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Version 106.1 by Bei Jinggeng on 2022/11/18 10:02
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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
19 == 1.1 What is LT Series I/O Controller ==
20
21 (((
22
23
24 (((
25 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.
26 )))
27 )))
28
29 (((
30 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.
31 )))
32
33 (((
34 The LT I/O Controllers is aiming to provide an (% style="color:blue" %)**easy and low cost installation** (%%)by using LoRa wireless technology.
35 )))
36
37 (((
38 The use environment includes:
39 )))
40
41 (((
42 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.
43 )))
44
45 (((
46 2) User can set up a LoRaWAN gateway locally and configure the controller to connect to the gateway via wireless.
47
48
49 )))
50
51 (((
52 [[image:1653295757274-912.png]]
53
54
55 )))
56
57
58 == 1.2  Specifications ==
59
60 (((
61
62
63 (% style="color:#037691" %)**Hardware System:**
64 )))
65
66 * (((
67 STM32L072xxxx MCU
68 )))
69 * (((
70 SX1276/78 Wireless Chip 
71 )))
72 * (((
73 (((
74 Power Consumption:
75 )))
76
77 * (((
78 Idle: 4mA@12v
79 )))
80 * (((
81 20dB Transmit: 34mA@12v
82 )))
83 )))
84
85 (((
86
87
88 (% style="color:#037691" %)**Interface for Model: LT22222-L:**
89 )))
90
91 * (((
92 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
93 )))
94 * (((
95 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
96 )))
97 * (((
98 2 x Relay Output (5A@250VAC / 30VDC)
99 )))
100 * (((
101 2 x 0~~20mA Analog Input (res:0.01mA)
102 )))
103 * (((
104 2 x 0~~30V Analog Input (res:0.01v)
105 )))
106 * (((
107 Power Input 7~~ 24V DC. 
108 )))
109
110 (((
111
112
113 (% style="color:#037691" %)**LoRa Spec:**
114 )))
115
116 * (((
117 (((
118 Frequency Range:
119 )))
120
121 * (((
122 Band 1 (HF): 862 ~~ 1020 Mhz
123 )))
124 * (((
125 Band 2 (LF): 410 ~~ 528 Mhz
126 )))
127 )))
128 * (((
129 168 dB maximum link budget.
130 )))
131 * (((
132 +20 dBm - 100 mW constant RF output vs.
133 )))
134 * (((
135 +14 dBm high efficiency PA.
136 )))
137 * (((
138 Programmable bit rate up to 300 kbps.
139 )))
140 * (((
141 High sensitivity: down to -148 dBm.
142 )))
143 * (((
144 Bullet-proof front end: IIP3 = -12.5 dBm.
145 )))
146 * (((
147 Excellent blocking immunity.
148 )))
149 * (((
150 Low RX current of 10.3 mA, 200 nA register retention.
151 )))
152 * (((
153 Fully integrated synthesizer with a resolution of 61 Hz.
154 )))
155 * (((
156 FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
157 )))
158 * (((
159 Built-in bit synchronizer for clock recovery.
160 )))
161 * (((
162 Preamble detection.
163 )))
164 * (((
165 127 dB Dynamic Range RSSI.
166 )))
167 * (((
168 Automatic RF Sense and CAD with ultra-fast AFC.
169 )))
170 * (((
171 Packet engine up to 256 bytes with CRC.
172
173
174
175
176 )))
177
178 == 1.3 Features ==
179
180
181 * LoRaWAN Class A & Class C protocol
182 * Optional Customized LoRa Protocol
183 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
184 * AT Commands to change parameters
185 * Remote configure parameters via LoRa Downlink
186 * Firmware upgradable via program port
187 * Counting
188
189
190 == 1.4  Applications ==
191
192
193 * Smart Buildings & Home Automation
194 * Logistics and Supply Chain Management
195 * Smart Metering
196 * Smart Agriculture
197 * Smart Cities
198 * Smart Factory
199
200
201 == 1.5 Hardware Variants ==
202
203
204 (% border="1" style="background-color:#f7faff; width:500px" %)
205 |(% style="width:103px" %)**Model**|(% style="width:131px" %)**Photo**|(% style="width:334px" %)**Description**
206 |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)[[image:1653296302983-697.png]]|(% style="width:334px" %)(((
207 * 2 x Digital Input (Bi-direction)
208 * 2 x Digital Output
209 * 2 x Relay Output (5A@250VAC / 30VDC)
210 * 2 x 0~~20mA Analog Input (res:0.01mA)
211 * 2 x 0~~30V Analog Input (res:0.01v)
212 * 1 x Counting Port
213 )))
214
215
216 = 2. Power ON Device =
217
218
219 (((
220 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.
221 )))
222
223 (((
224 PWR will on when device is properly powered.
225
226
227 )))
228
229 [[image:1653297104069-180.png]]
230
231
232
233 = 3. Operation Mode =
234
235
236 == 3.1 How it works? ==
237
238
239 (((
240 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. 
