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Version 126.14 by Xiaoling on 2023/06/19 16:08
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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 == 1.4  Applications ==
193
194
195 * Smart Buildings & Home Automation
196
197 * Logistics and Supply Chain Management
198
199 * Smart Metering
200
201 * Smart Agriculture
202
203 * Smart Cities
204
205 * Smart Factory
206
207
208 == 1.5 Hardware Variants ==
209
210
211 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
212 |(% 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:266px" %)**Description**
213 |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
214 (% style="text-align:center" %)
215 [[image:image-20230424115112-1.png||height="106" width="58"]]
216 )))|(% style="width:334px" %)(((
217 * 2 x Digital Input (Bi-direction)
218 * 2 x Digital Output
219 * 2 x Relay Output (5A@250VAC / 30VDC)
220 * 2 x 0~~20mA Analog Input (res:0.01mA)
221 * 2 x 0~~30V Analog Input (res:0.01v)
222 * 1 x Counting Port
223 )))
224
225 = 2. Power ON Device =
226
227
228 (((
229 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.
230 )))
231
232 (((
233 PWR will on when device is properly powered.
234
235
236 )))
237
238 [[image:1653297104069-180.png]]
239
240
241 = 3. Operation Mode =
242
243 == 3.1 How it works? ==
244
245
246 (((
247 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. 
248 )))
249
250 (((
251 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.
252 )))
253
254
255 == 3.2 Example to join LoRaWAN network ==
256
257
258 (((
259 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. 
260
261
262 )))
263
264 [[image:image-20220523172350-1.png||height="266" width="864"]]
265
266
267 (((
268 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:
269
270
271 )))
272
273 (((
274 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
275 )))
276
277 (((
278 Each LT is shipped with a sticker with the default device EUI as below:
279 )))
280
281 [[image:image-20230425173427-2.png||height="246" width="530"]]
282
283
284 Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
285
286 **Add APP EUI in the application.**
287
288 [[image:1653297955910-247.png||height="321" width="716"]]
289
290
291 **Add APP KEY and DEV EUI**
292
293 [[image:1653298023685-319.png]]
294
295
296
297 (((
298 (% 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.
299
300
301 )))
302
303 [[image:1653298044601-602.png||height="405" width="709"]]
304
305
306 == 3.3 Uplink Payload ==
307
308
309 There are five working modes + one interrupt mode on LT for different type application:
310
311 * (% style="color:blue" %)**MOD1**(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
312
313 * (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO
314
315 * (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO
316
317 * (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
318
319 * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
320
321 * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
322
323 === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
324
325
326 (((
327 The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default. (% style="display:none" %)
328
329 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
330 |(% 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**
331 |Value|(((
332 AVI1 voltage
333 )))|(((
334 AVI2 voltage
335 )))|(((
336 ACI1 Current
337 )))|(((
338 ACI2 Current
339 )))|DIDORO*|(((
340 Reserve
341 )))|MOD
342 )))
343
344 (((
345 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
346
347 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
348 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
349 |RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
350 )))
351
352 * RO is for relay. ROx=1 : close，ROx=0 always open.
353 * DI is for digital input. DIx=1: high or float, DIx=0: low.
354 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
355
356 (% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
357
358 For example if payload is: [[image:image-20220523175847-2.png]]
359
360
361 **The value for the interface is:  **
362
363 AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
364
365 AVI2 channel voltage is 0x04AC/1000=1.196V
366
367 ACI1 channel current is 0x1310/1000=4.880mA
368
369 ACI2 channel current is 0x1300/1000=4.864mA
370
371 The last byte 0xAA= 10101010(B) means
372
373 * [1] RO1 relay channel is close and the RO1 LED is ON.
374 * [0] RO2 relay channel is open and RO2 LED is OFF;
375
376 **LT22222-L:**
377
378 * [1] DI2 channel is high input and DI2 LED is ON;
379 * [0] DI1 channel is low input;
380
381 * [0] DO3 channel output state
382 ** DO3 is float in case no load between DO3 and V+.;
383 ** DO3 is high in case there is load between DO3 and V+.
384 ** DO3 LED is off in both case
385 * [1] DO2 channel output is low and DO2 LED is ON.
386 * [0] DO1 channel output state
387 ** DO1 is float in case no load between DO1 and V+.;
388 ** DO1 is high in case there is load between DO1 and V+.
389 ** DO1 LED is off in both case
390
391
392 === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
393
394
395 (((
396 **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
397 )))
398
399 (((
400 Total : 11 bytes payload
401
402 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
403 |(% 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**
404 |Value|COUNT1|COUNT2 |DIDORO*|(((
405 Reserve
406 )))|MOD
407 )))
408
409 (((
410 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
411
412 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
413 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
414 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
415
416 RO is for relay. ROx=1 : close，ROx=0 always open.
417 )))
418
419 * FIRST: Indicate this is the first packet after join network.
