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Version 110.1 by Bei Jinggeng on 2022/12/22 09:19
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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 = 3. Operation Mode =
233
234 == 3.1 How it works? ==
235
236
237 (((
238 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. 
239 )))
240
241 (((
242 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.
243 )))
244
245
246 == 3.2 Example to join LoRaWAN network ==
247
248
249 (((
250 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. 
251
252
253 )))
254
255 [[image:image-20220523172350-1.png||height="266" width="864"]]
256
257
258 (((
259 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:
260
261
262 )))
263
264 (((
265 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
266 )))
267
268 (((
269 Each LT is shipped with a sticker with the default device EUI as below:
270 )))
271
272 [[image:1653297924498-393.png]]
273
274
275 Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
276
277 **Add APP EUI in the application.**
278
279 [[image:1653297955910-247.png||height="321" width="716"]]
280
281
282 **Add APP KEY and DEV EUI**
283
284 [[image:1653298023685-319.png]]
285
286
287
288 (((
289 (% 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.
290
291
292 )))
293
294 [[image:1653298044601-602.png||height="405" width="709"]]
295
296
297
298 == 3.3 Uplink Payload ==
299
300
301 There are five working modes + one interrupt mode on LT for different type application:
302
303 * (% style="color:blue" %)**MOD1**(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
304 * (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO
305 * (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO
306 * (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
307 * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
308 * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
309
310
311 === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
312
313
314 (((
315 The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
316 )))
317
318 [[image:image-20220523174024-3.png]]
319
320 (((
321
322
323 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
324 )))
325
326 [[image:image-20220523174254-4.png]]
327
328 * RO is for relay. ROx=1 : close，ROx=0 always open.
329 * DI is for digital input. DIx=1: high or float, DIx=0: low.
330 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
331
332 (% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
333
334 For example if payload is: [[image:image-20220523175847-2.png]]
335
336
337 **The value for the interface is:  **
338
339 AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
340
341 AVI2 channel voltage is 0x04AC/1000=1.196V
342
343 ACI1 channel current is 0x1310/1000=4.880mA
344
345 ACI2 channel current is 0x1300/1000=4.864mA
346
347 The last byte 0xAA= 10101010(B) means
348
349 * [1] RO1 relay channel is close and the RO1 LED is ON.
350 * [0] RO2 relay channel is open and RO2 LED is OFF;
351
352 **LT22222-L:**
353
354 * [1] DI2 channel is high input and DI2 LED is ON;
355 * [0] DI1 channel is low input;
356
357 * [0] DO3 channel output state
358 ** DO3 is float in case no load between DO3 and V+.;
359 ** DO3 is high in case there is load between DO3 and V+.
360 ** DO3 LED is off in both case
361 * [1] DO2 channel output is low and DO2 LED is ON.
362 * [0] DO1 channel output state
363 ** DO1 is float in case no load between DO1 and V+.;
364 ** DO1 is high in case there is load between DO1 and V+.
365 ** DO1 LED is off in both case
366
367
368 === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
369
370
371 (((
372 **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
373 )))
374
375 (((
376 Total : 11 bytes payload
377 )))
378
379 [[image:image-20220523180452-3.png]]
380
381
382 (((
383 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
384 )))
385
386 [[image:image-20220523180506-4.png]]
387
388 * RO is for relay. ROx=1 : close，ROx=0 always open.
389 * FIRST: Indicate this is the first packet after join network.
390 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
391
392 (((
393 (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
394 )))
395
396 (((
397
398
399 **To use counting mode, please run:**
400 )))
401
402 (% class="box infomessage" %)
403 (((
404 (((
405 (((
406 **AT+MOD=2**
407 )))
408
409 (((
410 **ATZ**
411 )))
412 )))
413 )))
414
415 (((
416
417
418 (% style="color:#4f81bd" %)**AT Commands for counting:**
419
420
421 )))
422
423 (((
424 **For LT22222-L:**
425
426
427 (% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
428
429 (% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
430
431 (% style="color:blue" %)**AT+TRIG2=0,100**(%%)**  (set DI2 port to trigger on low level, valid signal is 100ms) **
432
433 (% style="color:blue" %)**AT+TRIG2=1,100**(%%)**  (set DI2 port to trigger on high level, valid signal is 100ms ) **
434
435 (% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set COUNT1 value to 60)**
436
437 (% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set COUNT2 value to 60)**
438 )))
439
440
441 === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
442
443
444 **LT22222-L**: This mode the DI1 is used as a counting pin.
