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Version 118.1 by Ellie Zhang on 2023/05/09 09:04
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1 (% style="text-align:center" %)
2 [[image:image-20220523163353-1.jpeg||height="604" width="500"]]
3
4
5
6 **Table of Contents:**
7
8 {{toc/}}
9
10
11
12
13
14
15
16 = 1.Introduction =
17
18 == 1.1 What is LT Series I/O Controller ==
19
20 (((
21
22
23 (((
24 The Dragino (% style="color:blue" %)**LT series I/O Modules**(%%) are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as:** (% style="color:blue" %)analog current Input, analog voltage input(%%)**(% style="color:blue" %), **relay output**, **digital input**(%%) and (% style="color:blue" %)**digital output**(%%) etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
25 )))
26 )))
27
28 (((
29 The LT I/O Controllers allows the user to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
30 )))
31
32 (((
33 The LT I/O Controllers is aiming to provide an (% style="color:blue" %)**easy and low cost installation** (%%)by using LoRa wireless technology.
34 )))
35
36 (((
37 The use environment includes:
38 )))
39
40 (((
41 1) If user's area has LoRaWAN service coverage, they can just install the I/O controller and configure it to connect the LoRaWAN provider via wireless.
42 )))
43
44 (((
45 2) User can set up a LoRaWAN gateway locally and configure the controller to connect to the gateway via wireless.
46
47
48 )))
49
50 (((
51 [[image:1653295757274-912.png]]
52
53
54 )))
55
56 == 1.2  Specifications ==
57
58 (((
59
60
61 (% style="color:#037691" %)**Hardware System:**
62 )))
63
64 * (((
65 STM32L072xxxx MCU
66 )))
67 * (((
68 SX1276/78 Wireless Chip 
69 )))
70 * (((
71 (((
72 Power Consumption:
73 )))
74
75 * (((
76 Idle: 4mA@12v
77 )))
78 * (((
79 20dB Transmit: 34mA@12v
80 )))
81 )))
82
83 (((
84
85
86 (% style="color:#037691" %)**Interface for Model: LT22222-L:**
87 )))
88
89 * (((
90 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
91 )))
92 * (((
93 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
94 )))
95 * (((
96 2 x Relay Output (5A@250VAC / 30VDC)
97 )))
98 * (((
99 2 x 0~~20mA Analog Input (res:0.01mA)
100 )))
101 * (((
102 2 x 0~~30V Analog Input (res:0.01v)
103 )))
104 * (((
105 Power Input 7~~ 24V DC. 
106 )))
107
108 (((
109
110
111 (% style="color:#037691" %)**LoRa Spec:**
112 )))
113
114 * (((
115 (((
116 Frequency Range:
117 )))
118
119 * (((
120 Band 1 (HF): 862 ~~ 1020 Mhz
121 )))
122 * (((
123 Band 2 (LF): 410 ~~ 528 Mhz
124 )))
125 )))
126 * (((
127 168 dB maximum link budget.
128 )))
129 * (((
130 +20 dBm - 100 mW constant RF output vs.
131 )))
132 * (((
133 +14 dBm high efficiency PA.
134 )))
135 * (((
136 Programmable bit rate up to 300 kbps.
137 )))
138 * (((
139 High sensitivity: down to -148 dBm.
140 )))
141 * (((
142 Bullet-proof front end: IIP3 = -12.5 dBm.
143 )))
144 * (((
145 Excellent blocking immunity.
146 )))
147 * (((
148 Low RX current of 10.3 mA, 200 nA register retention.
149 )))
150 * (((
151 Fully integrated synthesizer with a resolution of 61 Hz.
152 )))
153 * (((
154 FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
155 )))
156 * (((
157 Built-in bit synchronizer for clock recovery.
158 )))
159 * (((
160 Preamble detection.
161 )))
162 * (((
163 127 dB Dynamic Range RSSI.
164 )))
165 * (((
166 Automatic RF Sense and CAD with ultra-fast AFC.
167 )))
168 * (((
169 Packet engine up to 256 bytes with CRC.
170
171
172
173 )))
174
175 == 1.3 Features ==
176
177
178 * LoRaWAN Class A & Class C protocol
179
180 * Optional Customized LoRa Protocol
181
182 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
183
184 * AT Commands to change parameters
185
186 * Remote configure parameters via LoRa Downlink
187
188 * Firmware upgradable via program port
189
190 * Counting
191
192
193 == 1.4  Applications ==
194
195
196 * Smart Buildings & Home Automation
197
198 * Logistics and Supply Chain Management
199
200 * Smart Metering
201
202 * Smart Agriculture
203
204 * Smart Cities
205
206 * Smart Factory
207
208
209 == 1.5 Hardware Variants ==
210
211
212 (% border="1" style="background-color:#f2f2f2; width:500px" %)
213 |(% style="background-color:#d9e2f3; color:#0070c0; width:103px" %)**Model**|(% style="background-color:#d9e2f3; color:#0070c0; width:131px" %)**Photo**|(% style="background-color:#d9e2f3; color:#0070c0; width:334px" %)**Description**
214 |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
215 (% style="text-align:center" %)
216 [[image:image-20230424115112-1.png||height="106" width="58"]]
217 )))|(% style="width:334px" %)(((
218 * 2 x Digital Input (Bi-direction)
219 * 2 x Digital Output
220 * 2 x Relay Output (5A@250VAC / 30VDC)
221 * 2 x 0~~20mA Analog Input (res:0.01mA)
222 * 2 x 0~~30V Analog Input (res:0.01v)
223 * 1 x Counting Port
224 )))
225
226
227 = 2. Power ON Device =
228
229
230 (((
231 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.
