Version 114.1 by Xiaoling on 2023/04/25 17:33
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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, smartphone detection, 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 == 1.4  Applications ==
193
194
195 * Smart Buildings & Home Automation
196
197 * Logistics and Supply Chain Management
198
199 * Smart Metering
200
201 * Smart Agriculture
202
203 * Smart Cities
204
205 * Smart Factory
206
207
208
209 == 1.5 Hardware Variants ==
210
211
212 (% border="1" style="background-color:#f2f2f2; width:500px" %)
213 |(% 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**
214 |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
215 (% style="text-align:center" %)
216 [[image:image-20230424115112-1.png||height="106" width="58"]]
217 )))|(% style="width:334px" %)(((
218 * 2 x Digital Input (Bi-direction)
219 * 2 x Digital Output
220 * 2 x Relay Output (5A@250VAC / 30VDC)
221 * 2 x 0~~20mA Analog Input (res:0.01mA)
222 * 2 x 0~~30V Analog Input (res:0.01v)
223 * 1 x Counting Port
224 )))
225
226
227
228 = 2. Power ON Device =
229
230
231 (((
232 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.
233 )))
234
235 (((
236 PWR will on when device is properly powered.
237
238
239 )))
240
241 [[image:1653297104069-180.png]]
242
243
244 = 3. Operation Mode =
245
246 == 3.1 How it works? ==
247
248
249 (((
250 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. 
251 )))
252
253 (((
254 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.
255 )))
256
257
258 == 3.2 Example to join LoRaWAN network ==
259
260
261 (((
262 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. 
263
264
265 )))
266
267 [[image:image-20220523172350-1.png||height="266" width="864"]]
268
269
270 (((
271 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:
272
273
274 )))
275
276 (((
277 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
278 )))
279
280 (((
281 Each LT is shipped with a sticker with the default device EUI as below:
282 )))
283
284 [[image:1653297924498-393.png]]
285
286
287 Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
288
289 **Add APP EUI in the application.**
290
291 [[image:1653297955910-247.png||height="321" width="716"]]
292
293
294 **Add APP KEY and DEV EUI**
295
296 [[image:1653298023685-319.png]]
297
298
299
300 (((
301 (% 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.
302
303
304 )))
305
306 [[image:1653298044601-602.png||height="405" width="709"]]
307
308
309 == 3.3 Uplink Payload ==
310
311
312 There are five working modes + one interrupt mode on LT for different type application:
313
314 * (% style="color:blue" %)**MOD1**(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
315 * (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO
316 * (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO
317 * (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
318 * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
319 * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
320
321
322
323 === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
324
325
326 (((
327 The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
328 )))
329
330 [[image:image-20220523174024-3.png]]
331
332 (((
333
334
335 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
336 )))
337
338 [[image:image-20220523174254-4.png]]
339
340 * RO is for relay. ROx=1 : close，ROx=0 always open.
341 * DI is for digital input. DIx=1: high or float, DIx=0: low.
342 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
343
344 (% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
345
346 For example if payload is: [[image:image-20220523175847-2.png]]
347
348
349 **The value for the interface is:  **
350
351 AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
352
353 AVI2 channel voltage is 0x04AC/1000=1.196V
354
355 ACI1 channel current is 0x1310/1000=4.880mA
356
357 ACI2 channel current is 0x1300/1000=4.864mA
358
359 The last byte 0xAA= 10101010(B) means
360
361 * [1] RO1 relay channel is close and the RO1 LED is ON.
362 * [0] RO2 relay channel is open and RO2 LED is OFF;
363
364 **LT22222-L:**
365
366 * [1] DI2 channel is high input and DI2 LED is ON;
367 * [0] DI1 channel is low input;
368
369 * [0] DO3 channel output state
370 ** DO3 is float in case no load between DO3 and V+.;
371 ** DO3 is high in case there is load between DO3 and V+.
372 ** DO3 LED is off in both case
373 * [1] DO2 channel output is low and DO2 LED is ON.
374 * [0] DO1 channel output state
375 ** DO1 is float in case no load between DO1 and V+.;
376 ** DO1 is high in case there is load between DO1 and V+.
377 ** DO1 LED is off in both case
378
379
380
381 === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
382
383
384 (((
385 **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
386 )))
387
388 (((
389 Total : 11 bytes payload
390 )))
391
392 [[image:image-20220523180452-3.png]]
393
394
395 (((
396 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
397 )))
398
399 [[image:image-20220523180506-4.png]]
400
401 * RO is for relay. ROx=1 : close，ROx=0 always open.
