Version 117.2 by Xiaoling on 2023/04/26 17:51
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1 (% style="text-align:center" %)
2 [[image:image-20220523163353-1.jpeg||height="604" width="500"]]
3
4
5
6 **Table of Contents:**
7
8 {{toc/}}
9
10
11
12
13
14
15
16 = 1.Introduction =
17
18 == 1.1 What is LT Series I/O Controller ==
19
20 (((
21
22
23 (((
24 The Dragino (% style="color:blue" %)**LT series I/O Modules**(%%) are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as:** (% style="color:blue" %)analog current Input, analog voltage input(%%)**(% style="color:blue" %), **relay output**, **digital input**(%%) and (% style="color:blue" %)**digital output**(%%) etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
25 )))
26 )))
27
28 (((
29 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, building automation, and so on.
30 )))
31
32 (((
33 The LT I/O Controllers is aiming to provide an (% style="color:blue" %)**easy and low cost installation** (%%)by using LoRa wireless technology.
34 )))
35
36 (((
37 The use environment includes:
38 )))
39
40 (((
41 1) If user's area has LoRaWAN service coverage, they can just install the I/O controller and configure it to connect the LoRaWAN provider via wireless.
42 )))
43
44 (((
45 2) User can set up a LoRaWAN gateway locally and configure the controller to connect to the gateway via wireless.
46
47
48 )))
49
50 (((
51 [[image:1653295757274-912.png]]
52
53
54 )))
55
56 == 1.2  Specifications ==
57
58 (((
59
60
61 (% style="color:#037691" %)**Hardware System:**
62 )))
63
64 * (((
65 STM32L072xxxx MCU
66 )))
67 * (((
68 SX1276/78 Wireless Chip 
69 )))
70 * (((
71 (((
72 Power Consumption:
73 )))
74
75 * (((
76 Idle: 4mA@12v
77 )))
78 * (((
79 20dB Transmit: 34mA@12v
80 )))
81 )))
82
83 (((
84
85
86 (% style="color:#037691" %)**Interface for Model: LT22222-L:**
87 )))
88
89 * (((
90 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
91 )))
92 * (((
93 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
94 )))
95 * (((
96 2 x Relay Output (5A@250VAC / 30VDC)
97 )))
98 * (((
99 2 x 0~~20mA Analog Input (res:0.01mA)
100 )))
101 * (((
102 2 x 0~~30V Analog Input (res:0.01v)
103 )))
104 * (((
105 Power Input 7~~ 24V DC. 
106 )))
107
108 (((
109
110
111 (% style="color:#037691" %)**LoRa Spec:**
112 )))
113
114 * (((
115 (((
116 Frequency Range:
117 )))
118
119 * (((
120 Band 1 (HF): 862 ~~ 1020 Mhz
121 )))
122 * (((
123 Band 2 (LF): 410 ~~ 528 Mhz
124 )))
125 )))
126 * (((
127 168 dB maximum link budget.
128 )))
129 * (((
130 +20 dBm - 100 mW constant RF output vs.
131 )))
132 * (((
133 +14 dBm high efficiency PA.
134 )))
135 * (((
136 Programmable bit rate up to 300 kbps.
137 )))
138 * (((
139 High sensitivity: down to -148 dBm.
140 )))
141 * (((
142 Bullet-proof front end: IIP3 = -12.5 dBm.
143 )))
144 * (((
145 Excellent blocking immunity.
146 )))
147 * (((
148 Low RX current of 10.3 mA, 200 nA register retention.
149 )))
150 * (((
151 Fully integrated synthesizer with a resolution of 61 Hz.
152 )))
153 * (((
154 FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
155 )))
156 * (((
157 Built-in bit synchronizer for clock recovery.
158 )))
159 * (((
160 Preamble detection.
161 )))
162 * (((
163 127 dB Dynamic Range RSSI.
164 )))
165 * (((
166 Automatic RF Sense and CAD with ultra-fast AFC.
167 )))
168 * (((
169 Packet engine up to 256 bytes with CRC.
170
171
172
173 )))
174
175 == 1.3 Features ==
176
177
178 * LoRaWAN Class A & Class C protocol
179
180 * Optional Customized LoRa Protocol
181
182 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
183
184 * AT Commands to change parameters
185
186 * Remote configure parameters via LoRa Downlink
187
188 * Firmware upgradable via program port
189
190 * Counting
191
192
193
194 == 1.4  Applications ==
195
196
197 * Smart Buildings & Home Automation
198
199 * Logistics and Supply Chain Management
200
201 * Smart Metering
202
203 * Smart Agriculture
204
205 * Smart Cities
206
207 * Smart Factory
208
209
210
211 == 1.5 Hardware Variants ==
212
213
214 (% border="1" style="background-color:#f2f2f2; width:500px" %)
215 |(% style="background-color:#d9e2f3; color:#0070c0; width:103px" %)**Model**|(% style="background-color:#d9e2f3; color:#0070c0; width:131px" %)**Photo**|(% style="background-color:#d9e2f3; color:#0070c0; width:334px" %)**Description**
216 |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
217 (% style="text-align:center" %)
218 [[image:image-20230424115112-1.png||height="106" width="58"]]
219 )))|(% style="width:334px" %)(((
220 * 2 x Digital Input (Bi-direction)
221 * 2 x Digital Output
222 * 2 x Relay Output (5A@250VAC / 30VDC)
223 * 2 x 0~~20mA Analog Input (res:0.01mA)
224 * 2 x 0~~30V Analog Input (res:0.01v)
225 * 1 x Counting Port
226 )))
227
228
229
230 = 2. Power ON Device =
231
232
233 (((
234 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.
