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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 66.27
edited by Xiaoling
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To version 54.1
edited by Xiaoling
on 2022/05/24 10:02
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Summary

Details

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Content
... ... @@ -45,114 +45,44 @@
45 45  
46 46  == 1.2  Specifications ==
47 47  
48 -(((
49 49  **Hardware System:**
50 -)))
51 51  
52 -* (((
53 -STM32L072CZT6 MCU
54 -)))
55 -* (((
56 -SX1276/78 Wireless Chip 
57 -)))
58 -* (((
59 -(((
60 -Power Consumption:
61 -)))
50 +* STM32L072CZT6 MCU
51 +* SX1276/78 Wireless Chip 
52 +* Power Consumption:
53 +** Idle: 4mA@12v
54 +** 20dB Transmit: 34mA@12v
62 62  
63 -* (((
64 -Idle: 4mA@12v
65 -)))
66 -* (((
67 -20dB Transmit: 34mA@12v
68 -)))
69 -)))
70 -
71 -(((
72 72  **Interface for Model: LT22222-L:**
73 -)))
74 74  
75 -* (((
76 -2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
77 -)))
78 -* (((
79 -2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
80 -)))
81 -* (((
82 -2 x Relay Output (5A@250VAC / 30VDC)
83 -)))
84 -* (((
85 -2 x 0~~20mA Analog Input (res:0.01mA)
86 -)))
87 -* (((
88 -2 x 0~~30V Analog Input (res:0.01v)
89 -)))
90 -* (((
91 -Power Input 7~~ 24V DC. 
92 -)))
58 +* 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
59 +* 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
60 +* 2 x Relay Output (5A@250VAC / 30VDC)
61 +* 2 x 0~~20mA Analog Input (res:0.01mA)
62 +* 2 x 0~~30V Analog Input (res:0.01v)
63 +* Power Input 7~~ 24V DC. 
93 93  
94 -(((
95 95  **LoRa Spec:**
96 -)))
97 97  
98 -* (((
99 -(((
100 -Frequency Range:
101 -)))
67 +* Frequency Range:
68 +** Band 1 (HF): 862 ~~ 1020 Mhz
69 +** Band 2 (LF): 410 ~~ 528 Mhz
70 +* 168 dB maximum link budget.
71 +* +20 dBm - 100 mW constant RF output vs.
72 +* +14 dBm high efficiency PA.
73 +* Programmable bit rate up to 300 kbps.
74 +* High sensitivity: down to -148 dBm.
75 +* Bullet-proof front end: IIP3 = -12.5 dBm.
76 +* Excellent blocking immunity.
77 +* Low RX current of 10.3 mA, 200 nA register retention.
78 +* Fully integrated synthesizer with a resolution of 61 Hz.
79 +* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
80 +* Built-in bit synchronizer for clock recovery.
81 +* Preamble detection.
82 +* 127 dB Dynamic Range RSSI.
83 +* Automatic RF Sense and CAD with ultra-fast AFC.
84 +* Packet engine up to 256 bytes with CRC.
102 102  
103 -* (((
104 -Band 1 (HF): 862 ~~ 1020 Mhz
105 -)))
106 -* (((
107 -Band 2 (LF): 410 ~~ 528 Mhz
108 -)))
109 -)))
110 -* (((
111 -168 dB maximum link budget.
112 -)))
113 -* (((
114 -+20 dBm - 100 mW constant RF output vs.
115 -)))
116 -* (((
117 -+14 dBm high efficiency PA.
118 -)))
119 -* (((
120 -Programmable bit rate up to 300 kbps.
121 -)))
122 -* (((
123 -High sensitivity: down to -148 dBm.
124 -)))
125 -* (((
126 -Bullet-proof front end: IIP3 = -12.5 dBm.
127 -)))
128 -* (((
129 -Excellent blocking immunity.
130 -)))
131 -* (((
132 -Low RX current of 10.3 mA, 200 nA register retention.
133 -)))
134 -* (((
135 -Fully integrated synthesizer with a resolution of 61 Hz.
136 -)))
137 -* (((
138 -FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
139 -)))
140 -* (((
141 -Built-in bit synchronizer for clock recovery.
142 -)))
143 -* (((
144 -Preamble detection.
145 -)))
146 -* (((
147 -127 dB Dynamic Range RSSI.
148 -)))
149 -* (((
150 -Automatic RF Sense and CAD with ultra-fast AFC.
151 -)))
152 -* (((
153 -Packet engine up to 256 bytes with CRC.
154 -)))
155 -
156 156  == 1.3 Features ==
157 157  
158 158  * LoRaWAN Class A & Class C protocol
... ... @@ -199,21 +199,13 @@
199 199  
200 200  == 3.1 How it works? ==
201 201  
202 -(((
203 203  The LT is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the LT. It will auto join the network via OTAA. For LT-22222-L, the LED will show the Join status: After power on **TX LED** will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. **TX LED** will be on for 5 seconds after joined in network. When there is message from server, the **RX LED** will be on for 1 second. 
