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Version 113.2 by Xiaoling on 2023/04/24 11:51
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1 (% style="text-align:center" %)
2 [[image:image-20220523163353-1.jpeg||height="604" width="500"]]
3
4
5
6 **Table of Contents:**
7
8 {{toc/}}
9
10
11
12
13
14
15
16 = 1.Introduction =
17
18 == 1.1 What is LT Series I/O Controller ==
19
20 (((
21
22
23 (((
24 The Dragino (% style="color:blue" %)**LT series I/O Modules**(%%) are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as:** (% style="color:blue" %)analog current Input, analog voltage input(%%)**(% style="color:blue" %), **relay output**, **digital input**(%%) and (% style="color:blue" %)**digital output**(%%) etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
25 )))
26 )))
27
28 (((
29 The LT I/O Controllers allows the user to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, 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 == 1.5 Hardware Variants ==
208
209
210 (% border="1" style="background-color:#f2f2f2; width:500px" %)
211 |(% 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**
212 |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
213 (% style="text-align:center" %)
214 [[image:image-20230424115112-1.png||height="106" width="58"]]
215 )))|(% style="width:334px" %)(((
216 * 2 x Digital Input (Bi-direction)
217 * 2 x Digital Output
218 * 2 x Relay Output (5A@250VAC / 30VDC)
219 * 2 x 0~~20mA Analog Input (res:0.01mA)
220 * 2 x 0~~30V Analog Input (res:0.01v)
221 * 1 x Counting Port
222 )))
223
224 = 2. Power ON Device =
225
226
227 (((
228 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.
229 )))
230
231 (((
232 PWR will on when device is properly powered.
233
234
235 )))
236
237 [[image:1653297104069-180.png]]
238
239
240 = 3. Operation Mode =
241
242 == 3.1 How it works? ==
243
244
245 (((
246 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. 
247 )))
248
249 (((
250 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.
251 )))
252
253
254 == 3.2 Example to join LoRaWAN network ==
255
256
257 (((
258 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. 
259
260
261 )))
262
263 [[image:image-20220523172350-1.png||height="266" width="864"]]
264
265
266 (((
267 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:
268
269
270 )))
271
272 (((
273 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
274 )))
275
276 (((
277 Each LT is shipped with a sticker with the default device EUI as below:
278 )))
279
280 [[image:1653297924498-393.png]]
281
282
283 Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
284
285 **Add APP EUI in the application.**
286
287 [[image:1653297955910-247.png||height="321" width="716"]]
288
289
290 **Add APP KEY and DEV EUI**
291
292 [[image:1653298023685-319.png]]
293
294
295
296 (((
297 (% 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.
298
299
300 )))
301
302 [[image:1653298044601-602.png||height="405" width="709"]]
303
304
305 == 3.3 Uplink Payload ==
306
307
308 There are five working modes + one interrupt mode on LT for different type application:
309
310 * (% style="color:blue" %)**MOD1**(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
311 * (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO
312 * (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO
313 * (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
314 * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
315 * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
316
317 === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
318
319
320 (((
321 The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
322 )))
323
324 [[image:image-20220523174024-3.png]]
325
326 (((
327
328
329 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
330 )))
331
332 [[image:image-20220523174254-4.png]]
333
334 * RO is for relay. ROx=1 : close，ROx=0 always open.
335 * DI is for digital input. DIx=1: high or float, DIx=0: low.
336 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
337
338 (% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
339
340 For example if payload is: [[image:image-20220523175847-2.png]]
341
342
343 **The value for the interface is:  **
344
345 AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
346
347 AVI2 channel voltage is 0x04AC/1000=1.196V
348
349 ACI1 channel current is 0x1310/1000=4.880mA
350
351 ACI2 channel current is 0x1300/1000=4.864mA
352
353 The last byte 0xAA= 10101010(B) means
354
355 * [1] RO1 relay channel is close and the RO1 LED is ON.
356 * [0] RO2 relay channel is open and RO2 LED is OFF;
357
358 **LT22222-L:**
359
360 * [1] DI2 channel is high input and DI2 LED is ON;
361 * [0] DI1 channel is low input;
362
363 * [0] DO3 channel output state
364 ** DO3 is float in case no load between DO3 and V+.;
365 ** DO3 is high in case there is load between DO3 and V+.
366 ** DO3 LED is off in both case
367 * [1] DO2 channel output is low and DO2 LED is ON.
368 * [0] DO1 channel output state
369 ** DO1 is float in case no load between DO1 and V+.;
370 ** DO1 is high in case there is load between DO1 and V+.
