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Version 126.11 by Xiaoling on 2023/06/19 15:59
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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
209 == 1.5 Hardware Variants ==
210
211
212 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
213 |(% 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**
214 |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
215 (% style="text-align:center" %)
216 [[image:image-20230424115112-1.png||height="106" width="58"]]
217 )))|(% style="width:334px" %)(((
218 * 2 x Digital Input (Bi-direction)
219 * 2 x Digital Output
220 * 2 x Relay Output (5A@250VAC / 30VDC)
221 * 2 x 0~~20mA Analog Input (res:0.01mA)
222 * 2 x 0~~30V Analog Input (res:0.01v)
223 * 1 x Counting Port
224 )))
225
226 = 2. Power ON Device =
227
228
229 (((
230 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.
231 )))
232
233 (((
234 PWR will on when device is properly powered.
235
236
237 )))
238
239 [[image:1653297104069-180.png]]
240
241
242 = 3. Operation Mode =
243
244 == 3.1 How it works? ==
245
246
247 (((
248 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. 
249 )))
250
251 (((
252 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.
253 )))
254
255
256 == 3.2 Example to join LoRaWAN network ==
257
258
259 (((
260 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. 
261
262
263 )))
264
265 [[image:image-20220523172350-1.png||height="266" width="864"]]
266
267
268 (((
269 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:
270
271
272 )))
273
274 (((
275 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
276 )))
277
278 (((
279 Each LT is shipped with a sticker with the default device EUI as below:
280 )))
281
282 [[image:image-20230425173427-2.png||height="246" width="530"]]
283
284
285 Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
286
287 **Add APP EUI in the application.**
288
289 [[image:1653297955910-247.png||height="321" width="716"]]
290
291
292 **Add APP KEY and DEV EUI**
293
294 [[image:1653298023685-319.png]]
295
296
297
298 (((
299 (% 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.
300
301
302 )))
303
304 [[image:1653298044601-602.png||height="405" width="709"]]
305
306
307 == 3.3 Uplink Payload ==
308
309
310 There are five working modes + one interrupt mode on LT for different type application:
311
312 * (% style="color:blue" %)**MOD1**(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
313
314 * (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO
315
316 * (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO
317
318 * (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
319
320 * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
321
322 * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
323
324 === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
325
326
327 (((
328 The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default. (% style="display:none" %)
329
330 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
331 |(% 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**
332 |Value|(((
333 AVI1 voltage
334 )))|(((
335 AVI2 voltage
336 )))|(((
337 ACI1 Current
338 )))|(((
339 ACI2 Current
340 )))|DIDORO*|(((
341 Reserve
342 )))|MOD
343 )))
344
345 (((
346 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
347
348 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
349 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
350 |RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
351 )))
352
353 * RO is for relay. ROx=1 : close，ROx=0 always open.
354 * DI is for digital input. DIx=1: high or float, DIx=0: low.
355 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
356
357 (% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
358
359 For example if payload is: [[image:image-20220523175847-2.png]]
360
361
362 **The value for the interface is:  **
363
364 AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
365
366 AVI2 channel voltage is 0x04AC/1000=1.196V
367
368 ACI1 channel current is 0x1310/1000=4.880mA
369
370 ACI2 channel current is 0x1300/1000=4.864mA
371
372 The last byte 0xAA= 10101010(B) means
373
374 * [1] RO1 relay channel is close and the RO1 LED is ON.
375 * [0] RO2 relay channel is open and RO2 LED is OFF;
376
377 **LT22222-L:**
378
379 * [1] DI2 channel is high input and DI2 LED is ON;
380 * [0] DI1 channel is low input;
381
382 * [0] DO3 channel output state
383 ** DO3 is float in case no load between DO3 and V+.;
384 ** DO3 is high in case there is load between DO3 and V+.
385 ** DO3 LED is off in both case
386 * [1] DO2 channel output is low and DO2 LED is ON.
387 * [0] DO1 channel output state
388 ** DO1 is float in case no load between DO1 and V+.;
389 ** DO1 is high in case there is load between DO1 and V+.
390 ** DO1 LED is off in both case
391
392
393
394 === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
395
396
397 (((
398 **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
399 )))
400
401 (((
402 Total : 11 bytes payload
403
404 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
405 |(% 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**
406 |Value|COUNT1|COUNT2 |DIDORO*|(((
407 Reserve
408 )))|MOD
409 )))
410
411 (((
412 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
413
414 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
415 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
416 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
417
418 RO is for relay. ROx=1 : close，ROx=0 always open.
419 )))
420
421 * FIRST: Indicate this is the first packet after join network.
422 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
423
424 (((
425 (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
426 )))
427
428 (((
429 **To use counting mode, please run:**
430 )))
431
432
433 (((
434 **AT+MOD=2**
435 )))
436
437 (((
438 **ATZ**
439 )))
440
441
442 (((
443
444
445 (% style="color:#4f81bd" %)**AT Commands for counting:**
446 )))
447
448 (((
449 **For LT22222-L:**
450
451 (% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
452
453 (% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
454
455 (% style="color:blue" %)**AT+TRIG2=0,100**(%%)**  (set DI2 port to trigger on low level, valid signal is 100ms) **
456
457 (% style="color:blue" %)**AT+TRIG2=1,100**(%%)**  (set DI2 port to trigger on high level, valid signal is 100ms ) **
458
459 (% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set COUNT1 value to 60)**
460
461 (% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set COUNT2 value to 60)**
462 )))
463
464
465 === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
466
467
468 **LT22222-L**: This mode the DI1 is used as a counting pin.