235 )))
236
237 (((
238 PWR will on when device is properly powered.
239
240
241 )))
242
243 [[image:1653297104069-180.png]]
244
245
246 = 3. Operation Mode =
247
248 == 3.1 How it works? ==
249
250
251 (((
252 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 (% style="color:green" %)**TX LED**(%%) will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. (% style="color:green" %)**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. 
253 )))
254
255 (((
256 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>>||anchor="H4.UseATCommand"]] to set the keys in the devices.
257 )))
258
259
260 == 3.2 Example to join LoRaWAN network ==
261
262
263 (((
264 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. 
265
266
267 )))
268
269 [[image:image-20220523172350-1.png||height="266" width="864"]]
270
271
272 (((
273 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:
274
275
276 )))
277
278 (((
279 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
280 )))
281
282 (((
283 Each LT is shipped with a sticker with the default device EUI as below:
284 )))
285
286 [[image:image-20230425173427-2.png]]
287
288
289 Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
290
291 **Add APP EUI in the application.**
292
293 [[image:1653297955910-247.png||height="321" width="716"]]
294
295
296 **Add APP KEY and DEV EUI**
297
298 [[image:1653298023685-319.png]]
299
300
301
302 (((
303 (% 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.
304
305
306 )))
307
308 [[image:1653298044601-602.png||height="405" width="709"]]
309
310
311 == 3.3 Uplink Payload ==
312
313
314 There are five working modes + one interrupt mode on LT for different type application:
315
316 * (% style="color:blue" %)**MOD1**(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
317 * (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO
318 * (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO
319 * (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
320 * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
321 * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
322
323
324
325 === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
326
327
328 (((
329 The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
330 )))
331
332 [[image:image-20220523174024-3.png]]
333
334 (((
335
336
337 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
338 )))
339
340 [[image:image-20220523174254-4.png]]
341
342 * RO is for relay. ROx=1 : close，ROx=0 always open.
343 * DI is for digital input. DIx=1: high or float, DIx=0: low.
344 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
345
346 (% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
347
348 For example if payload is: [[image:image-20220523175847-2.png]]
349
350
351 **The value for the interface is:  **
352
353 AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
354
355 AVI2 channel voltage is 0x04AC/1000=1.196V
356
357 ACI1 channel current is 0x1310/1000=4.880mA
358
359 ACI2 channel current is 0x1300/1000=4.864mA
360
361 The last byte 0xAA= 10101010(B) means
362
363 * [1] RO1 relay channel is close and the RO1 LED is ON.
364 * [0] RO2 relay channel is open and RO2 LED is OFF;
365
366 **LT22222-L:**
367
368 * [1] DI2 channel is high input and DI2 LED is ON;
369 * [0] DI1 channel is low input;
370
371 * [0] DO3 channel output state
372 ** DO3 is float in case no load between DO3 and V+.;
373 ** DO3 is high in case there is load between DO3 and V+.
374 ** DO3 LED is off in both case
375 * [1] DO2 channel output is low and DO2 LED is ON.
376 * [0] DO1 channel output state
377 ** DO1 is float in case no load between DO1 and V+.;
378 ** DO1 is high in case there is load between DO1 and V+.
379 ** DO1 LED is off in both case
380
381
382
383 === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
384
385
386 (((
387 **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
388 )))
389
390 (((
391 Total : 11 bytes payload
392 )))
393
394 [[image:image-20220523180452-3.png]]
395
396
397 (((
398 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
399 )))
400
401 [[image:image-20220523180506-4.png]]
402
403 * RO is for relay. ROx=1 : close，ROx=0 always open.
404 * FIRST: Indicate this is the first packet after join network.
405 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
406
407 (((
408 (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
409 )))
410
411 (((
412
413
414 **To use counting mode, please run:**
415 )))
416
417 (% class="box infomessage" %)
418 (((
419 (((
420 (((
421 **AT+MOD=2**
422 )))
423
424 (((
425 **ATZ**
426 )))
427 )))
428 )))
429
430 (((
431
432
433 (% style="color:#4f81bd" %)**AT Commands for counting:**
434
435
436 )))
437
438 (((
439 **For LT22222-L:**
440
441
442 (% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
443
444 (% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
445
446 (% style="color:blue" %)**AT+TRIG2=0,100**(%%)**  (set DI2 port to trigger on low level, valid signal is 100ms) **
447
448 (% style="color:blue" %)**AT+TRIG2=1,100**(%%)**  (set DI2 port to trigger on high level, valid signal is 100ms ) **
449
450 (% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set COUNT1 value to 60)**
451
452 (% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set COUNT2 value to 60)**
453 )))
454
455
456 === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
457
458
459 **LT22222-L**: This mode the DI1 is used as a counting pin.
460
461 [[image:image-20220523181246-5.png]]
462
463 (((
464
465
466 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
467 )))
468
469 [[image:image-20220523181301-6.png]]
470
471 * RO is for relay. ROx=1 : close，ROx=0 always open.
472 * FIRST: Indicate this is the first packet after join network.