445
446 [[image:image-20220523181246-5.png]]
447
448 (((
449
450
451 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
452 )))
453
454 [[image:image-20220523181301-6.png]]
455
456 * RO is for relay. ROx=1 : close，ROx=0 always open.
457 * FIRST: Indicate this is the first packet after join network.
458 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
459
460 (((
461 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
462 )))
463
464
465 (((
466 **To use counting mode, please run:**
467 )))
468
469 (% class="box infomessage" %)
470 (((
471 (((
472 (((
473 **AT+MOD=3**
474 )))
475
476 (((
477 **ATZ**
478 )))
479 )))
480 )))
481
482 (((
483 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
484 )))
485
486
487 === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
488
489
490 (((
491 **LT22222-L**: This mode the DI1 is used as a counting pin.
492 )))
493
494 (((
495 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.
496 )))
497
498 [[image:image-20220523181903-8.png]]
499
500
501 (((
502 (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
503 )))
504
505 [[image:image-20220523181727-7.png]]
506
507 * RO is for relay. ROx=1 : close，ROx=0 always open.
508 * FIRST: Indicate this is the first packet after join network.
509 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
510
511 (((
512 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
513 )))
514
515 (((
516
517
518 **To use this mode, please run:**
519 )))
520
521 (% class="box infomessage" %)
522 (((
523 (((
524 (((
525 **AT+MOD=4**
526 )))
527
528 (((
529 **ATZ**
530 )))
531 )))
532 )))
533
534
535 (((
536 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
537 )))
538
539 (((
540
541
542 **Plus below command for AVI1 Counting:**
543
544
545 (% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
546
547 (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
548
549 (% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**  (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
550
551 (% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**  (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
552 )))
553
554
555 === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
556
557
558 **LT22222-L**: This mode the DI1 is used as a counting pin.
559
560 [[image:image-20220523182334-9.png]]
561
562 (((
563
564
565 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
566 )))
567
568 * RO is for relay. ROx=1 : close，ROx=0 always open.
569 * FIRST: Indicate this is the first packet after join network.
570 * (((
571 DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
572 )))
573
574 (((
575 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
576 )))
577
578 (((
579
580
581 **To use this mode, please run:**
582 )))
583
584 (% class="box infomessage" %)
585 (((
586 (((
587 (((
588 **AT+MOD=5**
589 )))
590
591 (((
592 **ATZ**
593 )))
594 )))
595 )))
596
597 (((
598 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
599 )))
600
601
602 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
603
604
605 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
606
607 For example, if user has configured below commands:
608
609 * **AT+MOD=1 ** **~-~->**  The normal working mode
610 * **AT+ADDMOD6=1**   **~-~->**  Enable trigger
611
612 LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
613
614 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
615 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.**
616
617 (% style="color:#037691" %)**AT Command to set Trigger Condition**:
618
619
620 (% style="color:#4f81bd" %)**Trigger base on voltage**:
621
622 Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
623
624
625 **Example:**
626
627 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)
628
629 AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
630
631
632
633 (% style="color:#4f81bd" %)**Trigger base on current**:
634
635 Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
636
637
638 **Example:**
639
640 AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
641
642
643
644 (% style="color:#4f81bd" %)**Trigger base on DI status**:
645
646 DI status trigger Flag.
647
648 Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
649
650
651 **Example:**
652
653 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
654
655
656
657 (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
658
659 Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
660
661 Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
662
663 AA: Code for this downlink Command:
664
665 xx: 0: Limit for AV1 and AV2;  1: limit for AC1 and AC2 ; 2 DI1, DI2 trigger enable/disable
666
667 yy1 yy1: AC1 or AV1 low limit or DI1/DI2 trigger status.
668
669 yy2 yy2: AC1 or AV1 high limit.
670
671 yy3 yy3: AC2 or AV2 low limit.