469
470 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
471 |(% 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**
472 |Value|COUNT1|(((
473 ACI1 Current
474 )))|(((
475 ACI2 Current
476 )))|DIDORO*|Reserve|MOD
477
478 (((
479 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
480
481 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
482 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
483 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
484 )))
485
486 * RO is for relay. ROx=1 : close，ROx=0 always open.
487 * FIRST: Indicate this is the first packet after join network.
488 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
489
490 (((
491 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
492 )))
493
494
495 (((
496 **To use counting mode, please run:**
497 )))
498
499 (((
500 (% class="box infomessage" %)
501 (((
502 **AT+MOD=3**
503
504 **ATZ**
505 )))
506 )))
507
508
509 (((
510 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
511 )))
512
513
514 === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
515
516
517 (((
518 **LT22222-L**: This mode the DI1 is used as a counting pin.
519 )))
520
521 (((
522 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.
523
524 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
525 |(% 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**
526 |Value|COUNT1|AVI1 Counting|DIDORO*|(((
527 Reserve
528 )))|MOD
529 )))
530
531 (((
532 (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
533
534 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
535 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
536 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
537 )))
538
539 * RO is for relay. ROx=1 : close，ROx=0 always open.
540 * FIRST: Indicate this is the first packet after join network.
541 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
542
543 (((
544 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
545 )))
546
547 (((
548
549
550 **To use this mode, please run:**
551 )))
552
553
554 (((
555 **AT+MOD=4**
556 )))
557
558 (((
559 **ATZ**
560 )))
561
562
563
564 (((
565 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
566 )))
567
568 (((
569 **Plus below command for AVI1 Counting:**
570
571 (% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
572
573 (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
574
575 (% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**  (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
576
577 (% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**  (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
578 )))
579
580
581 === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
582
583
584 **LT22222-L**: This mode the DI1 is used as a counting pin.
585
586 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
587 |(% 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**
588 |Value|(((
589 AVI1 voltage
590 )))|(((
591 AVI2 voltage
592 )))|(((
593 ACI1 Current
594 )))|COUNT1|DIDORO*|(((
595 Reserve
596 )))|MOD
597
598 (((
599 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
600
601 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
602 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
603 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
604 )))
605
606 * RO is for relay. ROx=1 : close，ROx=0 always open.
607 * FIRST: Indicate this is the first packet after join network.
608 * (((
609 DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
610 )))
611
612 (((
613 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
614 )))
615
616 (((
617
618
619 **To use this mode, please run:**
620 )))
621
622
623 (((
624 **AT+MOD=5**
625 )))
626
627 (((
628 **ATZ**
629 )))
630
631
632 (((
633 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
634 )))
635
636
637 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
638
639
640 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
641
642 For example, if user has configured below commands:
643
644 * **AT+MOD=1 ** **~-~->**  The normal working mode
645 * **AT+ADDMOD6=1**   **~-~->**  Enable trigger
646
647 LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
648
649 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
650 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.**
651
652 (% style="color:#037691" %)**AT Command to set Trigger Condition**:
653
654
655 (% style="color:#4f81bd" %)**Trigger base on voltage**:
656
657 Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
658
659
660 **Example:**
661
662 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)
663
664 AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
665
666
667
668 (% style="color:#4f81bd" %)**Trigger base on current**:
669
670 Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
671
672
673 **Example:**
674
675 AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
676
677
678
679 (% style="color:#4f81bd" %)**Trigger base on DI status**:
680
681 DI status trigger Flag.
682
683 Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
684
685
686 **Example:**
687
688 AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
689
690
691 (% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
692
693 Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
694
695 Format: AA xx yy1 yy1 yy2 yy2 yy3 yy3 yy4 yy4
696
697 AA: Code for this downlink Command:
698
699 xx: 0: Limit for AV1 and AV2;  1: limit for AC1 and AC2 ; 2 DI1, DI2 trigger enable/disable
700
701 yy1 yy1: AC1 or AV1 low limit or DI1/DI2 trigger status.
702
703 yy2 yy2: AC1 or AV1 high limit.
704
705 yy3 yy3: AC2 or AV2 low limit.
706
707 Yy4 yy4: AC2 or AV2 high limit.
708
709
710 **Example1**: AA 00 13 88 00 00 00 00 00 00
711
712 Same as AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
713
714
715 **Example2**: AA 02 01 00
716
717 Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
718
719
720
721 (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
722
723 MOD6 Payload : total 11 bytes payload
724
725 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
726 |(% 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**
727 |Value|(((
728 TRI_A FLAG
729 )))|(((
730 TRI_A Status
731 )))|(((
732 TRI_DI FLAG+STA
733 )))|Reserve|Enable/Disable MOD6|(((
734 MOD(6)
735 )))
736
737 (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
738
739 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
740 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
741 |(((
742 AV1_LOW
743 )))|(((
744 AV1_HIGH
745 )))|(((
746 AV2_LOW
747 )))|(((
748 AV2_HIGH
749 )))|(((
750 AC1_LOW
751 )))|(((
752 AC1_HIGH
753 )))|(((
754 AC2_LOW
755 )))|(((
756 AC2_HIGH
757 )))
758
759 * Each bits shows if the corresponding trigger has been configured.
