Version 115.2 by Xiaoling on 2023/04/25 17:36
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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
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 === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
325
326
327 (((
328 The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
329 )))
330
331 [[image:image-20220523174024-3.png]]
332
333 (((
334
335
336 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
337 )))
338
339 [[image:image-20220523174254-4.png]]
340
341 * RO is for relay. ROx=1 : close，ROx=0 always open.
342 * DI is for digital input. DIx=1: high or float, DIx=0: low.
343 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
344
345 (% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
346
347 For example if payload is: [[image:image-20220523175847-2.png]]
348
349
350 **The value for the interface is:  **
351
352 AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
353
354 AVI2 channel voltage is 0x04AC/1000=1.196V
355
356 ACI1 channel current is 0x1310/1000=4.880mA
357
358 ACI2 channel current is 0x1300/1000=4.864mA
359
360 The last byte 0xAA= 10101010(B) means
361
362 * [1] RO1 relay channel is close and the RO1 LED is ON.
363 * [0] RO2 relay channel is open and RO2 LED is OFF;
364
365 **LT22222-L:**
366
367 * [1] DI2 channel is high input and DI2 LED is ON;
368 * [0] DI1 channel is low input;
369
370 * [0] DO3 channel output state
371 ** DO3 is float in case no load between DO3 and V+.;
372 ** DO3 is high in case there is load between DO3 and V+.
373 ** DO3 LED is off in both case
374 * [1] DO2 channel output is low and DO2 LED is ON.
375 * [0] DO1 channel output state
376 ** DO1 is float in case no load between DO1 and V+.;
377 ** DO1 is high in case there is load between DO1 and V+.
378 ** DO1 LED is off in both case
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 === 3.4.1 Common Commands ===
779
780
781 (((
782 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]]
783 )))
784
785
786 === 3.4.2 Sensor related commands ===
787
788 ==== 3.4.2.1 Set Transmit Interval ====
789
790
791 Set device uplink interval.
792
793 * (% style="color:#037691" %)**AT Command:**
794
795 (% style="color:blue" %)**AT+TDC=N **
796
797
798 **Example: **AT+TDC=30000. Means set interval to 30 seconds
799
800
801 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
802
803 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
804
805
806
807 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
808
809
810 Set work mode.
811
812 * (% style="color:#037691" %)**AT Command:**
813
814 (% style="color:blue" %)**AT+MOD=N  **
815
816
817 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
818
819
820 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
821
822 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
823
824
825
826 ==== 3.4.2.3 Poll an uplink ====
827
828
829 * (% style="color:#037691" %)**AT Command:**
830
831 There is no AT Command to poll uplink
832
833
834 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
835
836 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
837
838
839 **Example**: 0x08FF, ask device to send an Uplink
840
841
842
843 ==== 3.4.2.4 Enable Trigger Mode ====
844
845
846 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
847
848 * (% style="color:#037691" %)**AT Command:**
849
850 (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
851
852 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
853
854 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
855
856
857 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
858
859 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
860
861
862
863 ==== 3.4.2.5 Poll trigger settings ====
864
865
866 Poll trigger settings,
867
868 * (% style="color:#037691" %)**AT Command:**
869
870 There is no AT Command for this feature.
871
872
873 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
874
875 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
876
877
878
879 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
880
881
882 Enable Disable DI1/DI2/DI2 as trigger,
883
884 * (% style="color:#037691" %)**AT Command:**
885
886 (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
887
888
889 **Example:**
890
891 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
892
893 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
894
895 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
896
897
898
899 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
900
901
902 Set DI1 or DI3(for LT-33222-L) trigger.
903
904 * (% style="color:#037691" %)**AT Command:**
905
906 (% style="color:blue" %)**AT+TRIG1=a,b**
907
908 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
909
910 (% style="color:red" %)**b :** (%%)delay timing.