232 )))
233
234 (((
235 PWR will on when device is properly powered.
236
237
238 )))
239
240 [[image:1653297104069-180.png]]
241
242
243 = 3. Operation Mode =
244
245 == 3.1 How it works? ==
246
247
248 (((
249 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. 
250 )))
251
252 (((
253 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.
254 )))
255
256
257 == 3.2 Example to join LoRaWAN network ==
258
259
260 (((
261 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. 
262
263
264 )))
265
266 [[image:image-20220523172350-1.png||height="266" width="864"]]
267
268
269 (((
270 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:
271
272
273 )))
274
275 (((
276 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
277 )))
278
279 (((
280 Each LT is shipped with a sticker with the default device EUI as below:
281 )))
282
283 [[image:image-20230425173427-2.png]]
284
285
286 Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
287
288 **Add APP EUI in the application.**
289
290 [[image:1653297955910-247.png||height="321" width="716"]]
291
292
293 **Add APP KEY and DEV EUI**
294
295 [[image:1653298023685-319.png]]
296
297
298
299 (((
300 (% 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.
301
302
303 )))
304
305 [[image:1653298044601-602.png||height="405" width="709"]]
306
307
308 == 3.3 Uplink Payload ==
309
310
311 There are five working modes + one interrupt mode on LT for different type application:
312
313 * (% style="color:blue" %)**MOD1**(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
314 * (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO
315 * (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO
316 * (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
317 * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
318 * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
319
320
321 === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
322
323
324 (((
325 The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
326 )))
327
328 [[image:image-20220523174024-3.png]]
329
330 (((
331
332
333 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
334 )))
335
336 [[image:image-20220523174254-4.png]]
337
338 * RO is for relay. ROx=1 : close，ROx=0 always open.
339 * DI is for digital input. DIx=1: high or float, DIx=0: low.
340 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
341
342 (% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
343
344 For example if payload is: [[image:image-20220523175847-2.png]]
345
346
347 **The value for the interface is:  **
348
349 AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
350
351 AVI2 channel voltage is 0x04AC/1000=1.196V
352
353 ACI1 channel current is 0x1310/1000=4.880mA
354
355 ACI2 channel current is 0x1300/1000=4.864mA
356
357 The last byte 0xAA= 10101010(B) means
358
359 * [1] RO1 relay channel is close and the RO1 LED is ON.
360 * [0] RO2 relay channel is open and RO2 LED is OFF;
361
362 **LT22222-L:**
363
364 * [1] DI2 channel is high input and DI2 LED is ON;
365 * [0] DI1 channel is low input;
366
367 * [0] DO3 channel output state
368 ** DO3 is float in case no load between DO3 and V+.;
369 ** DO3 is high in case there is load between DO3 and V+.
370 ** DO3 LED is off in both case
371 * [1] DO2 channel output is low and DO2 LED is ON.
372 * [0] DO1 channel output state
373 ** DO1 is float in case no load between DO1 and V+.;
374 ** DO1 is high in case there is load between DO1 and V+.
375 ** DO1 LED is off in both case
376
377
378 === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
379
380
381 (((
382 **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
383 )))
384
385 (((
386 Total : 11 bytes payload
387 )))
388
389 [[image:image-20220523180452-3.png]]
390
391
392 (((
393 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
394 )))
395
396 [[image:image-20220523180506-4.png]]
397
398 * RO is for relay. ROx=1 : close，ROx=0 always open.
399 * FIRST: Indicate this is the first packet after join network.
400 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
401
402 (((
403 (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
404 )))
405
406 (((
407
408
409 **To use counting mode, please run:**
410 )))
411
412 (% class="box infomessage" %)
413 (((
414 (((
415 (((
416 **AT+MOD=2**
417 )))
418
419 (((
420 **ATZ**
421 )))
422 )))
423 )))
424
425 (((
426
427
428 (% style="color:#4f81bd" %)**AT Commands for counting:**
429
430
431 )))
432
433 (((
434 **For LT22222-L:**
435
436
437 (% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
438
439 (% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
440
441 (% style="color:blue" %)**AT+TRIG2=0,100**(%%)**  (set DI2 port to trigger on low level, valid signal is 100ms) **
442
443 (% style="color:blue" %)**AT+TRIG2=1,100**(%%)**  (set DI2 port to trigger on high level, valid signal is 100ms ) **
444
445 (% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set COUNT1 value to 60)**
446
447 (% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set COUNT2 value to 60)**
448 )))
449
450
451 === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
452
453
454 **LT22222-L**: This mode the DI1 is used as a counting pin.
