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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 66.29
edited by Xiaoling
on 2022/05/24 14:12
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To version 58.1
edited by Xiaoling
on 2022/05/24 10:24
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Summary

Details

Page properties
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
... ... @@ -199,22 +199,17 @@
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 -== 3.2 Example to join LoRaWAN network ==
136 +3.2 Example to join LoRaWAN network
211 211  
212 -(((
213 213  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. 
214 -)))
215 215  
216 216  [[image:image-20220523172350-1.png||height="266" width="864"]]
217 217  
142 +
218 218  (((
219 219  The LG308 is already set to connect to [[TTN network >>url:https://www.thethingsnetwork.org/]]. So what we need to do now is only configure register this device to TTN:
220 220  )))
... ... @@ -310,9 +310,7 @@
310 310  
311 311  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
312 312  
313 -(((
314 314  Total : 11 bytes payload
315 -)))
316 316  
317 317  [[image:image-20220523180452-3.png]]
318 318  
... ... @@ -326,77 +326,53 @@
326 326  * FIRST: Indicate this is the first packet after join network.
327 327  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
328 328  
329 -(((
330 330  (% style="color:red" %)Note: DO3 bit is not valid for LT-22222-L.
331 -)))
332 332  
333 -(((
334 334  **To use counting mode, please run:**
335 -)))
336 336  
337 337  (% class="box infomessage" %)
338 338  (((
339 -(((
340 340  **AT+MOD=2**
341 341  )))
342 -)))
343 343  
344 344  (% class="box infomessage" %)
345 345  (((
346 -(((
347 347  **ATZ**
348 348  )))
349 -)))
350 350  
351 -(((
352 352  (% style="color:#4f81bd" %)**AT Commands for counting:**
353 -)))
354 354  
355 -(((
356 356  **For LT22222-L:**
357 -)))
358 358  
359 359  (% class="box infomessage" %)
360 360  (((
361 -(((
362 362  **AT+TRIG1=0,100 (set DI1 port to trigger on low level, valid signal is 100ms) **
363 363  )))
364 -)))
365 365  
366 366  (% class="box infomessage" %)
367 367  (((
368 -(((
369 369  **AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms ) **
370 370  )))
371 -)))
372 372  
373 373  (% class="box infomessage" %)
374 374  (((
375 -(((
376 376  **AT+TRIG2=0,100 (set DI2 port to trigger on low level, valid signal is 100ms) **
377 377  )))
378 -)))
379 379  
380 380  (% class="box infomessage" %)
381 381  (((
382 -(((
383 383  **AT+TRIG2=1,100 (set DI2 port to trigger on high level, valid signal is 100ms ) **
384 384  )))
385 -)))
386 386  
387 387  (% class="box infomessage" %)
388 388  (((
389 -(((
390 390  **AT+SETCNT=1,60   (Set COUNT1 value to 60)**
391 391  )))
392 -)))
393 393  
394 394  (% class="box infomessage" %)
395 395  (((
396 -(((
397 397  **AT+SETCNT=2,60   (Set COUNT2 value to 60)**
398 398  )))
399 -)))
400 400  
401 401  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
402 402  
... ... @@ -414,31 +414,21 @@
414 414  * FIRST: Indicate this is the first packet after join network.
415 415  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
416 416  
417 -(((
418 418  (% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
419 -)))
420 420  
421 -(((
422 422  **To use counting mode, please run:**
423 -)))
424 424  
425 425  (% class="box infomessage" %)
426 426  (((
427 -(((
428 428  **AT+MOD=3**
429 429  )))
430 -)))
431 431  
432 432  (% class="box infomessage" %)
433 433  (((
434 -(((
435 435  **ATZ**
436 436  )))
437 -)))
438 438  
439 -(((
440 -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]].
441 -)))
330 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
442 442  
443 443  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
444 444  
... ... @@ -458,67 +458,44 @@
458 458  * FIRST: Indicate this is the first packet after join network.
