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Version 122.6 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
620 voltage
621 )))|(((
622 AVI2
623 voltage
624 )))|(((
625 ACI1
626 Current
627 )))|COUNT1|DIDORO*|(((
628 Reserve
629 )))|MOD
630
631 (((
632
633
634 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
635
636 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
637 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
638 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
639 )))
640
641 * RO is for relay. ROx=1 : close，ROx=0 always open.
642 * FIRST: Indicate this is the first packet after join network.
643 * (((
644 DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
645 )))
646
647 (((
648 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
649 )))
650
651 (((
652
653
654 **To use this mode, please run:**
655 )))
656
657 (% class="box infomessage" %)
658 (((
659 (((
660 (((
661 **AT+MOD=5**
662 )))
663
664 (((
665 **ATZ**
666 )))
667 )))
668 )))
669
670 (((
671 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
672 )))
673
674
675 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
676
677
678 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
679
680 For example, if user has configured below commands:
681
682 * **AT+MOD=1 ** **~-~->**  The normal working mode
683 * **AT+ADDMOD6=1**   **~-~->**  Enable trigger
684
685 LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
686
687 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
688 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.**
689
690 (% style="color:#037691" %)**AT Command to set Trigger Condition**:
691
692
693 (% style="color:#4f81bd" %)**Trigger base on voltage**:
694
695 Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
696
697
698 **Example:**
699
700 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)
701
702 AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
703
704
705
706 (% style="color:#4f81bd" %)**Trigger base on current**:
707
708 Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
709
710
711 **Example:**
712
713 AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
714
715
716
717 (% style="color:#4f81bd" %)**Trigger base on DI status**:
718
719 DI status trigger Flag.
720
721 Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
722
723
724 **Example:**
725
726 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
727
728
729 (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
730
731 Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
732
733 Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
734
735 AA: Code for this downlink Command:
736
737 xx: 0: Limit for AV1 and AV2;  1: limit for AC1 and AC2 ; 2 DI1, DI2 trigger enable/disable
738
739 yy1 yy1: AC1 or AV1 low limit or DI1/DI2 trigger status.
740
741 yy2 yy2: AC1 or AV1 high limit.
742
743 yy3 yy3: AC2 or AV2 low limit.
744
745 Yy4 yy4: AC2 or AV2 high limit.
746
747
748 **Example1**: AA 00 13 88 00 00 00 00 00 00
749
750 Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
751
752
753 **Example2**: AA 02 01 00
754
755 Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
756
757
758
759 (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
760
761 MOD6 Payload : total 11 bytes payload
762
763 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
764 |**Size(bytes)**|**1**|**1**|**1**|**6**|**1**|**1**
765 |Value|(((
766 TRI_A
767 FLAG
768 )))|(((
769 TRI_A
770 Status
771 )))|(((
772 TRI_DI
773 FLAG+STA
774 )))|Reserve|Enable/Disable MOD6|(((
775 MOD
776 (6)
777 )))
778
779 (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
780
781 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
782 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
783 |(((
784 AV1_
785 LOW
786 )))|(((
787 AV1_
788 HIGH
789 )))|(((
790 AV2_
791 LOW
792 )))|(((
793 AV2_
794 HIGH
795 )))|(((
796 AC1_
797 LOW
798 )))|(((
799 AC1_
800 HIGH
801 )))|(((
802 AC2_
803 LOW
804 )))|(((
805 AC2_
806 HIGH
807 )))
808
809 * Each bits shows if the corresponding trigger has been configured.
810
811 **Example:**
812
813 10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
814
815
816 (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
817
818 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
819 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
820 |(((
821 AV1_
822 LOW
823 )))|(((
824 AV1_
825 HIGH
826 )))|(((
827 AV2_
828 LOW
829 )))|(((
830 AV2_
831 HIGH
832 )))|(((
833 AC1_
834 LOW
835 )))|(((
836 AC1_
837 HIGH
838 )))|(((
839 AC2_
840 LOW
841 )))|(((
842 AC2_
843 HIGH
844 )))
845
846 * Each bits shows which status has been trigger on this uplink.