241 )))
242
243 (((
244 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.
245 )))
246
247
248
249 == 3.2 Example to join LoRaWAN network ==
250
251
252 (((
253 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. 
254
255
256 )))
257
258 [[image:image-20220523172350-1.png||height="266" width="864"]]
259
260
261 (((
262 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:
263
264
265 )))
266
267 (((
268 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
269 )))
270
271 (((
272 Each LT is shipped with a sticker with the default device EUI as below:
273 )))
274
275 [[image:1653297924498-393.png]]
276
277
278 Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
279
280 **Add APP EUI in the application.**
281
282 [[image:1653297955910-247.png||height="321" width="716"]]
283
284
285 **Add APP KEY and DEV EUI**
286
287 [[image:1653298023685-319.png]]
288
289
290
291 (((
292 (% 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.
293
294
295 )))
296
297 [[image:1653298044601-602.png||height="405" width="709"]]
298
299
300
301 == 3.3 Uplink Payload ==
302
303
304 There are five working modes + one interrupt mode on LT for different type application:
305
306 * (% style="color:blue" %)**MOD1**(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
307 * (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO
308 * (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO
309 * (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
310 * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
311 * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
312
313
314 === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
315
316
317 (((
318 The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
319 )))
320
321 [[image:image-20220523174024-3.png]]
322
323 (((
324
325
326 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
327 )))
328
329 [[image:image-20220523174254-4.png]]
330
331 * RO is for relay. ROx=1 : close，ROx=0 always open.
332 * DI is for digital input. DIx=1: high or float, DIx=0: low.
333 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
334
335 (% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
336
337 For example if payload is: [[image:image-20220523175847-2.png]]
338
339
340 **The value for the interface is:  **
341
342 AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
343
344 AVI2 channel voltage is 0x04AC/1000=1.196V
345
346 ACI1 channel current is 0x1310/1000=4.880mA
347
348 ACI2 channel current is 0x1300/1000=4.864mA
349
350 The last byte 0xAA= 10101010(B) means
351
352 * [1] RO1 relay channel is close and the RO1 LED is ON.
353 * [0] RO2 relay channel is open and RO2 LED is OFF;
354
355 **LT22222-L:**
356
357 * [1] DI2 channel is high input and DI2 LED is ON;
358 * [0] DI1 channel is low input;
359
360 * [0] DO3 channel output state
361 ** DO3 is float in case no load between DO3 and V+.;
362 ** DO3 is high in case there is load between DO3 and V+.
363 ** DO3 LED is off in both case
364 * [1] DO2 channel output is low and DO2 LED is ON.
365 * [0] DO1 channel output state
366 ** DO1 is float in case no load between DO1 and V+.;
367 ** DO1 is high in case there is load between DO1 and V+.
368 ** DO1 LED is off in both case
369
370
371 === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
372
373
374 (((
375 **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
376 )))
377
378 (((
379 Total : 11 bytes payload
380 )))
381
382 [[image:image-20220523180452-3.png]]
383
384
385 (((
386 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
387 )))
388
389 [[image:image-20220523180506-4.png]]
390
391 * RO is for relay. ROx=1 : close，ROx=0 always open.
392 * FIRST: Indicate this is the first packet after join network.
393 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
394
395 (((
396 (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
397 )))
398
399 (((
400
401
402 **To use counting mode, please run:**
403 )))
404
405 (% class="box infomessage" %)
406 (((
407 (((
408 (((
409 **AT+MOD=2**
410 )))
411
412 (((
413 **ATZ**
414 )))
415 )))
416 )))
417
418 (((
419
420
421 (% style="color:#4f81bd" %)**AT Commands for counting:**
422
423
424 )))
425
426 (((
427 **For LT22222-L:**
428
429
430 (% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
431
432 (% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
433
434 (% style="color:blue" %)**AT+TRIG2=0,100**(%%)**  (set DI2 port to trigger on low level, valid signal is 100ms) **
435
436 (% style="color:blue" %)**AT+TRIG2=1,100**(%%)**  (set DI2 port to trigger on high level, valid signal is 100ms ) **
437
438 (% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set COUNT1 value to 60)**
439
440 (% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set COUNT2 value to 60)**
441 )))
442
443
444
445 === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
446
447
448 **LT22222-L**: This mode the DI1 is used as a counting pin.
449
450 [[image:image-20220523181246-5.png]]
451
452 (((
453
454
455 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
456 )))
457
458 [[image:image-20220523181301-6.png]]
459
460 * RO is for relay. ROx=1 : close，ROx=0 always open.
461 * FIRST: Indicate this is the first packet after join network.
