Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 90.11 >
edited by Xiaoling
on 2022/08/18 13:48
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
Content
... ... @@ -15,13 +15,16 @@
15 15  
16 16  = 1.Introduction =
17 17  
18 +
18 18  == 1.1 What is LT Series I/O Controller ==
19 19  
20 20  (((
21 21  
22 22  
24 +(((
23 23  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.
24 24  )))
27 +)))
25 25  
26 26  (((
27 27  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.
... ... @@ -57,7 +57,7 @@
57 57  (((
58 58  
59 59  
60 -**Hardware System:**
63 +(% style="color:#037691" %)**Hardware System:**
61 61  )))
62 62  
63 63  * (((
... ... @@ -82,7 +82,7 @@
82 82  (((
83 83  
84 84  
85 -**Interface for Model: LT22222-L:**
88 +(% style="color:#037691" %)**Interface for Model: LT22222-L:**
86 86  )))
87 87  
88 88  * (((
... ... @@ -107,7 +107,7 @@
107 107  (((
108 108  
109 109  
110 -**LoRa Spec:**
113 +(% style="color:#037691" %)**LoRa Spec:**
111 111  )))
112 112  
113 113  * (((
... ... @@ -177,7 +177,7 @@
177 177  
178 178  * LoRaWAN Class A & Class C protocol
179 179  * Optional Customized LoRa Protocol
180 -* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865
183 +* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
181 181  * AT Commands to change parameters
182 182  * Remote configure parameters via LoRa Downlink
183 183  * Firmware upgradable via program port
... ... @@ -185,8 +185,6 @@
185 185  
186 186  
187 187  
188 -
189 -
190 190  == 1.4  Applications ==
191 191  
192 192  
... ... @@ -199,8 +199,6 @@
199 199  
200 200  
201 201  
202 -
203 -
204 204  == 1.5 Hardware Variants ==
205 205  
206 206  
... ... @@ -217,14 +217,17 @@
217 217  
218 218  
219 219  
220 -
221 221  = 2. Power ON Device =
222 222  
223 223  
222 +(((
224 224  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 +)))
225 225  
226 226  (((
227 227  PWR will on when device is properly powered.
228 +
229 +
228 228  )))
229 229  
230 230  [[image:1653297104069-180.png]]
... ... @@ -233,6 +233,7 @@
233 233  
234 234  = 3. Operation Mode =
235 235  
238 +
236 236  == 3.1 How it works? ==
237 237  
238 238  
... ... @@ -277,12 +277,12 @@
277 277  
278 278  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
279 279  
280 -Add APP EUI in the application.
283 +**Add APP EUI in the application.**
281 281  
282 282  [[image:1653297955910-247.png||height="321" width="716"]]
283 283  
284 284  
285 -Add APP KEY and DEV EUI
288 +**Add APP KEY and DEV EUI**
286 286  
287 287  [[image:1653298023685-319.png]]
288 288  
... ... @@ -290,6 +290,8 @@
290 290  
291 291  (((
292 292  (% 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 +
293 293  )))
294 294  
295 295  [[image:1653298044601-602.png||height="405" width="709"]]
... ... @@ -310,12 +310,12 @@
310 310  
311 311  
312 312  
313 -
314 -
315 315  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
316 316  
317 317  
321 +(((
318 318  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
323 +)))
319 319  
320 320  [[image:image-20220523174024-3.png]]
321 321  
... ... @@ -331,7 +331,7 @@
331 331  * DI is for digital input. DIx=1: high or float, DIx=0: low.
332 332  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
333 333  
334 -(% style="color:red" %)Note: DI3 and DO3 bit are not valid for LT-22222-L
339 +(% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
335 335  
336 336  For example if payload is: [[image:image-20220523175847-2.png]]
337 337  
... ... @@ -368,12 +368,12 @@
368 368  
369 369  
370 370  
371 -
372 -
373 373  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
374 374  
375 375  
379 +(((
376 376  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
381 +)))
377 377  
378 378  (((
379 379  Total : 11 bytes payload
... ... @@ -393,7 +393,7 @@
393 393  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
394 394  
395 395  (((
396 -(% style="color:red" %)Note: DO3 bit is not valid for LT-22222-L.
