Version 127.1 by Bei Jinggeng on 2023/08/21 09:08
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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
193 == 1.4  Applications ==
194
195
196 * Smart Buildings & Home Automation
197
198 * Logistics and Supply Chain Management
199
200 * Smart Metering
201
202 * Smart Agriculture
203
204 * Smart Cities
205
206 * Smart Factory
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
227 = 2. Power ON Device =
228
229
230 (((
231 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.
232 )))
233
234 (((
235 PWR will on when device is properly powered.
236
237
238 )))
239
240 [[image:1653297104069-180.png]]
241
242
243 = 3. Operation Mode =
244
245 == 3.1 How it works? ==
246
247
248 (((
249 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. 
250 )))
251
252 (((
253 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.
254 )))
255
256
257 == 3.2 Example to join LoRaWAN network ==
258
259
260 (((
261 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. 
262
263
264 )))
265
266 [[image:image-20220523172350-1.png||height="266" width="864"]]
267
268
269 (((
270 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:
271
272
273 )))
274
275 (((
276 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
277 )))
278
279 (((
280 Each LT is shipped with a sticker with the default device EUI as below:
281 )))
282
283 [[image:image-20230425173427-2.png||height="246" width="530"]]
284
285
286 Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
287
288 **Add APP EUI in the application.**
289
290 [[image:1653297955910-247.png||height="321" width="716"]]
291
292
293 **Add APP KEY and DEV EUI**
294
295 [[image:1653298023685-319.png]]
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
325 === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
326
327
328 (((
329 The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default. (% style="display:none" %)
330
331 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
332 |(% 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**
333 |Value|(((
334 AVI1 voltage
335 )))|(((
336 AVI2 voltage
337 )))|(((
338 ACI1 Current
339 )))|(((
340 ACI2 Current
341 )))|DIDORO*|(((
342 Reserve
343 )))|MOD
344 )))
345
346 (((
347 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
348
349 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
350 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
351 |RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
352 )))
353
354 * RO is for relay. ROx=1 : close, ROx=0 always open.
355 * DI is for digital input. DIx=1: high or float, DIx=0: low.
356 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
357
358 (% style="color:red" %)**Note: DI3 and DO3 bit are not valid for LT-22222-L**
359
360 For example if payload is: [[image:image-20220523175847-2.png]]
361
362
363 **The value for the interface is:  **
364
365 AVI1 channel voltage is 0x04AB/1000=1195(DEC)/1000=1.195V
366
367 AVI2 channel voltage is 0x04AC/1000=1.196V
368
369 ACI1 channel current is 0x1310/1000=4.880mA
370
371 ACI2 channel current is 0x1300/1000=4.864mA
372
373 The last byte 0xAA= 10101010(B) means
374
375 * [1] RO1 relay channel is close and the RO1 LED is ON.
376 * [0] RO2 relay channel is open and RO2 LED is OFF;
377
378 **LT22222-L:**
379
380 * [1] DI2 channel is high input and DI2 LED is ON;
381 * [0] DI1 channel is low input;
382
383 * [0] DO3 channel output state
384 ** DO3 is float in case no load between DO3 and V+.;
385 ** DO3 is high in case there is load between DO3 and V+.
386 ** DO3 LED is off in both case
387 * [1] DO2 channel output is low and DO2 LED is ON.
388 * [0] DO1 channel output state
389 ** DO1 is float in case no load between DO1 and V+.;
390 ** DO1 is high in case there is load between DO1 and V+.
391 ** DO1 LED is off in both case
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
430 (((
431 **To use counting mode, please run:**
432 )))
433
434 (((
435 (% class="box infomessage" %)
436 (((
437 **AT+MOD=2**
438
439 **ATZ**
440 )))
441 )))
442
443 (((
444
445
446 (% style="color:#4f81bd" %)**AT Commands for counting:**
447 )))
448
449 (((
450 **For LT22222-L:**
451
452 (% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
453
454 (% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
455
456 (% style="color:blue" %)**AT+TRIG2=0,100**(%%)**  (set DI2 port to trigger on low level, valid signal is 100ms) **
457
458 (% style="color:blue" %)**AT+TRIG2=1,100**(%%)**  (set DI2 port to trigger on high level, valid signal is 100ms ) **
459
460 (% style="color:blue" %)**AT+SETCNT=1,60**(%%)**   (Set COUNT1 value to 60)**
461
462 (% style="color:blue" %)**AT+SETCNT=2,60**(%%)**   (Set COUNT2 value to 60)**
463 )))
464
465
466 === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
467
468
469 **LT22222-L**: This mode the DI1 is used as a counting pin.