420 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
421
422 (((
423 (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
424 )))
425
426 (((
427 **To use counting mode, please run:**
428 )))
429
430
431 (((
432 (% class="box infomessage" %)
433 (((
434 **AT+MOD=2**
435
436 **ATZ**
437 )))
438 )))
439
440 (((
441
442
443 (% style="color:#4f81bd" %)**AT Commands for counting:**
444 )))
445
446 (((
447 **For LT22222-L:**
448
449 (% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
450
451 (% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
452
453 (% style="color:blue" %)**AT+TRIG2=0,100**(%%)**  (set DI2 port to trigger on low level, valid signal is 100ms) **
454
455 (% style="color:blue" %)**AT+TRIG2=1,100**(%%)**  (set DI2 port to trigger on high level, valid signal is 100ms ) **
456
457 (% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set COUNT1 value to 60)**
458
459 (% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set COUNT2 value to 60)**
460 )))
461
462
463 === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
464
465
466 **LT22222-L**: This mode the DI1 is used as a counting pin.
467
468 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
469 |(% 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**
470 |Value|COUNT1|(((
471 ACI1 Current
472 )))|(((
473 ACI2 Current
474 )))|DIDORO*|Reserve|MOD
475
476 (((
477 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
478
479 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
480 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
481 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
482 )))
483
484 * RO is for relay. ROx=1 : close，ROx=0 always open.
485 * FIRST: Indicate this is the first packet after join network.
486 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
487
488 (((
489 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
490 )))
491
492
493 (((
494 **To use counting mode, please run:**
495 )))
496
497 (((
498 (% class="box infomessage" %)
499 (((
500 **AT+MOD=3**
501
502 **ATZ**
503 )))
504 )))
505
506 (((
507 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
508 )))
509
510
511 === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
512
513
514 (((
515 **LT22222-L**: This mode the DI1 is used as a counting pin.
516 )))
517
518 (((
519 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.
520
521 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
522 |(% 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**
523 |Value|COUNT1|AVI1 Counting|DIDORO*|(((
524 Reserve
525 )))|MOD
526 )))
527
528 (((
529 (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
530
531 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
532 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
533 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
534 )))
535
536 * RO is for relay. ROx=1 : close，ROx=0 always open.
537 * FIRST: Indicate this is the first packet after join network.
538 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
539
540 (((
541 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
542
543
544 )))
545
546 (((
547 **To use this mode, please run:**
548 )))
549
550 (((
551 (% class="box infomessage" %)
552 (((
553 **AT+MOD=4**
554
555 **ATZ**
556 )))
557 )))
558
559 (((
560 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
561 )))
562
563 (((
564 **Plus below command for AVI1 Counting:**
565
566 (% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
567
568 (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
569
570 (% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**  (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
571
572 (% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**  (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
573 )))
574
575
576 === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
577
578
579 **LT22222-L**: This mode the DI1 is used as a counting pin.
580
581 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
582 |(% 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**
583 |Value|(((
584 AVI1 voltage
585 )))|(((
586 AVI2 voltage
587 )))|(((
588 ACI1 Current
589 )))|COUNT1|DIDORO*|(((
590 Reserve
591 )))|MOD
592
593 (((
594 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
595
596 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
597 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
598 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
599 )))
600
601 * RO is for relay. ROx=1 : close，ROx=0 always open.
602 * FIRST: Indicate this is the first packet after join network.
603 * (((
604 DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
605 )))
606
607 (((
608 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
609 )))
610
611 (((
612
613
614 **To use this mode, please run:**
615 )))
616
617 (((
618 (% class="box infomessage" %)
619 (((
620 **AT+MOD=5**
621
622 **ATZ**
623 )))
624 )))
625
626 (((
627 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
628 )))
629
630
631 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
632
633
634 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
635
636 For example, if user has configured below commands:
637
638 * **AT+MOD=1 ** **~-~->**  The normal working mode
639 * **AT+ADDMOD6=1**   **~-~->**  Enable trigger
640
641 LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
642
643 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
644 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.**
645
646
647 (% style="color:#037691" %)**AT Command to set Trigger Condition**:
648
649
650 (% style="color:#4f81bd" %)**Trigger base on voltage**:
651
652 Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
653
654
655 **Example:**
656
657 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)
658
659 AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
660
661
662
663 (% style="color:#4f81bd" %)**Trigger base on current**:
664
665 Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
666
667
668 **Example:**
669
670 AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
671
672
673
674 (% style="color:#4f81bd" %)**Trigger base on DI status**:
675
676 DI status trigger Flag.
677
678 Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
679
680
681 **Example:**
682
683 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
684
685
686 (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
687
688 Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
689
690 Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
691
692 AA: Code for this downlink Command:
693
694 xx: 0: Limit for AV1 and AV2;  1: limit for AC1 and AC2 ; 2 DI1, DI2 trigger enable/disable
695
696 yy1 yy1: AC1 or AV1 low limit or DI1/DI2 trigger status.
697
698 yy2 yy2: AC1 or AV1 high limit.
699
700 yy3 yy3: AC2 or AV2 low limit.
