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Version 103.1 by Bei Jinggeng on 2022/11/10 10:26
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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 STM32L072CZT6 MCU
68 )))
69 * (((
70 SX1276/78 Wireless Chip 
71 )))
72 * (((
73 (((
74 Power Consumption:
75 )))
76
77 * (((
78 Idle: 4mA@12v
79 )))
80 * (((
81 20dB Transmit: 34mA@12v
82 )))
83 )))
84
85 (((
86
87
88 (% style="color:#037691" %)**Interface for Model: LT22222-L:**
89 )))
90
91 * (((
92 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
93 )))
94 * (((
95 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
96 )))
97 * (((
98 2 x Relay Output (5A@250VAC / 30VDC)
99 )))
100 * (((
101 2 x 0~~20mA Analog Input (res:0.01mA)
102 )))
103 * (((
104 2 x 0~~30V Analog Input (res:0.01v)
105 )))
106 * (((
107 Power Input 7~~ 24V DC. 
108 )))
109
110 (((
111
112
113 (% style="color:#037691" %)**LoRa Spec:**
114 )))
115
116 * (((
117 (((
118 Frequency Range:
119 )))
120
121 * (((
122 Band 1 (HF): 862 ~~ 1020 Mhz
123 )))
124 * (((
125 Band 2 (LF): 410 ~~ 528 Mhz
126 )))
127 )))
128 * (((
129 168 dB maximum link budget.
130 )))
131 * (((
132 +20 dBm - 100 mW constant RF output vs.
133 )))
134 * (((
135 +14 dBm high efficiency PA.
136 )))
137 * (((
138 Programmable bit rate up to 300 kbps.
139 )))
140 * (((
141 High sensitivity: down to -148 dBm.
142 )))
143 * (((
144 Bullet-proof front end: IIP3 = -12.5 dBm.
145 )))
146 * (((
147 Excellent blocking immunity.
148 )))
149 * (((
150 Low RX current of 10.3 mA, 200 nA register retention.
151 )))
152 * (((
153 Fully integrated synthesizer with a resolution of 61 Hz.
154 )))
155 * (((
156 FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
157 )))
158 * (((
159 Built-in bit synchronizer for clock recovery.
160 )))
161 * (((
162 Preamble detection.
163 )))
164 * (((
165 127 dB Dynamic Range RSSI.
166 )))
167 * (((
168 Automatic RF Sense and CAD with ultra-fast AFC.
169 )))
170 * (((
171 Packet engine up to 256 bytes with CRC.
172
173
174
175
176 )))
177
178 == 1.3 Features ==
179
180
181 * LoRaWAN Class A & Class C protocol
182 * Optional Customized LoRa Protocol
183 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
184 * AT Commands to change parameters
185 * Remote configure parameters via LoRa Downlink
186 * Firmware upgradable via program port
187 * Counting
188
189
190 == 1.4  Applications ==
191
192
193 * Smart Buildings & Home Automation
194 * Logistics and Supply Chain Management
195 * Smart Metering
196 * Smart Agriculture
197 * Smart Cities
198 * Smart Factory
199
200
201 == 1.5 Hardware Variants ==
202
203
204 (% border="1" style="background-color:#f7faff; width:500px" %)
205 |(% style="width:103px" %)**Model**|(% style="width:131px" %)**Photo**|(% style="width:334px" %)**Description**
206 |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)[[image:1653296302983-697.png]]|(% style="width:334px" %)(((
207 * 2 x Digital Input (Bi-direction)
208 * 2 x Digital Output
209 * 2 x Relay Output (5A@250VAC / 30VDC)
210 * 2 x 0~~20mA Analog Input (res:0.01mA)
211 * 2 x 0~~30V Analog Input (res:0.01v)
212 * 1 x Counting Port
213 )))
214
215
216 = 2. Power ON Device =
217
218
219 (((
220 The LT controller can be powered by 7 ~~ 24V DC power source. Connect VIN to Power Input V+ and GND to power input V- to power the LT controller.
