Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 90.8 >
edited by Xiaoling
on 2022/08/18 13:42
To version < 101.3 >
edited by Xiaoling
on 2022/10/25 15:22
>
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  * (((
... ... @@ -177,13 +177,12 @@
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
184 184  * Counting
185 185  
186 -
187 187  == 1.4  Applications ==
188 188  
189 189  
... ... @@ -194,7 +194,6 @@
194 194  * Smart Cities
195 195  * Smart Factory
196 196  
197 -
198 198  == 1.5 Hardware Variants ==
199 199  
200 200  
... ... @@ -212,10 +212,14 @@
212 212  = 2. Power ON Device =
213 213  
214 214  
216 +(((
215 215  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.
218 +)))
216 216  
217 217  (((
218 218  PWR will on when device is properly powered.
222 +
223 +
219 219  )))
220 220  
221 221  [[image:1653297104069-180.png]]
... ... @@ -224,6 +224,7 @@
224 224  
225 225  = 3. Operation Mode =
226 226  
232 +
227 227  == 3.1 How it works? ==
228 228  
229 229  
... ... @@ -268,12 +268,12 @@
268 268  
269 269  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
270 270  
271 -Add APP EUI in the application.
277 +**Add APP EUI in the application.**
272 272  
273 273  [[image:1653297955910-247.png||height="321" width="716"]]
274 274  
275 275  
276 -Add APP KEY and DEV EUI
282 +**Add APP KEY and DEV EUI**
277 277  
278 278  [[image:1653298023685-319.png]]
279 279  
... ... @@ -281,6 +281,8 @@
281 281  
282 282  (((
283 283  (% 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.
290 +
291 +
284 284  )))
285 285  
286 286  [[image:1653298044601-602.png||height="405" width="709"]]
... ... @@ -299,11 +299,12 @@
299 299  * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
300 300  * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
301 301  
302 -
303 303  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
304 304  
305 305  
313 +(((
306 306  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
315 +)))
307 307  
308 308  [[image:image-20220523174024-3.png]]
309 309  
... ... @@ -319,7 +319,7 @@
319 319  * DI is for digital input. DIx=1: high or float, DIx=0: low.
320 320  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
321 321  
322 -(% style="color:red" %)Note: DI3 and DO3 bit are not valid for LT-22222-L
331 +(% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
323 323  
324 324  For example if payload is: [[image:image-20220523175847-2.png]]
325 325  
... ... @@ -354,11 +354,12 @@
354 354  ** DO1 is high in case there is load between DO1 and V+.
355 355  ** DO1 LED is off in both case
356 356  
357 -
358 358  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
359 359  
360 360  
369 +(((
361 361  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
371 +)))
362 362  
363 363  (((
364 364  Total : 11 bytes payload
... ... @@ -378,7 +378,7 @@
378 378  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
379 379  
380 380  (((
381 -(% style="color:red" %)Note: DO3 bit is not valid for LT-22222-L.
391 +(% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
382 382  )))
383 383  
384 384  (((
... ... @@ -390,16 +390,22 @@
390 390  (% class="box infomessage" %)
391 391  (((
392 392  (((
403 +(((
393 393  **AT+MOD=2**
405 +)))
394 394  
407 +(((
395 395  **ATZ**
396 396  )))
397 397  )))
411 +)))
398 398  
399 399  (((
400 400  
401 401  
402 402  (% style="color:#4f81bd" %)**AT Commands for counting:**
417 +
418 +
403 403  )))
404 404  
405 405  (((
... ... @@ -441,7 +441,7 @@
441 441  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
442 442  
443 443  (((
444 -(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
460 +(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
445 445  )))
446 446  
447 447  
... ... @@ -452,11 +452,15 @@
452 452  (% class="box infomessage" %)
453 453  (((
454 454  (((
471 +(((
455 455  **AT+MOD=3**
473 +)))
456 456  
475 +(((
457 457  **ATZ**
458 458  )))
459 459  )))
479 +)))
460 460  
461 461  (((
462 462  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
... ... @@ -467,9 +467,13 @@
467 467  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
468 468  
469 469  
490 +(((
470 470  **LT22222-L**: This mode the DI1 is used as a counting pin.