911
912
913 **Example:**
914
915 AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
916
917
918 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
919
920 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
921
922
923
924 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
925
926
927 Set DI2 trigger.
928
929 * (% style="color:#037691" %)**AT Command:**
930
931 (% style="color:blue" %)**AT+TRIG2=a,b**
932
933 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
934
935 (% style="color:red" %)**b :** (%%)delay timing.
936
937
938 **Example:**
939
940 AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
941
942
943 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
944
945 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
946
947
948
949 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
950
951
952 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
953
954 * (% style="color:#037691" %)**AT Command**
955
956 (% style="color:blue" %)**AT+ACLIM**
957
958
959 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
960
961 (% 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"]]
962
963
964
965 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
966
967
968 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
969
970 * (% style="color:#037691" %)**AT Command**
971
972 (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
973
974
975 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
976
977 (% 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"]]
978
979
980
981 ==== 3.4.2.11 Trigger – Set minimum interval ====
982
983
984 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
985
986 * (% style="color:#037691" %)**AT Command**
987
988 (% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
989
990
991 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
992
993 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
994
995 (((
996
997
998 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
999 )))
1000
1001
1002
1003 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1004
1005
1006 * (% style="color:#037691" %)**AT Command**
1007
1008 There is no AT Command to control Digital Output
1009
1010
1011 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1012 * (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1013
1014 (((
1015 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1016 )))
1017
1018 (((
1019 01: Low,  00: High ,  11: No action
1020 )))
1021
1022 [[image:image-20220524092754-5.png]]
1023
1024 (((
1025 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1026 )))
1027
1028 (((
1029 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1030 )))
1031
1032
1033
1034 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1035
1036
1037 * (% style="color:#037691" %)**AT Command**
1038
1039 There is no AT Command to control Digital Output
1040
1041
1042 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1043
1044 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1045
1046
1047 This is to control the digital output time of DO pin. Include four bytes:
1048
1049 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1050
1051 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1052
1053 01: DO pins will change back to original state after timeout.
1054
1055 00: DO pins will change to an inverter state after timeout 
1056
1057
1058 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1059
1060 [[image:image-20220524093238-6.png]]
1061
1062
1063 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1064
1065 [[image:image-20220524093328-7.png]]
1066
1067
1068 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1069
1070 [[image:image-20220524093351-8.png]]
1071
1072
1073 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
1074
1075 Latching time. Unit: ms
1076
1077
1078 (% style="color:red" %)**Note: **
1079
1080 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1081
1082 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1083
1084
1085 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1086
1087
1088 **Example payload:**
1089
1090 **~1. A9 01 01 01 01 07 D0**
1091
1092 DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
1093
1094 **2. A9 01 00 01 11 07 D0**
1095
1096 DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
1097
1098 **3. A9 00 00 00 00 07 D0**
1099
1100 DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
1101
1102 **4. A9 00 11 01 00 07 D0**
1103
1104 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
1105
1106
1107
1108 ==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1109
1110
1111 * (% style="color:#037691" %)**AT Command:**
1112
1113 There is no AT Command to control Relay Output
1114
1115
1116 * (% style="color:#037691" %)**Downlink Payload (prefix 0x03):**
1117
1118 (% style="color:blue" %)**0x03 aa bb     ** (%%)~/~/ Set RO1/RO2 output
1119
1120
1121 (((
1122 If payload = 0x030100, it means set RO1 to close and RO2 to open.
1123 )))
1124
1125 (((
1126 01: Close ,  00: Open , 11: No action
1127 )))
1128
1129 (((
1130 [[image:image-20220524093724-9.png]]
1131 )))
1132
1133 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1134
1135
1136
1137 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1138
1139
1140 * (% style="color:#037691" %)**AT Command:**
1141
1142 There is no AT Command to control Relay Output
1143
1144
1145 * (% style="color:#037691" %)**Downlink Payload (prefix 0x05):**
1146
1147 (% style="color:blue" %)**0x05 aa bb cc dd     ** (%%)~/~/ Set RO1/RO2 relay with time control
1148
1149
1150 This is to control the relay output time of relay. Include four bytes:
1151
1152 (% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
1153
1154 (% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
1155
1156 01: Relays will change back to original state after timeout.
