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Version 122.7 by Xiaoling on 2023/06/08 17:16
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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 |**Size(bytes)**|**1**|**1**|**1**|**6**|**1**|**1**
762 |Value|(((
763 TRI_A
764 FLAG
765 )))|(((
766 TRI_A
767 Status
768 )))|(((
769 TRI_DI
770 FLAG+STA
771 )))|Reserve|Enable/Disable MOD6|(((
772 MOD
773 (6)
774 )))
775
776 (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
777
778 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
779 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
780 |(((
781 AV1_
782 LOW
783 )))|(((
784 AV1_
785 HIGH
786 )))|(((
787 AV2_
788 LOW
789 )))|(((
790 AV2_
791 HIGH
792 )))|(((
793 AC1_
794 LOW
795 )))|(((
796 AC1_
797 HIGH
798 )))|(((
799 AC2_
800 LOW
801 )))|(((
802 AC2_
803 HIGH
804 )))
805
806 * Each bits shows if the corresponding trigger has been configured.
807
808 **Example:**
809
810 10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
811
812
813 (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
814
815 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
816 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
817 |(((
818 AV1_
819 LOW
820 )))|(((
821 AV1_
822 HIGH
823 )))|(((
824 AV2_
825 LOW
826 )))|(((
827 AV2_
828 HIGH
829 )))|(((
830 AC1_
831 LOW
832 )))|(((
833 AC1_
834 HIGH
835 )))|(((
836 AC2_
837 LOW
838 )))|(((
839 AC2_
840 HIGH
841 )))
842
843 * Each bits shows which status has been trigger on this uplink.
844
845 **Example:**
846
847 10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
848
849
850 (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
851
852 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
853 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
854 |N/A|N/A|N/A|N/A|DI2_STATUS|DI2_FLAG|DI1_STATUS|DI1_FLAG
855
856 * Each bits shows which status has been trigger on this uplink.
857
858 **Example:**
859
860 00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
861
862 00000101: Means both DI1 and DI2 trigger are enabled.
863
864
865 (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
866
867 Downlink command to poll MOD6 status:
868
869 **AB 06**
870
871 When device got this command, it will send the MOD6 payload.
872
873
874 === 3.3.7 Payload Decoder ===
875
876 (((
877
878
879 **Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
880 )))
881
882
883 == 3.4 ​Configure LT via AT or Downlink ==
884
885
886 (((
887 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
888 )))
889
890 (((
891 (((
892 There are two kinds of Commands:
893 )))
894 )))
895
896 * (% 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]]
897
898 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
899
900 === 3.4.1 Common Commands ===
901
902
903 (((
904 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]]
905 )))
906
907
908 === 3.4.2 Sensor related commands ===
909
910 ==== 3.4.2.1 Set Transmit Interval ====
911
912
913 Set device uplink interval.
914
915 * (% style="color:#037691" %)**AT Command:**
916
917 (% style="color:blue" %)**AT+TDC=N **
918
919
920 **Example: **AT+TDC=30000. Means set interval to 30 seconds
921
922
923 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
924
925 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
926
927
928
929 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
930
931
932 Set work mode.
933
934 * (% style="color:#037691" %)**AT Command:**
935
936 (% style="color:blue" %)**AT+MOD=N  **
937
938
939 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
940
941
942 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
943
944 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
945
946
947
948 ==== 3.4.2.3 Poll an uplink ====
949
950
951 * (% style="color:#037691" %)**AT Command:**
952
953 There is no AT Command to poll uplink
954
955
956 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
957
958 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
959
960
961 **Example**: 0x08FF, ask device to send an Uplink
962
963
964
965 ==== 3.4.2.4 Enable Trigger Mode ====
966
967
968 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
969
970 * (% style="color:#037691" %)**AT Command:**
971
972 (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
973
974 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
975
976 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
977
978
979 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
980
981 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
982
983
984
985 ==== 3.4.2.5 Poll trigger settings ====
986
987
988 Poll trigger settings,
989
990 * (% style="color:#037691" %)**AT Command:**
991
992 There is no AT Command for this feature.
993
994
995 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
996
997 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
998
999
1000
1001 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
1002
1003
1004 Enable Disable DI1/DI2/DI2 as trigger,
1005
1006 * (% style="color:#037691" %)**AT Command:**
1007
1008 (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
1009
1010
1011 **Example:**
1012
1013 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
1014
1015 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
1016
1017 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
1018
1019
1020
1021 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
1022
1023
1024 Set DI1 or DI3(for LT-33222-L) trigger.
1025
1026 * (% style="color:#037691" %)**AT Command:**
1027
1028 (% style="color:blue" %)**AT+TRIG1=a,b**
1029
1030 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
1031
1032 (% style="color:red" %)**b :** (%%)delay timing.