204 -)))
205 205  
206 -(((
207 -In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H4.UseATCommand]] to set the keys in the devices.
208 -)))
134 +In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>path:#AT_Command]] to set the keys in the devices.
209 209  
210 -(((
211 211  3.2 Example to join LoRaWAN network
212 -)))
213 213  
214 -(((
215 215  This chapter shows an example for how to join the TTN LoRaWAN Network. Below is the network structure, we use our LG308 as LoRaWAN gateway here. 
216 -)))
217 217  
218 218  [[image:image-20220523172350-1.png||height="266" width="864"]]
219 219  
... ... @@ -313,9 +313,7 @@
313 313  
314 314  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
315 315  
316 -(((
317 317  Total : 11 bytes payload
318 -)))
319 319  
320 320  [[image:image-20220523180452-3.png]]
321 321  
... ... @@ -329,77 +329,53 @@
329 329  * FIRST: Indicate this is the first packet after join network.
330 330  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
331 331  
332 -(((
333 333  (% style="color:red" %)Note: DO3 bit is not valid for LT-22222-L.
334 -)))
335 335  
336 -(((
337 337  **To use counting mode, please run:**
338 -)))
339 339  
340 340  (% class="box infomessage" %)
341 341  (((
342 -(((
343 343  **AT+MOD=2**
344 344  )))
345 -)))
346 346  
347 347  (% class="box infomessage" %)
348 348  (((
349 -(((
350 350  **ATZ**
351 351  )))
352 -)))
353 353  
354 -(((
355 355  (% style="color:#4f81bd" %)**AT Commands for counting:**
356 -)))
357 357  
358 -(((
359 359  **For LT22222-L:**
360 -)))
361 361  
362 362  (% class="box infomessage" %)
363 363  (((
364 -(((
365 365  **AT+TRIG1=0,100 (set DI1 port to trigger on low level, valid signal is 100ms) **
366 366  )))
367 -)))
368 368  
369 369  (% class="box infomessage" %)
370 370  (((
371 -(((
372 372  **AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms ) **
373 373  )))
374 -)))
375 375  
376 376  (% class="box infomessage" %)
377 377  (((
378 -(((
379 379  **AT+TRIG2=0,100 (set DI2 port to trigger on low level, valid signal is 100ms) **
380 380  )))
381 -)))
382 382  
383 383  (% class="box infomessage" %)
384 384  (((
385 -(((
386 386  **AT+TRIG2=1,100 (set DI2 port to trigger on high level, valid signal is 100ms ) **
387 387  )))
388 -)))
389 389  
390 390  (% class="box infomessage" %)
391 391  (((
392 -(((
393 393  **AT+SETCNT=1,60   (Set COUNT1 value to 60)**
394 394  )))
395 -)))
396 396  
397 397  (% class="box infomessage" %)
398 398  (((
399 -(((
400 400  **AT+SETCNT=2,60   (Set COUNT2 value to 60)**
401 401  )))
402 -)))
403 403  
404 404  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
405 405  
... ... @@ -417,31 +417,21 @@
417 417  * FIRST: Indicate this is the first packet after join network.
418 418  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
419 419  
420 -(((
421 421  (% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
422 -)))
423 423  
424 -(((
425 425  **To use counting mode, please run:**
426 -)))
427 427  
428 428  (% class="box infomessage" %)
429 429  (((
430 -(((
431 431  **AT+MOD=3**
432 432  )))
433 -)))
434 434  
435 435  (% class="box infomessage" %)
436 436  (((
437 -(((
438 438  **ATZ**
439 439  )))
440 -)))
441 441  
442 -(((
443 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
444 -)))
330 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
445 445  
446 446  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
447 447  
... ... @@ -461,67 +461,44 @@
461 461  * FIRST: Indicate this is the first packet after join network.
462 462  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
463 463  
464 -(((
465 465  (% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
466 -)))
467 467  
468 -(((
469 469  **To use this mode, please run:**
470 -)))
471 471  
472 472  (% class="box infomessage" %)
473 473  (((
474 -(((
475 475  **AT+MOD=4**
476 476  )))
477 -)))
478 478  
479 479  (% class="box infomessage" %)
480 480  (((
481 -(((
482 482  **ATZ**
483 483  )))
484 -)))
485 485  
486 -(((
487 -
488 -)))
489 489  
490 -(((
491 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
492 -)))
365 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
493 493  
494 -(((
495 495  **Plus below command for AVI1 Counting:**
496 -)))
497 497  
498 498  (% class="box infomessage" %)
499 499  (((
500 -(((
501 501  **AT+SETCNT=3,60   (set AVI Count to 60)**
502 502  )))
503 -)))
504 504  
505 505  (% class="box infomessage" %)
506 506  (((
507 -(((
508 508  **AT+VOLMAX=20000   (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
509 509  )))
510 -)))
511 511  
512 512  (% class="box infomessage" %)
513 513  (((
514 -(((
515 515  **AT+VOLMAX=20000,0   (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
516 516  )))
517 -)))
518 518  
519 519  (% class="box infomessage" %)
520 520  (((
521 -(((
522 522  **AT+VOLMAX=20000,1   (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
523 523  )))
524 -)))
525 525  
526 526  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
527 527  
... ... @@ -535,35 +535,23 @@
535 535  
536 536  * RO is for relay. ROx=1 : close，ROx=0 always open.
