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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 118.3
edited by Xiaoling
on 2023/05/17 10:48
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To version 136.1
edited by Mengting Qiu
on 2024/09/02 18:13
Change comment: There is no comment for this version

Summary

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Title
... ... @@ -1,1 +1,1 @@
1 -LT-22222-L LoRa IO Controller User Manual
1 +LT-22222-L -- LoRa IO Controller User Manual
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Xiaoling
1 +XWiki.ting
Content
... ... @@ -3,6 +3,10 @@
3 3  
4 4  
5 5  
6 +
7 +
8 +
9 +
6 6  **Table of Contents:**
7 7  
8 8  {{toc/}}
... ... @@ -53,162 +53,71 @@
53 53  
54 54  )))
55 55  
56 -== 1.2  Specifications ==
60 +== 1.2 Specifications ==
57 57  
58 -(((
59 -
60 -
61 61  (% style="color:#037691" %)**Hardware System:**
62 -)))
63 63  
64 -* (((
65 -STM32L072xxxx MCU
66 -)))
67 -* (((
68 -SX1276/78 Wireless Chip 
69 -)))
70 -* (((
71 -(((
72 -Power Consumption:
73 -)))
64 +* STM32L072xxxx MCU
65 +* SX1276/78 Wireless Chip 
66 +* Power Consumption:
67 +** Idle: 4mA@12v
68 +** 20dB Transmit: 34mA@12v
69 +* Operating Temperature: -40 ~~ 85 Degree, No Dew
74 74  
75 -* (((
76 -Idle: 4mA@12v
77 -)))
78 -* (((
79 -20dB Transmit: 34mA@12v
80 -)))
81 -)))
82 -
83 -(((
84 -
85 -
86 86  (% style="color:#037691" %)**Interface for Model: LT22222-L:**
87 -)))
88 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 -)))
73 +* 2 x Digital dual direction Input (Detect High/Low signal, Max: 50v, or 220v with optional external resistor)
74 +* 2 x Digital Output (NPN output. Max pull up voltage 36V,450mA)
75 +* 2 x Relay Output (5A@250VAC / 30VDC)
76 +* 2 x 0~~20mA Analog Input (res:0.01mA)
77 +* 2 x 0~~30V Analog Input (res:0.01v)
78 +* Power Input 7~~ 24V DC. 
107 107  
108 -(((
109 -
110 -
111 111  (% style="color:#037691" %)**LoRa Spec:**
112 -)))
113 113  
114 -* (((
115 -(((
116 -Frequency Range:
117 -)))
82 +* Frequency Range:
83 +** Band 1 (HF): 862 ~~ 1020 Mhz
84 +** Band 2 (LF): 410 ~~ 528 Mhz
85 +* 168 dB maximum link budget.
86 +* +20 dBm - 100 mW constant RF output vs.
87 +* +14 dBm high efficiency PA.
88 +* Programmable bit rate up to 300 kbps.
89 +* High sensitivity: down to -148 dBm.
90 +* Bullet-proof front end: IIP3 = -12.5 dBm.
91 +* Excellent blocking immunity.
92 +* Low RX current of 10.3 mA, 200 nA register retention.
93 +* Fully integrated synthesizer with a resolution of 61 Hz.
94 +* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
95 +* Built-in bit synchronizer for clock recovery.
96 +* Preamble detection.
97 +* 127 dB Dynamic Range RSSI.
98 +* Automatic RF Sense and CAD with ultra-fast AFC.
99 +* Packet engine up to 256 bytes with CRC.