672
673 Yy4 yy4: AC2 or AV2 high limit.
674
675
676 **Example1**: AA 00 13 88 00 00 00 00 00 00
677
678 Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
679
680
681 **Example2**: AA 02 01 00
682
683 Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
684
685
686
687 (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
688
689 MOD6 Payload : total 11 bytes payload
690
691 [[image:image-20220524085923-1.png]]
692
693
694 (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
695
696 [[image:image-20220524090106-2.png]]
697
698 * Each bits shows if the corresponding trigger has been configured.
699
700 **Example:**
701
702 10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
703
704
705
706 (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
707
708 [[image:image-20220524090249-3.png]]
709
710 * Each bits shows which status has been trigger on this uplink.
711
712 **Example:**
713
714 10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
715
716
717
718 (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
719
720 [[image:image-20220524090456-4.png]]
721
722 * Each bits shows which status has been trigger on this uplink.
723
724 **Example:**
725
726 00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
727
728 00000101: Means both DI1 and DI2 trigger are enabled.
729
730
731
732 (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
733
734 Downlink command to poll MOD6 status:
735
736 **AB 06**
737
738 When device got this command, it will send the MOD6 payload.
739
740
741 === 3.3.7 Payload Decoder ===
742
743 (((
744
745
746 **Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
747 )))
748
749
750 == 3.4 ​Configure LT via AT or Downlink ==
751
752
753 (((
754 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
755 )))
756
757 (((
758 (((
759 There are two kinds of Commands:
760 )))
761 )))
762
763 * (% 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]]
764
765 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
766
767
768 === 3.4.1 Common Commands ===
769
770
771 (((
772 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]]
773 )))
774
775
776 === 3.4.2 Sensor related commands ===
777
778 ==== 3.4.2.1 Set Transmit Interval ====
779
780
781 Set device uplink interval.
782
783 * (% style="color:#037691" %)**AT Command:**
784
785 (% style="color:blue" %)**AT+TDC=N **
786
787
788 **Example: **AT+TDC=30000. Means set interval to 30 seconds
789
790
791 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
792
793 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
794
795
796
797 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
798
799
800 Set work mode.
801
802 * (% style="color:#037691" %)**AT Command:**
803
804 (% style="color:blue" %)**AT+MOD=N  **
805
806
807 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
808
809
810 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
811
812 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
813
814
815
816 ==== 3.4.2.3 Poll an uplink ====
817
818
819 * (% style="color:#037691" %)**AT Command:**
820
821 There is no AT Command to poll uplink
822
823
824 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
825
826 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
827
828
829 **Example**: 0x08FF, ask device to send an Uplink
830
831
832
833 ==== 3.4.2.4 Enable Trigger Mode ====
834
835
836 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
837
838 * (% style="color:#037691" %)**AT Command:**
839
840 (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
841
842 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
843
844 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
845
846
847 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
848
849 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
850
851
852
853
854 ==== 3.4.2.5 Poll trigger settings ====
855
856
857 Poll trigger settings,
858
859 * (% style="color:#037691" %)**AT Command:**
860
861 There is no AT Command for this feature.
862
863
864 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
865
866 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
867
868
869
870 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
871
872
873 Enable Disable DI1/DI2/DI2 as trigger,
874
875 * (% style="color:#037691" %)**AT Command:**
876
877 (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
878
879
880 **Example:**
881
882 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
883
884 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
885
886 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
887
888
889
890 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
891
892
893 Set DI1 or DI3(for LT-33222-L) trigger.
894
895 * (% style="color:#037691" %)**AT Command:**
896
897 (% style="color:blue" %)**AT+TRIG1=a,b**
898
899 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
900
901 (% style="color:red" %)**b :** (%%)delay timing.
902
903
904 **Example:**
905
906 AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
907
908
909 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
910
911 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
912
913
914
915 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
916
917
918 Set DI2 trigger.
919
920 * (% style="color:#037691" %)**AT Command:**
921
922 (% style="color:blue" %)**AT+TRIG2=a,b**
923
924 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
925
926 (% style="color:red" %)**b :** (%%)delay timing.