462 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
463
464 (((
465 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
466 )))
467
468
469 (((
470 **To use counting mode, please run:**
471 )))
472
473 (% class="box infomessage" %)
474 (((
475 (((
476 (((
477 **AT+MOD=3**
478 )))
479
480 (((
481 **ATZ**
482 )))
483 )))
484 )))
485
486 (((
487 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
488 )))
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
561 === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
562
563
564 **LT22222-L**: This mode the DI1 is used as a counting pin.
565
566 [[image:image-20220523182334-9.png]]
567
568 (((
569
570
571 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
572 )))
573
574 * RO is for relay. ROx=1 : close，ROx=0 always open.
575 * FIRST: Indicate this is the first packet after join network.
576 * (((
577 DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
578 )))
579
580 (((
581 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
582 )))
583
584 (((
585
586
587 **To use this mode, please run:**
588 )))
589
590 (% class="box infomessage" %)
591 (((
592 (((
593 (((
594 **AT+MOD=5**
595 )))
596
597 (((
598 **ATZ**
599 )))
600 )))
601 )))
602
603 (((
604 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
605 )))
606
607
608
609 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
610
611
612 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
613
614 For example, if user has configured below commands:
615
616 * **AT+MOD=1 ** **~-~->**  The normal working mode
617 * **AT+ADDMOD6=1**   **~-~->**  Enable trigger
618
619 LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
620
621 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
622 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.**
623
624 (% style="color:#037691" %)**AT Command to set Trigger Condition**:
625
626
627 (% style="color:#4f81bd" %)**Trigger base on voltage**:
628
629 Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
630
631
632 **Example:**
633
634 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)
635
636 AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
637
638
639
640 (% style="color:#4f81bd" %)**Trigger base on current**:
641
642 Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
643
644
645 **Example:**
646
647 AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
648
649
650
651 (% style="color:#4f81bd" %)**Trigger base on DI status**:
652
653 DI status trigger Flag.
654
655 Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
656
657
658 **Example:**
659
660 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
661
662
663
664 (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
665
666 Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
667
668 Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
669
670 AA: Code for this downlink Command:
671
672 xx: 0: Limit for AV1 and AV2;  1: limit for AC1 and AC2 ; 2 DI1, DI2 trigger enable/disable
673
674 yy1 yy1: AC1 or AV1 low limit or DI1/DI2 trigger status.
675
676 yy2 yy2: AC1 or AV1 high limit.
677
678 yy3 yy3: AC2 or AV2 low limit.
679
680 Yy4 yy4: AC2 or AV2 high limit.
681
682
683 **Example1**: AA 00 13 88 00 00 00 00 00 00
684
685 Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
686
687
688 **Example2**: AA 02 01 00
689
690 Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
691
692
693
694 (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
695
696 MOD6 Payload : total 11 bytes payload
697
698 [[image:image-20220524085923-1.png]]
699
700
701 (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
702
703 [[image:image-20220524090106-2.png]]
704
705 * Each bits shows if the corresponding trigger has been configured.
706
707 **Example:**
708
709 10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
710
711
712
713 (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
714
715 [[image:image-20220524090249-3.png]]
716
717 * Each bits shows which status has been trigger on this uplink.
718
719 **Example:**
720
721 10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
722
723
724
725 (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
726
727 [[image:image-20220524090456-4.png]]
728
729 * Each bits shows which status has been trigger on this uplink.
730
731 **Example:**
732
733 00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
734
735 00000101: Means both DI1 and DI2 trigger are enabled.
736
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
749 === 3.3.7 Payload Decoder ===
750
751 (((
752
753
754 **Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
755 )))
756
757
758
759 == 3.4 ​Configure LT via AT or Downlink ==
760
761
762 (((
763 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
764 )))
765
766 (((
767 (((
768 There are two kinds of Commands:
769 )))
770 )))
771
772 * (% 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]]
773
774 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
775
776
777 === 3.4.1 Common Commands ===
778
779
780 (((
781 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]]
782 )))