118 118  
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 -
175 175  == 1.3 Features ==
176 176  
177 -
178 178  * LoRaWAN Class A & Class C protocol
179 -
180 180  * Optional Customized LoRa Protocol
181 -
182 182  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
183 -
184 184  * AT Commands to change parameters
185 -
186 186  * Remote configure parameters via LoRa Downlink
187 -
188 188  * Firmware upgradable via program port
189 -
190 190  * Counting
191 191  
192 -== 1.4  Applications ==
111 +== 1.4 Applications ==
193 193  
194 -
195 195  * Smart Buildings & Home Automation
196 -
197 197  * Logistics and Supply Chain Management
198 -
199 199  * Smart Metering
200 -
201 201  * Smart Agriculture
202 -
203 203  * Smart Cities
204 -
205 205  * Smart Factory
206 206  
207 207  == 1.5 Hardware Variants ==
208 208  
209 209  
210 -(% border="1" style="background-color:#f2f2f2; width:500px" %)
211 -|(% style="background-color:#d9e2f3; color:#0070c0; width:103px" %)**Model**|(% style="background-color:#d9e2f3; color:#0070c0; width:131px" %)**Photo**|(% style="background-color:#d9e2f3; color:#0070c0; width:334px" %)**Description**
123 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
124 +|(% style="background-color:#4f81bd; color:white; width:103px" %)**Model**|(% style="background-color:#4f81bd; color:white; width:131px" %)**Photo**|(% style="background-color:#4f81bd; color:white; width:266px" %)**Description**
212 212  |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
213 213  (% style="text-align:center" %)
214 214  [[image:image-20230424115112-1.png||height="106" width="58"]]
... ... @@ -223,17 +223,10 @@
223 223  
224 224  = 2. Power ON Device =
225 225  
226 -
227 -(((
228 228  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.
229 -)))
230 230  
231 -(((
232 232  PWR will on when device is properly powered.
233 233  
234 -
235 -)))
236 -
237 237  [[image:1653297104069-180.png]]
238 238  
239 239  
... ... @@ -292,7 +292,6 @@
292 292  [[image:1653298023685-319.png]]
293 293  
294 294  
295 -
296 296  (((
297 297  (% 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.
298 298  
... ... @@ -308,10 +308,15 @@
308 308  There are five working modes + one interrupt mode on LT for different type application:
309 309  
310 310  * (% style="color:blue" %)**MOD1**(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
216 +
311 311  * (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO
218 +
312 312  * (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO
220 +
313 313  * (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
222 +
314 314  * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
224 +
315 315  * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
316 316  
317 317  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
... ... @@ -320,38 +320,30 @@
320 320  (((
321 321  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default. (% style="display:none" %)
322 322  
323 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
324 -|Size(bytes)(% style="display:none" %) |2|2|2|2|1|1|1
233 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
234 +|(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**
325 325  |Value|(((
326 -AVI1
327 -voltage
236 +AVI1 voltage
328 328  )))|(((
329 -AVI2
330 -voltage
238 +AVI2 voltage
331 331  )))|(((
332 -ACI1
333 -Current
240 +ACI1 Current
334 334  )))|(((
335 -ACI2
336 -Current
242 +ACI2 Current
337 337  )))|DIDORO*|(((
338 338  Reserve
339 339  )))|MOD
340 340  )))
341 341  
342 -
343 343  (((
344 -
345 -
346 346  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
347 347  
348 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
349 -|bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
251 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
252 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
350 350  |RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
351 351  )))
352 352  
353 -
354 -* RO is for relay. ROx=1 : close，ROx=0 always open.
256 +* RO is for relay. ROx=1 : close, ROx=0 always open.
355 355  * DI is for digital input. DIx=1: high or float, DIx=0: low.
356 356  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
357 357  
... ... @@ -362,7 +362,7 @@
362 362  
363 363  **The value for the interface is:  **
364 364  
365 -AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
267 +AVI1 channel voltage is 0x04AB/1000=1195(DEC)/1000=1.195V
366 366  
367 367  AVI2 channel voltage is 0x04AC/1000=1.196V
368 368  
... ... @@ -399,56 +399,55 @@
399 399  
400 400  (((
401 401  Total : 11 bytes payload
304 +
305 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
306 +|(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**
307 +|Value|COUNT1|COUNT2 |DIDORO*|(((
308 +Reserve
309 +)))|MOD
402 402  )))
403 403  
404 -[[image:image-20220523180452-3.png]]
405 -
406 -
407 407  (((
408 408  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
409 -)))
410 410  
411 -[[image:image-20220523180506-4.png]]
315 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
316 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
317 +|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
412 412  
413 -* RO is for relay. ROx=1 : close，ROx=0 always open.
319 +RO is for relay. ROx=1 : close , ROx=0 always open.
320 +)))
321 +
414 414  * FIRST: Indicate this is the first packet after join network.