371 ** DO1 LED is off in both case
372
373 === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
374
375
376 (((
377 **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
378 )))
379
380 (((
381 Total : 11 bytes payload
382 )))
383
384 [[image:image-20220523180452-3.png]]
385
386
387 (((
388 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
389 )))
390
391 [[image:image-20220523180506-4.png]]
392
393 * RO is for relay. ROx=1 : close，ROx=0 always open.
394 * FIRST: Indicate this is the first packet after join network.
395 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
396
397 (((
398 (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
399 )))
400
401 (((
402
403
404 **To use counting mode, please run:**
405 )))
406
407 (% class="box infomessage" %)
408 (((
409 (((
410 (((
411 **AT+MOD=2**
412 )))
413
414 (((
415 **ATZ**
416 )))
417 )))
418 )))
419
420 (((
421
422
423 (% style="color:#4f81bd" %)**AT Commands for counting:**
424
425
426 )))
427
428 (((
429 **For LT22222-L:**
430
431
432 (% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
433
434 (% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
435
436 (% style="color:blue" %)**AT+TRIG2=0,100**(%%)**  (set DI2 port to trigger on low level, valid signal is 100ms) **
437
438 (% style="color:blue" %)**AT+TRIG2=1,100**(%%)**  (set DI2 port to trigger on high level, valid signal is 100ms ) **
439
440 (% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set COUNT1 value to 60)**
441
442 (% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set COUNT2 value to 60)**
443 )))
444
445
446 === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
447
448
449 **LT22222-L**: This mode the DI1 is used as a counting pin.
450
451 [[image:image-20220523181246-5.png]]
452
453 (((
454
455
456 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
457 )))
458
459 [[image:image-20220523181301-6.png]]
460
461 * RO is for relay. ROx=1 : close，ROx=0 always open.
462 * FIRST: Indicate this is the first packet after join network.
463 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
464
465 (((
466 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
467 )))
468
469
470 (((
471 **To use counting mode, please run:**
472 )))
473
474 (% class="box infomessage" %)
475 (((
476 (((
477 (((
478 **AT+MOD=3**
479 )))
480
481 (((
482 **ATZ**
483 )))
484 )))
485 )))
486
487 (((
488 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
489 )))
490
491
492 === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
493
494
495 (((
496 **LT22222-L**: This mode the DI1 is used as a counting pin.
497 )))
498
499 (((
500 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.
501 )))
502
503 [[image:image-20220523181903-8.png]]
504
505
506 (((
507 (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
508 )))
509
510 [[image:image-20220523181727-7.png]]
511
512 * RO is for relay. ROx=1 : close，ROx=0 always open.
513 * FIRST: Indicate this is the first packet after join network.
514 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
515
516 (((
517 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
518 )))
519
520 (((
521
522
523 **To use this mode, please run:**
524 )))
525
526 (% class="box infomessage" %)
527 (((
528 (((
529 (((
530 **AT+MOD=4**
531 )))
532
533 (((
534 **ATZ**
535 )))
536 )))
537 )))
538
539
540 (((
541 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
542 )))
543
544 (((
545
546
547 **Plus below command for AVI1 Counting:**
548
549
550 (% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
551
552 (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
553
554 (% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**  (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
555
556 (% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**  (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
557 )))
558
559
560 === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
561
562
563 **LT22222-L**: This mode the DI1 is used as a counting pin.
564
565 [[image:image-20220523182334-9.png]]
566
567 (((
568
569
570 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
571 )))
572
573 * RO is for relay. ROx=1 : close，ROx=0 always open.
574 * FIRST: Indicate this is the first packet after join network.
575 * (((
576 DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
577 )))
578
579 (((
580 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
581 )))
582
583 (((
584
585
586 **To use this mode, please run:**
587 )))
588
589 (% class="box infomessage" %)
590 (((
591 (((
592 (((
593 **AT+MOD=5**
594 )))
595
596 (((
597 **ATZ**
598 )))
599 )))
600 )))
601
602 (((
603 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
604 )))
605
606
607 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
608
609
610 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
611
612 For example, if user has configured below commands:
613
614 * **AT+MOD=1 ** **~-~->**  The normal working mode
615 * **AT+ADDMOD6=1**   **~-~->**  Enable trigger
616
617 LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
618
619 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
620 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.**
621
622 (% style="color:#037691" %)**AT Command to set Trigger Condition**:
623
624
625 (% style="color:#4f81bd" %)**Trigger base on voltage**:
626
627 Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
628
629
630 **Example:**
631
632 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)
633
634 AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
635
636
637
638 (% style="color:#4f81bd" %)**Trigger base on current**:
639
640 Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
641
642
643 **Example:**
644
645 AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
646
647
648
649 (% style="color:#4f81bd" %)**Trigger base on DI status**:
650
651 DI status trigger Flag.
652
653 Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
654
655
656 **Example:**
657
658 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
659
660
661 (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
662
663 Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
664
665 Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
666
667 AA: Code for this downlink Command:
668
669 xx: 0: Limit for AV1 and AV2;  1: limit for AC1 and AC2 ; 2 DI1, DI2 trigger enable/disable
670
671 yy1 yy1: AC1 or AV1 low limit or DI1/DI2 trigger status.