492 +)))
471 471  
494 +(((
472 472  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.
496 +)))
473 473  
474 474  [[image:image-20220523181903-8.png]]
475 475  
... ... @@ -485,7 +485,7 @@
485 485  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
486 486  
487 487  (((
488 -(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
512 +(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
489 489  )))
490 490  
491 491  (((
... ... @@ -497,14 +497,17 @@
497 497  (% class="box infomessage" %)
498 498  (((
499 499  (((
524 +(((
500 500  **AT+MOD=4**
526 +)))
501 501  
528 +(((
502 502  **ATZ**
503 503  )))
504 504  )))
532 +)))
505 505  
506 506  
507 -
508 508  (((
509 509  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
510 510  )))
... ... @@ -546,7 +546,7 @@
546 546  )))
547 547  
548 548  (((
549 -(% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
576 +(% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
550 550  )))
551 551  
552 552  (((
... ... @@ -558,11 +558,15 @@
558 558  (% class="box infomessage" %)
559 559  (((
560 560  (((
588 +(((
561 561  **AT+MOD=5**
590 +)))
562 562  
592 +(((
563 563  **ATZ**
564 564  )))
565 565  )))
596 +)))
566 566  
567 567  (((
568 568  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
... ... @@ -592,6 +592,7 @@
592 592  
593 593  Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
594 594  
626 +
595 595  **Example:**
596 596  
597 597  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)
... ... @@ -604,6 +604,7 @@
604 604  
605 605  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
606 606  
639 +
607 607  **Example:**
608 608  
609 609  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
... ... @@ -622,6 +622,7 @@
622 622  AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
623 623  
624 624  
658 +
625 625  (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
626 626  
627 627  Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
... ... @@ -670,6 +670,7 @@
670 670  10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
671 671  
672 672  
707 +
673 673  (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
674 674  
675 675  [[image:image-20220524090249-3.png]]
... ... @@ -681,6 +681,7 @@
681 681  10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
682 682  
683 683  
719 +
684 684  (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
685 685  
686 686  [[image:image-20220524090456-4.png]]
... ... @@ -694,6 +694,7 @@
694 694  00000101: Means both DI1 and DI2 trigger are enabled.
695 695  
696 696  
733 +
697 697  (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
698 698  
699 699  Downlink command to poll MOD6 status:
... ... @@ -704,12 +704,13 @@
704 704  
705 705  
706 706  
744 +
707 707  === 3.3.7 Payload Decoder ===
708 708  
709 709  (((
710 710  
711 711  
712 -**Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/www.dropbox.com/sh/wtrzu7avdtkmn3z/AACK5NwOMkU9jnvf1uCMuqrVa?dl=0>>https://www.dropbox.com/sh/wtrzu7avdtkmn3z/AACK5NwOMkU9jnvf1uCMuqrVa?dl=0]]
750 +**Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
713 713  )))
714 714  
715 715  
... ... @@ -717,22 +717,26 @@
717 717  == 3.4 ​Configure LT via AT or Downlink ==
718 718  
719 719  
758 +(((
720 720  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
760 +)))
721 721  
722 722  (((
763 +(((
723 723  There are two kinds of Commands:
724 724  )))
766 +)))
725 725  
726 726  * (% 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]]
727 727  
728 728  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
729 729  
730 -
731 -
732 732  === 3.4.1 Common Commands ===
733 733  
734 734  
775 +(((
735 735  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]]
777 +)))
736 736  
737 737  
738 738  
... ... @@ -791,6 +791,7 @@
791 791  
792 792  **0x08 FF     **~/~/ Poll an uplink
793 793  
836 +
794 794  **Example**: 0x08FF, ask device to send an Uplink
795 795  
796 796  
... ... @@ -877,7 +877,6 @@
877 877  * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
878 878  * **0x09 01 aa bb cc    ** ~/~/ same as AT+TRIG1=aa,0x(bb cc)
879 879  
880 -
881 881  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
882 882  
883 883  
... ... @@ -956,7 +956,7 @@
956 956  (((
957 957  
958 958  
959 -(% style="color:red" %)Note: ATDC setting must be more than 5min
1001 +(% style="color:red" %)**Note: ATDC setting must be more than 5min**
960 960  )))
961 961  
962 962  
... ... @@ -984,11 +984,11 @@
984 984  [[image:image-20220524092754-5.png]]
985 985  
986 986  (((
987 -(% style="color:red" %)Note: For LT-22222-L, there is no DO3, the last byte can use any value.