415 415  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
416 416  
417 417  (((
418 418  (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
419 -)))
420 420  
421 -(((
422 422  
329 +)))
423 423  
331 +(((
424 424  **To use counting mode, please run:**
425 425  )))
426 426  
335 +(((
427 427  (% class="box infomessage" %)
428 428  (((
429 -(((
430 -(((
431 431  **AT+MOD=2**
432 -)))
433 433  
434 -(((
435 435  **ATZ**
436 436  )))
437 437  )))
438 -)))
439 439  
440 440  (((
441 441  
442 442  
443 443  (% style="color:#4f81bd" %)**AT Commands for counting:**
444 -
445 -
446 446  )))
447 447  
448 448  (((
449 449  **For LT22222-L:**
450 450  
451 -
452 452  (% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
453 453  
454 454  (% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
... ... @@ -468,17 +468,23 @@
468 468  
469 469  **LT22222-L**: This mode the DI1 is used as a counting pin.
470 470  
471 -[[image:image-20220523181246-5.png]]
372 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
373 +|(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**
374 +|Value|COUNT1|(((
375 +ACI1 Current
376 +)))|(((
377 +ACI2 Current
378 +)))|DIDORO*|Reserve|MOD
472 472  
473 473  (((
474 -
475 -
476 476  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
382 +
383 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
384 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
385 +|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
477 477  )))
478 478  
479 -[[image:image-20220523181301-6.png]]
480 -
481 -* RO is for relay. ROx=1 : close，ROx=0 always open.
388 +* RO is for relay. ROx=1 : close, ROx=0 always open.
482 482  * FIRST: Indicate this is the first packet after join network.
483 483  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
484 484  
... ... @@ -491,18 +491,14 @@
491 491  **To use counting mode, please run:**
492 492  )))
493 493  
401 +(((
494 494  (% class="box infomessage" %)
495 495  (((
496 -(((
497 -(((
498 498  **AT+MOD=3**
499 -)))
500 500  
501 -(((
502 502  **ATZ**
503 503  )))
504 504  )))
505 -)))
506 506  
507 507  (((
508 508  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
... ... @@ -518,55 +518,52 @@
518 518  
519 519  (((
520 520  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.
424 +
425 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
426 +|(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**4**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**
427 +|Value|COUNT1|AVI1 Counting|DIDORO*|(((
428 +Reserve
429 +)))|MOD
521 521  )))
522 522  
523 -[[image:image-20220523181903-8.png]]
524 -
525 -
526 526  (((
527 527  (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
434 +
435 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
436 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
437 +|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
528 528  )))
529 529  
530 -[[image:image-20220523181727-7.png]]
531 -
532 -* RO is for relay. ROx=1 : close，ROx=0 always open.
440 +* RO is for relay. ROx=1 : close, ROx=0 always open.
533 533  * FIRST: Indicate this is the first packet after join network.
534 534  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
535 535  
536 536  (((
537 537  (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
538 -)))
539 539  
540 -(((
541 541  
448 +)))
542 542  
450 +(((
543 543  **To use this mode, please run:**
544 544  )))
545 545  
454 +(((
546 546  (% class="box infomessage" %)
547 547  (((
548 -(((
549 -(((
550 550  **AT+MOD=4**
551 -)))
552 552  
553 -(((
554 554  **ATZ**
555 555  )))
556 556  )))
557 -)))
558 558  
559 -
560 560  (((
561 561  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
562 562  )))
563 563  
564 564  (((
565 -
566 -
567 567  **Plus below command for AVI1 Counting:**
568 568  
569 -
570 570  (% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
571 571  
572 572  (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
... ... @@ -582,15 +582,27 @@
582 582  
583 583  **LT22222-L**: This mode the DI1 is used as a counting pin.
584 584  
585 -[[image:image-20220523182334-9.png]]
485 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
486 +|(% style="background-color:#4f81bd; color:white" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**2**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**|(% style="background-color:#4f81bd; color:white" %)**1**
487 +|Value|(((
488 +AVI1 voltage
489 +)))|(((
490 +AVI2 voltage
491 +)))|(((
492 +ACI1 Current
493 +)))|COUNT1|DIDORO*|(((
494 +Reserve
495 +)))|MOD
586 586  
587 587  (((
588 -
589 -
590 590  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
499 +
500 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
501 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
502 +|RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
591 591  )))
592 592  
593 -* RO is for relay. ROx=1 : close，ROx=0 always open.
505 +* RO is for relay. ROx=1 : close, ROx=0 always open.
594 594  * FIRST: Indicate this is the first packet after join network.