1157
1158 00: Relays will change to an inverter state after timeout
1159
1160
1161 (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1162
1163 [[image:image-20221008095908-1.png||height="364" width="564"]]
1164
1165
1166 (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1167
1168
1169 (% style="color:red" %)**Note:**
1170
1171 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1172
1173 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1174
1175
1176 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1177
1178
1179 **Example payload:**
1180
1181 **~1. 05 01 11 07 D0**
1182
1183 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1184
1185 **2. 05 01 10 07 D0**
1186
1187 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1188
1189 **3. 05 00 01 07 D0**
1190
1191 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1192
1193 **4. 05 00 00 07 D0**
1194
1195 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1196
1197
1198
1199 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1200
1201
1202 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1203
1204 * (% style="color:#037691" %)**AT Command:**
1205
1206 (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1207
1208
1209 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1210
1211 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1212
1213
1214
1215 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1216
1217
1218 * (% style="color:#037691" %)**AT Command:**
1219
1220 (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1221
1222 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1223
1224 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1225
1226
1227 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1228
1229 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1230
1231
1232
1233 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1234
1235
1236 Clear counting for counting mode
1237
1238 * (% style="color:#037691" %)**AT Command:**
1239
1240 (% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1241
1242
1243 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1244
1245 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1246
1247
1248
1249 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1250
1251
1252 * (% style="color:#037691" %)**AT Command:**
1253
1254 (% 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)
1255
1256
1257 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1258
1259 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1260
1261 (((
1262 range: aa bb cc:0 to 16777215,  (unit:second)
1263 )))
1264
1265
1266
1267 ==== 3.4.2.20 Reset save RO DO state ====
1268
1269
1270 * (% style="color:#037691" %)**AT Command:**
1271
1272 (% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1273
1274 (% 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.
1275
1276
1277 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1278
1279 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1280
1281
1282
1283 ==== 3.4.2.21 Encrypted payload ====
1284
1285
1286 * (% style="color:#037691" %)**AT Command:**
1287
1288 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1289
1290 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1291
1292
1293
1294 ==== 3.4.2.22 Get sensor value ====
1295
1296
1297 * (% style="color:#037691" %)**AT Command:**
1298
1299 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1300
1301 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1302
1303
1304
1305 ==== 3.4.2.23 Resets the downlink packet count ====
1306
1307
1308 * (% style="color:#037691" %)**AT Command:**
1309
1310 (% 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)
1311
1312 (% 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.
1313
1314
1315
1316 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1317
1318
1319 * (% style="color:#037691" %)**AT Command:**
1320
1321 (% 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)
1322
1323 (% 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.
1324
1325
1326 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1327
1328 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1329
1330
1331
1332 ==== 3.4.2.25 Copy downlink to uplink ====
1333
1334
1335 * (% style="color:#037691" %)**AT Command**(%%)**:**
1336
1337 (% 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.
1338
1339 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.