783
784
785
786 === 3.4.2 Sensor related commands ===
787
788
789 ==== 3.4.2.1 Set Transmit Interval ====
790
791
792 Set device uplink interval.
793
794 * (% style="color:#037691" %)**AT Command:**
795
796 (% style="color:blue" %)**AT+TDC=N **
797
798
799 **Example: **AT+TDC=30000. Means set interval to 30 seconds
800
801
802 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
803
804 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
805
806
807
808 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
809
810
811 Set work mode.
812
813 * (% style="color:#037691" %)**AT Command:**
814
815 (% style="color:blue" %)**AT+MOD=N  **
816
817
818 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
819
820
821 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
822
823 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
824
825
826
827 ==== 3.4.2.3 Poll an uplink ====
828
829
830 * (% style="color:#037691" %)**AT Command:**
831
832 There is no AT Command to poll uplink
833
834
835 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
836
837 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
838
839
840 **Example**: 0x08FF, ask device to send an Uplink
841
842
843
844 ==== 3.4.2.4 Enable Trigger Mode ====
845
846
847 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
848
849 * (% style="color:#037691" %)**AT Command:**
850
851 (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
852
853 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
854
855 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
856
857
858 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
859
860 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
861
862
863
864
865 ==== 3.4.2.5 Poll trigger settings ====
866
867
868 Poll trigger settings,
869
870 * (% style="color:#037691" %)**AT Command:**
871
872 There is no AT Command for this feature.
873
874
875 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
876
877 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
878
879
880
881 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
882
883
884 Enable Disable DI1/DI2/DI2 as trigger,
885
886 * (% style="color:#037691" %)**AT Command:**
887
888 (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
889
890
891 **Example:**
892
893 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
894
895 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
896
897 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
898
899
900
901 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
902
903
904 Set DI1 or DI3(for LT-33222-L) trigger.
905
906 * (% style="color:#037691" %)**AT Command:**
907
908 (% style="color:blue" %)**AT+TRIG1=a,b**
909
910 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
911
912 (% style="color:red" %)**b :** (%%)delay timing.
913
914
915 **Example:**
916
917 AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
918
919
920 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
921
922 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
923
924
925
926 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
927
928
929 Set DI2 trigger.
930
931 * (% style="color:#037691" %)**AT Command:**
932
933 (% style="color:blue" %)**AT+TRIG2=a,b**
934
935 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
936
937 (% style="color:red" %)**b :** (%%)delay timing.
938
939
940 **Example:**
941
942 AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
943
944
945 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
946
947 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG1=aa,0x(bb cc)
948
949
950
951 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
952
953
954 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
955
956 * (% style="color:#037691" %)**AT Command**
957
958 (% style="color:blue" %)**AT+ACLIM**
959
960
961 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
962
963 (% 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"]]
964
965
966
967 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
968
969
970 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
971
972 * (% style="color:#037691" %)**AT Command**
973
974 (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
975
976
977 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
978
979 (% 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"]]
980
981
982
983 ==== 3.4.2.11 Trigger – Set minimum interval ====
984
985
986 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
987
988 * (% style="color:#037691" %)**AT Command**
989
990 (% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
991
992
993 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
994
995 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
996
997 (((
998
999
1000 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
1001 )))
1002
1003
1004
1005 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1006
1007
1008 * (% style="color:#037691" %)**AT Command**
1009
1010 There is no AT Command to control Digital Output
1011
1012
1013 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1014 * (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1015
1016 (((
1017 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1018 )))
1019
1020 (((
1021 01: Low,  00: High ,  11: No action
1022 )))
1023
1024 [[image:image-20220524092754-5.png]]
1025
1026 (((
1027 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1028 )))
1029
1030 (((
1031 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1032 )))
1033
1034
1035
1036 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1037
1038
1039 * (% style="color:#037691" %)**AT Command**
1040
1041 There is no AT Command to control Digital Output
1042
1043
1044 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1045
1046 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1047
1048
1049 This is to control the digital output time of DO pin. Include four bytes:
1050
1051 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1052
1053 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1054
1055 01: DO pins will change back to original state after timeout.
1056
1057 00: DO pins will change to an inverter state after timeout 
1058
1059
1060 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1061
1062 [[image:image-20220524093238-6.png]]
1063
1064
1065 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1066
1067 [[image:image-20220524093328-7.png]]
1068
1069
1070 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1071
1072 [[image:image-20220524093351-8.png]]
1073
1074
1075 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
1076
1077 Latching time. Unit: ms
1078
1079 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1080
1081
1082 **Example payload:**
1083
1084 **~1. A9 01 01 01 01 07 D0**
1085
1086 DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
1087
1088 **2. A9 01 00 01 11 07 D0**
1089
1090 DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
1091
1092 **3. A9 00 00 00 00 07 D0**
1093
1094 DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
1095
1096 **4. A9 00 11 01 00 07 D0**
1097
1098 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
1099
1100
1101
1102 ==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
1103
1104
1105 * (% style="color:#037691" %)**AT Command:**
1106
1107 There is no AT Command to control Relay Output
1108
1109
1110 * (% style="color:#037691" %)**Downlink Payload (prefix 0x03):**
1111
1112 (% style="color:blue" %)**0x03 aa bb     ** (%%)~/~/ Set RO1/RO2 output
1113
1114
1115 (((
1116 If payload = 0x030100, it means set RO1 to close and RO2 to open.
1117 )))
1118
1119 (((
1120 01: Close ,  00: Open , 11: No action
1121 )))
1122
1123 (((
1124 [[image:image-20220524093724-9.png]]
1125 )))
1126
1127 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1128
1129
1130
1131
1132 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1133
1134
1135 * (% style="color:#037691" %)**AT Command:**
1136
1137 There is no AT Command to control Relay Output
1138
1139
1140 * (% style="color:#037691" %)**Downlink Payload (prefix 0x05):**
1141
1142 (% style="color:blue" %)**0x05 aa bb cc dd     ** (%%)~/~/ Set RO1/RO2 relay with time control
1143
1144
1145 This is to control the relay output time of relay. Include four bytes:
1146
1147 (% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
1148
1149 (% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
1150
1151 01: Relays will change back to original state after timeout.