459 459  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
460 460  
461 -(((
462 462  (% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
463 -)))
464 464  
465 -(((
466 466  **To use this mode, please run:**
467 -)))
468 468  
469 469  (% class="box infomessage" %)
470 470  (((
471 -(((
472 472  **AT+MOD=4**
473 473  )))
474 -)))
475 475  
476 476  (% class="box infomessage" %)
477 477  (((
478 -(((
479 479  **ATZ**
480 480  )))
481 -)))
482 482  
483 -(((
484 -
485 -)))
486 486  
487 -(((
488 -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]].
489 -)))
365 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
490 490  
491 -(((
492 492  **Plus below command for AVI1 Counting:**
493 -)))
494 494  
495 495  (% class="box infomessage" %)
496 496  (((
497 -(((
498 498  **AT+SETCNT=3,60   (set AVI Count to 60)**
499 499  )))
500 -)))
501 501  
502 502  (% class="box infomessage" %)
503 503  (((
504 -(((
505 505  **AT+VOLMAX=20000   (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
506 506  )))
507 -)))
508 508  
509 509  (% class="box infomessage" %)
510 510  (((
511 -(((
512 512  **AT+VOLMAX=20000,0   (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
513 513  )))
514 -)))
515 515  
516 516  (% class="box infomessage" %)
517 517  (((
518 -(((
519 519  **AT+VOLMAX=20000,1   (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
520 520  )))
521 -)))
522 522  
523 523  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
524 524  
... ... @@ -532,35 +532,23 @@
532 532  
533 533  * RO is for relay. ROx=1 : close，ROx=0 always open.
534 534  * FIRST: Indicate this is the first packet after join network.
535 -* (((
536 -DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
537 -)))
401 +* DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
538 538  
539 -(((
540 540  (% style="color:red" %)Note: DO3 is not valid for LT-22222-L.
541 -)))
542 542  
543 -(((
544 544  **To use this mode, please run:**
545 -)))
546 546  
547 547  (% class="box infomessage" %)
548 548  (((
549 -(((
550 550  **AT+MOD=5**
551 551  )))
552 -)))
553 553  
554 554  (% class="box infomessage" %)
555 555  (((
556 -(((
557 557  **ATZ**
558 558  )))
559 -)))
560 560  
561 -(((
562 -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]].
563 -)))
417 +Other AT Commands for counting are similar to [[MOD2 Counting Command>>path:#COUNT_COMMAND]].
564 564  
565 565  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
566 566  
... ... @@ -609,7 +609,7 @@
609 609  
610 610  **Downlink Command to set Trigger Condition**
611 611  
612 -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]]
613 613  
614 614  Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
615 615  
... ... @@ -629,7 +629,7 @@
629 629  
630 630  Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
631 631  
632 -**Example2**: AA 02 01 00
486 +Example2: AA 02 01 00
633 633  
634 634  Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
635 635  
... ... @@ -968,10 +968,8 @@
968 968  
969 969  (% class="box infomessage" %)
970 970  (((
971 -(((
972 972  **0xA9 aa bb cc     ~/~/ Set DO1/DO2/DO3 output with time control**
973 973  )))
974 -)))
975 975  
976 976  This is to control the digital output time of DO pin. Include four bytes:
977 977  
... ... @@ -1188,9 +1188,10 @@
1188 1188  
1189 1189  [[image:image-20220524094641-11.png||height="390" width="723"]]
1190 1190  
1043 +
1191 1191  [[image:image-20220524094641-12.png||height="402" width="718"]]
1192 1192  
1193 -**Step 3**: Create an account or log in Mydevices.
1046 +**Step **3: Create an account or log in Mydevices.
1194 1194  
1195 1195  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1196 1196  
... ... @@ -1200,6 +1200,7 @@
1200 1200  
1201 1201  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1202 1202  
1056 +
1203 1203  [[image:image-20220524094909-1.png||height="335" width="729"]]
1204 1204  
1205 1205  [[image:image-20220524094909-2.png||height="337" width="729"]]
... ... @@ -1210,6 +1210,10 @@
1210 1210  
1211 1211  [[image:image-20220524094909-5.png||height="341" width="734"]]
1212 1212  
1067 +
1068 +
1069 +
1070 +
1213 1213  == 3.6 Interface Detail ==
1214 1214  
1215 1215  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
... ... @@ -1225,10 +1225,8 @@
1225 1225  )))
1226 1226  
1227 1227  (((
1228 -(((
1229 1229  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
1230 1230  )))
1231 -)))
1232 1232  
1233 1233  [[image:1653357170703-587.png]]
1234 1234  
... ... @@ -1246,7 +1246,7 @@
1246 1246  
1247 1247  So when sensor active, the current between NEC2501 pin1 and pin2 is： ​​
1248 1248  
1249 -[[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.