470
471 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
472 |(% 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**
473 |Value|COUNT1|(((
474 ACI1 Current
475 )))|(((
476 ACI2 Current
477 )))|DIDORO*|Reserve|MOD
478
479 (((
480 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
481
482 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
483 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
484 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
485 )))
486
487 * RO is for relay. ROx=1 : close, ROx=0 always open.
488 * FIRST: Indicate this is the first packet after join network.
489 * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
490
491 (((
492 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
493 )))
494
495
496 (((
497 **To use counting mode, please run:**
498 )))
499
500 (((
501 (% class="box infomessage" %)
502 (((
503 **AT+MOD=3**
504
505 **ATZ**
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 (% class="box infomessage" %)
555 (((
556 **AT+MOD=4**
557
558 **ATZ**
559 )))
560 )))
561
562 (((
563 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
564 )))
565
566 (((
567 **Plus below command for AVI1 Counting:**
568
569 (% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
570
571 (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
572
573 (% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**  (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
574
575 (% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**  (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
576 )))
577
578
579 === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
580
581
582 **LT22222-L**: This mode the DI1 is used as a counting pin.
583
584 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
585 |(% 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**
586 |Value|(((
587 AVI1 voltage
588 )))|(((
589 AVI2 voltage
590 )))|(((
591 ACI1 Current
592 )))|COUNT1|DIDORO*|(((
593 Reserve
594 )))|MOD
595
596 (((
597 (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
598
599 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
600 |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
601 |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
602 )))
603
604 * RO is for relay. ROx=1 : close, ROx=0 always open.
605 * FIRST: Indicate this is the first packet after join network.
606 * (((
607 DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
608 )))
609
610 (((
611 (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
612 )))
613
614 (((
615 **To use this mode, please run:**
616 )))
617
618 (((
619 (% class="box infomessage" %)
620 (((
621 **AT+MOD=5**
622
623 **ATZ**
624 )))
625 )))
626
627 (((
628 Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
629 )))
630
631
632 === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
633
634
635 (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
636
637 For example, if user has configured below commands:
638
639 * **AT+MOD=1 ** **~-~->**  The normal working mode
640 * **AT+ADDMOD6=1**   **~-~->**  Enable trigger
641
642 LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
643
644 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
645 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.**
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
841 === 3.4.1 Common Commands ===
842
843
844 (((
845 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]]
846 )))
847
848
849 === 3.4.2 Sensor related commands ===
850
851 ==== 3.4.2.1 Set Transmit Interval ====
852
853
854 Set device uplink interval.
855
856 * (% style="color:#037691" %)**AT Command:**
857
858 (% style="color:blue" %)**AT+TDC=N **
859
860
861 **Example: **AT+TDC=30000. Means set interval to 30 seconds
862
863
864 * (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
865
866 (% style="color:blue" %)**0x01 aa bb cc  **(%%)** ~/~/ Same as AT+TDC=0x(aa bb cc)**
867
868
869
870 ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
871
872
873 Set work mode.
874
875 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+MOD=N  **
876
877 **Example**: AT+MOD=2. Set work mode to Double DI counting mode
878
879 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
880
881 (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
882
883
884
885 ==== 3.4.2.3 Poll an uplink ====
886
887
888 * (% style="color:#037691" %)**AT Command:**(%%) There is no AT Command to poll uplink
889
890 * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
891
892 (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
893
894 **Example**: 0x08FF, ask device to send an Uplink
895
896
897
898 ==== 3.4.2.4 Enable Trigger Mode ====
899
900
901 Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
902
903 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
904
905 (% style="color:red" %)**1:** (%%)Enable Trigger Mode
906
907 (% style="color:red" %)**0: **(%%)Disable Trigger Mode
908
909
910 * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A 06):**
911
912 (% style="color:blue" %)**0x0A 06 aa    **(%%) ~/~/ Same as AT+ADDMOD6=aa
913
914
915
916 ==== 3.4.2.5 Poll trigger settings ====
917
918
919 Poll trigger settings
920
921 * (% style="color:#037691" %)**AT Command:**
922
923 There is no AT Command for this feature.
924
925 * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
926
927 (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
928
929
930
931 ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
932
933
934 Enable Disable DI1/DI2/DI2 as trigger,
935
936 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
937
938 **Example:** AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
939
940
941 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
942
943 (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
944
945
946
947 ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
948
949
950 Set DI1 or DI3(for LT-33222-L) trigger.
951
952 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+TRIG1=a,b**
953
954 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
955
956 (% style="color:red" %)**b :** (%%)delay timing.