760
761 **Example:**
762
763 10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
764
765
766 (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
767
768 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
769 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
770 |(((
771 AV1_LOW
772 )))|(((
773 AV1_HIGH
774 )))|(((
775 AV2_LOW
776 )))|(((
777 AV2_HIGH
778 )))|(((
779 AC1_LOW
780 )))|(((
781 AC1_HIGH
782 )))|(((
783 AC2_LOW
784 )))|(((
785 AC2_HIGH
786 )))
787
788 * Each bits shows which status has been trigger on this uplink.
789
790 **Example:**
791
792 10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
793
794
795 (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
796
797 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
798 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
799 |N/A|N/A|N/A|N/A|DI2_STATUS|DI2_FLAG|DI1_STATUS|DI1_FLAG
800
801 * Each bits shows which status has been trigger on this uplink.
802
803 **Example:**
804
805 00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
806
807 00000101: Means both DI1 and DI2 trigger are enabled.
808
809
810 (% style="color:#4f81bd" %)**Enable/Disable MOD6 **(%%): 0x01: MOD6 is enable. 0x00: MOD6 is disable.
811
812 Downlink command to poll MOD6 status:
813
814 **AB 06**
815
816 When device got this command, it will send the MOD6 payload.
817
818
819 === 3.3.7 Payload Decoder ===
820
821 (((
822
823
824 **Decoder for TTN/loraserver/ChirpStack**:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
825 )))
826
827
828 == 3.4 ​Configure LT via AT or Downlink ==
829
830
831 (((
832 User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
833 )))
834
835 (((
836 (((
837 There are two kinds of Commands:
838 )))
839 )))
840
841 * (% 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]]
842
843 * (% style="color:blue" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
844
845 === 3.4.1 Common Commands ===
846
847
848 (((
849 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]]
850 )))
851
852
853 === 3.4.2 Sensor related commands ===
854
855 ==== 3.4.2.1 Set Transmit Interval ====
856
857
858 Set device uplink interval.
859
860 * (% style="color:#037691" %)**AT Command:**
861
862 (% style="color:blue" %)**AT+TDC=N **
863
864
865 **Example: **AT+TDC=30000. Means set interval to 30 seconds
866
867
868 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
869
870 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
871
872
873
874 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
875
876
877 Set work mode.
878
879 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+MOD=N  **
880
881 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
882
883 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
884
885 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
886
887
888
889 ==== 3.4.2.3 Poll an uplink ====
890
891
892 * (% style="color:#037691" %)**AT Command:**(%%) There is no AT Command to poll uplink
893
894 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
895
896 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
897
898 **Example**: 0x08FF, ask device to send an Uplink
899
900
901
902 ==== 3.4.2.4 Enable Trigger Mode ====
903
904
905 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
906
907 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
908
909 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
910
911 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
912
913
914 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
915
916 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
917
918
919
920 ==== 3.4.2.5 Poll trigger settings ====
921
922
923 Poll trigger settings
924
925 * (% style="color:#037691" %)**AT Command:**
926
927 There is no AT Command for this feature.
928
929 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
930
931 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
932
933
934
935 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
936
937
938 Enable Disable DI1/DI2/DI2 as trigger,
939
940 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
941
942 **Example:** AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
943
944
945 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
946
947 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
948
949
950
951 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
952
953
954 Set DI1 or DI3(for LT-33222-L) trigger.
955
956 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+TRIG1=a,b**
957
958 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
959
960 (% style="color:red" %)**b :** (%%)delay timing.
961
962 **Example:** AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
963
964
965 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
966
967 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
968
969
970
971 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
972
973
974 Set DI2 trigger.
975
976 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+TRIG2=a,b**
977
978 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
979
980 (% style="color:red" %)**b :** (%%)delay timing.
981
982 **Example:** AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
983
984
985 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
986
987 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
988
989
990
991 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
992
993
994 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
995
996 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+ACLIM**
997
998 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
999
1000 (% 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"]]
1001
1002
1003
1004 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
1005
1006
1007 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
1008
1009 * (% style="color:#037691" %)**AT Command**(%%): (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
1010
1011 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
1012
1013 (% 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"]]
1014
1015
1016
1017 ==== 3.4.2.11 Trigger – Set minimum interval ====
1018
1019
1020 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
1021
1022 * (% 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.
1023
1024 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
1025
1026 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
1027
1028 (((
1029 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
1030 )))
1031
1032
1033
1034 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1035
1036
1037 * (% style="color:#037691" %)**AT Command**
1038
1039 There is no AT Command to control Digital Output
1040
1041
1042 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1043
1044 (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1045
1046 (((
1047 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1048 )))
1049
1050 (((
1051 01: Low,  00: High ,  11: No action
1052
1053 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
1054 |(% 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**
1055 |02  01  00  11|Low|High|No Action
1056 |02  00  11  01|High|No Action|Low
1057 |02  11  01  00|No Action|Low|High
1058 )))
1059
1060 (((
1061 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1062 )))
1063
1064 (((
1065 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1066 )))
1067
1068
1069
1070 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1071
1072
1073 * (% style="color:#037691" %)**AT Command**
1074
1075 There is no AT Command to control Digital Output
1076
1077
1078 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1079
1080 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1081
1082
1083 This is to control the digital output time of DO pin. Include four bytes:
1084
1085 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1086
1087 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1088
1089 01: DO pins will change back to original state after timeout.