1250 1250  
1251 1251  If DI1+ = 12v, the //IF// = 12mA , So the LT-22222-L will be able to detect this active signal.
1252 1252  
... ... @@ -1260,9 +1260,9 @@
1260 1260  
1261 1261  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1262 1262  
1263 -[[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:/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:/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.**
1264 1264  
1265 -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:/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:/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.
1266 1266  
1267 1267  
1268 1268  **Example3**: Connect to a 220v high active sensor.
... ... @@ -1274,7 +1274,7 @@
1274 1274  
1275 1275  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1276 1276  
1277 - [[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:/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:/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.**
1278 1278  
1279 1279  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.
1280 1280  
... ... @@ -1333,9 +1333,7 @@
1333 1333  
1334 1334  [[image:1653358238933-385.png]]
1335 1335  
1336 -(((
1337 1337  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:
1338 -)))
1339 1339  
1340 1340  [[image:1653358355238-883.png]]
1341 1341  
... ... @@ -1529,394 +1529,250 @@
1529 1529  
1530 1530  === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1531 1531  
1532 -(((
1533 1533  If device has not joined network yet:
1534 -)))
1535 1535  
1536 -(((
1537 1537  (% style="background-color:#dcdcdc" %)123456
1538 -)))
1539 1539  
1540 -(((
1541 1541  (% style="background-color:#dcdcdc" %)AT+FDR
1542 -)))
1543 1543  
1544 -(((
1545 1545  (% style="background-color:#dcdcdc" %)123456
1546 -)))
1547 1547  
1548 -(((
1549 1549  (% style="background-color:#dcdcdc" %)AT+NJM=0
1550 -)))
1551 1551  
1552 -(((
1553 1553  (% style="background-color:#dcdcdc" %)ATZ
1554 -)))
1555 1555  
1556 1556  
1557 -(((
1558 1558  If device already joined network:
1559 -)))
1560 1560  
1561 -(((
1562 1562  (% style="background-color:#dcdcdc" %)AT+NJM=0
1563 -)))
1564 1564  
1565 -(((
1566 1566  (% style="background-color:#dcdcdc" %)ATZ
1567 -)))
1568 1568  
1569 1569  === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1570 1570  
1571 -(((
1572 1572  (% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
1573 -)))
1574 1574  
1575 -(((
1576 1576  (% style="background-color:#dcdcdc" %) AT+FDR(%%)   Reset Parameters to Factory Default, Keys Reserve
1577 -)))
1578 1578  
1579 -(((
1580 1580  (% style="background-color:#dcdcdc" %) 123456(%%)   Enter Password to have AT access.
1581 -)))
1582 1582  
1583 -(((
1584 1584  (% style="background-color:#dcdcdc" %) AT+CLASS=C(%%) Set to work in CLASS C
1585 -)))
1586 1586  
1587 -(((
1588 1588  (% style="background-color:#dcdcdc" %) AT+NJM=0(%%) Set to ABP mode
1589 -)))
1590 1590  
1591 -(((
1592 1592  (% style="background-color:#dcdcdc" %) AT+ADR=0(%%) Set the Adaptive Data Rate Off
1593 -)))
1594 1594  
1595 -(((
1596 1596  (% style="background-color:#dcdcdc" %) AT+DR=5(%%)  Set Data Rate
1597 -)))
1598 1598  
1599 -(((
1600 1600  (% style="background-color:#dcdcdc" %) AT+TDC=60000(%%)  Set transmit interval to 60 seconds
1601 -)))
1602 1602  
1603 -(((
1604 1604  (% style="background-color:#dcdcdc" %) AT+CHS=868400000(%%) Set transmit frequency to 868.4Mhz
1605 -)))
1606 1606  
1607 -(((
1608 1608  (% style="background-color:#dcdcdc" %) AT+RX2FQ=868400000(%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1609 -)))
1610 1610  
1611 -(((
1612 1612  (% style="background-color:#dcdcdc" %) AT+RX2DR=5(%%)  Set RX2DR to match the downlink DR from server. see below
1613 -)))
1614 1614  
1615 -(((
1616 1616  (% 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.