401 +(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
397 397  )))
398 398  
399 399  (((
... ... @@ -405,16 +405,22 @@
405 405  (% class="box infomessage" %)
406 406  (((
407 407  (((
413 +(((
408 408  **AT+MOD=2**
415 +)))
409 409  
417 +(((
410 410  **ATZ**
411 411  )))
412 412  )))
421 +)))
413 413  
414 414  (((
415 415  
416 416  
417 417  (% style="color:#4f81bd" %)**AT Commands for counting:**
427 +
428 +
418 418  )))
419 419  
420 420  (((
... ... @@ -456,7 +456,7 @@
456 456  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
457 457  
458 458  (((
459 -(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
470 +(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
460 460  )))
461 461  
462 462  
... ... @@ -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  
... ... @@ -500,7 +500,7 @@
500 500  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
501 501  
502 502  (((
503 -(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
522 +(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
504 504  )))
505 505  
506 506  (((
... ... @@ -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  )))
... ... @@ -561,7 +561,7 @@
561 561  )))
562 562  
563 563  (((
564 -(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
586 +(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
565 565  )))
566 566  
567 567  (((
... ... @@ -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"]].
... ... @@ -607,6 +607,7 @@
607 607  
608 608  Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
609 609  
636 +
610 610  **Example:**
611 611  
612 612  AT+AVLIM=3000,6000,0,2000   (If AVI1 voltage lower than 3v or higher than 6v. or AV2 voltage is higher than 2v, LT will trigger Uplink)
... ... @@ -619,6 +619,7 @@
619 619  
620 620  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
621 621  
649 +
622 622  **Example:**
623 623  
624 624  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
... ... @@ -637,6 +637,7 @@
637 637  AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
638 638  
639 639  
668 +
640 640  (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
641 641  
642 642  Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
... ... @@ -685,6 +685,7 @@
685 685  10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
686 686  
687 687  
717 +
688 688  (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
689 689  
690 690  [[image:image-20220524090249-3.png]]
... ... @@ -696,6 +696,7 @@
696 696  10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
697 697  
698 698  
729 +
699 699  (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
700 700  
701 701  [[image:image-20220524090456-4.png]]
... ... @@ -709,6 +709,7 @@
709 709  00000101: Means both DI1 and DI2 trigger are enabled.
710 710  
711 711  
743 +
712 712  (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
713 713  
714 714  Downlink command to poll MOD6 status:
... ... @@ -724,7 +724,7 @@
724 724  (((
725 725  
726 726  
727 -**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]]
728 728  )))
729 729  
730 730  
... ... @@ -732,11 +732,15 @@
732 732  == 3.4 ​Configure LT via AT or Downlink ==
733 733  
734 734  
767 +(((
735 735  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
769 +)))
736 736  
737 737  (((
772 +(((
738 738  There are two kinds of Commands:
739 739  )))
775 +)))
740 740  
741 741  * (% 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]]
742 742  
... ... @@ -748,7 +748,9 @@
748 748  === 3.4.1 Common Commands ===
749 749  
750 750  
787 +(((
751 751  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 +)))
752 752  
753 753  
754 754  
... ... @@ -807,6 +807,7 @@
807 807  
808 808  **0x08 FF     **~/~/ Poll an uplink
809 809  
848 +
810 810  **Example**: 0x08FF, ask device to send an Uplink
811 811  
812 812  
... ... @@ -893,10 +893,6 @@
893 893  * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
894 894  * **0x09 01 aa bb cc    ** ~/~/ same as AT+TRIG1=aa,0x(bb cc)
895 895  
896 -
897 -
898 -
899 -
900 900  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
901 901  
902 902  
... ... @@ -975,7 +975,7 @@
975 975  (((
976 976  
977 977  
978 -(% style="color:red" %)Note: ATDC setting must be more than 5min
1013 +(% style="color:red" %)**Note: ATDC setting must be more than 5min**
979 979  )))
980 980  
981 981  
... ... @@ -1003,11 +1003,11 @@
1003 1003  [[image:image-20220524092754-5.png]]
1004 1004  
1005 1005  (((
1006 -(% style="color:red" %)Note: For LT-22222-L, there is no DO3, the last byte can use any value.
1041 +(% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1007 1007  )))
1008 1008  
1009 1009  (((
1010 -(% style="color:red" %)Device will upload a packet if downlink code executes successfully.
1045 +(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1011 1011  )))
1012 1012  
1013 1013  
... ... @@ -1052,11 +1052,11 @@
1052 1052  [[image:image-20220524093351-8.png]]
1053 1053  
1054 1054  
1055 -(% style="color:#4f81bd" %)**Sixth and Seventh Byte**:
1090 +(% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
1056 1056  
1057 1057   Latching time. Unit: ms
1058 1058  
1059 -Device will upload a packet if downlink code executes successfully.