537 537  * FIRST: Indicate this is the first packet after join network.
538 -* (((
539 -DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
540 -)))
401 +* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
541 541  
542 -(((
543 543  (% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
544 -)))
545 545  
546 -(((
547 547  **To use this mode, please run:**
548 -)))
549 549  
550 550  (% class="box infomessage" %)
551 551  (((
552 -(((
553 553  **AT+MOD=5**
554 554  )))
555 -)))
556 556  
557 557  (% class="box infomessage" %)
558 558  (((
559 -(((
560 560  **ATZ**
561 561  )))
562 -)))
563 563  
564 -(((
565 -Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:http://8.211.40.43/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.2AT2BMOD3D22C28DoubleDICounting29]].
566 -)))
417 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
567 567  
568 568  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
569 569  
... ... @@ -612,7 +612,7 @@
612 612  
613 613  **Downlink Command to set Trigger Condition**
614 614  
615 -Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
466 +Type Code: 0xAA. Downlink command same as AT Command [[AT+AVLIM, AT+ACLIM>>path:#AT_Trigger]]
616 616  
617 617  Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
618 618  
... ... @@ -632,7 +632,7 @@
632 632  
633 633  Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
634 634  
635 -**Example2**: AA 02 01 00
486 +Example2: AA 02 01 00
636 636  
637 637  Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
638 638  
... ... @@ -971,10 +971,8 @@
971 971  
972 972  (% class="box infomessage" %)
973 973  (((
974 -(((
975 975  **0xA9 aa bb cc     ~/~/ Set DO1/DO2/DO3 output with time control**
976 976  )))
977 -)))
978 978  
979 979  This is to control the digital output time of DO pin. Include four bytes:
980 980  
... ... @@ -1191,9 +1191,10 @@
1191 1191  
1192 1192  [[image:image-20220524094641-11.png||height="390" width="723"]]
1193 1193  
1043 +
1194 1194  [[image:image-20220524094641-12.png||height="402" width="718"]]
1195 1195  
1196 -**Step 3**: Create an account or log in Mydevices.
1046 +**Step **3: Create an account or log in Mydevices.
1197 1197  
1198 1198  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1199 1199  
... ... @@ -1203,6 +1203,7 @@
1203 1203  
1204 1204  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1205 1205  
1056 +
1206 1206  [[image:image-20220524094909-1.png||height="335" width="729"]]
1207 1207  
1208 1208  [[image:image-20220524094909-2.png||height="337" width="729"]]
... ... @@ -1213,6 +1213,10 @@
1213 1213  
1214 1214  [[image:image-20220524094909-5.png||height="341" width="734"]]
1215 1215  
1067 +
1068 +
1069 +
1070 +
1216 1216  == 3.6 Interface Detail ==
1217 1217  
1218 1218  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
... ... @@ -1228,10 +1228,8 @@
1228 1228  )))
1229 1229  
1230 1230  (((
1231 -(((
1232 1232  Internal circuit as below, the NEC2501 is a photocoupler, the Active current (from NEC2501 pin 1 to pin 2 is 1ma and the max current is 50mA. When there is active current pass NEC2501 pin1 to pin2. The DI will be active high
1233 1233  )))
1234 -)))
1235 1235  
1236 1236  [[image:1653357170703-587.png]]
1237 1237  
... ... @@ -1249,7 +1249,7 @@
1249 1249  
1250 1250  So when sensor active, the current between NEC2501 pin1 and pin2 is： ​​
1251 1251  
1252 -[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]** [[image:image-20220524095628-8.png]] = DI1+ / 1K.**
1105 + //IF// = DI1+ / 1K.
1253 1253  
1254 1254  If DI1+ = 12v, the //IF// = 12mA , So the LT-22222-L will be able to detect this active signal.
1255 1255  
... ... @@ -1263,9 +1263,9 @@
1263 1263  
1264 1264  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1265 1265  
1266 -[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]** [[image:image-20220524095628-8.png]]= DI1+ / 1K.**
1119 +[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]]** [[image:image-20220524095628-8.png]]= DI1+ / 1K.**
1267 1267  
1268 -If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
1121 +If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
1269 1269  
1270 1270  
1271 1271  **Example3**: Connect to a 220v high active sensor.