701
702 Yy4 yy4: AC2 or AV2 high limit.
703
704
705 **Example1**: AA 00 13 88 00 00 00 00 00 00
706
707 Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
708
709
710 **Example2**: AA 02 01 00
711
712 Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
713
714
715
716 (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
717
718 MOD6 Payload : total 11 bytes payload
719
720 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
721 |(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:69px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:69px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:109px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:49px" %)**6**|(% style="background-color:#d9e2f3; color:#0070c0; width:109px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**1**
722 |Value|(((
723 TRI_A FLAG
724 )))|(((
725 TRI_A Status
726 )))|(((
727 TRI_DI FLAG+STA
728 )))|Reserve|Enable/Disable MOD6|(((
729 MOD(6)
730 )))
731
732 (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
733
734 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
735 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
736 |(((
737 AV1_LOW
738 )))|(((
739 AV1_HIGH
740 )))|(((
741 AV2_LOW
742 )))|(((
743 AV2_HIGH
744 )))|(((
745 AC1_LOW
746 )))|(((
747 AC1_HIGH
748 )))|(((
749 AC2_LOW
750 )))|(((
751 AC2_HIGH
752 )))
753
754 * Each bits shows if the corresponding trigger has been configured.
755
756 **Example:**
757
758 10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
759
760
761 (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
762
763 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
764 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
765 |(((
766 AV1_LOW
767 )))|(((
768 AV1_HIGH
769 )))|(((
770 AV2_LOW
771 )))|(((
772 AV2_HIGH
773 )))|(((
774 AC1_LOW
775 )))|(((
776 AC1_HIGH
777 )))|(((
778 AC2_LOW
779 )))|(((
780 AC2_HIGH
781 )))
782
783 * Each bits shows which status has been trigger on this uplink.
784
785 **Example:**
786
787 10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
788
789
790 (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
791
792 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
793 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
794 |N/A|N/A|N/A|N/A|DI2_STATUS|DI2_FLAG|DI1_STATUS|DI1_FLAG
795
796 * Each bits shows which status has been trigger on this uplink.
797
798 **Example:**
799
800 00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
801
802 00000101: Means both DI1 and DI2 trigger are enabled.
803
804
805 (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
806
807 Downlink command to poll MOD6 status:
808
809 **AB 06**
810
811 When device got this command, it will send the MOD6 payload.
812
813
814 === 3.3.7 Payload Decoder ===
815
816 (((
817
818
819 **Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
820 )))
821
822
823 == 3.4 ​Configure LT via AT or Downlink ==
824
825
826 (((
827 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
828 )))
829
830 (((
831 (((
832 There are two kinds of Commands:
833 )))
834 )))
835
836 * (% 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]]
837
838 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
839
840 === 3.4.1 Common Commands ===
841
842
843 (((
844 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]]
845 )))
846
847
848 === 3.4.2 Sensor related commands ===
849
850 ==== 3.4.2.1 Set Transmit Interval ====
851
852
853 Set device uplink interval.
854
855 * (% style="color:#037691" %)**AT Command:**
856
857 (% style="color:blue" %)**AT+TDC=N **
858
859
860 **Example: **AT+TDC=30000. Means set interval to 30 seconds
861
862
863 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
864
865 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
866
867
868
869 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
870
871
872 Set work mode.
873
874 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+MOD=N  **
875
876 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
877
878 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
879
880 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
881
882
883
884 ==== 3.4.2.3 Poll an uplink ====
885
886
887 * (% style="color:#037691" %)**AT Command:**(%%) There is no AT Command to poll uplink
888
889 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
890
891 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
892
893 **Example**: 0x08FF, ask device to send an Uplink
894
895
896
897 ==== 3.4.2.4 Enable Trigger Mode ====
898
899
900 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
901
902 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
903
904 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
905
906 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
907
908
909 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
910
911 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
912
913
914
915 ==== 3.4.2.5 Poll trigger settings ====
916
917
918 Poll trigger settings
919
920 * (% style="color:#037691" %)**AT Command:**
921
922 There is no AT Command for this feature.
923
924 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
925
926 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
927
928
929
930 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
931
932
933 Enable Disable DI1/DI2/DI2 as trigger,
934
935 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
936
937 **Example:** AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
938
939
940 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
941
942 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
943
944
945
946 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
947
948
949 Set DI1 or DI3(for LT-33222-L) trigger.
950
951 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+TRIG1=a,b**
952
953 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
954
955 (% style="color:red" %)**b :** (%%)delay timing.
956
957 **Example:** AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
958
959
960 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
961
962 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
963
964
965
966 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
967
968
969 Set DI2 trigger.
970
971 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+TRIG2=a,b**
972
973 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
974
975 (% style="color:red" %)**b :** (%%)delay timing.
976
977 **Example:** AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
978
979
980 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
981
982 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
983
984
985
986 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
987
988
989 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
990
991 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+ACLIM**
992
993 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
994
995 (% 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"]]
996
997
998
999 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
1000
1001
1002 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
1003
1004 * (% style="color:#037691" %)**AT Command**(%%): (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
1005
1006 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
1007
1008 (% 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"]]
1009
1010
1011
1012 ==== 3.4.2.11 Trigger – Set minimum interval ====
1013
1014
1015 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
1016
1017 * (% style="color:#037691" %)**AT Command**(%%): (% style="color:blue" %)**AT+ATDC=5        ** ~/~/ (%%)Device won't response the second trigger within 5 minute after the first trigger.