473 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
474
475 (((
476 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
477 )))
478
479
480 (((
481 **To use counting mode, please run:**
482 )))
483
484 (% class="box infomessage" %)
485 (((
486 (((
487 (((
488 **AT+MOD=3**
489 )))
490
491 (((
492 **ATZ**
493 )))
494 )))
495 )))
496
497 (((
498 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
499 )))
500
501
502 === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
503
504
505 (((
506 **LT22222-L**: This mode the DI1 is used as a counting pin.
507 )))
508
509 (((
510 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.
511 )))
512
513 [[image:image-20220523181903-8.png]]
514
515
516 (((
517 (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
518 )))
519
520 [[image:image-20220523181727-7.png]]
521
522 * RO is for relay. ROx=1 : close，ROx=0 always open.
523 * FIRST: Indicate this is the first packet after join network.
524 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
525
526 (((
527 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
528 )))
529
530 (((
531
532
533 **To use this mode, please run:**
534 )))
535
536 (% class="box infomessage" %)
537 (((
538 (((
539 (((
540 **AT+MOD=4**
541 )))
542
543 (((
544 **ATZ**
545 )))
546 )))
547 )))
548
549
550 (((
551 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
552 )))
553
554 (((
555
556
557 **Plus below command for AVI1 Counting:**
558
559
560 (% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
561
562 (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
563
564 (% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**  (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
565
566 (% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**  (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
567 )))
568
569
570 === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
571
572
573 **LT22222-L**: This mode the DI1 is used as a counting pin.
574
575 [[image:image-20220523182334-9.png]]
576
577 (((
578
579
580 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
581 )))
582
583 * RO is for relay. ROx=1 : close，ROx=0 always open.
584 * FIRST: Indicate this is the first packet after join network.
585 * (((
586 DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
587 )))
588
589 (((
590 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
591 )))
592
593 (((
594
595
596 **To use this mode, please run:**
597 )))
598
599 (% class="box infomessage" %)
600 (((
601 (((
602 (((
603 **AT+MOD=5**
604 )))
605
606 (((
607 **ATZ**
608 )))
609 )))
610 )))
611
612 (((
613 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
614 )))
615
616
617 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
618
619
620 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
621
622 For example, if user has configured below commands:
623
624 * **AT+MOD=1 ** **~-~->**  The normal working mode
625 * **AT+ADDMOD6=1**   **~-~->**  Enable trigger
626
627 LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
628
629 1. Periodically uplink (Base on TDC time). Payload is same as the normal MOD (MOD 1 for above command). This uplink uses LoRaWAN (% style="color:#4f81bd" %)**unconfirmed**(%%) data type
630 1. Trigger uplink when meet the trigger condition. LT will sent two packets in this case, the first uplink use payload specify in this mod (mod=6), the second packets use the normal mod payload(MOD=1 for above settings). Both Uplinks use LoRaWAN (% style="color:#4f81bd" %)**CONFIRMED data type.**
631
632 (% style="color:#037691" %)**AT Command to set Trigger Condition**:
633
634
635 (% style="color:#4f81bd" %)**Trigger base on voltage**:
636
637 Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
638
639
640 **Example:**
641
642 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)
643
644 AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
645
646
647
648 (% style="color:#4f81bd" %)**Trigger base on current**:
649
650 Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
651
652
653 **Example:**
654
655 AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
656
657
658
659 (% style="color:#4f81bd" %)**Trigger base on DI status**:
660
661 DI status trigger Flag.
662
663 Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
664
665
666 **Example:**
667
668 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
669
670
671 (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
672
673 Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
674
675 Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
676
677 AA: Code for this downlink Command:
678
679 xx: 0: Limit for AV1 and AV2;  1: limit for AC1 and AC2 ; 2 DI1, DI2 trigger enable/disable
680
681 yy1 yy1: AC1 or AV1 low limit or DI1/DI2 trigger status.
682
683 yy2 yy2: AC1 or AV1 high limit.
684
685 yy3 yy3: AC2 or AV2 low limit.
686
687 Yy4 yy4: AC2 or AV2 high limit.
688
689
690 **Example1**: AA 00 13 88 00 00 00 00 00 00
691
692 Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
693
694
695 **Example2**: AA 02 01 00
696
697 Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
698
699
700
701 (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
702
703 MOD6 Payload : total 11 bytes payload
704
705 [[image:image-20220524085923-1.png]]
706
707
708 (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
709
710 [[image:image-20220524090106-2.png]]
711
712 * Each bits shows if the corresponding trigger has been configured.
713
714 **Example:**
715
716 10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
717
718
719
720 (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
721
722 [[image:image-20220524090249-3.png]]
723
724 * Each bits shows which status has been trigger on this uplink.
725
726 **Example:**
727
728 10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
729
730
731 (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
732
733 [[image:image-20220524090456-4.png]]
734
735 * Each bits shows which status has been trigger on this uplink.
736
737 **Example:**
738
739 00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
740
741 00000101: Means both DI1 and DI2 trigger are enabled.
