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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 118.4
edited by Xiaoling
on 2023/05/17 10:50
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To version 135.1
edited by Mengting Qiu
on 2024/09/02 17:56
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  
... ... @@ -400,25 +400,21 @@
400 400  (((
401 401  Total : 11 bytes payload
402 402  
403 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
404 -|Size(bytes)|4|4|1|1|1
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**
405 405  |Value|COUNT1|COUNT2 |DIDORO*|(((
406 -Reserve
407 -
408 -
308 +Reserve
409 409  )))|MOD
410 410  )))
411 411  
412 412  (((
413 -
414 -
415 415  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
416 416  
417 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
418 -|bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
315 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
316 +|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
419 419  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
420 420  
421 -RO is for relay. ROx=1 : close，ROx=0 always open.
319 +RO is for relay. ROx=1 : close , ROx=0 always open.
422 422  )))
423 423  
424 424  * FIRST: Indicate this is the first packet after join network.
... ... @@ -426,39 +426,32 @@
426 426  
427 427  (((
428 428  (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
429 -)))
430 430  
431 -(((
432 432  
329 +)))
433 433  
331 +(((
434 434  **To use counting mode, please run:**
435 435  )))
436 436  
335 +(((
437 437  (% class="box infomessage" %)
438 438  (((
439 -(((
440 -(((
441 441  **AT+MOD=2**
442 -)))
443 443  
444 -(((
445 445  **ATZ**
446 446  )))
447 447  )))
448 -)))
449 449  
450 450  (((
451 451  
452 452  
453 453  (% style="color:#4f81bd" %)**AT Commands for counting:**
454 -
455 -
456 456  )))
457 457  
458 458  (((
459 459  **For LT22222-L:**
460 460  
461 -
462 462  (% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
463 463  
464 464  (% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
... ... @@ -478,17 +478,23 @@
478 478  
479 479  **LT22222-L**: This mode the DI1 is used as a counting pin.
480 480  
481 -[[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
482 482  
483 483  (((
484 -
485 -
486 486  (% 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
487 487  )))
488 488  
489 -[[image:image-20220523181301-6.png]]
490 -
491 -* RO is for relay. ROx=1 : close，ROx=0 always open.
388 +* RO is for relay. ROx=1 : close, ROx=0 always open.
492 492  * FIRST: Indicate this is the first packet after join network.
493 493  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
494 494  
... ... @@ -501,18 +501,14 @@
501 501  **To use counting mode, please run:**
502 502  )))
503 503  
401 +(((
504 504  (% class="box infomessage" %)
505 505  (((
506 -(((
507 -(((
508 508  **AT+MOD=3**
509 -)))
510 510  
511 -(((
512 512  **ATZ**
513 513  )))
514 514  )))
515 -)))
516 516  
517 517  (((
518 518  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
... ... @@ -528,55 +528,52 @@
528 528  
529 529  (((
530 530  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
531 531  )))
532 532  
533 -[[image:image-20220523181903-8.png]]
534 -
535 -
536 536  (((
537 537  (% 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
538 538  )))
539 539  
540 -[[image:image-20220523181727-7.png]]
541 -
542 -* RO is for relay. ROx=1 : close，ROx=0 always open.
440 +* RO is for relay. ROx=1 : close, ROx=0 always open.
543 543  * FIRST: Indicate this is the first packet after join network.
544 544  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
545 545  
546 546  (((
547 547  (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
548 -)))
549 549  
550 -(((
551 551  
448 +)))
552 552  
450 +(((
553 553  **To use this mode, please run:**
554 554  )))
555 555  
454 +(((
556 556  (% class="box infomessage" %)
557 557  (((
558 -(((
559 -(((
560 560  **AT+MOD=4**
561 -)))
562 562  
563 -(((
564 564  **ATZ**
565 565  )))
566 566  )))
567 -)))
568 568  
569 -
570 570  (((
571 571  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
572 572  )))
573 573  
574 574  (((
575 -
576 -
577 577  **Plus below command for AVI1 Counting:**
578 578  
579 -
580 580  (% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
581 581  
582 582  (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
... ... @@ -592,15 +592,27 @@
592 592  
593 593  **LT22222-L**: This mode the DI1 is used as a counting pin.
594 594  
595 -[[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
596 596  
597 597  (((
598 -
599 -
600 600  (% 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
601 601  )))
602 602  
603 -* RO is for relay. ROx=1 : close，ROx=0 always open.
505 +* RO is for relay. ROx=1 : close, ROx=0 always open.
604 604  * FIRST: Indicate this is the first packet after join network.
