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Version 122.10 by Xiaoling on 2023/06/08 17:27
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1 (% style="text-align:center" %)
2 [[image:image-20220523163353-1.jpeg||height="604" width="500"]]
3
4
5
6 **Table of Contents:**
7
8 {{toc/}}
9
10
11
12
13
14
15
16 = 1.Introduction =
17
18 == 1.1 What is LT Series I/O Controller ==
19
20 (((
21
22
23 (((
24 The Dragino (% style="color:blue" %)**LT series I/O Modules**(%%) are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as:** (% style="color:blue" %)analog current Input, analog voltage input(%%)**(% style="color:blue" %), **relay output**, **digital input**(%%) and (% style="color:blue" %)**digital output**(%%) etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
25 )))
26 )))
27
28 (((
29 The LT I/O Controllers allows the user to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
30 )))
31
32 (((
33 The LT I/O Controllers is aiming to provide an (% style="color:blue" %)**easy and low cost installation** (%%)by using LoRa wireless technology.
34 )))
35
36 (((
37 The use environment includes:
38 )))
39
40 (((
41 1) If user's area has LoRaWAN service coverage, they can just install the I/O controller and configure it to connect the LoRaWAN provider via wireless.
42 )))
43
44 (((
45 2) User can set up a LoRaWAN gateway locally and configure the controller to connect to the gateway via wireless.
46
47
48 )))
49
50 (((
51 [[image:1653295757274-912.png]]
52
53
54 )))
55
56 == 1.2  Specifications ==
57
58 (((
59
60
61 (% style="color:#037691" %)**Hardware System:**
62 )))
63
64 * (((
65 STM32L072xxxx MCU
66 )))
67 * (((
68 SX1276/78 Wireless Chip 
69 )))
70 * (((
71 (((
72 Power Consumption:
73 )))
74
75 * (((
76 Idle: 4mA@12v
77 )))
78 * (((
79 20dB Transmit: 34mA@12v
80 )))
81 )))
82
83 (((
84
85
86 (% style="color:#037691" %)**Interface for Model: LT22222-L:**
87 )))
88
89 * (((
90 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
91 )))
92 * (((
93 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
94 )))
95 * (((
96 2 x Relay Output (5A@250VAC / 30VDC)
97 )))
98 * (((
99 2 x 0~~20mA Analog Input (res:0.01mA)
100 )))
101 * (((
102 2 x 0~~30V Analog Input (res:0.01v)
103 )))
104 * (((
105 Power Input 7~~ 24V DC. 
106 )))
107
108 (((
109
110
111 (% style="color:#037691" %)**LoRa Spec:**
112 )))
113
114 * (((
115 (((
116 Frequency Range:
117 )))
118
119 * (((
120 Band 1 (HF): 862 ~~ 1020 Mhz
121 )))
122 * (((
123 Band 2 (LF): 410 ~~ 528 Mhz
124 )))
125 )))
126 * (((
127 168 dB maximum link budget.
128 )))
129 * (((
130 +20 dBm - 100 mW constant RF output vs.
131 )))
132 * (((
133 +14 dBm high efficiency PA.
134 )))
135 * (((
136 Programmable bit rate up to 300 kbps.
137 )))
138 * (((
139 High sensitivity: down to -148 dBm.
140 )))
141 * (((
142 Bullet-proof front end: IIP3 = -12.5 dBm.
143 )))
144 * (((
145 Excellent blocking immunity.
146 )))
147 * (((
148 Low RX current of 10.3 mA, 200 nA register retention.
149 )))
150 * (((
151 Fully integrated synthesizer with a resolution of 61 Hz.
152 )))
153 * (((
154 FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
155 )))
156 * (((
157 Built-in bit synchronizer for clock recovery.
158 )))
159 * (((
160 Preamble detection.
161 )))
162 * (((
163 127 dB Dynamic Range RSSI.
164 )))
165 * (((
166 Automatic RF Sense and CAD with ultra-fast AFC.
167 )))
168 * (((
169 Packet engine up to 256 bytes with CRC.
170
171
172
173 )))
174
175 == 1.3 Features ==
176
177
178 * LoRaWAN Class A & Class C protocol
179
180 * Optional Customized LoRa Protocol
181
182 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
183
184 * AT Commands to change parameters
185
186 * Remote configure parameters via LoRa Downlink
187
188 * Firmware upgradable via program port
189
190 * Counting
191
192
193
194 == 1.4  Applications ==
195
196
197 * Smart Buildings & Home Automation
198
199 * Logistics and Supply Chain Management
200
201 * Smart Metering
202
203 * Smart Agriculture
204
205 * Smart Cities
206
207 * Smart Factory
208
209
210
211 == 1.5 Hardware Variants ==
212
213
214 (% border="1" style="background-color:#f2f2f2; width:500px" %)
215 |(% style="background-color:#d9e2f3; color:#0070c0; width:103px" %)**Model**|(% style="background-color:#d9e2f3; color:#0070c0; width:131px" %)**Photo**|(% style="background-color:#d9e2f3; color:#0070c0; width:334px" %)**Description**
216 |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
217 (% style="text-align:center" %)
218 [[image:image-20230424115112-1.png||height="106" width="58"]]
219 )))|(% style="width:334px" %)(((
220 * 2 x Digital Input (Bi-direction)
221 * 2 x Digital Output
222 * 2 x Relay Output (5A@250VAC / 30VDC)
223 * 2 x 0~~20mA Analog Input (res:0.01mA)
224 * 2 x 0~~30V Analog Input (res:0.01v)
225 * 1 x Counting Port
226 )))
227
228
229
230 = 2. Power ON Device =
231
232
233 (((
234 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.
235 )))
236
237 (((
238 PWR will on when device is properly powered.
239
240
241 )))
242
243 [[image:1653297104069-180.png]]
244
245
246 = 3. Operation Mode =
247
248 == 3.1 How it works? ==
249
250
251 (((
252 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. 