672
673 yy2 yy2: AC1 or AV1 high limit.
674
675 yy3 yy3: AC2 or AV2 low limit.
676
677 Yy4 yy4: AC2 or AV2 high limit.
678
679
680 **Example1**: AA 00 13 88 00 00 00 00 00 00
681
682 Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
683
684
685 **Example2**: AA 02 01 00
686
687 Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
688
689
690
691 (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
692
693 MOD6 Payload : total 11 bytes payload
694
695 [[image:image-20220524085923-1.png]]
696
697
698 (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
699
700 [[image:image-20220524090106-2.png]]
701
702 * Each bits shows if the corresponding trigger has been configured.
703
704 **Example:**
705
706 10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
707
708
709
710 (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
711
712 [[image:image-20220524090249-3.png]]
713
714 * Each bits shows which status has been trigger on this uplink.
715
716 **Example:**
717
718 10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
719
720
721 (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
722
723 [[image:image-20220524090456-4.png]]
724
725 * Each bits shows which status has been trigger on this uplink.
726
727 **Example:**
728
729 00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
730
731 00000101: Means both DI1 and DI2 trigger are enabled.
732
733
734 (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
735
736 Downlink command to poll MOD6 status:
737
738 **AB 06**
739
740 When device got this command, it will send the MOD6 payload.
741
742
743 === 3.3.7 Payload Decoder ===
744
745 (((
746
747
748 **Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
749 )))
750
751
752 == 3.4 ​Configure LT via AT or Downlink ==
753
754
755 (((
756 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
757 )))
758
759 (((
760 (((
761 There are two kinds of Commands:
762 )))
763 )))
764
765 * (% 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]]
766
767 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
768
769 === 3.4.1 Common Commands ===
770
771
772 (((
773 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]]
774 )))
775
776
777 === 3.4.2 Sensor related commands ===
778
779
780 ==== 3.4.2.1 Set Transmit Interval ====
781
782
783 Set device uplink interval.
784
785 * (% style="color:#037691" %)**AT Command:**
786
787 (% style="color:blue" %)**AT+TDC=N **
788
789
790 **Example: **AT+TDC=30000. Means set interval to 30 seconds
791
792
793 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
794
795 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
796
797
798
799 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
800
801
802 Set work mode.
803
804 * (% style="color:#037691" %)**AT Command:**
805
806 (% style="color:blue" %)**AT+MOD=N  **
807
808
809 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
810
811
812 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
813
814 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
815
816
817
818 ==== 3.4.2.3 Poll an uplink ====
819
820
821 * (% style="color:#037691" %)**AT Command:**
822
823 There is no AT Command to poll uplink
824
825
826 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
827
828 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
829
830
831 **Example**: 0x08FF, ask device to send an Uplink
832
833
834
835 ==== 3.4.2.4 Enable Trigger Mode ====
836
837
838 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
839
840 * (% style="color:#037691" %)**AT Command:**
841
842 (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
843
844 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
845
846 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
847
848
849 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
850
851 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
852
853
854
855 ==== 3.4.2.5 Poll trigger settings ====
856
857
858 Poll trigger settings,
859
860 * (% style="color:#037691" %)**AT Command:**
861
862 There is no AT Command for this feature.
863
864
865 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
866
867 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
868
869
870
871 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
872
873
874 Enable Disable DI1/DI2/DI2 as trigger,
875
876 * (% style="color:#037691" %)**AT Command:**
877
878 (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
879
880
881 **Example:**
882
883 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
884
885 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
886
887 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
888
889
890
891 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
892
893
894 Set DI1 or DI3(for LT-33222-L) trigger.
895
896 * (% style="color:#037691" %)**AT Command:**
897
898 (% style="color:blue" %)**AT+TRIG1=a,b**
899
900 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
901
902 (% style="color:red" %)**b :** (%%)delay timing.
903
904
905 **Example:**
906
907 AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
908
909
910 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
911
912 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
913
914
915
916 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
917
918
919 Set DI2 trigger.
920
921 * (% style="color:#037691" %)**AT Command:**
922
923 (% style="color:blue" %)**AT+TRIG2=a,b**
924
925 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
926
927 (% style="color:red" %)**b :** (%%)delay timing.