... ... @@ -1277,9 +1277,9 @@
1277 1277  
1278 1278  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1279 1279  
1280 - [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.**
1133 + [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.**
1281 1281  
1282 -If sensor output is 220v, the (% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1135 +If sensor output is 220v, the (% id="cke_bm_243359S" style="display:none" %) [[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1283 1283  
1284 1284  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1285 1285  
... ... @@ -1314,612 +1314,419 @@
1314 1314  
1315 1315  [[image:1653357648330-671.png||height="155" width="733"]]
1316 1316  
1317 -=== 3.6.5 Relay Output ===
1318 1318  
1319 -(((
1171 +
1172 +1.
1173 +11.
1174 +111. Relay Output
1175 +
1320 1320  The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device’s Power Line to in serial of RO1_1 and RO_2. Such as below:
1321 -)))
1322 1322  
1323 -[[image:image-20220524100215-9.png]]
1178 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1324 1324  
1325 -[[image:image-20220524100215-10.png||height="382" width="723"]]
1326 1326  
1327 -== 3.7 LEDs Indicators ==
1181 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1328 1328  
1329 -[[image:image-20220524100748-11.png]]
1330 1330  
1331 -= 4. Use AT Command =
1332 1332  
1333 -== 4.1 Access AT Command ==
1334 1334  
1335 -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.
1336 1336  
1337 -[[image:1653358238933-385.png]]
1187 +1.
1188 +11. LEDs Indicators
1338 1338  
1339 -(((
1340 -In PC, User needs to set (% style="color:#4f81bd" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**)(%%) to active it. As shown below:
1190 +(% border="1" style="background-color:#f7faff" %)
1191 +|**LEDs**|**Feature**
1192 +|**PWR**|Always on if there is power
1193 +|**SYS**|After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
1194 +|**TX**|(((
1195 +Device boot: TX blinks 5 times.
1196 +
1197 +Successful join network: TX ON for 5 seconds.
1198 +
1199 +Transmit a LoRa packet: TX blinks once
1341 1341  )))
1201 +|**RX**|RX blinks once when receive a packet.
1202 +|**DO1**|
1203 +|**DO2**|
1204 +|**DO3**|
1205 +|**DI2**|(((
1206 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1342 1342  
1343 -[[image:1653358355238-883.png]]
1208 +For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1209 +)))
1210 +|**DI2**|(((
1211 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1344 1344  
1213 +For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1214 +)))
1215 +|**DI3**|For LT-33222-L ONLY: ON when DI3 is low, LOW when DI3 is high
1216 +|**DI2**|(((
1217 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1218 +
1219 +For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1220 +)))
1221 +|**RO1**|
1222 +|**RO2**|
1223 +
1224 +1. Use AT Command
1225 +11. Access AT Command
1226 +
1227 +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.
1228 +
1229 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1230 +
1231 +
1232 +In PC, User needs to set **serial tool**(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to **9600** to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:**123456**) to active it. As shown below:
1233 +
1234 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1235 +
1236 +
1345 1345  More detail AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1346 1346  
1347 -(((
1348 1348  AT+<CMD>?        : Help on <CMD>
1349 -)))
1350 1350  
1351 -(((
1352 1352  AT+<CMD>         : Run <CMD>
1353 -)))
1354 1354  
1355 -(((
1356 1356  AT+<CMD>=<value> : Set the value
1357 -)))
1358 1358  
1359 -(((
1360 1360  AT+<CMD>=?       : Get the value
1361 -)))
1362 1362  
1363 -(((
1364 1364  ATZ: Trig a reset of the MCU
1365 -)))
1366 1366  
1367 -(((
1368 1368  AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1369 -)))
1370 1370  
1371 -(((
1372 1372  AT+DEUI: Get or Set the Device EUI
1373 -)))
1374 1374  
1375 -(((
1376 1376  AT+DADDR: Get or Set the Device Address
1377 -)))
1378 1378  
1379 -(((
1380 1380  AT+APPKEY: Get or Set the Application Key
1381 -)))
1382 1382  
1383 -(((
1384 1384  AT+NWKSKEY: Get or Set the Network Session Key
1385 -)))
1386 1386  
1387 -(((
1388 1388  AT+APPSKEY: Get or Set the Application Session Key
1389 -)))
1390 1390  
1391 -(((
1392 1392  AT+APPEUI: Get or Set the Application EUI
1393 -)))
1394 1394  
1395 -(((
1396 1396  AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1397 -)))
1398 1398  
1399 -(((
1400 1400  AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1401 -)))
1402 1402  
1403 -(((