957
958 **Example:** AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
959
960
961 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
962
963 (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
964
965
966
967 ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
968
969
970 Set DI2 trigger.
971
972 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+TRIG2=a,b**
973
974 (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
975
976 (% style="color:red" %)**b :** (%%)delay timing.
977
978 **Example:** AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
979
980
981 * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
982
983 (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
984
985
986
987 ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
988
989
990 Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
991
992 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+ACLIM**
993
994 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
995
996 (% 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"]]
997
998
999
1000 ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
1001
1002
1003 Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
1004
1005 * (% style="color:#037691" %)**AT Command**(%%): (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
1006
1007 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
1008
1009 (% 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"]]
1010
1011
1012
1013 ==== 3.4.2.11 Trigger – Set minimum interval ====
1014
1015
1016 Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
1017
1018 * (% 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.
1019
1020 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
1021
1022 (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
1023
1024 (((
1025 (% style="color:red" %)**Note: ATDC setting must be more than 5min**
1026 )))
1027
1028
1029
1030 ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1031
1032
1033 * (% style="color:#037691" %)**AT Command**
1034
1035 There is no AT Command to control Digital Output
1036
1037
1038 * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1039
1040 (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1041
1042 (((
1043 If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1044 )))
1045
1046 (((
1047 01: Low,  00: High ,  11: No action
1048
1049 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
1050 |(% 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**
1051 |02  01  00  11|Low|High|No Action
1052 |02  00  11  01|High|No Action|Low
1053 |02  11  01  00|No Action|Low|High
1054 )))
1055
1056 (((
1057 (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1058 )))
1059
1060 (((
1061 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1062 )))
1063
1064
1065
1066 ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1067
1068
1069 * (% style="color:#037691" %)**AT Command**
1070
1071 There is no AT Command to control Digital Output
1072
1073
1074 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA9)**
1075
1076 (% style="color:blue" %)**0xA9 aa bb cc     **(%%) ~/~/ Set DO1/DO2/DO3 output with time control
1077
1078
1079 This is to control the digital output time of DO pin. Include four bytes:
1080
1081 (% style="color:#4f81bd" %)**First Byte**(%%)**:** Type code (0xA9)
1082
1083 (% style="color:#4f81bd" %)**Second Byte**(%%): Inverter Mode
1084
1085 01: DO pins will change back to original state after timeout.
1086
1087 00: DO pins will change to an inverter state after timeout 
1088
1089
1090 (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1091
1092 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1093 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1094 |0x01|DO1 set to low
1095 |0x00|DO1 set to high
1096 |0x11|DO1 NO Action
1097
1098 (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1099
1100 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1101 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1102 |0x01|DO2 set to low
1103 |0x00|DO2 set to high
1104 |0x11|DO2 NO Action
1105
1106 (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1107
1108 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1109 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1110 |0x01|DO3 set to low
1111 |0x00|DO3 set to high
1112 |0x11|DO3 NO Action
1113
1114 (% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:(%%) Latching time. Unit: ms