847
848 **Example:**
849
850 10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
851
852
853 (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
854
855 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
856 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
857 |N/A|N/A|N/A|N/A|DI2_STATUS|DI2_FLAG|DI1_STATUS|DI1_FLAG
858
859 * Each bits shows which status has been trigger on this uplink.
860
861 **Example:**
862
863 00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
864
865 00000101: Means both DI1 and DI2 trigger are enabled.
866
867
868 (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
869
870 Downlink command to poll MOD6 status:
871
872 **AB 06**
873
874 When device got this command, it will send the MOD6 payload.
875
876
877 === 3.3.7 Payload Decoder ===
878
879 (((
880
881
882 **Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
883 )))
884
885
886 == 3.4 ​Configure LT via AT or Downlink ==
887
888
889 (((
890 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
891 )))
892
893 (((
894 (((
895 There are two kinds of Commands:
896 )))
897 )))
898
899 * (% 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]]
900
901 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
902
903 === 3.4.1 Common Commands ===
904
905
906 (((
907 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]]
908 )))
909
910
911 === 3.4.2 Sensor related commands ===
912
913 ==== 3.4.2.1 Set Transmit Interval ====
914
915
916 Set device uplink interval.
917
918 * (% style="color:#037691" %)**AT Command:**
919
920 (% style="color:blue" %)**AT+TDC=N **
921
922
923 **Example: **AT+TDC=30000. Means set interval to 30 seconds
924
925
926 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
927
928 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
929
930
931
932 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
933
934
935 Set work mode.
936
937 * (% style="color:#037691" %)**AT Command:**
938
939 (% style="color:blue" %)**AT+MOD=N  **
940
941
942 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
943
944
945 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
946
947 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
948
949
950
951 ==== 3.4.2.3 Poll an uplink ====
952
953
954 * (% style="color:#037691" %)**AT Command:**
955
956 There is no AT Command to poll uplink
957
958
959 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
960
961 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
962
963
964 **Example**: 0x08FF, ask device to send an Uplink
965
966
967
968 ==== 3.4.2.4 Enable Trigger Mode ====
969
970
971 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
972
973 * (% style="color:#037691" %)**AT Command:**
974
975 (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
976
977 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
978
979 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
980
981
982 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
983
984 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
985
986
987
988 ==== 3.4.2.5 Poll trigger settings ====
989
990
991 Poll trigger settings,
992
993 * (% style="color:#037691" %)**AT Command:**
994
995 There is no AT Command for this feature.
996
997
998 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
999
1000 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
1001
1002
1003
1004 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
1005
1006
1007 Enable Disable DI1/DI2/DI2 as trigger,
1008
1009 * (% style="color:#037691" %)**AT Command:**
1010
1011 (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
1012
1013
1014 **Example:**
1015
1016 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
1017
1018 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
1019
1020 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
1021
1022
1023
1024 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
1025
1026
1027 Set DI1 or DI3(for LT-33222-L) trigger.
1028
1029 * (% style="color:#037691" %)**AT Command:**
1030
1031 (% style="color:blue" %)**AT+TRIG1=a,b**
1032
1033 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
1034
1035 (% style="color:red" %)**b :** (%%)delay timing.
1036
1037
1038 **Example:**
1039
1040 AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
1041
1042
1043 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
1044
1045 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
1046
1047
1048
1049 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
1050
1051
1052 Set DI2 trigger.
1053
1054 * (% style="color:#037691" %)**AT Command:**
1055
1056 (% style="color:blue" %)**AT+TRIG2=a,b**
1057
1058 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
1059
1060 (% style="color:red" %)**b :** (%%)delay timing.