1404 1404  AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1405 -)))
1406 1406  
1407 -(((
1408 1408  AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1409 -)))
1410 1410  
1411 -(((
1412 1412  AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1413 -)))
1414 1414  
1415 -(((
1416 1416  AT+RX2FQ: Get or Set the Rx2 window frequency
1417 -)))
1418 1418  
1419 -(((
1420 1420  AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1421 -)))
1422 1422  
1423 -(((
1424 1424  AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1425 -)))
1426 1426  
1427 -(((
1428 1428  AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1429 -)))
1430 1430  
1431 -(((
1432 1432  AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1433 -)))
1434 1434  
1435 -(((
1436 1436  AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1437 -)))
1438 1438  
1439 -(((
1440 1440  AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1441 -)))
1442 1442  
1443 -(((
1444 1444  AT+NWKID: Get or Set the Network ID
1445 -)))
1446 1446  
1447 -(((
1448 1448  AT+FCU: Get or Set the Frame Counter Uplink
1449 -)))
1450 1450  
1451 -(((
1452 1452  AT+FCD: Get or Set the Frame Counter Downlink
1453 -)))
1454 1454  
1455 -(((
1456 1456  AT+CLASS: Get or Set the Device Class
1457 -)))
1458 1458  
1459 -(((
1460 1460  AT+JOIN: Join network
1461 -)))
1462 1462  
1463 -(((
1464 1464  AT+NJS: Get OTAA Join Status
1465 -)))
1466 1466  
1467 -(((
1468 1468  AT+SENDB: Send hexadecimal data along with the application port
1469 -)))
1470 1470  
1471 -(((
1472 1472  AT+SEND: Send text data along with the application port
1473 -)))
1474 1474  
1475 -(((
1476 1476  AT+RECVB: Print last received data in binary format (with hexadecimal values)
1477 -)))
1478 1478  
1479 -(((
1480 1480  AT+RECV: Print last received data in raw format
1481 -)))
1482 1482  
1483 -(((
1484 1484  AT+VER: Get current image version and Frequency Band
1485 -)))
1486 1486  
1487 -(((
1488 1488  AT+CFM: Get or Set the confirmation mode (0-1)
1489 -)))
1490 1490  
1491 -(((
1492 1492  AT+CFS: Get confirmation status of the last AT+SEND (0-1)
1493 -)))
1494 1494  
1495 -(((
1496 1496  AT+SNR: Get the SNR of the last received packet
1497 -)))
1498 1498  
1499 -(((
1500 1500  AT+RSSI: Get the RSSI of the last received packet
1501 -)))
1502 1502  
1503 -(((
1504 1504  AT+TDC: Get or set the application data transmission interval in ms
1505 -)))
1506 1506  
1507 -(((
1508 1508  AT+PORT: Get or set the application port
1509 -)))
1510 1510  
1511 -(((
1512 1512  AT+DISAT: Disable AT commands
1513 -)))
1514 1514  
1515 -(((
1516 1516  AT+PWORD: Set password, max 9 digits
1517 -)))
1518 1518  
1519 -(((
1520 1520  AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1521 -)))
1522 1522  
1523 -(((
1524 1524  AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1525 -)))
1526 1526  
1527 -(((
1528 1528  AT+CFG: Print all settings
1529 -)))
1530 1530  
1531 -== 4.2 Common AT Command Sequence ==
1532 1532  
1533 -=== 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1534 1534  
1535 -(((
1333 +1.
1334 +11. Common AT Command Sequence
1335 +111. Multi-channel ABP mode (Use with SX1301/LG308)
1336 +
1536 1536  If device has not joined network yet:
1537 -)))
1538 1538  
1539 -(((
1540 -(% style="background-color:#dcdcdc" %)123456
1541 -)))
1339 +123456
1542 1542  
1543 -(((
1544 -(% style="background-color:#dcdcdc" %)AT+FDR
1545 -)))
1341 +AT+FDR
1546 1546  
1547 -(((
1548 -(% style="background-color:#dcdcdc" %)123456
1549 -)))
1343 +123456
1550 1550  
1551 -(((
1552 -(% style="background-color:#dcdcdc" %)AT+NJM=0
1553 -)))
1345 +AT+NJM=0
1554 1554  
1555 -(((
1556 -(% style="background-color:#dcdcdc" %)ATZ
1557 -)))
1347 +ATZ
1558 1558  
1559 1559  
1560 -(((
1561 1561  If device already joined network:
1562 -)))
1563 1563  
1564 -(((
1565 -(% style="background-color:#dcdcdc" %)AT+NJM=0
1566 -)))
1352 +AT+NJM=0
1567 1567  
1568 -(((
1569 -(% style="background-color:#dcdcdc" %)ATZ
1570 -)))
1354 +ATZ
1571 1571  
1572 -=== 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1356 +1.
1357 +11.
1358 +111. Single-channel ABP mode (Use with LG01/LG02)
1573 1573  
1574 -(((
1575 -(% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
1576 -)))
1360 +123456   Enter Password to have AT access.
1577 1577  
1578 -(((
1579 -(% style="background-color:#dcdcdc" %) AT+FDR(%%)   Reset Parameters to Factory Default, Keys Reserve
1580 -)))
1362 +AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1581 1581  
1582 -(((
1583 -(% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
1584 -)))
1364 +123456   Enter Password to have AT access.