595 595  * (((
596 596  DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
... ... @@ -601,23 +601,17 @@
601 601  )))
602 602  
603 603  (((
604 -
605 -
606 606  **To use this mode, please run:**
607 607  )))
608 608  
519 +(((
609 609  (% class="box infomessage" %)
610 610  (((
611 -(((
612 -(((
613 613  **AT+MOD=5**
614 -)))
615 615  
616 -(((
617 617  **ATZ**
618 618  )))
619 619  )))
620 -)))
621 621  
622 622  (((
623 623  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
... ... @@ -712,12 +712,39 @@
712 712  
713 713  MOD6 Payload : total 11 bytes payload
714 714  
715 -[[image:image-20220524085923-1.png]]
621 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
622 +|(% style="background-color:#4f81bd; color:white; width:60px" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white; width:69px" %)**1**|(% style="background-color:#4f81bd; color:white; width:69px" %)**1**|(% style="background-color:#4f81bd; color:white; width:109px" %)**1**|(% style="background-color:#4f81bd; color:white; width:49px" %)**6**|(% style="background-color:#4f81bd; color:white; width:109px" %)**1**|(% style="background-color:#4f81bd; color:white; width:50px" %)**1**
623 +|Value|(((
624 +TRI_A FLAG
625 +)))|(((
626 +TRI_A Status
627 +)))|(((
628 +TRI_DI FLAG+STA
629 +)))|Reserve|Enable/Disable MOD6|(((
630 +MOD(6)
631 +)))
716 716  
717 -
718 718  (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
719 719  
720 -[[image:image-20220524090106-2.png]]
635 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
636 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
637 +|(((
638 +AV1_LOW
639 +)))|(((
640 +AV1_HIGH
641 +)))|(((
642 +AV2_LOW
643 +)))|(((
644 +AV2_HIGH
645 +)))|(((
646 +AC1_LOW
647 +)))|(((
648 +AC1_HIGH
649 +)))|(((
650 +AC2_LOW
651 +)))|(((
652 +AC2_HIGH
653 +)))
721 721  
722 722  * Each bits shows if the corresponding trigger has been configured.
723 723  
... ... @@ -726,10 +726,27 @@
726 726  10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
727 727  
728 728  
729 -
730 730  (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
731 731  
732 -[[image:image-20220524090249-3.png]]
664 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
665 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
666 +|(((
667 +AV1_LOW
668 +)))|(((
669 +AV1_HIGH
670 +)))|(((
671 +AV2_LOW
672 +)))|(((
673 +AV2_HIGH
674 +)))|(((
675 +AC1_LOW
676 +)))|(((
677 +AC1_HIGH
678 +)))|(((
679 +AC2_LOW
680 +)))|(((
681 +AC2_HIGH
682 +)))
733 733  
734 734  * Each bits shows which status has been trigger on this uplink.
735 735  
... ... @@ -740,7 +740,9 @@
740 740  
741 741  (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
742 742  
743 -[[image:image-20220524090456-4.png]]
693 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
694 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
695 +|N/A|N/A|N/A|N/A|DI2_STATUS|DI2_FLAG|DI1_STATUS|DI1_FLAG
744 744  
745 745  * Each bits shows which status has been trigger on this uplink.
746 746  
... ... @@ -820,14 +820,10 @@
820 820  
821 821  Set work mode.
822 822  
823 -* (% style="color:#037691" %)**AT Command:**
775 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+MOD=N  **
824 824  
825 -(% style="color:blue" %)**AT+MOD=N  **
826 -
827 -
828 828  **Example**: AT+MOD=2. Set work mode to Double DI counting mode
829 829  
830 -
831 831  * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
832 832  
833 833  (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
... ... @@ -837,16 +837,12 @@
837 837  ==== 3.4.2.3 Poll an uplink ====
838 838  
839 839  
840 -* (% style="color:#037691" %)**AT Command:**
788 +* (% style="color:#037691" %)**AT Command:**(%%) There is no AT Command to poll uplink
841 841  
842 -There is no AT Command to poll uplink
843 -
844 -
845 845  * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
846 846  
847 847  (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
848 848  
849 -
850 850  **Example**: 0x08FF, ask device to send an Uplink
851 851  
852 852  
... ... @@ -856,10 +856,8 @@
856 856  
857 857  Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
858 858  
859 -* (% style="color:#037691" %)**AT Command:**
803 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
860 860  
861 -(% style="color:blue" %)**AT+ADDMOD6=1 or 0**
862 -
863 863  (% style="color:red" %)**1:** (%%)Enable Trigger Mode
864 864  
865 865  (% style="color:red" %)**0: **(%%)Disable Trigger Mode
... ... @@ -874,13 +874,12 @@
874 874  ==== 3.4.2.5 Poll trigger settings ====
875 875  
876 876  
877 -Poll trigger settings,
819 +Poll trigger settings
878 878  
879 879  * (% style="color:#037691" %)**AT Command:**
880 880  
881 881  There is no AT Command for this feature.