455
456 [[image:image-20220523181246-5.png]]
457
458 (((
459
460
461 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
462 )))
463
464 [[image:image-20220523181301-6.png]]
465
466 * RO is for relay. ROx=1 : close，ROx=0 always open.
467 * FIRST: Indicate this is the first packet after join network.
468 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
469
470 (((
471 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
472 )))
473
474
475 (((
476 **To use counting mode, please run:**
477 )))
478
479 (% class="box infomessage" %)
480 (((
481 (((
482 (((
483 **AT+MOD=3**
484 )))
485
486 (((
487 **ATZ**
488 )))
489 )))
490 )))
491
492 (((
493 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
494 )))
495
496
497 === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
498
499
500 (((
501 **LT22222-L**: This mode the DI1 is used as a counting pin.
502 )))
503
504 (((
505 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.
506 )))
507
508 [[image:image-20220523181903-8.png]]
509
510
511 (((
512 (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
513 )))
514
515 [[image:image-20220523181727-7.png]]
516
517 * RO is for relay. ROx=1 : close，ROx=0 always open.
518 * FIRST: Indicate this is the first packet after join network.
519 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
520
521 (((
522 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
523 )))
524
525 (((
526
527
528 **To use this mode, please run:**
529 )))
530
531 (% class="box infomessage" %)
532 (((
533 (((
534 (((
535 **AT+MOD=4**
536 )))
537
538 (((
539 **ATZ**
540 )))
541 )))
542 )))
543
544
545 (((
546 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
547 )))
548
549 (((
550
551
552 **Plus below command for AVI1 Counting:**
553
554
555 (% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
556
557 (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
558
559 (% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**  (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
560
561 (% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**  (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
562 )))
563
564
565 === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
566
567
568 **LT22222-L**: This mode the DI1 is used as a counting pin.
569
570 [[image:image-20220523182334-9.png]]
571
572 (((
573
574
575 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
576 )))
577
578 * RO is for relay. ROx=1 : close，ROx=0 always open.
579 * FIRST: Indicate this is the first packet after join network.
580 * (((
581 DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
582 )))
583
584 (((
585 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
586 )))
587
588 (((
589
590
591 **To use this mode, please run:**
592 )))
593
594 (% class="box infomessage" %)
595 (((
596 (((
597 (((
598 **AT+MOD=5**
599 )))
600
601 (((
602 **ATZ**
603 )))
604 )))
605 )))
606
607 (((
608 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
609 )))
610
611
612 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
613
614
615 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
616
617 For example, if user has configured below commands:
618
619 * **AT+MOD=1 ** **~-~->**  The normal working mode
620 * **AT+ADDMOD6=1**   **~-~->**  Enable trigger
621
622 LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
623
624 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
625 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.**
626
627 (% style="color:#037691" %)**AT Command to set Trigger Condition**:
628
629
630 (% style="color:#4f81bd" %)**Trigger base on voltage**:
631
632 Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
633
634
635 **Example:**
636
637 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)
638
639 AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
640
641
642
643 (% style="color:#4f81bd" %)**Trigger base on current**:
644
645 Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
646
647
648 **Example:**
649
650 AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
651
652
653
654 (% style="color:#4f81bd" %)**Trigger base on DI status**:
655
656 DI status trigger Flag.
657
658 Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
659
660
661 **Example:**
662
663 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
664
665
666 (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
667
668 Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
669
670 Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
671
672 AA: Code for this downlink Command:
673
674 xx: 0: Limit for AV1 and AV2;  1: limit for AC1 and AC2 ; 2 DI1, DI2 trigger enable/disable
675
676 yy1 yy1: AC1 or AV1 low limit or DI1/DI2 trigger status.
677
678 yy2 yy2: AC1 or AV1 high limit.
679
680 yy3 yy3: AC2 or AV2 low limit.
681
682 Yy4 yy4: AC2 or AV2 high limit.
683
684
685 **Example1**: AA 00 13 88 00 00 00 00 00 00
686
687 Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
688
689
690 **Example2**: AA 02 01 00
691
692 Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
693
694
695
696 (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
697
698 MOD6 Payload : total 11 bytes payload
699
700 [[image:image-20220524085923-1.png]]
701
702
703 (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
704
705 [[image:image-20220524090106-2.png]]
706
707 * Each bits shows if the corresponding trigger has been configured.
708
709 **Example:**
710
711 10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
712
713
714
715 (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
716
717 [[image:image-20220524090249-3.png]]
718
719 * Each bits shows which status has been trigger on this uplink.
720
721 **Example:**
722
723 10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
724
725
726 (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
727
728 [[image:image-20220524090456-4.png]]
729
730 * Each bits shows which status has been trigger on this uplink.
731
732 **Example:**
733
734 00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
735
736 00000101: Means both DI1 and DI2 trigger are enabled.