742
743
744 (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
745
746 Downlink command to poll MOD6 status:
747
748 **AB 06**
749
750 When device got this command, it will send the MOD6 payload.
751
752
753 === 3.3.7 Payload Decoder ===
754
755 (((
756
757
758 **Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
759 )))
760
761
762 == 3.4 ​Configure LT via AT or Downlink ==
763
764
765 (((
766 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
767 )))
768
769 (((
770 (((
771 There are two kinds of Commands:
772 )))
773 )))
774
775 * (% style="color:blue" %)**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]]
776
777 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
778
779
780
781 === 3.4.1 Common Commands ===
782
783
784 (((
785 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]]
786 )))
787
788
789 === 3.4.2 Sensor related commands ===
790
791 ==== 3.4.2.1 Set Transmit Interval ====
792
793
794 Set device uplink interval.
795
796 * (% style="color:#037691" %)**AT Command:**
797
798 (% style="color:blue" %)**AT+TDC=N **
799
800
801 **Example: **AT+TDC=30000. Means set interval to 30 seconds
802
803
804 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
805
806 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
807
808
809
810 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
811
812
813 Set work mode.
814
815 * (% style="color:#037691" %)**AT Command:**
816
817 (% style="color:blue" %)**AT+MOD=N  **
818
819
820 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
821
822
823 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
824
825 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
826
827
828
829 ==== 3.4.2.3 Poll an uplink ====
830
831
832 * (% style="color:#037691" %)**AT Command:**
833
834 There is no AT Command to poll uplink
835
836
837 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
838
839 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
840
841
842 **Example**: 0x08FF, ask device to send an Uplink
843
844
845
846 ==== 3.4.2.4 Enable Trigger Mode ====
847
848
849 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
850
851 * (% style="color:#037691" %)**AT Command:**
852
853 (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
854
855 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
856
857 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
858
859
860 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
861
862 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
863
864
865
866 ==== 3.4.2.5 Poll trigger settings ====
867
868
869 Poll trigger settings,
870
871 * (% style="color:#037691" %)**AT Command:**
872
873 There is no AT Command for this feature.
874
875
876 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
877
878 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
879
880
881
882 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
883
884
885 Enable Disable DI1/DI2/DI2 as trigger,
886
887 * (% style="color:#037691" %)**AT Command:**
888
889 (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
890
891
892 **Example:**
893
894 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
895
896 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
897
898 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
899
900
901
902 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
903
904
905 Set DI1 or DI3(for LT-33222-L) trigger.
906
907 * (% style="color:#037691" %)**AT Command:**
908
909 (% style="color:blue" %)**AT+TRIG1=a,b**
910
911 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
912
913 (% style="color:red" %)**b :** (%%)delay timing.
914
915
916 **Example:**
917
918 AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
919
920
921 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
922
923 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
924
925
926
927 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
928
929
930 Set DI2 trigger.
931
932 * (% style="color:#037691" %)**AT Command:**
933
934 (% style="color:blue" %)**AT+TRIG2=a,b**
935
936 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
937
938 (% style="color:red" %)**b :** (%%)delay timing.
939
940
941 **Example:**
942
943 AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
944
945
946 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
947
948 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
949
950
951
952 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
953
954
955 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
956
957 * (% style="color:#037691" %)**AT Command**
958
959 (% style="color:blue" %)**AT+ACLIM**
960
961
962 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
963
964 (% style="color:blue" %)**0x AA 01 aa bb cc dd ee ff gg hh        ** (%%) ~/~/ same as AT+ACLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
965
966
967
968 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
969
970
971 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
972
973 * (% style="color:#037691" %)**AT Command**
974
975 (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
976
977
978 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
979
980 (% style="color:blue" %)**0x AA 00 aa bb cc dd ee ff gg hh    ** (%%) ~/~/ same as AT+AVLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
981
982
983
984 ==== 3.4.2.11 Trigger – Set minimum interval ====
985
986
987 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
988
989 * (% style="color:#037691" %)**AT Command**
990
991 (% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
992
993
994 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
995
996 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
997
998 (((
999
1000
1001 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
1002 )))
1003
1004
1005
1006 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1007
1008
1009 * (% style="color:#037691" %)**AT Command**
1010
1011 There is no AT Command to control Digital Output
1012
1013
1014 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1015 * (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1016
1017 (((
1018 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1019 )))
1020
1021 (((
1022 01: Low,  00: High ,  11: No action
1023 )))
1024
1025 [[image:image-20220524092754-5.png]]
1026
1027 (((
1028 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1029 )))
1030
1031 (((
1032 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1033 )))
1034
1035
1036
1037 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1038
1039
1040 * (% style="color:#037691" %)**AT Command**
1041
1042 There is no AT Command to control Digital Output
1043
1044
1045 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1046
1047 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1048
1049
1050 This is to control the digital output time of DO pin. Include four bytes:
1051
1052 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1053
1054 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1055
1056 01: DO pins will change back to original state after timeout.
1057
1058 00: DO pins will change to an inverter state after timeout 
1059
1060
1061 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1062
1063 [[image:image-20220524093238-6.png]]
1064
1065
1066 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1067
1068 [[image:image-20220524093328-7.png]]
1069
1070
1071 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1072
1073 [[image:image-20220524093351-8.png]]
1074
1075
1076 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
1077
1078 Latching time. Unit: ms
1079
1080
1081 (% style="color:red" %)**Note: **
1082
1083 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1084
1085 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1086
1087
1088 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1089
1090
1091 **Example payload:**
1092
1093 **~1. A9 01 01 01 01 07 D0**
1094
1095 DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
1096
1097 **2. A9 01 00 01 11 07 D0**
1098
1099 DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
1100
1101 **3. A9 00 00 00 00 07 D0**
1102
1103 DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
1104
1105 **4. A9 00 11 01 00 07 D0**
1106
1107 DO1 pin no action, DO2 pin set low, DO3 pin set high, last 2 seconds, then DO1 pin no action, DO2 pin set high, DO3 pin set low