221 )))
222
223 (((
224 PWR will on when device is properly powered.
225
226
227 )))
228
229 [[image:1653297104069-180.png]]
230
231
232
233 = 3. Operation Mode =
234
235
236 == 3.1 How it works? ==
237
238
239 (((
240 The LT is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the LT. It will auto join the network via OTAA. For LT-22222-L, the LED will show the Join status: After power on (% style="color:green" %)**TX LED**(%%) will fast blink 5 times, LT-22222-L will enter working mode and start to JOIN LoRaWAN network. (% style="color:green" %)**TX LED**(%%) will be on for 5 seconds after joined in network. When there is message from server, the RX LED will be on for 1 second. 
241 )))
242
243 (((
244 In case user can't set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>||anchor="H4.UseATCommand"]] to set the keys in the devices.
245 )))
246
247
248
249 == 3.2 Example to join LoRaWAN network ==
250
251
252 (((
253 This chapter shows an example for how to join the TTN LoRaWAN Network. Below is the network structure, we use our LG308 as LoRaWAN gateway here. 
254
255
256 )))
257
258 [[image:image-20220523172350-1.png||height="266" width="864"]]
259
260
261 (((
262 The LG308 is already set to connect to [[TTN network >>url:https://www.thethingsnetwork.org/]]. So what we need to do now is only configure register this device to TTN:
263
264
265 )))
266
267 (((
268 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
269 )))
270
271 (((
272 Each LT is shipped with a sticker with the default device EUI as below:
273 )))
274
275 [[image:1653297924498-393.png]]
276
277
278 Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
279
280 **Add APP EUI in the application.**
281
282 [[image:1653297955910-247.png||height="321" width="716"]]
283
284
285 **Add APP KEY and DEV EUI**
286
287 [[image:1653298023685-319.png]]
288
289
290
291 (((
292 (% style="color:blue" %)**Step 2**(%%): Power on LT and it will auto join to the TTN network. After join success, it will start to upload message to TTN and user can see in the panel.
293
294
295 )))
296
297 [[image:1653298044601-602.png||height="405" width="709"]]
298
299
300
301 == 3.3 Uplink Payload ==
302
303
304 There are five working modes + one interrupt mode on LT for different type application:
305
306 * (% style="color:blue" %)**MOD1**(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
307 * (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO
308 * (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO
309 * (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
310 * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
311 * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
312
313
314
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
447 === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
448
449
450 **LT22222-L**: This mode the DI1 is used as a counting pin.
451
452 [[image:image-20220523181246-5.png]]
453
454 (((
455
456
457 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
458 )))
459
460 [[image:image-20220523181301-6.png]]
461
462 * RO is for relay. ROx=1 : close，ROx=0 always open.
463 * FIRST: Indicate this is the first packet after join network.
464 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
465
466 (((
467 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
468 )))
469
470
471 (((
472 **To use counting mode, please run:**
473 )))
474
475 (% class="box infomessage" %)
476 (((
477 (((
478 (((
479 **AT+MOD=3**
480 )))
481
482 (((
483 **ATZ**
484 )))
485 )))
486 )))
487
488 (((
489 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
490 )))
491
492
493
494 === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
495
496
497 (((
498 **LT22222-L**: This mode the DI1 is used as a counting pin.
499 )))
500
501 (((
502 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.
503 )))
504
505 [[image:image-20220523181903-8.png]]
506
507
508 (((
509 (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
510 )))
511
512 [[image:image-20220523181727-7.png]]
513
514 * RO is for relay. ROx=1 : close，ROx=0 always open.
515 * FIRST: Indicate this is the first packet after join network.
516 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
517
518 (((
519 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
520 )))
521
522 (((
523
524
525 **To use this mode, please run:**
526 )))
527
528 (% class="box infomessage" %)
529 (((
530 (((
531 (((
532 **AT+MOD=4**
533 )))
534
535 (((
536 **ATZ**
537 )))
538 )))
539 )))
540
541
542 (((
543 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
544 )))
545
546 (((
547
548
549 **Plus below command for AVI1 Counting:**
550
551
552 (% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
553
554 (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
555
556 (% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**  (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
557
558 (% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**  (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
559 )))
560
561
562
563 === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
564
565
566 **LT22222-L**: This mode the DI1 is used as a counting pin.
567
568 [[image:image-20220523182334-9.png]]
569
570 (((
571
572
573 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
574 )))
575
576 * RO is for relay. ROx=1 : close，ROx=0 always open.
577 * FIRST: Indicate this is the first packet after join network.