1094 +(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1060 1060  
1061 1061  
1062 1062  **Example payload:**
... ... @@ -1105,7 +1105,7 @@
1105 1105  [[image:image-20220524093724-9.png]]
1106 1106  )))
1107 1107  
1108 -Device will upload a packet if downlink code executes successfully.
1143 +(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1109 1109  
1110 1110  
1111 1111  
... ... @@ -1136,12 +1136,12 @@
1136 1136  
1137 1137  (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1138 1138  
1139 -[[image:image-20220714135731-1.png||height="406" width="627"]]
1174 +[[image:image-20221008095908-1.png||height="364" width="564"]]
1140 1140  
1141 1141  
1142 -(% style="color:#4f81bd" %)**Fourth/Fifth Bytes(cc)**(%%): Latching time. Unit: ms
1177 +(% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1143 1143  
1144 -Device will upload a packet if downlink code executes successfully.
1179 +(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1145 1145  
1146 1146  
1147 1147  **Example payload:**
... ... @@ -1164,7 +1164,6 @@
1164 1164  
1165 1165  
1166 1166  
1167 -
1168 1168  ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1169 1169  
1170 1170  
... ... @@ -1237,11 +1237,124 @@
1237 1237  (((
1238 1238  range: aa bb cc:0 to 16777215,  (unit:second)
1239 1239  
1274 +
1275 +
1240 1240  
1241 1241  )))
1242 1242  
1279 +==== 3.4.2.20 Reset save DR DO state ====
1243 1243  
1244 1244  
1282 +* (% style="color:#037691" %)**AT Command:**
1283 +
1284 +**AT+RODORET=1  **~/~/ RODO will close when the device joining the network. (default)
1285 +
1286 +**AT+RODORET=0  **~/~/After the device is reset, the previously saved RODO state (only MOD2 to MOD5) is read, and its state is not changed when it is reconnected to the network.
1287 +
1288 +
1289 +* (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1290 +
1291 +**0x AD aa      **~/~/ same as AT+RODORET =aa
1292 +
1293 +(((
1294 +
1295 +
1296 +
1297 +
1298 +==== 3.4.2.21 Encrypted payload ====
1299 +
1300 +
1301 +* (% style="color:#037691" %)**AT Command:**
1302 +
1303 +**AT+DECRYPT=1  **~/~/ The payload is uploaded without encryption
1304 +
1305 +**AT+DECRYPT=0  **~/~/Encrypt when uploading payload (default)
1306 +
1307 +
1308 +
1309 +
1310 +==== 3.4.2.22 Get sensor value ====
1311 +
1312 +
1313 +* (% style="color:#037691" %)**AT Command:**
1314 +
1315 +**AT+GETSENSORVALUE=0  **~/~/ The serial port gets the reading of the current sensor
1316 +
1317 +**AT+GETSENSORVALUE=1  **~/~/The serial port gets the current sensor reading and uploads it.
1318 +
1319 +
1320 +
1321 +
1322 +==== 3.4.2.23 Resets the downlink packet count ====
1323 +
1324 +
1325 +* (% style="color:#037691" %)**AT Command:**
1326 +
1327 +**AT+DISFCNTCHECK=0  **~/~/ When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node will no longer receive downlink packets (default)
1328 +
1329 +**AT+DISFCNTCHECK=1  **~/~/When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node resets the downlink packet count and keeps it consistent with the server downlink packet count.
1330 +
1331 +
1332 +
1333 +
1334 +==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1335 +
1336 +
1337 +* (% style="color:#037691" %)**AT Command:**
1338 +
1339 + **AT+DISMACANS=0**  ~/~/ When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of 11 bytes (DR0 of US915, DR2 of AS923, DR2 of AU195), the node will send a packet with a payload of 00 and a port of 4. (default)
1340 +
1341 + **AT+DISMACANS=1**      ~/~/ When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of the DR, the node will ignore the MACANS and not reply, and only upload the payload part.
1342 +
1343 +
1344 +* (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1345 +
1346 +**0x21 00 01 ** ~/~/ Set  the DISMACANS=1
1347 +
1348 +
1349 +
1350 +
1351 +==== 3.4.2.25 Copy downlink to uplink ====
1352 +
1353 +
1354 +* (% style="color:#037691" %)**AT Command**(%%)**:**
1355 +
1356 + **AT+RPL=5**  ~/~/ After receiving the package from the server, it will immediately upload the content of the package to the server, the port number is 100.
1357 +
1358 +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.