402 * FIRST: Indicate this is the first packet after join network.
403 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
404
405 (((
406 (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
407 )))
408
409 (((
410
411
412 **To use counting mode, please run:**
413 )))
414
415 (% class="box infomessage" %)
416 (((
417 (((
418 (((
419 **AT+MOD=2**
420 )))
421
422 (((
423 **ATZ**
424 )))
425 )))
426 )))
427
428 (((
429
430
431 (% style="color:#4f81bd" %)**AT Commands for counting:**
432
433
434 )))
435
436 (((
437 **For LT22222-L:**
438
439
440 (% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
441
442 (% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
443
444 (% style="color:blue" %)**AT+TRIG2=0,100**(%%)**  (set DI2 port to trigger on low level, valid signal is 100ms) **
445
446 (% style="color:blue" %)**AT+TRIG2=1,100**(%%)**  (set DI2 port to trigger on high level, valid signal is 100ms ) **
447
448 (% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set COUNT1 value to 60)**
449
450 (% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set COUNT2 value to 60)**
451 )))
452
453
454 === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
455
456
457 **LT22222-L**: This mode the DI1 is used as a counting pin.
458
459 [[image:image-20220523181246-5.png]]
460
461 (((
462
463
464 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
465 )))
466
467 [[image:image-20220523181301-6.png]]
468
469 * RO is for relay. ROx=1 : close，ROx=0 always open.
470 * FIRST: Indicate this is the first packet after join network.
471 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
472
473 (((
474 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
475 )))
476
477
478 (((
479 **To use counting mode, please run:**
480 )))
481
482 (% class="box infomessage" %)
483 (((
484 (((
485 (((
486 **AT+MOD=3**
487 )))
488
489 (((
490 **ATZ**
491 )))
492 )))
493 )))
494
495 (((
496 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
497 )))
498
499
500 === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
501
502
503 (((
504 **LT22222-L**: This mode the DI1 is used as a counting pin.
505 )))
506
507 (((
508 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.
509 )))
510
511 [[image:image-20220523181903-8.png]]
512
513
514 (((
515 (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
516 )))
517
518 [[image:image-20220523181727-7.png]]
519
520 * RO is for relay. ROx=1 : close，ROx=0 always open.
521 * FIRST: Indicate this is the first packet after join network.
522 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
523
524 (((
525 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
526 )))
527
528 (((
529
530
531 **To use this mode, please run:**
532 )))
533
534 (% class="box infomessage" %)
535 (((
536 (((
537 (((
538 **AT+MOD=4**
539 )))
540
541 (((
542 **ATZ**
543 )))
544 )))
545 )))
546
547
548 (((
549 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
550 )))
551
552 (((
553
554
555 **Plus below command for AVI1 Counting:**
556
557
558 (% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
559
560 (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
561
562 (% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**  (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
563
564 (% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**  (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
565 )))
566
567
568 === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
569
570
571 **LT22222-L**: This mode the DI1 is used as a counting pin.
572
573 [[image:image-20220523182334-9.png]]
574
575 (((
576
577
578 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
579 )))
580
581 * RO is for relay. ROx=1 : close，ROx=0 always open.
582 * FIRST: Indicate this is the first packet after join network.
583 * (((
584 DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
585 )))
586
587 (((
588 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
589 )))
590
591 (((
592
593
594 **To use this mode, please run:**
595 )))
596
597 (% class="box infomessage" %)
598 (((
599 (((
600 (((
601 **AT+MOD=5**
602 )))
603
604 (((
605 **ATZ**
606 )))
607 )))
608 )))
609
610 (((
611 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
612 )))
613
614
615 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
616
617
618 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
619
620 For example, if user has configured below commands:
621
622 * **AT+MOD=1 ** **~-~->**  The normal working mode
623 * **AT+ADDMOD6=1**   **~-~->**  Enable trigger
624
625 LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
626
627 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
628 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.**
629
630 (% style="color:#037691" %)**AT Command to set Trigger Condition**:
631
632
633 (% style="color:#4f81bd" %)**Trigger base on voltage**:
634
635 Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
636
637
638 **Example:**
639
640 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)
641
642 AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
643
644
645
646 (% style="color:#4f81bd" %)**Trigger base on current**:
647
648 Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
649
650
651 **Example:**
652
653 AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
654
655
656
657 (% style="color:#4f81bd" %)**Trigger base on DI status**:
658
659 DI status trigger Flag.
660
661 Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
662
663
664 **Example:**
665
666 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
667
668
669 (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
670
671 Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
672
673 Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
674
675 AA: Code for this downlink Command:
676
677 xx: 0: Limit for AV1 and AV2;  1: limit for AC1 and AC2 ; 2 DI1, DI2 trigger enable/disable
678
679 yy1 yy1: AC1 or AV1 low limit or DI1/DI2 trigger status.