1090
1091 00: DO pins will change to an inverter state after timeout 
1092
1093
1094 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1095
1096 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1097 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1098 |0x01|DO1 set to low
1099 |0x00|DO1 set to high
1100 |0x11|DO1 NO Action
1101
1102 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1103
1104 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1105 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1106 |0x01|DO2 set to low
1107 |0x00|DO2 set to high
1108 |0x11|DO2 NO Action
1109
1110 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1111
1112 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1113 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1114 |0x01|DO3 set to low
1115 |0x00|DO3 set to high
1116 |0x11|DO3 NO Action
1117
1118 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:(%%) Latching time. Unit: ms
1119
1120
1121 (% style="color:red" %)**Note: **
1122
1123 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1124
1125 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1126
1127 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1128
1129
1130 **Example payload:**
1131
1132 **~1. A9 01 01 01 01 07 D0**
1133
1134 DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
1135
1136 **2. A9 01 00 01 11 07 D0**
1137
1138 DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
1139
1140 **3. A9 00 00 00 00 07 D0**
1141
1142 DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
1143
1144 **4. A9 00 11 01 00 07 D0**
1145
1146 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
1147
1148
1149
1150 ==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1151
1152
1153 * (% style="color:#037691" %)**AT Command:**
1154
1155 There is no AT Command to control Relay Output
1156
1157
1158 * (% style="color:#037691" %)**Downlink Payload (prefix 0x03):**
1159
1160 (% style="color:blue" %)**0x03 aa bb     ** (%%)~/~/ Set RO1/RO2 output
1161
1162
1163 (((
1164 If payload = 0x030100, it means set RO1 to close and RO2 to open.
1165 )))
1166
1167 (((
1168 01: Close ,  00: Open , 11: No action
1169
1170 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1171 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO2**
1172 |03  00  11|Open|No Action
1173 |03  01  11|Close|No Action
1174 |03  11  00|No Action|Open
1175 |03  11  01|No Action|Close
1176 |03  00  00|Open|Open
1177 |03  01  01|Close|Close
1178 |03  01  00|Close|Open
1179 |03  00  01|Open|Close
1180 )))
1181
1182 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1183
1184
1185
1186 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1187
1188
1189 * (% style="color:#037691" %)**AT Command:**
1190
1191 There is no AT Command to control Relay Output
1192
1193
1194 * (% style="color:#037691" %)**Downlink Payload (prefix 0x05):**
1195
1196 (% style="color:blue" %)**0x05 aa bb cc dd     ** (%%)~/~/ Set RO1/RO2 relay with time control
1197
1198
1199 This is to control the relay output time of relay. Include four bytes:
1200
1201 (% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
1202
1203 (% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
1204
1205 01: Relays will change back to original state after timeout.
1206
1207 00: Relays will change to an inverter state after timeout
1208
1209
1210 (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1211
1212 [[image:image-20221008095908-1.png||height="364" width="564"]]
1213
1214
1215 (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1216
1217
1218 (% style="color:red" %)**Note:**
1219
1220 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1221
1222 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1223
1224
1225 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1226
1227
1228 **Example payload:**
1229
1230 **~1. 05 01 11 07 D0**
1231
1232 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1233
1234 **2. 05 01 10 07 D0**
1235
1236 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1237
1238 **3. 05 00 01 07 D0**
1239
1240 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1241
1242 **4. 05 00 00 07 D0**
1243
1244 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1245
1246
1247
1248 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1249
1250
1251 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1252
1253 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1254
1255 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1256
1257 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1258
1259
1260
1261 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1262
1263
1264 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1265
1266 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1267
1268 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1269
1270
1271 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1272
1273 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1274
1275
1276
1277 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1278
1279
1280 Clear counting for counting mode
1281
1282 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+CLRCOUNT         **(%%) ~/~/ clear all counting
1283
1284 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1285
1286 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1287
1288
1289
1290 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1291
1292
1293 * (% style="color:#037691" %)**AT Command:**
1294
1295 (% 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)
1296
1297
1298 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1299
1300 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1301
1302 (((
1303 range: aa bb cc:0 to 16777215,  (unit:second)
1304 )))
1305
1306
1307
1308 ==== 3.4.2.20 Reset save RO DO state ====
1309
1310
1311 * (% style="color:#037691" %)**AT Command:**
1312
1313 (% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1314
1315 (% 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.
1316
1317
1318 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1319
1320 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1321
1322
1323
1324 ==== 3.4.2.21 Encrypted payload ====
1325
1326
1327 * (% style="color:#037691" %)**AT Command:**
1328
1329 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1330
1331 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1332
1333
1334
1335 ==== 3.4.2.22 Get sensor value ====
1336
1337
1338 * (% style="color:#037691" %)**AT Command:**
1339
1340 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1341
1342 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1343
1344
1345
1346 ==== 3.4.2.23 Resets the downlink packet count ====
1347
1348
1349 * (% style="color:#037691" %)**AT Command:**
1350
1351 (% 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)
1352
1353 (% 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.