1359 +
1360 +
1361 +[[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"]]
1362 +
1363 +For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1364 +
1365 +
1366 +
1367 +[[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"]]
1368 +
1369 +For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1370 +
1371 +
1372 +
1373 +==== 3.4.2.26 Query version number and frequency band 、TDC ====
1374 +
1375 +
1376 +* (((
1377 +(% style="color:#037691" %)**Downlink Payload**(%%)**:**
1378 +
1379 +**26 01  ** ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1380 +
1381 +
1382 +)))
1383 +
1384 +**Example：**
1385 +
1386 +[[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-20220823173929-8.png?width=1205&height=76&rev=1.1||alt="image-20220823173929-8.png"]]
1387 +
1388 +
1389 +
1390 +)))
1391 +
1245 1245  == 3.5 Integrate with Mydevice ==
1246 1246  
1247 1247  
... ... @@ -1340,10 +1340,10 @@
1340 1340  )))
1341 1341  
1342 1342  * (((
1343 -Connect sensor’s output to DI1-
1490 +Connect sensor's output to DI1-
1344 1344  )))
1345 1345  * (((
1346 -Connect sensor’s VCC to DI1+.
1493 +Connect sensor's VCC to DI1+.
1347 1347  )))
1348 1348  
1349 1349  (((
... ... @@ -1351,11 +1351,11 @@
1351 1351  )))
1352 1352  
1353 1353  (((
1354 -[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1501 +[[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1355 1355  )))
1356 1356  
1357 1357  (((
1358 -If DI1+ = 12v, the [[image:1653968155772-850.png||height="23" width="19"]]= 12mA , So the LT-22222-L will be able to detect this active signal.
1505 +If** DI1+ **= **12v**, the [[image:1653968155772-850.png||height="23" width="19"]]= 12mA , So the LT-22222-L will be able to detect this active signal.
1359 1359  )))
1360 1360  
1361 1361  (((
... ... @@ -1373,10 +1373,10 @@
1373 1373  )))
1374 1374  
1375 1375  * (((
1376 -Connect sensor’s output to DI1+
1523 +Connect sensor's output to DI1+
1377 1377  )))
1378 1378  * (((
1379 -Connect sensor’s GND DI1-.
1526 +Connect sensor's GND DI1-.
1380 1380  )))
1381 1381  
1382 1382  (((
... ... @@ -1406,10 +1406,10 @@
1406 1406  )))
1407 1407  
1408 1408  * (((
1409 -Connect sensor’s output to DI1+ with a serial 50K resistor
1556 +Connect sensor's output to DI1+ with a serial 50K resistor
1410 1410  )))
1411 1411  * (((
1412 -Connect sensor’s GND DI1-.
1559 +Connect sensor's GND DI1-.
1413 1413  )))
1414 1414  
1415 1415  (((
... ... @@ -1450,13 +1450,13 @@
1450 1450  We take the wind speed sensor as an example for reference only.
1451 1451  
1452 1452  
1453 -**Specifications of the wind speed sensor:**
1600 +(% style="color:blue" %)**Specifications of the wind speed sensor:**
1454 1454  
1455 -Red:  12~~24v
1602 +**Red:  12~~24v**
1456 1456  
1457 -Yellow:  4~~20mA
1604 +**Yellow:  4~~20mA**
1458 1458  
1459 -Black:  GND
1606 +**Black:  GND**
1460 1460  
1461 1461  
1462 1462  **Connection diagram:**
... ... @@ -1476,6 +1476,7 @@
1476 1476  
1477 1477  [[image:image-20220524100215-9.png]]
1478 1478  
1626 +
1479 1479  [[image:image-20220524100215-10.png||height="382" width="723"]]
1480 1480  
1481 1481  
... ... @@ -1493,8 +1493,14 @@
1493 1493  == 4.1 Access AT Command ==
1494 1494  
1495 1495  
1644 +(((
1496 1496  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 +)))
1497 1497  
1648 +(((
1649 +
1650 +)))
1651 +
1498 1498  [[image:1653358238933-385.png]]
1499 1499  
1500 1500  
... ... @@ -1522,7 +1522,7 @@
1522 1522  )))
1523 1523  
1524 1524  (((
1525 -AT+<CMD>=?       : Get the value
1679 +AT+<CMD>=?       :  Get the value
1526 1526  )))
1527 1527  
1528 1528  (((
... ... @@ -1550,11 +1550,11 @@
1550 1550  )))
1551 1551  
1552 1552  (((
1553 -AT+APPSKEY: Get or Set the Application Session Key
1707 +AT+APPSKEY:  Get or Set the Application Session Key
1554 1554  )))
1555 1555  
1556 1556  (((
1557 -AT+APPEUI: Get or Set the Application EUI
1711 +AT+APPEUI:  Get or Set the Application EUI