253 )))
254
255 (((
256 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.
257 )))
258
259
260 == 3.2 Example to join LoRaWAN network ==
261
262
263 (((
264 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. 
265
266
267 )))
268
269 [[image:image-20220523172350-1.png||height="266" width="864"]]
270
271
272 (((
273 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:
274
275
276 )))
277
278 (((
279 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
280 )))
281
282 (((
283 Each LT is shipped with a sticker with the default device EUI as below:
284 )))
285
286 [[image:image-20230425173427-2.png||height="246" width="530"]]
287
288
289 Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
290
291 **Add APP EUI in the application.**
292
293 [[image:1653297955910-247.png||height="321" width="716"]]
294
295
296 **Add APP KEY and DEV EUI**
297
298 [[image:1653298023685-319.png]]
299
300
301
302 (((
303 (% 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.
304
305
306 )))
307
308 [[image:1653298044601-602.png||height="405" width="709"]]
309
310
311 == 3.3 Uplink Payload ==
312
313
314 There are five working modes + one interrupt mode on LT for different type application:
315
316 * (% style="color:blue" %)**MOD1**(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
317
318 * (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO
319
320 * (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO
321
322 * (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
323
324 * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
325
326 * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
327
328
329
330 === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
331
332
333 (((
334 The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default. (% style="display:none" %)
335
336 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
337 |(% style="background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|(% style="background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**
338 |Value|(((
339 AVI1 voltage
340 )))|(((
341 AVI2 voltage
342 )))|(((
343 ACI1 Current
344 )))|(((
345 ACI2 Current
346 )))|DIDORO*|(((
347 Reserve
348 )))|MOD
349 )))
350
351 (((
352
353
354 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
355
356 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
357 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
358 |RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
359 )))
360
361
362 * RO is for relay. ROx=1 : close，ROx=0 always open.
363 * DI is for digital input. DIx=1: high or float, DIx=0: low.
364 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
365
366 (% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
367
368 For example if payload is: [[image:image-20220523175847-2.png]]
369
370
371 **The value for the interface is:  **
372
373 AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
374
375 AVI2 channel voltage is 0x04AC/1000=1.196V
376
377 ACI1 channel current is 0x1310/1000=4.880mA
378
379 ACI2 channel current is 0x1300/1000=4.864mA
380
381 The last byte 0xAA= 10101010(B) means
382
383 * [1] RO1 relay channel is close and the RO1 LED is ON.
384 * [0] RO2 relay channel is open and RO2 LED is OFF;
385
386 **LT22222-L:**
387
388 * [1] DI2 channel is high input and DI2 LED is ON;
389 * [0] DI1 channel is low input;
390
391 * [0] DO3 channel output state
392 ** DO3 is float in case no load between DO3 and V+.;
393 ** DO3 is high in case there is load between DO3 and V+.
394 ** DO3 LED is off in both case
395 * [1] DO2 channel output is low and DO2 LED is ON.
396 * [0] DO1 channel output state
397 ** DO1 is float in case no load between DO1 and V+.;
398 ** DO1 is high in case there is load between DO1 and V+.
399 ** DO1 LED is off in both case
400
401 === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
402
403
404 (((
405 **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
406 )))
407
408 (((
409 Total : 11 bytes payload
410
411 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
412 |(% style="background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|(% style="background-color:#D9E2F3;color:#0070C0" %)**4**|(% style="background-color:#D9E2F3;color:#0070C0" %)**4**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**
413 |Value|COUNT1|COUNT2 |DIDORO*|(((
414 Reserve
415 )))|MOD
416 )))
417
418 (((
419
420
421 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
422
423 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
424 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
425 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
426
427 RO is for relay. ROx=1 : close，ROx=0 always open.
428 )))
429
430 * FIRST: Indicate this is the first packet after join network.
431 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
432
433 (((
434 (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
435 )))
436
437 (((
438
439
440 **To use counting mode, please run:**
441 )))
442
443 (% class="box infomessage" %)
444 (((
445 (((
446 (((
447 **AT+MOD=2**
448 )))
449
450 (((
451 **ATZ**
452 )))
453 )))
454 )))
455
456 (((
457
458
459 (% style="color:#4f81bd" %)**AT Commands for counting:**
460
461
462 )))
463
464 (((
465 **For LT22222-L:**
466
467
468 (% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
469
470 (% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
471
472 (% style="color:blue" %)**AT+TRIG2=0,100**(%%)**  (set DI2 port to trigger on low level, valid signal is 100ms) **
473
474 (% style="color:blue" %)**AT+TRIG2=1,100**(%%)**  (set DI2 port to trigger on high level, valid signal is 100ms ) **
475
476 (% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set COUNT1 value to 60)**
477
478 (% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set COUNT2 value to 60)**
479 )))
480
481
482 === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
483
484
485 **LT22222-L**: This mode the DI1 is used as a counting pin.
486
487 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
488 |(% style="background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|(% style="background-color:#D9E2F3;color:#0070C0" %)**4**|(% style="background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**
489 |Value|COUNT1|(((
490 ACI1 Current
491 )))|(((
492 ACI2 Current
493 )))|DIDORO*|Reserve|MOD
494
495 (((
496
497
498 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
499
500 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
501 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
502 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
503 )))
504
505
506 * RO is for relay. ROx=1 : close，ROx=0 always open.
507 * FIRST: Indicate this is the first packet after join network.
508 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
509
510 (((
511 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
512 )))
513
514
515 (((
516 **To use counting mode, please run:**
517 )))
518
519 (% class="box infomessage" %)
520 (((
521 (((
522 (((
523 **AT+MOD=3**
524 )))
525
526 (((
527 **ATZ**
528 )))
529 )))
530 )))
531
532 (((
533 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
534 )))
535
536
537 === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
538
539
540 (((
541 **LT22222-L**: This mode the DI1 is used as a counting pin.
