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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
191 == 1.4  Applications ==
192
193
194 * Smart Buildings & Home Automation
195 * Logistics and Supply Chain Management
196 * Smart Metering
197 * Smart Agriculture
198 * Smart Cities
199 * Smart Factory
200
201
202
203 == 1.5 Hardware Variants ==
204
205
206 (% border="1" style="background-color:#f7faff; width:500px" %)
207 |(% style="width:103px" %)**Model**|(% style="width:131px" %)**Photo**|(% style="width:334px" %)**Description**
208 |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)[[image:1653296302983-697.png]]|(% style="width:334px" %)(((
209 * 2 x Digital Input (Bi-direction)
210 * 2 x Digital Output
211 * 2 x Relay Output (5A@250VAC / 30VDC)
212 * 2 x 0~~20mA Analog Input (res:0.01mA)
213 * 2 x 0~~30V Analog Input (res:0.01v)
214 * 1 x Counting Port
215 )))
216
217
218
219 = 2. Power ON Device =
220
221
222 (((
223 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.
224 )))
225
226 (((
227 PWR will on when device is properly powered.
228
229
230 )))
231
232 [[image:1653297104069-180.png]]
233
234
235 = 3. Operation Mode =
236
237 == 3.1 How it works? ==
238
239
240 (((
241 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. 
242 )))
243
244 (((
245 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.
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
315 === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
316
317
318 (((
319 The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
320 )))
321
322 [[image:image-20220523174024-3.png]]
323
324 (((
325
326
327 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
328 )))
329
330 [[image:image-20220523174254-4.png]]
331
332 * RO is for relay. ROx=1 : close,ROx=0 always open.
333 * DI is for digital input. DIx=1: high or float, DIx=0: low.
334 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
335
336 (% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
337
338 For example if payload is: [[image:image-20220523175847-2.png]]
339
340
341 **The value for the interface is:  **
342
343 AVI1 channel voltage is 0x04AB/1000=1195(DEC)/1000=1.195V
344
345 AVI2 channel voltage is 0x04AC/1000=1.196V
346
347 ACI1 channel current is 0x1310/1000=4.880mA
348
349 ACI2 channel current is 0x1300/1000=4.864mA
350
351 The last byte 0xAA= 10101010(B) means
352
353 * [1] RO1 relay channel is close and the RO1 LED is ON.
354 * [0] RO2 relay channel is open and RO2 LED is OFF;
355
356 **LT22222-L:**
357
358 * [1] DI2 channel is high input and DI2 LED is ON;
359 * [0] DI1 channel is low input;
360
361 * [0] DO3 channel output state
362 ** DO3 is float in case no load between DO3 and V+.;
363 ** DO3 is high in case there is load between DO3 and V+.
364 ** DO3 LED is off in both case
365 * [1] DO2 channel output is low and DO2 LED is ON.
366 * [0] DO1 channel output state
367 ** DO1 is float in case no load between DO1 and V+.;
368 ** DO1 is high in case there is load between DO1 and V+.
369 ** DO1 LED is off in both case
370
371
372
373 === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
374
375
376 (((
377 **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
378 )))
379
380 (((
381 Total : 11 bytes payload
382 )))
383
384 [[image:image-20220523180452-3.png]]
385
386
387 (((
388 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
389 )))
390
391 [[image:image-20220523180506-4.png]]
392
393 * RO is for relay. ROx=1 : close,ROx=0 always open.
394 * FIRST: Indicate this is the first packet after join network.
395 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
396
397 (((
398 (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
399 )))
400
401 (((
402
403
404 **To use counting mode, please run:**
405 )))
406
407 (% class="box infomessage" %)
408 (((
409 (((
410 (((
411 **AT+MOD=2**
412 )))
413
414 (((
415 **ATZ**
416 )))
417 )))
418 )))
419
420 (((
421
422
423 (% style="color:#4f81bd" %)**AT Commands for counting:**
424
425
426 )))
427
428 (((
429 **For LT22222-L:**
430
431
432 (% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
433
434 (% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
435
436 (% style="color:blue" %)**AT+TRIG2=0,100**(%%)**  (set DI2 port to trigger on low level, valid signal is 100ms) **
437
438 (% style="color:blue" %)**AT+TRIG2=1,100**(%%)**  (set DI2 port to trigger on high level, valid signal is 100ms ) **
439
440 (% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set COUNT1 value to 60)**
441
442 (% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set COUNT2 value to 60)**
443 )))
444
445
446 === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
447
448
449 **LT22222-L**: This mode the DI1 is used as a counting pin.