1585 1585  
1586 -(((
1587 -(% style="background-color:#dcdcdc" %) AT+CLASS=C(%%) Set to work in CLASS C
1588 -)))
1366 +AT+CLASS=C Set to work in CLASS C
1589 1589  
1590 -(((
1591 -(% style="background-color:#dcdcdc" %) AT+NJM=0(%%) Set to ABP mode
1592 -)))
1368 +AT+NJM=0 Set to ABP mode
1593 1593  
1594 -(((
1595 -(% style="background-color:#dcdcdc" %) AT+ADR=0(%%) Set the Adaptive Data Rate Off
1596 -)))
1370 +AT+ADR=0 Set the Adaptive Data Rate Off
1597 1597  
1598 -(((
1599 -(% style="background-color:#dcdcdc" %) AT+DR=5(%%)  Set Data Rate
1600 -)))
1372 +AT+DR=5  Set Data Rate
1601 1601  
1602 -(((
1603 -(% style="background-color:#dcdcdc" %) AT+TDC=60000(%%)  Set transmit interval to 60 seconds
1604 -)))
1374 +AT+TDC=60000  Set transmit interval to 60 seconds
1605 1605  
1606 -(((
1607 -(% style="background-color:#dcdcdc" %) AT+CHS=868400000(%%) Set transmit frequency to 868.4Mhz
1608 -)))
1376 +AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1609 1609  
1610 -(((
1611 -(% style="background-color:#dcdcdc" %) AT+RX2FQ=868400000(%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1612 -)))
1378 +AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
1613 1613  
1614 -(((
1615 -(% style="background-color:#dcdcdc" %) AT+RX2DR=5(%%)  Set RX2DR to match the downlink DR from server. see below
1616 -)))
1380 +AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
1617 1617  
1618 -(((
1619 -(% 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.
1620 -)))
1382 +AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1621 1621  
1622 -(((
1623 -(% style="background-color:#dcdcdc" %) ATZ         (%%) Reset MCU
1624 -)))
1384 +ATZ          Reset MCU
1625 1625  
1626 -(((
1627 -(% style="color:red" %)**Note:**
1628 -)))
1386 +**Note:**
1629 1629  
1630 -(((
1631 -(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1632 -2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1633 -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.
1634 -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
1635 -)))
1388 +1. Make sure the device is set to ABP mode in the IoT Server.
1389 +1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1390 +1. 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.
1391 +1. 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
1636 1636  
1637 -(((
1638 -[[image:1653359097980-169.png||height="188" width="729"]]
1639 -)))
1393 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]]
1640 1640  
1641 -(((
1642 -
1643 -)))
1644 1644  
1645 -=== 4.2.3 Change to Class A ===
1396 +1.
1397 +11.
1398 +111. Change to Class A
1646 1646  
1647 1647  If sensor JOINED
1648 -(% style="background-color:#dcdcdc" %)AT+CLASS=A
1401 +
1402 +AT+CLASS=A
1403 +
1649 1649  ATZ
1650 1650  
1651 -= 5. FAQ =
1652 1652  
1653 -== 5.1 How to upgrade the image? ==
1654 1654  
1408 +
1409 +
1410 +1. FAQ
1411 +
1412 +1.
1413 +11. How to upgrade the image?
1414 +
1655 1655  The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1656 1656  
1657 1657  * Support new features
1658 1658  * For bug fix
1659 1659  * Change LoRaWAN bands.
1420 +
1660 1660  Below shows the hardware connection for how to upload an image to the LT:
1661 -* [[image:1653359603330-121.png]]
1662 1662  
1663 -(((
1423 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1424 +
1425 +
1664 1664  **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]].
1427 +
1665 1665  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1429 +
1666 1666  **Step3: **Open flashloader; choose the correct COM port to update.
1431 +
1432 +**For LT-33222-L**:
1433 +
1434 +Hold down the PRO button and then momentarily press the RST reset button and the **DO2 led** will change from OFF to ON. When **DO2 LED** is on, it means the device is in download mode.
1435 +
1667 1667  **For LT-22222-L**:
1437 +
1668 1668  Hold down the PRO button and then momentarily press the RST reset button and the **DO1 led** will change from OFF to ON. When **DO1 LED** is on, it means the device is in download mode.
1439 +
1440 +
1441 +
1442 +|(((
1443 +Board detected
1669 1669  )))
1670 1670  
1671 - [[image:image-20220524103407-12.png]]
1446 +|(((
1447 +
1448 +)))
1672 1672  
1673 -[[image:image-20220524103429-13.png]]
1450 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image032.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image033.png]]
1674 1674  
1675 -[[image:image-20220524104033-15.png]]
1676 1676  
1677 -(% style="color:red" %)**Notice**(%%): In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1678 1678  
1679 -[[image:1653360054704-518.png||height="186" width="745"]]
1454 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image034.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]]
1680 1680  
1681 -(((
1682 -(((
1683 -== 5.2 How to change the LoRa Frequency Bands/Region? ==
1684 -)))
1685 -)))
1686 1686  
1687 -(((
1688 -User can follow the introduction for [[how to upgrade image>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H5.1Howtoupgradetheimage3F]]. When download the images, choose the required image file for download.