680
681 yy2 yy2: AC1 or AV1 high limit.
682
683 yy3 yy3: AC2 or AV2 low limit.
684
685 Yy4 yy4: AC2 or AV2 high limit.
686
687
688 **Example1**: AA 00 13 88 00 00 00 00 00 00
689
690 Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
691
692
693 **Example2**: AA 02 01 00
694
695 Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
696
697
698
699 (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
700
701 MOD6 Payload : total 11 bytes payload
702
703 [[image:image-20220524085923-1.png]]
704
705
706 (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
707
708 [[image:image-20220524090106-2.png]]
709
710 * Each bits shows if the corresponding trigger has been configured.
711
712 **Example:**
713
714 10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
715
716
717
718 (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
719
720 [[image:image-20220524090249-3.png]]
721
722 * Each bits shows which status has been trigger on this uplink.
723
724 **Example:**
725
726 10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
727
728
729 (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
730
731 [[image:image-20220524090456-4.png]]
732
733 * Each bits shows which status has been trigger on this uplink.
734
735 **Example:**
736
737 00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
738
739 00000101: Means both DI1 and DI2 trigger are enabled.
740
741
742 (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
743
744 Downlink command to poll MOD6 status:
745
746 **AB 06**
747
748 When device got this command, it will send the MOD6 payload.
749
750
751 === 3.3.7 Payload Decoder ===
752
753 (((
754
755
756 **Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
757 )))
758
759
760 == 3.4 ​Configure LT via AT or Downlink ==
761
762
763 (((
764 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
765 )))
766
767 (((
768 (((
769 There are two kinds of Commands:
770 )))
771 )))
772
773 * (% 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]]
774
775 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
776
777
778
779 === 3.4.1 Common Commands ===
780
781
782 (((
783 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]]
784 )))
785
786
787 === 3.4.2 Sensor related commands ===
788
789 ==== 3.4.2.1 Set Transmit Interval ====
790
791
792 Set device uplink interval.
793
794 * (% style="color:#037691" %)**AT Command:**
795
796 (% style="color:blue" %)**AT+TDC=N **
797
798
799 **Example: **AT+TDC=30000. Means set interval to 30 seconds
800
801
802 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
803
804 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
805
806
807
808 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
809
810
811 Set work mode.
812
813 * (% style="color:#037691" %)**AT Command:**
814
815 (% style="color:blue" %)**AT+MOD=N  **
816
817
818 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
819
820
821 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
822
823 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
824
825
826
827 ==== 3.4.2.3 Poll an uplink ====
828
829
830 * (% style="color:#037691" %)**AT Command:**
831
832 There is no AT Command to poll uplink
833
834
835 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
836
837 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
838
839
840 **Example**: 0x08FF, ask device to send an Uplink
841
842
843
844 ==== 3.4.2.4 Enable Trigger Mode ====
845
846
847 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
848
849 * (% style="color:#037691" %)**AT Command:**
850
851 (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
852
853 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
854
855 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
856
857
858 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
859
860 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
861
862
863
864 ==== 3.4.2.5 Poll trigger settings ====
865
866
867 Poll trigger settings,
868
869 * (% style="color:#037691" %)**AT Command:**
870
871 There is no AT Command for this feature.
872
873
874 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
875
876 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
877
878
879
880 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
881
882
883 Enable Disable DI1/DI2/DI2 as trigger,
884
885 * (% style="color:#037691" %)**AT Command:**
886
887 (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
888
889
890 **Example:**
891
892 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
893
894 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
895
896 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
897
898
899
900 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
901
902
903 Set DI1 or DI3(for LT-33222-L) trigger.
904
905 * (% style="color:#037691" %)**AT Command:**
906
907 (% style="color:blue" %)**AT+TRIG1=a,b**
908
909 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
910
911 (% style="color:red" %)**b :** (%%)delay timing.
912
913
914 **Example:**
915
916 AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
917
918
919 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
920
921 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
922
923
924
925 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
926
927
928 Set DI2 trigger.
929
930 * (% style="color:#037691" %)**AT Command:**
931
932 (% style="color:blue" %)**AT+TRIG2=a,b**
933
934 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
935
936 (% style="color:red" %)**b :** (%%)delay timing.