737
738
739 (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
740
741 Downlink command to poll MOD6 status:
742
743 **AB 06**
744
745 When device got this command, it will send the MOD6 payload.
746
747
748 === 3.3.7 Payload Decoder ===
749
750 (((
751
752
753 **Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
754 )))
755
756
757 == 3.4 ​Configure LT via AT or Downlink ==
758
759
760 (((
761 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
762 )))
763
764 (((
765 (((
766 There are two kinds of Commands:
767 )))
768 )))
769
770 * (% 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]]
771
772 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
773
774
775 === 3.4.1 Common Commands ===
776
777
778 (((
779 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]]
780 )))
781
782
783 === 3.4.2 Sensor related commands ===
784
785 ==== 3.4.2.1 Set Transmit Interval ====
786
787
788 Set device uplink interval.
789
790 * (% style="color:#037691" %)**AT Command:**
791
792 (% style="color:blue" %)**AT+TDC=N **
793
794
795 **Example: **AT+TDC=30000. Means set interval to 30 seconds
796
797
798 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
799
800 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
801
802
803
804 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
805
806
807 Set work mode.
808
809 * (% style="color:#037691" %)**AT Command:**
810
811 (% style="color:blue" %)**AT+MOD=N  **
812
813
814 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
815
816
817 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
818
819 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
820
821
822
823 ==== 3.4.2.3 Poll an uplink ====
824
825
826 * (% style="color:#037691" %)**AT Command:**
827
828 There is no AT Command to poll uplink
829
830
831 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
832
833 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
834
835
836 **Example**: 0x08FF, ask device to send an Uplink
837
838
839
840 ==== 3.4.2.4 Enable Trigger Mode ====
841
842
843 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
844
845 * (% style="color:#037691" %)**AT Command:**
846
847 (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
848
849 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
850
851 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
852
853
854 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
855
856 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
857
858
859
860 ==== 3.4.2.5 Poll trigger settings ====
861
862
863 Poll trigger settings,
864
865 * (% style="color:#037691" %)**AT Command:**
866
867 There is no AT Command for this feature.
868
869
870 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
871
872 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
873
874
875
876 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
877
878
879 Enable Disable DI1/DI2/DI2 as trigger,
880
881 * (% style="color:#037691" %)**AT Command:**
882
883 (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
884
885
886 **Example:**
887
888 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
889
890 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
891
892 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
893
894
895
896 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
897
898
899 Set DI1 or DI3(for LT-33222-L) trigger.
900
901 * (% style="color:#037691" %)**AT Command:**
902
903 (% style="color:blue" %)**AT+TRIG1=a,b**
904
905 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
906
907 (% style="color:red" %)**b :** (%%)delay timing.
908
909
910 **Example:**
911
912 AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
913
914
915 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
916
917 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
918
919
920
921 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
922
923
924 Set DI2 trigger.
925
926 * (% style="color:#037691" %)**AT Command:**
927
928 (% style="color:blue" %)**AT+TRIG2=a,b**
929
930 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
931
932 (% style="color:red" %)**b :** (%%)delay timing.
933
934
935 **Example:**
936
937 AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
938
939
940 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
941
942 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
943
944
945
946 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
947
948
949 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
950
951 * (% style="color:#037691" %)**AT Command**
952
953 (% style="color:blue" %)**AT+ACLIM**
954
955
956 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
957
958 (% 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"]]
959
960
961
962 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
963
964
965 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
966
967 * (% style="color:#037691" %)**AT Command**
968
969 (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
970
971
972 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
973
974 (% 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"]]
975
976
977
978 ==== 3.4.2.11 Trigger – Set minimum interval ====
979
980
981 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
982
983 * (% style="color:#037691" %)**AT Command**
984
985 (% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
986
987
988 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
989
990 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
991
992 (((
993
994
995 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
996 )))
997
998
999
1000 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1001
1002
1003 * (% style="color:#037691" %)**AT Command**
1004
1005 There is no AT Command to control Digital Output
1006
1007
1008 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1009 * (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1010
1011 (((
1012 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1013 )))
1014
1015 (((
1016 01: Low,  00: High ,  11: No action
1017 )))
1018
1019 [[image:image-20220524092754-5.png]]
1020
1021 (((
1022 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1023 )))
1024
1025 (((
1026 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1027 )))
1028
1029
1030
1031 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1032
1033
1034 * (% style="color:#037691" %)**AT Command**
1035
1036 There is no AT Command to control Digital Output
1037
1038
1039 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1040
1041 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1042
1043
1044 This is to control the digital output time of DO pin. Include four bytes:
1045
1046 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1047
1048 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1049
1050 01: DO pins will change back to original state after timeout.
1051
1052 00: DO pins will change to an inverter state after timeout 
1053
1054
1055 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1056
1057 [[image:image-20220524093238-6.png]]
1058
1059
1060 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1061
1062 [[image:image-20220524093328-7.png]]
1063
1064
1065 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1066
1067 [[image:image-20220524093351-8.png]]