1108
1109
1110
1111 ==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1112
1113
1114 * (% style="color:#037691" %)**AT Command:**
1115
1116 There is no AT Command to control Relay Output
1117
1118
1119 * (% style="color:#037691" %)**Downlink Payload (prefix 0x03):**
1120
1121 (% style="color:blue" %)**0x03 aa bb     ** (%%)~/~/ Set RO1/RO2 output
1122
1123
1124 (((
1125 If payload = 0x030100, it means set RO1 to close and RO2 to open.
1126 )))
1127
1128 (((
1129 01: Close ,  00: Open , 11: No action
1130 )))
1131
1132 (((
1133 [[image:image-20230426161322-1.png]]
1134 )))
1135
1136 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1137
1138
1139
1140 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1141
1142
1143 * (% style="color:#037691" %)**AT Command:**
1144
1145 There is no AT Command to control Relay Output
1146
1147
1148 * (% style="color:#037691" %)**Downlink Payload (prefix 0x05):**
1149
1150 (% style="color:blue" %)**0x05 aa bb cc dd     ** (%%)~/~/ Set RO1/RO2 relay with time control
1151
1152
1153 This is to control the relay output time of relay. Include four bytes:
1154
1155 (% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
1156
1157 (% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
1158
1159 01: Relays will change back to original state after timeout.
1160
1161 00: Relays will change to an inverter state after timeout
1162
1163
1164 (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1165
1166 [[image:image-20221008095908-1.png||height="364" width="564"]]
1167
1168
1169 (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1170
1171
1172 (% style="color:red" %)**Note:**
1173
1174 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1175
1176 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1177
1178
1179 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1180
1181
1182 **Example payload:**
1183
1184 **~1. 05 01 11 07 D0**
1185
1186 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1187
1188 **2. 05 01 10 07 D0**
1189
1190 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1191
1192 **3. 05 00 01 07 D0**
1193
1194 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1195
1196 **4. 05 00 00 07 D0**
1197
1198 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1199
1200
1201
1202 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1203
1204
1205 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1206
1207 * (% style="color:#037691" %)**AT Command:**
1208
1209 (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1210
1211
1212 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1213
1214 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1215
1216
1217
1218 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1219
1220
1221 * (% style="color:#037691" %)**AT Command:**
1222
1223 (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1224
1225 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1226
1227 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1228
1229
1230 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1231
1232 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1233
1234
1235
1236 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1237
1238
1239 Clear counting for counting mode
1240
1241 * (% style="color:#037691" %)**AT Command:**
1242
1243 (% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1244
1245
1246 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1247
1248 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1249
1250
1251
1252 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1253
1254
1255 * (% style="color:#037691" %)**AT Command:**
1256
1257 (% style="color:blue" %)**AT+COUTIME=60  **(%%)~/~/ Set save time to 60 seconds. Device will save the counting result in internal flash every 60 seconds. (min value: 30)
1258
1259
1260 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1261
1262 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1263
1264 (((
1265 range: aa bb cc:0 to 16777215,  (unit:second)
1266 )))
1267
1268
1269
1270 ==== 3.4.2.20 Reset save RO DO state ====
1271
1272
1273 * (% style="color:#037691" %)**AT Command:**
1274
1275 (% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1276
1277 (% style="color:blue" %)**AT+RODORESET=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.
1278
1279
1280 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1281
1282 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1283
1284
1285
1286 ==== 3.4.2.21 Encrypted payload ====
1287
1288
1289 * (% style="color:#037691" %)**AT Command:**
1290
1291 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1292
1293 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1294
1295
1296
1297 ==== 3.4.2.22 Get sensor value ====
1298
1299
1300 * (% style="color:#037691" %)**AT Command:**
1301
1302 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1303
1304 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1305
1306
1307
1308 ==== 3.4.2.23 Resets the downlink packet count ====
1309
1310
1311 * (% style="color:#037691" %)**AT Command:**
1312
1313 (% style="color:blue" %)**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)
1314
1315 (% style="color:blue" %)**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.
1316
1317
1318
1319 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1320
1321
1322 * (% style="color:#037691" %)**AT Command:**
1323
1324 (% style="color:blue" %)**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)
1325
1326 (% style="color:blue" %)**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.
1327
1328
1329 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1330
1331 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1332
1333
1334
1335 ==== 3.4.2.25 Copy downlink to uplink ====
1336
1337
1338 * (% style="color:#037691" %)**AT Command**(%%)**:**
1339
1340 (% style="color:blue" %)**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.
1341
1342 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.