937
938
939 **Example:**
940
941 AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
942
943
944 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
945
946 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
947
948
949
950 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
951
952
953 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
954
955 * (% style="color:#037691" %)**AT Command**
956
957 (% style="color:blue" %)**AT+ACLIM**
958
959
960 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
961
962 (% 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"]]
963
964
965
966 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
967
968
969 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
970
971 * (% style="color:#037691" %)**AT Command**
972
973 (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
974
975
976 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
977
978 (% 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"]]
979
980
981
982 ==== 3.4.2.11 Trigger – Set minimum interval ====
983
984
985 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
986
987 * (% style="color:#037691" %)**AT Command**
988
989 (% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
990
991
992 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
993
994 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
995
996 (((
997
998
999 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
1000 )))
1001
1002
1003
1004 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1005
1006
1007 * (% style="color:#037691" %)**AT Command**
1008
1009 There is no AT Command to control Digital Output
1010
1011
1012 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1013 * (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1014
1015 (((
1016 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1017 )))
1018
1019 (((
1020 01: Low,  00: High ,  11: No action
1021 )))
1022
1023 [[image:image-20220524092754-5.png]]
1024
1025 (((
1026 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1027 )))
1028
1029 (((
1030 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1031 )))
1032
1033
1034
1035 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1036
1037
1038 * (% style="color:#037691" %)**AT Command**
1039
1040 There is no AT Command to control Digital Output
1041
1042
1043 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1044
1045 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1046
1047
1048 This is to control the digital output time of DO pin. Include four bytes:
1049
1050 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1051
1052 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1053
1054 01: DO pins will change back to original state after timeout.
1055
1056 00: DO pins will change to an inverter state after timeout 
1057
1058
1059 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1060
1061 [[image:image-20220524093238-6.png]]
1062
1063
1064 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1065
1066 [[image:image-20220524093328-7.png]]
1067
1068
1069 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1070
1071 [[image:image-20220524093351-8.png]]
1072
1073
1074 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
1075
1076 Latching time. Unit: ms
1077
1078
1079 (% style="color:red" %)**Note: **
1080
1081 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1082
1083 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1084
1085
1086 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1087
1088
1089 **Example payload:**
1090
1091 **~1. A9 01 01 01 01 07 D0**
1092
1093 DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
1094
1095 **2. A9 01 00 01 11 07 D0**
1096
1097 DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
1098
1099 **3. A9 00 00 00 00 07 D0**
1100
1101 DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
1102
1103 **4. A9 00 11 01 00 07 D0**
1104
1105 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
1106
1107
1108
1109 ==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1110
1111
1112 * (% style="color:#037691" %)**AT Command:**
1113
1114 There is no AT Command to control Relay Output
1115
1116
1117 * (% style="color:#037691" %)**Downlink Payload (prefix 0x03):**
1118
1119 (% style="color:blue" %)**0x03 aa bb     ** (%%)~/~/ Set RO1/RO2 output
1120
1121
1122 (((
1123 If payload = 0x030100, it means set RO1 to close and RO2 to open.
1124 )))
1125
1126 (((
1127 01: Close ,  00: Open , 11: No action
1128 )))
1129
1130 (((
1131 [[image:image-20220524093724-9.png]]
1132 )))
1133
1134 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1135
1136
1137
1138 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1139
1140
1141 * (% style="color:#037691" %)**AT Command:**
1142
1143 There is no AT Command to control Relay Output
1144
1145
1146 * (% style="color:#037691" %)**Downlink Payload (prefix 0x05):**
1147
1148 (% style="color:blue" %)**0x05 aa bb cc dd     ** (%%)~/~/ Set RO1/RO2 relay with time control
1149
1150
1151 This is to control the relay output time of relay. Include four bytes:
1152
1153 (% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
1154
1155 (% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
1156
1157 01: Relays will change back to original state after timeout.
