 217  = 2. Power ON Device =
218 218  
219 219  
222 +(((
220 220  The LT controller can be powered by 7 ~~ 24V DC power source. Connect VIN to Power Input V+ and GND to power input V- to power the LT controller.
224 +)))
221 221  
222 222  (((
223 223  PWR will on when device is properly powered.
... ... @@ -276,12 +276,12 @@
276 276  
277 277  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
278 278  
279 -Add APP EUI in the application.
283 +**Add APP EUI in the application.**
280 280  
281 281  [[image:1653297955910-247.png||height="321" width="716"]]
282 282  
283 283  
284 -Add APP KEY and DEV EUI
288 +**Add APP KEY and DEV EUI**
285 285  
286 286  [[image:1653298023685-319.png]]
287 287  
... ... @@ -289,6 +289,8 @@
289 289  
290 290  (((
291 291  (% style="color:blue" %)**Step 2**(%%): Power on LT and it will auto join to the TTN network. After join success, it will start to upload message to TTN and user can see in the panel.
296 +
297 +
292 292  )))
293 293  
294 294  [[image:1653298044601-602.png||height="405" width="709"]]
... ... @@ -312,7 +312,9 @@
312 312  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
313 313  
314 314  
321 +(((
315 315  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
323 +)))
316 316  
317 317  [[image:image-20220523174024-3.png]]
318 318  
... ... @@ -328,7 +328,6 @@
328 328  * DI is for digital input. DIx=1: high or float, DIx=0: low.
329 329  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
330 330  
331 -
332 332  (% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
333 333  
334 334  For example if payload is: [[image:image-20220523175847-2.png]]
... ... @@ -349,7 +349,6 @@
349 349  * [1] RO1 relay channel is close and the RO1 LED is ON.
350 350  * [0] RO2 relay channel is open and RO2 LED is OFF;
351 351  
352 -
353 353  **LT22222-L:**
354 354  
355 355  * [1] DI2 channel is high input and DI2 LED is ON;
... ... @@ -367,11 +367,12 @@
367 367  
368 368  
369 369  
370 -
371 371  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
372 372  
373 373  
379 +(((
374 374  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
381 +)))
375 375  
376 376  (((
377 377  Total : 11 bytes payload
... ... @@ -403,11 +403,15 @@
403 403  (% class="box infomessage" %)
404 404  (((
405 405  (((
413 +(((
406 406  **AT+MOD=2**
415 +)))
407 407  
417 +(((
408 408  **ATZ**
409 409  )))
410 410  )))
421 +)))
411 411  
412 412  (((
413 413  
... ... @@ -467,11 +467,15 @@
467 467  (% class="box infomessage" %)
468 468  (((
469 469  (((
481 +(((
470 470  **AT+MOD=3**
483 +)))
471 471  
485 +(((
472 472  **ATZ**
473 473  )))
474 474  )))
489 +)))
475 475  
476 476  (((
477 477  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
... ... @@ -482,9 +482,13 @@
482 482  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
483 483  
484 484  
500 +(((
485 485  **LT22222-L**: This mode the DI1 is used as a counting pin.
502 +)))
486 486  
504 +(((
487 487  The AVI1 is also used for counting. AVI1 is used to monitor the voltage. It will check the voltage **every 60s**, if voltage is higher or lower than VOLMAX mV, the AVI1 Counting increase 1, so AVI1 counting can be used to measure a machine working hour.