1689 -)))
1457 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image037.png]]
1690 1690  
1691 -(((
1692 -== 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
1693 -)))
1694 1694  
1695 -(((
1696 -(((
1460 +**Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1461 +
1462 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image038.png]]
1463 +
1464 +
1465 +1.
1466 +11. How to change the LoRa Frequency Bands/Region?
1467 +
1468 +User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1469 +
1470 +
1471 +1.
1472 +11. How to set up LT to work with Single Channel Gateway such as LG01/LG02?
1473 +
1697 1697  In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
1698 -)))
1699 -)))
1700 1700  
1701 -(((
1702 -(((
1703 1703  Assume we have a LG02 working in the frequency 868400000 now , below is the step.
1704 -)))
1705 -)))
1706 1706  
1707 -(((
1708 -(% style="color:#4f81bd" %)**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.
1709 -)))
1710 1710  
1711 -(((
1712 -[[image:1653360231087-571.png||height="401" width="727"]]
1713 -)))
1479 +**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.
1714 1714  
1715 -(((
1716 -(% style="color:red" %)Note: user just need to make sure above three keys match, User can change either in TTN or Device to make then match. In TTN, NETSKEY and APPSKEY can be configured by user in setting page, but Device Addr is generated by TTN.
1717 -)))
1481 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image039.png]]
1718 1718  
1719 -(((
1720 -(% style="color:#4f81bd" %)**Step2**(%%)**: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
1721 -)))
1483 +Note: user just need to make sure above three keys match, User can change either in TTN or Device to make then match. In TTN, NETSKEY and APPSKEY can be configured by user in setting page, but Device Addr is generated by TTN.
1722 1722  
1723 -(((
1724 -(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access.
1725 -(% style="background-color:#dcdcdc" %)AT+FDR  (%%) Reset Parameters to Factory Default, Keys Reserve
1726 -(% style="background-color:#dcdcdc" %)123456  (%%) Enter Password to have AT access.
1727 -(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%)Set to ABP mode
1728 -(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%)Set the Adaptive Data Rate Off
1729 -(% style="background-color:#dcdcdc" %)AT+DR=5 (%%) Set Data Rate (Set AT+DR=3 for 915 band)
1730 -(% style="background-color:#dcdcdc" %)AT+TDC=60000  (%%)Set transmit interval to 60 seconds
1731 -(% style="background-color:#dcdcdc" %)AT+CHS=868400000 (%%)Set transmit frequency to 868.4Mhz
1732 -(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%) Set Device Address to 26 01 1A F1
1733 -(% style="background-color:#dcdcdc" %)ATZ                (%%)Reset MCU
1734 -)))
1735 1735  
1736 -(((
1486 +**Step2: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
1487 +
1488 +123456   Enter Password to have AT access.
1489 +
1490 +AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1491 +
1492 +123456   Enter Password to have AT access.
1493 +
1494 +AT+NJM=0 Set to ABP mode
1495 +
1496 +AT+ADR=0 Set the Adaptive Data Rate Off
1497 +
1498 +AT+DR=5  Set Data Rate (Set AT+DR=3 for 915 band)
1499 +
1500 +AT+TDC=60000  Set transmit interval to 60 seconds
1501 +
1502 +AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1503 +
1504 +AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1
1505 +
1506 +ATZ                Reset MCU
1507 +
1737 1737  As shown in below:
1738 -)))
1739 1739  
1740 -[[image:1653360498588-932.png||height="485" width="726"]]
1510 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image040.png]]
1741 1741  
1742 -== 5.4 Can I see counting event in Serial? ==
1743 1743  
1744 -(((
1513 +
1514 +1.
1515 +11. Can I see counting event in Serial?
1516 +
1745 1745  User can run AT+DEBUG command to see the counting event in serial. If firmware too old and doesn’t support AT+DEBUG. User can update to latest firmware first.
1746 -)))
1747 1747  
1748 -(((
1749 -= 6. Trouble Shooting =
1750 -)))
1751 1751  
1752 -(((
1753 -(((
1754 -== 6.1 Downlink doesn’t work, how to solve it? ==
1755 -)))
1756 -)))
1757 1757  
1758 -(((
1759 -Please see this link for how to debug:
1760 1760  
1761 -[[http:~~/~~/8.211.40.43:8080/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/>>http://8.211.40.43:8080/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/]]
1762 -)))
1522 +1. Trouble Shooting     
1523 +11. Downlink doesn’t work, how to solve it?
1763 1763  
1764 -(((
1525 +Please see this link for how to debug:
1526 +
1765 1765  [[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work]]
1766 -)))
1767 1767  
1768 -(((
1769 -== 6.2 Have trouble to upload image. ==
1770 -)))
1771 1771  
1772 -(((
1530 +1.
1531 +11. Have trouble to upload image.