1152
1153 00: Relays will change to an inverter state after timeout
1154
1155
1156 (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1157
1158 [[image:image-20221008095908-1.png||height="364" width="564"]]
1159
1160
1161 (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1162
1163 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1164
1165
1166 **Example payload:**
1167
1168 **~1. 05 01 11 07 D**
1169
1170 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1171
1172 **2. 05 01 10 07 D0**
1173
1174 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1175
1176 **3. 05 00 01 07 D0**
1177
1178 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1179
1180 **4. 05 00 00 07 D0**
1181
1182 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1183
1184
1185
1186 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1187
1188
1189 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1190
1191 * (% style="color:#037691" %)**AT Command:**
1192
1193 (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1194
1195
1196 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1197
1198 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1199
1200
1201
1202 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1203
1204
1205 * (% style="color:#037691" %)**AT Command:**
1206
1207 (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1208
1209 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1210
1211 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1212
1213
1214 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1215
1216 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1217
1218
1219
1220 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1221
1222
1223 Clear counting for counting mode
1224
1225 * (% style="color:#037691" %)**AT Command:**
1226
1227 (% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1228
1229
1230 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1231
1232 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1233
1234
1235
1236 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1237
1238
1239 * (% style="color:#037691" %)**AT Command:**
1240
1241 (% 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)
1242
1243
1244 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1245
1246 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1247
1248 (((
1249 range: aa bb cc:0 to 16777215,  (unit:second)
1250 )))
1251
1252
1253
1254 ==== 3.4.2.20 Reset save RO DO state ====
1255
1256
1257 * (% style="color:#037691" %)**AT Command:**
1258
1259 (% style="color:blue" %)**AT+RODORET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1260
1261 (% style="color:blue" %)**AT+RODORET=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.
1262
1263
1264 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1265
1266 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1267
1268
1269
1270 ==== 3.4.2.21 Encrypted payload ====
1271
1272
1273 * (% style="color:#037691" %)**AT Command:**
1274
1275 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1276
1277 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1278
1279
1280
1281 ==== 3.4.2.22 Get sensor value ====
1282
1283
1284 * (% style="color:#037691" %)**AT Command:**
1285
1286 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1287
1288 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1289
1290
1291
1292 ==== 3.4.2.23 Resets the downlink packet count ====
1293
1294
1295 * (% style="color:#037691" %)**AT Command:**
1296
1297 (% 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)
1298
1299 (% 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.
1300
1301
1302
1303
1304 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1305
1306
1307 * (% style="color:#037691" %)**AT Command:**
1308
1309 (% 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)
1310
1311 (% 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.
1312
1313
1314 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1315
1316 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1317
1318
1319
1320
1321 ==== 3.4.2.25 Copy downlink to uplink ====
1322
1323
1324 * (% style="color:#037691" %)**AT Command**(%%)**:**
1325
1326 (% 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.
1327
1328 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.
1329
1330
1331 [[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"]]
1332
1333 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1334
1335
1336
1337 [[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"]]
1338
1339 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1340
1341
1342
1343 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1344
1345
1346 * (((
1347 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1348
1349 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1350
1351
1352 )))
1353
1354 **Example：**
1355
1356 [[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"]]
1357
1358
1359
1360 == 3.5 Integrate with Mydevice ==
1361
1362
1363 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:
1364
1365 (((
1366 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1367 )))
1368
1369 (((
1370 (% 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:
1371
1372
1373 )))
1374
1375 [[image:image-20220719105525-1.png||height="377" width="677"]]
1376
1377
1378
1379 [[image:image-20220719110247-2.png||height="388" width="683"]]
1380
1381
1382 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1383
1384 (% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1385
1386 Search under The things network
1387
1388 [[image:1653356838789-523.png||height="337" width="740"]]
1389
1390
1391
1392 After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1393
1394 [[image:image-20220524094909-1.png||height="335" width="729"]]
1395
1396
1397 [[image:image-20220524094909-2.png||height="337" width="729"]]
1398
1399
1400 [[image:image-20220524094909-3.png||height="338" width="727"]]
1401
1402
1403 [[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1404
1405
1406 [[image:image-20220524094909-5.png||height="341" width="734"]]
1407
1408
1409
1410 == 3.6 Interface Detail ==
1411
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
1422 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1423
1424
1425 (((
1426 The DI port of LT-22222-L can support NPN or PNP output sensor.
1427 )))
1428
1429 (((
1430 (((
1431 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.