1340
1341
1342 [[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"]]
1343
1344 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1345
1346
1347
1348 [[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"]]
1349
1350 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1351
1352
1353
1354 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1355
1356
1357 * (((
1358 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1359
1360 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1361
1362
1363 )))
1364
1365 **Example：**
1366
1367 [[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"]]
1368
1369
1370 == 3.5 Integrate with Mydevice ==
1371
1372
1373 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:
1374
1375 (((
1376 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1377 )))
1378
1379 (((
1380 (% 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:
1381
1382
1383 )))
1384
1385 [[image:image-20220719105525-1.png||height="377" width="677"]]
1386
1387
1388
1389 [[image:image-20220719110247-2.png||height="388" width="683"]]
1390
1391
1392 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1393
1394 (% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1395
1396 Search under The things network
1397
1398 [[image:1653356838789-523.png||height="337" width="740"]]
1399
1400
1401
1402 After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1403
1404 [[image:image-20220524094909-1.png||height="335" width="729"]]
1405
1406
1407 [[image:image-20220524094909-2.png||height="337" width="729"]]
1408
1409
1410 [[image:image-20220524094909-3.png||height="338" width="727"]]
1411
1412
1413 [[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1414
1415
1416 [[image:image-20220524094909-5.png||height="341" width="734"]]
1417
1418
1419 == 3.6 Interface Detail ==
1420
1421 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1422
1423
1424 Support NPN Type sensor
1425
1426 [[image:1653356991268-289.png]]
1427
1428
1429 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1430
1431
1432 (((
1433 The DI port of LT-22222-L can support NPN or PNP output sensor.
1434 )))
1435
1436 (((
1437 (((
1438 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.
1439
1440
1441 )))
1442 )))
1443
1444 [[image:1653357170703-587.png]]
1445
1446 (((
1447 (((
1448 When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1449 )))
1450 )))
1451
1452 (((
1453
1454 )))
1455
1456 (((
1457 (% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1458 )))
1459
1460 (((
1461 This type of sensor will output a low signal GND when active.
1462 )))
1463
1464 * (((
1465 Connect sensor's output to DI1-
1466 )))
1467 * (((
1468 Connect sensor's VCC to DI1+.
1469 )))
1470
1471 (((
1472 So when sensor active, the current between NEC2501 pin1 and pin2 is：
1473 )))
1474
1475 (((
1476 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1477 )))
1478
1479 (((
1480 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.
1481 )))
1482
1483 (((
1484
1485 )))
1486
1487 (((
1488 (% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1489 )))
1490
1491 (((
1492 This type of sensor will output a high signal (example 24v) when active.
1493 )))
1494
1495 * (((
1496 Connect sensor's output to DI1+
1497 )))
1498 * (((
1499 Connect sensor's GND DI1-.
1500 )))
1501
1502 (((
1503 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1504 )))
1505
1506 (((
1507 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1508 )))
1509
1510 (((
1511 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.
1512 )))
1513
1514 (((
1515
1516 )))
1517
1518 (((
1519 (% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1520 )))
1521
1522 (((
1523 Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1524 )))
1525
1526 * (((
1527 Connect sensor's output to DI1+ with a serial 50K resistor
1528 )))
1529 * (((
1530 Connect sensor's GND DI1-.
1531 )))
1532
1533 (((
1534 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1535 )))
1536
1537 (((
1538 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1539 )))
1540
1541 (((
1542 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.
1543 )))
1544
1545
1546 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1547
1548
1549 (% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1550
1551 (% style="color:red" %)**Note: DO pins go to float when device is power off.**
1552
1553 [[image:1653357531600-905.png]]
1554
1555
1556 === 3.6.4 Analog Input Interface ===
1557
1558
1559 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:
1560
1561
1562 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1563
1564 [[image:1653357592296-182.png]]
1565
1566 Example to connect a 4~~20mA sensor
1567
1568 We take the wind speed sensor as an example for reference only.
1569
1570
1571 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1572
1573 (% style="color:red" %)**Red:  12~~24v**
1574
1575 (% style="color:#ffc000" %)**Yellow:  4~~20mA**
1576
1577 **Black:  GND**
1578
1579
1580 **Connection diagram:**
1581
1582 [[image:1653357640609-758.png]]
1583
1584 [[image:1653357648330-671.png||height="155" width="733"]]
1585
1586
1587 === 3.6.5 Relay Output ===
1588
1589
1590 (((
1591 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:
1592
1593 **Note**: RO pins go to Open(NO) when device is power off.