1354
1355
1356
1357 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1358
1359
1360 * (% style="color:#037691" %)**AT Command:**
1361
1362 (% 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)
1363
1364 (% 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.
1365
1366
1367 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1368
1369 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1370
1371
1372
1373 ==== 3.4.2.25 Copy downlink to uplink ====
1374
1375
1376 * (% style="color:#037691" %)**AT Command**(%%)**:**
1377
1378 (% 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.
1379
1380 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.
1381
1382
1383 [[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"]]
1384
1385 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1386
1387
1388
1389 [[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"]]
1390
1391 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1392
1393
1394
1395 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1396
1397
1398 * (((
1399 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1400
1401 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1402
1403
1404 )))
1405
1406 **Example：**
1407
1408 [[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"]]
1409
1410
1411 == 3.5 Integrate with Mydevice ==
1412
1413
1414 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:
1415
1416 (((
1417 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1418 )))
1419
1420 (((
1421 (% 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:
1422
1423
1424 )))
1425
1426 [[image:image-20220719105525-1.png||height="377" width="677"]]
1427
1428
1429
1430 [[image:image-20220719110247-2.png||height="388" width="683"]]
1431
1432
1433 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1434
1435 (% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L) and add DevEUI.(% style="display:none" %)
1436
1437 Search under The things network
1438
1439 [[image:1653356838789-523.png||height="337" width="740"]]
1440
1441
1442
1443 After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1444
1445 [[image:image-20220524094909-1.png||height="335" width="729"]]
1446
1447
1448 [[image:image-20220524094909-2.png||height="337" width="729"]]
1449
1450
1451 [[image:image-20220524094909-3.png||height="338" width="727"]]
1452
1453
1454 [[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1455
1456
1457 [[image:image-20220524094909-5.png||height="341" width="734"]]
1458
1459
1460 == 3.6 Interface Detail ==
1461
1462 === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1463
1464
1465 Support NPN Type sensor
1466
1467 [[image:1653356991268-289.png]]
1468
1469
1470 === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1471
1472
1473 (((
1474 The DI port of LT-22222-L can support **NPN** or **PNP** or **Dry Contact** output sensor.
1475 )))
1476
1477 (((
1478 (((
1479 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.
1480
1481
1482 )))
1483 )))
1484
1485 [[image:1653357170703-587.png]]
1486
1487 (((
1488 (((
1489 When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1490 )))
1491 )))
1492
1493 (((
1494
1495 )))
1496
1497 (((
1498 (% style="color:blue" %)**Example1**(%%): Connect to a Low active sensor.
1499 )))
1500
1501 (((
1502 This type of sensor will output a low signal GND when active.
1503 )))
1504
1505 * (((
1506 Connect sensor's output to DI1-
1507 )))
1508 * (((
1509 Connect sensor's VCC to DI1+.
1510 )))
1511
1512 (((
1513 So when sensor active, the current between NEC2501 pin1 and pin2 is：
1514 )))
1515
1516 (((
1517 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1**+** / 1K.**
1518 )))
1519
1520 (((
1521 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.
1522 )))
1523
1524 (((
1525
1526 )))
1527
1528 (((
1529 (% style="color:blue" %)**Example2**(%%): Connect to a High active sensor.
1530 )))
1531
1532 (((
1533 This type of sensor will output a high signal (example 24v) when active.
1534 )))
1535
1536 * (((
1537 Connect sensor's output to DI1+
1538 )))
1539 * (((
1540 Connect sensor's GND DI1-.
1541 )))
1542
1543 (((
1544 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1545 )))
1546
1547 (((
1548 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1549 )))
1550
1551 (((
1552 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.
1553 )))
1554
1555 (((
1556
1557 )))
1558
1559 (((
1560 (% style="color:blue" %)**Example3**(%%): Connect to a 220v high active sensor.
1561 )))
1562
1563 (((
1564 Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1565 )))
1566
1567 * (((
1568 Connect sensor's output to DI1+ with a serial 50K resistor
1569 )))
1570 * (((
1571 Connect sensor's GND DI1-.
1572 )))
1573
1574 (((
1575 So when sensor active, the current between NEC2501 pin1 and pin2 is:
1576 )))
1577
1578 (((
1579 [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1580 )))
1581
1582 (((
1583 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.
1584 )))
1585
1586
1587 (% style="color:blue" %)**Example4**(%%): Connect to Dry Contact sensor
1588
1589 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.
1590
1591 To detect a Dry Contact, we can provide a power source to one pin of the Dry Contact. Below is a reference connection.