1033
1034
1035 **Example:**
1036
1037 AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
1038
1039
1040 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
1041
1042 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
1043
1044
1045
1046 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
1047
1048
1049 Set DI2 trigger.
1050
1051 * (% style="color:#037691" %)**AT Command:**
1052
1053 (% style="color:blue" %)**AT+TRIG2=a,b**
1054
1055 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
1056
1057 (% style="color:red" %)**b :** (%%)delay timing.
1058
1059
1060 **Example:**
1061
1062 AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
1063
1064
1065 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
1066
1067 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
1068
1069
1070
1071 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
1072
1073
1074 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
1075
1076 * (% style="color:#037691" %)**AT Command**
1077
1078 (% style="color:blue" %)**AT+ACLIM**
1079
1080
1081 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
1082
1083 (% 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"]]
1084
1085
1086
1087 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
1088
1089
1090 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
1091
1092 * (% style="color:#037691" %)**AT Command**
1093
1094 (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
1095
1096
1097 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
1098
1099 (% 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"]]
1100
1101
1102
1103 ==== 3.4.2.11 Trigger – Set minimum interval ====
1104
1105
1106 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
1107
1108 * (% style="color:#037691" %)**AT Command**
1109
1110 (% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
1111
1112
1113 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
1114
1115 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
1116
1117 (((
1118
1119
1120 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
1121 )))
1122
1123
1124
1125 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1126
1127
1128 * (% style="color:#037691" %)**AT Command**
1129
1130 There is no AT Command to control Digital Output
1131
1132
1133 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1134 * (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1135
1136 (((
1137 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1138 )))
1139
1140 (((
1141 01: Low,  00: High ,  11: No action
1142
1143 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1144 |(% 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**
1145 |02  01  00  11|Low|High|No Action
1146 |02  00  11  01|High|No Action|Low
1147 |02  11  01  00|No Action|Low|High
1148 )))
1149
1150
1151 (((
1152 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1153 )))
1154
1155 (((
1156 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1157 )))
1158
1159
1160
1161 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1162
1163
1164 * (% style="color:#037691" %)**AT Command**
1165
1166 There is no AT Command to control Digital Output
1167
1168
1169 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1170
1171 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1172
1173
1174 This is to control the digital output time of DO pin. Include four bytes:
1175
1176 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1177
1178 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1179
1180 01: DO pins will change back to original state after timeout.
1181
1182 00: DO pins will change to an inverter state after timeout 
1183
1184
1185 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1186
1187 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1188 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1189 |0x01|DO1 set to low
1190 |0x00|DO1 set to high
1191 |0x11|DO1 NO Action
1192
1193 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1194
1195 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1196 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1197 |0x01|DO2 set to low
1198 |0x00|DO2 set to high
1199 |0x11|DO2 NO Action
1200
1201 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1202
1203 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1204 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1205 |0x01|DO3 set to low
1206 |0x00|DO3 set to high
1207 |0x11|DO3 NO Action
1208
1209 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:(%%) Latching time. Unit: ms