1061
1062
1063 **Example:**
1064
1065 AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
1066
1067
1068 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
1069
1070 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
1071
1072
1073
1074 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
1075
1076
1077 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
1078
1079 * (% style="color:#037691" %)**AT Command**
1080
1081 (% style="color:blue" %)**AT+ACLIM**
1082
1083
1084 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
1085
1086 (% 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"]]
1087
1088
1089
1090 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
1091
1092
1093 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
1094
1095 * (% style="color:#037691" %)**AT Command**
1096
1097 (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
1098
1099
1100 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
1101
1102 (% 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"]]
1103
1104
1105
1106 ==== 3.4.2.11 Trigger – Set minimum interval ====
1107
1108
1109 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
1110
1111 * (% style="color:#037691" %)**AT Command**
1112
1113 (% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
1114
1115
1116 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
1117
1118 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
1119
1120 (((
1121
1122
1123 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
1124 )))
1125
1126
1127
1128 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1129
1130
1131 * (% style="color:#037691" %)**AT Command**
1132
1133 There is no AT Command to control Digital Output
1134
1135
1136 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1137 * (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1138
1139 (((
1140 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1141 )))
1142
1143 (((
1144 01: Low,  00: High ,  11: No action
1145
1146 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1147 |(% 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**
1148 |02  01  00  11|Low|High|No Action
1149 |02  00  11  01|High|No Action|Low
1150 |02  11  01  00|No Action|Low|High
1151 )))
1152
1153
1154 (((
1155 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1156 )))
1157
1158 (((
1159 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1160 )))
1161
1162
1163
1164 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1165
1166
1167 * (% style="color:#037691" %)**AT Command**
1168
1169 There is no AT Command to control Digital Output
1170
1171
1172 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1173
1174 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1175
1176
1177 This is to control the digital output time of DO pin. Include four bytes:
1178
1179 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1180
1181 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1182
1183 01: DO pins will change back to original state after timeout.
1184
1185 00: DO pins will change to an inverter state after timeout 
1186
1187
1188 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1189
1190 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1191 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1192 |0x01|DO1 set to low
1193 |0x00|DO1 set to high
1194 |0x11|DO1 NO Action
1195
1196 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1197
1198 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1199 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1200 |0x01|DO2 set to low
1201 |0x00|DO2 set to high
1202 |0x11|DO2 NO Action
1203
1204 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1205
1206 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1207 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1208 |0x01|DO3 set to low
1209 |0x00|DO3 set to high
1210 |0x11|DO3 NO Action
1211
1212 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:(%%) Latching time. Unit: ms
1213
1214
1215 (% style="color:red" %)**Note: **
1216
1217 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1218
1219 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1220
1221
1222 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1223
1224
1225 **Example payload:**
1226
1227 **~1. A9 01 01 01 01 07 D0**
1228
1229 DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
1230
1231 **2. A9 01 00 01 11 07 D0**
1232
1233 DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
1234
1235 **3. A9 00 00 00 00 07 D0**
1236
1237 DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
1238
1239 **4. A9 00 11 01 00 07 D0**
1240
1241 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
1242
1243
1244
1245 ==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1246
1247
1248 * (% style="color:#037691" %)**AT Command:**
1249
1250 There is no AT Command to control Relay Output
1251
1252
1253 * (% style="color:#037691" %)**Downlink Payload (prefix 0x03):**
1254
1255 (% style="color:blue" %)**0x03 aa bb     ** (%%)~/~/ Set RO1/RO2 output
1256
1257
1258 (((
1259 If payload = 0x030100, it means set RO1 to close and RO2 to open.
1260 )))
1261
1262 (((
1263 01: Close ,  00: Open , 11: No action
1264
1265 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1266 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO2**
1267 |03  00  11|Open|No Action
1268 |03  01  11|Close|No Action
1269 |03  11  00|No Action|Open
1270 |03  11  01|No Action|Close
1271 |03  00  00|Open|Open
1272 |03  01  01|Close|Close
1273 |03  01  00|Close|Open
1274 |03  00  01|Open|Close
1275 )))
1276
1277 (((
1278
1279 )))
1280
1281 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1282
1283
1284
1285 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1286
1287
1288 * (% style="color:#037691" %)**AT Command:**
1289
1290 There is no AT Command to control Relay Output
1291
1292
1293 * (% style="color:#037691" %)**Downlink Payload (prefix 0x05):**
1294
1295 (% style="color:blue" %)**0x05 aa bb cc dd     ** (%%)~/~/ Set RO1/RO2 relay with time control
1296
1297
1298 This is to control the relay output time of relay. Include four bytes:
1299
1300 (% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
1301
1302 (% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
1303
1304 01: Relays will change back to original state after timeout.