542 )))
543
544 (((
545 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.
546
547 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
548 |(% style="background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|(% style="background-color:#D9E2F3;color:#0070C0" %)**4**|(% style="background-color:#D9E2F3;color:#0070C0" %)**4**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**
549 |Value|COUNT1|AVI1 Counting|DIDORO*|(((
550 Reserve)))|MOD
551 )))
552
553
554 (((
555 (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
556
557 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
558 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
559 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
560 )))
561
562
563 * RO is for relay. ROx=1 : close，ROx=0 always open.
564 * FIRST: Indicate this is the first packet after join network.
565 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
566
567 (((
568 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
569 )))
570
571 (((
572
573
574 **To use this mode, please run:**
575 )))
576
577 (% class="box infomessage" %)
578 (((
579 (((
580 (((
581 **AT+MOD=4**
582 )))
583
584 (((
585 **ATZ**
586 )))
587 )))
588 )))
589
590
591 (((
592 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
593 )))
594
595 (((
596
597
598 **Plus below command for AVI1 Counting:**
599
600
601 (% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
602
603 (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
604
605 (% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**  (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
606
607 (% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**  (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
608 )))
609
610
611 === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
612
613
614 **LT22222-L**: This mode the DI1 is used as a counting pin.
615
616 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
617 |(% style="background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|(% style="background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="background-color:#D9E2F3;color:#0070C0" %)**2**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**|(% style="background-color:#D9E2F3;color:#0070C0" %)**1**
618 |Value|(((
619 AVI1 voltage
620 )))|(((
621 AVI2 voltage
622 )))|(((
623 ACI1 Current
624 )))|COUNT1|DIDORO*|(((
625 Reserve
626 )))|MOD
627
628 (((
629
630
631 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
632
633 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
634 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
635 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
636 )))
637
638 * RO is for relay. ROx=1 : close，ROx=0 always open.
639 * FIRST: Indicate this is the first packet after join network.
640 * (((
641 DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
642 )))
643
644 (((
645 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
646 )))
647
648 (((
649
650
651 **To use this mode, please run:**
652 )))
653
654 (% class="box infomessage" %)
655 (((
656 (((
657 (((
658 **AT+MOD=5**
659 )))
660
661 (((
662 **ATZ**
663 )))
664 )))
665 )))
666
667 (((
668 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
669 )))
670
671
672 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
673
674
675 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
676
677 For example, if user has configured below commands:
678
679 * **AT+MOD=1 ** **~-~->**  The normal working mode
680 * **AT+ADDMOD6=1**   **~-~->**  Enable trigger
681
682 LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
683
684 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
685 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.**
686
687 (% style="color:#037691" %)**AT Command to set Trigger Condition**:
688
689
690 (% style="color:#4f81bd" %)**Trigger base on voltage**:
691
692 Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
693
694
695 **Example:**
696
697 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)
698
699 AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
700
701
702
703 (% style="color:#4f81bd" %)**Trigger base on current**:
704
705 Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
706
707
708 **Example:**
709
710 AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
711
712
713
714 (% style="color:#4f81bd" %)**Trigger base on DI status**:
715
716 DI status trigger Flag.
717
718 Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
719
720
721 **Example:**
722
723 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
724
725
726 (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
727
728 Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
729
730 Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
731
732 AA: Code for this downlink Command:
733
734 xx: 0: Limit for AV1 and AV2;  1: limit for AC1 and AC2 ; 2 DI1, DI2 trigger enable/disable
735
736 yy1 yy1: AC1 or AV1 low limit or DI1/DI2 trigger status.
737
738 yy2 yy2: AC1 or AV1 high limit.
739
740 yy3 yy3: AC2 or AV2 low limit.
741
742 Yy4 yy4: AC2 or AV2 high limit.
743
744
745 **Example1**: AA 00 13 88 00 00 00 00 00 00
746
747 Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
748
749
750 **Example2**: AA 02 01 00
751
752 Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
753
754
755
756 (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
757
758 MOD6 Payload : total 11 bytes payload
759
760 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
761 |(% style="background-color:#D9E2F3;color:#0070C0;width:60px" %)**Size(bytes)**|(% style="background-color:#D9E2F3;color:#0070C0;width:70px" %)**1**|(% style="background-color:#D9E2F3;color:#0070C0;width:70px" %)**1**|(% style="background-color:#D9E2F3;color:#0070C0;width:110px" %)**1**|(% style="background-color:#D9E2F3;color:#0070C0;width:50px" %)**6**|(% style="background-color:#D9E2F3;color:#0070C0;width:110px" %)**1**|(% style="background-color:#D9E2F3;color:#0070C0;width:50px" %)**1**
762 |Value|(((
763 TRI_A FLAG
764 )))|(((
765 TRI_A Status
766 )))|(((
767 TRI_DI FLAG+STA
768 )))|Reserve|Enable/Disable MOD6|(((
769 MOD(6)
770 )))
771
772 (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
773
774 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
775 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
776 |(((
777 AV1_LOW
778 )))|(((
779 AV1_HIGH
780 )))|(((
781 AV2_LOW
782 )))|(((
783 AV2_HIGH
784 )))|(((
785 AC1_LOW
786 )))|(((
787 AC1_HIGH
788 )))|(((
789 AC2_LOW
790 )))|(((
791 AC2_HIGH
792 )))
793
794 * Each bits shows if the corresponding trigger has been configured.
795
796 **Example:**
797
798 10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
799
800
801 (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
802
803 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
804 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
805 |(((
806 AV1_LOW
807 )))|(((
808 AV1_HIGH
809 )))|(((
810 AV2_LOW
811 )))|(((
812 AV2_HIGH
813 )))|(((
814 AC1_LOW
815 )))|(((
816 AC1_HIGH
817 )))|(((
818 AC2_LOW
819 )))|(((
820 AC2_HIGH
821 )))
822
823 * Each bits shows which status has been trigger on this uplink.