450
451 [[image:image-20220523181246-5.png]]
452
453 (((
454
455
456 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
457 )))
458
459 [[image:image-20220523181301-6.png]]
460
461 * RO is for relay. ROx=1 : close,ROx=0 always open.
462 * FIRST: Indicate this is the first packet after join network.
463 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
464
465 (((
466 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
467 )))
468
469
470 (((
471 **To use counting mode, please run:**
472 )))
473
474 (% class="box infomessage" %)
475 (((
476 (((
477 (((
478 **AT+MOD=3**
479 )))
480
481 (((
482 **ATZ**
483 )))
484 )))
485 )))
486
487 (((
488 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
489 )))
490
491
492 === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
493
494
495 (((
496 **LT22222-L**: This mode the DI1 is used as a counting pin.
497 )))
498
499 (((
500 The AVI1 is also used for counting. AVI1 is used to monitor the voltage. It will check the voltage **every 60s**, if voltage is higher or lower than VOLMAX mV, the AVI1 Counting increase 1, so AVI1 counting can be used to measure a machine working hour.
501 )))
502
503 [[image:image-20220523181903-8.png]]
504
505
506 (((
507 (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
508 )))
509
510 [[image:image-20220523181727-7.png]]
511
512 * RO is for relay. ROx=1 : close,ROx=0 always open.
513 * FIRST: Indicate this is the first packet after join network.
514 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
515
516 (((
517 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
518 )))
519
520 (((
521
522
523 **To use this mode, please run:**
524 )))
525
526 (% class="box infomessage" %)
527 (((
528 (((
529 (((
530 **AT+MOD=4**
531 )))
532
533 (((
534 **ATZ**
535 )))
536 )))
537 )))
538
539
540 (((
541 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
542 )))
543
544 (((
545
546
547 **Plus below command for AVI1 Counting:**
548
549
550 (% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
551
552 (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
553
554 (% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**  (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
555
556 (% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**  (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
557 )))
558
559
560 === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
561
562
563 **LT22222-L**: This mode the DI1 is used as a counting pin.
564
565 [[image:image-20220523182334-9.png]]
566
567 (((
568
569
570 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
571 )))
572
573 * RO is for relay. ROx=1 : close,ROx=0 always open.
574 * FIRST: Indicate this is the first packet after join network.
575 * (((
576 DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
577 )))
578
579 (((
580 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
581 )))
582
583 (((
584
585
586 **To use this mode, please run:**
587 )))
588
589 (% class="box infomessage" %)
590 (((
591 (((
592 (((
593 **AT+MOD=5**
594 )))
595
596 (((
597 **ATZ**
598 )))
599 )))
600 )))
601
602 (((
603 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
604 )))
605
606
607 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
608
609
610 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
611
612 For example, if user has configured below commands:
613
614 * **AT+MOD=1 ** **~-~->**  The normal working mode
615 * **AT+ADDMOD6=1**   **~-~->**  Enable trigger
616
617 LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
618
619 1. Periodically uplink (Base on TDC time). Payload is same as the normal MOD (MOD 1 for above command). This uplink uses LoRaWAN (% style="color:#4f81bd" %)**unconfirmed**(%%) data type
620 1. Trigger uplink when meet the trigger condition. LT will sent two packets in this case, the first uplink use payload specify in this mod (mod=6), the second packets use the normal mod payload(MOD=1 for above settings). Both Uplinks use LoRaWAN (% style="color:#4f81bd" %)**CONFIRMED data type.**
621
622 (% style="color:#037691" %)**AT Command to set Trigger Condition**:
623
624
625 (% style="color:#4f81bd" %)**Trigger base on voltage**:
626
627 Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
628
629
630 **Example:**
631
632 AT+AVLIM=3000,6000,0,2000   (If AVI1 voltage lower than 3v or higher than 6v. or AV2 voltage is higher than 2v, LT will trigger Uplink)
633
634 AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
635
636
637
638 (% style="color:#4f81bd" %)**Trigger base on current**:
639
640 Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
641
642
643 **Example:**
644
645 AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
646
647
648
649 (% style="color:#4f81bd" %)**Trigger base on DI status**:
650
651 DI status trigger Flag.
652
653 Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
654
655
656 **Example:**
657
658 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
659
660
661
662 (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
663
664 Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
665
666 Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
667
668 AA: Code for this downlink Command:
669
670 xx: 0: Limit for AV1 and AV2;  1: limit for AC1 and AC2 ; 2 DI1, DI2 trigger enable/disable
671
672 yy1 yy1: AC1 or AV1 low limit or DI1/DI2 trigger status.
673
674 yy2 yy2: AC1 or AV1 high limit.
675
676 yy3 yy3: AC2 or AV2 low limit.
677
678 Yy4 yy4: AC2 or AV2 high limit.
679
680
681 **Example1**: AA 00 13 88 00 00 00 00 00 00
682
683 Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
684
685
686 **Example2**: AA 02 01 00
687
688 Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
689
690
691
692 (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
693
694 MOD6 Payload : total 11 bytes payload
695
696 [[image:image-20220524085923-1.png]]
697
698
699 (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
700
701 [[image:image-20220524090106-2.png]]
702
703 * Each bits shows if the corresponding trigger has been configured.
704
705 **Example:**
706
707 10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
708
709
710
711 (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
712
713 [[image:image-20220524090249-3.png]]
714
715 * Each bits shows which status has been trigger on this uplink.
716
717 **Example:**
718
719 10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
720
721
722
723 (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
724
725 [[image:image-20220524090456-4.png]]
726
727 * Each bits shows which status has been trigger on this uplink.
728
729 **Example:**
730
731 00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
732
733 00000101: Means both DI1 and DI2 trigger are enabled.
734
735
736
737 (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
738
739 Downlink command to poll MOD6 status:
740
741 **AB 06**
742
743 When device got this command, it will send the MOD6 payload.
744
745
746 === 3.3.7 Payload Decoder ===
747
748 (((
749
750
751 **Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
752 )))
753
754
755 == 3.4 ​Configure LT via AT or Downlink ==
756
757
758 (((
759 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
760 )))
761
762 (((
763 (((
764 There are two kinds of Commands:
765 )))
766 )))
767
768 * (% 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]]
769
770 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
771
772
773
774 === 3.4.1 Common Commands ===
775
776
777 (((
778 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]]
779 )))