1432
1433
1434 )))
1435 )))
1436
1437 [[image:1653357170703-587.png]]
1438
1439 (((
1440 (((
1441 When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1442 )))
1443 )))
1444
1445 (((
1446
1447 )))
1448
1449 (((
1450 (% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1451 )))
1452
1453 (((
1454 This type of sensor will output a low signal GND when active.
1455 )))
1456
1457 * (((
1458 Connect sensor's output to DI1-
1459 )))
1460 * (((
1461 Connect sensor's VCC to DI1+.
1462 )))
1463
1464 (((
1465 So when sensor active, the current between NEC2501 pin1 and pin2 is：
1466 )))
1467
1468 (((
1469 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1470 )))
1471
1472 (((
1473 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.
1474 )))
1475
1476 (((
1477
1478
1479
1480 )))
1481
1482 (((
1483 (% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1484 )))
1485
1486 (((
1487 This type of sensor will output a high signal (example 24v) when active.
1488 )))
1489
1490 * (((
1491 Connect sensor's output to DI1+
1492 )))
1493 * (((
1494 Connect sensor's GND DI1-.
1495 )))
1496
1497 (((
1498 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1499 )))
1500
1501 (((
1502 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1503 )))
1504
1505 (((
1506 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.
1507 )))
1508
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
1544 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1545
1546
1547 **NPN output**: GND or Float. Max voltage can apply to output pin is 36v.
1548
1549 Note: DO pins go to float when device is power off.
1550
1551 [[image:1653357531600-905.png]]
1552
1553
1554
1555 === 3.6.4 Analog Input Interface ===
1556
1557
1558 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:
1559
1560
1561 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1562
1563 [[image:1653357592296-182.png]]
1564
1565 Example to connect a 4~~20mA sensor
1566
1567 We take the wind speed sensor as an example for reference only.
1568
1569
1570 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1571
1572 **Red:  12~~24v**
1573
1574 **Yellow:  4~~20mA**
1575
1576 **Black:  GND**
1577
1578
1579 **Connection diagram:**
1580
1581 [[image:1653357640609-758.png]]
1582
1583 [[image:1653357648330-671.png||height="155" width="733"]]
1584
1585
1586
1587 === 3.6.5 Relay Output ===
1588
1589
1590 (((
1591 The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device's Power Line to in serial of RO1_1 and RO_2. Such as below:
1592
1593 **Note**: RO pins go to Open(NO) when device is power off.
1594 )))
1595
1596 [[image:image-20220524100215-9.png]]
1597
1598
1599 [[image:image-20220524100215-10.png||height="382" width="723"]]
1600
1601
1602
1603 == 3.7 LEDs Indicators ==
1604
1605
1606 [[image:image-20220524100748-11.png]]
1607
1608
1609
1610 = 4. Use AT Command =
1611
1612
1613 == 4.1 Access AT Command ==
1614
1615
1616 (((
1617 LT supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LT for using AT command, as below.
1618 )))
1619
1620 (((
1621
1622 )))
1623
1624 [[image:1653358238933-385.png]]
1625
1626
1627 (((
1628 In PC, User needs to set (% style="color:#4f81bd" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**)(%%) to active it. As shown below:
1629 )))
1630
1631 [[image:1653358355238-883.png]]
1632
1633
1634 (((
1635 More detail AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1636 )))
1637
1638 (((
1639 AT+<CMD>?        : Help on <CMD>
1640 )))
1641
1642 (((
1643 AT+<CMD>         : Run <CMD>
1644 )))
1645
1646 (((
1647 AT+<CMD>=<value> : Set the value
1648 )))
1649
1650 (((
1651 AT+<CMD>=?       :  Get the value
1652 )))
1653
1654 (((
1655 ATZ: Trig a reset of the MCU
1656 )))
1657
1658 (((
1659 AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1660 )))
1661
1662 (((
1663 AT+DEUI: Get or Set the Device EUI
1664 )))
1665
1666 (((
1667 AT+DADDR: Get or Set the Device Address
1668 )))
1669
1670 (((
1671 AT+APPKEY: Get or Set the Application Key
1672 )))
1673
1674 (((
1675 AT+NWKSKEY: Get or Set the Network Session Key
1676 )))
1677
1678 (((
1679 AT+APPSKEY:  Get or Set the Application Session Key
1680 )))
1681
1682 (((
1683 AT+APPEUI:  Get or Set the Application EUI
1684 )))
1685
1686 (((
1687 AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1688 )))
1689
1690 (((
1691 AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1692 )))
1693
1694 (((
1695 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1696 )))
1697
1698 (((
1699 AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1700 )))
1701
1702 (((
1703 AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1704 )))
1705
1706 (((
1707 AT+RX2FQ: Get or Set the Rx2 window frequency
1708 )))
1709
1710 (((
1711 AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1712 )))
1713
1714 (((
1715 AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1716 )))
1717
1718 (((
1719 AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1720 )))
1721
1722 (((
1723 AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1724 )))
1725
1726 (((
1727 AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1728 )))
1729
1730 (((
1731 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1732 )))