1594 )))
1595
1596 [[image:image-20220524100215-9.png]]
1597
1598
1599 [[image:image-20220524100215-10.png||height="382" width="723"]]
1600
1601
1602 == 3.7 LEDs Indicators ==
1603
1604
1605 [[image:image-20220524100748-11.png]]
1606
1607
1608 = 4. Use AT Command =
1609
1610 == 4.1 Access AT Command ==
1611
1612
1613 (((
1614 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.
1615 )))
1616
1617 (((
1618
1619 )))
1620
1621 [[image:1653358238933-385.png]]
1622
1623
1624 (((
1625 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:
1626 )))
1627
1628 [[image:1653358355238-883.png]]
1629
1630
1631 (((
1632 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/]]
1633 )))
1634
1635 (((
1636 AT+<CMD>?        : Help on <CMD>
1637 )))
1638
1639 (((
1640 AT+<CMD>         : Run <CMD>
1641 )))
1642
1643 (((
1644 AT+<CMD>=<value> : Set the value
1645 )))
1646
1647 (((
1648 AT+<CMD>=?       :  Get the value
1649 )))
1650
1651 (((
1652 ATZ: Trig a reset of the MCU
1653 )))
1654
1655 (((
1656 AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1657 )))
1658
1659 (((
1660 AT+DEUI: Get or Set the Device EUI
1661 )))
1662
1663 (((
1664 AT+DADDR: Get or Set the Device Address
1665 )))
1666
1667 (((
1668 AT+APPKEY: Get or Set the Application Key
1669 )))
1670
1671 (((
1672 AT+NWKSKEY: Get or Set the Network Session Key
1673 )))
1674
1675 (((
1676 AT+APPSKEY:  Get or Set the Application Session Key
1677 )))
1678
1679 (((
1680 AT+APPEUI:  Get or Set the Application EUI
1681 )))
1682
1683 (((
1684 AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1685 )))
1686
1687 (((
1688 AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1689 )))
1690
1691 (((
1692 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1693 )))
1694
1695 (((
1696 AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1697 )))
1698
1699 (((
1700 AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1701 )))
1702
1703 (((
1704 AT+RX2FQ: Get or Set the Rx2 window frequency
1705 )))
1706
1707 (((
1708 AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1709 )))
1710
1711 (((
1712 AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1713 )))
1714
1715 (((
1716 AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1717 )))
1718
1719 (((
1720 AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1721 )))
1722
1723 (((
1724 AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1725 )))
1726
1727 (((
1728 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1729 )))
1730
1731 (((
1732 AT+NWKID: Get or Set the Network ID
1733 )))
1734
1735 (((
1736 AT+FCU: Get or Set the Frame Counter Uplink
1737 )))
1738
1739 (((
1740 AT+FCD: Get or Set the Frame Counter Downlink
1741 )))
1742
1743 (((
1744 AT+CLASS: Get or Set the Device Class
1745 )))
1746
1747 (((
1748 AT+JOIN: Join network
1749 )))
1750
1751 (((
1752 AT+NJS: Get OTAA Join Status
1753 )))
1754
1755 (((
1756 AT+SENDB: Send hexadecimal data along with the application port
1757 )))
1758
1759 (((
1760 AT+SEND: Send text data along with the application port
1761 )))
1762
1763 (((
1764 AT+RECVB: Print last received data in binary format (with hexadecimal values)
1765 )))
1766
1767 (((
1768 AT+RECV: Print last received data in raw format
1769 )))
1770
1771 (((
1772 AT+VER:  Get current image version and Frequency Band
1773 )))
1774
1775 (((
1776 AT+CFM: Get or Set the confirmation mode (0-1)
1777 )))
1778
1779 (((
1780 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1781 )))
1782
1783 (((
1784 AT+SNR: Get the SNR of the last received packet
1785 )))
1786
1787 (((
1788 AT+RSSI: Get the RSSI of the last received packet
1789 )))
1790
1791 (((
1792 AT+TDC: Get or set the application data transmission interval in ms
1793 )))
1794
1795 (((
1796 AT+PORT: Get or set the application port
1797 )))
1798
1799 (((
1800 AT+DISAT: Disable AT commands
1801 )))
1802
1803 (((
1804 AT+PWORD: Set password, max 9 digits
1805 )))