824
825 **Example:**
826
827 10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
828
829
830 (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
831
832 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
833 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
834 |N/A|N/A|N/A|N/A|DI2_STATUS|DI2_FLAG|DI1_STATUS|DI1_FLAG
835
836 * Each bits shows which status has been trigger on this uplink.
837
838 **Example:**
839
840 00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
841
842 00000101: Means both DI1 and DI2 trigger are enabled.
843
844
845 (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
846
847 Downlink command to poll MOD6 status:
848
849 **AB 06**
850
851 When device got this command, it will send the MOD6 payload.
852
853
854 === 3.3.7 Payload Decoder ===
855
856 (((
857
858
859 **Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
860 )))
861
862
863 == 3.4 ​Configure LT via AT or Downlink ==
864
865
866 (((
867 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
868 )))
869
870 (((
871 (((
872 There are two kinds of Commands:
873 )))
874 )))
875
876 * (% 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]]
877
878 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
879
880 === 3.4.1 Common Commands ===
881
882
883 (((
884 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]]
885 )))
886
887
888 === 3.4.2 Sensor related commands ===
889
890 ==== 3.4.2.1 Set Transmit Interval ====
891
892
893 Set device uplink interval.
894
895 * (% style="color:#037691" %)**AT Command:**
896
897 (% style="color:blue" %)**AT+TDC=N **
898
899
900 **Example: **AT+TDC=30000. Means set interval to 30 seconds
901
902
903 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
904
905 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
906
907
908
909 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
910
911
912 Set work mode.
913
914 * (% style="color:#037691" %)**AT Command:**
915
916 (% style="color:blue" %)**AT+MOD=N  **
917
918
919 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
920
921
922 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
923
924 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
925
926
927
928 ==== 3.4.2.3 Poll an uplink ====
929
930
931 * (% style="color:#037691" %)**AT Command:**
932
933 There is no AT Command to poll uplink
934
935
936 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
937
938 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
939
940
941 **Example**: 0x08FF, ask device to send an Uplink
942
943
944
945 ==== 3.4.2.4 Enable Trigger Mode ====
946
947
948 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
949
950 * (% style="color:#037691" %)**AT Command:**
951
952 (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
953
954 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
955
956 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
957
958
959 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
960
961 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
962
963
964
965 ==== 3.4.2.5 Poll trigger settings ====
966
967
968 Poll trigger settings,
969
970 * (% style="color:#037691" %)**AT Command:**
971
972 There is no AT Command for this feature.
973
974
975 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
976
977 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
978
979
980
981 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
982
983
984 Enable Disable DI1/DI2/DI2 as trigger,
985
986 * (% style="color:#037691" %)**AT Command:**
987
988 (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
989
990
991 **Example:**
992
993 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
994
995 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
996
997 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
998
999
1000
1001 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
1002
1003
1004 Set DI1 or DI3(for LT-33222-L) trigger.
1005
1006 * (% style="color:#037691" %)**AT Command:**
1007
1008 (% style="color:blue" %)**AT+TRIG1=a,b**
1009
1010 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
1011
1012 (% style="color:red" %)**b :** (%%)delay timing.
1013
1014
1015 **Example:**
1016
1017 AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
1018
1019
1020 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
1021
1022 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
1023
1024
1025
1026 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
1027
1028
1029 Set DI2 trigger.
1030
1031 * (% style="color:#037691" %)**AT Command:**
1032
1033 (% style="color:blue" %)**AT+TRIG2=a,b**
1034
1035 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
1036
1037 (% style="color:red" %)**b :** (%%)delay timing.
1038
1039
1040 **Example:**
1041
1042 AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
1043
1044
1045 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
1046
1047 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
1048
1049
1050
1051 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
1052
1053
1054 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
1055
1056 * (% style="color:#037691" %)**AT Command**
1057
1058 (% style="color:blue" %)**AT+ACLIM**
1059
1060
1061 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
1062
1063 (% 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"]]
1064
1065
1066
1067 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
1068
1069
1070 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
1071
1072 * (% style="color:#037691" %)**AT Command**
1073
1074 (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
1075
1076
1077 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
1078
1079 (% 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"]]
1080
1081
1082
1083 ==== 3.4.2.11 Trigger – Set minimum interval ====
1084
1085
1086 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
1087
1088 * (% style="color:#037691" %)**AT Command**
1089
1090 (% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
1091
1092
1093 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
1094
1095 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
1096
1097 (((
1098
1099
1100 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
1101 )))
1102
1103
1104
1105 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1106
1107
1108 * (% style="color:#037691" %)**AT Command**
1109
1110 There is no AT Command to control Digital Output
1111
1112
1113 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1114 * (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1115
1116 (((
1117 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1118 )))
1119
1120 (((
1121 01: Low,  00: High ,  11: No action
1122
1123 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1124 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO3**
1125 |02  01  00  11|Low|High|No Action
1126 |02  00  11  01|High|No Action|Low
1127 |02  11  01  00|No Action|Low|High
1128 )))
1129
1130
1131 (((
1132 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1133 )))
1134
1135 (((
1136 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1137 )))
1138
1139
1140
1141 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1142
1143
1144 * (% style="color:#037691" %)**AT Command**
1145
1146 There is no AT Command to control Digital Output
1147
1148
1149 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1150
1151 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1152
1153
1154 This is to control the digital output time of DO pin. Include four bytes:
1155
1156 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1157
1158 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1159
1160 01: DO pins will change back to original state after timeout.