1029 +(% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
988 988  )))
989 989  
990 990  (((
991 -(% style="color:red" %)Device will upload a packet if downlink code executes successfully.
1033 +(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
992 992  )))
993 993  
994 994  
... ... @@ -1033,11 +1033,11 @@
1033 1033  [[image:image-20220524093351-8.png]]
1034 1034  
1035 1035  
1036 -(% style="color:#4f81bd" %)**Sixth and Seventh Byte**:
1078 +(% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
1037 1037  
1038 1038   Latching time. Unit: ms
1039 1039  
1040 -Device will upload a packet if downlink code executes successfully.
1082 +(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1041 1041  
1042 1042  
1043 1043  **Example payload:**
... ... @@ -1086,7 +1086,7 @@
1086 1086  [[image:image-20220524093724-9.png]]
1087 1087  )))
1088 1088  
1089 -Device will upload a packet if downlink code executes successfully.
1131 +(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1090 1090  
1091 1091  
1092 1092  
... ... @@ -1117,12 +1117,12 @@
1117 1117  
1118 1118  (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1119 1119  
1120 -[[image:image-20220714135731-1.png||height="406" width="627"]]
1162 +[[image:image-20221008095908-1.png||height="364" width="564"]]
1121 1121  
1122 1122  
1123 -(% style="color:#4f81bd" %)**Fourth/Fifth Bytes(cc)**(%%): Latching time. Unit: ms
1165 +(% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1124 1124  
1125 -Device will upload a packet if downlink code executes successfully.
1167 +(% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1126 1126  
1127 1127  
1128 1128  **Example payload:**
... ... @@ -1145,7 +1145,6 @@
1145 1145  
1146 1146  
1147 1147  
1148 -
1149 1149  ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1150 1150  
1151 1151  
... ... @@ -1218,11 +1218,124 @@
1218 1218  (((
1219 1219  range: aa bb cc:0 to 16777215,  (unit:second)
1220 1220  
1262 +
1263 +
1221 1221  
1222 1222  )))
1223 1223  
1267 +==== 3.4.2.20 Reset save DR DO state ====
1224 1224  
1225 1225  
1270 +* (% style="color:#037691" %)**AT Command:**
1271 +
1272 +**AT+RODORET=1  **~/~/ RODO will close when the device joining the network. (default)
1273 +
1274 +**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.
1275 +
1276 +
1277 +* (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1278 +
1279 +**0x AD aa      **~/~/ same as AT+RODORET =aa
1280 +
1281 +(((
1282 +
1283 +
1284 +
1285 +
1286 +==== 3.4.2.21 Encrypted payload ====
1287 +
1288 +
1289 +* (% style="color:#037691" %)**AT Command:**
1290 +
1291 +**AT+DECRYPT=1  **~/~/ The payload is uploaded without encryption
1292 +
1293 +**AT+DECRYPT=0  **~/~/Encrypt when uploading payload (default)
1294 +
1295 +
1296 +
1297 +
1298 +==== 3.4.2.22 Get sensor value ====
1299 +
1300 +
1301 +* (% style="color:#037691" %)**AT Command:**
1302 +
1303 +**AT+GETSENSORVALUE=0  **~/~/ The serial port gets the reading of the current sensor
1304 +
1305 +**AT+GETSENSORVALUE=1  **~/~/The serial port gets the current sensor reading and uploads it.