1305
1306 00: Relays will change to an inverter state after timeout
1307
1308
1309 (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1310
1311 [[image:image-20221008095908-1.png||height="364" width="564"]]
1312
1313
1314 (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1315
1316
1317 (% style="color:red" %)**Note:**
1318
1319 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1320
1321 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1322
1323
1324 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1325
1326
1327 **Example payload:**
1328
1329 **~1. 05 01 11 07 D0**
1330
1331 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1332
1333 **2. 05 01 10 07 D0**
1334
1335 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1336
1337 **3. 05 00 01 07 D0**
1338
1339 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1340
1341 **4. 05 00 00 07 D0**
1342
1343 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1344
1345
1346
1347 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1348
1349
1350 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1351
1352 * (% style="color:#037691" %)**AT Command:**
1353
1354 (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1355
1356
1357 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1358
1359 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1360
1361
1362
1363 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1364
1365
1366 * (% style="color:#037691" %)**AT Command:**
1367
1368 (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1369
1370 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1371
1372 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1373
1374
1375 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1376
1377 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1378
1379
1380
1381 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1382
1383
1384 Clear counting for counting mode
1385
1386 * (% style="color:#037691" %)**AT Command:**
1387
1388 (% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1389
1390
1391 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1392
1393 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1394
1395
1396
1397 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1398
1399
1400 * (% style="color:#037691" %)**AT Command:**
1401
1402 (% 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)
1403
1404
1405 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1406
1407 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1408
1409 (((
1410 range: aa bb cc:0 to 16777215,  (unit:second)
1411 )))
1412
1413
1414
1415 ==== 3.4.2.20 Reset save RO DO state ====
1416
1417
1418 * (% style="color:#037691" %)**AT Command:**
1419
1420 (% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1421
1422 (% 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.
1423
1424
1425 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1426
1427 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1428
1429
1430
1431 ==== 3.4.2.21 Encrypted payload ====
1432
1433
1434 * (% style="color:#037691" %)**AT Command:**
1435
1436 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1437
1438 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1439
1440
1441
1442 ==== 3.4.2.22 Get sensor value ====
1443
1444
1445 * (% style="color:#037691" %)**AT Command:**
1446
1447 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1448
1449 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1450
1451
1452
1453 ==== 3.4.2.23 Resets the downlink packet count ====
1454
1455
1456 * (% style="color:#037691" %)**AT Command:**
1457
1458 (% 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)
1459
1460 (% 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.
1461
1462
1463
1464 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1465
1466
1467 * (% style="color:#037691" %)**AT Command:**
1468
1469 (% 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)
1470
1471 (% 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.
1472
1473
1474 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1475
1476 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1477
1478
1479
1480 ==== 3.4.2.25 Copy downlink to uplink ====
1481
1482
1483 * (% style="color:#037691" %)**AT Command**(%%)**:**
1484
1485 (% 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.
1486
1487 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.
1488
1489
1490 [[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"]]
1491
1492 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1493
1494
1495
1496 [[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"]]
1497
1498 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1499
1500
1501
1502 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1503
1504
1505 * (((
1506 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1507
1508 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1509
1510
1511 )))
1512
1513 **Example：**
1514
1515 [[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"]]
1516
1517
1518 == 3.5 Integrate with Mydevice ==
1519
1520
1521 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:
1522
1523 (((
1524 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1525 )))
1526
1527 (((
1528 (% 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:
1529
1530
1531 )))
1532
1533 [[image:image-20220719105525-1.png||height="377" width="677"]]
1534
1535
1536
1537 [[image:image-20220719110247-2.png||height="388" width="683"]]
1538
1539
1540 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1541
1542 (% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L) and add DevEUI.(% style="display:none" %)
1543
1544 Search under The things network
1545
1546 [[image:1653356838789-523.png||height="337" width="740"]]
1547
1548
1549
1550 After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1551
1552 [[image:image-20220524094909-1.png||height="335" width="729"]]
1553
1554
1555 [[image:image-20220524094909-2.png||height="337" width="729"]]
1556
1557
1558 [[image:image-20220524094909-3.png||height="338" width="727"]]
1559
1560
1561 [[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1562
1563
1564 [[image:image-20220524094909-5.png||height="341" width="734"]]
1565
1566
1567 == 3.6 Interface Detail ==
1568
1569 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1570
1571
1572 Support NPN Type sensor
1573
1574 [[image:1653356991268-289.png]]
1575
1576
1577 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1578
1579
1580 (((
1581 The DI port of LT-22222-L can support NPN or PNP output sensor.
1582 )))
1583
1584 (((
1585 (((
1586 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.