506 +)))
488 488  
489 489  [[image:image-20220523181903-8.png]]
490 490  
... ... @@ -512,14 +512,17 @@
512 512  (% class="box infomessage" %)
513 513  (((
514 514  (((
534 +(((
515 515  **AT+MOD=4**
536 +)))
516 516  
538 +(((
517 517  **ATZ**
518 518  )))
519 519  )))
542 +)))
520 520  
521 521  
522 -
523 523  (((
524 524  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
525 525  )))
... ... @@ -573,11 +573,15 @@
573 573  (% class="box infomessage" %)
574 574  (((
575 575  (((
598 +(((
576 576  **AT+MOD=5**
600 +)))
577 577  
602 +(((
578 578  **ATZ**
579 579  )))
580 580  )))
606 +)))
581 581  
582 582  (((
583 583  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
... ... @@ -595,14 +595,11 @@
595 595  * **AT+MOD=1 ** **~-~->**  The normal working mode
596 596  * **AT+ADDMOD6=1**   **~-~->**  Enable trigger
597 597  
598 -
599 599  LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
600 600  
601 601  1. Periodically uplink (Base on TDC time). Payload is same as the normal MOD (MOD 1 for above command). This uplink uses LoRaWAN (% style="color:#4f81bd" %)**unconfirmed**(%%) data type
602 602  1. Trigger uplink when meet the trigger condition. LT will sent two packets in this case, the first uplink use payload specify in this mod (mod=6), the second packets use the normal mod payload(MOD=1 for above settings). Both Uplinks use LoRaWAN (% style="color:#4f81bd" %)**CONFIRMED data type.**
603 603  
604 -
605 -
606 606  (% style="color:#037691" %)**AT Command to set Trigger Condition**:
607 607  
608 608  
... ... @@ -686,7 +686,6 @@
686 686  
687 687  * Each bits shows if the corresponding trigger has been configured.
688 688  
689 -
690 690  **Example:**
691 691  
692 692  10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
... ... @@ -699,7 +699,6 @@
699 699  
700 700  * Each bits shows which status has been trigger on this uplink.
701 701  
702 -
703 703  **Example:**
704 704  
705 705  10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
... ... @@ -712,7 +712,6 @@
712 712  
713 713  * Each bits shows which status has been trigger on this uplink.
714 714  
715 -
716 716  **Example:**
717 717  
718 718  00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
... ... @@ -731,13 +731,12 @@
731 731  
732 732  
733 733  
734 -
735 735  === 3.3.7 Payload Decoder ===
736 736  
737 737  (((
738 738  
739 739  
740 -**Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/www.dropbox.com/sh/wtrzu7avdtkmn3z/AACK5NwOMkU9jnvf1uCMuqrVa?dl=0>>https://www.dropbox.com/sh/wtrzu7avdtkmn3z/AACK5NwOMkU9jnvf1uCMuqrVa?dl=0]]
759 +**Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
741 741  )))
742 742  
743 743  
... ... @@ -745,11 +745,15 @@
745 745  == 3.4 ​Configure LT via AT or Downlink ==
746 746  
747 747  
767 +(((
748 748  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
769 +)))
749 749  
750 750  (((
772 +(((
751 751  There are two kinds of Commands:
752 752  )))
775 +)))
753 753  
754 754  * (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
755 755  
... ... @@ -757,10 +757,13 @@
757 757  
758 758  
759 759  
783 +
760 760  === 3.4.1 Common Commands ===
761 761  
762 762  
787 +(((
763 763  They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
789 +)))
764 764  
765 765  
766 766  
... ... @@ -906,8 +906,6 @@
906 906  * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
907 907  * **0x09 01 aa bb cc    ** ~/~/ same as AT+TRIG1=aa,0x(bb cc)
908 908  
909 -
910 -
911 911  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
912 912  
913 913  
... ... @@ -1147,7 +1147,7 @@
1147 1147  
1148 1148  (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1149 1149  
1150 -[[image:image-20220714135731-1.png||height="406" width="627"]]
1174 +[[image:image-20221008095908-1.png||height="364" width="564"]]
1151 1151  
1152 1152  
1153 1153  (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
... ... @@ -1333,10 +1333,13 @@
1333 1333  
1334 1334  Example：**aa xx xx xx xx**         ~/~/ aa indicates whether the configuration has changed, 00 is yes, 01 is no; xx xx xx xx are the bytes sent.