1733
1734 (((
1735 AT+NWKID: Get or Set the Network ID
1736 )))
1737
1738 (((
1739 AT+FCU: Get or Set the Frame Counter Uplink
1740 )))
1741
1742 (((
1743 AT+FCD: Get or Set the Frame Counter Downlink
1744 )))
1745
1746 (((
1747 AT+CLASS: Get or Set the Device Class
1748 )))
1749
1750 (((
1751 AT+JOIN: Join network
1752 )))
1753
1754 (((
1755 AT+NJS: Get OTAA Join Status
1756 )))
1757
1758 (((
1759 AT+SENDB: Send hexadecimal data along with the application port
1760 )))
1761
1762 (((
1763 AT+SEND: Send text data along with the application port
1764 )))
1765
1766 (((
1767 AT+RECVB: Print last received data in binary format (with hexadecimal values)
1768 )))
1769
1770 (((
1771 AT+RECV: Print last received data in raw format
1772 )))
1773
1774 (((
1775 AT+VER:  Get current image version and Frequency Band
1776 )))
1777
1778 (((
1779 AT+CFM: Get or Set the confirmation mode (0-1)
1780 )))
1781
1782 (((
1783 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1784 )))
1785
1786 (((
1787 AT+SNR: Get the SNR of the last received packet
1788 )))
1789
1790 (((
1791 AT+RSSI: Get the RSSI of the last received packet
1792 )))
1793
1794 (((
1795 AT+TDC: Get or set the application data transmission interval in ms
1796 )))
1797
1798 (((
1799 AT+PORT: Get or set the application port
1800 )))
1801
1802 (((
1803 AT+DISAT: Disable AT commands
1804 )))
1805
1806 (((
1807 AT+PWORD: Set password, max 9 digits
1808 )))
1809
1810 (((
1811 AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1812 )))
1813
1814 (((
1815 AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1816 )))
1817
1818 (((
1819 AT+CFG: Print all settings
1820 )))
1821
1822
1823
1824 == 4.2 Common AT Command Sequence ==
1825
1826
1827 === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1828
1829 (((
1830
1831
1832 (((
1833 (% style="color:blue" %)**If device has not joined network yet:**
1834 )))
1835 )))
1836
1837 (((
1838 (% style="background-color:#dcdcdc" %)**123456**
1839 )))
1840
1841 (((
1842 (% style="background-color:#dcdcdc" %)**AT+FDR**
1843 )))
1844
1845 (((
1846 (% style="background-color:#dcdcdc" %)**123456**
1847 )))
1848
1849 (((
1850 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1851 )))
1852
1853 (((
1854 (% style="background-color:#dcdcdc" %)**ATZ**
1855 )))
1856
1857
1858 (((
1859 (% style="color:blue" %)**If device already joined network:**
1860 )))
1861
1862 (((
1863 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1864 )))
1865
1866 (((
1867 (% style="background-color:#dcdcdc" %)**ATZ**
1868 )))
1869
1870
1871
1872 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1873
1874 (((
1875
1876
1877 (((
1878 (% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1879 )))
1880 )))
1881
1882 (((
1883 (% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
1884 )))
1885
1886 (((
1887 (% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1888 )))
1889
1890 (((
1891 (% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
1892 )))
1893
1894 (((
1895 (% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
1896 )))
1897
1898 (((
1899 (% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
1900 )))
1901
1902 (((
1903 (% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
1904 )))
1905
1906 (((
1907 (% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
1908 )))
1909
1910 (((
1911 (% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
1912 )))
1913
1914 (((
1915 (% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
1916 )))
1917
1918 (((
1919 (% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
1920 )))
1921
1922 (((
1923 (% 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.
1924 )))
1925
1926 (((
1927 (% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
1928
1929
1930 )))
1931
1932 (((
1933 (% style="color:red" %)**Note:**
1934 )))
1935
1936 (((
1937 **~1. Make sure the device is set to ABP mode in the IoT Server.**
1938
1939 **2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
1940
1941 **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?
1942 dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1943
1944 **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**
1945
1946
1947 )))
1948
1949 (((
1950 [[image:1653359097980-169.png||height="188" width="729"]]
1951 )))
1952
1953 (((
1954
1955 )))
1956
1957
1958 === 4.2.3 Change to Class A ===
1959
1960
1961 (((
1962 (% style="color:blue" %)**If sensor JOINED:**
1963
1964 (% style="background-color:#dcdcdc" %)**AT+CLASS=A
1965 ATZ**
1966 )))
1967
1968
1969
1970 = 5. FAQ =
1971
1972
1973 == 5.1 How to upgrade the image? ==
1974
1975
1976 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1977
1978 * Support new features
1979 * For bug fix
1980 * Change LoRaWAN bands.
1981
1982 Below shows the hardware connection for how to upload an image to the LT:
1983
1984 [[image:1653359603330-121.png]]
1985
1986
1987 (((
1988 (% style="color:blue" %)**Step1**(%%)**:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1989 (% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:https://www.dropbox.com/sh/g99v0fxcltn9r1y/AADKXQ2v5ZT-S3sxdmbvE7UAa/LT-22222-L/image?dl=0&subfolder_nav_tracking=1]].