1592
1593 [[image:image-20230616235145-1.png]]
1594
1595
1596
1597 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1598
1599
1600 (% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1601
1602 (% style="color:red" %)**Note: DO pins go to float when device is power off.**
1603
1604 [[image:1653357531600-905.png]]
1605
1606
1607 === 3.6.4 Analog Input Interface ===
1608
1609
1610 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:
1611
1612
1613 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1614
1615 [[image:1653357592296-182.png]]
1616
1617 Example to connect a 4~~20mA sensor
1618
1619 We take the wind speed sensor as an example for reference only.
1620
1621
1622 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1623
1624 (% style="color:red" %)**Red:  12~~24v**
1625
1626 (% style="color:#ffc000" %)**Yellow:  4~~20mA**
1627
1628 **Black:  GND**
1629
1630 **Connection diagram:**
1631
1632 [[image:1653357640609-758.png]]
1633
1634 [[image:1653357648330-671.png||height="155" width="733"]]
1635
1636
1637 Example connected to a regulated power supply to measure voltage
1638
1639 [[image:image-20230608101532-1.png||height="606" width="447"]]
1640
1641 [[image:image-20230608101608-2.jpeg||height="379" width="284"]]
1642
1643 [[image:image-20230608101722-3.png||height="102" width="1139"]]
1644
1645
1646 (% style="color:blue; font-weight:bold" %)**Specifications of the regulated power**(%%) (% style="color:blue" %)**:**
1647
1648 (% style="color:red" %)**Red:  12~~24v**
1649
1650 **Black:  GND**
1651
1652
1653 === 3.6.5 Relay Output ===
1654
1655
1656 (((
1657 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:
1658
1659 **Note**: RO pins go to Open(NO) when device is power off.
1660 )))
1661
1662 [[image:image-20220524100215-9.png]]
1663
1664
1665 [[image:image-20220524100215-10.png||height="382" width="723"]]
1666
1667
1668 == 3.7 LEDs Indicators ==
1669
1670
1671 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1672 |(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**LEDs**|(% style="background-color:#d9e2f3; color:#0070c0; width:470px" %)**Feature**
1673 |**PWR**|Always on if there is power
1674 |**SYS**|(((
1675 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.
1676 )))
1677 |**TX**|(((
1678 (((
1679 Device boot: TX blinks 5 times.
1680 )))
1681
1682 (((
1683 Successful join network: TX ON for 5 seconds.
1684 )))
1685
1686 (((
1687 Transmit a LoRa packet: TX blinks once
1688 )))
1689 )))
1690 |**RX**|RX blinks once when receive a packet.
1691 |**DO1**|
1692 |**DO2**|
1693 |**DO3**|
1694 |**DI2**|(((
1695 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1696 )))
1697 |**DI2**|(((
1698 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1699 )))
1700 |**DI2**|(((
1701 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1702 )))
1703 |**RO1**|
1704 |**RO2**|
1705
1706 = 4. Use AT Command =
1707
1708 == 4.1 Access AT Command ==
1709
1710
1711 (((
1712 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.
1713 )))
1714
1715 (((
1716
1717 )))
1718
1719 [[image:1653358238933-385.png]]
1720
1721
1722 (((
1723 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:
1724 )))
1725
1726 [[image:1653358355238-883.png]]
1727
1728
1729 (((
1730 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/]]
1731 )))
1732
1733 (((
1734 AT+<CMD>?        : Help on <CMD>
1735 )))
1736
1737 (((
1738 AT+<CMD>         : Run <CMD>
1739 )))
1740
1741 (((
1742 AT+<CMD>=<value> : Set the value
1743 )))
1744
1745 (((
1746 AT+<CMD>=?       :  Get the value
1747 )))
1748
1749 (((
1750 ATZ: Trig a reset of the MCU
1751 )))
1752
1753 (((
1754 AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1755 )))
1756
1757 (((
1758 AT+DEUI: Get or Set the Device EUI
1759 )))
1760
1761 (((
1762 AT+DADDR: Get or Set the Device Address
1763 )))
1764
1765 (((
1766 AT+APPKEY: Get or Set the Application Key
1767 )))
1768
1769 (((
1770 AT+NWKSKEY: Get or Set the Network Session Key
1771 )))
1772
1773 (((
1774 AT+APPSKEY:  Get or Set the Application Session Key
1775 )))
1776
1777 (((
1778 AT+APPEUI:  Get or Set the Application EUI
1779 )))
1780
1781 (((
1782 AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1783 )))
1784
1785 (((
1786 AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1787 )))
1788
1789 (((
1790 AT+DR:  Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1791 )))
1792
1793 (((
1794 AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1795 )))
1796
1797 (((
1798 AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1799 )))
1800
1801 (((
1802 AT+RX2FQ: Get or Set the Rx2 window frequency
1803 )))
1804
1805 (((
1806 AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1807 )))
1808
1809 (((
1810 AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1811 )))
1812
1813 (((