1587
1588
1589 )))
1590 )))
1591
1592 [[image:1653357170703-587.png]]
1593
1594 (((
1595 (((
1596 When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1597 )))
1598 )))
1599
1600 (((
1601
1602 )))
1603
1604 (((
1605 (% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1606 )))
1607
1608 (((
1609 This type of sensor will output a low signal GND when active.
1610 )))
1611
1612 * (((
1613 Connect sensor's output to DI1-
1614 )))
1615 * (((
1616 Connect sensor's VCC to DI1+.
1617 )))
1618
1619 (((
1620 So when sensor active, the current between NEC2501 pin1 and pin2 is：
1621 )))
1622
1623 (((
1624 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1625 )))
1626
1627 (((
1628 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.
1629 )))
1630
1631 (((
1632
1633 )))
1634
1635 (((
1636 (% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1637 )))
1638
1639 (((
1640 This type of sensor will output a high signal (example 24v) when active.
1641 )))
1642
1643 * (((
1644 Connect sensor's output to DI1+
1645 )))
1646 * (((
1647 Connect sensor's GND DI1-.
1648 )))
1649
1650 (((
1651 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1652 )))
1653
1654 (((
1655 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1656 )))
1657
1658 (((
1659 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.
1660 )))
1661
1662 (((
1663
1664 )))
1665
1666 (((
1667 (% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1668 )))
1669
1670 (((
1671 Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1672 )))
1673
1674 * (((
1675 Connect sensor's output to DI1+ with a serial 50K resistor
1676 )))
1677 * (((
1678 Connect sensor's GND DI1-.
1679 )))
1680
1681 (((
1682 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1683 )))
1684
1685 (((
1686 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1687 )))
1688
1689 (((
1690 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.
1691 )))
1692
1693
1694 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1695
1696
1697 (% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1698
1699 (% style="color:red" %)**Note: DO pins go to float when device is power off.**
1700
1701 [[image:1653357531600-905.png]]
1702
1703
1704 === 3.6.4 Analog Input Interface ===
1705
1706
1707 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:
1708
1709
1710 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1711
1712 [[image:1653357592296-182.png]]
1713
1714 Example to connect a 4~~20mA sensor
1715
1716 We take the wind speed sensor as an example for reference only.
1717
1718
1719 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1720
1721 (% style="color:red" %)**Red:  12~~24v**
1722
1723 (% style="color:#ffc000" %)**Yellow:  4~~20mA**
1724
1725 **Black:  GND**
1726
1727 **Connection diagram:**
1728
1729 [[image:1653357640609-758.png]]
1730
1731 [[image:1653357648330-671.png||height="155" width="733"]]
1732
1733
1734 Example connected to a regulated power supply to measure voltage
1735
1736 [[image:image-20230608101532-1.png||height="606" width="447"]]
1737
1738 [[image:image-20230608101608-2.jpeg||height="379" width="284"]]
1739
1740 [[image:image-20230608101722-3.png||height="102" width="1139"]]
1741
1742
1743 (% style="color:blue; font-weight:bold" %)**Specifications of the regulated power**(%%) (% style="color:blue" %)**:**
1744
1745 (% style="color:red" %)**Red:  12~~24v**
1746
1747 **Black:  GND**
1748
1749
1750 === 3.6.5 Relay Output ===
1751
1752
1753 (((
1754 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:
1755
1756 **Note**: RO pins go to Open(NO) when device is power off.