1158
1159 00: Relays will change to an inverter state after timeout
1160
1161
1162 (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1163
1164 [[image:image-20221008095908-1.png||height="364" width="564"]]
1165
1166
1167 (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1168
1169
1170 (% style="color:red" %)**Note:**
1171
1172 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1173
1174 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1175
1176
1177 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1178
1179
1180 **Example payload:**
1181
1182 **~1. 05 01 11 07 D0**
1183
1184 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1185
1186 **2. 05 01 10 07 D0**
1187
1188 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1189
1190 **3. 05 00 01 07 D0**
1191
1192 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1193
1194 **4. 05 00 00 07 D0**
1195
1196 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1197
1198
1199
1200 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1201
1202
1203 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1204
1205 * (% style="color:#037691" %)**AT Command:**
1206
1207 (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1208
1209
1210 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1211
1212 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1213
1214
1215
1216 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1217
1218
1219 * (% style="color:#037691" %)**AT Command:**
1220
1221 (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1222
1223 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1224
1225 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1226
1227
1228 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1229
1230 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1231
1232
1233
1234 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1235
1236
1237 Clear counting for counting mode
1238
1239 * (% style="color:#037691" %)**AT Command:**
1240
1241 (% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1242
1243
1244 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1245
1246 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1247
1248
1249
1250 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1251
1252
1253 * (% style="color:#037691" %)**AT Command:**
1254
1255 (% 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)
1256
1257
1258 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1259
1260 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1261
1262 (((
1263 range: aa bb cc:0 to 16777215,  (unit:second)
1264 )))
1265
1266
1267
1268 ==== 3.4.2.20 Reset save RO DO state ====
1269
1270
1271 * (% style="color:#037691" %)**AT Command:**
1272
1273 (% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1274
1275 (% 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.
1276
1277
1278 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1279
1280 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1281
1282
1283
1284 ==== 3.4.2.21 Encrypted payload ====
1285
1286
1287 * (% style="color:#037691" %)**AT Command:**
1288
1289 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1290
1291 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1292
1293
1294
1295 ==== 3.4.2.22 Get sensor value ====
1296
1297
1298 * (% style="color:#037691" %)**AT Command:**
1299
1300 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1301
1302 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1303
1304
1305
1306 ==== 3.4.2.23 Resets the downlink packet count ====
1307
1308
1309 * (% style="color:#037691" %)**AT Command:**
1310
1311 (% 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)
1312
1313 (% 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.
1314
1315
1316
1317 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1318
1319
1320 * (% style="color:#037691" %)**AT Command:**
1321
1322 (% 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)
1323
1324 (% 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.
1325
1326
1327 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1328
1329 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1330
1331
1332
1333 ==== 3.4.2.25 Copy downlink to uplink ====
1334
1335
1336 * (% style="color:#037691" %)**AT Command**(%%)**:**
1337
1338 (% 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.
1339
1340 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.
1341
1342
1343 [[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"]]
1344
1345 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1346
1347
1348
1349 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]
1350
1351 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1352
1353
1354
1355 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1356
1357
1358 * (((
1359 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1360
1361 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1362
1363
1364 )))
1365
1366 **Example：**
1367
1368 [[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"]]
1369
1370
1371 == 3.5 Integrate with Mydevice ==
1372
1373
1374 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:
1375
1376 (((
1377 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1378 )))
1379
1380 (((
1381 (% 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:
1382
1383
1384 )))
1385
1386 [[image:image-20220719105525-1.png||height="377" width="677"]]
1387
1388
1389
1390 [[image:image-20220719110247-2.png||height="388" width="683"]]
1391
1392
1393 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1394
1395 (% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1396
1397 Search under The things network
1398
1399 [[image:1653356838789-523.png||height="337" width="740"]]
1400
1401
1402
1403 After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1404
1405 [[image:image-20220524094909-1.png||height="335" width="729"]]
1406
1407
1408 [[image:image-20220524094909-2.png||height="337" width="729"]]
1409
1410
1411 [[image:image-20220524094909-3.png||height="338" width="727"]]
1412
1413
1414 [[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1415
1416
1417 [[image:image-20220524094909-5.png||height="341" width="734"]]
1418
1419
1420 == 3.6 Interface Detail ==
1421
1422 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1423
1424
1425 Support NPN Type sensor
1426
1427 [[image:1653356991268-289.png]]
1428
1429
1430 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1431
1432
1433 (((
1434 The DI port of LT-22222-L can support NPN or PNP output sensor.
1435 )))
1436
1437 (((
1438 (((
1439 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.
1440
1441
1442 )))
1443 )))
1444
1445 [[image:1653357170703-587.png]]
1446
1447 (((
1448 (((
1449 When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1450 )))
1451 )))
1452
1453 (((
1454
1455 )))
1456
1457 (((
1458 (% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1459 )))
1460
1461 (((
1462 This type of sensor will output a low signal GND when active.
1463 )))
1464
1465 * (((
1466 Connect sensor's output to DI1-
1467 )))
1468 * (((
1469 Connect sensor's VCC to DI1+.
1470 )))
1471
1472 (((
1473 So when sensor active, the current between NEC2501 pin1 and pin2 is：
1474 )))
1475
1476 (((
1477 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1478 )))
1479
1480 (((
1481 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.