1115
1116
1117 (% style="color:red" %)**Note: **
1118
1119 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1120
1121 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1122
1123 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1124
1125
1126 **Example payload:**
1127
1128 **~1. A9 01 01 01 01 07 D0**
1129
1130 DO1 pin & DO2 pin & DO3 pin will be set to Low, last 2 seconds, then change back to original state.
1131
1132 **2. A9 01 00 01 11 07 D0**
1133
1134 DO1 pin set high, DO2 pin set low, DO3 pin no action, last 2 seconds, then change back to original state.
1135
1136 **3. A9 00 00 00 00 07 D0**
1137
1138 DO1 pin & DO2 pin & DO3 pin will be set to high, last 2 seconds, then both change to low.
1139
1140 **4. A9 00 11 01 00 07 D0**
1141
1142 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
1143
1144
1145
1146 ==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1147
1148
1149 * (% style="color:#037691" %)**AT Command:**
1150
1151 There is no AT Command to control Relay Output
1152
1153
1154 * (% style="color:#037691" %)**Downlink Payload (prefix 0x03):**
1155
1156 (% style="color:blue" %)**0x03 aa bb     ** (%%)~/~/ Set RO1/RO2 output
1157
1158
1159 (((
1160 If payload = 0x030100, it means set RO1 to close and RO2 to open.
1161 )))
1162
1163 (((
1164 01: Close ,  00: Open , 11: No action
1165
1166 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1167 |(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO2**
1168 |03  00  11|Open|No Action
1169 |03  01  11|Close|No Action
1170 |03  11  00|No Action|Open
1171 |03  11  01|No Action|Close
1172 |03  00  00|Open|Open
1173 |03  01  01|Close|Close
1174 |03  01  00|Close|Open
1175 |03  00  01|Open|Close
1176 )))
1177
1178 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1179
1180
1181
1182 ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1183
1184
1185 * (% style="color:#037691" %)**AT Command:**
1186
1187 There is no AT Command to control Relay Output
1188
1189
1190 * (% style="color:#037691" %)**Downlink Payload (prefix 0x05):**
1191
1192 (% style="color:blue" %)**0x05 aa bb cc dd     ** (%%)~/~/ Set RO1/RO2 relay with time control
1193
1194
1195 This is to control the relay output time of relay. Include four bytes:
1196
1197 (% style="color:#4f81bd" %)**First Byte **(%%)**:** Type code (0x05)
1198
1199 (% style="color:#4f81bd" %)**Second Byte(aa)**(%%): Inverter Mode
1200
1201 01: Relays will change back to original state after timeout.
1202
1203 00: Relays will change to an inverter state after timeout
1204
1205
1206 (% style="color:#4f81bd" %)**Third Byte(bb)**(%%): Control Method and Ports status:
1207
1208 [[image:image-20221008095908-1.png||height="364" width="564"]]
1209
1210
1211 (% style="color:#4f81bd" %)**Fourth/Fifth/Sixth/Seventh Bytes(cc)**(%%): Latching time. Unit: ms
1212
1213
1214 (% style="color:red" %)**Note:**
1215
1216 Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
1217
1218 Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1219
1220
1221 (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1222
1223
1224 **Example payload:**
1225
1226 **~1. 05 01 11 07 D0**
1227
1228 Relay1 and Relay 2 will be set to NC , last 2 seconds, then change back to original state.
1229
1230 **2. 05 01 10 07 D0**
1231
1232 Relay1 will change to NC, Relay2 will change to NO, last 2 seconds, then both change back to original state.
1233
1234 **3. 05 00 01 07 D0**
1235
1236 Relay1 will change to NO, Relay2 will change to NC, last 2 seconds, then relay change to NC,Relay2 change to NO.
1237
1238 **4. 05 00 00 07 D0**
1239
1240 Relay 1 & relay2 will change to NO, last 2 seconds, then both change to NC.
1241
1242
1243
1244 ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1245
1246
1247 When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1248
1249 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1250
1251 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1252
1253 (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
1254
1255
1256
1257 ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1258
1259
1260 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1261
1262 (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1263
1264 (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
1265
1266
1267 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
1268
1269 (% style="color:blue" %)**0x A8 aa bb cc dd ee     ** (%%)~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
1270
1271
1272
1273 ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1274
1275
1276 Clear counting for counting mode
1277
1278 * (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+CLRCOUNT         **(%%) ~/~/ clear all counting
1279
1280 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1281
1282 (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
1283
1284
1285
1286 ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1287
1288
1289 * (% style="color:#037691" %)**AT Command:**
1290
1291 (% 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)
1292
1293
1294 * (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
1295
1296 (% style="color:blue" %)**0x A7 aa bb cc     ** (%%)~/~/ same as AT+COUTIME =aa bb cc,
1297
1298 (((
1299 range: aa bb cc:0 to 16777215,  (unit:second)
1300 )))
1301
1302
1303
1304 ==== 3.4.2.20 Reset save RO DO state ====
1305
1306
1307 * (% style="color:#037691" %)**AT Command:**
1308
1309 (% style="color:blue" %)**AT+RODORESET=1    **(%%)~/~/ RODO will close when the device joining the network. (default)
1310
1311 (% 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.