1306 +
1307 +
1308 +
1309 +
1310 +==== 3.4.2.23 Resets the downlink packet count ====
1311 +
1312 +
1313 +* (% style="color:#037691" %)**AT Command:**
1314 +
1315 +**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)
1316 +
1317 +**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.
1318 +
1319 +
1320 +
1321 +
1322 +==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1323 +
1324 +
1325 +* (% style="color:#037691" %)**AT Command:**
1326 +
1327 + **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)
1328 +
1329 + **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.
1330 +
1331 +
1332 +* (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1333 +
1334 +**0x21 00 01 ** ~/~/ Set  the DISMACANS=1
1335 +
1336 +
1337 +
1338 +
1339 +==== 3.4.2.25 Copy downlink to uplink ====
1340 +
1341 +
1342 +* (% style="color:#037691" %)**AT Command**(%%)**:**
1343 +
1344 + **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.
1345 +
1346 +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.
1347 +
1348 +
1349 +[[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"]]
1350 +
1351 +For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1352 +
1353 +
1354 +
1355 +[[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"]]
1356 +
1357 +For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1358 +
1359 +
1360 +
1361 +==== 3.4.2.26 Query version number and frequency band 、TDC ====
1362 +
1363 +
1364 +* (((
1365 +(% style="color:#037691" %)**Downlink Payload**(%%)**:**
1366 +
1367 +**26 01  ** ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1368 +
1369 +
1370 +)))
1371 +
1372 +**Example：**
1373 +
1374 +[[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"]]
1375 +
1376 +
1377 +
1378 +)))
1379 +
1226 1226  == 3.5 Integrate with Mydevice ==
1227 1227  
1228 1228  
... ... @@ -1321,10 +1321,10 @@
1321 1321  )))
1322 1322  
1323 1323  * (((
1324 -Connect sensor’s output to DI1-
1478 +Connect sensor's output to DI1-
1325 1325  )))
1326 1326  * (((
1327 -Connect sensor’s VCC to DI1+.
1481 +Connect sensor's VCC to DI1+.
1328 1328  )))
1329 1329  
1330 1330  (((
... ... @@ -1332,11 +1332,11 @@
1332 1332  )))
1333 1333  
1334 1334  (((
1335 -[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1489 +[[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1336 1336  )))
1337 1337  
1338 1338  (((
1339 -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.
1493 +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.
1340 1340  )))
1341 1341  
1342 1342  (((
... ... @@ -1354,10 +1354,10 @@
1354 1354  )))
1355 1355  
1356 1356  * (((
1357 -Connect sensor’s output to DI1+
1511 +Connect sensor's output to DI1+
1358 1358  )))
1359 1359  * (((
1360 -Connect sensor’s GND DI1-.
1514 +Connect sensor's GND DI1-.
1361 1361  )))
1362 1362  
1363 1363  (((
... ... @@ -1387,10 +1387,10 @@
1387 1387  )))
1388 1388  
1389 1389  * (((
1390 -Connect sensor’s output to DI1+ with a serial 50K resistor
1544 +Connect sensor's output to DI1+ with a serial 50K resistor
1391 1391  )))
1392 1392  * (((
1393 -Connect sensor’s GND DI1-.
1547 +Connect sensor's GND DI1-.
1394 1394  )))
1395 1395  
1396 1396  (((
... ... @@ -1431,13 +1431,13 @@
1431 1431  We take the wind speed sensor as an example for reference only.