780
781
782 === 3.4.2 Sensor related commands ===
783
784 ==== 3.4.2.1 Set Transmit Interval ====
785
786
787 Set device uplink interval.
788
789 * (% style="color:#037691" %)**AT Command:**
790
791 (% style="color:blue" %)**AT+TDC=N **
792
793
794 **Example: **AT+TDC=30000. Means set interval to 30 seconds
795
796
797 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
798
799 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
800
801
802
803 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
804
805
806 Set work mode.
807
808 * (% style="color:#037691" %)**AT Command:**
809
810 (% style="color:blue" %)**AT+MOD=N  **
811
812
813 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
814
815
816 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
817
818 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
819
820
821
822 ==== 3.4.2.3 Poll an uplink ====
823
824
825 * (% style="color:#037691" %)**AT Command:**
826
827 There is no AT Command to poll uplink
828
829
830 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
831
832 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
833
834
835 **Example**: 0x08FF, ask device to send an Uplink
836
837
838
839 ==== 3.4.2.4 Enable Trigger Mode ====
840
841
842 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
843
844 * (% style="color:#037691" %)**AT Command:**
845
846 (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
847
848 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
849
850 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
851
852
853 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
854
855 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
856
857
858
859
860 ==== 3.4.2.5 Poll trigger settings ====
861
862
863 Poll trigger settings,
864
865 * (% style="color:#037691" %)**AT Command:**
866
867 There is no AT Command for this feature.
868
869
870 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
871
872 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
873
874
875
876 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
877
878
879 Enable Disable DI1/DI2/DI2 as trigger,
880
881 * (% style="color:#037691" %)**AT Command:**
882
883 (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
884
885
886 **Example:**
887
888 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
889
890 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
891
892 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
893
894
895
896 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
897
898
899 Set DI1 or DI3(for LT-33222-L) trigger.
900
901 * (% style="color:#037691" %)**AT Command:**
902
903 (% style="color:blue" %)**AT+TRIG1=a,b**
904
905 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
906
907 (% style="color:red" %)**b :** (%%)delay timing.
908
909
910 **Example:**
911
912 AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
913
914
915 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
916
917 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
918
919
920
921 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
922
923
924 Set DI2 trigger.
925
926 * (% style="color:#037691" %)**AT Command:**
927
928 (% style="color:blue" %)**AT+TRIG2=a,b**
929
930 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
931
932 (% style="color:red" %)**b :** (%%)delay timing.
933
934
935 **Example:**
936
937 AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
938
939
940 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
941
942 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG1=aa,0x(bb cc)
943
944
945
946 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
947
948
949 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
950
951 * (% style="color:#037691" %)**AT Command**
952
953 (% style="color:blue" %)**AT+ACLIM**
954
955
956 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
957
958 (% style="color:blue" %)**0x AA 01 aa bb cc dd ee ff gg hh        ** (%%) ~/~/ same as AT+ACLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
959
960
961
962 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
963
964
965 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
966
967 * (% style="color:#037691" %)**AT Command**
968
969 (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
970
971
972 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
973
974 (% style="color:blue" %)**0x AA 00 aa bb cc dd ee ff gg hh    ** (%%) ~/~/ same as AT+AVLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
975
976
977
978 ==== 3.4.2.11 Trigger – Set minimum interval ====
979
980
981 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
982
983 * (% style="color:#037691" %)**AT Command**
984
985 (% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
986
987
988 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
989
990 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
991
992 (((
993
994
995 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
996 )))
997
998
999
1000 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1001
1002
1003 * (% style="color:#037691" %)**AT Command**
1004
1005 There is no AT Command to control Digital Output
1006
1007
1008 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1009 * (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1010
1011 (((
1012 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1013 )))
1014
1015 (((
1016 01: Low,  00: High ,  11: No action
1017 )))
1018
1019 [[image:image-20220524092754-5.png]]
1020
1021 (((
1022 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1023 )))
1024
1025 (((
1026 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1027 )))
1028
1029
1030
1031 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1032
1033
1034 * (% style="color:#037691" %)**AT Command**
1035
1036 There is no AT Command to control Digital Output
1037
1038
1039 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1040
1041 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1042
1043
1044 This is to control the digital output time of DO pin. Include four bytes:
1045
1046 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1047
1048 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1049
1050 01: DO pins will change back to original state after timeout.
1051
1052 00: DO pins will change to an inverter state after timeout 
1053
1054
1055 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1056
1057 [[image:image-20220524093238-6.png]]
1058
1059
1060 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1061
1062 [[image:image-20220524093328-7.png]]
1063
1064
1065 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1066
1067 [[image:image-20220524093351-8.png]]