1312
1313
1314 * (% style="color:#037691" %)**Downlink Payload (prefix 0xAD):**
1315
1316 (% style="color:blue" %)**0x AD aa      ** (%%)~/~/ same as AT+RODORET =aa
1317
1318
1319
1320 ==== 3.4.2.21 Encrypted payload ====
1321
1322
1323 * (% style="color:#037691" %)**AT Command:**
1324
1325 (% style="color:blue" %)**AT+DECRYPT=1  ** (%%)~/~/ The payload is uploaded without encryption
1326
1327 (% style="color:blue" %)**AT+DECRYPT=0    **(%%)~/~/  Encrypt when uploading payload (default)
1328
1329
1330
1331 ==== 3.4.2.22 Get sensor value ====
1332
1333
1334 * (% style="color:#037691" %)**AT Command:**
1335
1336 (% style="color:blue" %)**AT+GETSENSORVALUE=0    **(%%)~/~/ The serial port gets the reading of the current sensor
1337
1338 (% style="color:blue" %)**AT+GETSENSORVALUE=1    **(%%)~/~/ The serial port gets the current sensor reading and uploads it.
1339
1340
1341
1342 ==== 3.4.2.23 Resets the downlink packet count ====
1343
1344
1345 * (% style="color:#037691" %)**AT Command:**
1346
1347 (% 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)
1348
1349 (% 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.
1350
1351
1352
1353 ==== 3.4.2.24 When the limit bytes are exceeded, upload in batches ====
1354
1355
1356 * (% style="color:#037691" %)**AT Command:**
1357
1358 (% 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)
1359
1360 (% 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.
1361
1362
1363 * (% style="color:#037691" %)**Downlink Payload **(%%)**:**
1364
1365 (% style="color:blue" %)**0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1366
1367
1368
1369 ==== 3.4.2.25 Copy downlink to uplink ====
1370
1371
1372 * (% style="color:#037691" %)**AT Command**(%%)**:**
1373
1374 (% 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.
1375
1376 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.
1377
1378
1379 [[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"]]
1380
1381 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1382
1383
1384
1385 [[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"]]
1386
1387 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1388
1389
1390
1391 ==== 3.4.2.26 Query version number and frequency band 、TDC ====
1392
1393
1394 * (((
1395 (% style="color:#037691" %)**Downlink Payload**(%%)**:**
1396
1397 (% style="color:blue" %)**26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1398
1399
1400 )))
1401
1402 **Example：**
1403
1404 [[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"]]
1405
1406
1407 == 3.5 Integrate with Mydevice ==
1408
1409
1410 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:
1411
1412 (((
1413 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
1414 )))
1415
1416 (((
1417 (% 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:
1418
1419
1420 )))
1421
1422 [[image:image-20220719105525-1.png||height="377" width="677"]]
1423
1424
1425
1426 [[image:image-20220719110247-2.png||height="388" width="683"]]
1427
1428
1429 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1430
1431 (% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L) and add DevEUI.(% style="display:none" %)
1432
1433 Search under The things network
1434
1435 [[image:1653356838789-523.png||height="337" width="740"]]
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 === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1592
1593
1594 (% style="color:blue" %)**NPN output**(%%): GND or Float. Max voltage can apply to output pin is 36v.
1595
1596 (% style="color:red" %)**Note: DO pins go to float when device is power off.**
1597
1598 [[image:1653357531600-905.png]]
1599
1600
1601 === 3.6.4 Analog Input Interface ===
1602
1603
1604 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:
1605
1606
1607 (% style="color:blue" %)**AC2 = (IN2 voltage )/12**
1608
1609 [[image:1653357592296-182.png]]
1610
1611 Example to connect a 4~~20mA sensor
1612
1613 We take the wind speed sensor as an example for reference only.
1614
1615
1616 (% style="color:blue" %)**Specifications of the wind speed sensor:**
1617
1618 (% style="color:red" %)**Red:  12~~24v**
1619
1620 (% style="color:#ffc000" %)**Yellow:  4~~20mA**
1621
1622 **Black:  GND**
1623
1624 **Connection diagram:**
1625
1626 [[image:1653357640609-758.png]]
1627
1628 [[image:1653357648330-671.png||height="155" width="733"]]
1629
1630
1631 Example connected to a regulated power supply to measure voltage
1632
1633 [[image:image-20230608101532-1.png||height="606" width="447"]]
1634
1635 [[image:image-20230608101608-2.jpeg||height="379" width="284"]]
1636
1637 [[image:image-20230608101722-3.png||height="102" width="1139"]]
1638
1639
1640 (% style="color:blue; font-weight:bold" %)**Specifications of the regulated power**(%%) (% style="color:blue" %)**:**
1641
1642 (% style="color:red" %)**Red:  12~~24v**
1643
1644 **Black:  GND**
1645
1646
1647 === 3.6.5 Relay Output ===
1648
1649
1650 (((
1651 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:
1652
1653 **Note**: RO pins go to Open(NO) when device is power off.