1617 -)))
1618 1618  
1619 -(((
1620 1620  (% style="background-color:#dcdcdc" %) ATZ         (%%) Reset MCU
1621 -)))
1622 1622  
1623 -(((
1624 1624  (% style="color:red" %)**Note:**
1625 -)))
1626 1626  
1627 -(((
1628 1628  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1629 1629  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1630 1630  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.
1631 1631  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
1632 -)))
1633 1633  
1634 -(((
1635 -[[image:1653359097980-169.png||height="188" width="729"]]
1636 -)))
1440 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]]
1637 1637  
1638 -(((
1639 -
1640 -)))
1641 1641  
1642 -=== 4.2.3 Change to Class A ===
1443 +1.
1444 +11.
1445 +111. Change to Class A
1643 1643  
1644 1644  If sensor JOINED
1645 -(% style="background-color:#dcdcdc" %)AT+CLASS=A
1448 +
1449 +AT+CLASS=A
1450 +
1646 1646  ATZ
1647 1647  
1648 -= 5. FAQ =
1649 1649  
1650 -== 5.1 How to upgrade the image? ==
1651 1651  
1455 +
1456 +
1457 +1. FAQ
1458 +
1459 +1.
1460 +11. How to upgrade the image?
1461 +
1652 1652  The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1653 1653  
1654 1654  * Support new features
1655 1655  * For bug fix
1656 1656  * Change LoRaWAN bands.
1467 +
1657 1657  Below shows the hardware connection for how to upload an image to the LT:
1658 -* [[image:1653359603330-121.png]]
1659 1659  
1660 -(((
1470 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1471 +
1472 +
1661 1661  **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]].
1474 +
1662 1662  **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1476 +
1663 1663  **Step3: **Open flashloader; choose the correct COM port to update.
1478 +
1479 +**For LT-33222-L**:
1480 +
1481 +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.
1482 +
1664 1664  **For LT-22222-L**:
1484 +
1665 1665  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.
1486 +
1487 +
1488 +
1489 +|(((
1490 +Board detected
1666 1666  )))
1667 1667  
1668 - [[image:image-20220524103407-12.png]]
1493 +|(((
1494 +
1495 +)))
1669 1669  
1670 -[[image:image-20220524103429-13.png]]
1497 +[[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]]
1671 1671  
1672 -[[image:image-20220524104033-15.png]]
1673 1673  
1674 -(% 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:
1675 1675  
1676 -[[image:1653360054704-518.png||height="186" width="745"]]
1501 +[[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]]
1677 1677  
1678 -(((
1679 -(((
1680 -== 5.2 How to change the LoRa Frequency Bands/Region? ==
1681 -)))
1682 -)))
1683 1683  
1684 -(((
1685 -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.
1686 -)))
1504 +[[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]]
1687 1687  
1688 -(((
1689 -== 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
1690 -)))
1691 1691  
1692 -(((
1693 -(((
1507 +**Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1508 +
1509 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image038.png]]
1510 +
1511 +
1512 +1.
1513 +11. How to change the LoRa Frequency Bands/Region?
1514 +
1515 +User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1516 +
1517 +
1518 +1.
1519 +11. How to set up LT to work with Single Channel Gateway such as LG01/LG02?
1520 +
1694 1694  In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
1695 -)))
1696 -)))
1697 1697  
1698 -(((
1699 -(((
1700 1700  Assume we have a LG02 working in the frequency 868400000 now , below is the step.
1701 -)))
1702 -)))
1703 1703  
1704 -(((
1705 -(% 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.
1706 -)))
1707 1707  
1708 -(((
1709 -[[image:1653360231087-571.png||height="401" width="727"]]
1710 -)))
1526 +**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.
1711 1711  
1712 -(((
1713 -(% 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.
1714 -)))
1528 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image039.png]]
1715 1715  
1716 -(((
1717 -(% style="color:#4f81bd" %)**Step2**(%%)**: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
1718 -)))
1530 +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.