1532 +
1773 1773  See this link for trouble shooting:
1774 -)))
1775 1775  
1776 -(((
1777 1777  [[http:~~/~~/wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting>>url:http://wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting]]
1778 -)))
1779 1779  
1780 -(((
1781 -== 6.3 Why I can’t join TTN in US915 /AU915 bands? ==
1782 -)))
1783 1783  
1784 -(((
1538 +1.
1539 +11. Why I can’t join TTN in US915 /AU915 bands?
1540 +
1785 1785  It might be about the channels mapping. Please see this link for detail:
1786 -)))
1787 1787  
1788 -(((
1789 1789  [[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band]]
1790 -)))
1791 1791  
1792 -(((
1793 -= 7. Order Info =
1794 -)))
1795 1795  
1796 -(((
1797 -(((
1798 -(% style="color:#4f81bd" %)**LT-22222-L-XXX:**
1799 -)))
1800 -)))
1801 1801  
1802 -(((
1803 -(((
1804 -(% style="color:#4f81bd" %)**XXX:**
1805 -)))
1806 -)))
1807 1807  
1808 -(((
1809 -* (((
1810 -(% style="color:#4f81bd" %)**EU433**(%%): LT with frequency bands EU433
1811 -)))
1812 -)))
1548 +1. Order Info
1813 1813  
1814 -(((
1815 -* (((
1816 -(% style="color:#4f81bd" %)**EU868**(%%): LT with frequency bands EU868
1817 -)))
1818 -)))
1550 +**For LT-33222-L-XXX or LT-22222-L-XXX:**
1819 1819  
1820 -(((
1821 -* (((
1822 -(% style="color:#4f81bd" %)**KR920**(%%): LT with frequency bands KR920
1823 -)))
1824 -)))
1552 +**XXX:**
1825 1825  
1826 -(((
1827 -* (((
1828 -(% style="color:#4f81bd" %)**CN470**(%%): LT with frequency bands CN470
1829 -)))
1830 -)))
1554 +* **EU433**: LT with frequency bands EU433
1555 +* **EU868**: LT with frequency bands EU868
1556 +* **KR920**: LT with frequency bands KR920
1557 +* **CN470**: LT with frequency bands CN470
1558 +* **AS923**: LT with frequency bands AS923
1559 +* **AU915**: LT with frequency bands AU915
1560 +* **US915**: LT with frequency bands US915
1561 +* **IN865**: LT with frequency bands IN865
1562 +* **CN779**: LT with frequency bands CN779
1831 1831  
1832 -(((
1833 -* (((
1834 -(% style="color:#4f81bd" %)**AS923**(%%): LT with frequency bands AS923
1835 -)))
1836 -)))
1564 +1. Packing Info
1837 1837  
1838 -(((
1839 -* (((
1840 -(% style="color:#4f81bd" %)**AU915**(%%): LT with frequency bands AU915
1841 -)))
1842 -)))
1843 -
1844 -(((
1845 -* (((
1846 -(% style="color:#4f81bd" %)**US915**(%%): LT with frequency bands US915
1847 -)))
1848 -)))
1849 -
1850 -(((
1851 -* (((
1852 -(% style="color:#4f81bd" %)**IN865**(%%): LT with frequency bands IN865
1853 -)))
1854 -)))
1855 -
1856 -(((
1857 -* (((
1858 -(% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779
1859 -)))
1860 -
1861 -= 8. Packing Info =
1862 -)))
1863 -
1864 -(((
1865 -(((
1866 1866  **Package Includes**:
1867 -)))
1868 -)))
1869 1869  
1870 -(((
1871 -(((
1872 -* LT-22222-L I/O Controller x 1
1568 +* LT I/O Controller x 1
1873 1873  * Stick Antenna for LoRa RF part x 1
1874 1874  * Bracket for controller x1
1875 1875  * Program cable x 1
1876 -)))
1877 -)))
1878 1878  
1879 -(((
1880 -(((
1881 1881  **Dimension and weight**:
1882 -)))
1883 -)))
1884 1884  
1885 -(((
1886 -(((
1887 1887  * Device Size: 13.5 x 7 x 3 cm
1888 1888  * Device Weight: 105g
1889 1889  * Package Size / pcs : 14.5 x 8 x 5 cm
1890 1890  * Weight / pcs : 170g
1891 -)))
1892 -)))
1893 1893  
1894 -(((
1895 -= 9. Support =
1896 -)))
1580 +1. Support
1897 1897  
1898 -* (((
1899 -(((
1900 -Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1901 -)))
1902 -)))
1903 -* (((
1904 -(((
1905 -Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to
1906 -)))
1907 -)))
1582 +* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1583 +* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to
1908 1908  
1909 -(((
1910 -(((
1911 - [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
1912 -)))
1913 -
1914 -(((
1915 -= 10. Reference​​​​​ =
1916 -
1917 -* Product Page:
1918 -
1919 -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]]
1920 -
1921 -* [[Image Download>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]
1922 -* [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1923 -* [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
1924 -)))
1925 -)))
1585 +[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
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