1018
1019 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
1020
1021 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
1022
1023 (((
1024 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
1025 )))
1026
1027
1028
1029 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1030
1031
1032 * (% style="color:#037691" %)**AT Command**
1033
1034 There is no AT Command to control Digital Output
1035
1036
1037 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1038
1039 (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1040
1041 (((
1042 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1043 )))
1044
1045 (((
1046 01: Low,  00: High ,  11: No action
1047
1048 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
1049 |(% 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**
1050 |02  01  00  11|Low|High|No Action
1051 |02  00  11  01|High|No Action|Low
1052 |02  11  01  00|No Action|Low|High
1053 )))
1054
1055 (((
1056 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1057 )))
1058
1059 (((
1060 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1061 )))
1062
1063
1064
1065 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1066
1067
1068 * (% style="color:#037691" %)**AT Command**
1069
1070 There is no AT Command to control Digital Output
1071
1072
1073 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1074
1075 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1076
1077
1078 This is to control the digital output time of DO pin. Include four bytes:
1079
1080 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1081
1082 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1083
1084 01: DO pins will change back to original state after timeout.
1085
1086 00: DO pins will change to an inverter state after timeout 
1087
1088
1089 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1090
1091 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1092 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1093 |0x01|DO1 set to low
1094 |0x00|DO1 set to high
1095 |0x11|DO1 NO Action
1096
1097 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1098
1099 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1100 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1101 |0x01|DO2 set to low
1102 |0x00|DO2 set to high
1103 |0x11|DO2 NO Action
1104
1105 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1106
1107 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1108 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1109 |0x01|DO3 set to low
1110 |0x00|DO3 set to high
1111 |0x11|DO3 NO Action
1112
1113 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:(%%) Latching time. Unit: ms
1114
1115
1116 (% style="color:red" %)**Note: **
1117
1118 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1119
1120 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1121
1122 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1123
1124
1125 **Example payload:**
1126
1127 **~1. A9 01 01 01 01 07 D0**
1128
1129 DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
1130
1131 **2. A9 01 00 01 11 07 D0**
1132
1133 DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
1134
1135 **3. A9 00 00 00 00 07 D0**
1136
1137 DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
1138
1139 **4. A9 00 11 01 00 07 D0**
1140
1141 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
1142
1143
1144
1145 ==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1146
1147
1148 * (% style="color:#037691" %)**AT Command:**
1149
1150 There is no AT Command to control Relay Output
1151
1152
1153 * (% style="color:#037691" %)**Downlink Payload (prefix 0x03):**
1154
1155 (% style="color:blue" %)**0x03 aa bb     ** (%%)~/~/ Set RO1/RO2 output
1156
1157
1158 (((
1159 If payload = 0x030100, it means set RO1 to close and RO2 to open.
1160 )))
1161
1162 (((
1163 01: Close ,  00: Open , 11: No action
1164
1165 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1166 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO2**
1167 |03  00  11|Open|No Action
1168 |03  01  11|Close|No Action
1169 |03  11  00|No Action|Open
1170 |03  11  01|No Action|Close
1171 |03  00  00|Open|Open
1172 |03  01  01|Close|Close
1173 |03  01  00|Close|Open
1174 |03  00  01|Open|Close
1175 )))
1176
1177 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1178
1179
1180
1181 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1182
1183
1184 * (% style="color:#037691" %)**AT Command:**
1185
1186 There is no AT Command to control Relay Output
1187
1188
1189 * (% style="color:#037691" %)**Downlink Payload (prefix 0x05):**
1190
1191 (% style="color:blue" %)**0x05 aa bb cc dd     ** (%%)~/~/ Set RO1/RO2 relay with time control
1192
1193
1194 This is to control the relay output time of relay. Include four bytes:
1195
1196 (% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
1197
1198 (% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
1199
1200 01: Relays will change back to original state after timeout.
1201
1202 00: Relays will change to an inverter state after timeout
1203
1204
1205 (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1206
1207 [[image:image-20221008095908-1.png||height="364" width="564"]]
1208
1209
1210 (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1211
1212
1213 (% style="color:red" %)**Note:**
1214
1215 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1216
1217 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1218
1219
1220 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1221
1222
1223 **Example payload:**
1224
1225 **~1. 05 01 11 07 D0**
1226
1227 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1228
1229 **2. 05 01 10 07 D0**
1230
1231 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1232
1233 **3. 05 00 01 07 D0**
1234
1235 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1236
1237 **4. 05 00 00 07 D0**
1238
1239 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1240
1241
1242
1243 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1244
1245
1246 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1247
1248 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1249
1250 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1251
1252 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1253
1254
1255
1256 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1257
1258
1259 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1260
1261 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1262
1263 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1264
1265
1266 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1267
1268 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1269
1270
1271
1272 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1273
1274
1275 Clear counting for counting mode
1276
1277 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+CLRCOUNT         **(%%) ~/~/ clear all counting
1278
1279 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1280
1281 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1282
1283
1284
1285 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1286
1287
1288 * (% style="color:#037691" %)**AT Command:**
1289
1290 (% 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)
1291
1292
1293 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1294
1295 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1296
1297 (((
1298 range: aa bb cc:0 to 16777215,  (unit:second)
1299 )))
1300
1301
1302
1303 ==== 3.4.2.20 Reset save RO DO state ====
1304
1305
1306 * (% style="color:#037691" %)**AT Command:**
1307
1308 (% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1309
1310 (% 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.