1757 )))
1758
1759 [[image:image-20220524100215-9.png]]
1760
1761
1762 [[image:image-20220524100215-10.png||height="382" width="723"]]
1763
1764
1765 == 3.7 LEDs Indicators ==
1766
1767
1768 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1769 |(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**LEDs**|(% style="background-color:#d9e2f3; color:#0070c0; width:470px" %)**Feature**
1770 |**PWR**|Always on if there is power
1771 |**SYS**|(((
1772 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.
1773 )))
1774 |**TX**|(((
1775 (((
1776 Device boot: TX blinks 5 times.
1777 )))
1778
1779 (((
1780 Successful join network: TX ON for 5 seconds.
1781 )))
1782
1783 (((
1784 Transmit a LoRa packet: TX blinks once
1785 )))
1786 )))
1787 |**RX**|RX blinks once when receive a packet.
1788 |**DO1**|
1789 |**DO2**|
1790 |**DO3**|
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 |**DI2**|(((
1798 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1799 )))
1800 |**RO1**|
1801 |**RO2**|
1802
1803 = 4. Use AT Command =
1804
1805 == 4.1 Access AT Command ==
1806
1807
1808 (((
1809 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.
1810 )))
1811
1812 (((
1813
1814 )))
1815
1816 [[image:1653358238933-385.png]]
1817
1818
1819 (((
1820 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:
1821 )))
1822
1823 [[image:1653358355238-883.png]]
1824
1825
1826 (((
1827 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/]]
1828 )))
1829
1830 (((
1831 AT+<CMD>?        : Help on <CMD>
1832 )))
1833
1834 (((
1835 AT+<CMD>         : Run <CMD>
1836 )))
1837
1838 (((
1839 AT+<CMD>=<value> : Set the value
1840 )))
1841
1842 (((
1843 AT+<CMD>=?       :  Get the value
1844 )))
1845
1846 (((
1847 ATZ: Trig a reset of the MCU
1848 )))
1849
1850 (((
1851 AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1852 )))
1853
1854 (((
1855 AT+DEUI: Get or Set the Device EUI
1856 )))
1857
1858 (((
1859 AT+DADDR: Get or Set the Device Address
1860 )))
1861
1862 (((
1863 AT+APPKEY: Get or Set the Application Key
1864 )))
1865
1866 (((
1867 AT+NWKSKEY: Get or Set the Network Session Key
1868 )))
1869
1870 (((
1871 AT+APPSKEY:  Get or Set the Application Session Key
1872 )))
1873
1874 (((
1875 AT+APPEUI:  Get or Set the Application EUI
1876 )))
1877
1878 (((
1879 AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1880 )))
1881
1882 (((
1883 AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1884 )))
1885
1886 (((
1887 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1888 )))
1889
1890 (((
1891 AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1892 )))
1893
1894 (((
1895 AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1896 )))
1897
1898 (((
1899 AT+RX2FQ: Get or Set the Rx2 window frequency
1900 )))
1901
1902 (((
1903 AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1904 )))
1905
1906 (((
1907 AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1908 )))
1909
1910 (((
1911 AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1912 )))
1913
1914 (((
1915 AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1916 )))
1917
1918 (((
1919 AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1920 )))
1921
1922 (((
1923 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1924 )))
1925
1926 (((
1927 AT+NWKID: Get or Set the Network ID
1928 )))
1929
1930 (((
1931 AT+FCU: Get or Set the Frame Counter Uplink
1932 )))
1933
1934 (((
1935 AT+FCD: Get or Set the Frame Counter Downlink
1936 )))
1937
1938 (((
1939 AT+CLASS: Get or Set the Device Class
1940 )))
1941
1942 (((
1943 AT+JOIN: Join network
1944 )))
1945
1946 (((
1947 AT+NJS: Get OTAA Join Status
1948 )))
1949
1950 (((
1951 AT+SENDB: Send hexadecimal data along with the application port
1952 )))
1953
1954 (((
1955 AT+SEND: Send text data along with the application port
1956 )))
1957
1958 (((
1959 AT+RECVB: Print last received data in binary format (with hexadecimal values)
1960 )))
1961
1962 (((
1963 AT+RECV: Print last received data in raw format
1964 )))
1965
1966 (((
1967 AT+VER:  Get current image version and Frequency Band
1968 )))
1969
1970 (((
1971 AT+CFM: Get or Set the confirmation mode (0-1)
1972 )))
1973
1974 (((
1975 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1976 )))
1977
1978 (((
1979 AT+SNR: Get the SNR of the last received packet