1210
1211
1212 (% style="color:red" %)**Note: **
1213
1214 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1215
1216 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1217
1218
1219 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1220
1221
1222 **Example payload:**
1223
1224 **~1. A9 01 01 01 01 07 D0**
1225
1226 DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
1227
1228 **2. A9 01 00 01 11 07 D0**
1229
1230 DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
1231
1232 **3. A9 00 00 00 00 07 D0**
1233
1234 DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
1235
1236 **4. A9 00 11 01 00 07 D0**
1237
1238 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
1239
1240
1241
1242 ==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1243
1244
1245 * (% style="color:#037691" %)**AT Command:**
1246
1247 There is no AT Command to control Relay Output
1248
1249
1250 * (% style="color:#037691" %)**Downlink Payload (prefix 0x03):**
1251
1252 (% style="color:blue" %)**0x03 aa bb     ** (%%)~/~/ Set RO1/RO2 output
1253
1254
1255 (((
1256 If payload = 0x030100, it means set RO1 to close and RO2 to open.
1257 )))
1258
1259 (((
1260 01: Close ,  00: Open , 11: No action
1261
1262 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1263 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO2**
1264 |03  00  11|Open|No Action
1265 |03  01  11|Close|No Action
1266 |03  11  00|No Action|Open
1267 |03  11  01|No Action|Close
1268 |03  00  00|Open|Open
1269 |03  01  01|Close|Close
1270 |03  01  00|Close|Open
1271 |03  00  01|Open|Close
1272 )))
1273
1274 (((
1275
1276 )))
1277
1278 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1279
1280
1281
1282 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1283
1284
1285 * (% style="color:#037691" %)**AT Command:**
1286
1287 There is no AT Command to control Relay Output
1288
1289
1290 * (% style="color:#037691" %)**Downlink Payload (prefix 0x05):**
1291
1292 (% style="color:blue" %)**0x05 aa bb cc dd     ** (%%)~/~/ Set RO1/RO2 relay with time control
1293
1294
1295 This is to control the relay output time of relay. Include four bytes:
1296
1297 (% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
1298
1299 (% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
1300
1301 01: Relays will change back to original state after timeout.
1302
1303 00: Relays will change to an inverter state after timeout
1304
1305
1306 (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1307
1308 [[image:image-20221008095908-1.png||height="364" width="564"]]
1309
1310
1311 (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1312
1313
1314 (% style="color:red" %)**Note:**
1315
1316 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1317
1318 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1319
1320
1321 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1322
1323
1324 **Example payload:**
1325
1326 **~1. 05 01 11 07 D0**
1327
1328 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1329
1330 **2. 05 01 10 07 D0**
1331
1332 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1333
1334 **3. 05 00 01 07 D0**
1335
1336 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1337
1338 **4. 05 00 00 07 D0**
1339
1340 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1341
1342
1343
1344 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1345
1346
1347 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1348
1349 * (% style="color:#037691" %)**AT Command:**
1350
1351 (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1352
1353
1354 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1355
1356 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1357
1358
1359
1360 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1361
1362
1363 * (% style="color:#037691" %)**AT Command:**
1364
1365 (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1366
1367 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1368
1369 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1370
1371
1372 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1373
1374 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1375
1376
1377
1378 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1379
1380
1381 Clear counting for counting mode
1382
1383 * (% style="color:#037691" %)**AT Command:**
1384
1385 (% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1386
1387
1388 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1389
1390 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1391
1392
1393
1394 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1395
1396
1397 * (% style="color:#037691" %)**AT Command:**
1398
1399 (% 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)
1400
1401
1402 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1403
1404 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1405
1406 (((
1407 range: aa bb cc:0 to 16777215,  (unit:second)
1408 )))
1409
1410
1411
1412 ==== 3.4.2.20 Reset save RO DO state ====
1413
1414
1415 * (% style="color:#037691" %)**AT Command:**
1416
1417 (% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1418
1419 (% 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.
1420
1421
1422 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1423
1424 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1425
1426
1427
1428 ==== 3.4.2.21 Encrypted payload ====
1429
1430
1431 * (% style="color:#037691" %)**AT Command:**
1432
1433 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1434
1435 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1436
1437
1438
1439 ==== 3.4.2.22 Get sensor value ====
1440
1441
1442 * (% style="color:#037691" %)**AT Command:**
1443
1444 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1445
1446 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1447
1448
1449
1450 ==== 3.4.2.23 Resets the downlink packet count ====
1451
1452
1453 * (% style="color:#037691" %)**AT Command:**
1454
1455 (% 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)
1456
1457 (% 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.
1458
1459
1460
1461 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1462
1463
1464 * (% style="color:#037691" %)**AT Command:**
1465
1466 (% 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)
1467
1468 (% 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.
1469
1470
1471 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1472
1473 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1474
1475
1476
1477 ==== 3.4.2.25 Copy downlink to uplink ====
1478
1479
1480 * (% style="color:#037691" %)**AT Command**(%%)**:**
1481
1482 (% 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.
1483
1484 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.