1311
1312
1313 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1314
1315 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1316
1317
1318
1319 ==== 3.4.2.21 Encrypted payload ====
1320
1321
1322 * (% style="color:#037691" %)**AT Command:**
1323
1324 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1325
1326 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1327
1328
1329
1330 ==== 3.4.2.22 Get sensor value ====
1331
1332
1333 * (% style="color:#037691" %)**AT Command:**
1334
1335 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1336
1337 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1338
1339
1340
1341 ==== 3.4.2.23 Resets the downlink packet count ====
1342
1343
1344 * (% style="color:#037691" %)**AT Command:**
1345
1346 (% 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)
1347
1348 (% 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.
1349
1350
1351
1352 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1353
1354
1355 * (% style="color:#037691" %)**AT Command:**
1356
1357 (% 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)
1358
1359 (% 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.
1360
1361
1362 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1363
1364 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1365
1366
1367
1368 ==== 3.4.2.25 Copy downlink to uplink ====
1369
1370
1371 * (% style="color:#037691" %)**AT Command**(%%)**:**
1372
1373 (% 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.
1374
1375 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.
1376
1377
1378 [[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"]]
1379
1380 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1381
1382
1383
1384 [[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"]]
1385
1386 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1387
1388
1389
1390 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1391
1392
1393 * (((
1394 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1395
1396 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1397
1398
1399 )))
1400
1401 **Example：**
1402
1403 [[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"]]
1404
1405
1406 == 3.5 Integrate with Mydevice ==
1407
1408
1409 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:
1410
1411 (((
1412 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1413 )))
1414
1415 (((
1416 (% 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:
1417
1418
1419 )))
1420
1421 [[image:image-20220719105525-1.png||height="377" width="677"]]
1422
1423
1424
1425 [[image:image-20220719110247-2.png||height="388" width="683"]]
1426
1427
1428 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1429
1430 (% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L) and add DevEUI.(% style="display:none" %)
1431
1432 Search under The things network
1433
1434 [[image:1653356838789-523.png||height="337" width="740"]]
1435
1436
1437
1438 After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1439
1440 [[image:image-20220524094909-1.png||height="335" width="729"]]
1441
1442
1443 [[image:image-20220524094909-2.png||height="337" width="729"]]
1444
1445
1446 [[image:image-20220524094909-3.png||height="338" width="727"]]
1447
1448
1449 [[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1450
1451
1452 [[image:image-20220524094909-5.png||height="341" width="734"]]
1453
1454
1455 == 3.6 Interface Detail ==
1456
1457 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1458
1459
1460 Support NPN Type sensor
1461
1462 [[image:1653356991268-289.png]]
1463
1464
1465 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1466
1467
1468 (((
1469 The DI port of LT-22222-L can support **NPN** or **PNP** or **Dry Contact** output sensor.
1470 )))
1471
1472 (((
1473 (((
1474 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). (% class="mark" %)When there is active current pass NEC2501 pin1 to pin2. The DI will be active high and DI LED status will change.
1475
1476
1477 )))
1478 )))
1479
1480 [[image:1653357170703-587.png]]
1481
1482 (((
1483 (((
1484 When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1485 )))
1486 )))
1487
1488 (((
1489
1490 )))
1491
1492 (((
1493 (% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1494 )))
1495
1496 (((
1497 This type of sensor will output a low signal GND when active.
1498 )))
1499
1500 * (((
1501 Connect sensor's output to DI1-
1502 )))
1503 * (((
1504 Connect sensor's VCC to DI1+.
1505 )))
1506
1507 (((
1508 So when sensor active, the current between NEC2501 pin1 and pin2 is：
1509 )))
1510
1511 (((
1512 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1513 )))
1514
1515 (((
1516 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.
1517 )))
1518
1519 (((
1520
1521 )))
1522
1523 (((
1524 (% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1525 )))
1526
1527 (((
1528 This type of sensor will output a high signal (example 24v) when active.
1529 )))
1530
1531 * (((
1532 Connect sensor's output to DI1+
1533 )))
1534 * (((
1535 Connect sensor's GND DI1-.
1536 )))
1537
1538 (((
1539 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1540 )))
1541
1542 (((
1543 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1544 )))
1545
1546 (((
1547 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.