1990 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
1991
1992
1993 (((
1994 (% style="color:blue" %)**For LT-22222-L**(%%):
1995 Hold down the PRO button and then momentarily press the RST reset button and the (% style="color:red" %)**DO1 led**(%%) will change from OFF to ON. When (% style="color:red" %)**DO1 LED**(%%) is on, it means the device is in download mode.
1996 )))
1997
1998
1999 )))
2000
2001 [[image:image-20220524103407-12.png]]
2002
2003 [[image:image-20220524103429-13.png]]
2004
2005 [[image:image-20220524104033-15.png]]
2006
2007
2008 (% 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:
2009
2010
2011 [[image:1653360054704-518.png||height="186" width="745"]]
2012
2013
2014 (((
2015 (((
2016
2017
2018 == 5.2 How to change the LoRa Frequency Bands/Region? ==
2019
2020
2021 )))
2022 )))
2023
2024 (((
2025 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2026 )))
2027
2028 (((
2029
2030
2031
2032 == 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2033
2034
2035 )))
2036
2037 (((
2038 (((
2039 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2040 )))
2041 )))
2042
2043 (((
2044 (((
2045 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2046
2047
2048 )))
2049 )))
2050
2051 (((
2052 (% 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.
2053
2054
2055 )))
2056
2057 (((
2058 [[image:1653360231087-571.png||height="401" width="727"]]
2059
2060
2061 )))
2062
2063 (((
2064 (% 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.**
2065 )))
2066
2067
2068
2069 (((
2070 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2071
2072
2073 )))
2074
2075 (((
2076 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2077 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2078 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2079 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2080 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2081 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2082 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2083 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2084 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2085 )))
2086
2087
2088 (((
2089 As shown in below:
2090 )))
2091
2092 [[image:1653360498588-932.png||height="485" width="726"]]
2093
2094
2095
2096 == 5.4 Can I see counting event in Serial? ==
2097
2098
2099 (((
2100 User can run AT+DEBUG command to see the counting event in serial. If firmware too old and doesn't support AT+DEBUG. User can update to latest firmware first.
2101
2102
2103
2104 == 5.5 Can i use point to point communication for LT-22222-L? ==
2105
2106
2107 Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]  ，this is [[firmware>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AADKXQ2v5ZT-S3sxdmbvE7UAa/LT-22222-L/image?dl=0&subfolder_nav_tracking=1]].
2108
2109
2110
2111 )))
2112
2113 (((
2114 == 5.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2115
2116
2117 If the device is not shut down, but directly powered off.
2118
2119 It will default that this is a power-off state.
2120
2121 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2122
2123 After restart, the status before power failure will be read from flash.
2124
2125
2126
2127 == 5.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2128
2129
2130 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2131
2132
2133 [[image:image-20221006170630-1.png||height="610" width="945"]]
2134
2135
2136 == 5.8 Can LT22222-L save RO state? ==
2137
2138
2139 Firmware version needs to be no less than 1.6.0.
2140
2141
2142
2143 = 6. Trouble Shooting =
2144
2145
2146 )))
2147
2148 (((
2149 (((
2150 == 6.1 Downlink doesn't work, how to solve it? ==
2151
2152
2153 )))
2154 )))
2155
2156 (((
2157 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2158 )))
2159
2160 (((
2161
2162
2163
2164 == 6.2 Have trouble to upload image. ==
2165
2166
2167 )))
2168
2169 (((
2170 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2171 )))
2172
2173 (((
2174
2175
2176
2177 == 6.3 Why I can't join TTN in US915 /AU915 bands? ==
2178
2179
2180 )))
2181
2182 (((
2183 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2184 )))
2185
2186
2187
2188 = 7. Order Info =
2189
2190
2191 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2192
2193 (% style="color:#4f81bd" %)**XXX:**
2194
2195 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2196 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2197 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2198 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2199 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2200 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2201 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2202 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2203 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2204
2205
2206 = 8. Packing Info =
2207
2208
2209 **Package Includes**:
2210
2211 * LT-22222-L I/O Controller x 1
2212 * Stick Antenna for LoRa RF part x 1
2213 * Bracket for controller x1
2214 * Program cable x 1
2215
2216 **Dimension and weight**:
2217
2218 * Device Size: 13.5 x 7 x 3 cm
2219 * Device Weight: 105g
2220 * Package Size / pcs : 14.5 x 8 x 5 cm
2221 * Weight / pcs : 170g
2222
2223
2224 = 9. Support =
2225
2226
2227 * (((
2228 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.
2229 )))
2230 * (((
2231 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]]
2232
2233
2234
2235 )))
2236
2237 = 10. Reference​​​​​ =
2238
2239
2240 * 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]]
2241 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2242 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]