1068
1069
1070 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
1071
1072 Latching time. Unit: ms
1073
1074
1075 (% style="color:red" %)**Note: **
1076
1077 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1078
1079 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1080
1081
1082 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1083
1084
1085 **Example payload:**
1086
1087 **~1. A9 01 01 01 01 07 D0**
1088
1089 DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
1090
1091 **2. A9 01 00 01 11 07 D0**
1092
1093 DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
1094
1095 **3. A9 00 00 00 00 07 D0**
1096
1097 DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
1098
1099 **4. A9 00 11 01 00 07 D0**
1100
1101 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
1102
1103
1104
1105 ==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1106
1107
1108 * (% style="color:#037691" %)**AT Command:**
1109
1110 There is no AT Command to control Relay Output
1111
1112
1113 * (% style="color:#037691" %)**Downlink Payload (prefix 0x03):**
1114
1115 (% style="color:blue" %)**0x03 aa bb     ** (%%)~/~/ Set RO1/RO2 output
1116
1117
1118 (((
1119 If payload = 0x030100, it means set RO1 to close and RO2 to open.
1120 )))
1121
1122 (((
1123 01: Close ,  00: Open , 11: No action
1124 )))
1125
1126 (((
1127 [[image:image-20230426161322-1.png]]
1128 )))
1129
1130 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1131
1132
1133
1134 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1135
1136
1137 * (% style="color:#037691" %)**AT Command:**
1138
1139 There is no AT Command to control Relay Output
1140
1141
1142 * (% style="color:#037691" %)**Downlink Payload (prefix 0x05):**
1143
1144 (% style="color:blue" %)**0x05 aa bb cc dd     ** (%%)~/~/ Set RO1/RO2 relay with time control
1145
1146
1147 This is to control the relay output time of relay. Include four bytes:
1148
1149 (% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
1150
1151 (% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
1152
1153 01: Relays will change back to original state after timeout.
1154
1155 00: Relays will change to an inverter state after timeout
1156
1157
1158 (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1159
1160 [[image:image-20221008095908-1.png||height="364" width="564"]]
1161
1162
1163 (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1164
1165
1166 (% style="color:red" %)**Note:**
1167
1168 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1169
1170 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1171
1172
1173 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1174
1175
1176 **Example payload:**
1177
1178 **~1. 05 01 11 07 D0**
1179
1180 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1181
1182 **2. 05 01 10 07 D0**
1183
1184 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1185
1186 **3. 05 00 01 07 D0**
1187
1188 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1189
1190 **4. 05 00 00 07 D0**
1191
1192 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1193
1194
1195
1196 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1197
1198
1199 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1200
1201 * (% style="color:#037691" %)**AT Command:**
1202
1203 (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1204
1205
1206 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1207
1208 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1209
1210
1211
1212 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1213
1214
1215 * (% style="color:#037691" %)**AT Command:**
1216
1217 (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1218
1219 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1220
1221 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1222
1223
1224 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1225
1226 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1227
1228
1229
1230 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1231
1232
1233 Clear counting for counting mode
1234
1235 * (% style="color:#037691" %)**AT Command:**
1236
1237 (% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1238
1239
1240 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1241
1242 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1243
1244
1245
1246 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1247
1248
1249 * (% style="color:#037691" %)**AT Command:**
1250
1251 (% 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)
1252
1253
1254 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1255
1256 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1257
1258 (((
1259 range: aa bb cc:0 to 16777215,  (unit:second)
1260 )))
1261
1262
1263
1264 ==== 3.4.2.20 Reset save RO DO state ====
1265
1266
1267 * (% style="color:#037691" %)**AT Command:**
1268
1269 (% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1270
1271 (% 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.
1272
1273
1274 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1275
1276 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1277
1278
1279
1280 ==== 3.4.2.21 Encrypted payload ====
1281
1282
1283 * (% style="color:#037691" %)**AT Command:**
1284
1285 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1286
1287 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1288
1289
1290
1291 ==== 3.4.2.22 Get sensor value ====
1292
1293
1294 * (% style="color:#037691" %)**AT Command:**
1295
1296 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1297
1298 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1299
1300
1301
1302 ==== 3.4.2.23 Resets the downlink packet count ====
1303
1304
1305 * (% style="color:#037691" %)**AT Command:**
1306
1307 (% 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)
1308
1309 (% 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.
1310
1311
1312
1313 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1314
1315
1316 * (% style="color:#037691" %)**AT Command:**
1317
1318 (% 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)
1319
1320 (% 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.
1321
1322
1323 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1324
1325 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1326
1327
1328
1329 ==== 3.4.2.25 Copy downlink to uplink ====
1330
1331
1332 * (% style="color:#037691" %)**AT Command**(%%)**:**
1333
1334 (% 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.
1335
1336 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.
1337
1338
1339 [[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"]]
1340
1341 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1342
1343
1344
1345 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]
1346
1347 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1348
1349
1350
1351 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1352
1353
1354 * (((
1355 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1356
1357 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1358
1359
1360 )))
1361
1362 **Example：**
1363
1364 [[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"]]
1365
1366
1367 == 3.5 Integrate with Mydevice ==
1368
1369
1370 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:
1371
1372 (((
1373 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1374 )))
1375
1376 (((
1377 (% 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:
1378
1379
1380 )))
1381
1382 [[image:image-20220719105525-1.png||height="377" width="677"]]
1383
1384
1385
1386 [[image:image-20220719110247-2.png||height="388" width="683"]]
1387
1388
1389 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1390
1391 (% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1392
1393 Search under The things network
1394
1395 [[image:1653356838789-523.png||height="337" width="740"]]
1396
1397
1398
1399 After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1400
1401 [[image:image-20220524094909-1.png||height="335" width="729"]]
1402
1403
1404 [[image:image-20220524094909-2.png||height="337" width="729"]]
1405
1406
1407 [[image:image-20220524094909-3.png||height="338" width="727"]]
1408
1409
1410 [[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1411
1412
1413 [[image:image-20220524094909-5.png||height="341" width="734"]]
1414
1415
1416 == 3.6 Interface Detail ==
1417
1418 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1419
1420
1421 Support NPN Type sensor
1422
1423 [[image:1653356991268-289.png]]
1424
1425
1426 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1427
1428
1429 (((
1430 The DI port of LT-22222-L can support NPN or PNP output sensor.
1431 )))
1432
1433 (((
1434 (((
1435 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.