578 * (((
579 DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
580 )))
581
582 (((
583 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
584 )))
585
586 (((
587
588
589 **To use this mode, please run:**
590 )))
591
592 (% class="box infomessage" %)
593 (((
594 (((
595 (((
596 **AT+MOD=5**
597 )))
598
599 (((
600 **ATZ**
601 )))
602 )))
603 )))
604
605 (((
606 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
607 )))
608
609
610
611 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
612
613
614 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
615
616 For example, if user has configured below commands:
617
618 * **AT+MOD=1 ** **~-~->**  The normal working mode
619 * **AT+ADDMOD6=1**   **~-~->**  Enable trigger
620
621 LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
622
623 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
624 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.**
625
626 (% style="color:#037691" %)**AT Command to set Trigger Condition**:
627
628
629 (% style="color:#4f81bd" %)**Trigger base on voltage**:
630
631 Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
632
633
634 **Example:**
635
636 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)
637
638 AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
639
640
641
642 (% style="color:#4f81bd" %)**Trigger base on current**:
643
644 Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
645
646
647 **Example:**
648
649 AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
650
651
652
653 (% style="color:#4f81bd" %)**Trigger base on DI status**:
654
655 DI status trigger Flag.
656
657 Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
658
659
660 **Example:**
661
662 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
663
664
665
666 (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
667
668 Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
669
670 Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
671
672 AA: Code for this downlink Command:
673
674 xx: 0: Limit for AV1 and AV2;  1: limit for AC1 and AC2 ; 2 DI1, DI2 trigger enable/disable
675
676 yy1 yy1: AC1 or AV1 low limit or DI1/DI2 trigger status.
677
678 yy2 yy2: AC1 or AV1 high limit.
679
680 yy3 yy3: AC2 or AV2 low limit.
681
682 Yy4 yy4: AC2 or AV2 high limit.
683
684
685 **Example1**: AA 00 13 88 00 00 00 00 00 00
686
687 Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
688
689
690 **Example2**: AA 02 01 00
691
692 Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
693
694
695
696 (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
697
698 MOD6 Payload : total 11 bytes payload
699
700 [[image:image-20220524085923-1.png]]
701
702
703 (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
704
705 [[image:image-20220524090106-2.png]]
706
707 * Each bits shows if the corresponding trigger has been configured.
708
709 **Example:**
710
711 10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
712
713
714
715 (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
716
717 [[image:image-20220524090249-3.png]]
718
719 * Each bits shows which status has been trigger on this uplink.
720
721 **Example:**
722
723 10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
724
725
726
727 (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
728
729 [[image:image-20220524090456-4.png]]
730
731 * Each bits shows which status has been trigger on this uplink.
732
733 **Example:**
734
735 00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
736
737 00000101: Means both DI1 and DI2 trigger are enabled.
738
739
740
741 (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
742
743 Downlink command to poll MOD6 status:
744
745 **AB 06**
746
747 When device got this command, it will send the MOD6 payload.
748
749
750
751 === 3.3.7 Payload Decoder ===
752
753 (((
754
755
756 **Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
757 )))
758
759
760
761 == 3.4 ​Configure LT via AT or Downlink ==
762
763
764 (((
765 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
766 )))
767
768 (((
769 (((
770 There are two kinds of Commands:
771 )))
772 )))
773
774 * (% 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]]
775
776 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
777
778
779 === 3.4.1 Common Commands ===
780
781
782 (((
783 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]]
784 )))