1654 )))
1655
1656 [[image:image-20220524100215-9.png]]
1657
1658
1659 [[image:image-20220524100215-10.png||height="382" width="723"]]
1660
1661
1662 == 3.7 LEDs Indicators ==
1663
1664
1665 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1666 |(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**LEDs**|(% style="background-color:#d9e2f3; color:#0070c0; width:470px" %)**Feature**
1667 |**PWR**|Always on if there is power
1668 |**SYS**|(((
1669 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.
1670 )))
1671 |**TX**|(((
1672 (((
1673 Device boot: TX blinks 5 times.
1674 )))
1675
1676 (((
1677 Successful join network: TX ON for 5 seconds.
1678 )))
1679
1680 (((
1681 Transmit a LoRa packet: TX blinks once
1682 )))
1683 )))
1684 |**RX**|RX blinks once when receive a packet.
1685 |**DO1**|
1686 |**DO2**|
1687 |**DO3**|
1688 |**DI2**|(((
1689 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1690 )))
1691 |**DI2**|(((
1692 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1693 )))
1694 |**DI2**|(((
1695 For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1696 )))
1697 |**RO1**|
1698 |**RO2**|
1699
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 [[image:1653359097980-169.png||height="188" width="729"]]
2036 )))
2037
2038
2039 === 4.2.3 Change to Class A ===
2040
2041
2042 (((
2043 (% style="color:blue" %)**If sensor JOINED:**
2044
2045 (% style="background-color:#dcdcdc" %)**AT+CLASS=A**
2046
2047 (% style="background-color:#dcdcdc" %)**ATZ**
2048 )))
2049
2050
2051 = 5. Case Study =
2052
2053 == 5.1 Counting how many objects pass in Flow Line ==
2054
2055
2056 Reference Link: [[How to set up to count objects pass in flow line>>How to set up to count objects pass in flow line]]?
2057
2058
2059 = 6. FAQ =
2060
2061 == 6.1 How to upgrade the image? ==
2062
2063
2064 The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
2065
2066 * Support new features
2067 * For bug fix
2068 * Change LoRaWAN bands.
2069
2070 Below shows the hardware connection for how to upload an image to the LT:
2071
2072 [[image:1653359603330-121.png]]
2073
2074
2075 (((
2076 (% 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]].
2077 (% 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]].
2078 (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
2079
2080
2081 (((
2082 (% style="color:blue" %)**For LT-22222-L**(%%):
2083 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.
2084 )))
2085
2086
2087 )))
2088
2089 [[image:image-20220524103407-12.png]]
2090
2091
2092 [[image:image-20220524103429-13.png]]
2093
2094
2095 [[image:image-20220524104033-15.png]]
2096
2097
2098 (% 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:
2099
2100
2101 [[image:1653360054704-518.png||height="186" width="745"]]
2102
2103
2104 (((
2105 (((
2106 == 6.2 How to change the LoRa Frequency Bands/Region? ==
2107
2108
2109 )))
2110 )))
2111
2112 (((
2113 User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
2114 )))
2115
2116 (((
2117
2118
2119 == 6.3 How to set up LT to work with Single Channel Gateway such as LG01/LG02? ==
2120
2121
2122 )))
2123
2124 (((
2125 (((
2126 In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
2127 )))
2128 )))
2129
2130 (((
2131 (((
2132 Assume we have a LG02 working in the frequency 868400000 now , below is the step.
2133
2134
2135 )))
2136 )))
2137
2138 (((
2139 (% 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.