927
928
929 **Example:**
930
931 AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
932
933
934 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
935
936 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
937
938
939
940 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
941
942
943 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
944
945 * (% style="color:#037691" %)**AT Command**
946
947 (% style="color:blue" %)**AT+ACLIM**
948
949
950 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
951
952 (% 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"]]
953
954
955
956 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
957
958
959 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
960
961 * (% style="color:#037691" %)**AT Command**
962
963 (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
964
965
966 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
967
968 (% 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"]]
969
970
971
972 ==== 3.4.2.11 Trigger – Set minimum interval ====
973
974
975 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
976
977 * (% style="color:#037691" %)**AT Command**
978
979 (% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
980
981
982 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
983
984 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
985
986 (((
987
988
989 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
990 )))
991
992
993
994 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
995
996
997 * (% style="color:#037691" %)**AT Command**
998
999 There is no AT Command to control Digital Output
1000
1001
1002 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1003 * (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1004
1005 (((
1006 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1007 )))
1008
1009 (((
1010 01: Low,  00: High ,  11: No action
1011 )))
1012
1013 [[image:image-20220524092754-5.png]]
1014
1015 (((
1016 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1017 )))
1018
1019 (((
1020 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1021 )))
1022
1023
1024
1025 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1026
1027
1028 * (% style="color:#037691" %)**AT Command**
1029
1030 There is no AT Command to control Digital Output
1031
1032
1033 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1034
1035 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1036
1037
1038 This is to control the digital output time of DO pin. Include four bytes:
1039
1040 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1041
1042 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1043
1044 01: DO pins will change back to original state after timeout.
1045
1046 00: DO pins will change to an inverter state after timeout 
1047
1048
1049 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1050
1051 [[image:image-20220524093238-6.png]]
1052
1053
1054 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1055
1056 [[image:image-20220524093328-7.png]]
1057
1058
1059 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1060
1061 [[image:image-20220524093351-8.png]]
1062
1063
1064 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
1065
1066 Latching time. Unit: ms
1067
1068 Note:
1069
1070 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1071
1072 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1073
1074
1075 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1076
1077
1078 **Example payload:**
1079
1080 **~1. A9 01 01 01 01 07 D0**
1081
1082 DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
1083
1084 **2. A9 01 00 01 11 07 D0**
1085
1086 DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
1087
1088 **3. A9 00 00 00 00 07 D0**
1089
1090 DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
1091
1092 **4. A9 00 11 01 00 07 D0**
1093
1094 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
1095
1096
1097
1098 ==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
1099
1100
1101 * (% style="color:#037691" %)**AT Command:**
1102
1103 There is no AT Command to control Relay Output
1104
1105
1106 * (% style="color:#037691" %)**Downlink Payload (prefix 0x03):**
1107
1108 (% style="color:blue" %)**0x03 aa bb     ** (%%)~/~/ Set RO1/RO2 output
1109
1110
1111 (((
1112 If payload = 0x030100, it means set RO1 to close and RO2 to open.
1113 )))
1114
1115 (((
1116 01: Close ,  00: Open , 11: No action
1117 )))
1118
1119 (((
1120 [[image:image-20220524093724-9.png]]
1121 )))
1122
1123 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1124
1125
1126
1127
1128 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1129
1130
1131 * (% style="color:#037691" %)**AT Command:**
1132
1133 There is no AT Command to control Relay Output
1134
1135
1136 * (% style="color:#037691" %)**Downlink Payload (prefix 0x05):**
1137
1138 (% style="color:blue" %)**0x05 aa bb cc dd     ** (%%)~/~/ Set RO1/RO2 relay with time control
1139
1140
1141 This is to control the relay output time of relay. Include four bytes:
1142
1143 (% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
1144
1145 (% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
1146
1147 01: Relays will change back to original state after timeout.
1148
1149 00: Relays will change to an inverter state after timeout
1150
1151
1152 (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1153
1154 [[image:image-20221008095908-1.png||height="364" width="564"]]
1155
1156
1157 (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1158
1159 Note:
1160
1161 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1162
1163 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1164
1165
1166 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1167
1168
1169 **Example payload:**
1170
1171 **~1. 05 01 11 07 D**
1172
1173 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1174
1175 **2. 05 01 10 07 D0**
1176
1177 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1178
1179 **3. 05 00 01 07 D0**
1180
1181 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1182
1183 **4. 05 00 00 07 D0**
1184
1185 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1186
1187
1188
1189 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1190
1191
1192 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1193
1194 * (% style="color:#037691" %)**AT Command:**
1195
1196 (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1197
1198
1199 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1200
1201 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1202
1203
1204
1205 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1206
1207
1208 * (% style="color:#037691" %)**AT Command:**
1209
1210 (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1211
1212 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1213
1214 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1215
1216
1217 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1218
1219 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1220
1221
1222
1223 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1224
1225
1226 Clear counting for counting mode
1227
1228 * (% style="color:#037691" %)**AT Command:**
1229
1230 (% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1231
1232
1233 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1234
1235 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1236
1237
1238
1239 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1240
1241
1242 * (% style="color:#037691" %)**AT Command:**
1243
1244 (% 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)
1245
1246
1247 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1248
1249 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1250
1251 (((
1252 range: aa bb cc:0 to 16777215,  (unit:second)
1253 )))
1254
1255
1256
1257 ==== 3.4.2.20 Reset save RO DO state ====
1258
1259
1260 * (% style="color:#037691" %)**AT Command:**
1261
1262 (% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1263
1264 (% 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.