1548 )))
1549
1550 (((
1551
1552 )))
1553
1554 (((
1555 (% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1556 )))
1557
1558 (((
1559 Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1560 )))
1561
1562 * (((
1563 Connect sensor's output to DI1+ with a serial 50K resistor
1564 )))
1565 * (((
1566 Connect sensor's GND DI1-.
1567 )))
1568
1569 (((
1570 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1571 )))
1572
1573 (((
1574 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1575 )))
1576
1577 (((
1578 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.
1579 )))
1580
1581
1582 (% style="color:blue" %)**Example4**(%%): Connect to Dry Contact sensor
1583
1584 From above DI ports circuit, we can see that active the photocoupler will need to have a voltage difference between DI+ and DI- port. While the Dry Contact sensor is a passive component which can't provide this voltage difference.
1585
1586 To detect a Dry Contact, we can provide a power source to one pin of the Dry Contact. Below is a reference connection.
1587
1588 [[image:image-20230616235145-1.png]]
1589
1590
1591
1592 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1593
1594
1595 (% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1596
1597 (% style="color:red" %)**Note: DO pins go to float when device is power off.**
1598
1599 [[image:1653357531600-905.png]]
1600
1601
1602 === 3.6.4 Analog Input Interface ===
1603
1604
1605 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:
1606
1607
1608 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1609
1610 [[image:1653357592296-182.png]]
1611
1612 Example to connect a 4~~20mA sensor
1613
1614 We take the wind speed sensor as an example for reference only.
1615
1616
1617 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1618
1619 (% style="color:red" %)**Red:  12~~24v**
1620
1621 (% style="color:#ffc000" %)**Yellow:  4~~20mA**
1622
1623 **Black:  GND**
1624
1625 **Connection diagram:**
1626
1627 [[image:1653357640609-758.png]]
1628
1629 [[image:1653357648330-671.png||height="155" width="733"]]
1630
1631
1632 Example connected to a regulated power supply to measure voltage
1633
1634 [[image:image-20230608101532-1.png||height="606" width="447"]]
1635
1636 [[image:image-20230608101608-2.jpeg||height="379" width="284"]]
1637
1638 [[image:image-20230608101722-3.png||height="102" width="1139"]]
1639
1640
1641 (% style="color:blue; font-weight:bold" %)**Specifications of the regulated power**(%%) (% style="color:blue" %)**:**
1642
1643 (% style="color:red" %)**Red:  12~~24v**
1644
1645 **Black:  GND**
1646
1647
1648 === 3.6.5 Relay Output ===
1649
1650
1651 (((
1652 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:
1653
1654 **Note**: RO pins go to Open(NO) when device is power off.
1655 )))
1656
1657 [[image:image-20220524100215-9.png]]
1658
1659
1660 [[image:image-20220524100215-10.png||height="382" width="723"]]
1661
1662
1663 == 3.7 LEDs Indicators ==
1664
1665
1666 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1667 |(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**LEDs**|(% style="background-color:#d9e2f3; color:#0070c0; width:470px" %)**Feature**
1668 |**PWR**|Always on if there is power
1669 |**SYS**|(((
1670 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.
1671 )))
1672 |**TX**|(((
1673 (((
1674 Device boot: TX blinks 5 times.
1675 )))
1676
1677 (((
1678 Successful join network: TX ON for 5 seconds.
1679 )))
1680
1681 (((
1682 Transmit a LoRa packet: TX blinks once
1683 )))
1684 )))
1685 |**RX**|RX blinks once when receive a packet.
1686 |**DO1**|
1687 |**DO2**|
1688 |**DO3**|
1689 |**DI2**|(((
1690 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1691 )))
1692 |**DI2**|(((
1693 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1694 )))
1695 |**DI2**|(((
1696 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1697 )))
1698 |**RO1**|
1699 |**RO2**|
1700
1701 = 4. Use AT Command =
1702
1703 == 4.1 Access AT Command ==
1704
1705
1706 (((
1707 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.