785
786
787
788 === 3.4.2 Sensor related commands ===
789
790
791 ==== 3.4.2.1 Set Transmit Interval ====
792
793
794 Set device uplink interval.
795
796 * (% style="color:#037691" %)**AT Command:**
797
798 (% style="color:blue" %)**AT+TDC=N **
799
800
801 **Example: **AT+TDC=30000. Means set interval to 30 seconds
802
803
804 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
805
806 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
807
808
809
810 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
811
812
813 Set work mode.
814
815 * (% style="color:#037691" %)**AT Command:**
816
817 (% style="color:blue" %)**AT+MOD=N  **
818
819
820 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
821
822
823 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
824
825 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
826
827
828
829 ==== 3.4.2.3 Poll an uplink ====
830
831
832 * (% style="color:#037691" %)**AT Command:**
833
834 There is no AT Command to poll uplink
835
836
837 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
838
839 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
840
841
842 **Example**: 0x08FF, ask device to send an Uplink
843
844
845
846 ==== 3.4.2.4 Enable Trigger Mode ====
847
848
849 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
850
851 * (% style="color:#037691" %)**AT Command:**
852
853 (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
854
855 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
856
857 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
858
859
860 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
861
862 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
863
864
865
866
867 ==== 3.4.2.5 Poll trigger settings ====
868
869
870 Poll trigger settings,
871
872 * (% style="color:#037691" %)**AT Command:**
873
874 There is no AT Command for this feature.
875
876
877 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
878
879 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
880
881
882
883 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
884
885
886 Enable Disable DI1/DI2/DI2 as trigger,
887
888 * (% style="color:#037691" %)**AT Command:**
889
890 (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
891
892
893 **Example:**
894
895 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
896
897 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
898
899 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
900
901
902
903 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
904
905
906 Set DI1 or DI3(for LT-33222-L) trigger.
907
908 * (% style="color:#037691" %)**AT Command:**
909
910 (% style="color:blue" %)**AT+TRIG1=a,b**
911
912 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
913
914 (% style="color:red" %)**b :** (%%)delay timing.
915
916
917 **Example:**
918
919 AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
920
921
922 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
923
924 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
925
926
927
928 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
929
930
931 Set DI2 trigger.
932
933 * (% style="color:#037691" %)**AT Command:**
934
935 (% style="color:blue" %)**AT+TRIG2=a,b**
936
937 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
938
939 (% style="color:red" %)**b :** (%%)delay timing.
940
941
942 **Example:**
943
944 AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
945
946
947 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
948
949 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG1=aa,0x(bb cc)
950
951
952
953 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
954
955
956 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
957
958 * (% style="color:#037691" %)**AT Command**
959
960 (% style="color:blue" %)**AT+ACLIM**
961
962
963 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
964
965 (% 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"]]
966
967
968
969 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
970
971
972 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
973
974 * (% style="color:#037691" %)**AT Command**
975
976 (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
977
978
979 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
980
981 (% 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"]]
982
983
984
985 ==== 3.4.2.11 Trigger – Set minimum interval ====
986
987
988 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
989
990 * (% style="color:#037691" %)**AT Command**
991
992 (% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
993
994
995 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
996
997 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
998
999 (((
1000
1001
1002 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
1003 )))
1004
1005
1006
1007 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1008
1009
1010 * (% style="color:#037691" %)**AT Command**
1011
1012 There is no AT Command to control Digital Output
1013
1014
1015 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1016 * (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1017
1018 (((
1019 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1020 )))
1021
1022 (((
1023 01: Low,  00: High ,  11: No action
1024 )))
1025
1026 [[image:image-20220524092754-5.png]]
1027
1028 (((
1029 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1030 )))
1031
1032 (((
1033 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1034 )))
1035
1036
1037
1038 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1039
1040
1041 * (% style="color:#037691" %)**AT Command**
1042
1043 There is no AT Command to control Digital Output
1044
1045
1046 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1047
1048 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1049
1050
1051 This is to control the digital output time of DO pin. Include four bytes:
1052
1053 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1054
1055 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1056
1057 01: DO pins will change back to original state after timeout.