1161
1162 00: DO pins will change to an inverter state after timeout 
1163
1164
1165 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1166
1167 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1168 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1169 |0x01|DO1 set to low
1170 |0x00|DO1 set to high
1171 |0x11|DO1 NO Action
1172
1173 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1174
1175 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1176 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1177 |0x01|DO2 set to low
1178 |0x00|DO2 set to high
1179 |0x11|DO2 NO Action
1180
1181 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1182
1183 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1184 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1185 |0x01|DO3 set to low
1186 |0x00|DO3 set to high
1187 |0x11|DO3 NO Action
1188
1189 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:(%%) Latching time. Unit: ms
1190
1191
1192 (% style="color:red" %)**Note: **
1193
1194 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1195
1196 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1197
1198
1199 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1200
1201
1202 **Example payload:**
1203
1204 **~1. A9 01 01 01 01 07 D0**
1205
1206 DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
1207
1208 **2. A9 01 00 01 11 07 D0**
1209
1210 DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
1211
1212 **3. A9 00 00 00 00 07 D0**
1213
1214 DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
1215
1216 **4. A9 00 11 01 00 07 D0**
1217
1218 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
1219
1220
1221
1222 ==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1223
1224
1225 * (% style="color:#037691" %)**AT Command:**
1226
1227 There is no AT Command to control Relay Output
1228
1229
1230 * (% style="color:#037691" %)**Downlink Payload (prefix 0x03):**
1231
1232 (% style="color:blue" %)**0x03 aa bb     ** (%%)~/~/ Set RO1/RO2 output
1233
1234
1235 (((
1236 If payload = 0x030100, it means set RO1 to close and RO2 to open.
1237 )))
1238
1239 (((
1240 01: Close ,  00: Open , 11: No action
1241
1242 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1243 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO2**
1244 |03  00  11|Open|No Action
1245 |03  01  11|Close|No Action
1246 |03  11  00|No Action|Open
1247 |03  11  01|No Action|Close
1248 |03  00  00|Open|Open
1249 |03  01  01|Close|Close
1250 |03  01  00|Close|Open
1251 |03  00  01|Open|Close
1252 )))
1253
1254 (((
1255
1256 )))
1257
1258 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1259
1260
1261
1262 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1263
1264
1265 * (% style="color:#037691" %)**AT Command:**
1266
1267 There is no AT Command to control Relay Output
1268
1269
1270 * (% style="color:#037691" %)**Downlink Payload (prefix 0x05):**
1271
1272 (% style="color:blue" %)**0x05 aa bb cc dd     ** (%%)~/~/ Set RO1/RO2 relay with time control
1273
1274
1275 This is to control the relay output time of relay. Include four bytes:
1276
1277 (% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
1278
1279 (% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
1280
1281 01: Relays will change back to original state after timeout.
1282
1283 00: Relays will change to an inverter state after timeout
1284
1285
1286 (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1287
1288 [[image:image-20221008095908-1.png||height="364" width="564"]]
1289
1290
1291 (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1292
1293
1294 (% style="color:red" %)**Note:**
1295
1296 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1297
1298 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1299
1300
1301 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1302
1303
1304 **Example payload:**
1305
1306 **~1. 05 01 11 07 D0**
1307
1308 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1309
1310 **2. 05 01 10 07 D0**
1311
1312 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1313
1314 **3. 05 00 01 07 D0**
1315
1316 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1317
1318 **4. 05 00 00 07 D0**
1319
1320 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1321
1322
1323
1324 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1325
1326
1327 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1328
1329 * (% style="color:#037691" %)**AT Command:**
1330
1331 (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1332
1333
1334 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1335
1336 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1337
1338
1339
1340 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1341
1342
1343 * (% style="color:#037691" %)**AT Command:**
1344
1345 (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1346
1347 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1348
1349 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1350
1351
1352 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1353
1354 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1355
1356
1357
1358 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1359
1360
1361 Clear counting for counting mode
1362
1363 * (% style="color:#037691" %)**AT Command:**
1364
1365 (% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1366
1367
1368 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1369
1370 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1371
1372
1373
1374 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1375
1376
1377 * (% style="color:#037691" %)**AT Command:**
1378
1379 (% 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)
1380
1381
1382 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1383
1384 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1385
1386 (((
1387 range: aa bb cc:0 to 16777215,  (unit:second)
1388 )))
1389
1390
1391
1392 ==== 3.4.2.20 Reset save RO DO state ====
1393
1394
1395 * (% style="color:#037691" %)**AT Command:**
1396
1397 (% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1398
1399 (% 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.
1400
1401
1402 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1403
1404 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1405
1406
1407
1408 ==== 3.4.2.21 Encrypted payload ====
1409
1410
1411 * (% style="color:#037691" %)**AT Command:**
1412
1413 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1414
1415 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1416
1417
1418
1419 ==== 3.4.2.22 Get sensor value ====
1420
1421
1422 * (% style="color:#037691" %)**AT Command:**
1423
1424 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1425
1426 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1427
1428
1429
1430 ==== 3.4.2.23 Resets the downlink packet count ====
1431
1432
1433 * (% style="color:#037691" %)**AT Command:**
1434
1435 (% 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)
1436
1437 (% 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.
1438
1439
1440
1441 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1442
1443
1444 * (% style="color:#037691" %)**AT Command:**
1445
1446 (% 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)
1447
1448 (% 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.
1449
1450
1451 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1452
1453 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1454
1455
1456
1457 ==== 3.4.2.25 Copy downlink to uplink ====
1458
1459
1460 * (% style="color:#037691" %)**AT Command**(%%)**:**
1461
1462 (% 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.
1463
1464 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.