1806
1807 (((
1808 AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1809 )))
1810
1811 (((
1812 AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1813 )))
1814
1815 (((
1816 AT+CFG: Print all settings
1817 )))
1818
1819
1820 == 4.2 Common AT Command Sequence ==
1821
1822 === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1823
1824 (((
1825
1826
1827 (((
1828 (% style="color:blue" %)**If device has not joined network yet:**
1829 )))
1830 )))
1831
1832 (((
1833 (% style="background-color:#dcdcdc" %)**123456**
1834 )))
1835
1836 (((
1837 (% style="background-color:#dcdcdc" %)**AT+FDR**
1838 )))
1839
1840 (((
1841 (% style="background-color:#dcdcdc" %)**123456**
1842 )))
1843
1844 (((
1845 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1846 )))
1847
1848 (((
1849 (% style="background-color:#dcdcdc" %)**ATZ**
1850 )))
1851
1852
1853 (((
1854 (% style="color:blue" %)**If device already joined network:**
1855 )))
1856
1857 (((
1858 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1859 )))
1860
1861 (((
1862 (% style="background-color:#dcdcdc" %)**ATZ**
1863 )))
1864
1865
1866 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1867
1868 (((
1869
1870
1871 (((
1872 (% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1873 )))
1874 )))
1875
1876 (((
1877 (% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
1878 )))
1879
1880 (((
1881 (% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1882 )))
1883
1884 (((
1885 (% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
1886 )))
1887
1888 (((
1889 (% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
1890 )))
1891
1892 (((
1893 (% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
1894 )))
1895
1896 (((
1897 (% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
1898 )))
1899
1900 (((
1901 (% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
1902 )))
1903
1904 (((
1905 (% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
1906 )))
1907
1908 (((
1909 (% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
1910 )))
1911
1912 (((
1913 (% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
1914 )))
1915
1916 (((
1917 (% 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.
1918 )))
1919
1920 (((
1921 (% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
1922
1923
1924 )))
1925
1926 (((
1927 (% style="color:red" %)**Note:**
1928 )))
1929
1930 (((
1931 **~1. Make sure the device is set to ABP mode in the IoT Server.**
1932
1933 **2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
1934
1935 **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?
1936 dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1937
1938 **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.**
1939
1940
1941 )))
1942
1943 (((
1944 [[image:1653359097980-169.png||height="188" width="729"]]
1945 )))
1946
1947 (((
1948
1949 )))
1950
1951 === 4.2.3 Change to Class A ===
1952
1953
1954 (((
1955 (% style="color:blue" %)**If sensor JOINED:**
1956
1957 (% style="background-color:#dcdcdc" %)**AT+CLASS=A
1958 ATZ**
1959 )))
1960
1961
1962 = 5. Case Study =
1963
1964 == 5.1 Counting how many objects pass in Flow Line ==
1965
1966
1967 Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
1968
1969
1970 = 6. FAQ =
1971
1972 == 6.1 How to upgrade the image? ==
1973
1974
1975 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1976
1977 * Support new features
1978 * For bug fix
1979 * Change LoRaWAN bands.
1980
1981 Below shows the hardware connection for how to upload an image to the LT:
1982
1983 [[image:1653359603330-121.png]]
1984
1985
1986 (((
1987 (% 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]].
1988 (% 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]].
1989 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
1990
1991
1992 (((
1993 (% style="color:blue" %)**For LT-22222-L**(%%):
1994 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.