1719 1719  
1720 -(((
1721 -(% style="background-color:#dcdcdc" %)123456 (%%) Enter Password to have AT access.
1722 -(% style="background-color:#dcdcdc" %)AT+FDR  (%%) Reset Parameters to Factory Default, Keys Reserve
1723 -(% style="background-color:#dcdcdc" %)123456  (%%) Enter Password to have AT access.
1724 -(% style="background-color:#dcdcdc" %)AT+NJM=0 (%%)Set to ABP mode
1725 -(% style="background-color:#dcdcdc" %)AT+ADR=0 (%%)Set the Adaptive Data Rate Off
1726 -(% style="background-color:#dcdcdc" %)AT+DR=5 (%%) Set Data Rate (Set AT+DR=3 for 915 band)
1727 -(% style="background-color:#dcdcdc" %)AT+TDC=60000  (%%)Set transmit interval to 60 seconds
1728 -(% style="background-color:#dcdcdc" %)AT+CHS=868400000 (%%)Set transmit frequency to 868.4Mhz
1729 -(% style="background-color:#dcdcdc" %)AT+DADDR=26 01 1A F1(%%) Set Device Address to 26 01 1A F1
1730 -(% style="background-color:#dcdcdc" %)ATZ                (%%)Reset MCU
1731 -)))
1732 1732  
1733 -(((
1533 +**Step2: **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
1534 +
1535 +123456   Enter Password to have AT access.
1536 +
1537 +AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1538 +
1539 +123456   Enter Password to have AT access.
1540 +
1541 +AT+NJM=0 Set to ABP mode
1542 +
1543 +AT+ADR=0 Set the Adaptive Data Rate Off
1544 +
1545 +AT+DR=5  Set Data Rate (Set AT+DR=3 for 915 band)
1546 +
1547 +AT+TDC=60000  Set transmit interval to 60 seconds
1548 +
1549 +AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1550 +
1551 +AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1
1552 +
1553 +ATZ                Reset MCU
1554 +
1734 1734  As shown in below:
1735 -)))
1736 1736  
1737 -[[image:1653360498588-932.png||height="485" width="726"]]
1557 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image040.png]]
1738 1738  
1739 -== 5.4 Can I see counting event in Serial? ==
1740 1740  
1741 -(((
1560 +
1561 +1.
1562 +11. Can I see counting event in Serial?
1563 +
1742 1742  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.
1743 -)))
1744 1744  
1745 -(((
1746 -= 6. Trouble Shooting =
1747 -)))
1748 1748  
1749 -(((
1750 -(((
1751 -== 6.1 Downlink doesn’t work, how to solve it? ==
1752 -)))
1753 -)))
1754 1754  
1755 -(((
1756 -Please see this link for how to debug:
1757 1757  
1758 -[[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/]]
1759 -)))
1569 +1. Trouble Shooting     
1570 +11. Downlink doesn’t work, how to solve it?
1760 1760  
1761 -(((
1572 +Please see this link for how to debug:
1573 +
1762 1762  [[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]]
1763 -)))
1764 1764  
1765 -(((
1766 -== 6.2 Have trouble to upload image. ==
1767 -)))
1768 1768  
1769 -(((
1577 +1.
1578 +11. Have trouble to upload image.
1579 +
1770 1770  See this link for trouble shooting:
1771 -)))
1772 1772  
1773 -(((
1774 1774  [[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]]
1775 -)))
1776 1776  
1777 -(((
1778 -== 6.3 Why I can’t join TTN in US915 /AU915 bands? ==
1779 -)))
1780 1780  
1781 -(((
1585 +1.
1586 +11. Why I can’t join TTN in US915 /AU915 bands?