1265
1266
1267 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1268
1269 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1270
1271
1272
1273 ==== 3.4.2.21 Encrypted payload ====
1274
1275
1276 * (% style="color:#037691" %)**AT Command:**
1277
1278 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1279
1280 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1281
1282
1283
1284 ==== 3.4.2.22 Get sensor value ====
1285
1286
1287 * (% style="color:#037691" %)**AT Command:**
1288
1289 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1290
1291 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1292
1293
1294
1295 ==== 3.4.2.23 Resets the downlink packet count ====
1296
1297
1298 * (% style="color:#037691" %)**AT Command:**
1299
1300 (% 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)
1301
1302 (% 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.
1303
1304
1305
1306
1307 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1308
1309
1310 * (% style="color:#037691" %)**AT Command:**
1311
1312 (% 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)
1313
1314 (% 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.
1315
1316
1317 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1318
1319 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1320
1321
1322
1323
1324 ==== 3.4.2.25 Copy downlink to uplink ====
1325
1326
1327 * (% style="color:#037691" %)**AT Command**(%%)**:**
1328
1329 (% style="color:blue" %)**AT+RPL=5**   (%%) ~/~/ After receiving the package from the server, it will immediately upload the content of the package to the server, the port number is 100.
1330
1331 Example：**aa xx xx xx xx**         ~/~/ aa indicates whether the configuration has changed, 00 is yes, 01 is no; xx xx xx xx are the bytes sent.
1332
1333
1334 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173747-6.png?width=1124&height=165&rev=1.1||alt="image-20220823173747-6.png"]]
1335
1336 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1337
1338
1339
1340 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]
1341
1342 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1343
1344
1345
1346 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1347
1348
1349 * (((
1350 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1351
1352 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1353
1354
1355 )))
1356
1357 **Example：**
1358
1359 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173929-8.png?width=1205&height=76&rev=1.1||alt="image-20220823173929-8.png"]]
1360
1361
1362 == 3.5 Integrate with Mydevice ==
1363
1364
1365 Mydevices provides a human friendly interface to show the sensor data, once we have data in TTN, we can use Mydevices to connect to TTN and see the data in Mydevices. Below are the steps:
1366
1367 (((
1368 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1369 )))
1370
1371 (((
1372 (% style="color:blue" %)**Step 2**(%%): To configure the Application to forward data to Mydevices you will need to add integration. To add the Mydevices integration, perform the following steps:
1373
1374
1375 )))
1376
1377 [[image:image-20220719105525-1.png||height="377" width="677"]]
1378
1379
1380
1381 [[image:image-20220719110247-2.png||height="388" width="683"]]
1382
1383
1384 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1385
1386 (% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1387
1388 Search under The things network
1389
1390 [[image:1653356838789-523.png||height="337" width="740"]]
1391
1392
1393
1394 After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1395
1396 [[image:image-20220524094909-1.png||height="335" width="729"]]
1397
1398
1399 [[image:image-20220524094909-2.png||height="337" width="729"]]
1400
1401
1402 [[image:image-20220524094909-3.png||height="338" width="727"]]
1403
1404
1405 [[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1406
1407
1408 [[image:image-20220524094909-5.png||height="341" width="734"]]
1409
1410
1411 == 3.6 Interface Detail ==
1412
1413 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1414
1415
1416 Support NPN Type sensor
1417
1418 [[image:1653356991268-289.png]]
1419
1420
1421 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1422
1423
1424 (((
1425 The DI port of LT-22222-L can support NPN or PNP output sensor.
1426 )))
1427
1428 (((
1429 (((
1430 Internal circuit as below, the NEC2501 is a photocoupler, the Active current (from NEC2501 pin 1 to pin 2 is 1ma and the max current is 50mA. When there is active current pass NEC2501 pin1 to pin2. The DI will be active high.