1058
1059 00: DO pins will change to an inverter state after timeout 
1060
1061
1062 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1063
1064 [[image:image-20220524093238-6.png]]
1065
1066
1067 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1068
1069 [[image:image-20220524093328-7.png]]
1070
1071
1072 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1073
1074 [[image:image-20220524093351-8.png]]
1075
1076
1077 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
1078
1079 Latching time. Unit: ms
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 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1166
1167
1168 **Example payload:**
1169
1170 **~1. 05 01 11 07 D**
1171
1172 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1173
1174 **2. 05 01 10 07 D0**
1175
1176 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1177
1178 **3. 05 00 01 07 D0**
1179
1180 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1181
1182 **4. 05 00 00 07 D0**
1183
1184 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1185
1186
1187
1188 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1189
1190
1191 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1192
1193 * (% style="color:#037691" %)**AT Command:**
1194
1195 (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1196
1197
1198 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1199
1200 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1201
1202
1203
1204 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1205
1206
1207 * (% style="color:#037691" %)**AT Command:**
1208
1209 (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1210
1211 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1212
1213 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1214
1215
1216 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1217
1218 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1219
1220
1221
1222 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1223
1224
1225 Clear counting for counting mode
1226
1227 * (% style="color:#037691" %)**AT Command:**
1228
1229 (% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1230
1231
1232 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1233
1234 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1235
1236
1237
1238 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1239
1240
1241 * (% style="color:#037691" %)**AT Command:**
1242
1243 (% 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)
1244
1245
1246 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1247
1248 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1249
1250 (((
1251 range: aa bb cc:0 to 16777215,  (unit:second)
1252 )))
1253
1254
1255
1256 ==== 3.4.2.20 Reset save DR DO state ====
1257
1258
1259 * (% style="color:#037691" %)**AT Command:**
1260
1261 (% style="color:blue" %)**AT+RODORET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1262
1263 (% style="color:blue" %)**AT+RODORET=0    **(%%)~/~/ After the device is reset, the previously saved RODO state (only MOD2 to MOD5) is read, and its state is not changed when it is reconnected to the network.
1264
1265
1266 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1267
1268 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1269
1270
1271
1272 ==== 3.4.2.21 Encrypted payload ====
1273
1274
1275 * (% style="color:#037691" %)**AT Command:**
1276
1277 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1278
1279 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1280
1281
1282
1283 ==== 3.4.2.22 Get sensor value ====
1284
1285
1286 * (% style="color:#037691" %)**AT Command:**
1287
1288 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1289
1290 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1291
1292
1293
1294 ==== 3.4.2.23 Resets the downlink packet count ====
1295
1296
1297 * (% style="color:#037691" %)**AT Command:**
1298
1299 (% 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)
1300
1301 (% 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.
1302
1303
1304
1305
1306 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1307
1308
1309 * (% style="color:#037691" %)**AT Command:**
1310
1311 (% 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)
1312
1313 (% 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.
1314
1315
1316 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1317
1318 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1319
1320
1321
1322
1323 ==== 3.4.2.25 Copy downlink to uplink ====
1324
1325
1326 * (% style="color:#037691" %)**AT Command**(%%)**:**
1327
1328 (% 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.
1329
1330 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.
1331
1332
1333 [[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"]]
1334
1335 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1336
1337
1338
1339 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]
1340
1341 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1342
1343
1344
1345 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1346
1347
1348 * (((
1349 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1350
1351 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1352
1353
1354 )))
1355
1356 **Example：**
1357
1358 [[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"]]
1359
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
1412 == 3.6 Interface Detail ==
1413
1414
1415 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1416
1417
1418 Support NPN Type sensor
1419
1420 [[image:1653356991268-289.png]]
1421
1422
1423
1424 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1425
1426
1427 (((
1428 The DI port of LT-22222-L can support NPN or PNP output sensor.
1429 )))
1430
1431 (((
1432 (((
1433 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.
1434
1435
1436 )))
1437 )))
1438
1439 [[image:1653357170703-587.png]]
1440
1441 (((
1442 (((
1443 When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1444 )))
1445 )))
1446
1447 (((
1448
1449 )))
1450
1451 (((
1452 (% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1453 )))
1454
1455 (((
1456 This type of sensor will output a low signal GND when active.
1457 )))
1458
1459 * (((
1460 Connect sensor's output to DI1-
1461 )))
1462 * (((
1463 Connect sensor's VCC to DI1+.
1464 )))
1465
1466 (((
1467 So when sensor active, the current between NEC2501 pin1 and pin2 is：
1468 )))
1469
1470 (((
1471 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1472 )))
1473
1474 (((
1475 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.
1476 )))
1477
1478 (((
1479
1480
1481
1482 )))
1483
1484 (((
1485 (% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1486 )))
1487
1488 (((
1489 This type of sensor will output a high signal (example 24v) when active.
1490 )))
1491
1492 * (((
1493 Connect sensor's output to DI1+
1494 )))
1495 * (((
1496 Connect sensor's GND DI1-.
1497 )))
1498
1499 (((
1500 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1501 )))
1502
1503 (((
1504 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1505 )))
1506
1507 (((
1508 If **DI1+ = 24v**, the[[image:1653968155772-850.png||height="23" width="19"]] 24mA , So the LT-22222-L will be able to detect this high active signal.