1708 )))
1709
1710 (((
1711
1712 )))
1713
1714 [[image:1653358238933-385.png]]
1715
1716
1717 (((
1718 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:
1719 )))
1720
1721 [[image:1653358355238-883.png]]
1722
1723
1724 (((
1725 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/]]
1726 )))
1727
1728 (((
1729 AT+<CMD>?        : Help on <CMD>
1730 )))
1731
1732 (((
1733 AT+<CMD>         : Run <CMD>
1734 )))
1735
1736 (((
1737 AT+<CMD>=<value> : Set the value
1738 )))
1739
1740 (((
1741 AT+<CMD>=?       :  Get the value
1742 )))
1743
1744 (((
1745 ATZ: Trig a reset of the MCU
1746 )))
1747
1748 (((
1749 AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1750 )))
1751
1752 (((
1753 AT+DEUI: Get or Set the Device EUI
1754 )))
1755
1756 (((
1757 AT+DADDR: Get or Set the Device Address
1758 )))
1759
1760 (((
1761 AT+APPKEY: Get or Set the Application Key
1762 )))
1763
1764 (((
1765 AT+NWKSKEY: Get or Set the Network Session Key
1766 )))
1767
1768 (((
1769 AT+APPSKEY:  Get or Set the Application Session Key
1770 )))
1771
1772 (((
1773 AT+APPEUI:  Get or Set the Application EUI
1774 )))
1775
1776 (((
1777 AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1778 )))
1779
1780 (((
1781 AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1782 )))
1783
1784 (((
1785 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1786 )))
1787
1788 (((
1789 AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1790 )))
1791
1792 (((
1793 AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1794 )))
1795
1796 (((
1797 AT+RX2FQ: Get or Set the Rx2 window frequency
1798 )))
1799
1800 (((
1801 AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1802 )))
1803
1804 (((
1805 AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1806 )))
1807
1808 (((
1809 AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1810 )))
1811
1812 (((
1813 AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1814 )))
1815
1816 (((
1817 AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1818 )))
1819
1820 (((
1821 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1822 )))
1823
1824 (((
1825 AT+NWKID: Get or Set the Network ID
1826 )))
1827
1828 (((
1829 AT+FCU: Get or Set the Frame Counter Uplink
1830 )))
1831
1832 (((
1833 AT+FCD: Get or Set the Frame Counter Downlink
1834 )))
1835
1836 (((
1837 AT+CLASS: Get or Set the Device Class
1838 )))
1839
1840 (((
1841 AT+JOIN: Join network
1842 )))
1843
1844 (((
1845 AT+NJS: Get OTAA Join Status
1846 )))
1847
1848 (((
1849 AT+SENDB: Send hexadecimal data along with the application port
1850 )))
1851
1852 (((
1853 AT+SEND: Send text data along with the application port
1854 )))
1855
1856 (((
1857 AT+RECVB: Print last received data in binary format (with hexadecimal values)
1858 )))
1859
1860 (((
1861 AT+RECV: Print last received data in raw format
1862 )))
1863
1864 (((
1865 AT+VER:  Get current image version and Frequency Band
1866 )))
1867
1868 (((
1869 AT+CFM: Get or Set the confirmation mode (0-1)
1870 )))
1871
1872 (((
1873 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1874 )))
1875
1876 (((
1877 AT+SNR: Get the SNR of the last received packet
1878 )))
1879
1880 (((
1881 AT+RSSI: Get the RSSI of the last received packet
1882 )))
1883
1884 (((
1885 AT+TDC: Get or set the application data transmission interval in ms
1886 )))
1887
1888 (((
1889 AT+PORT: Get or set the application port
1890 )))
1891
1892 (((
1893 AT+DISAT: Disable AT commands
1894 )))
1895
1896 (((
1897 AT+PWORD: Set password, max 9 digits
1898 )))
1899
1900 (((
1901 AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1902 )))
1903
1904 (((
1905 AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1906 )))
1907
1908 (((
1909 AT+CFG: Print all settings
1910 )))
1911
1912
1913 == 4.2 Common AT Command Sequence ==
1914
1915 === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1916
1917 (((
1918
1919
1920 (((
1921 (% style="color:blue" %)**If device has not joined network yet:**
1922 )))
1923 )))
1924
1925 (((
1926 (% style="background-color:#dcdcdc" %)**123456**
1927 )))
1928
1929 (((
1930 (% style="background-color:#dcdcdc" %)**AT+FDR**
1931 )))
1932
1933 (((
1934 (% style="background-color:#dcdcdc" %)**123456**
1935 )))
1936
1937 (((
1938 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1939 )))
1940
1941 (((
1942 (% style="background-color:#dcdcdc" %)**ATZ**
1943 )))
1944
1945
1946 (((
1947 (% style="color:blue" %)**If device already joined network:**
1948 )))
1949
1950 (((
1951 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1952 )))
1953
1954 (((
1955 (% style="background-color:#dcdcdc" %)**ATZ**
1956 )))
1957
1958
1959 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1960
1961 (((
1962
1963
1964 (((
1965 (% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1966 )))
1967 )))
1968
1969 (((
1970 (% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
1971 )))
1972
1973 (((
1974 (% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1975 )))
1976
1977 (((
1978 (% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
1979 )))
1980
1981 (((
1982 (% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
1983 )))
1984
1985 (((
1986 (% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
1987 )))
1988
1989 (((
1990 (% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
1991 )))
1992
1993 (((
1994 (% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
1995 )))
1996
1997 (((
1998 (% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
1999 )))
2000
2001 (((
2002 (% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
2003 )))
2004
2005 (((
2006 (% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
2007 )))
2008
2009 (((
2010 (% 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.
2011 )))
2012
2013 (((
2014 (% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
2015
2016
2017 )))
2018
2019 (((
2020 (% style="color:red" %)**Note:**
2021 )))
2022
2023 (((
2024 **~1. Make sure the device is set to ABP mode in the IoT Server.**
2025
2026 **2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
2027
2028 **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?