1980 )))
1981
1982 (((
1983 AT+RSSI: Get the RSSI of the last received packet
1984 )))
1985
1986 (((
1987 AT+TDC: Get or set the application data transmission interval in ms
1988 )))
1989
1990 (((
1991 AT+PORT: Get or set the application port
1992 )))
1993
1994 (((
1995 AT+DISAT: Disable AT commands
1996 )))
1997
1998 (((
1999 AT+PWORD: Set password, max 9 digits
2000 )))
2001
2002 (((
2003 AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
2004 )))
2005
2006 (((
2007 AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
2008 )))
2009
2010 (((
2011 AT+CFG: Print all settings
2012 )))
2013
2014
2015 == 4.2 Common AT Command Sequence ==
2016
2017 === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
2018
2019 (((
2020
2021
2022 (((
2023 (% style="color:blue" %)**If device has not joined network yet:**
2024 )))
2025 )))
2026
2027 (((
2028 (% style="background-color:#dcdcdc" %)**123456**
2029 )))
2030
2031 (((
2032 (% style="background-color:#dcdcdc" %)**AT+FDR**
2033 )))
2034
2035 (((
2036 (% style="background-color:#dcdcdc" %)**123456**
2037 )))
2038
2039 (((
2040 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
2041 )))
2042
2043 (((
2044 (% style="background-color:#dcdcdc" %)**ATZ**
2045 )))
2046
2047
2048 (((
2049 (% style="color:blue" %)**If device already joined network:**
2050 )))
2051
2052 (((
2053 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
2054 )))
2055
2056 (((
2057 (% style="background-color:#dcdcdc" %)**ATZ**
2058 )))
2059
2060
2061 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
2062
2063 (((
2064
2065
2066 (((
2067 (% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
2068 )))
2069 )))
2070
2071 (((
2072 (% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
2073 )))
2074
2075 (((
2076 (% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
2077 )))
2078
2079 (((
2080 (% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
2081 )))
2082
2083 (((
2084 (% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
2085 )))
2086
2087 (((
2088 (% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
2089 )))
2090
2091 (((
2092 (% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
2093 )))
2094
2095 (((
2096 (% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
2097 )))
2098
2099 (((
2100 (% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
2101 )))
2102
2103 (((
2104 (% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
2105 )))
2106
2107 (((
2108 (% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
2109 )))
2110
2111 (((
2112 (% 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.
2113 )))
2114
2115 (((
2116 (% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
2117
2118
2119 )))
2120
2121 (((
2122 (% style="color:red" %)**Note:**
2123 )))
2124
2125 (((
2126 **~1. Make sure the device is set to ABP mode in the IoT Server.**
2127
2128 **2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
2129
2130 **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?
2131 dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
2132
2133 **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.**
2134
2135
2136 )))
2137
2138 (((
2139 [[image:1653359097980-169.png||height="188" width="729"]]
2140 )))
2141
2142 (((
2143
2144 )))
2145
2146 === 4.2.3 Change to Class A ===
2147
2148
2149 (((
2150 (% style="color:blue" %)**If sensor JOINED:**
2151
2152 (% style="background-color:#dcdcdc" %)**AT+CLASS=A
2153 ATZ**
2154 )))
2155
2156
2157 = 5. Case Study =
2158
2159 == 5.1 Counting how many objects pass in Flow Line ==
2160
2161
2162 Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
2163
2164
2165 = 6. FAQ =
2166
2167 == 6.1 How to upgrade the image? ==
2168
2169
2170 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
2171
2172 * Support new features
2173 * For bug fix
2174 * Change LoRaWAN bands.
2175
2176 Below shows the hardware connection for how to upload an image to the LT:
2177
2178 [[image:1653359603330-121.png]]
2179
2180
2181 (((
2182 (% 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]].
2183 (% 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]].
2184 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
2185
2186
2187 (((
2188 (% style="color:blue" %)**For LT-22222-L**(%%):
2189 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.