882 882  
883 -
884 884  * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
885 885  
886 886  (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
... ... @@ -892,15 +892,11 @@
892 892  
893 893  Enable Disable DI1/DI2/DI2 as trigger,
894 894  
895 -* (% style="color:#037691" %)**AT Command:**
836 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
896 896  
897 -(% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
838 +**Example:** AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
898 898  
899 899  
900 -**Example:**
901 -
902 -AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
903 -
904 904  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
905 905  
906 906  (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
... ... @@ -912,20 +912,15 @@
912 912  
913 913  Set DI1 or DI3(for LT-33222-L) trigger.
914 914  
915 -* (% style="color:#037691" %)**AT Command:**
852 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+TRIG1=a,b**
916 916  
917 -(% style="color:blue" %)**AT+TRIG1=a,b**
918 -
919 919  (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
920 920  
921 921  (% style="color:red" %)**b :** (%%)delay timing.
922 922  
858 +**Example:** AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
923 923  
924 -**Example:**
925 925  
926 -AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
927 -
928 -
929 929  * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
930 930  
931 931  (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
... ... @@ -937,20 +937,15 @@
937 937  
938 938  Set DI2 trigger.
939 939  
940 -* (% style="color:#037691" %)**AT Command:**
872 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+TRIG2=a,b**
941 941  
942 -(% style="color:blue" %)**AT+TRIG2=a,b**
943 -
944 944  (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
945 945  
946 946  (% style="color:red" %)**b :** (%%)delay timing.
947 947  
878 +**Example:** AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
948 948  
949 -**Example:**
950 950  
951 -AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
952 -
953 -
954 954  * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
955 955  
956 956  (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
... ... @@ -962,11 +962,8 @@
962 962  
963 963  Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
964 964  
965 -* (% style="color:#037691" %)**AT Command**
892 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+ACLIM**
966 966  
967 -(% style="color:blue" %)**AT+ACLIM**
968 -
969 -
970 970  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
971 971  
972 972  (% 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"]]
... ... @@ -978,11 +978,8 @@
978 978  
979 979  Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
980 980  
981 -* (% style="color:#037691" %)**AT Command**
905 +* (% style="color:#037691" %)**AT Command**(%%): (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
982 982  
983 -(% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
984 -
985 -
986 986  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
987 987  
988 988  (% 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"]]
... ... @@ -994,18 +994,13 @@
994 994  
995 995  Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
996 996  
997 -* (% style="color:#037691" %)**AT Command**
918 +* (% 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.