1343
1344
1345 [[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"]]
1346
1347 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1348
1349
1350
1351 [[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"]]
1352
1353 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1354
1355
1356
1357 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1358
1359
1360 * (((
1361 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1362
1363 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1364
1365
1366 )))
1367
1368 **Example：**
1369
1370 [[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"]]
1371
1372
1373 == 3.5 Integrate with Mydevice ==
1374
1375
1376 Mydevices provides a human friendly interface to show the sensor data, once we have data in TTN, we can use Mydevices to connect to TTN and see the data in Mydevices. Below are the steps:
1377
1378 (((
1379 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1380 )))
1381
1382 (((
1383 (% style="color:blue" %)**Step 2**(%%): To configure the Application to forward data to Mydevices you will need to add integration. To add the Mydevices integration, perform the following steps:
1384
1385
1386 )))
1387
1388 [[image:image-20220719105525-1.png||height="377" width="677"]]
1389
1390
1391
1392 [[image:image-20220719110247-2.png||height="388" width="683"]]
1393
1394
1395 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1396
1397 (% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1398
1399 Search under The things network
1400
1401 [[image:1653356838789-523.png||height="337" width="740"]]
1402
1403
1404
1405 After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1406
1407 [[image:image-20220524094909-1.png||height="335" width="729"]]
1408
1409
1410 [[image:image-20220524094909-2.png||height="337" width="729"]]
1411
1412
1413 [[image:image-20220524094909-3.png||height="338" width="727"]]
1414
1415
1416 [[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1417
1418
1419 [[image:image-20220524094909-5.png||height="341" width="734"]]
1420
1421
1422 == 3.6 Interface Detail ==
1423
1424 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1425
1426
1427 Support NPN Type sensor
1428
1429 [[image:1653356991268-289.png]]
1430
1431
1432 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1433
1434
1435 (((
1436 The DI port of LT-22222-L can support NPN or PNP output sensor.
1437 )))
1438
1439 (((
1440 (((
1441 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.
1442
1443
1444 )))
1445 )))
1446
1447 [[image:1653357170703-587.png]]
1448
1449 (((
1450 (((
1451 When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1452 )))
1453 )))
1454
1455 (((
1456
1457 )))
1458
1459 (((
1460 (% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1461 )))
1462
1463 (((
1464 This type of sensor will output a low signal GND when active.
1465 )))
1466
1467 * (((
1468 Connect sensor's output to DI1-
1469 )))
1470 * (((
1471 Connect sensor's VCC to DI1+.
1472 )))
1473
1474 (((
1475 So when sensor active, the current between NEC2501 pin1 and pin2 is：
1476 )))
1477
1478 (((
1479 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1480 )))
1481
1482 (((
1483 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.
1484 )))
1485
1486 (((
1487
1488 )))
1489
1490 (((
1491 (% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1492 )))
1493
1494 (((
1495 This type of sensor will output a high signal (example 24v) when active.
1496 )))
1497
1498 * (((
1499 Connect sensor's output to DI1+
1500 )))
1501 * (((
1502 Connect sensor's GND DI1-.
1503 )))
1504
1505 (((
1506 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1507 )))
1508
1509 (((
1510 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1511 )))
1512
1513 (((
1514 If **DI1+ = 24v**, the[[image:1653968155772-850.png||height="23" width="19"]] 24mA , So the LT-22222-L will be able to detect this high active signal.
1515 )))
1516
1517 (((
1518
1519 )))
1520
1521 (((
1522 (% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1523 )))
1524
1525 (((
1526 Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1527 )))
1528
1529 * (((
1530 Connect sensor's output to DI1+ with a serial 50K resistor
1531 )))
1532 * (((
1533 Connect sensor's GND DI1-.
1534 )))
1535
1536 (((
1537 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1538 )))
1539
1540 (((
1541 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1542 )))
1543
1544 (((
1545 If sensor output is 220v, the [[image:1653968155772-850.png||height="23" width="19"]](% 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.
1546 )))
1547
1548
1549 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1550
1551
1552 (% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1553
1554 (% style="color:red" %)**Note: DO pins go to float when device is power off.**
1555
1556 [[image:1653357531600-905.png]]
1557
1558
1559 === 3.6.4 Analog Input Interface ===
1560
1561
1562 The analog input interface is as below. The LT will measure the IN2 voltage so to calculate the current pass the Load. The formula is:
1563
1564
1565 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1566
1567 [[image:1653357592296-182.png]]
1568
1569 Example to connect a 4~~20mA sensor
1570
1571 We take the wind speed sensor as an example for reference only.
1572
1573
1574 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1575
1576 (% style="color:red" %)**Red:  12~~24v**
1577
1578 (% style="color:#ffc000" %)**Yellow:  4~~20mA**
1579
1580 **Black:  GND**
1581
1582
1583 **Connection diagram:**
1584
1585 [[image:1653357640609-758.png]]
1586
1587 [[image:1653357648330-671.png||height="155" width="733"]]
1588
1589
1590 === 3.6.5 Relay Output ===
1591
1592
1593 (((
1594 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:
1595
1596 **Note**: RO pins go to Open(NO) when device is power off.
1597 )))
1598
1599 [[image:image-20220524100215-9.png]]
1600
1601
1602 [[image:image-20220524100215-10.png||height="382" width="723"]]
1603
1604
1605 == 3.7 LEDs Indicators ==
1606
1607
1608 [[image:image-20220524100748-11.png]]