1485
1486
1487 [[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"]]
1488
1489 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1490
1491
1492
1493 [[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"]]
1494
1495 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1496
1497
1498
1499 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1500
1501
1502 * (((
1503 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1504
1505 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1506
1507
1508 )))
1509
1510 **Example：**
1511
1512 [[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"]]
1513
1514
1515 == 3.5 Integrate with Mydevice ==
1516
1517
1518 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:
1519
1520 (((
1521 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1522 )))
1523
1524 (((
1525 (% 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:
1526
1527
1528 )))
1529
1530 [[image:image-20220719105525-1.png||height="377" width="677"]]
1531
1532
1533
1534 [[image:image-20220719110247-2.png||height="388" width="683"]]
1535
1536
1537 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1538
1539 (% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L) and add DevEUI.(% style="display:none" %)
1540
1541 Search under The things network
1542
1543 [[image:1653356838789-523.png||height="337" width="740"]]
1544
1545
1546
1547 After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1548
1549 [[image:image-20220524094909-1.png||height="335" width="729"]]
1550
1551
1552 [[image:image-20220524094909-2.png||height="337" width="729"]]
1553
1554
1555 [[image:image-20220524094909-3.png||height="338" width="727"]]
1556
1557
1558 [[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1559
1560
1561 [[image:image-20220524094909-5.png||height="341" width="734"]]
1562
1563
1564 == 3.6 Interface Detail ==
1565
1566 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1567
1568
1569 Support NPN Type sensor
1570
1571 [[image:1653356991268-289.png]]
1572
1573
1574 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1575
1576
1577 (((
1578 The DI port of LT-22222-L can support NPN or PNP output sensor.
1579 )))
1580
1581 (((
1582 (((
1583 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.
1584
1585
1586 )))
1587 )))
1588
1589 [[image:1653357170703-587.png]]
1590
1591 (((
1592 (((
1593 When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1594 )))
1595 )))
1596
1597 (((
1598
1599 )))
1600
1601 (((
1602 (% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1603 )))
1604
1605 (((
1606 This type of sensor will output a low signal GND when active.
1607 )))
1608
1609 * (((
1610 Connect sensor's output to DI1-
1611 )))
1612 * (((
1613 Connect sensor's VCC to DI1+.
1614 )))
1615
1616 (((
1617 So when sensor active, the current between NEC2501 pin1 and pin2 is：
1618 )))
1619
1620 (((
1621 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1622 )))
1623
1624 (((
1625 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.
1626 )))
1627
1628 (((
1629
1630 )))
1631
1632 (((
1633 (% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1634 )))
1635
1636 (((
1637 This type of sensor will output a high signal (example 24v) when active.
1638 )))
1639
1640 * (((
1641 Connect sensor's output to DI1+
1642 )))
1643 * (((
1644 Connect sensor's GND DI1-.
1645 )))
1646
1647 (((
1648 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1649 )))
1650
1651 (((
1652 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1653 )))
1654
1655 (((
1656 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.
1657 )))
1658
1659 (((
1660
1661 )))
1662
1663 (((
1664 (% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1665 )))
1666
1667 (((
1668 Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1669 )))
1670
1671 * (((
1672 Connect sensor's output to DI1+ with a serial 50K resistor
1673 )))
1674 * (((
1675 Connect sensor's GND DI1-.
1676 )))
1677
1678 (((
1679 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1680 )))
1681
1682 (((
1683 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1684 )))
1685
1686 (((
1687 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.
1688 )))
1689
1690
1691 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1692
1693
1694 (% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1695
1696 (% style="color:red" %)**Note: DO pins go to float when device is power off.**
1697
1698 [[image:1653357531600-905.png]]
1699
1700
1701 === 3.6.4 Analog Input Interface ===
1702
1703
1704 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:
1705
1706
1707 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1708
1709 [[image:1653357592296-182.png]]
1710
1711 Example to connect a 4~~20mA sensor
1712
1713 We take the wind speed sensor as an example for reference only.
1714
1715
1716 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1717
1718 (% style="color:red" %)**Red:  12~~24v**
1719
1720 (% style="color:#ffc000" %)**Yellow:  4~~20mA**
1721
1722 **Black:  GND**
1723
1724 **Connection diagram:**
1725
1726 [[image:1653357640609-758.png]]
1727
1728 [[image:1653357648330-671.png||height="155" width="733"]]
1729
1730
1731 Example connected to a regulated power supply to measure voltage
1732
1733 [[image:image-20230608101532-1.png||height="606" width="447"]]
1734
1735 [[image:image-20230608101608-2.jpeg||height="379" width="284"]]
1736
1737 [[image:image-20230608101722-3.png||height="102" width="1139"]]
1738
1739
1740 (% style="color:blue; font-weight:bold" %)**Specifications of the regulated power**(%%) (% style="color:blue" %)**:**
1741
1742 (% style="color:red" %)**Red:  12~~24v**
1743
1744 **Black:  GND**
1745
1746
1747 === 3.6.5 Relay Output ===
1748
1749
1750 (((
1751 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:
1752
1753 **Note**: RO pins go to Open(NO) when device is power off.