1482 )))
1483
1484 (((
1485
1486 )))
1487
1488 (((
1489 (% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1490 )))
1491
1492 (((
1493 This type of sensor will output a high signal (example 24v) when active.
1494 )))
1495
1496 * (((
1497 Connect sensor's output to DI1+
1498 )))
1499 * (((
1500 Connect sensor's GND DI1-.
1501 )))
1502
1503 (((
1504 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1505 )))
1506
1507 (((
1508 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1509 )))
1510
1511 (((
1512 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.
1513 )))
1514
1515 (((
1516
1517 )))
1518
1519 (((
1520 (% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1521 )))
1522
1523 (((
1524 Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1525 )))
1526
1527 * (((
1528 Connect sensor's output to DI1+ with a serial 50K resistor
1529 )))
1530 * (((
1531 Connect sensor's GND DI1-.
1532 )))
1533
1534 (((
1535 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1536 )))
1537
1538 (((
1539 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1540 )))
1541
1542 (((
1543 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.
1544 )))
1545
1546
1547 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1548
1549
1550 (% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1551
1552 (% style="color:red" %)**Note: DO pins go to float when device is power off.**
1553
1554 [[image:1653357531600-905.png]]
1555
1556
1557 === 3.6.4 Analog Input Interface ===
1558
1559
1560 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:
1561
1562
1563 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1564
1565 [[image:1653357592296-182.png]]
1566
1567 Example to connect a 4~~20mA sensor
1568
1569 We take the wind speed sensor as an example for reference only.
1570
1571
1572 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1573
1574 (% style="color:red" %)**Red:  12~~24v**
1575
1576 (% style="color:#ffc000" %)**Yellow:  4~~20mA**
1577
1578 **Black:  GND**
1579
1580
1581 **Connection diagram:**
1582
1583 [[image:1653357640609-758.png]]
1584
1585 [[image:1653357648330-671.png||height="155" width="733"]]
1586
1587
1588 === 3.6.5 Relay Output ===
1589
1590
1591 (((
1592 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:
1593
1594 **Note**: RO pins go to Open(NO) when device is power off.
1595 )))
1596
1597 [[image:image-20220524100215-9.png]]
1598
1599
1600 [[image:image-20220524100215-10.png||height="382" width="723"]]
1601
1602
1603 == 3.7 LEDs Indicators ==
1604
1605
1606 [[image:image-20220524100748-11.png]]
1607
1608
1609 = 4. Use AT Command =
1610
1611 == 4.1 Access AT Command ==
1612
1613
1614 (((
1615 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.
1616 )))
1617
1618 (((
1619
1620 )))
1621
1622 [[image:1653358238933-385.png]]
1623
1624
1625 (((
1626 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:
1627 )))
1628
1629 [[image:1653358355238-883.png]]
1630
1631
1632 (((
1633 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/]]
1634 )))
1635
1636 (((
1637 AT+<CMD>?        : Help on <CMD>
1638 )))
1639
1640 (((
1641 AT+<CMD>         : Run <CMD>
1642 )))
1643
1644 (((
1645 AT+<CMD>=<value> : Set the value
1646 )))
1647
1648 (((
1649 AT+<CMD>=?       :  Get the value
1650 )))
1651
1652 (((
1653 ATZ: Trig a reset of the MCU
1654 )))
1655
1656 (((
1657 AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1658 )))
1659
1660 (((
1661 AT+DEUI: Get or Set the Device EUI
1662 )))
1663
1664 (((
1665 AT+DADDR: Get or Set the Device Address
1666 )))
1667
1668 (((
1669 AT+APPKEY: Get or Set the Application Key
1670 )))
1671
1672 (((
1673 AT+NWKSKEY: Get or Set the Network Session Key
1674 )))
1675
1676 (((
1677 AT+APPSKEY:  Get or Set the Application Session Key
1678 )))
1679
1680 (((
1681 AT+APPEUI:  Get or Set the Application EUI
1682 )))
1683
1684 (((
1685 AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1686 )))
1687
1688 (((
1689 AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1690 )))
1691
1692 (((
1693 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1694 )))
1695
1696 (((
1697 AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1698 )))
1699
1700 (((
1701 AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1702 )))
1703
1704 (((
1705 AT+RX2FQ: Get or Set the Rx2 window frequency
1706 )))
1707
1708 (((
1709 AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1710 )))
1711
1712 (((
1713 AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1714 )))
1715
1716 (((
1717 AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1718 )))
1719
1720 (((
1721 AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1722 )))
1723
1724 (((
1725 AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1726 )))
1727
1728 (((
1729 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1730 )))
1731
1732 (((