1465
1466
1467 [[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"]]
1468
1469 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1470
1471
1472
1473 [[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"]]
1474
1475 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1476
1477
1478
1479 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1480
1481
1482 * (((
1483 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1484
1485 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1486
1487
1488 )))
1489
1490 **Example：**
1491
1492 [[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"]]
1493
1494
1495 == 3.5 Integrate with Mydevice ==
1496
1497
1498 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:
1499
1500 (((
1501 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1502 )))
1503
1504 (((
1505 (% 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:
1506
1507
1508 )))
1509
1510 [[image:image-20220719105525-1.png||height="377" width="677"]]
1511
1512
1513
1514 [[image:image-20220719110247-2.png||height="388" width="683"]]
1515
1516
1517 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1518
1519 (% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L) and add DevEUI.(% style="display:none" %)
1520
1521 Search under The things network
1522
1523 [[image:1653356838789-523.png||height="337" width="740"]]
1524
1525
1526
1527 After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1528
1529 [[image:image-20220524094909-1.png||height="335" width="729"]]
1530
1531
1532 [[image:image-20220524094909-2.png||height="337" width="729"]]
1533
1534
1535 [[image:image-20220524094909-3.png||height="338" width="727"]]
1536
1537
1538 [[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1539
1540
1541 [[image:image-20220524094909-5.png||height="341" width="734"]]
1542
1543
1544 == 3.6 Interface Detail ==
1545
1546 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1547
1548
1549 Support NPN Type sensor
1550
1551 [[image:1653356991268-289.png]]
1552
1553
1554 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1555
1556
1557 (((
1558 The DI port of LT-22222-L can support NPN or PNP output sensor.
1559 )))
1560
1561 (((
1562 (((
1563 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.
1564
1565
1566 )))
1567 )))
1568
1569 [[image:1653357170703-587.png]]
1570
1571 (((
1572 (((
1573 When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1574 )))
1575 )))
1576
1577 (((
1578
1579 )))
1580
1581 (((
1582 (% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1583 )))
1584
1585 (((
1586 This type of sensor will output a low signal GND when active.
1587 )))
1588
1589 * (((
1590 Connect sensor's output to DI1-
1591 )))
1592 * (((
1593 Connect sensor's VCC to DI1+.
1594 )))
1595
1596 (((
1597 So when sensor active, the current between NEC2501 pin1 and pin2 is：
1598 )))
1599
1600 (((
1601 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1602 )))
1603
1604 (((
1605 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.
1606 )))
1607
1608 (((
1609
1610 )))
1611
1612 (((
1613 (% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1614 )))
1615
1616 (((
1617 This type of sensor will output a high signal (example 24v) when active.
1618 )))
1619
1620 * (((
1621 Connect sensor's output to DI1+
1622 )))
1623 * (((
1624 Connect sensor's GND DI1-.
1625 )))
1626
1627 (((
1628 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1629 )))
1630
1631 (((
1632 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1633 )))
1634
1635 (((
1636 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.
1637 )))
1638
1639 (((
1640
1641 )))
1642
1643 (((
1644 (% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1645 )))
1646
1647 (((
1648 Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1649 )))
1650
1651 * (((
1652 Connect sensor's output to DI1+ with a serial 50K resistor
1653 )))
1654 * (((
1655 Connect sensor's GND DI1-.
1656 )))
1657
1658 (((
1659 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1660 )))
1661
1662 (((
1663 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1664 )))
1665
1666 (((
1667 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.
1668 )))
1669
1670
1671 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1672
1673
1674 (% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1675
1676 (% style="color:red" %)**Note: DO pins go to float when device is power off.**
1677
1678 [[image:1653357531600-905.png]]
1679
1680
1681 === 3.6.4 Analog Input Interface ===
1682
1683
1684 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:
1685
1686
1687 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1688
1689 [[image:1653357592296-182.png]]
1690
1691 Example to connect a 4~~20mA sensor
1692
1693 We take the wind speed sensor as an example for reference only.
1694
1695
1696 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1697
1698 (% style="color:red" %)**Red:  12~~24v**
1699
1700 (% style="color:#ffc000" %)**Yellow:  4~~20mA**
1701
1702 **Black:  GND**
1703
1704 **Connection diagram:**
1705
1706 [[image:1653357640609-758.png]]
1707
1708 [[image:1653357648330-671.png||height="155" width="733"]]
1709
1710
1711 Example connected to a regulated power supply to measure voltage
1712
1713 [[image:image-20230608101532-1.png||height="606" width="447"]]
1714
1715 [[image:image-20230608101608-2.jpeg||height="379" width="284"]]
1716
1717 [[image:image-20230608101722-3.png||height="102" width="1139"]]
1718
1719
1720 (% style="color:blue; font-weight:bold" %)**Specifications of the regulated power**(%%) (% style="color:blue" %)**:**
1721
1722 (% style="color:red" %)**Red:  12~~24v**
1723
1724 **Black:  GND**
1725
1726
1727 === 3.6.5 Relay Output ===
1728
1729
1730 (((
1731 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:
1732
1733 **Note**: RO pins go to Open(NO) when device is power off.
1734 )))
1735
1736 [[image:image-20220524100215-9.png]]
1737
1738
1739 [[image:image-20220524100215-10.png||height="382" width="723"]]
1740
1741
1742 == 3.7 LEDs Indicators ==
1743
1744
1745 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1746 |(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**LEDs**|(% style="background-color:#d9e2f3; color:#0070c0; width:470px" %)**Feature**
1747 |**PWR**|Always on if there is power
1748 |**SYS**|(((
1749 After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
1750 )))
1751 |**TX**|(((
1752 (((
1753 Device boot: TX blinks 5 times.
1754 )))
1755
1756 (((
1757 Successful join network: TX ON for 5 seconds.
1758 )))
1759
1760 (((
1761 Transmit a LoRa packet: TX blinks once
1762 )))
1763 )))
1764 |**RX**|RX blinks once when receive a packet.