1431
1432
1433 )))
1434 )))
1435
1436 [[image:1653357170703-587.png]]
1437
1438 (((
1439 (((
1440 When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1441 )))
1442 )))
1443
1444 (((
1445
1446 )))
1447
1448 (((
1449 (% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1450 )))
1451
1452 (((
1453 This type of sensor will output a low signal GND when active.
1454 )))
1455
1456 * (((
1457 Connect sensor's output to DI1-
1458 )))
1459 * (((
1460 Connect sensor's VCC to DI1+.
1461 )))
1462
1463 (((
1464 So when sensor active, the current between NEC2501 pin1 and pin2 is：
1465 )))
1466
1467 (((
1468 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1469 )))
1470
1471 (((
1472 If** DI1+ **= **12v**, the [[image:1653968155772-850.png||height="23" width="19"]]= 12mA , So the LT-22222-L will be able to detect this active signal.
1473 )))
1474
1475 (((
1476
1477
1478
1479 )))
1480
1481 (((
1482 (% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1483 )))
1484
1485 (((
1486 This type of sensor will output a high signal (example 24v) when active.
1487 )))
1488
1489 * (((
1490 Connect sensor's output to DI1+
1491 )))
1492 * (((
1493 Connect sensor's GND DI1-.
1494 )))
1495
1496 (((
1497 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1498 )))
1499
1500 (((
1501 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1502 )))
1503
1504 (((
1505 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.
1506 )))
1507
1508 (((
1509
1510
1511
1512 )))
1513
1514 (((
1515 (% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1516 )))
1517
1518 (((
1519 Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1520 )))
1521
1522 * (((
1523 Connect sensor's output to DI1+ with a serial 50K resistor
1524 )))
1525 * (((
1526 Connect sensor's GND DI1-.
1527 )))
1528
1529 (((
1530 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1531 )))
1532
1533 (((
1534 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1535 )))
1536
1537 (((
1538 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.
1539 )))
1540
1541
1542 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1543
1544
1545 **NPN output**: GND or Float. Max voltage can apply to output pin is 36v.
1546
1547 Note: DO pins go to float when device is power off.
1548
1549 [[image:1653357531600-905.png]]
1550
1551
1552 === 3.6.4 Analog Input Interface ===
1553
1554
1555 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:
1556
1557
1558 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1559
1560 [[image:1653357592296-182.png]]
1561
1562 Example to connect a 4~~20mA sensor
1563
1564 We take the wind speed sensor as an example for reference only.
1565
1566
1567 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1568
1569 **Red:  12~~24v**
1570
1571 **Yellow:  4~~20mA**
1572
1573 **Black:  GND**
1574
1575
1576 **Connection diagram:**
1577
1578 [[image:1653357640609-758.png]]
1579
1580 [[image:1653357648330-671.png||height="155" width="733"]]
1581
1582
1583 === 3.6.5 Relay Output ===
1584
1585
1586 (((
1587 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:
1588
1589 **Note**: RO pins go to Open(NO) when device is power off.
1590 )))
1591
1592 [[image:image-20220524100215-9.png]]
1593
1594
1595 [[image:image-20220524100215-10.png||height="382" width="723"]]
1596
1597
1598 == 3.7 LEDs Indicators ==
1599
1600
1601 [[image:image-20220524100748-11.png]]
1602
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
1949 === 4.2.3 Change to Class A ===
1950
1951
1952 (((
1953 (% style="color:blue" %)**If sensor JOINED:**
1954
1955 (% style="background-color:#dcdcdc" %)**AT+CLASS=A
1956 ATZ**
1957 )))
1958
1959
1960 = 5. FAQ =
1961
1962 == 5.1 How to upgrade the image? ==
1963
1964
1965 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1966
1967 * Support new features
1968 * For bug fix
1969 * Change LoRaWAN bands.