2029 dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
2030
2031 **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.**
2032
2033
2034 )))
2035
2036 (((
2037 [[image:1653359097980-169.png||height="188" width="729"]]
2038 )))
2039
2040 (((
2041
2042 )))
2043
2044 === 4.2.3 Change to Class A ===
2045
2046
2047 (((
2048 (% style="color:blue" %)**If sensor JOINED:**
2049
2050 (% style="background-color:#dcdcdc" %)**AT+CLASS=A
2051 ATZ**
2052 )))
2053
2054
2055 = 5. Case Study =
2056
2057 == 5.1 Counting how many objects pass in Flow Line ==
2058
2059
2060 Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
2061
2062
2063 = 6. FAQ =
2064
2065 == 6.1 How to upgrade the image? ==
2066
2067
2068 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
2069
2070 * Support new features
2071 * For bug fix
2072 * Change LoRaWAN bands.
2073
2074 Below shows the hardware connection for how to upload an image to the LT:
2075
2076 [[image:1653359603330-121.png]]
2077
2078
2079 (((
2080 (% 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]].
2081 (% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AACrbrDN0AqLHbBat0ViWx5Da/LT-22222-L/Firmware?dl=0&subfolder_nav_tracking=1]].
2082 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
2083
2084
2085 (((
2086 (% style="color:blue" %)**For LT-22222-L**(%%):
2087 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.
2088 )))
2089
2090
2091 )))
2092
2093 [[image:image-20220524103407-12.png]]
2094
2095
2096 [[image:image-20220524103429-13.png]]
2097
2098
2099 [[image:image-20220524104033-15.png]]
2100
2101
2102 (% 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:
2103
2104
2105 [[image:1653360054704-518.png||height="186" width="745"]]
2106
2107
2108 (((
2109 (((
2110 == 6.2 How to change the LoRa Frequency Bands/Region? ==
2111
2112
2113 )))
2114 )))
2115
2116 (((
2117 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2118 )))
2119
2120 (((
2121
2122
2123 == 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2124
2125
2126 )))
2127
2128 (((
2129 (((
2130 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2131 )))
2132 )))
2133
2134 (((
2135 (((
2136 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2137
2138
2139 )))
2140 )))
2141
2142 (((
2143 (% 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.
2144
2145
2146 )))
2147
2148 (((
2149 [[image:1653360231087-571.png||height="401" width="727"]]
2150
2151
2152 )))
2153
2154 (((
2155 (% 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.**
2156 )))
2157
2158
2159
2160 (((
2161 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2162
2163
2164 )))
2165
2166 (((
2167 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2168 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2169 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2170 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2171 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2172 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2173 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2174 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2175 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2176 )))
2177
2178
2179 (((
2180 As shown in below:
2181 )))
2182
2183 [[image:1653360498588-932.png||height="485" width="726"]]
2184
2185
2186 == 6.4 How to change the uplink interval？ ==
2187
2188
2189 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/]]
2190
2191
2192 == 6.5 Can I see counting event in Serial? ==
2193
2194
2195 (((
2196 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.
2197
2198
2199 == 6.6 Can i use point to point communication for LT-22222-L? ==
2200
2201
2202 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]].
2203
2204
2205 )))
2206
2207 (((
2208 == 6.7 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2209
2210
2211 If the device is not shut down, but directly powered off.
2212
2213 It will default that this is a power-off state.
2214
2215 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2216
2217 After restart, the status before power failure will be read from flash.
2218
2219
2220 == 6.8 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2221
2222
2223 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2224
2225
2226 [[image:image-20221006170630-1.png||height="610" width="945"]]
2227
2228
2229 == 6.9 Can LT22222-L save RO state? ==
2230
2231
2232 Firmware version needs to be no less than 1.6.0.
2233
2234
2235 = 7. Trouble Shooting =
2236 )))
2237
2238 (((
2239 (((
2240 == 7.1 Downlink doesn't work, how to solve it? ==
2241
2242
2243 )))
2244 )))
2245
2246 (((
2247 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2248 )))
2249
2250 (((
2251
2252
2253 == 7.2 Have trouble to upload image. ==
2254
2255
2256 )))
2257
2258 (((
2259 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2260 )))
2261
2262 (((
2263
2264
2265 == 7.3 Why I can't join TTN in US915 /AU915 bands? ==
2266
2267
2268 )))
2269
2270 (((
2271 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2272 )))
2273
2274
2275 = 8. Order Info =
2276
2277
2278 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2279
2280 (% style="color:#4f81bd" %)**XXX:**
2281
2282 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2283 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2284 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2285 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2286 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2287 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2288 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2289 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2290 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2291
2292 = 9. Packing Info =
2293
2294
2295 **Package Includes**:
2296
2297 * LT-22222-L I/O Controller x 1
2298 * Stick Antenna for LoRa RF part x 1
2299 * Bracket for controller x1
2300 * Program cable x 1
2301
2302 **Dimension and weight**:
2303
2304 * Device Size: 13.5 x 7 x 3 cm
2305 * Device Weight: 105g
2306 * Package Size / pcs : 14.5 x 8 x 5 cm
2307 * Weight / pcs : 170g
2308
2309 = 10. Support =
2310
2311
2312 * (((
2313 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.
2314 )))
2315 * (((
2316 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]]
2317
2318
2319
2320 )))
2321
2322 = 11. Reference​​​​​ =
2323
2324
2325 * 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]]
2326 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2327 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2328
2329