1765 |**DO1**|
1766 |**DO2**|
1767 |**DO3**|
1768 |**DI2**|(((
1769 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1770 )))
1771 |**DI2**|(((
1772 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1773 )))
1774 |**DI2**|(((
1775 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1776 )))
1777 |**RO1**|
1778 |**RO2**|
1779
1780 = 4. Use AT Command =
1781
1782 == 4.1 Access AT Command ==
1783
1784
1785 (((
1786 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.
1787 )))
1788
1789 (((
1790
1791 )))
1792
1793 [[image:1653358238933-385.png]]
1794
1795
1796 (((
1797 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:
1798 )))
1799
1800 [[image:1653358355238-883.png]]
1801
1802
1803 (((
1804 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/]]
1805 )))
1806
1807 (((
1808 AT+<CMD>?        : Help on <CMD>
1809 )))
1810
1811 (((
1812 AT+<CMD>         : Run <CMD>
1813 )))
1814
1815 (((
1816 AT+<CMD>=<value> : Set the value
1817 )))
1818
1819 (((
1820 AT+<CMD>=?       :  Get the value
1821 )))
1822
1823 (((
1824 ATZ: Trig a reset of the MCU
1825 )))
1826
1827 (((
1828 AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1829 )))
1830
1831 (((
1832 AT+DEUI: Get or Set the Device EUI
1833 )))
1834
1835 (((
1836 AT+DADDR: Get or Set the Device Address
1837 )))
1838
1839 (((
1840 AT+APPKEY: Get or Set the Application Key
1841 )))
1842
1843 (((
1844 AT+NWKSKEY: Get or Set the Network Session Key
1845 )))
1846
1847 (((
1848 AT+APPSKEY:  Get or Set the Application Session Key
1849 )))
1850
1851 (((
1852 AT+APPEUI:  Get or Set the Application EUI
1853 )))
1854
1855 (((
1856 AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1857 )))
1858
1859 (((
1860 AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1861 )))
1862
1863 (((
1864 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1865 )))
1866
1867 (((
1868 AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1869 )))
1870
1871 (((
1872 AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1873 )))
1874
1875 (((
1876 AT+RX2FQ: Get or Set the Rx2 window frequency
1877 )))
1878
1879 (((
1880 AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1881 )))
1882
1883 (((
1884 AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1885 )))
1886
1887 (((
1888 AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1889 )))
1890
1891 (((
1892 AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1893 )))
1894
1895 (((
1896 AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1897 )))
1898
1899 (((
1900 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1901 )))
1902
1903 (((
1904 AT+NWKID: Get or Set the Network ID
1905 )))
1906
1907 (((
1908 AT+FCU: Get or Set the Frame Counter Uplink
1909 )))
1910
1911 (((
1912 AT+FCD: Get or Set the Frame Counter Downlink
1913 )))
1914
1915 (((
1916 AT+CLASS: Get or Set the Device Class
1917 )))
1918
1919 (((
1920 AT+JOIN: Join network
1921 )))
1922
1923 (((
1924 AT+NJS: Get OTAA Join Status
1925 )))
1926
1927 (((
1928 AT+SENDB: Send hexadecimal data along with the application port
1929 )))
1930
1931 (((
1932 AT+SEND: Send text data along with the application port
1933 )))
1934
1935 (((
1936 AT+RECVB: Print last received data in binary format (with hexadecimal values)
1937 )))
1938
1939 (((
1940 AT+RECV: Print last received data in raw format
1941 )))
1942
1943 (((
1944 AT+VER:  Get current image version and Frequency Band
1945 )))
1946
1947 (((
1948 AT+CFM: Get or Set the confirmation mode (0-1)
1949 )))
1950
1951 (((
1952 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1953 )))
1954
1955 (((
1956 AT+SNR: Get the SNR of the last received packet
1957 )))
1958
1959 (((
1960 AT+RSSI: Get the RSSI of the last received packet
1961 )))
1962
1963 (((
1964 AT+TDC: Get or set the application data transmission interval in ms
1965 )))
1966
1967 (((
1968 AT+PORT: Get or set the application port
1969 )))
1970
1971 (((
1972 AT+DISAT: Disable AT commands
1973 )))
1974
1975 (((
1976 AT+PWORD: Set password, max 9 digits
1977 )))
1978
1979 (((
1980 AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1981 )))
1982
1983 (((
1984 AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1985 )))
1986
1987 (((
1988 AT+CFG: Print all settings
1989 )))
1990
1991
1992 == 4.2 Common AT Command Sequence ==
1993
1994 === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1995
1996 (((
1997
1998
1999 (((
2000 (% style="color:blue" %)**If device has not joined network yet:**
2001 )))
2002 )))
2003
2004 (((
2005 (% style="background-color:#dcdcdc" %)**123456**
2006 )))
2007
2008 (((
2009 (% style="background-color:#dcdcdc" %)**AT+FDR**
2010 )))
2011
2012 (((
2013 (% style="background-color:#dcdcdc" %)**123456**
2014 )))
2015
2016 (((
2017 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
2018 )))
2019
2020 (((
2021 (% style="background-color:#dcdcdc" %)**ATZ**
2022 )))
2023
2024
2025 (((
2026 (% style="color:blue" %)**If device already joined network:**
2027 )))
2028
2029 (((
2030 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
2031 )))
2032
2033 (((
2034 (% style="background-color:#dcdcdc" %)**ATZ**
2035 )))
2036
2037
2038 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
2039
2040 (((
2041
2042
2043 (((
2044 (% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
2045 )))
2046 )))
2047
2048 (((
2049 (% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
2050 )))
2051
2052 (((
2053 (% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
2054 )))
2055
2056 (((
2057 (% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
2058 )))
2059
2060 (((
2061 (% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
2062 )))
2063
2064 (((
2065 (% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
2066 )))
2067
2068 (((
2069 (% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
2070 )))
2071
2072 (((
2073 (% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
2074 )))
2075
2076 (((
2077 (% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
2078 )))
2079
2080 (((
2081 (% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
2082 )))
2083
2084 (((
2085 (% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
2086 )))
2087
2088 (((
2089 (% 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.