1432 1432  
1433 1433  
1434 -**Specifications of the wind speed sensor:**
1588 +(% style="color:blue" %)**Specifications of the wind speed sensor:**
1435 1435  
1436 -Red:  12~~24v
1590 +**Red:  12~~24v**
1437 1437  
1438 -Yellow:  4~~20mA
1592 +**Yellow:  4~~20mA**
1439 1439  
1440 -Black:  GND
1594 +**Black:  GND**
1441 1441  
1442 1442  
1443 1443  **Connection diagram:**
... ... @@ -1457,6 +1457,7 @@
1457 1457  
1458 1458  [[image:image-20220524100215-9.png]]
1459 1459  
1614 +
1460 1460  [[image:image-20220524100215-10.png||height="382" width="723"]]
1461 1461  
1462 1462  
... ... @@ -1474,8 +1474,14 @@
1474 1474  == 4.1 Access AT Command ==
1475 1475  
1476 1476  
1632 +(((
1477 1477  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.
1634 +)))
1478 1478  
1636 +(((
1637 +
1638 +)))
1639 +
1479 1479  [[image:1653358238933-385.png]]
1480 1480  
1481 1481  
... ... @@ -1503,7 +1503,7 @@
1503 1503  )))
1504 1504  
1505 1505  (((
1506 -AT+<CMD>=?       : Get the value
1667 +AT+<CMD>=?       :  Get the value
1507 1507  )))
1508 1508  
1509 1509  (((
... ... @@ -1531,11 +1531,11 @@
1531 1531  )))
1532 1532  
1533 1533  (((
1534 -AT+APPSKEY: Get or Set the Application Session Key
1695 +AT+APPSKEY:  Get or Set the Application Session Key
1535 1535  )))
1536 1536  
1537 1537  (((
1538 -AT+APPEUI: Get or Set the Application EUI
1699 +AT+APPEUI:  Get or Set the Application EUI
1539 1539  )))
1540 1540  
1541 1541  (((
... ... @@ -1547,7 +1547,7 @@
1547 1547  )))
1548 1548  
1549 1549  (((
1550 -AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1711 +AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1551 1551  )))
1552 1552  
1553 1553  (((
... ... @@ -1583,7 +1583,7 @@
1583 1583  )))
1584 1584  
1585 1585  (((
1586 -AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1747 +AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1587 1587  )))
1588 1588  
1589 1589  (((
... ... @@ -1627,7 +1627,7 @@
1627 1627  )))
1628 1628  
1629 1629  (((
1630 -AT+VER: Get current image version and Frequency Band
1791 +AT+VER:  Get current image version and Frequency Band
1631 1631  )))
1632 1632  
1633 1633  (((
... ... @@ -1635,7 +1635,7 @@
1635 1635  )))
1636 1636  
1637 1637  (((
1638 -AT+CFS: Get confirmation status of the last AT+SEND (0-1)
1799 +AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1639 1639  )))
1640 1640  
1641 1641  (((
... ... @@ -1684,40 +1684,42 @@
1684 1684  (((
1685 1685  
1686 1686  
1687 -**If device has not joined network yet:**
1848 +(((
1849 +(% style="color:blue" %)**If device has not joined network yet:**
1688 1688  )))
1851 +)))
1689 1689  
1690 1690  (((
1691 -(% style="background-color:#dcdcdc" %)123456
1854 +(% style="background-color:#dcdcdc" %)**123456**
1692 1692  )))
1693 1693  
1694 1694  (((
1695 -(% style="background-color:#dcdcdc" %)AT+FDR
1858 +(% style="background-color:#dcdcdc" %)**AT+FDR**
1696 1696  )))
1697 1697  
1698 1698  (((
1699 -(% style="background-color:#dcdcdc" %)123456
1862 +(% style="background-color:#dcdcdc" %)**123456**
1700 1700  )))
1701 1701  
1702 1702  (((
1703 -(% style="background-color:#dcdcdc" %)AT+NJM=0
1866 +(% style="background-color:#dcdcdc" %)**AT+NJM=0**
1704 1704  )))
1705 1705  
1706 1706  (((
1707 -(% style="background-color:#dcdcdc" %)ATZ
1870 +(% style="background-color:#dcdcdc" %)**ATZ**
1708 1708  )))
1709 1709  
1710 1710  
1711 1711  (((
1712 -**If device already joined network:**
1875 +(% style="color:blue" %)**If device already joined network:**
1713 1713  )))
1714 1714  
1715 1715  (((
1716 -(% style="background-color:#dcdcdc" %)AT+NJM=0
1879 +(% style="background-color:#dcdcdc" %)**AT+NJM=0**
1717 1717  )))
1718 1718  
1719 1719  (((
1720 -(% style="background-color:#dcdcdc" %)ATZ
1883 +(% style="background-color:#dcdcdc" %)**ATZ**
1721 1721  )))
1722 1722  
1723 1723  
... ... @@ -1727,55 +1727,57 @@
1727 1727  (((
1728 1728  
1729 1729  
1730 -(% style="background-color:#dcdcdc" %)123456(%%)  Enter Password to have AT access.