1754 )))
1755
1756 [[image:image-20220524100215-9.png]]
1757
1758
1759 [[image:image-20220524100215-10.png||height="382" width="723"]]
1760
1761
1762 == 3.7 LEDs Indicators ==
1763
1764
1765 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1766 |(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**LEDs**|(% style="background-color:#d9e2f3; color:#0070c0; width:470px" %)**Feature**
1767 |**PWR**|Always on if there is power
1768 |**SYS**|(((
1769 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.
1770 )))
1771 |**TX**|(((
1772 (((
1773 Device boot: TX blinks 5 times.
1774 )))
1775
1776 (((
1777 Successful join network: TX ON for 5 seconds.
1778 )))
1779
1780 (((
1781 Transmit a LoRa packet: TX blinks once
1782 )))
1783 )))
1784 |**RX**|RX blinks once when receive a packet.
1785 |**DO1**|
1786 |**DO2**|
1787 |**DO3**|
1788 |**DI2**|(((
1789 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1790 )))
1791 |**DI2**|(((
1792 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1793 )))
1794 |**DI2**|(((
1795 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1796 )))
1797 |**RO1**|
1798 |**RO2**|
1799
1800 = 4. Use AT Command =
1801
1802 == 4.1 Access AT Command ==
1803
1804
1805 (((
1806 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.
1807 )))
1808
1809 (((
1810
1811 )))
1812
1813 [[image:1653358238933-385.png]]
1814
1815
1816 (((
1817 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:
1818 )))
1819
1820 [[image:1653358355238-883.png]]
1821
1822
1823 (((
1824 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/]]
1825 )))
1826
1827 (((
1828 AT+<CMD>?        : Help on <CMD>
1829 )))
1830
1831 (((
1832 AT+<CMD>         : Run <CMD>
1833 )))
1834
1835 (((
1836 AT+<CMD>=<value> : Set the value
1837 )))
1838
1839 (((
1840 AT+<CMD>=?       :  Get the value
1841 )))
1842
1843 (((
1844 ATZ: Trig a reset of the MCU
1845 )))
1846
1847 (((
1848 AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1849 )))
1850
1851 (((
1852 AT+DEUI: Get or Set the Device EUI
1853 )))
1854
1855 (((
1856 AT+DADDR: Get or Set the Device Address
1857 )))
1858
1859 (((
1860 AT+APPKEY: Get or Set the Application Key
1861 )))
1862
1863 (((
1864 AT+NWKSKEY: Get or Set the Network Session Key
1865 )))
1866
1867 (((
1868 AT+APPSKEY:  Get or Set the Application Session Key
1869 )))
1870
1871 (((
1872 AT+APPEUI:  Get or Set the Application EUI
1873 )))
1874
1875 (((
1876 AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1877 )))
1878
1879 (((
1880 AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1881 )))
1882
1883 (((
1884 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1885 )))
1886
1887 (((
1888 AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1889 )))
1890
1891 (((
1892 AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1893 )))
1894
1895 (((
1896 AT+RX2FQ: Get or Set the Rx2 window frequency
1897 )))
1898
1899 (((
1900 AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1901 )))
1902
1903 (((
1904 AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1905 )))
1906
1907 (((
1908 AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1909 )))
1910
1911 (((
1912 AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1913 )))
1914
1915 (((
1916 AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1917 )))
1918
1919 (((
1920 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1921 )))
1922
1923 (((
1924 AT+NWKID: Get or Set the Network ID
1925 )))
1926
1927 (((
1928 AT+FCU: Get or Set the Frame Counter Uplink
1929 )))
1930
1931 (((
1932 AT+FCD: Get or Set the Frame Counter Downlink
1933 )))
1934
1935 (((
1936 AT+CLASS: Get or Set the Device Class
1937 )))
1938
1939 (((
1940 AT+JOIN: Join network
1941 )))
1942
1943 (((
1944 AT+NJS: Get OTAA Join Status
1945 )))
1946
1947 (((
1948 AT+SENDB: Send hexadecimal data along with the application port
1949 )))
1950
1951 (((
1952 AT+SEND: Send text data along with the application port
1953 )))
1954
1955 (((
1956 AT+RECVB: Print last received data in binary format (with hexadecimal values)
1957 )))
1958
1959 (((
1960 AT+RECV: Print last received data in raw format
1961 )))
1962