2190 )))
2191
2192
2193 )))
2194
2195 [[image:image-20220524103407-12.png]]
2196
2197
2198 [[image:image-20220524103429-13.png]]
2199
2200
2201 [[image:image-20220524104033-15.png]]
2202
2203
2204 (% 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:
2205
2206
2207 [[image:1653360054704-518.png||height="186" width="745"]]
2208
2209
2210 (((
2211 (((
2212 == 6.2 How to change the LoRa Frequency Bands/Region? ==
2213
2214
2215 )))
2216 )))
2217
2218 (((
2219 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2220 )))
2221
2222 (((
2223
2224
2225 == 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2226
2227
2228 )))
2229
2230 (((
2231 (((
2232 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2233 )))
2234 )))
2235
2236 (((
2237 (((
2238 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2239
2240
2241 )))
2242 )))
2243
2244 (((
2245 (% 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.
2246
2247
2248 )))
2249
2250 (((
2251 [[image:1653360231087-571.png||height="401" width="727"]]
2252
2253
2254 )))
2255
2256 (((
2257 (% 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.**
2258 )))
2259
2260
2261
2262 (((
2263 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2264
2265
2266 )))
2267
2268 (((
2269 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2270 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2271 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2272 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2273 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2274 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2275 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2276 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2277 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2278 )))
2279
2280
2281 (((
2282 As shown in below:
2283 )))
2284
2285 [[image:1653360498588-932.png||height="485" width="726"]]
2286
2287
2288 == 6.4 How to change the uplink interval？ ==
2289
2290
2291 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/]]
2292
2293
2294 == 6.5 Can I see counting event in Serial? ==
2295
2296
2297 (((
2298 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.
2299
2300
2301 == 6.6 Can i use point to point communication for LT-22222-L? ==
2302
2303
2304 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]].
2305
2306
2307 )))
2308
2309 (((
2310 == 6.7 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2311
2312
2313 If the device is not shut down, but directly powered off.
2314
2315 It will default that this is a power-off state.
2316
2317 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2318
2319 After restart, the status before power failure will be read from flash.
2320
2321
2322 == 6.8 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2323
2324
2325 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2326
2327
2328 [[image:image-20221006170630-1.png||height="610" width="945"]]
2329
2330
2331 == 6.9 Can LT22222-L save RO state? ==
2332
2333
2334 Firmware version needs to be no less than 1.6.0.
2335
2336
2337 = 7. Trouble Shooting =
2338 )))
2339
2340 (((
2341 (((
2342 == 7.1 Downlink doesn't work, how to solve it? ==
2343
2344
2345 )))
2346 )))
2347
2348 (((
2349 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2350 )))
2351
2352 (((
2353
2354
2355 == 7.2 Have trouble to upload image. ==
2356
2357
2358 )))
2359
2360 (((
2361 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2362 )))
2363
2364 (((
2365
2366
2367 == 7.3 Why I can't join TTN in US915 /AU915 bands? ==
2368
2369
2370 )))
2371
2372 (((
2373 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2374 )))
2375
2376
2377 = 8. Order Info =
2378
2379
2380 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2381
2382 (% style="color:#4f81bd" %)**XXX:**
2383
2384 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2385 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2386 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2387 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2388 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2389 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2390 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2391 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2392 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2393
2394 = 9. Packing Info =
2395
2396
2397 **Package Includes**:
2398
2399 * LT-22222-L I/O Controller x 1
2400 * Stick Antenna for LoRa RF part x 1
2401 * Bracket for controller x1
2402 * Program cable x 1
2403
2404 **Dimension and weight**:
2405
2406 * Device Size: 13.5 x 7 x 3 cm
2407 * Device Weight: 105g
2408 * Package Size / pcs : 14.5 x 8 x 5 cm
2409 * Weight / pcs : 170g
2410
2411 = 10. Support =
2412
2413
2414 * (((
2415 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.
2416 )))
2417 * (((
2418 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]]
2419
2420
2421
2422 )))
2423
2424 = 11. Reference​​​​​ =
2425
2426
2427 * 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]]
2428 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2429 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]