928
929
930 **Example:**
931
932 AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
933
934
935 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
936
937 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
938
939
940
941 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
942
943
944 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
945
946 * (% style="color:#037691" %)**AT Command**
947
948 (% style="color:blue" %)**AT+ACLIM**
949
950
951 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
952
953 (% 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"]]
954
955
956
957 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
958
959
960 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
961
962 * (% style="color:#037691" %)**AT Command**
963
964 (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
965
966
967 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
968
969 (% 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"]]
970
971
972
973 ==== 3.4.2.11 Trigger – Set minimum interval ====
974
975
976 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
977
978 * (% style="color:#037691" %)**AT Command**
979
980 (% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
981
982
983 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
984
985 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
986
987 (((
988
989
990 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
991 )))
992
993
994
995 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
996
997
998 * (% style="color:#037691" %)**AT Command**
999
1000 There is no AT Command to control Digital Output
1001
1002
1003 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1004 * (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1005
1006 (((
1007 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1008 )))
1009
1010 (((
1011 01: Low,  00: High ,  11: No action
1012 )))
1013
1014 [[image:image-20220524092754-5.png]]
1015
1016 (((
1017 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1018 )))
1019
1020 (((
1021 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1022 )))
1023
1024
1025
1026 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1027
1028
1029 * (% style="color:#037691" %)**AT Command**
1030
1031 There is no AT Command to control Digital Output
1032
1033
1034 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1035
1036 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1037
1038
1039 This is to control the digital output time of DO pin. Include four bytes:
1040
1041 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1042
1043 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1044
1045 01: DO pins will change back to original state after timeout.
1046
1047 00: DO pins will change to an inverter state after timeout 
1048
1049
1050 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1051
1052 [[image:image-20220524093238-6.png]]
1053
1054
1055 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1056
1057 [[image:image-20220524093328-7.png]]
1058
1059
1060 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1061
1062 [[image:image-20220524093351-8.png]]
1063
1064
1065 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
1066
1067 Latching time. Unit: ms
1068
1069
1070 (% style="color:red" %)**Note: **
1071
1072 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1073
1074 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1075
1076
1077 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1078
1079
1080 **Example payload:**
1081
1082 **~1. A9 01 01 01 01 07 D0**
1083
1084 DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
1085
1086 **2. A9 01 00 01 11 07 D0**
1087
1088 DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
1089
1090 **3. A9 00 00 00 00 07 D0**
1091
1092 DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
1093
1094 **4. A9 00 11 01 00 07 D0**
1095
1096 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
1097
1098
1099
1100 ==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1101
1102
1103 * (% style="color:#037691" %)**AT Command:**
1104
1105 There is no AT Command to control Relay Output
1106
1107
1108 * (% style="color:#037691" %)**Downlink Payload (prefix 0x03):**
1109
1110 (% style="color:blue" %)**0x03 aa bb     ** (%%)~/~/ Set RO1/RO2 output
1111
1112
1113 (((
1114 If payload = 0x030100, it means set RO1 to close and RO2 to open.
1115 )))
1116
1117 (((
1118 01: Close ,  00: Open , 11: No action
1119 )))
1120
1121 (((
1122 [[image:image-20220524093724-9.png]]
1123 )))
1124
1125 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1126
1127
1128
1129 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1130
1131
1132 * (% style="color:#037691" %)**AT Command:**
1133
1134 There is no AT Command to control Relay Output
1135
1136
1137 * (% style="color:#037691" %)**Downlink Payload (prefix 0x05):**
1138
1139 (% style="color:blue" %)**0x05 aa bb cc dd     ** (%%)~/~/ Set RO1/RO2 relay with time control
1140
1141
1142 This is to control the relay output time of relay. Include four bytes:
1143
1144 (% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
1145
1146 (% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
1147
1148 01: Relays will change back to original state after timeout.