1587 +
1782 1782  It might be about the channels mapping. Please see this link for detail:
1783 -)))
1784 1784  
1785 -(((
1786 1786  [[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]]
1787 -)))
1788 1788  
1789 -(((
1790 -= 7. Order Info =
1791 -)))
1792 1792  
1793 -(((
1794 -(((
1795 -(% style="color:#4f81bd" %)**LT-22222-L-XXX:**
1796 -)))
1797 -)))
1798 1798  
1799 -(((
1800 -(((
1801 -(% style="color:#4f81bd" %)**XXX:**
1802 -)))
1803 -)))
1804 1804  
1805 -(((
1806 -* (((
1807 -(% style="color:#4f81bd" %)**EU433**(%%): LT with frequency bands EU433
1808 -)))
1809 -)))
1595 +1. Order Info
1810 1810  
1811 -(((
1812 -* (((
1813 -(% style="color:#4f81bd" %)**EU868**(%%): LT with frequency bands EU868
1814 -)))
1815 -)))
1597 +**For LT-33222-L-XXX or LT-22222-L-XXX:**
1816 1816  
1817 -(((
1818 -* (((
1819 -(% style="color:#4f81bd" %)**KR920**(%%): LT with frequency bands KR920
1820 -)))
1821 -)))
1599 +**XXX:**
1822 1822  
1823 -(((
1824 -* (((
1825 -(% style="color:#4f81bd" %)**CN470**(%%): LT with frequency bands CN470
1826 -)))
1827 -)))
1601 +* **EU433**: LT with frequency bands EU433
1602 +* **EU868**: LT with frequency bands EU868
1603 +* **KR920**: LT with frequency bands KR920
1604 +* **CN470**: LT with frequency bands CN470
1605 +* **AS923**: LT with frequency bands AS923
1606 +* **AU915**: LT with frequency bands AU915
1607 +* **US915**: LT with frequency bands US915
1608 +* **IN865**: LT with frequency bands IN865
1609 +* **CN779**: LT with frequency bands CN779
1828 1828  
1829 -(((
1830 -* (((
1831 -(% style="color:#4f81bd" %)**AS923**(%%): LT with frequency bands AS923
1832 -)))
1833 -)))
1611 +1. Packing Info
1834 1834  
1835 -(((
1836 -* (((
1837 -(% style="color:#4f81bd" %)**AU915**(%%): LT with frequency bands AU915
1838 -)))
1839 -)))
1840 -
1841 -(((
1842 -* (((
1843 -(% style="color:#4f81bd" %)**US915**(%%): LT with frequency bands US915
1844 -)))
1845 -)))
1846 -
1847 -(((
1848 -* (((
1849 -(% style="color:#4f81bd" %)**IN865**(%%): LT with frequency bands IN865
1850 -)))
1851 -)))
1852 -
1853 -(((
1854 -* (((
1855 -(% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779
1856 -)))
1857 -
1858 -= 8. Packing Info =
1859 -)))
1860 -
1861 -(((
1862 -(((
1863 1863  **Package Includes**:
1864 -)))
1865 -)))
1866 1866  
1867 -(((
1868 -(((
1869 -* LT-22222-L I/O Controller x 1
1615 +* LT I/O Controller x 1
1870 1870  * Stick Antenna for LoRa RF part x 1
1871 1871  * Bracket for controller x1
1872 1872  * Program cable x 1
1873 -)))
1874 -)))
1875 1875  
1876 -(((
1877 -(((
1878 1878  **Dimension and weight**:
1879 -)))
1880 -)))
1881 1881  
1882 -(((
1883 -(((
1884 1884  * Device Size: 13.5 x 7 x 3 cm
1885 1885  * Device Weight: 105g
1886 1886  * Package Size / pcs : 14.5 x 8 x 5 cm
1887 1887  * Weight / pcs : 170g
1888 -)))
1889 -)))
1890 1890  
1891 -(((
1892 -= 9. Support =
1893 -)))
1627 +1. Support
1894 1894  
1895 -* (((
1896 -(((
1897 -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.
1898 -)))
1899 -)))
1900 -* (((
1901 -(((
1902 -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
1903 -)))
1904 -)))
1629 +* 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.
1630 +* 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
1905 1905  
1906 -(((
1907 -(((
1908 - [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
1909 -)))
1910 -
1911 -(((
1912 -= 10. Reference​​​​​ =
1913 -
1914 -* Product Page:
1915 -
1916 -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]]
1917 -
1918 -* [[Image Download>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]]
1919 -* [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1920 -* [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
1921 -)))
1922 -)))
1632 +[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
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