1509 )))
1510
1511 (((
1512
1513
1514
1515 )))
1516
1517 (((
1518 (% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1519 )))
1520
1521 (((
1522 Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1523 )))
1524
1525 * (((
1526 Connect sensor's output to DI1+ with a serial 50K resistor
1527 )))
1528 * (((
1529 Connect sensor's GND DI1-.
1530 )))
1531
1532 (((
1533 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1534 )))
1535
1536 (((
1537 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1538 )))
1539
1540 (((
1541 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.
1542 )))
1543
1544
1545
1546 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1547
1548
1549 NPN output: GND or Float. Max voltage can apply to output pin is 36v.
1550
1551 [[image:1653357531600-905.png]]
1552
1553
1554
1555 === 3.6.4 Analog Input Interface ===
1556
1557
1558 The analog input interface is as below. The LT will measure the IN2 voltage so to calculate the current pass the Load. The formula is:
1559
1560
1561 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1562
1563 [[image:1653357592296-182.png]]
1564
1565 Example to connect a 4~~20mA sensor
1566
1567 We take the wind speed sensor as an example for reference only.
1568
1569
1570 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1571
1572 **Red:  12~~24v**
1573
1574 **Yellow:  4~~20mA**
1575
1576 **Black:  GND**
1577
1578
1579 **Connection diagram:**
1580
1581 [[image:1653357640609-758.png]]
1582
1583 [[image:1653357648330-671.png||height="155" width="733"]]
1584
1585
1586
1587 === 3.6.5 Relay Output ===
1588
1589
1590 (((
1591 The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device’s Power Line to in serial of RO1_1 and RO_2. Such as below:
1592 )))
1593
1594 [[image:image-20220524100215-9.png]]
1595
1596
1597 [[image:image-20220524100215-10.png||height="382" width="723"]]
1598
1599
1600
1601 == 3.7 LEDs Indicators ==
1602
1603
1604 [[image:image-20220524100748-11.png]]
1605
1606
1607
1608 = 4. Use AT Command =
1609
1610
1611 == 4.1 Access AT Command ==
1612
1613
1614 (((
1615 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.
1616 )))
1617
1618 (((
1619
1620 )))
1621
1622 [[image:1653358238933-385.png]]
1623
1624
1625 (((
1626 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:
1627 )))
1628
1629 [[image:1653358355238-883.png]]
1630
1631
1632 (((
1633 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/]]
1634 )))
1635
1636 (((
1637 AT+<CMD>?        : Help on <CMD>
1638 )))
1639
1640 (((
1641 AT+<CMD>         : Run <CMD>
1642 )))
1643
1644 (((
1645 AT+<CMD>=<value> : Set the value
1646 )))
1647
1648 (((
1649 AT+<CMD>=?       :  Get the value
1650 )))
1651
1652 (((
1653 ATZ: Trig a reset of the MCU
1654 )))
1655
1656 (((
1657 AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1658 )))
1659
1660 (((
1661 AT+DEUI: Get or Set the Device EUI
1662 )))
1663
1664 (((
1665 AT+DADDR: Get or Set the Device Address
1666 )))
1667
1668 (((
1669 AT+APPKEY: Get or Set the Application Key
1670 )))
1671
1672 (((
1673 AT+NWKSKEY: Get or Set the Network Session Key
1674 )))
1675
1676 (((
1677 AT+APPSKEY:  Get or Set the Application Session Key
1678 )))
1679
1680 (((
1681 AT+APPEUI:  Get or Set the Application EUI
1682 )))
1683
1684 (((
1685 AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1686 )))
1687
1688 (((
1689 AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1690 )))
1691
1692 (((
1693 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1694 )))
1695
1696 (((
1697 AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1698 )))
1699
1700 (((
1701 AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1702 )))
1703
1704 (((
1705 AT+RX2FQ: Get or Set the Rx2 window frequency
1706 )))
1707
1708 (((
1709 AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1710 )))
1711
1712 (((
1713 AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1714 )))
1715
1716 (((
1717 AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1718 )))
1719
1720 (((
1721 AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1722 )))
1723
1724 (((
1725 AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1726 )))
1727
1728 (((
1729 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1730 )))
1731
1732 (((
1733 AT+NWKID: Get or Set the Network ID
1734 )))
1735
1736 (((