1149
1150 00: Relays will change to an inverter state after timeout
1151
1152
1153 (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1154
1155 [[image:image-20221008095908-1.png||height="364" width="564"]]
1156
1157
1158 (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1159
1160
1161 (% style="color:red" %)**Note:**
1162
1163 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1164
1165 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1166
1167
1168 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1169
1170
1171 **Example payload:**
1172
1173 **~1. 05 01 11 07 D0**
1174
1175 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1176
1177 **2. 05 01 10 07 D0**
1178
1179 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1180
1181 **3. 05 00 01 07 D0**
1182
1183 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1184
1185 **4. 05 00 00 07 D0**
1186
1187 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1188
1189
1190
1191 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1192
1193
1194 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1195
1196 * (% style="color:#037691" %)**AT Command:**
1197
1198 (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1199
1200
1201 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1202
1203 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1204
1205
1206
1207 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1208
1209
1210 * (% style="color:#037691" %)**AT Command:**
1211
1212 (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1213
1214 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1215
1216 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1217
1218
1219 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1220
1221 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1222
1223
1224
1225 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1226
1227
1228 Clear counting for counting mode
1229
1230 * (% style="color:#037691" %)**AT Command:**
1231
1232 (% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1233
1234
1235 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1236
1237 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1238
1239
1240
1241 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1242
1243
1244 * (% style="color:#037691" %)**AT Command:**
1245
1246 (% 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)
1247
1248
1249 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1250
1251 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1252
1253 (((
1254 range: aa bb cc:0 to 16777215,  (unit:second)
1255 )))
1256
1257
1258
1259 ==== 3.4.2.20 Reset save RO DO state ====
1260
1261
1262 * (% style="color:#037691" %)**AT Command:**
1263
1264 (% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1265
1266 (% 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.
1267
1268
1269 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1270
1271 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1272
1273
1274
1275 ==== 3.4.2.21 Encrypted payload ====
1276
1277
1278 * (% style="color:#037691" %)**AT Command:**
1279
1280 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1281
1282 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1283
1284
1285
1286 ==== 3.4.2.22 Get sensor value ====
1287
1288
1289 * (% style="color:#037691" %)**AT Command:**
1290
1291 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1292
1293 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1294
1295
1296
1297 ==== 3.4.2.23 Resets the downlink packet count ====
1298
1299
1300 * (% style="color:#037691" %)**AT Command:**
1301
1302 (% 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)
1303
1304 (% 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.
1305
1306
1307
1308 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1309
1310
1311 * (% style="color:#037691" %)**AT Command:**
1312
1313 (% 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)
1314
1315 (% 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.
1316
1317
1318 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1319
1320 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1321
1322
1323
1324 ==== 3.4.2.25 Copy downlink to uplink ====
1325
1326
1327 * (% style="color:#037691" %)**AT Command**(%%)**:**
1328
1329 (% 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.
1330
1331 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.
1332
1333
1334 [[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"]]
1335
1336 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1337
1338
1339
1340 [[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"]]
1341
1342 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1343
1344
1345
1346 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1347
1348
1349 * (((
1350 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1351
1352 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1353
1354
1355 )))
1356
1357 **Example：**
1358
1359 [[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"]]
1360
1361
1362 == 3.5 Integrate with Mydevice ==
1363
1364
1365 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:
1366
1367 (((
1368 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1369 )))
1370
1371 (((
1372 (% 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:
1373
1374
1375 )))
1376
1377 [[image:image-20220719105525-1.png||height="377" width="677"]]
1378
1379
1380
1381 [[image:image-20220719110247-2.png||height="388" width="683"]]
1382
1383
1384 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1385
1386 (% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1387
1388 Search under The things network
1389
1390 [[image:1653356838789-523.png||height="337" width="740"]]
1391
1392
1393
1394 After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1395
1396 [[image:image-20220524094909-1.png||height="335" width="729"]]
1397
1398
1399 [[image:image-20220524094909-2.png||height="337" width="729"]]
1400
1401
1402 [[image:image-20220524094909-3.png||height="338" width="727"]]
1403
1404
1405 [[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1406
1407
1408 [[image:image-20220524094909-5.png||height="341" width="734"]]
1409
1410
1411 == 3.6 Interface Detail ==
1412
1413 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1414
1415
1416 Support NPN Type sensor
1417
1418 [[image:1653356991268-289.png]]
1419
1420
1421 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1422
1423
1424 (((
1425 The DI port of LT-22222-L can support NPN or PNP output sensor.
1426 )))
1427
1428 (((
1429 (((
1430 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.
1431
1432
1433 )))
1434 )))
1435
1436 [[image:1653357170703-587.png]]
1437
1438 (((
1439 (((
1440 When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1441 )))
1442 )))
1443
1444 (((
1445
1446 )))
1447
1448 (((
1449 (% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1450 )))
1451
1452 (((
1453 This type of sensor will output a low signal GND when active.
1454 )))
1455
1456 * (((
1457 Connect sensor's output to DI1-
1458 )))
1459 * (((
1460 Connect sensor's VCC to DI1+.
1461 )))
1462
1463 (((
1464 So when sensor active, the current between NEC2501 pin1 and pin2 is：
1465 )))
1466
1467 (((
1468 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1469 )))
1470
1471 (((
1472 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.