1335 1335  
1360 +
1336 1336  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173747-6.png?width=1124&height=165&rev=1.1||alt="image-20220823173747-6.png"]]
1337 1337  
1338 1338  For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1339 1339  
1365 +
1366 +
1340 1340  [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]
1341 1341  
1342 1342  For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
... ... @@ -1349,7 +1349,7 @@
1349 1349  * (((
1350 1350  (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1351 1351  
1352 -**26 01  ** ~/~/ Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1379 +**26 01  ** ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1353 1353  
1354 1354  
1355 1355  )))
... ... @@ -1570,13 +1570,13 @@
1570 1570  We take the wind speed sensor as an example for reference only.
1571 1571  
1572 1572  
1573 -**Specifications of the wind speed sensor:**
1600 +(% style="color:blue" %)**Specifications of the wind speed sensor:**
1574 1574  
1575 -Red:  12~~24v
1602 +**Red:  12~~24v**
1576 1576  
1577 -Yellow:  4~~20mA
1604 +**Yellow:  4~~20mA**
1578 1578  
1579 -Black:  GND
1606 +**Black:  GND**
1580 1580  
1581 1581  
1582 1582  **Connection diagram:**
... ... @@ -1614,8 +1614,14 @@
1614 1614  == 4.1 Access AT Command ==
1615 1615  
1616 1616  
1644 +(((
1617 1617  LT supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LT for using AT command, as below.
1646 +)))
1618 1618  
1648 +(((
1649 +
1650 +)))
1651 +
1619 1619  [[image:1653358238933-385.png]]
1620 1620  
1621 1621  
... ... @@ -1643,7 +1643,7 @@
1643 1643  )))
1644 1644  
1645 1645  (((
1646 -AT+<CMD>=?       : Get the value
1679 +AT+<CMD>=?       :  Get the value
1647 1647  )))
1648 1648  
1649 1649  (((
... ... @@ -1671,11 +1671,11 @@
1671 1671  )))
1672 1672  
1673 1673  (((
1674 -AT+APPSKEY: Get or Set the Application Session Key
1707 +AT+APPSKEY:  Get or Set the Application Session Key
1675 1675  )))
1676 1676  
1677 1677  (((
1678 -AT+APPEUI: Get or Set the Application EUI
1711 +AT+APPEUI:  Get or Set the Application EUI
1679 1679  )))
1680 1680  
1681 1681  (((
... ... @@ -1687,7 +1687,7 @@
1687 1687  )))
1688 1688  
1689 1689  (((
1690 -AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1723 +AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1691 1691  )))
1692 1692  
1693 1693  (((
... ... @@ -1723,7 +1723,7 @@
1723 1723  )))
1724 1724  
1725 1725  (((
1726 -AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1759 +AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1727 1727  )))
1728 1728  
1729 1729  (((
... ... @@ -1767,7 +1767,7 @@
1767 1767  )))
1768 1768  
1769 1769  (((
1770 -AT+VER: Get current image version and Frequency Band
1803 +AT+VER:  Get current image version and Frequency Band
1771 1771  )))
1772 1772  
1773 1773  (((
... ... @@ -1775,7 +1775,7 @@
1775 1775  )))
1776 1776  
1777 1777  (((
1778 -AT+CFS: Get confirmation status of the last AT+SEND (0-1)
1811 +AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1779 1779  )))
1780 1780  
1781 1781  (((
... ... @@ -1824,40 +1824,42 @@
1824 1824  (((
1825 1825  
1826 1826  
1827 -**If device has not joined network yet:**
1860 +(((
1861 +(% style="color:blue" %)**If device has not joined network yet:**
1828 1828  )))
1863 +)))
1829 1829  
1830 1830  (((
1831 -(% style="background-color:#dcdcdc" %)123456
1866 +(% style="background-color:#dcdcdc" %)**123456**
1832 1832  )))
1833 1833  
1834 1834  (((
1835 -(% style="background-color:#dcdcdc" %)AT+FDR
1870 +(% style="background-color:#dcdcdc" %)**AT+FDR**
1836 1836  )))
1837 1837  
1838 1838  (((
1839 -(% style="background-color:#dcdcdc" %)123456
1874 +(% style="background-color:#dcdcdc" %)**123456**
1840 1840  )))
1841 1841  
1842 1842  (((
1843 -(% style="background-color:#dcdcdc" %)AT+NJM=0
1878 +(% style="background-color:#dcdcdc" %)**AT+NJM=0**
1844 1844  )))
1845 1845  
1846 1846  (((