1893 +(((
1894 +(% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1731 1731  )))
1896 +)))
1732 1732  
1733 1733  (((
1734 -(% style="background-color:#dcdcdc" %) AT+FDR(%%)   Reset Parameters to Factory Default, Keys Reserve
1899 +(% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
1735 1735  )))
1736 1736  
1737 1737  (((
1738 -(% style="background-color:#dcdcdc" %) 123456(%%)  Enter Password to have AT access.
1903 +(% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1739 1739  )))
1740 1740  
1741 1741  (((
1742 -(% style="background-color:#dcdcdc" %) AT+CLASS=C(%%) Set to work in CLASS C
1907 +(% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
1743 1743  )))
1744 1744  
1745 1745  (((
1746 -(% style="background-color:#dcdcdc" %) AT+NJM=0(%%)  Set to ABP mode
1911 +(% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
1747 1747  )))
1748 1748  
1749 1749  (((
1750 -(% style="background-color:#dcdcdc" %) AT+ADR=0(%%)  Set the Adaptive Data Rate Off
1915 +(% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
1751 1751  )))
1752 1752  
1753 1753  (((
1754 -(% style="background-color:#dcdcdc" %) AT+DR=5(%%)  Set Data Rate
1919 +(% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
1755 1755  )))
1756 1756  
1757 1757  (((
1758 -(% style="background-color:#dcdcdc" %) AT+TDC=60000(%%)  Set transmit interval to 60 seconds
1923 +(% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
1759 1759  )))
1760 1760  
1761 1761  (((
1762 -(% style="background-color:#dcdcdc" %) AT+CHS=868400000(%%)  Set transmit frequency to 868.4Mhz
1927 +(% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
1763 1763  )))
1764 1764  
1765 1765  (((
1766 -(% style="background-color:#dcdcdc" %) AT+RX2FQ=868400000(%%)  Set RX2Frequency to 868.4Mhz (according to the result from server)
1931 +(% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
1767 1767  )))
1768 1768  
1769 1769  (((
1770 -(% style="background-color:#dcdcdc" %) AT+RX2DR=5(%%)  Set RX2DR to match the downlink DR from server. see below
1935 +(% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
1771 1771  )))
1772 1772  
1773 1773  (((
1774 -(% 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.
1939 +(% 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.
1775 1775  )))
1776 1776  
1777 1777  (((
1778 -(% style="background-color:#dcdcdc" %) ATZ         (%%) Reset MCU
1943 +(% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
1779 1779  
1780 1780  
1781 1781  )))
... ... @@ -1785,10 +1785,16 @@
1785 1785  )))
1786 1786  
1787 1787  (((
1788 -(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1789 -2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1790 -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.
1791 -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
1953 +**~1. Make sure the device is set to ABP mode in the IoT Server.**
1954 +
1955 +**2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
1956 +
1957 +**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?