1436
1437
1438 )))
1439 )))
1440
1441 [[image:1653357170703-587.png]]
1442
1443 (((
1444 (((
1445 When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1446 )))
1447 )))
1448
1449 (((
1450
1451 )))
1452
1453 (((
1454 (% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1455 )))
1456
1457 (((
1458 This type of sensor will output a low signal GND when active.
1459 )))
1460
1461 * (((
1462 Connect sensor's output to DI1-
1463 )))
1464 * (((
1465 Connect sensor's VCC to DI1+.
1466 )))
1467
1468 (((
1469 So when sensor active, the current between NEC2501 pin1 and pin2 is：
1470 )))
1471
1472 (((
1473 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1474 )))
1475
1476 (((
1477 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.
1478 )))
1479
1480 (((
1481
1482 )))
1483
1484 (((
1485 (% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1486 )))
1487
1488 (((
1489 This type of sensor will output a high signal (example 24v) when active.
1490 )))
1491
1492 * (((
1493 Connect sensor's output to DI1+
1494 )))
1495 * (((
1496 Connect sensor's GND DI1-.
1497 )))
1498
1499 (((
1500 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1501 )))
1502
1503 (((
1504 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1505 )))
1506
1507 (((
1508 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.
1509 )))
1510
1511 (((
1512
1513 )))
1514
1515 (((
1516 (% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1517 )))
1518
1519 (((
1520 Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1521 )))
1522
1523 * (((
1524 Connect sensor's output to DI1+ with a serial 50K resistor
1525 )))
1526 * (((
1527 Connect sensor's GND DI1-.
1528 )))
1529
1530 (((
1531 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1532 )))
1533
1534 (((
1535 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1536 )))
1537
1538 (((
1539 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.
1540 )))
1541
1542
1543 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1544
1545
1546 (% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1547
1548 (% style="color:red" %)**Note: DO pins go to float when device is power off.**
1549
1550 [[image:1653357531600-905.png]]
1551
1552
1553 === 3.6.4 Analog Input Interface ===
1554
1555
1556 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:
1557
1558
1559 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1560
1561 [[image:1653357592296-182.png]]
1562
1563 Example to connect a 4~~20mA sensor
1564
1565 We take the wind speed sensor as an example for reference only.
1566
1567
1568 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1569
1570 (% style="color:red" %)**Red:  12~~24v**
1571
1572 (% style="color:#ffc000" %)**Yellow:  4~~20mA**
1573
1574 **Black:  GND**
1575
1576
1577 **Connection diagram:**
1578
1579 [[image:1653357640609-758.png]]
1580
1581 [[image:1653357648330-671.png||height="155" width="733"]]
1582
1583
1584 === 3.6.5 Relay Output ===
1585
1586
1587 (((
1588 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:
1589
1590 **Note**: RO pins go to Open(NO) when device is power off.
1591 )))
1592
1593 [[image:image-20220524100215-9.png]]
1594
1595
1596 [[image:image-20220524100215-10.png||height="382" width="723"]]
1597
1598
1599 == 3.7 LEDs Indicators ==
1600
1601
1602 [[image:image-20220524100748-11.png]]
1603
1604
1605 = 4. Use AT Command =
1606
1607 == 4.1 Access AT Command ==
1608
1609
1610 (((
1611 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.