1814 AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1815 )))
1816
1817 (((
1818 AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1819 )))
1820
1821 (((
1822 AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1823 )))
1824
1825 (((
1826 AT+NJM:  Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1827 )))
1828
1829 (((
1830 AT+NWKID: Get or Set the Network ID
1831 )))
1832
1833 (((
1834 AT+FCU: Get or Set the Frame Counter Uplink
1835 )))
1836
1837 (((
1838 AT+FCD: Get or Set the Frame Counter Downlink
1839 )))
1840
1841 (((
1842 AT+CLASS: Get or Set the Device Class
1843 )))
1844
1845 (((
1846 AT+JOIN: Join network
1847 )))
1848
1849 (((
1850 AT+NJS: Get OTAA Join Status
1851 )))
1852
1853 (((
1854 AT+SENDB: Send hexadecimal data along with the application port
1855 )))
1856
1857 (((
1858 AT+SEND: Send text data along with the application port
1859 )))
1860
1861 (((
1862 AT+RECVB: Print last received data in binary format (with hexadecimal values)
1863 )))
1864
1865 (((
1866 AT+RECV: Print last received data in raw format
1867 )))
1868
1869 (((
1870 AT+VER:  Get current image version and Frequency Band
1871 )))
1872
1873 (((
1874 AT+CFM: Get or Set the confirmation mode (0-1)
1875 )))
1876
1877 (((
1878 AT+CFS:  Get confirmation status of the last AT+SEND (0-1)
1879 )))
1880
1881 (((
1882 AT+SNR: Get the SNR of the last received packet
1883 )))
1884
1885 (((
1886 AT+RSSI: Get the RSSI of the last received packet
1887 )))
1888
1889 (((
1890 AT+TDC: Get or set the application data transmission interval in ms
1891 )))
1892
1893 (((
1894 AT+PORT: Get or set the application port
1895 )))
1896
1897 (((
1898 AT+DISAT: Disable AT commands
1899 )))
1900
1901 (((
1902 AT+PWORD: Set password, max 9 digits
1903 )))
1904
1905 (((
1906 AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1907 )))
1908
1909 (((
1910 AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1911 )))
1912
1913 (((
1914 AT+CFG: Print all settings
1915 )))
1916
1917
1918 == 4.2 Common AT Command Sequence ==
1919
1920 === 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1921
1922 (((
1923
1924
1925 (((
1926 (% style="color:blue" %)**If device has not joined network yet:**
1927 )))
1928 )))
1929
1930 (((
1931 (% style="background-color:#dcdcdc" %)**123456**
1932 )))
1933
1934 (((
1935 (% style="background-color:#dcdcdc" %)**AT+FDR**
1936 )))
1937
1938 (((
1939 (% style="background-color:#dcdcdc" %)**123456**
1940 )))
1941
1942 (((
1943 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1944 )))
1945
1946 (((
1947 (% style="background-color:#dcdcdc" %)**ATZ**
1948 )))
1949
1950
1951 (((
1952 (% style="color:blue" %)**If device already joined network:**
1953 )))
1954
1955 (((
1956 (% style="background-color:#dcdcdc" %)**AT+NJM=0**
1957 )))
1958
1959 (((
1960 (% style="background-color:#dcdcdc" %)**ATZ**
1961 )))
1962
1963
1964 === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
1965
1966 (((
1967
1968
1969 (((
1970 (% style="background-color:#dcdcdc" %)**123456**(%%)  ~/~/ Enter Password to have AT access.
1971 )))
1972 )))
1973
1974 (((
1975 (% style="background-color:#dcdcdc" %)** AT+FDR**(%%)  ~/~/ Reset Parameters to Factory Default, Keys Reserve
1976 )))
1977
1978 (((
1979 (% style="background-color:#dcdcdc" %)** 123456**(%%)  ~/~/ Enter Password to have AT access.
1980 )))
1981
1982 (((
1983 (% style="background-color:#dcdcdc" %)** AT+CLASS=C**(%%)  ~/~/ Set to work in CLASS C
1984 )))
1985
1986 (((
1987 (% style="background-color:#dcdcdc" %)** AT+NJM=0**(%%)  ~/~/ Set to ABP mode
1988 )))
1989
1990 (((
1991 (% style="background-color:#dcdcdc" %) **AT+ADR=0**(%%)  ~/~/ Set the Adaptive Data Rate Off
1992 )))
1993
1994 (((
1995 (% style="background-color:#dcdcdc" %)** AT+DR=5**(%%)  ~/~/ Set Data Rate
1996 )))
1997
1998 (((
1999 (% style="background-color:#dcdcdc" %)** AT+TDC=60000**(%%)  ~/~/ Set transmit interval to 60 seconds
2000 )))
2001
2002 (((
2003 (% style="background-color:#dcdcdc" %)** AT+CHS=868400000**(%%)  ~/~/ Set transmit frequency to 868.4Mhz
2004 )))
2005
2006 (((
2007 (% style="background-color:#dcdcdc" %)** AT+RX2FQ=868400000**(%%)  ~/~/ Set RX2Frequency to 868.4Mhz (according to the result from server)
2008 )))
2009
2010 (((
2011 (% style="background-color:#dcdcdc" %)** AT+RX2DR=5**(%%)** ** ~/~/ Set RX2DR to match the downlink DR from server. see below
2012 )))
2013
2014 (((
2015 (% 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.
2016 )))
2017
2018 (((
2019 (% style="background-color:#dcdcdc" %)** ATZ**         (%%) ~/~/ Reset MCU
2020
2021
2022 )))
2023
2024 (((
2025 (% style="color:red" %)**Note:**
2026 )))
2027
2028 (((
2029 **~1. Make sure the device is set to ABP mode in the IoT Server.**
2030
2031 **2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.**
2032
2033 **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?