998 998  
999 -(% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
1000 -
1001 -
1002 1002  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
1003 1003  
1004 1004  (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
1005 1005  
1006 1006  (((
1007 -
1008 -
1009 1009  (% style="color:red" %)**Note: ATDC setting must be more than 5min**
1010 1010  )))
1011 1011  
... ... @@ -1020,8 +1020,9 @@
1020 1020  
1021 1021  
1022 1022  * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1023 -* (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1024 1024  
940 +(% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
941 +
1025 1025  (((
1026 1026  If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1027 1027  )))
... ... @@ -1028,10 +1028,14 @@
1028 1028  
1029 1029  (((
1030 1030  01: Low,  00: High ,  11: No action
948 +
949 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
950 +|(% style="background-color:#4f81bd; color:white" %)**Downlink Code**|(% style="background-color:#4f81bd; color:white" %)**DO1**|(% style="background-color:#4f81bd; color:white" %)**DO2**|(% style="background-color:#4f81bd; color:white" %)**DO3**
951 +|02  01  00  11|Low|High|No Action
952 +|02  00  11  01|High|No Action|Low
953 +|02  11  01  00|No Action|Low|High
1031 1031  )))
1032 1032  
1033 -[[image:image-20220524092754-5.png]]
1034 -
1035 1035  (((
1036 1036  (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1037 1037  )))
... ... @@ -1068,24 +1068,31 @@
1068 1068  
1069 1069  (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1070 1070  
1071 -[[image:image-20220524093238-6.png]]
992 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
993 +|(% style="background-color:#4f81bd; color:white" %)**Second Byte**|(% style="background-color:#4f81bd; color:white" %)**Status**
994 +|0x01|DO1 set to low
995 +|0x00|DO1 set to high
996 +|0x11|DO1 NO Action
1072 1072  
1073 -
1074 1074  (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1075 1075  
1076 -[[image:image-20220524093328-7.png]]
1000 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1001 +|(% style="background-color:#4f81bd; color:white" %)**Second Byte**|(% style="background-color:#4f81bd; color:white" %)**Status**
1002 +|0x01|DO2 set to low
1003 +|0x00|DO2 set to high
1004 +|0x11|DO2 NO Action
1077 1077  
1078 -
1079 1079  (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1080 1080  
1081 -[[image:image-20220524093351-8.png]]
1008 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1009 +|(% style="background-color:#4f81bd; color:white" %)**Second Byte**|(% style="background-color:#4f81bd; color:white" %)**Status**
1010 +|0x01|DO3 set to low
1011 +|0x00|DO3 set to high
1012 +|0x11|DO3 NO Action
1082 1082  
1014 +(% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:(%%) Latching time. Unit: ms
1083 1083  
1084 -(% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
1085 1085  
1086 - Latching time. Unit: ms
1087 -
1088 -
1089 1089  (% style="color:red" %)**Note: **
1090 1090  
1091 1091   Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
... ... @@ -1092,7 +1092,6 @@
1092 1092  
1093 1093   Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1094 1094  
1095 -
1096 1096  (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1097 1097  
1098 1098  
... ... @@ -1116,7 +1116,7 @@
1116 1116  
1117 1117  
1118 1118  
1119 -==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1046 +==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
1120 1120  
1121 1121  
1122 1122  * (% style="color:#037691" %)**AT Command:**
... ... @@ -1134,11 +1134,18 @@
1134 1134  )))
1135 1135  
1136 1136  (((
1137 -01: Close ,  00: Open , 11: No action
1138 -)))
1064 +00: Close ,  01: Open , 11: No action
1139 1139  
1140 -(((
1141 -[[image:image-20230426161322-1.png]]
1066 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1067 +|(% style="background-color:#4f81bd; color:white" %)**Downlink Code**|(% style="background-color:#4f81bd; color:white" %)**RO1**|(% style="background-color:#4f81bd; color:white" %)**RO2**
1068 +|03  00  11|Open|No Action
1069 +|03  01  11|Close|No Action
1070 +|03  11  00|No Action|Open
1071 +|03  11  01|No Action|Close
1072 +|03  00  00|Open|Open
1073 +|03  01  01|Close|Close
1074 +|03  01  00|Close|Open
1075 +|03  00  01|Open|Close
1142 1142  )))
1143 1143  
1144 1144  (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
... ... @@ -1212,11 +1212,8 @@
1212 1212  
1213 1213  When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1214 1214  
1215 -* (% style="color:#037691" %)**AT Command:**
1149 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1216 1216  
1217 -(% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1218 -
1219 -
1220 1220  * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1221 1221  
1222 1222  (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
... ... @@ -1226,10 +1226,8 @@
1226 1226  ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1227 1227  
1228 1228  
1229 -* (% style="color:#037691" %)**AT Command:**
1160 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1230 1230  
1231 -(% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1232 -
1233 1233  (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1234 1234  
1235 1235  (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
... ... @@ -1246,11 +1246,8 @@
1246 1246  
1247 1247  Clear counting for counting mode
1248 1248  
1249 -* (% style="color:#037691" %)**AT Command:**
1178 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+CLRCOUNT         **(%%) ~/~/ clear all counting
1250 1250  
1251 -(% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1252 -
1253 -
1254 1254  * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1255 1255  
1256 1256  (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
... ... @@ -1402,7 +1402,7 @@
1402 1402  
1403 1403  (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1404 1404  
1405 -(% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1331 +(% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L) and add DevEUI.(% style="display:none" %)
1406 1406  
1407 1407  Search under The things network
1408 1408  
... ... @@ -1409,7 +1409,6 @@
1409 1409  [[image:1653356838789-523.png||height="337" width="740"]]
1410 1410  
1411 1411  
1412 -
1413 1413  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1414 1414  
1415 1415  [[image:image-20220524094909-1.png||height="335" width="729"]]
... ... @@ -1441,12 +1441,12 @@
1441 1441  
1442 1442  
1443 1443  (((
1444 -The DI port of LT-22222-L can support NPN or PNP output sensor.