1068
1069
1070 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
1071
1072 Latching time. Unit: ms
1073
1074 Note:
1075
1076 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1077
1078 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1079
1080
1081 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1082
1083
1084 **Example payload:**
1085
1086 **~1. A9 01 01 01 01 07 D0**
1087
1088 DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
1089
1090 **2. A9 01 00 01 11 07 D0**
1091
1092 DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
1093
1094 **3. A9 00 00 00 00 07 D0**
1095
1096 DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
1097
1098 **4. A9 00 11 01 00 07 D0**
1099
1100 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
1101
1102
1103
1104 ==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
1105
1106
1107 * (% style="color:#037691" %)**AT Command:**
1108
1109 There is no AT Command to control Relay Output
1110
1111
1112 * (% style="color:#037691" %)**Downlink Payload (prefix 0x03):**
1113
1114 (% style="color:blue" %)**0x03 aa bb     ** (%%)~/~/ Set RO1/RO2 output
1115
1116
1117 (((
1118 If payload = 0x030100, it means set RO1 to close and RO2 to open.
1119 )))
1120
1121 (((
1122 01: Close ,  00: Open , 11: No action
1123 )))
1124
1125 (((
1126 [[image:image-20220524093724-9.png]]
1127 )))
1128
1129 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1130
1131
1132
1133
1134 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1135
1136
1137 * (% style="color:#037691" %)**AT Command:**
1138
1139 There is no AT Command to control Relay Output
1140
1141
1142 * (% style="color:#037691" %)**Downlink Payload (prefix 0x05):**
1143
1144 (% style="color:blue" %)**0x05 aa bb cc dd     ** (%%)~/~/ Set RO1/RO2 relay with time control
1145
1146
1147 This is to control the relay output time of relay. Include four bytes:
1148
1149 (% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
1150
1151 (% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
1152
1153 01: Relays will change back to original state after timeout.
1154
1155 00: Relays will change to an inverter state after timeout
1156
1157
1158 (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1159
1160 [[image:image-20221008095908-1.png||height="364" width="564"]]
1161
1162
1163 (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1164
1165 Note:
1166
1167 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1168
1169 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1170
1171
1172 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1173
1174
1175 **Example payload:**
1176
1177 **~1. 05 01 11 07 D**
1178
1179 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1180
1181 **2. 05 01 10 07 D0**
1182
1183 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1184
1185 **3. 05 00 01 07 D0**
1186
1187 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1188
1189 **4. 05 00 00 07 D0**
1190
1191 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1192
1193
1194
1195 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1196
1197
1198 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1199
1200 * (% style="color:#037691" %)**AT Command:**
1201
1202 (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1203
1204
1205 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1206
1207 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1208
1209
1210
1211 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1212
1213
1214 * (% style="color:#037691" %)**AT Command:**
1215
1216 (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1217
1218 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1219
1220 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1221
1222
1223 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1224
1225 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1226
1227
1228
1229 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1230
1231
1232 Clear counting for counting mode
1233
1234 * (% style="color:#037691" %)**AT Command:**
1235
1236 (% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1237
1238
1239 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1240
1241 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1242
1243
1244
1245 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1246
1247
1248 * (% style="color:#037691" %)**AT Command:**
1249
1250 (% 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)
1251
1252
1253 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1254
1255 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1256
1257 (((
1258 range: aa bb cc:0 to 16777215,  (unit:second)
1259 )))
1260
1261
1262
1263 ==== 3.4.2.20 Reset save RO DO state ====
1264
1265
1266 * (% style="color:#037691" %)**AT Command:**
1267
1268 (% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1269
1270 (% 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.
1271
1272
1273 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1274
1275 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1276
1277
1278
1279 ==== 3.4.2.21 Encrypted payload ====
1280
1281
1282 * (% style="color:#037691" %)**AT Command:**
1283
1284 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1285
1286 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1287
1288
1289
1290 ==== 3.4.2.22 Get sensor value ====
1291
1292
1293 * (% style="color:#037691" %)**AT Command:**
1294
1295 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1296
1297 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1298
1299
1300
1301 ==== 3.4.2.23 Resets the downlink packet count ====
1302
1303
1304 * (% style="color:#037691" %)**AT Command:**
1305
1306 (% 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)
1307
1308 (% 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.
1309
1310
1311
1312
1313 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1314
1315
1316 * (% style="color:#037691" %)**AT Command:**
1317
1318 (% style="color:blue" %)**AT+DISMACANS=0**   (%%) ~/~/ When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of 11 bytes (DR0 of US915, DR2 of AS923, DR2 of AU195), the node will send a packet with a payload of 00 and a port of 4. (default)
1319
1320 (% style="color:blue" %)**AT+DISMACANS=1**  (%%) ~/~/ When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of the DR, the node will ignore the MACANS and not reply, and only upload the payload part.