2034 dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
2035
2036 **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.**
2037
2038
2039 )))
2040
2041 (((
2042 [[image:1653359097980-169.png||height="188" width="729"]]
2043 )))
2044
2045 (((
2046
2047 )))
2048
2049 === 4.2.3 Change to Class A ===
2050
2051
2052 (((
2053 (% style="color:blue" %)**If sensor JOINED:**
2054
2055 (% style="background-color:#dcdcdc" %)**AT+CLASS=A
2056 ATZ**
2057 )))
2058
2059
2060 = 5. Case Study =
2061
2062 == 5.1 Counting how many objects pass in Flow Line ==
2063
2064
2065 Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
2066
2067
2068 = 6. FAQ =
2069
2070 == 6.1 How to upgrade the image? ==
2071
2072
2073 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
2074
2075 * Support new features
2076 * For bug fix
2077 * Change LoRaWAN bands.
2078
2079 Below shows the hardware connection for how to upload an image to the LT:
2080
2081 [[image:1653359603330-121.png]]
2082
2083
2084 (((
2085 (% 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]].
2086 (% 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]].
2087 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
2088
2089
2090 (((
2091 (% style="color:blue" %)**For LT-22222-L**(%%):
2092 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.
2093 )))
2094
2095
2096 )))
2097
2098 [[image:image-20220524103407-12.png]]
2099
2100
2101 [[image:image-20220524103429-13.png]]
2102
2103
2104 [[image:image-20220524104033-15.png]]
2105
2106
2107 (% 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:
2108
2109
2110 [[image:1653360054704-518.png||height="186" width="745"]]
2111
2112
2113 (((
2114 (((
2115 == 6.2 How to change the LoRa Frequency Bands/Region? ==
2116
2117
2118 )))
2119 )))
2120
2121 (((
2122 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2123 )))
2124
2125 (((
2126
2127
2128 == 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2129
2130
2131 )))
2132
2133 (((
2134 (((
2135 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2136 )))
2137 )))
2138
2139 (((
2140 (((
2141 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2142
2143
2144 )))
2145 )))
2146
2147 (((
2148 (% 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.
2149
2150
2151 )))
2152
2153 (((
2154 [[image:1653360231087-571.png||height="401" width="727"]]
2155
2156
2157 )))
2158
2159 (((
2160 (% 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.**
2161 )))
2162
2163
2164
2165 (((
2166 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2167
2168
2169 )))
2170
2171 (((
2172 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2173 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2174 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2175 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2176 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2177 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2178 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2179 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2180 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2181 )))
2182
2183
2184 (((
2185 As shown in below:
2186 )))
2187
2188 [[image:1653360498588-932.png||height="485" width="726"]]
2189
2190
2191 == 6.4 How to change the uplink interval？ ==
2192
2193
2194 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/]]
2195
2196
2197 == 6.5 Can I see counting event in Serial? ==
2198
2199
2200 (((
2201 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.
2202
2203
2204 == 6.6 Can i use point to point communication for LT-22222-L? ==
2205
2206
2207 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]].
2208
2209
2210 )))
2211
2212 (((
2213 == 6.7 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2214
2215
2216 If the device is not shut down, but directly powered off.
2217
2218 It will default that this is a power-off state.
2219
2220 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2221
2222 After restart, the status before power failure will be read from flash.
2223
2224
2225 == 6.8 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2226
2227
2228 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2229
2230
2231 [[image:image-20221006170630-1.png||height="610" width="945"]]
2232
2233
2234 == 6.9 Can LT22222-L save RO state? ==
2235
2236
2237 Firmware version needs to be no less than 1.6.0.
2238
2239
2240 = 7. Trouble Shooting =
2241 )))
2242
2243 (((
2244 (((
2245 == 7.1 Downlink doesn't work, how to solve it? ==
2246
2247
2248 )))
2249 )))
2250
2251 (((
2252 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2253 )))
2254
2255 (((
2256
2257
2258 == 7.2 Have trouble to upload image. ==
2259
2260
2261 )))
2262
2263 (((
2264 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2265 )))
2266
2267 (((
2268
2269
2270 == 7.3 Why I can't join TTN in US915 /AU915 bands? ==
2271
2272
2273 )))
2274
2275 (((
2276 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2277 )))
2278
2279
2280 = 8. Order Info =
2281
2282
2283 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2284
2285 (% style="color:#4f81bd" %)**XXX:**
2286
2287 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2288 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2289 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2290 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2291 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2292 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2293 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2294 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2295 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2296
2297 = 9. Packing Info =
2298
2299
2300 **Package Includes**:
2301
2302 * LT-22222-L I/O Controller x 1
2303 * Stick Antenna for LoRa RF part x 1
2304 * Bracket for controller x1
2305 * Program cable x 1
2306
2307 **Dimension and weight**:
2308
2309 * Device Size: 13.5 x 7 x 3 cm
2310 * Device Weight: 105g
2311 * Package Size / pcs : 14.5 x 8 x 5 cm
2312 * Weight / pcs : 170g
2313
2314 = 10. Support =
2315
2316
2317 * (((
2318 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.
2319 )))
2320 * (((
2321 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]]
2322
2323
2324
2325 )))
2326
2327 = 11. Reference​​​​​ =
2328
2329
2330 * 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]]
2331 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2332 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2333
2334