1847 -(% style="background-color:#dcdcdc" %)ATZ
1882 +(% style="background-color:#dcdcdc" %)**ATZ**
1848 1848  )))
1849 1849  
1850 1850  
1851 1851  (((
1852 -**If device already joined network:**
1887 +(% style="color:blue" %)**If device already joined network:**
1853 1853  )))
1854 1854  
1855 1855  (((
1856 -(% style="background-color:#dcdcdc" %)AT+NJM=0
1891 +(% style="background-color:#dcdcdc" %)**AT+NJM=0**
1857 1857  )))
1858 1858  
1859 1859  (((
1860 -(% style="background-color:#dcdcdc" %)ATZ
1895 +(% style="background-color:#dcdcdc" %)**ATZ**
1861 1861  )))
1862 1862  
1863 1863  
... ... @@ -1867,55 +1867,57 @@
1867 1867  (((
1868 1868  
1869 1869  
1870 -(% style="background-color:#dcdcdc" %)123456(%%)  Enter Password to have AT access.
1905 +(((
1906 +(% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1871 1871  )))
1908 +)))
1872 1872  
1873 1873  (((
1874 -(% style="background-color:#dcdcdc" %) AT+FDR(%%)   Reset Parameters to Factory Default, Keys Reserve
1911 +(% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
1875 1875  )))
1876 1876  
1877 1877  (((
1878 -(% style="background-color:#dcdcdc" %) 123456(%%)  Enter Password to have AT access.
1915 +(% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1879 1879  )))
1880 1880  
1881 1881  (((
1882 -(% style="background-color:#dcdcdc" %) AT+CLASS=C(%%) Set to work in CLASS C
1919 +(% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
1883 1883  )))
1884 1884  
1885 1885  (((
1886 -(% style="background-color:#dcdcdc" %) AT+NJM=0(%%)  Set to ABP mode
1923 +(% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
1887 1887  )))
1888 1888  
1889 1889  (((
1890 -(% style="background-color:#dcdcdc" %) AT+ADR=0(%%)  Set the Adaptive Data Rate Off
1927 +(% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
1891 1891  )))
1892 1892  
1893 1893  (((
1894 -(% style="background-color:#dcdcdc" %) AT+DR=5(%%)  Set Data Rate
1931 +(% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
1895 1895  )))
1896 1896  
1897 1897  (((
1898 -(% style="background-color:#dcdcdc" %) AT+TDC=60000(%%)  Set transmit interval to 60 seconds
1935 +(% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
1899 1899  )))
1900 1900  
1901 1901  (((
1902 -(% style="background-color:#dcdcdc" %) AT+CHS=868400000(%%)  Set transmit frequency to 868.4Mhz
1939 +(% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
1903 1903  )))
1904 1904  
1905 1905  (((
1906 -(% style="background-color:#dcdcdc" %) AT+RX2FQ=868400000(%%)  Set RX2Frequency to 868.4Mhz (according to the result from server)
1943 +(% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
1907 1907  )))
1908 1908  
1909 1909  (((
1910 -(% style="background-color:#dcdcdc" %) AT+RX2DR=5(%%)  Set RX2DR to match the downlink DR from server. see below
1947 +(% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
1911 1911  )))
1912 1912  
1913 1913  (((
1914 -(% style="background-color:#dcdcdc" %) AT+DADDR=26 01 1A F1 (%%) Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1951 +(% style="background-color:#dcdcdc" %)** AT+DADDR=26 01 1A F1** (%%) ~/~/ Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1915 1915  )))
1916 1916  
1917 1917  (((
1918 -(% style="background-color:#dcdcdc" %) ATZ         (%%) Reset MCU
1955 +(% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
1919 1919  
1920 1920  
1921 1921  )))
... ... @@ -1925,11 +1925,15 @@
1925 1925  )))
1926 1926  
1927 1927  (((
1928 -(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1929 -2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1930 -3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1931 -4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1965 +**~1. Make sure the device is set to ABP mode in the IoT Server.**
1932 1932  
1967 +**2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
1968 +
1969 +**3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?