2090 )))
2091
2092 (((
2093 (% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
2094
2095
2096 )))
2097
2098 (((
2099 (% style="color:red" %)**Note:**
2100 )))
2101
2102 (((
2103 **~1. Make sure the device is set to ABP mode in the IoT Server.**
2104
2105 **2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
2106
2107 **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?
2108 dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
2109
2110 **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.**
2111
2112
2113 )))
2114
2115 (((
2116 [[image:1653359097980-169.png||height="188" width="729"]]
2117 )))
2118
2119 (((
2120
2121 )))
2122
2123 === 4.2.3 Change to Class A ===
2124
2125
2126 (((
2127 (% style="color:blue" %)**If sensor JOINED:**
2128
2129 (% style="background-color:#dcdcdc" %)**AT+CLASS=A
2130 ATZ**
2131 )))
2132
2133
2134 = 5. Case Study =
2135
2136 == 5.1 Counting how many objects pass in Flow Line ==
2137
2138
2139 Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
2140
2141
2142 = 6. FAQ =
2143
2144 == 6.1 How to upgrade the image? ==
2145
2146
2147 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
2148
2149 * Support new features
2150 * For bug fix
2151 * Change LoRaWAN bands.
2152
2153 Below shows the hardware connection for how to upload an image to the LT:
2154
2155 [[image:1653359603330-121.png]]
2156
2157
2158 (((
2159 (% 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]].
2160 (% 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]].
2161 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
2162
2163
2164 (((
2165 (% style="color:blue" %)**For LT-22222-L**(%%):
2166 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.
2167 )))
2168
2169
2170 )))
2171
2172 [[image:image-20220524103407-12.png]]
2173
2174
2175 [[image:image-20220524103429-13.png]]
2176
2177
2178 [[image:image-20220524104033-15.png]]
2179
2180
2181 (% 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:
2182
2183
2184 [[image:1653360054704-518.png||height="186" width="745"]]
2185
2186
2187 (((
2188 (((
2189 == 6.2 How to change the LoRa Frequency Bands/Region? ==
2190
2191
2192 )))
2193 )))
2194
2195 (((
2196 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2197 )))
2198
2199 (((
2200
2201
2202 == 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2203
2204
2205 )))
2206
2207 (((
2208 (((
2209 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2210 )))
2211 )))
2212
2213 (((
2214 (((
2215 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2216
2217
2218 )))
2219 )))
2220
2221 (((
2222 (% 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.
2223
2224
2225 )))
2226
2227 (((
2228 [[image:1653360231087-571.png||height="401" width="727"]]
2229
2230
2231 )))
2232
2233 (((
2234 (% 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.**
2235 )))
2236
2237
2238
2239 (((
2240 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2241
2242
2243 )))
2244
2245 (((
2246 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2247 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2248 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2249 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2250 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2251 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2252 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2253 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2254 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2255 )))
2256
2257
2258 (((
2259 As shown in below:
2260 )))
2261
2262 [[image:1653360498588-932.png||height="485" width="726"]]
2263
2264
2265 == 6.4 How to change the uplink interval？ ==
2266
2267
2268 Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/]]
2269
2270
2271 == 6.5 Can I see counting event in Serial? ==
2272
2273
2274 (((
2275 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.
2276
2277
2278 == 6.6 Can i use point to point communication for LT-22222-L? ==
2279
2280
2281 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]].
2282
2283
2284 )))
2285
2286 (((
2287 == 6.7 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2288
2289
2290 If the device is not shut down, but directly powered off.
2291
2292 It will default that this is a power-off state.
2293
2294 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2295
2296 After restart, the status before power failure will be read from flash.
2297
2298
2299 == 6.8 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2300
2301
2302 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2303
2304
2305 [[image:image-20221006170630-1.png||height="610" width="945"]]
2306
2307
2308 == 6.9 Can LT22222-L save RO state? ==
2309
2310
2311 Firmware version needs to be no less than 1.6.0.
2312
2313
2314 = 7. Trouble Shooting =
2315 )))
2316
2317 (((
2318 (((
2319 == 7.1 Downlink doesn't work, how to solve it? ==
2320
2321
2322 )))
2323 )))
2324
2325 (((
2326 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2327 )))
2328
2329 (((
2330
2331
2332 == 7.2 Have trouble to upload image. ==
2333
2334
2335 )))
2336
2337 (((
2338 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2339 )))
2340
2341 (((
2342
2343
2344 == 7.3 Why I can't join TTN in US915 /AU915 bands? ==
2345
2346
2347 )))
2348
2349 (((
2350 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2351 )))
2352
2353
2354 = 8. Order Info =
2355
2356
2357 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2358
2359 (% style="color:#4f81bd" %)**XXX:**
2360
2361 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2362 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2363 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2364 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2365 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2366 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2367 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2368 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2369 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2370
2371 = 9. Packing Info =
2372
2373
2374 **Package Includes**:
2375
2376 * LT-22222-L I/O Controller x 1
2377 * Stick Antenna for LoRa RF part x 1
2378 * Bracket for controller x1
2379 * Program cable x 1
2380
2381 **Dimension and weight**:
2382
2383 * Device Size: 13.5 x 7 x 3 cm
2384 * Device Weight: 105g
2385 * Package Size / pcs : 14.5 x 8 x 5 cm
2386 * Weight / pcs : 170g
2387
2388 = 10. Support =
2389
2390
2391 * (((
2392 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.
2393 )))
2394 * (((
2395 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.cc>>mailto:Support@dragino.cc]]
2396
2397
2398
2399 )))
2400
2401 = 11. Reference​​​​​ =
2402
2403
2404 * 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]]
2405 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2406 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]