1558 1558  )))
1559 1559  
1560 1560  (((
... ... @@ -1566,7 +1566,7 @@
1566 1566  )))
1567 1567  
1568 1568  (((
1569 -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)  
1570 1570  )))
1571 1571  
1572 1572  (((
... ... @@ -1602,7 +1602,7 @@
1602 1602  )))
1603 1603  
1604 1604  (((
1605 -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)
1606 1606  )))
1607 1607  
1608 1608  (((
... ... @@ -1646,7 +1646,7 @@
1646 1646  )))
1647 1647  
1648 1648  (((
1649 -AT+VER: Get current image version and Frequency Band
1803 +AT+VER:  Get current image version and Frequency Band
1650 1650  )))
1651 1651  
1652 1652  (((
... ... @@ -1654,7 +1654,7 @@
1654 1654  )))
1655 1655  
1656 1656  (((
1657 -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)
1658 1658  )))
1659 1659  
1660 1660  (((
... ... @@ -1703,40 +1703,42 @@
1703 1703  (((
1704 1704  
1705 1705  
1706 -**If device has not joined network yet:**
1860 +(((
1861 +(% style="color:blue" %)**If device has not joined network yet:**
1707 1707  )))
1863 +)))
1708 1708  
1709 1709  (((
1710 -(% style="background-color:#dcdcdc" %)123456
1866 +(% style="background-color:#dcdcdc" %)**123456**
1711 1711  )))
1712 1712  
1713 1713  (((
1714 -(% style="background-color:#dcdcdc" %)AT+FDR
1870 +(% style="background-color:#dcdcdc" %)**AT+FDR**
1715 1715  )))
1716 1716  
1717 1717  (((
1718 -(% style="background-color:#dcdcdc" %)123456
1874 +(% style="background-color:#dcdcdc" %)**123456**
1719 1719  )))
1720 1720  
1721 1721  (((
1722 -(% style="background-color:#dcdcdc" %)AT+NJM=0
1878 +(% style="background-color:#dcdcdc" %)**AT+NJM=0**
1723 1723  )))
1724 1724  
1725 1725  (((
1726 -(% style="background-color:#dcdcdc" %)ATZ
1882 +(% style="background-color:#dcdcdc" %)**ATZ**
1727 1727  )))
1728 1728  
1729 1729  
1730 1730  (((
1731 -**If device already joined network:**
1887 +(% style="color:blue" %)**If device already joined network:**
1732 1732  )))
1733 1733  
1734 1734  (((
1735 -(% style="background-color:#dcdcdc" %)AT+NJM=0
1891 +(% style="background-color:#dcdcdc" %)**AT+NJM=0**
1736 1736  )))
1737 1737  
1738 1738  (((
1739 -(% style="background-color:#dcdcdc" %)ATZ
1895 +(% style="background-color:#dcdcdc" %)**ATZ**
1740 1740  )))
1741 1741  
1742 1742  
... ... @@ -1746,55 +1746,57 @@
1746 1746  (((
1747 1747  
1748 1748  
1749 -(% style="background-color:#dcdcdc" %)123456(%%)  Enter Password to have AT access.
1905 +(((
1906 +(% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1750 1750  )))
1908 +)))
1751 1751  
1752 1752  (((
1753 -(% 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
1754 1754  )))
1755 1755  
1756 1756  (((
1757 -(% style="background-color:#dcdcdc" %) 123456(%%)  Enter Password to have AT access.
1915 +(% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1758 1758  )))
1759 1759  
1760 1760  (((
1761 -(% 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
1762 1762  )))
1763 1763  
1764 1764  (((
1765 -(% style="background-color:#dcdcdc" %) AT+NJM=0(%%)  Set to ABP mode
1923 +(% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
1766 1766  )))
1767 1767  
1768 1768  (((
1769 -(% 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
1770 1770  )))
1771 1771  
1772 1772  (((
1773 -(% style="background-color:#dcdcdc" %) AT+DR=5(%%)  Set Data Rate
1931 +(% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
1774 1774  )))
1775 1775  
1776 1776  (((
1777 -(% 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
1778 1778  )))
1779 1779  
1780 1780  (((
1781 -(% 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
1782 1782  )))
1783 1783  
1784 1784  (((
1785 -(% 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)
1786 1786  )))
1787 1787  
1788 1788  (((
1789 -(% 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
1790 1790  )))
1791 1791  
1792 1792  (((
1793 -(% 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.