1737 AT+FCU: Get or Set the Frame Counter Uplink
1738 )))
1739
1740 (((
1741 AT+FCD: Get or Set the Frame Counter Downlink
1742 )))
1743
1744 (((
1745 AT+CLASS: Get or Set the Device Class
1746 )))
1747
1748 (((
1749 AT+JOIN: Join network
1750 )))
1751
1752 (((
1753 AT+NJS: Get OTAA Join Status
1754 )))
1755
1756 (((
1757 AT+SENDB: Send hexadecimal data along with the application port
1758 )))
1759
1760 (((
1761 AT+SEND: Send text data along with the application port
1762 )))
1763
1764 (((
1765 AT+RECVB: Print last received data in binary format (with hexadecimal values)
1766 )))
1767
1768 (((
1769 AT+RECV: Print last received data in raw format
1770 )))
1771
1772 (((
1773 AT+VER:  Get current image version and Frequency Band
1774 )))
1775
1776 (((
1777 AT+CFM: Get or Set the confirmation mode (0-1)
1778 )))
1779
1780 (((
1781 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1782 )))
1783
1784 (((
1785 AT+SNR: Get the SNR of the last received packet
1786 )))
1787
1788 (((
1789 AT+RSSI: Get the RSSI of the last received packet
1790 )))
1791
1792 (((
1793 AT+TDC: Get or set the application data transmission interval in ms
1794 )))
1795
1796 (((
1797 AT+PORT: Get or set the application port
1798 )))
1799
1800 (((
1801 AT+DISAT: Disable AT commands
1802 )))
1803
1804 (((
1805 AT+PWORD: Set password, max 9 digits
1806 )))
1807
1808 (((
1809 AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1810 )))
1811
1812 (((
1813 AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1814 )))
1815
1816 (((
1817 AT+CFG: Print all settings
1818 )))
1819
1820
1821
1822 == 4.2 Common AT Command Sequence ==
1823
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
1870 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1871
1872 (((
1873
1874
1875 (((
1876 (% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1877 )))
1878 )))
1879
1880 (((
1881 (% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
1882 )))
1883
1884 (((
1885 (% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1886 )))
1887
1888 (((
1889 (% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
1890 )))
1891
1892 (((
1893 (% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
1894 )))
1895
1896 (((
1897 (% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
1898 )))
1899
1900 (((
1901 (% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
1902 )))
1903
1904 (((
1905 (% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
1906 )))
1907
1908 (((
1909 (% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
1910 )))
1911
1912 (((
1913 (% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
1914 )))
1915
1916 (((
1917 (% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
1918 )))
1919
1920 (((
1921 (% 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.
1922 )))
1923
1924 (((
1925 (% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
1926
1927
1928 )))
1929
1930 (((
1931 (% style="color:red" %)**Note:**
1932 )))
1933
1934 (((
1935 **~1. Make sure the device is set to ABP mode in the IoT Server.**
1936
1937 **2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
1938
1939 **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?
1940 dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1941
1942 **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**
1943
1944
1945 )))
1946
1947 (((
1948 [[image:1653359097980-169.png||height="188" width="729"]]
1949 )))
1950
1951 (((
1952
1953 )))
1954
1955
1956 === 4.2.3 Change to Class A ===
1957
1958
1959 (((
1960 (% style="color:blue" %)**If sensor JOINED:**
1961
1962 (% style="background-color:#dcdcdc" %)**AT+CLASS=A
1963 ATZ**
1964 )))
1965
1966
1967
1968 = 5. FAQ =
1969
1970
1971 == 5.1 How to upgrade the image? ==
1972
1973
1974 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
1975
1976 * Support new features
1977 * For bug fix
1978 * Change LoRaWAN bands.
1979
1980 Below shows the hardware connection for how to upload an image to the LT:
1981
1982 [[image:1653359603330-121.png]]
1983
1984
1985 (((
1986 (% 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]].
1987 (% 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]].
1988 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
1989
1990
1991 (((
1992 (% style="color:blue" %)**For LT-22222-L**(%%):
1993 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.