2140
2141
2142 )))
2143
2144 (((
2145 [[image:1653360231087-571.png||height="401" width="727"]]
2146
2147
2148 )))
2149
2150 (((
2151 (% 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.**
2152 )))
2153
2154
2155
2156 (((
2157 (% style="color:blue" %)**Step2**(%%)**:  **Run AT Command to make LT work in Single frequency & ABP mode. Below is the AT commands:
2158
2159
2160 )))
2161
2162 (((
2163 (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2164
2165 (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2166
2167 (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2168
2169 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2170
2171 (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2172
2173 (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2174
2175 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2176
2177 (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2178
2179 (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2180 )))
2181
2182
2183 (((
2184 As shown in below:
2185 )))
2186
2187 [[image:1653360498588-932.png||height="485" width="726"]]
2188
2189
2190 == 6.4 How to change the uplink interval? ==
2191
2192
2193 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/]]
2194
2195
2196 == 6.5 Can I see counting event in Serial? ==
2197
2198
2199 (((
2200 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.
2201
2202
2203 == 6.6 Can i use point to point communication for LT-22222-L? ==
2204
2205
2206 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]].
2207
2208
2209 )))
2210
2211 (((
2212 == 6.7 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
2213
2214
2215 If the device is not shut down, but directly powered off.
2216
2217 It will default that this is a power-off state.
2218
2219 In modes 2 to 5, DO RO status and pulse count are saved in flash.
2220
2221 After restart, the status before power failure will be read from flash.
2222
2223
2224 == 6.8 Can i set up LT-22222-L as a NC(Normal Close) Relay? ==
2225
2226
2227 LT-22222-L built-in relay is NO (Normal Open). User can use an external relay to achieve Normal Close purpose. Diagram as below:
2228
2229
2230 [[image:image-20221006170630-1.png||height="610" width="945"]]
2231
2232
2233 == 6.9 Can LT22222-L save RO state? ==
2234
2235
2236 Firmware version needs to be no less than 1.6.0.
2237
2238 == 6.10 Why does the LT22222 always report 15.585V when measuring AVI? ==
2239
2240
2241 It is likely that the GND is not connected during the measurement, or the wire connected to the GND is loose.
2242
2243
2244
2245 = 7. Trouble Shooting =
2246 )))
2247
2248 (((
2249 (((
2250 == 7.1 Downlink doesn't work, how to solve it? ==
2251
2252
2253 )))
2254 )))
2255
2256 (((
2257 Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
2258 )))
2259
2260 (((
2261
2262
2263 == 7.2 Have trouble to upload image. ==
2264
2265
2266 )))
2267
2268 (((
2269 See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
2270 )))
2271
2272 (((
2273
2274
2275 == 7.3 Why I can't join TTN in US915 /AU915 bands? ==
2276
2277
2278 )))
2279
2280 (((
2281 It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
2282 )))
2283
2284
2285 == ==
2286
2287 = 8. Order Info =
2288
2289
2290 (% style="color:#4f81bd" %)**LT-22222-L-XXX:**
2291
2292 (% style="color:#4f81bd" %)**XXX:**
2293
2294 * (% style="color:red" %)**EU433**(%%):  LT with frequency bands EU433
2295 * (% style="color:red" %)**EU868**(%%):  LT with frequency bands EU868
2296 * (% style="color:red" %)**KR920**(%%):  LT with frequency bands KR920
2297 * (% style="color:red" %)**CN470**(%%):  LT with frequency bands CN470
2298 * (% style="color:red" %)**AS923**(%%):  LT with frequency bands AS923
2299 * (% style="color:red" %)**AU915**(%%):  LT with frequency bands AU915
2300 * (% style="color:red" %)**US915**(%%):  LT with frequency bands US915
2301 * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2302 * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2303
2304
2305 = 9. Packing Info =
2306
2307
2308 **Package Includes**:
2309
2310 * LT-22222-L I/O Controller x 1
2311 * Stick Antenna for LoRa RF part x 1
2312 * Bracket for controller x1
2313 * Program cable x 1
2314
2315 **Dimension and weight**:
2316
2317 * Device Size: 13.5 x 7 x 3 cm
2318 * Device Weight: 105g
2319 * Package Size / pcs : 14.5 x 8 x 5 cm
2320 * Weight / pcs : 170g
2321
2322
2323 = 10. Support =
2324
2325
2326 * (((
2327 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.
2328 )))
2329 * (((
2330 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]]
2331
2332
2333
2334 )))
2335
2336 = 11. Reference​​​​​ =
2337
2338
2339 * 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]]
2340 * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2341 * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2342
2343

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