1970
1971 Below shows the hardware connection for how to upload an image to the LT:
1972
1973 [[image:1653359603330-121.png]]
1974
1975
1976 (((
1977 (% 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]].
1978 (% 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]].
1979 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
1980
1981
1982 (((
1983 (% style="color:blue" %)**For LT-22222-L**(%%):
1984 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.
1985 )))
1986
1987
1988 )))
1989
1990 [[image:image-20220524103407-12.png]]
1991
1992 [[image:image-20220524103429-13.png]]
1993
1994 [[image:image-20220524104033-15.png]]
1995
1996
1997 (% 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:
1998
1999
2000 [[image:1653360054704-518.png||height="186" width="745"]]
2001
2002
2003 (((
2004 (((
2005 == 5.2 How to change the LoRa Frequency Bands/Region? ==
2006
2007
2008 )))
2009 )))
2010
2011 (((
2012 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2013 )))
2014
2015 (((
2016
2017
2018 == 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2019
2020
2021 )))
2022
2023 (((
2024 (((
2025 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2026 )))
2027 )))
2028
2029 (((
2030 (((
2031 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2032
2033
2034 )))
2035 )))
2036
2037 (((
2038 (% 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.
2039
2040
2041 )))
2042
2043 (((
2044 [[image:1653360231087-571.png||height="401" width="727"]]
2045
2046
2047 )))
2048
2049 (((
2050 (% 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.**
2051 )))
2052
2053
2054
2055 (((
2056 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2057
2058
2059 )))
2060
2061 (((
2062 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2063 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2064 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2065 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2066 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2067 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2068 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2069 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2070 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2071 )))
2072
2073
2074 (((
2075 As shown in below:
2076 )))
2077
2078 [[image:1653360498588-932.png||height="485" width="726"]]
2079
2080
2081 == 5.4 Can I see counting event in Serial? ==
2082
2083
2084 (((
2085 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.
2086
2087
2088 == 5.5 Can i use point to point communication for LT-22222-L? ==
2089
2090
2091 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]].
2092
2093
2094 )))
2095
2096 (((
2097 == 5.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2098
2099
2100 If the device is not shut down, but directly powered off.
2101
2102 It will default that this is a power-off state.
2103
2104 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2105
2106 After restart, the status before power failure will be read from flash.
2107
2108
2109 == 5.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2110
2111
2112 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2113
2114
2115 [[image:image-20221006170630-1.png||height="610" width="945"]]
2116
2117
2118 == 5.8 Can LT22222-L save RO state? ==
2119
2120
2121 Firmware version needs to be no less than 1.6.0.
2122
2123
2124 = 6. Trouble Shooting =
2125 )))
2126
2127 (((
2128 (((
2129 == 6.1 Downlink doesn't work, how to solve it? ==
2130
2131
2132 )))
2133 )))
2134
2135 (((
2136 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2137 )))
2138
2139 (((
2140
2141
2142 == 6.2 Have trouble to upload image. ==
2143
2144
2145 )))
2146
2147 (((
2148 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2149 )))
2150
2151 (((
2152
2153
2154 == 6.3 Why I can't join TTN in US915 /AU915 bands? ==
2155
2156
2157 )))
2158
2159 (((
2160 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2161 )))
2162
2163
2164 = 7. Order Info =
2165
2166
2167 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2168
2169 (% style="color:#4f81bd" %)**XXX:**
2170
2171 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2172 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2173 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2174 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2175 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2176 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2177 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2178 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2179 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2180
2181
2182 = 8. Packing Info =
2183
2184
2185 **Package Includes**:
2186
2187 * LT-22222-L I/O Controller x 1
2188 * Stick Antenna for LoRa RF part x 1
2189 * Bracket for controller x1
2190 * Program cable x 1
2191
2192 **Dimension and weight**:
2193
2194 * Device Size: 13.5 x 7 x 3 cm
2195 * Device Weight: 105g
2196 * Package Size / pcs : 14.5 x 8 x 5 cm
2197 * Weight / pcs : 170g
2198
2199
2200 = 9. Support =
2201
2202
2203 * (((
2204 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.
2205 )))
2206 * (((
2207 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]]
2208
2209
2210
2211 )))
2212
2213 = 10. Reference​​​​​ =
2214
2215
2216 * 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]]
2217 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2218 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]