1473 )))
1474
1475 (((
1476
1477 )))
1478
1479 (((
1480 (% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1481 )))
1482
1483 (((
1484 This type of sensor will output a high signal (example 24v) when active.
1485 )))
1486
1487 * (((
1488 Connect sensor's output to DI1+
1489 )))
1490 * (((
1491 Connect sensor's GND DI1-.
1492 )))
1493
1494 (((
1495 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1496 )))
1497
1498 (((
1499 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1500 )))
1501
1502 (((
1503 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.
1504 )))
1505
1506 (((
1507
1508 )))
1509
1510 (((
1511 (% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1512 )))
1513
1514 (((
1515 Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1516 )))
1517
1518 * (((
1519 Connect sensor's output to DI1+ with a serial 50K resistor
1520 )))
1521 * (((
1522 Connect sensor's GND DI1-.
1523 )))
1524
1525 (((
1526 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1527 )))
1528
1529 (((
1530 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1531 )))
1532
1533 (((
1534 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.
1535 )))
1536
1537
1538 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1539
1540
1541 (% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1542
1543 (% style="color:red" %)**Note: DO pins go to float when device is power off.**
1544
1545 [[image:1653357531600-905.png]]
1546
1547
1548 === 3.6.4 Analog Input Interface ===
1549
1550
1551 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:
1552
1553
1554 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1555
1556 [[image:1653357592296-182.png]]
1557
1558 Example to connect a 4~~20mA sensor
1559
1560 We take the wind speed sensor as an example for reference only.
1561
1562
1563 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1564
1565 (% style="color:red" %)**Red:  12~~24v**
1566
1567 (% style="color:#ffc000" %)**Yellow:  4~~20mA**
1568
1569 **Black:  GND**
1570
1571
1572 **Connection diagram:**
1573
1574 [[image:1653357640609-758.png]]
1575
1576 [[image:1653357648330-671.png||height="155" width="733"]]
1577
1578
1579 === 3.6.5 Relay Output ===
1580
1581
1582 (((
1583 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:
1584
1585 **Note**: RO pins go to Open(NO) when device is power off.
1586 )))
1587
1588 [[image:image-20220524100215-9.png]]
1589
1590
1591 [[image:image-20220524100215-10.png||height="382" width="723"]]
1592
1593
1594 == 3.7 LEDs Indicators ==
1595
1596
1597 [[image:image-20220524100748-11.png]]
1598
1599
1600 = 4. Use AT Command =
1601
1602 == 4.1 Access AT Command ==
1603
1604
1605 (((
1606 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.
1607 )))
1608
1609 (((
1610
1611 )))
1612
1613 [[image:1653358238933-385.png]]
1614
1615
1616 (((
1617 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:
1618 )))
1619
1620 [[image:1653358355238-883.png]]
1621
1622
1623 (((
1624 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/]]
1625 )))
1626
1627 (((
1628 AT+<CMD>?        : Help on <CMD>
1629 )))
1630
1631 (((
1632 AT+<CMD>         : Run <CMD>
1633 )))
1634
1635 (((
1636 AT+<CMD>=<value> : Set the value
1637 )))
1638
1639 (((
1640 AT+<CMD>=?       :  Get the value
1641 )))
1642
1643 (((
1644 ATZ: Trig a reset of the MCU
1645 )))
1646
1647 (((
1648 AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1649 )))
1650
1651 (((
1652 AT+DEUI: Get or Set the Device EUI
1653 )))
1654
1655 (((
1656 AT+DADDR: Get or Set the Device Address
1657 )))
1658
1659 (((
1660 AT+APPKEY: Get or Set the Application Key
1661 )))
1662
1663 (((
1664 AT+NWKSKEY: Get or Set the Network Session Key
1665 )))
1666
1667 (((
1668 AT+APPSKEY:  Get or Set the Application Session Key
1669 )))
1670
1671 (((
1672 AT+APPEUI:  Get or Set the Application EUI
1673 )))
1674
1675 (((
1676 AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1677 )))
1678
1679 (((
1680 AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1681 )))
1682
1683 (((
1684 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1685 )))
1686
1687 (((
1688 AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1689 )))
1690
1691 (((
1692 AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1693 )))
1694
1695 (((
1696 AT+RX2FQ: Get or Set the Rx2 window frequency
1697 )))
1698
1699 (((
1700 AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1701 )))
1702
1703 (((
1704 AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1705 )))
1706
1707 (((
1708 AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1709 )))
1710
1711 (((
1712 AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1713 )))
1714
1715 (((
1716 AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1717 )))
1718
1719 (((
1720 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1721 )))
1722
1723 (((