1995 )))
1996
1997
1998 )))
1999
2000 [[image:image-20220524103407-12.png]]
2001
2002
2003 [[image:image-20220524103429-13.png]]
2004
2005
2006 [[image:image-20220524104033-15.png]]
2007
2008
2009 (% 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:
2010
2011
2012 [[image:1653360054704-518.png||height="186" width="745"]]
2013
2014
2015 (((
2016 (((
2017 == 6.2 How to change the LoRa Frequency Bands/Region? ==
2018
2019
2020 )))
2021 )))
2022
2023 (((
2024 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2025 )))
2026
2027 (((
2028
2029
2030 == 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2031
2032
2033 )))
2034
2035 (((
2036 (((
2037 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2038 )))
2039 )))
2040
2041 (((
2042 (((
2043 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2044
2045
2046 )))
2047 )))
2048
2049 (((
2050 (% 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.
2051
2052
2053 )))
2054
2055 (((
2056 [[image:1653360231087-571.png||height="401" width="727"]]
2057
2058
2059 )))
2060
2061 (((
2062 (% 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.**
2063 )))
2064
2065
2066
2067 (((
2068 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2069
2070
2071 )))
2072
2073 (((
2074 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2075 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2076 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2077 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2078 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2079 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2080 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2081 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2082 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2083 )))
2084
2085
2086 (((
2087 As shown in below:
2088 )))
2089
2090 [[image:1653360498588-932.png||height="485" width="726"]]
2091
2092
2093 == 6.4 Can I see counting event in Serial? ==
2094
2095
2096 (((
2097 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.
2098
2099
2100 == 6.5 Can i use point to point communication for LT-22222-L? ==
2101
2102
2103 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]].
2104
2105
2106 )))
2107
2108 (((
2109 == 6.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2110
2111
2112 If the device is not shut down, but directly powered off.
2113
2114 It will default that this is a power-off state.
2115
2116 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2117
2118 After restart, the status before power failure will be read from flash.
2119
2120
2121 == 6.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2122
2123
2124 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2125
2126
2127 [[image:image-20221006170630-1.png||height="610" width="945"]]
2128
2129
2130 == 6.8 Can LT22222-L save RO state? ==
2131
2132
2133 Firmware version needs to be no less than 1.6.0.
2134
2135
2136 = 7. Trouble Shooting =
2137 )))
2138
2139 (((
2140 (((
2141 == 7.1 Downlink doesn't work, how to solve it? ==
2142
2143
2144 )))
2145 )))
2146
2147 (((
2148 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2149 )))
2150
2151 (((
2152
2153
2154 == 7.2 Have trouble to upload image. ==
2155
2156
2157 )))
2158
2159 (((
2160 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2161 )))
2162
2163 (((
2164
2165
2166 == 7.3 Why I can't join TTN in US915 /AU915 bands? ==
2167
2168
2169 )))
2170
2171 (((
2172 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2173 )))
2174
2175
2176 = 8. Order Info =
2177
2178
2179 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2180
2181 (% style="color:#4f81bd" %)**XXX:**
2182
2183 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2184 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2185 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2186 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2187 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2188 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2189 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2190 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2191 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2192
2193
2194
2195 = 9. Packing Info =
2196
2197
2198 **Package Includes**:
2199
2200 * LT-22222-L I/O Controller x 1
2201 * Stick Antenna for LoRa RF part x 1
2202 * Bracket for controller x1
2203 * Program cable x 1
2204
2205 **Dimension and weight**:
2206
2207 * Device Size: 13.5 x 7 x 3 cm
2208 * Device Weight: 105g
2209 * Package Size / pcs : 14.5 x 8 x 5 cm
2210 * Weight / pcs : 170g
2211
2212
2213
2214 = 10. Support =
2215
2216
2217 * (((
2218 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.
2219 )))
2220 * (((
2221 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]]
2222
2223
2224
2225 )))
2226
2227 = 11. Reference​​​​​ =
2228
2229
2230 * 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]]
2231 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2232 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2233
2234

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