1963 (((
1964 AT+VER:  Get current image version and Frequency Band
1965 )))
1966
1967 (((
1968 AT+CFM: Get or Set the confirmation mode (0-1)
1969 )))
1970
1971 (((
1972 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1973 )))
1974
1975 (((
1976 AT+SNR: Get the SNR of the last received packet
1977 )))
1978
1979 (((
1980 AT+RSSI: Get the RSSI of the last received packet
1981 )))
1982
1983 (((
1984 AT+TDC: Get or set the application data transmission interval in ms
1985 )))
1986
1987 (((
1988 AT+PORT: Get or set the application port
1989 )))
1990
1991 (((
1992 AT+DISAT: Disable AT commands
1993 )))
1994
1995 (((
1996 AT+PWORD: Set password, max 9 digits
1997 )))
1998
1999 (((
2000 AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
2001 )))
2002
2003 (((
2004 AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
2005 )))
2006
2007 (((
2008 AT+CFG: Print all settings
2009 )))
2010
2011
2012 == 4.2 Common AT Command Sequence ==
2013
2014 === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
2015
2016 (((
2017
2018
2019 (((
2020 (% style="color:blue" %)**If device has not joined network yet:**
2021 )))
2022 )))
2023
2024 (((
2025 (% style="background-color:#dcdcdc" %)**123456**
2026 )))
2027
2028 (((
2029 (% style="background-color:#dcdcdc" %)**AT+FDR**
2030 )))
2031
2032 (((
2033 (% style="background-color:#dcdcdc" %)**123456**
2034 )))
2035
2036 (((
2037 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
2038 )))
2039
2040 (((
2041 (% style="background-color:#dcdcdc" %)**ATZ**
2042 )))
2043
2044
2045 (((
2046 (% style="color:blue" %)**If device already joined network:**
2047 )))
2048
2049 (((
2050 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
2051 )))
2052
2053 (((
2054 (% style="background-color:#dcdcdc" %)**ATZ**
2055 )))
2056
2057
2058 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
2059
2060 (((
2061
2062
2063 (((
2064 (% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
2065 )))
2066 )))
2067
2068 (((
2069 (% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
2070 )))
2071
2072 (((
2073 (% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
2074 )))
2075
2076 (((
2077 (% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
2078 )))
2079
2080 (((
2081 (% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
2082 )))
2083
2084 (((
2085 (% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
2086 )))
2087
2088 (((
2089 (% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
2090 )))
2091
2092 (((
2093 (% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
2094 )))
2095
2096 (((
2097 (% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
2098 )))
2099
2100 (((
2101 (% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
2102 )))
2103
2104 (((
2105 (% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
2106 )))
2107
2108 (((
2109 (% 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.
2110 )))
2111
2112 (((
2113 (% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
2114
2115
2116 )))
2117
2118 (((
2119 (% style="color:red" %)**Note:**
2120 )))
2121
2122 (((
2123 **~1. Make sure the device is set to ABP mode in the IoT Server.**
2124
2125 **2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
2126
2127 **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?
2128 dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
2129
2130 **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.**
2131
2132
2133 )))
2134
2135 (((
2136 [[image:1653359097980-169.png||height="188" width="729"]]
2137 )))
2138
2139 (((
2140
2141 )))
2142
2143 === 4.2.3 Change to Class A ===
2144
2145
2146 (((
2147 (% style="color:blue" %)**If sensor JOINED:**
2148
2149 (% style="background-color:#dcdcdc" %)**AT+CLASS=A
2150 ATZ**
2151 )))
2152
2153
2154 = 5. Case Study =
2155
2156 == 5.1 Counting how many objects pass in Flow Line ==
2157
2158
2159 Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
2160
2161
2162 = 6. FAQ =
2163
2164 == 6.1 How to upgrade the image? ==
2165
2166
2167 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
2168
2169 * Support new features
2170 * For bug fix
2171 * Change LoRaWAN bands.