1724 AT+NWKID: Get or Set the Network ID
1725 )))
1726
1727 (((
1728 AT+FCU: Get or Set the Frame Counter Uplink
1729 )))
1730
1731 (((
1732 AT+FCD: Get or Set the Frame Counter Downlink
1733 )))
1734
1735 (((
1736 AT+CLASS: Get or Set the Device Class
1737 )))
1738
1739 (((
1740 AT+JOIN: Join network
1741 )))
1742
1743 (((
1744 AT+NJS: Get OTAA Join Status
1745 )))
1746
1747 (((
1748 AT+SENDB: Send hexadecimal data along with the application port
1749 )))
1750
1751 (((
1752 AT+SEND: Send text data along with the application port
1753 )))
1754
1755 (((
1756 AT+RECVB: Print last received data in binary format (with hexadecimal values)
1757 )))
1758
1759 (((
1760 AT+RECV: Print last received data in raw format
1761 )))
1762
1763 (((
1764 AT+VER:  Get current image version and Frequency Band
1765 )))
1766
1767 (((
1768 AT+CFM: Get or Set the confirmation mode (0-1)
1769 )))
1770
1771 (((
1772 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1773 )))
1774
1775 (((
1776 AT+SNR: Get the SNR of the last received packet
1777 )))
1778
1779 (((
1780 AT+RSSI: Get the RSSI of the last received packet
1781 )))
1782
1783 (((
1784 AT+TDC: Get or set the application data transmission interval in ms
1785 )))
1786
1787 (((
1788 AT+PORT: Get or set the application port
1789 )))
1790
1791 (((
1792 AT+DISAT: Disable AT commands
1793 )))
1794
1795 (((
1796 AT+PWORD: Set password, max 9 digits
1797 )))
1798
1799 (((
1800 AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1801 )))
1802
1803 (((
1804 AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1805 )))
1806
1807 (((
1808 AT+CFG: Print all settings
1809 )))
1810
1811
1812 == 4.2 Common AT Command Sequence ==
1813
1814 === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1815
1816 (((
1817
1818
1819 (((
1820 (% style="color:blue" %)**If device has not joined network yet:**
1821 )))
1822 )))
1823
1824 (((
1825 (% style="background-color:#dcdcdc" %)**123456**
1826 )))
1827
1828 (((
1829 (% style="background-color:#dcdcdc" %)**AT+FDR**
1830 )))
1831
1832 (((
1833 (% style="background-color:#dcdcdc" %)**123456**
1834 )))
1835
1836 (((
1837 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1838 )))
1839
1840 (((
1841 (% style="background-color:#dcdcdc" %)**ATZ**
1842 )))
1843
1844
1845 (((
1846 (% style="color:blue" %)**If device already joined network:**
1847 )))
1848
1849 (((
1850 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1851 )))
1852
1853 (((
1854 (% style="background-color:#dcdcdc" %)**ATZ**
1855 )))
1856
1857
1858 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1859
1860 (((
1861
1862
1863 (((
1864 (% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1865 )))
1866 )))
1867
1868 (((
1869 (% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
1870 )))
1871
1872 (((
1873 (% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1874 )))
1875
1876 (((
1877 (% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
1878 )))
1879
1880 (((
1881 (% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
1882 )))
1883
1884 (((
1885 (% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
1886 )))
1887
1888 (((
1889 (% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
1890 )))
1891
1892 (((
1893 (% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
1894 )))
1895
1896 (((
1897 (% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
1898 )))
1899
1900 (((
1901 (% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
1902 )))
1903
1904 (((
1905 (% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
1906 )))
1907
1908 (((
1909 (% 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.
1910 )))
1911
1912 (((
1913 (% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
1914
1915
1916 )))
1917
1918 (((
1919 (% style="color:red" %)**Note:**
1920 )))
1921
1922 (((
1923 **~1. Make sure the device is set to ABP mode in the IoT Server.**
1924
1925 **2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
1926
1927 **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?
1928 dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1929
1930 **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.**
1931
1932
1933 )))
1934
1935 (((
1936 [[image:1653359097980-169.png||height="188" width="729"]]
1937 )))
1938
1939 (((
1940
1941 )))
1942
1943 === 4.2.3 Change to Class A ===
1944
1945
1946 (((
1947 (% style="color:blue" %)**If sensor JOINED:**
1948
1949 (% style="background-color:#dcdcdc" %)**AT+CLASS=A
1950 ATZ**
1951 )))
1952
1953
1954 = 5. Case Study =
1955
1956 == 5.1 Counting how many objects pass in Flow Line ==
1957
1958
1959 Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
1960
1961
1962 = 6. FAQ =
1963
1964 == 6.1 How to upgrade the image? ==
1965
1966
1967 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1968
1969 * Support new features
1970 * For bug fix
1971 * Change LoRaWAN bands.