1612 )))
1613
1614 (((
1615
1616 )))
1617
1618 [[image:1653358238933-385.png]]
1619
1620
1621 (((
1622 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:
1623 )))
1624
1625 [[image:1653358355238-883.png]]
1626
1627
1628 (((
1629 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/]]
1630 )))
1631
1632 (((
1633 AT+<CMD>?        : Help on <CMD>
1634 )))
1635
1636 (((
1637 AT+<CMD>         : Run <CMD>
1638 )))
1639
1640 (((
1641 AT+<CMD>=<value> : Set the value
1642 )))
1643
1644 (((
1645 AT+<CMD>=?       :  Get the value
1646 )))
1647
1648 (((
1649 ATZ: Trig a reset of the MCU
1650 )))
1651
1652 (((
1653 AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1654 )))
1655
1656 (((
1657 AT+DEUI: Get or Set the Device EUI
1658 )))
1659
1660 (((
1661 AT+DADDR: Get or Set the Device Address
1662 )))
1663
1664 (((
1665 AT+APPKEY: Get or Set the Application Key
1666 )))
1667
1668 (((
1669 AT+NWKSKEY: Get or Set the Network Session Key
1670 )))
1671
1672 (((
1673 AT+APPSKEY:  Get or Set the Application Session Key
1674 )))
1675
1676 (((
1677 AT+APPEUI:  Get or Set the Application EUI
1678 )))
1679
1680 (((
1681 AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1682 )))
1683
1684 (((
1685 AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1686 )))
1687
1688 (((
1689 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1690 )))
1691
1692 (((
1693 AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1694 )))
1695
1696 (((
1697 AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1698 )))
1699
1700 (((
1701 AT+RX2FQ: Get or Set the Rx2 window frequency
1702 )))
1703
1704 (((
1705 AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1706 )))
1707
1708 (((
1709 AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1710 )))
1711
1712 (((
1713 AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1714 )))
1715
1716 (((
1717 AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1718 )))
1719
1720 (((
1721 AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1722 )))
1723
1724 (((
1725 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1726 )))
1727
1728 (((
1729 AT+NWKID: Get or Set the Network ID
1730 )))
1731
1732 (((
1733 AT+FCU: Get or Set the Frame Counter Uplink
1734 )))
1735
1736 (((
1737 AT+FCD: Get or Set the Frame Counter Downlink
1738 )))
1739
1740 (((
1741 AT+CLASS: Get or Set the Device Class
1742 )))
1743
1744 (((
1745 AT+JOIN: Join network
1746 )))
1747
1748 (((
1749 AT+NJS: Get OTAA Join Status
1750 )))
1751
1752 (((
1753 AT+SENDB: Send hexadecimal data along with the application port
1754 )))
1755
1756 (((
1757 AT+SEND: Send text data along with the application port
1758 )))
1759
1760 (((
1761 AT+RECVB: Print last received data in binary format (with hexadecimal values)
1762 )))
1763
1764 (((
1765 AT+RECV: Print last received data in raw format
1766 )))
1767
1768 (((
1769 AT+VER:  Get current image version and Frequency Band
1770 )))
1771
1772 (((
1773 AT+CFM: Get or Set the confirmation mode (0-1)
1774 )))
1775
1776 (((
1777 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1778 )))
1779
1780 (((
1781 AT+SNR: Get the SNR of the last received packet
1782 )))
1783
1784 (((
1785 AT+RSSI: Get the RSSI of the last received packet
1786 )))
1787
1788 (((
1789 AT+TDC: Get or set the application data transmission interval in ms
1790 )))
1791
1792 (((
1793 AT+PORT: Get or set the application port
1794 )))
1795
1796 (((
1797 AT+DISAT: Disable AT commands
1798 )))
1799
1800 (((
1801 AT+PWORD: Set password, max 9 digits
1802 )))
1803
1804 (((
1805 AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1806 )))
1807
1808 (((
1809 AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1810 )))
1811
1812 (((
1813 AT+CFG: Print all settings
1814 )))
1815
1816
1817 == 4.2 Common AT Command Sequence ==
1818
1819 === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1820
1821 (((
1822
1823
1824 (((
1825 (% style="color:blue" %)**If device has not joined network yet:**
1826 )))
1827 )))
1828
1829 (((
1830 (% style="background-color:#dcdcdc" %)**123456**
1831 )))
1832
1833 (((
1834 (% style="background-color:#dcdcdc" %)**AT+FDR**
1835 )))
1836
1837 (((
1838 (% style="background-color:#dcdcdc" %)**123456**
1839 )))
1840
1841 (((
1842 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1843 )))
1844
1845 (((
1846 (% style="background-color:#dcdcdc" %)**ATZ**
1847 )))
1848
1849
1850 (((
1851 (% style="color:blue" %)**If device already joined network:**
1852 )))
1853
1854 (((
1855 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1856 )))
1857
1858 (((
1859 (% style="background-color:#dcdcdc" %)**ATZ**
1860 )))
1861
1862
1863 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1864
1865 (((
1866
1867
1868 (((
1869 (% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1870 )))
1871 )))
1872
1873 (((
1874 (% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
1875 )))
1876
1877 (((
1878 (% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1879 )))
1880
1881 (((
1882 (% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
1883 )))
1884
1885 (((
1886 (% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
1887 )))
1888
1889 (((
1890 (% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
1891 )))
1892
1893 (((
1894 (% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
1895 )))
1896
1897 (((
1898 (% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
1899 )))
1900
1901 (((
1902 (% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
1903 )))
1904
1905 (((
1906 (% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
1907 )))
1908
1909 (((
1910 (% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
1911 )))
1912
1913 (((
1914 (% 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.
1915 )))
1916
1917 (((
1918 (% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
1919
1920
1921 )))
1922
1923 (((
1924 (% style="color:red" %)**Note:**
1925 )))
1926
1927 (((
1928 **~1. Make sure the device is set to ABP mode in the IoT Server.**
1929
1930 **2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
1931
1932 **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?