1733 AT+NWKID: Get or Set the Network ID
1734 )))
1735
1736 (((
1737 AT+FCU: Get or Set the Frame Counter Uplink
1738 )))
1739
1740 (((
1741 AT+FCD: Get or Set the Frame Counter Downlink
1742 )))
1743
1744 (((
1745 AT+CLASS: Get or Set the Device Class
1746 )))
1747
1748 (((
1749 AT+JOIN: Join network
1750 )))
1751
1752 (((
1753 AT+NJS: Get OTAA Join Status
1754 )))
1755
1756 (((
1757 AT+SENDB: Send hexadecimal data along with the application port
1758 )))
1759
1760 (((
1761 AT+SEND: Send text data along with the application port
1762 )))
1763
1764 (((
1765 AT+RECVB: Print last received data in binary format (with hexadecimal values)
1766 )))
1767
1768 (((
1769 AT+RECV: Print last received data in raw format
1770 )))
1771
1772 (((
1773 AT+VER:  Get current image version and Frequency Band
1774 )))
1775
1776 (((
1777 AT+CFM: Get or Set the confirmation mode (0-1)
1778 )))
1779
1780 (((
1781 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1782 )))
1783
1784 (((
1785 AT+SNR: Get the SNR of the last received packet
1786 )))
1787
1788 (((
1789 AT+RSSI: Get the RSSI of the last received packet
1790 )))
1791
1792 (((
1793 AT+TDC: Get or set the application data transmission interval in ms
1794 )))
1795
1796 (((
1797 AT+PORT: Get or set the application port
1798 )))
1799
1800 (((
1801 AT+DISAT: Disable AT commands
1802 )))
1803
1804 (((
1805 AT+PWORD: Set password, max 9 digits
1806 )))
1807
1808 (((
1809 AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1810 )))
1811
1812 (((
1813 AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1814 )))
1815
1816 (((
1817 AT+CFG: Print all settings
1818 )))
1819
1820
1821 == 4.2 Common AT Command Sequence ==
1822
1823 === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1824
1825 (((
1826
1827
1828 (((
1829 (% style="color:blue" %)**If device has not joined network yet:**
1830 )))
1831 )))
1832
1833 (((
1834 (% style="background-color:#dcdcdc" %)**123456**
1835 )))
1836
1837 (((
1838 (% style="background-color:#dcdcdc" %)**AT+FDR**
1839 )))
1840
1841 (((
1842 (% style="background-color:#dcdcdc" %)**123456**
1843 )))
1844
1845 (((
1846 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1847 )))
1848
1849 (((
1850 (% style="background-color:#dcdcdc" %)**ATZ**
1851 )))
1852
1853
1854 (((
1855 (% style="color:blue" %)**If device already joined network:**
1856 )))
1857
1858 (((
1859 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1860 )))
1861
1862 (((
1863 (% style="background-color:#dcdcdc" %)**ATZ**
1864 )))
1865
1866
1867 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1868
1869 (((
1870
1871
1872 (((
1873 (% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1874 )))
1875 )))
1876
1877 (((
1878 (% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
1879 )))
1880
1881 (((
1882 (% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1883 )))
1884
1885 (((
1886 (% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
1887 )))
1888
1889 (((
1890 (% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
1891 )))
1892
1893 (((
1894 (% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
1895 )))
1896
1897 (((
1898 (% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
1899 )))
1900
1901 (((
1902 (% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
1903 )))
1904
1905 (((
1906 (% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
1907 )))
1908
1909 (((
1910 (% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
1911 )))
1912
1913 (((
1914 (% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
1915 )))
1916
1917 (((
1918 (% 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.
1919 )))
1920
1921 (((
1922 (% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
1923
1924
1925 )))
1926
1927 (((
1928 (% style="color:red" %)**Note:**
1929 )))
1930
1931 (((
1932 **~1. Make sure the device is set to ABP mode in the IoT Server.**
1933
1934 **2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
1935
1936 **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?
1937 dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1938
1939 **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.**
1940
1941
1942 )))
1943
1944 (((
1945 [[image:1653359097980-169.png||height="188" width="729"]]
1946 )))
1947
1948 (((
1949
1950 )))
1951
1952 === 4.2.3 Change to Class A ===
1953
1954
1955 (((
1956 (% style="color:blue" %)**If sensor JOINED:**
1957
1958 (% style="background-color:#dcdcdc" %)**AT+CLASS=A
1959 ATZ**
1960 )))
1961
1962
1963 = 5. Case Study =
1964
1965 == 5.1 Counting how many objects pass in Flow Line ==
1966
1967
1968 Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
1969
1970
1971 = 6. FAQ =
1972
1973 == 6.1 How to upgrade the image? ==
1974
1975
1976 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1977
1978 * Support new features
1979 * For bug fix
1980 * Change LoRaWAN bands.