1369 +The DI port of LT-22222-L can support **NPN** or **PNP** or **Dry Contact** output sensor.
1445 1445  )))
1446 1446  
1447 1447  (((
1448 1448  (((
1449 -Internal circuit as below, the NEC2501 is a photocoupler, the Active current (from NEC2501 pin 1 to pin 2 is 1ma and the max current is 50mA. When there is active current pass NEC2501 pin1 to pin2. The DI will be active high.
1374 +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.
1450 1450  
1451 1451  
1452 1452  )))
... ... @@ -1554,6 +1554,19 @@
1554 1554  )))
1555 1555  
1556 1556  
1482 +(% style="color:blue" %)**Example4**(%%): Connect to Dry Contact sensor
1483 +
1484 +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.
1485 +
1486 +To detect a Dry Contact, we can provide a power source to one pin of the Dry Contact. Below is a reference connection.
1487 +
1488 +[[image:image-20230616235145-1.png]]
1489 +
1490 +(% style="color:blue" %)**Example5**(%%): Connect to Open Colleactor
1491 +
1492 +[[image:image-20240219115718-1.png]]
1493 +
1494 +
1557 1557  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1558 1558  
1559 1559  
... ... @@ -1587,7 +1587,6 @@
1587 1587  
1588 1588  **Black:  GND**
1589 1589  
1590 -
1591 1591  **Connection diagram:**
1592 1592  
1593 1593  [[image:1653357640609-758.png]]
... ... @@ -1595,6 +1595,22 @@
1595 1595  [[image:1653357648330-671.png||height="155" width="733"]]
1596 1596  
1597 1597  
1535 +Example connected to a regulated power supply to measure voltage
1536 +
1537 +[[image:image-20230608101532-1.png||height="606" width="447"]]
1538 +
1539 +[[image:image-20230608101608-2.jpeg||height="379" width="284"]]
1540 +
1541 +[[image:image-20230608101722-3.png||height="102" width="1139"]]
1542 +
1543 +
1544 +(% style="color:blue; font-weight:bold" %)**Specifications of the regulated power**(%%) (% style="color:blue" %)**:**
1545 +
1546 +(% style="color:red" %)**Red:  12~~24v**
1547 +
1548 +**Black:  GND**
1549 +
1550 +
1598 1598  === 3.6.5 Relay Output ===
1599 1599  
1600 1600  
... ... @@ -1613,9 +1613,34 @@
1613 1613  == 3.7 LEDs Indicators ==
1614 1614  
1615 1615  
1616 -[[image:image-20220524100748-11.png]]
1569 +(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
1570 +|(% style="background-color:#4f81bd; color:white; width:50px" %)**LEDs**|(% style="background-color:#4f81bd; color:white; width:460px" %)**Feature**
1571 +|**PWR**|Always on if there is power
1572 +|**TX**|(((
1573 +(((
1574 +Device boot: TX blinks 5 times.
1575 +)))
1617 1617  
1577 +(((
1578 +Successful join network: TX ON for 5 seconds.
1579 +)))
1618 1618  
1581 +(((
1582 +Transmit a LoRa packet: TX blinks once
1583 +)))
1584 +)))
1585 +|**RX**|RX blinks once when receive a packet.
1586 +|**DO1**|For LT-22222-L: ON when DO1 is low, LOW when DO1 is high
1587 +|**DO2**|For LT-22222-L: ON when DO2 is low, LOW when DO2 is high
1588 +|**DI1**|(((
1589 +For LT-22222-L: ON when DI1 is high, LOW when DI1 is low
1590 +)))
1591 +|**DI2**|(((
1592 +For LT-22222-L: ON when DI2 is high, OFF when DI2 is low
1593 +)))
1594 +|**RO1**|For LT-22222-L: ON when RO1 is closed, LOW when RO1 is open
1595 +|**RO2**|For LT-22222-L: ON when RO2 is closed, LOW when RO2 is open
1596 +
1619 1619  = 4. Use AT Command =
1620 1620  
1621 1621  == 4.1 Access AT Command ==
... ... @@ -1625,10 +1625,6 @@
1625 1625  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.