1994 )))
1995
1996
1997 )))
1998
1999 [[image:image-20220524103407-12.png]]
2000
2001 [[image:image-20220524103429-13.png]]
2002
2003 [[image:image-20220524104033-15.png]]
2004
2005
2006 (% style="color:red" %)**Notice**(%%): In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
2007
2008
2009 [[image:1653360054704-518.png||height="186" width="745"]]
2010
2011
2012 (((
2013 (((
2014
2015
2016 == 5.2 How to change the LoRa Frequency Bands/Region? ==
2017
2018
2019 )))
2020 )))
2021
2022 (((
2023 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2024 )))
2025
2026 (((
2027
2028
2029
2030 == 5.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2031
2032
2033 )))
2034
2035 (((
2036 (((
2037 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2038 )))
2039 )))
2040
2041 (((
2042 (((
2043 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2044
2045
2046 )))
2047 )))
2048
2049 (((
2050 (% 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.
2051
2052
2053 )))
2054
2055 (((
2056 [[image:1653360231087-571.png||height="401" width="727"]]
2057
2058
2059 )))
2060
2061 (((
2062 (% 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.**
2063 )))
2064
2065
2066
2067 (((
2068 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2069
2070
2071 )))
2072
2073 (((
2074 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2075 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2076 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2077 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2078 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2079 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2080 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2081 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2082 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2083 )))
2084
2085
2086 (((
2087 As shown in below:
2088 )))
2089
2090 [[image:1653360498588-932.png||height="485" width="726"]]
2091
2092
2093
2094 == 5.4 Can I see counting event in Serial? ==
2095
2096
2097 (((
2098 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.
2099
2100
2101
2102 == 5.5 Can i use point to point communication for LT-22222-L? ==
2103
2104
2105 Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]  ，this is [[firmware>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AADKXQ2v5ZT-S3sxdmbvE7UAa/LT-22222-L/image?dl=0&subfolder_nav_tracking=1]].
2106
2107
2108
2109 )))
2110
2111 (((
2112 == 5.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2113
2114
2115 If the device is not shut down, but directly powered off.
2116
2117 It will default that this is a power-off state.
2118
2119 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2120
2121 After restart, the status before power failure will be read from flash.
2122
2123
2124
2125 == 5.7 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2126
2127
2128 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2129
2130
2131 [[image:image-20221006170630-1.png||height="610" width="945"]]
2132
2133
2134 == 5.8 Can LT22222 save RO state? ==
2135
2136 Firmware version needs to be no less than 1.6.0.
2137
2138
2139 = 6. Trouble Shooting =
2140
2141
2142 )))
2143
2144 (((
2145 (((
2146 == 6.1 Downlink doesn't work, how to solve it? ==
2147
2148
2149 )))
2150 )))
2151
2152 (((
2153 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2154 )))
2155
2156 (((
2157
2158
2159
2160 == 6.2 Have trouble to upload image. ==
2161
2162
2163 )))
2164
2165 (((
2166 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2167 )))
2168
2169 (((
2170
2171
2172
2173 == 6.3 Why I can't join TTN in US915 /AU915 bands? ==
2174
2175
2176 )))
2177
2178 (((
2179 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2180 )))
2181
2182
2183
2184 = 7. Order Info =
2185
2186
2187 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2188
2189 (% style="color:#4f81bd" %)**XXX:**
2190
2191 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2192 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2193 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2194 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2195 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2196 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2197 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2198 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2199 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2200
2201
2202 = 8. Packing Info =
2203
2204
2205 **Package Includes**:
2206
2207 * LT-22222-L I/O Controller x 1
2208 * Stick Antenna for LoRa RF part x 1
2209 * Bracket for controller x1
2210 * Program cable x 1
2211
2212 **Dimension and weight**:
2213
2214 * Device Size: 13.5 x 7 x 3 cm
2215 * Device Weight: 105g
2216 * Package Size / pcs : 14.5 x 8 x 5 cm
2217 * Weight / pcs : 170g
2218
2219
2220 = 9. Support =
2221
2222
2223 * (((
2224 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.
2225 )))
2226 * (((
2227 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]]
2228
2229
2230
2231
2232 )))
2233
2234 = 10. Reference​​​​​ =
2235
2236
2237 * 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]]
2238 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2239 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]