1933 dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1934
1935 **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.**
1936
1937
1938 )))
1939
1940 (((
1941 [[image:1653359097980-169.png||height="188" width="729"]]
1942 )))
1943
1944 (((
1945
1946 )))
1947
1948 === 4.2.3 Change to Class A ===
1949
1950
1951 (((
1952 (% style="color:blue" %)**If sensor JOINED:**
1953
1954 (% style="background-color:#dcdcdc" %)**AT+CLASS=A
1955 ATZ**
1956 )))
1957
1958
1959 = 5. Case Study =
1960
1961 == 5.1 Counting how many objects pass in Flow Line ==
1962
1963
1964 Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
1965
1966
1967 = 6. FAQ =
1968
1969 == 6.1 How to upgrade the image? ==
1970
1971
1972 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1973
1974 * Support new features
1975 * For bug fix
1976 * Change LoRaWAN bands.
1977
1978 Below shows the hardware connection for how to upload an image to the LT:
1979
1980 [[image:1653359603330-121.png]]
1981
1982
1983 (((
1984 (% 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]].
1985 (% 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]].
1986 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
1987
1988
1989 (((
1990 (% style="color:blue" %)**For LT-22222-L**(%%):
1991 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.
1992 )))
1993
1994
1995 )))
1996
1997 [[image:image-20220524103407-12.png]]
1998
1999
2000 [[image:image-20220524103429-13.png]]
2001
2002
2003 [[image:image-20220524104033-15.png]]
2004
2005
2006 (% 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:
2007
2008
2009 [[image:1653360054704-518.png||height="186" width="745"]]
2010
2011
2012 (((
2013 (((
2014 == 6.2 How to change the LoRa Frequency Bands/Region? ==
2015
2016
2017 )))
2018 )))
2019
2020 (((
2021 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2022 )))
2023
2024 (((
2025
2026
2027 == 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2028
2029
2030 )))
2031
2032 (((
2033 (((
2034 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2035 )))
2036 )))
2037
2038 (((
2039 (((
2040 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2041
2042
2043 )))
2044 )))
2045
2046 (((
2047 (% 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.
2048
2049
2050 )))
2051
2052 (((
2053 [[image:1653360231087-571.png||height="401" width="727"]]
2054
2055
2056 )))
2057
2058 (((
2059 (% 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.**
2060 )))
2061
2062
2063
2064 (((
2065 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2066
2067
2068 )))
2069
2070 (((
2071 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2072 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2073 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2074 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2075 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2076 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2077 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2078 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2079 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2080 )))
2081
2082
2083 (((
2084 As shown in below:
2085 )))
2086
2087 [[image:1653360498588-932.png||height="485" width="726"]]
2088
2089
2090 == 6.4 How to change the uplink interval？ ==
2091
2092
2093 Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/]]
2094
2095
2096 == 6.5 Can I see counting event in Serial? ==
2097
2098
2099 (((
2100 User can run AT+DEBUG command to see the counting event in serial. If firmware too old and doesn't support AT+DEBUG. User can update to latest firmware first.
2101
2102
2103 == 6.6 Can i use point to point communication for LT-22222-L? ==
2104
2105
2106 Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]  ，this is [[firmware>>https://github.com/dragino/LT-22222-L/releases]].
2107
2108
2109 )))
2110
2111 (((
2112 == 6.7 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2113
2114
2115 If the device is not shut down, but directly powered off.
2116
2117 It will default that this is a power-off state.
2118
2119 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2120
2121 After restart, the status before power failure will be read from flash.
2122
2123
2124 == 6.8 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2125
2126
2127 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2128
2129
2130 [[image:image-20221006170630-1.png||height="610" width="945"]]
2131
2132
2133 == 6.9 Can LT22222-L save RO state? ==
2134
2135
2136 Firmware version needs to be no less than 1.6.0.
2137
2138
2139 = 7. Trouble Shooting =
2140 )))
2141
2142 (((
2143 (((
2144 == 7.1 Downlink doesn't work, how to solve it? ==
2145
2146
2147 )))
2148 )))
2149
2150 (((
2151 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2152 )))
2153
2154 (((
2155
2156
2157 == 7.2 Have trouble to upload image. ==
2158
2159
2160 )))
2161
2162 (((
2163 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2164 )))
2165
2166 (((
2167
2168
2169 == 7.3 Why I can't join TTN in US915 /AU915 bands? ==
2170
2171
2172 )))
2173
2174 (((
2175 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2176 )))
2177
2178
2179 = 8. Order Info =
2180
2181
2182 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2183
2184 (% style="color:#4f81bd" %)**XXX:**
2185
2186 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2187 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2188 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2189 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2190 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2191 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2192 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2193 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2194 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2195
2196
2197 = 9. Packing Info =
2198
2199
2200 **Package Includes**:
2201
2202 * LT-22222-L I/O Controller x 1
2203 * Stick Antenna for LoRa RF part x 1
2204 * Bracket for controller x1
2205 * Program cable x 1
2206
2207 **Dimension and weight**:
2208
2209 * Device Size: 13.5 x 7 x 3 cm
2210 * Device Weight: 105g
2211 * Package Size / pcs : 14.5 x 8 x 5 cm
2212 * Weight / pcs : 170g
2213
2214
2215 = 10. Support =
2216
2217
2218 * (((
2219 Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
2220 )))
2221 * (((
2222 Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
2223
2224
2225
2226 )))
2227
2228 = 11. Reference​​​​​ =
2229
2230
2231 * LT-22222-L: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]
2232 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2233 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]