1626 1626  )))
1627 1627  
1628 -(((
1629 -
1630 -)))
1631 -
1632 1632  [[image:1653358238933-385.png]]
1633 1633  
1634 1634  
... ... @@ -1947,8 +1947,6 @@
1947 1947  dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1948 1948  
1949 1949  **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.**
1950 -
1951 -
1952 1952  )))
1953 1953  
1954 1954  (((
... ... @@ -1955,9 +1955,6 @@
1955 1955  [[image:1653359097980-169.png||height="188" width="729"]]
1956 1956  )))
1957 1957  
1958 -(((
1959 -
1960 -)))
1961 1961  
1962 1962  === 4.2.3 Change to Class A ===
1963 1963  
... ... @@ -1965,8 +1965,9 @@
1965 1965  (((
1966 1966  (% style="color:blue" %)**If sensor JOINED:**
1967 1967  
1968 -(% style="background-color:#dcdcdc" %)**AT+CLASS=A
1969 -ATZ**
1937 +(% style="background-color:#dcdcdc" %)**AT+CLASS=A**
1938 +
1939 +(% style="background-color:#dcdcdc" %)**ATZ**
1970 1970  )))
1971 1971  
1972 1972  
... ... @@ -1996,7 +1996,7 @@
1996 1996  
1997 1997  (((
1998 1998  (% 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]].
1999 -(% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:https://www.dropbox.com/sh/g99v0fxcltn9r1y/AADKXQ2v5ZT-S3sxdmbvE7UAa/LT-22222-L/image?dl=0&subfolder_nav_tracking=1]].
1969 +(% 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]].
2000 2000  (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
2001 2001  
2002 2002  
... ... @@ -2019,7 +2019,6 @@
2019 2019  
2020 2020  (% 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:
2021 2021  
2022 -
2023 2023  [[image:1653360054704-518.png||height="186" width="745"]]
2024 2024  
2025 2025  
... ... @@ -2083,13 +2083,21 @@
2083 2083  
2084 2084  (((
2085 2085  (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2055 +
2086 2086  (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2057 +
2087 2087  (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2059 +
2088 2088  (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2061 +
2089 2089  (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2063 +
2090 2090  (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2065 +
2091 2091  (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2067 +
2092 2092  (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2069 +
2093 2093  (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2094 2094  )))
2095 2095  
... ... @@ -2101,7 +2101,7 @@
2101 2101  [[image:1653360498588-932.png||height="485" width="726"]]
2102 2102  
2103 2103  
2104 -== 6.4 How to change the uplink interval？ ==
2081 +== 6.4 How to change the uplink interval? ==
2105 2105  
2106 2106  
2107 2107  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/]]
... ... @@ -2150,6 +2150,12 @@
2150 2150  Firmware version needs to be no less than 1.6.0.
2151 2151  
2152 2152  
2130 +== 6.10 Why does the LT22222 always report 15.585V when measuring AVI? ==
2131 +
2132 +
2133 +It is likely that the GND is not connected during the measurement, or the wire connected to the GND is loose.
2134 +
2135 +
2153 2153  = 7. Trouble Shooting =
2154 2154  )))
2155 2155  
... ... @@ -2190,6 +2190,13 @@
2190 2190  )))
2191 2191  
2192 2192  
2176 +== 7.4 Why can LT22222 perform Uplink normally, but cannot receive Downlink? ==
2177 +
2178 +
2179 +The FCD count of the gateway is inconsistent with the FCD count of the node, causing the downlink to remain in the queue state.
2180 +Use this command to bring their counts back together: [[Resets the downlink packet count>>||anchor="H3.4.2.23Resetsthedownlinkpacketcount"]]
2181 +
2182 +
2193 2193  = 8. Order Info =
2194 2194  
2195 2195  
... ... @@ -2231,7 +2231,7 @@
2231 2231  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.
2232 2232  )))
2233 2233  * (((
2234 -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.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
2224 +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]]
2235 2235  
2236 2236  
2237 2237  
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