1981
1982 Below shows the hardware connection for how to upload an image to the LT:
1983
1984 [[image:1653359603330-121.png]]
1985
1986
1987 (((
1988 (% 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]].
1989 (% 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]].
1990 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
1991
1992
1993 (((
1994 (% style="color:blue" %)**For LT-22222-L**(%%):
1995 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.
1996 )))
1997
1998
1999 )))
2000
2001 [[image:image-20220524103407-12.png]]
2002
2003
2004 [[image:image-20220524103429-13.png]]
2005
2006
2007 [[image:image-20220524104033-15.png]]
2008
2009
2010 (% 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:
2011
2012
2013 [[image:1653360054704-518.png||height="186" width="745"]]
2014
2015
2016 (((
2017 (((
2018 == 6.2 How to change the LoRa Frequency Bands/Region? ==
2019
2020
2021 )))
2022 )))
2023
2024 (((
2025 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2026 )))
2027
2028 (((
2029
2030
2031 == 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2032
2033
2034 )))
2035
2036 (((
2037 (((
2038 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2039 )))
2040 )))
2041
2042 (((
2043 (((
2044 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2045
2046
2047 )))
2048 )))
2049
2050 (((
2051 (% 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.
2052
2053
2054 )))
2055
2056 (((
2057 [[image:1653360231087-571.png||height="401" width="727"]]
2058
2059
2060 )))
2061
2062 (((
2063 (% 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.**
2064 )))
2065
2066
2067
2068 (((
2069 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2070
2071
2072 )))
2073
2074 (((
2075 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2076 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2077 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2078 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2079 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2080 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2081 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2082 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2083 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2084 )))
2085
2086
2087 (((
2088 As shown in below:
2089 )))
2090
2091 [[image:1653360498588-932.png||height="485" width="726"]]
2092
2093
2094 == 6.4 Can I see counting event in Serial? ==
2095
2096
2097 (((
2098 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.
2099
2100
2101 == 6.5 Can i use point to point communication for LT-22222-L? ==
2102
2103
2104 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]].
2105
2106
2107 )))
2108
2109 (((
2110 == 6.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2111
2112
2113 If the device is not shut down, but directly powered off.
2114
2115 It will default that this is a power-off state.
2116
2117 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2118
2119 After restart, the status before power failure will be read from flash.
2120
2121
2122 == 6.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2123
2124
2125 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2126
2127
2128 [[image:image-20221006170630-1.png||height="610" width="945"]]
2129
2130
2131 == 6.8 Can LT22222-L save RO state? ==
2132
2133
2134 Firmware version needs to be no less than 1.6.0.
2135
2136
2137 = 7. Trouble Shooting =
2138 )))
2139
2140 (((
2141 (((
2142 == 7.1 Downlink doesn't work, how to solve it? ==
2143
2144
2145 )))
2146 )))
2147
2148 (((
2149 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2150 )))
2151
2152 (((
2153
2154
2155 == 7.2 Have trouble to upload image. ==
2156
2157
2158 )))
2159
2160 (((
2161 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2162 )))
2163
2164 (((
2165
2166
2167 == 7.3 Why I can't join TTN in US915 /AU915 bands? ==
2168
2169
2170 )))
2171
2172 (((
2173 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2174 )))
2175
2176
2177 = 8. Order Info =
2178
2179
2180 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2181
2182 (% style="color:#4f81bd" %)**XXX:**
2183
2184 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2185 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2186 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2187 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2188 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2189 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2190 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2191 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2192 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2193
2194
2195
2196 = 9. Packing Info =
2197
2198
2199 **Package Includes**:
2200
2201 * LT-22222-L I/O Controller x 1
2202 * Stick Antenna for LoRa RF part x 1
2203 * Bracket for controller x1
2204 * Program cable x 1
2205
2206 **Dimension and weight**:
2207
2208 * Device Size: 13.5 x 7 x 3 cm
2209 * Device Weight: 105g
2210 * Package Size / pcs : 14.5 x 8 x 5 cm
2211 * Weight / pcs : 170g
2212
2213
2214
2215 = 10. Support =
2216
2217
2218 * (((
2219 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.
2220 )))
2221 * (((
2222 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]]
2223
2224
2225
2226 )))
2227
2228 = 11. Reference​​​​​ =
2229
2230
2231 * 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]]
2232 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2233 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2234
2235

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