1958 +dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1959 +
1960 +**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**
1961 +
1962 +
1792 1792  )))
1793 1793  
1794 1794  (((
... ... @@ -1803,12 +1803,15 @@
1803 1803  === 4.2.3 Change to Class A ===
1804 1804  
1805 1805  
1806 -If sensor JOINED
1807 -(% style="background-color:#dcdcdc" %)AT+CLASS=A
1808 -ATZ
1977 +(((
1978 +(% style="color:blue" %)If sensor JOINED:
1809 1809  
1980 +(% style="background-color:#dcdcdc" %)**AT+CLASS=A
1981 +ATZ**
1982 +)))
1810 1810  
1811 1811  
1985 +
1812 1812  = 5. FAQ =
1813 1813  
1814 1814  
... ... @@ -1828,12 +1828,14 @@
1828 1828  
1829 1829  (((
1830 1830  (% 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]].
1831 -(% 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/]].
2005 +(% 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]].
1832 1832  (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
1833 1833  
1834 1834  
2009 +(((
1835 1835  (% style="color:blue" %)**For LT-22222-L**(%%):
1836 1836  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.
2012 +)))
1837 1837  
1838 1838  
1839 1839  )))
... ... @@ -1884,6 +1884,7 @@
1884 1884  (((
1885 1885  Assume we have a LG02 working in the frequency 868400000 now , below is the step.
1886 1886  
2063 +
1887 1887  
1888 1888  )))
1889 1889  )))
... ... @@ -1890,10 +1890,14 @@
1890 1890  
1891 1891  (((
1892 1892  (% 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.
2070 +
2071 +
1893 1893  )))
1894 1894  
1895 1895  (((
1896 1896  [[image:1653360231087-571.png||height="401" width="727"]]
2076 +
2077 +
1897 1897  )))
1898 1898  
1899 1899  (((
... ... @@ -1901,21 +1901,23 @@
1901 1901  )))
1902 1902  
1903 1903  
2085 +
1904 1904  (((
1905 1905  (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2088 +
2089 +
1906 1906  )))
1907 1907  
1908 1908  (((
1909 -(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access.
1910 -(% style="background-color:#dcdcdc" %)AT+FDR(%%)  Reset Parameters to Factory Default, Keys Reserve
1911 -(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access.
1912 -(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%) Set to ABP mode
1913 -(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%) Set the Adaptive Data Rate Off
1914 -(% style="background-color:#dcdcdc" %)AT+DR=5 (%%) Set Data Rate (Set AT+DR=3 for 915 band)
1915 -(% style="background-color:#dcdcdc" %)AT+TDC=60000 (%%) Set transmit interval to 60 seconds
1916 -(% style="background-color:#dcdcdc" %)AT+CHS=868400000(%%)  Set transmit frequency to 868.4Mhz
1917 -(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%)  Set Device Address to 26 01 1A F1
1918 -(% style="background-color:#dcdcdc" %)ATZ        (%%) Reset MCU
2093 +(% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2094 +(% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2095 +(% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2096 +(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2097 +(% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2098 +(% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2099 +(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2100 +(% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2101 +(% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
1919 1919  )))
1920 1920  
1921 1921  
... ... @@ -1958,7 +1958,19 @@
1958 1958  
1959 1959  
1960 1960  
2144 +== 5.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2145 +
2146 +
2147 +LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2148 +
2149 +
2150 +[[image:image-20221006170630-1.png||height="610" width="945"]]
2151 +
2152 +
2153 +
1961 1961  = 6. Trouble Shooting =
2155 +
2156 +
1962 1962  )))
1963 1963  
1964 1964  (((
... ... @@ -2050,7 +2050,6 @@
2050 2050  
2051 2051  
2052 2052  
2053 -
2054 2054  
2055 2055  )))
2056 2056  
... ... @@ -2060,5 +2060,3 @@
2060 2060  * 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]]
2061 2061  * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2062 2062  * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2063 -
2064 -
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