1321
1322
1323 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1324
1325 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1326
1327
1328
1329
1330 ==== 3.4.2.25 Copy downlink to uplink ====
1331
1332
1333 * (% style="color:#037691" %)**AT Command**(%%)**:**
1334
1335 (% 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.
1336
1337 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.
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-20220823173747-6.png?width=1124&height=165&rev=1.1||alt="image-20220823173747-6.png"]]
1341
1342 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1343
1344
1345
1346 [[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"]]
1347
1348 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1349
1350
1351
1352 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1353
1354
1355 * (((
1356 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1357
1358 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1359
1360
1361 )))
1362
1363 **Example:**
1364
1365 [[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"]]
1366
1367
1368 == 3.5 Integrate with Mydevice ==
1369
1370
1371 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:
1372
1373 (((
1374 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1375 )))
1376
1377 (((
1378 (% 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:
1379
1380
1381 )))
1382
1383 [[image:image-20220719105525-1.png||height="377" width="677"]]
1384
1385
1386
1387 [[image:image-20220719110247-2.png||height="388" width="683"]]
1388
1389
1390 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1391
1392 (% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1393
1394 Search under The things network
1395
1396 [[image:1653356838789-523.png||height="337" width="740"]]
1397
1398
1399
1400 After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1401
1402 [[image:image-20220524094909-1.png||height="335" width="729"]]
1403
1404
1405 [[image:image-20220524094909-2.png||height="337" width="729"]]
1406
1407
1408 [[image:image-20220524094909-3.png||height="338" width="727"]]
1409
1410
1411 [[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1412
1413
1414 [[image:image-20220524094909-5.png||height="341" width="734"]]
1415
1416
1417 == 3.6 Interface Detail ==
1418
1419 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1420
1421
1422 Support NPN Type sensor
1423
1424 [[image:1653356991268-289.png]]
1425
1426
1427 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1428
1429
1430 (((
1431 The DI port of LT-22222-L can support NPN or PNP output sensor.
1432 )))
1433
1434 (((
1435 (((
1436 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.
1437
1438
1439 )))
1440 )))
1441
1442 [[image:1653357170703-587.png]]
1443
1444 (((
1445 (((
1446 When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1447 )))
1448 )))
1449
1450 (((
1451
1452 )))
1453
1454 (((
1455 (% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1456 )))
1457
1458 (((
1459 This type of sensor will output a low signal GND when active.
1460 )))
1461
1462 * (((
1463 Connect sensor's output to DI1-
1464 )))
1465 * (((
1466 Connect sensor's VCC to DI1+.
1467 )))
1468
1469 (((
1470 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1471 )))
1472
1473 (((
1474 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1475 )))
1476
1477 (((
1478 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.
1479 )))
1480
1481 (((
1482
1483
1484
1485 )))
1486
1487 (((
1488 (% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1489 )))
1490
1491 (((
1492 This type of sensor will output a high signal (example 24v) when active.
1493 )))
1494
1495 * (((
1496 Connect sensor's output to DI1+
1497 )))
1498 * (((
1499 Connect sensor's GND DI1-.
1500 )))
1501
1502 (((
1503 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1504 )))
1505
1506 (((
1507 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1508 )))
1509
1510 (((
1511 If **DI1+ = 24v**, the[[image:1653968155772-850.png||height="23" width="19"]] 24mA , So the LT-22222-L will be able to detect this high active signal.
1512 )))
1513
1514 (((
1515
1516
1517
1518 )))
1519
1520 (((
1521 (% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1522 )))
1523
1524 (((
1525 Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1526 )))
1527
1528 * (((
1529 Connect sensor's output to DI1+ with a serial 50K resistor
1530 )))
1531 * (((
1532 Connect sensor's GND DI1-.
1533 )))
1534
1535 (((
1536 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1537 )))
1538
1539 (((
1540 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1541 )))
1542
1543 (((
1544 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.
1545 )))
1546
1547
1548 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1549
1550
1551 **NPN output**: GND or Float. Max voltage can apply to output pin is 36v.