1972
1973 Below shows the hardware connection for how to upload an image to the LT:
1974
1975 [[image:1653359603330-121.png]]
1976
1977
1978 (((
1979 (% 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]].
1980 (% 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]].
1981 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
1982
1983
1984 (((
1985 (% style="color:blue" %)**For LT-22222-L**(%%):
1986 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.
1987 )))
1988
1989
1990 )))
1991
1992 [[image:image-20220524103407-12.png]]
1993
1994
1995 [[image:image-20220524103429-13.png]]
1996
1997
1998 [[image:image-20220524104033-15.png]]
1999
2000
2001 (% 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:
2002
2003
2004 [[image:1653360054704-518.png||height="186" width="745"]]
2005
2006
2007 (((
2008 (((
2009 == 6.2 How to change the LoRa Frequency Bands/Region? ==
2010
2011
2012 )))
2013 )))
2014
2015 (((
2016 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2017 )))
2018
2019 (((
2020
2021
2022 == 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2023
2024
2025 )))
2026
2027 (((
2028 (((
2029 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2030 )))
2031 )))
2032
2033 (((
2034 (((
2035 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2036
2037
2038 )))
2039 )))
2040
2041 (((
2042 (% 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.
2043
2044
2045 )))
2046
2047 (((
2048 [[image:1653360231087-571.png||height="401" width="727"]]
2049
2050
2051 )))
2052
2053 (((
2054 (% 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.**
2055 )))
2056
2057
2058
2059 (((
2060 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2061
2062
2063 )))
2064
2065 (((
2066 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2067 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2068 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2069 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2070 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2071 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2072 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2073 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2074 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2075 )))
2076
2077
2078 (((
2079 As shown in below:
2080 )))
2081
2082 [[image:1653360498588-932.png||height="485" width="726"]]
2083
2084
2085 == 6.4 Can I see counting event in Serial? ==
2086
2087
2088 (((
2089 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.
2090
2091
2092 == 6.5 Can i use point to point communication for LT-22222-L? ==
2093
2094
2095 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]].
2096
2097
2098 )))
2099
2100 (((
2101 == 6.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2102
2103
2104 If the device is not shut down, but directly powered off.
2105
2106 It will default that this is a power-off state.
2107
2108 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2109
2110 After restart, the status before power failure will be read from flash.
2111
2112
2113 == 6.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2114
2115
2116 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2117
2118
2119 [[image:image-20221006170630-1.png||height="610" width="945"]]
2120
2121
2122 == 6.8 Can LT22222-L save RO state? ==
2123
2124
2125 Firmware version needs to be no less than 1.6.0.
2126
2127
2128 = 7. Trouble Shooting =
2129 )))
2130
2131 (((
2132 (((
2133 == 7.1 Downlink doesn't work, how to solve it? ==
2134
2135
2136 )))
2137 )))
2138
2139 (((
2140 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2141 )))
2142
2143 (((
2144
2145
2146 == 7.2 Have trouble to upload image. ==
2147
2148
2149 )))
2150
2151 (((
2152 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2153 )))
2154
2155 (((
2156
2157
2158 == 7.3 Why I can't join TTN in US915 /AU915 bands? ==
2159
2160
2161 )))
2162
2163 (((
2164 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2165 )))
2166
2167
2168 = 8. Order Info =
2169
2170
2171 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2172
2173 (% style="color:#4f81bd" %)**XXX:**
2174
2175 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2176 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2177 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2178 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2179 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2180 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2181 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2182 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2183 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2184
2185 = 9. Packing Info =
2186
2187
2188 **Package Includes**:
2189
2190 * LT-22222-L I/O Controller x 1
2191 * Stick Antenna for LoRa RF part x 1
2192 * Bracket for controller x1
2193 * Program cable x 1
2194
2195 **Dimension and weight**:
2196
2197 * Device Size: 13.5 x 7 x 3 cm
2198 * Device Weight: 105g
2199 * Package Size / pcs : 14.5 x 8 x 5 cm
2200 * Weight / pcs : 170g
2201
2202 = 10. Support =
2203
2204
2205 * (((
2206 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.
2207 )))
2208 * (((
2209 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]]
2210
2211
2212
2213 )))
2214
2215 = 11. Reference​​​​​ =
2216
2217
2218 * 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]]
2219 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2220 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2221
2222