1970 +dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1971 +
1972 +**4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5**
1973 +
1933 1933  
1934 1934  )))
1935 1935  
... ... @@ -1945,12 +1945,15 @@
1945 1945  === 4.2.3 Change to Class A ===
1946 1946  
1947 1947  
1948 -If sensor JOINED
1949 -(% style="background-color:#dcdcdc" %)AT+CLASS=A
1950 -ATZ
1989 +(((
1990 +(% style="color:blue" %)If sensor JOINED:
1951 1951  
1992 +(% style="background-color:#dcdcdc" %)**AT+CLASS=A
1993 +ATZ**
1994 +)))
1952 1952  
1953 1953  
1997 +
1954 1954  = 5. FAQ =
1955 1955  
1956 1956  
... ... @@ -1974,8 +1974,10 @@
1974 1974  (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
1975 1975  
1976 1976  
2021 +(((
1977 1977  (% style="color:blue" %)**For LT-22222-L**(%%):
1978 1978  Hold down the PRO button and then momentarily press the RST reset button and the (% style="color:red" %)**DO1 led**(%%) will change from OFF to ON. When (% style="color:red" %)**DO1 LED**(%%) is on, it means the device is in download mode.
2024 +)))
1979 1979  
1980 1980  
1981 1981  )))
... ... @@ -2056,16 +2056,15 @@
2056 2056  )))
2057 2057  
2058 2058  (((
2059 -(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access.
2060 -(% style="background-color:#dcdcdc" %)AT+FDR(%%)  Reset Parameters to Factory Default, Keys Reserve
2061 -(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access.
2062 -(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%) Set to ABP mode
2063 -(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%) Set the Adaptive Data Rate Off
2064 -(% style="background-color:#dcdcdc" %)AT+DR=5 (%%) Set Data Rate (Set AT+DR=3 for 915 band)
2065 -(% style="background-color:#dcdcdc" %)AT+TDC=60000 (%%) Set transmit interval to 60 seconds
2066 -(% style="background-color:#dcdcdc" %)AT+CHS=868400000(%%)  Set transmit frequency to 868.4Mhz
2067 -(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%)  Set Device Address to 26 01 1A F1
2068 -(% style="background-color:#dcdcdc" %)ATZ        (%%) Reset MCU
2105 +(% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2106 +(% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2107 +(% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2108 +(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2109 +(% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2110 +(% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2111 +(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2112 +(% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2113 +(% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2069 2069  )))
2070 2070  
2071 2071  
... ... @@ -2107,15 +2107,17 @@
2107 2107  After restart, the status before power failure will be read from flash.
2108 2108  
2109 2109  
2155 +
2110 2110  == 5.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2111 2111  
2158 +
2112 2112  LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2113 2113  
2161 +
2114 2114  [[image:image-20221006170630-1.png||height="610" width="945"]]
2115 2115  
2116 2116  
2117 2117  
2118 -
2119 2119  = 6. Trouble Shooting =
2120 2120  
2121 2121  
... ... @@ -2219,4 +2219,3 @@
2219 2219  * LT-22222-L: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]
2220 2220  * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2221 2221  * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2222 -
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