1552
1553 Note: DO pins go to float when device is power off.
1554
1555 [[image:1653357531600-905.png]]
1556
1557
1558 === 3.6.4 Analog Input Interface ===
1559
1560
1561 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:
1562
1563
1564 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1565
1566 [[image:1653357592296-182.png]]
1567
1568 Example to connect a 4~~20mA sensor
1569
1570 We take the wind speed sensor as an example for reference only.
1571
1572
1573 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1574
1575 **Red:  12~~24v**
1576
1577 **Yellow:  4~~20mA**
1578
1579 **Black:  GND**
1580
1581
1582 **Connection diagram:**
1583
1584 [[image:1653357640609-758.png]]
1585
1586 [[image:1653357648330-671.png||height="155" width="733"]]
1587
1588
1589 === 3.6.5 Relay Output ===
1590
1591
1592 (((
1593 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:
1594
1595 **Note**: RO pins go to Open(NO) when device is power off.
1596 )))
1597
1598 [[image:image-20220524100215-9.png]]
1599
1600
1601 [[image:image-20220524100215-10.png||height="382" width="723"]]
1602
1603
1604 == 3.7 LEDs Indicators ==
1605
1606
1607 [[image:image-20220524100748-11.png]]
1608
1609
1610
1611 = 4. Use AT Command =
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 == 4.2 Common AT Command Sequence ==
1824
1825 === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1826
1827 (((
1828
1829
1830 (((
1831 (% style="color:blue" %)**If device has not joined network yet:**
1832 )))
1833 )))
1834
1835 (((
1836 (% style="background-color:#dcdcdc" %)**123456**
1837 )))
1838
1839 (((
1840 (% style="background-color:#dcdcdc" %)**AT+FDR**
1841 )))
1842
1843 (((
1844 (% style="background-color:#dcdcdc" %)**123456**
1845 )))
1846
1847 (((
1848 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1849 )))
1850
1851 (((
1852 (% style="background-color:#dcdcdc" %)**ATZ**
1853 )))
1854
1855
1856 (((
1857 (% style="color:blue" %)**If device already joined network:**
1858 )))
1859
1860 (((
1861 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1862 )))
1863
1864 (((
1865 (% style="background-color:#dcdcdc" %)**ATZ**
1866 )))
1867
1868
1869 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1870
1871 (((
1872
1873
1874 (((
1875 (% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1876 )))
1877 )))
1878
1879 (((
1880 (% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
1881 )))
1882
1883 (((
1884 (% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1885 )))
1886
1887 (((
1888 (% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
1889 )))
1890
1891 (((
1892 (% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
1893 )))
1894
1895 (((
1896 (% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
1897 )))
1898
1899 (((
1900 (% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
1901 )))
1902
1903 (((
1904 (% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
1905 )))
1906
1907 (((
1908 (% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
1909 )))
1910
1911 (((
1912 (% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
1913 )))
1914
1915 (((
1916 (% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
1917 )))
1918
1919 (((
1920 (% 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.
1921 )))
1922
1923 (((
1924 (% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
1925
1926
1927 )))
1928
1929 (((
1930 (% style="color:red" %)**Note:**
1931 )))
1932
1933 (((
1934 **~1. Make sure the device is set to ABP mode in the IoT Server.**
1935
1936 **2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
1937
1938 **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?
1939 dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1940
1941 **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**
1942
1943
1944 )))
1945
1946 (((
1947 [[image:1653359097980-169.png||height="188" width="729"]]
1948 )))
1949
1950 (((
1951
1952 )))
1953
1954
1955 === 4.2.3 Change to Class A ===
1956
1957
1958 (((
1959 (% style="color:blue" %)**If sensor JOINED:**
1960
1961 (% style="background-color:#dcdcdc" %)**AT+CLASS=A
1962 ATZ**
1963 )))
1964
1965
1966 = 5. FAQ =
1967
1968 == 5.1 How to upgrade the image? ==
1969
1970
1971 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1972
1973 * Support new features
1974 * For bug fix
1975 * Change LoRaWAN bands.
1976
1977 Below shows the hardware connection for how to upload an image to the LT:
1978
1979 [[image:1653359603330-121.png]]
1980
1981
1982 (((
1983 (% 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]].
1984 (% 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]].