1609
1610
1611 = 4. Use AT Command =
1612
1613 == 4.1 Access AT Command ==
1614
1615
1616 (((
1617 LT supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LT for using AT command, as below.
1618 )))
1619
1620 (((
1621
1622 )))
1623
1624 [[image:1653358238933-385.png]]
1625
1626
1627 (((
1628 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:
1629 )))
1630
1631 [[image:1653358355238-883.png]]
1632
1633
1634 (((
1635 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/]]
1636 )))
1637
1638 (((
1639 AT+<CMD>?        : Help on <CMD>
1640 )))
1641
1642 (((
1643 AT+<CMD>         : Run <CMD>
1644 )))
1645
1646 (((
1647 AT+<CMD>=<value> : Set the value
1648 )))
1649
1650 (((
1651 AT+<CMD>=?       :  Get the value
1652 )))
1653
1654 (((
1655 ATZ: Trig a reset of the MCU
1656 )))
1657
1658 (((
1659 AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1660 )))
1661
1662 (((
1663 AT+DEUI: Get or Set the Device EUI
1664 )))
1665
1666 (((
1667 AT+DADDR: Get or Set the Device Address
1668 )))
1669
1670 (((
1671 AT+APPKEY: Get or Set the Application Key
1672 )))
1673
1674 (((
1675 AT+NWKSKEY: Get or Set the Network Session Key
1676 )))
1677
1678 (((
1679 AT+APPSKEY:  Get or Set the Application Session Key
1680 )))
1681
1682 (((
1683 AT+APPEUI:  Get or Set the Application EUI
1684 )))
1685
1686 (((
1687 AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1688 )))
1689
1690 (((
1691 AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1692 )))
1693
1694 (((
1695 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1696 )))
1697
1698 (((
1699 AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1700 )))
1701
1702 (((
1703 AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1704 )))
1705
1706 (((
1707 AT+RX2FQ: Get or Set the Rx2 window frequency
1708 )))
1709
1710 (((
1711 AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1712 )))
1713
1714 (((
1715 AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1716 )))
1717
1718 (((
1719 AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1720 )))
1721
1722 (((
1723 AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1724 )))
1725
1726 (((
1727 AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1728 )))
1729
1730 (((
1731 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1732 )))
1733
1734 (((
1735 AT+NWKID: Get or Set the Network ID
1736 )))
1737
1738 (((
1739 AT+FCU: Get or Set the Frame Counter Uplink
1740 )))
1741
1742 (((
1743 AT+FCD: Get or Set the Frame Counter Downlink
1744 )))
1745
1746 (((
1747 AT+CLASS: Get or Set the Device Class
1748 )))
1749
1750 (((
1751 AT+JOIN: Join network
1752 )))
1753
1754 (((
1755 AT+NJS: Get OTAA Join Status
1756 )))
1757
1758 (((
1759 AT+SENDB: Send hexadecimal data along with the application port
1760 )))
1761
1762 (((
1763 AT+SEND: Send text data along with the application port
1764 )))
1765
1766 (((
1767 AT+RECVB: Print last received data in binary format (with hexadecimal values)
1768 )))
1769
1770 (((
1771 AT+RECV: Print last received data in raw format
1772 )))
1773
1774 (((
1775 AT+VER:  Get current image version and Frequency Band
1776 )))
1777
1778 (((
1779 AT+CFM: Get or Set the confirmation mode (0-1)
1780 )))
1781
1782 (((
1783 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1784 )))
1785
1786 (((
1787 AT+SNR: Get the SNR of the last received packet
1788 )))
1789
1790 (((
1791 AT+RSSI: Get the RSSI of the last received packet
1792 )))
1793
1794 (((
1795 AT+TDC: Get or set the application data transmission interval in ms
1796 )))
1797
1798 (((
1799 AT+PORT: Get or set the application port
1800 )))
1801
1802 (((
1803 AT+DISAT: Disable AT commands
1804 )))
1805
1806 (((
1807 AT+PWORD: Set password, max 9 digits
1808 )))
1809
1810 (((
1811 AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1812 )))
1813
1814 (((
1815 AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1816 )))
1817
1818 (((
1819 AT+CFG: Print all settings
1820 )))
1821
1822
1823 == 4.2 Common AT Command Sequence ==
1824
1825 === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1826
1827 (((
1828
1829
1830 (((
1831 (% style="color:blue" %)**If device has not joined network yet:**
1832 )))
1833 )))
1834
1835 (((
1836 (% style="background-color:#dcdcdc" %)**123456**
1837 )))
1838
1839 (((
1840 (% style="background-color:#dcdcdc" %)**AT+FDR**
1841 )))
1842
1843 (((
1844 (% style="background-color:#dcdcdc" %)**123456**
1845 )))
1846
1847 (((
1848 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1849 )))
1850
1851 (((
1852 (% style="background-color:#dcdcdc" %)**ATZ**
1853 )))
1854
1855
1856 (((
1857 (% style="color:blue" %)**If device already joined network:**
1858 )))
1859
1860 (((
1861 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1862 )))
1863
1864 (((
1865 (% style="background-color:#dcdcdc" %)**ATZ**
1866 )))
1867
1868
1869 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1870
1871 (((
1872
1873
1874 (((
1875 (% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1876 )))
1877 )))
1878
1879 (((
1880 (% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
1881 )))
1882
1883 (((
1884 (% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1885 )))
1886
1887 (((
1888 (% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
1889 )))
1890
1891 (((
1892 (% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
1893 )))
1894
1895 (((
1896 (% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
1897 )))
1898
1899 (((
1900 (% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
1901 )))
1902
1903 (((
1904 (% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
1905 )))
1906
1907 (((
1908 (% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
1909 )))
1910
1911 (((
1912 (% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
1913 )))
1914
1915 (((
1916 (% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
1917 )))
1918
1919 (((
1920 (% 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.
1921 )))
1922
1923 (((
1924 (% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
1925
1926
1927 )))
1928
1929 (((
1930 (% style="color:red" %)**Note:**
1931 )))
1932
1933 (((
1934 **~1. Make sure the device is set to ABP mode in the IoT Server.**
1935
1936 **2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
1937
1938 **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?