2172
2173 Below shows the hardware connection for how to upload an image to the LT:
2174
2175 [[image:1653359603330-121.png]]
2176
2177
2178 (((
2179 (% 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]].
2180 (% 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]].
2181 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
2182
2183
2184 (((
2185 (% style="color:blue" %)**For LT-22222-L**(%%):
2186 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.
2187 )))
2188
2189
2190 )))
2191
2192 [[image:image-20220524103407-12.png]]
2193
2194
2195 [[image:image-20220524103429-13.png]]
2196
2197
2198 [[image:image-20220524104033-15.png]]
2199
2200
2201 (% 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:
2202
2203
2204 [[image:1653360054704-518.png||height="186" width="745"]]
2205
2206
2207 (((
2208 (((
2209 == 6.2 How to change the LoRa Frequency Bands/Region? ==
2210
2211
2212 )))
2213 )))
2214
2215 (((
2216 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2217 )))
2218
2219 (((
2220
2221
2222 == 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2223
2224
2225 )))
2226
2227 (((
2228 (((
2229 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2230 )))
2231 )))
2232
2233 (((
2234 (((
2235 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2236
2237
2238 )))
2239 )))
2240
2241 (((
2242 (% 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.
2243
2244
2245 )))
2246
2247 (((
2248 [[image:1653360231087-571.png||height="401" width="727"]]
2249
2250
2251 )))
2252
2253 (((
2254 (% 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.**
2255 )))
2256
2257
2258
2259 (((
2260 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2261
2262
2263 )))
2264
2265 (((
2266 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2267 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2268 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2269 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2270 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2271 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2272 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2273 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2274 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2275 )))
2276
2277
2278 (((
2279 As shown in below:
2280 )))
2281
2282 [[image:1653360498588-932.png||height="485" width="726"]]
2283
2284
2285 == 6.4 How to change the uplink interval？ ==
2286
2287
2288 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/]]
2289
2290
2291 == 6.5 Can I see counting event in Serial? ==
2292
2293
2294 (((
2295 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.
2296
2297
2298 == 6.6 Can i use point to point communication for LT-22222-L? ==
2299
2300
2301 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]].
2302
2303
2304 )))
2305
2306 (((
2307 == 6.7 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2308
2309
2310 If the device is not shut down, but directly powered off.
2311
2312 It will default that this is a power-off state.
2313
2314 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2315
2316 After restart, the status before power failure will be read from flash.
2317
2318
2319 == 6.8 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2320
2321
2322 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2323
2324
2325 [[image:image-20221006170630-1.png||height="610" width="945"]]
2326
2327
2328 == 6.9 Can LT22222-L save RO state? ==
2329
2330
2331 Firmware version needs to be no less than 1.6.0.
2332
2333
2334 = 7. Trouble Shooting =
2335 )))
2336
2337 (((
2338 (((
2339 == 7.1 Downlink doesn't work, how to solve it? ==
2340
2341
2342 )))
2343 )))
2344
2345 (((
2346 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2347 )))
2348
2349 (((
2350
2351
2352 == 7.2 Have trouble to upload image. ==
2353
2354
2355 )))
2356
2357 (((
2358 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2359 )))
2360
2361 (((
2362
2363
2364 == 7.3 Why I can't join TTN in US915 /AU915 bands? ==
2365
2366
2367 )))
2368
2369 (((
2370 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2371 )))
2372
2373
2374 = 8. Order Info =
2375
2376
2377 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2378
2379 (% style="color:#4f81bd" %)**XXX:**
2380
2381 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2382 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2383 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2384 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2385 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2386 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2387 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2388 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2389 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2390
2391 = 9. Packing Info =
2392
2393
2394 **Package Includes**:
2395
2396 * LT-22222-L I/O Controller x 1
2397 * Stick Antenna for LoRa RF part x 1
2398 * Bracket for controller x1
2399 * Program cable x 1
2400
2401 **Dimension and weight**:
2402
2403 * Device Size: 13.5 x 7 x 3 cm
2404 * Device Weight: 105g
2405 * Package Size / pcs : 14.5 x 8 x 5 cm
2406 * Weight / pcs : 170g
2407
2408 = 10. Support =
2409
2410
2411 * (((
2412 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.
2413 )))
2414 * (((
2415 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]]
2416
2417
2418
2419 )))
2420
2421 = 11. Reference​​​​​ =
2422
2423
2424 * 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]]
2425 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2426 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]