1794 1794  )))
1795 1795  
1796 1796  (((
1797 -(% style="background-color:#dcdcdc" %) ATZ         (%%) Reset MCU
1955 +(% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
1798 1798  
1799 1799  
1800 1800  )))
... ... @@ -1804,11 +1804,15 @@
1804 1804  )))
1805 1805  
1806 1806  (((
1807 -(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1808 -2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1809 -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.
1810 -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.**
1811 1811  
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 +
1812 1812  
1813 1813  )))
1814 1814  
... ... @@ -1824,12 +1824,15 @@
1824 1824  === 4.2.3 Change to Class A ===
1825 1825  
1826 1826  
1827 -If sensor JOINED
1828 -(% style="background-color:#dcdcdc" %)AT+CLASS=A
1829 -ATZ
1989 +(((
1990 +(% style="color:blue" %)If sensor JOINED:
1830 1830  
1992 +(% style="background-color:#dcdcdc" %)**AT+CLASS=A
1993 +ATZ**
1994 +)))
1831 1831  
1832 1832  
1997 +
1833 1833  = 5. FAQ =
1834 1834  
1835 1835  
... ... @@ -1849,12 +1849,14 @@
1849 1849  
1850 1850  (((
1851 1851  (% style="color:blue" %)**Step1**(%%)**:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1852 -(% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
2017 +(% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:https://www.dropbox.com/sh/g99v0fxcltn9r1y/AADKXQ2v5ZT-S3sxdmbvE7UAa/LT-22222-L/image?dl=0&subfolder_nav_tracking=1]].
1853 1853  (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
1854 1854  
1855 1855  
2021 +(((
1856 1856  (% style="color:blue" %)**For LT-22222-L**(%%):
1857 1857  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 +)))
1858 1858  
1859 1859  
1860 1860  )))
... ... @@ -1905,6 +1905,7 @@
1905 1905  (((
1906 1906  Assume we have a LG02 working in the frequency 868400000 now , below is the step.
1907 1907  
2075 +
1908 1908  
1909 1909  )))
1910 1910  )))
... ... @@ -1911,10 +1911,14 @@
1911 1911  
1912 1912  (((
1913 1913  (% style="color:blue" %)**Step1**(%%):  Log in TTN, Create an ABP device in the application and input the network session key (NETSKEY), app session key (APPSKEY) from the device.
2082 +
2083 +
1914 1914  )))
1915 1915  
1916 1916  (((
1917 1917  [[image:1653360231087-571.png||height="401" width="727"]]
2088 +
2089 +
1918 1918  )))
1919 1919  
1920 1920  (((
... ... @@ -1922,21 +1922,23 @@
1922 1922  )))
1923 1923  
1924 1924  
2097 +
1925 1925  (((
1926 1926  (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2100 +
2101 +
1927 1927  )))
1928 1928  
1929 1929  (((
1930 -(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access.
1931 -(% style="background-color:#dcdcdc" %)AT+FDR(%%)  Reset Parameters to Factory Default, Keys Reserve
1932 -(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access.
1933 -(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%) Set to ABP mode
1934 -(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%) Set the Adaptive Data Rate Off
1935 -(% style="background-color:#dcdcdc" %)AT+DR=5 (%%) Set Data Rate (Set AT+DR=3 for 915 band)
1936 -(% style="background-color:#dcdcdc" %)AT+TDC=60000 (%%) Set transmit interval to 60 seconds
1937 -(% style="background-color:#dcdcdc" %)AT+CHS=868400000(%%)  Set transmit frequency to 868.4Mhz
1938 -(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%)  Set Device Address to 26 01 1A F1
1939 -(% 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
1940 1940  )))
1941 1941  
1942 1942  
... ... @@ -1979,7 +1979,19 @@
1979 1979  
1980 1980  
1981 1981  
2156 +== 5.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2157 +
2158 +
2159 +LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2160 +
2161 +
2162 +[[image:image-20221006170630-1.png||height="610" width="945"]]
2163 +
2164 +
2165 +
1982 1982  = 6. Trouble Shooting =
2167 +
2168 +
1983 1983  )))
1984 1984  
1985 1985  (((
... ... @@ -2080,5 +2080,3 @@
2080 2080  * 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]]
2081 2081  * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2082 2082  * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2083 -
2084 -
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