1939 dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1940
1941 **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.**
1942
1943
1944 )))
1945
1946 (((
1947 [[image:1653359097980-169.png||height="188" width="729"]]
1948 )))
1949
1950 (((
1951
1952 )))
1953
1954 === 4.2.3 Change to Class A ===
1955
1956
1957 (((
1958 (% style="color:blue" %)**If sensor JOINED:**
1959
1960 (% style="background-color:#dcdcdc" %)**AT+CLASS=A
1961 ATZ**
1962 )))
1963
1964
1965 = 5. Case Study =
1966
1967 == 5.1 Counting how many objects pass in Flow Line ==
1968
1969
1970 Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
1971
1972
1973 = 6. FAQ =
1974
1975 == 6.1 How to upgrade the image? ==
1976
1977
1978 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1979
1980 * Support new features
1981 * For bug fix
1982 * Change LoRaWAN bands.
1983
1984 Below shows the hardware connection for how to upload an image to the LT:
1985
1986 [[image:1653359603330-121.png]]
1987
1988
1989 (((
1990 (% 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]].
1991 (% 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]].
1992 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
1993
1994
1995 (((
1996 (% style="color:blue" %)**For LT-22222-L**(%%):
1997 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.
1998 )))
1999
2000
2001 )))
2002
2003 [[image:image-20220524103407-12.png]]
2004
2005
2006 [[image:image-20220524103429-13.png]]
2007
2008
2009 [[image:image-20220524104033-15.png]]
2010
2011
2012 (% 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:
2013
2014
2015 [[image:1653360054704-518.png||height="186" width="745"]]
2016
2017
2018 (((
2019 (((
2020 == 6.2 How to change the LoRa Frequency Bands/Region? ==
2021
2022
2023 )))
2024 )))
2025
2026 (((
2027 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2028 )))
2029
2030 (((
2031
2032
2033 == 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2034
2035
2036 )))
2037
2038 (((
2039 (((
2040 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2041 )))
2042 )))
2043
2044 (((
2045 (((
2046 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2047
2048
2049 )))
2050 )))
2051
2052 (((
2053 (% 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.
2054
2055
2056 )))
2057
2058 (((
2059 [[image:1653360231087-571.png||height="401" width="727"]]
2060
2061
2062 )))
2063
2064 (((
2065 (% 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.**
2066 )))
2067
2068
2069
2070 (((
2071 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2072
2073
2074 )))
2075
2076 (((
2077 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2078 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2079 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2080 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2081 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2082 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2083 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2084 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2085 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2086 )))
2087
2088
2089 (((
2090 As shown in below:
2091 )))
2092
2093 [[image:1653360498588-932.png||height="485" width="726"]]
2094
2095
2096 == 6.4 Can I see counting event in Serial? ==
2097
2098
2099 (((
2100 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.
2101
2102
2103 == 6.5 Can i use point to point communication for LT-22222-L? ==
2104
2105
2106 Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]  ，this is [[firmware>>https://github.com/dragino/LT-22222-L/releases]].
2107
2108
2109 )))
2110
2111 (((
2112 == 6.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2113
2114
2115 If the device is not shut down, but directly powered off.
2116
2117 It will default that this is a power-off state.
2118
2119 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2120
2121 After restart, the status before power failure will be read from flash.
2122
2123
2124 == 6.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2125
2126
2127 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2128
2129
2130 [[image:image-20221006170630-1.png||height="610" width="945"]]
2131
2132
2133 == 6.8 Can LT22222-L save RO state? ==
2134
2135
2136 Firmware version needs to be no less than 1.6.0.
2137
2138
2139 = 7. Trouble Shooting =
2140 )))
2141
2142 (((
2143 (((
2144 == 7.1 Downlink doesn't work, how to solve it? ==
2145
2146
2147 )))
2148 )))
2149
2150 (((
2151 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2152 )))
2153
2154 (((
2155
2156
2157 == 7.2 Have trouble to upload image. ==
2158
2159
2160 )))
2161
2162 (((
2163 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2164 )))
2165
2166 (((
2167
2168
2169 == 7.3 Why I can't join TTN in US915 /AU915 bands? ==
2170
2171
2172 )))
2173
2174 (((
2175 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2176 )))
2177
2178
2179 = 8. Order Info =
2180
2181
2182 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2183
2184 (% style="color:#4f81bd" %)**XXX:**
2185
2186 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2187 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2188 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2189 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2190 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2191 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2192 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2193 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2194 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2195
2196
2197
2198 = 9. Packing Info =
2199
2200
2201 **Package Includes**:
2202
2203 * LT-22222-L I/O Controller x 1
2204 * Stick Antenna for LoRa RF part x 1
2205 * Bracket for controller x1
2206 * Program cable x 1
2207
2208 **Dimension and weight**:
2209
2210 * Device Size: 13.5 x 7 x 3 cm
2211 * Device Weight: 105g
2212 * Package Size / pcs : 14.5 x 8 x 5 cm
2213 * Weight / pcs : 170g
2214
2215
2216
2217 = 10. Support =
2218
2219
2220 * (((
2221 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.
2222 )))
2223 * (((
2224 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 [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
2225
2226
2227
2228 )))
2229
2230 = 11. Reference​​​​​ =
2231
2232
2233 * 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]]
2234 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2235 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]

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