1985 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
1986
1987
1988 (((
1989 (% style="color:blue" %)**For LT-22222-L**(%%):
1990 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.
1991 )))
1992
1993
1994 )))
1995
1996 [[image:image-20220524103407-12.png]]
1997
1998 [[image:image-20220524103429-13.png]]
1999
2000 [[image:image-20220524104033-15.png]]
2001
2002
2003 (% 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:
2004
2005
2006 [[image:1653360054704-518.png||height="186" width="745"]]
2007
2008
2009 (((
2010 (((
2011 == 5.2 How to change the LoRa Frequency Bands/Region? ==
2012
2013
2014 )))
2015 )))
2016
2017 (((
2018 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2019 )))
2020
2021 (((
2022
2023
2024 == 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2025
2026
2027 )))
2028
2029 (((
2030 (((
2031 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2032 )))
2033 )))
2034
2035 (((
2036 (((
2037 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2038
2039
2040 )))
2041 )))
2042
2043 (((
2044 (% 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.
2045
2046
2047 )))
2048
2049 (((
2050 [[image:1653360231087-571.png||height="401" width="727"]]
2051
2052
2053 )))
2054
2055 (((
2056 (% 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.**
2057 )))
2058
2059
2060
2061 (((
2062 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2063
2064
2065 )))
2066
2067 (((
2068 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2069 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2070 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2071 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2072 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2073 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2074 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2075 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2076 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2077 )))
2078
2079
2080 (((
2081 As shown in below:
2082 )))
2083
2084 [[image:1653360498588-932.png||height="485" width="726"]]
2085
2086
2087 == 5.4 Can I see counting event in Serial? ==
2088
2089
2090 (((
2091 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.
2092
2093
2094 == 5.5 Can i use point to point communication for LT-22222-L? ==
2095
2096
2097 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]].
2098
2099
2100 )))
2101
2102 (((
2103 == 5.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2104
2105
2106 If the device is not shut down, but directly powered off.
2107
2108 It will default that this is a power-off state.
2109
2110 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2111
2112 After restart, the status before power failure will be read from flash.
2113
2114
2115 == 5.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2116
2117
2118 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2119
2120
2121 [[image:image-20221006170630-1.png||height="610" width="945"]]
2122
2123
2124 == 5.8 Can LT22222-L save RO state? ==
2125
2126
2127 Firmware version needs to be no less than 1.6.0.
2128
2129
2130 = 6. Trouble Shooting =
2131 )))
2132
2133 (((
2134 (((
2135 == 6.1 Downlink doesn't work, how to solve it? ==
2136
2137
2138 )))
2139 )))
2140
2141 (((
2142 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2143 )))
2144
2145 (((
2146
2147
2148 == 6.2 Have trouble to upload image. ==
2149
2150
2151 )))
2152
2153 (((
2154 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2155 )))
2156
2157 (((
2158
2159
2160 == 6.3 Why I can't join TTN in US915 /AU915 bands? ==
2161
2162
2163 )))
2164
2165 (((
2166 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2167 )))
2168
2169
2170 = 7. Order Info =
2171
2172
2173 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2174
2175 (% style="color:#4f81bd" %)**XXX:**
2176
2177 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2178 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2179 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2180 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2181 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2182 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2183 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2184 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2185 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2186
2187
2188
2189 = 8. Packing Info =
2190
2191
2192 **Package Includes**:
2193
2194 * LT-22222-L I/O Controller x 1
2195 * Stick Antenna for LoRa RF part x 1
2196 * Bracket for controller x1
2197 * Program cable x 1
2198
2199 **Dimension and weight**:
2200
2201 * Device Size: 13.5 x 7 x 3 cm
2202 * Device Weight: 105g
2203 * Package Size / pcs : 14.5 x 8 x 5 cm
2204 * Weight / pcs : 170g
2205
2206
2207
2208 = 9. Support =
2209
2210
2211 * (((
2212 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.
2213 )))
2214 * (((
2215 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]]
2216
2217
2218
2219 )))
2220
2221 = 10. Reference​​​​​ =
2222
2223
2224 * 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]]
2225 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2226 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
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