605 605  * (((
606 606  DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
... ... @@ -611,23 +611,17 @@
611 611  )))
612 612  
613 613  (((
614 -
615 -
616 616  **To use this mode, please run:**
617 617  )))
618 618  
519 +(((
619 619  (% class="box infomessage" %)
620 620  (((
621 -(((
622 -(((
623 623  **AT+MOD=5**
624 -)))
625 625  
626 -(((
627 627  **ATZ**
628 628  )))
629 629  )))
630 -)))
631 631  
632 632  (((
633 633  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
... ... @@ -722,12 +722,39 @@
722 722  
723 723  MOD6 Payload : total 11 bytes payload
724 724  
725 -[[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 +)))
726 726  
727 -
728 728  (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
729 729  
730 -[[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 +)))
731 731  
732 732  * Each bits shows if the corresponding trigger has been configured.
733 733  
... ... @@ -736,10 +736,27 @@
736 736  10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
737 737  
738 738  
739 -
740 740  (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
741 741  
742 -[[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 +)))
743 743  
744 744  * Each bits shows which status has been trigger on this uplink.
745 745  
... ... @@ -750,7 +750,9 @@
750 750  
751 751  (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
752 752  
753 -[[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
754 754  
755 755  * Each bits shows which status has been trigger on this uplink.
756 756  
... ... @@ -830,14 +830,10 @@
830 830  
831 831  Set work mode.
832 832  
833 -* (% style="color:#037691" %)**AT Command:**
775 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+MOD=N  **
834 834  
835 -(% style="color:blue" %)**AT+MOD=N  **
836 -
837 -
838 838  **Example**: AT+MOD=2. Set work mode to Double DI counting mode
839 839  
840 -
841 841  * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
842 842  
843 843  (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
... ... @@ -847,16 +847,12 @@
847 847  ==== 3.4.2.3 Poll an uplink ====
848 848  
849 849  
850 -* (% style="color:#037691" %)**AT Command:**
788 +* (% style="color:#037691" %)**AT Command:**(%%) There is no AT Command to poll uplink
851 851  
852 -There is no AT Command to poll uplink
853 -
854 -
855 855  * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
856 856  
857 857  (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
858 858  
859 -
860 860  **Example**: 0x08FF, ask device to send an Uplink
861 861  
862 862  
... ... @@ -866,10 +866,8 @@
866 866  
867 867  Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
868 868  
869 -* (% style="color:#037691" %)**AT Command:**
803 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
870 870  
871 -(% style="color:blue" %)**AT+ADDMOD6=1 or 0**
872 -
873 873  (% style="color:red" %)**1:** (%%)Enable Trigger Mode
874 874  
875 875  (% style="color:red" %)**0: **(%%)Disable Trigger Mode
... ... @@ -884,13 +884,12 @@
884 884  ==== 3.4.2.5 Poll trigger settings ====
885 885  
886 886  
887 -Poll trigger settings,
819 +Poll trigger settings
888 888  
889 889  * (% style="color:#037691" %)**AT Command:**
890 890  
891 891  There is no AT Command for this feature.
892 892  
893 -
894 894  * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
895 895  
896 896  (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
... ... @@ -902,15 +902,11 @@
902 902  
903 903  Enable Disable DI1/DI2/DI2 as trigger,
904 904  
905 -* (% style="color:#037691" %)**AT Command:**
836 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
906 906  
907 -(% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
838 +**Example:** AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
908 908  
909 909  
910 -**Example:**
911 -
912 -AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
913 -
914 914  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
915 915  
916 916  (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
... ... @@ -922,20 +922,15 @@
922 922  
923 923  Set DI1 or DI3(for LT-33222-L) trigger.
924 924  
925 -* (% style="color:#037691" %)**AT Command:**
852 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+TRIG1=a,b**
926 926  
927 -(% style="color:blue" %)**AT+TRIG1=a,b**
928 -
929 929  (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
930 930  
931 931  (% style="color:red" %)**b :** (%%)delay timing.
932 932  
858 +**Example:** AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
933 933  
934 -**Example:**
935 935  
936 -AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
937 -
938 -
939 939  * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
940 940  
941 941  (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
... ... @@ -947,20 +947,15 @@
947 947  
948 948  Set DI2 trigger.
949 949  
950 -* (% style="color:#037691" %)**AT Command:**
872 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+TRIG2=a,b**
951 951  
952 -(% style="color:blue" %)**AT+TRIG2=a,b**
953 -
954 954  (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
955 955  
956 956  (% style="color:red" %)**b :** (%%)delay timing.
957 957  
878 +**Example:** AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
958 958  
959 -**Example:**
960 960  
961 -AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
962 -
963 -
964 964  * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
965 965  
966 966  (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
... ... @@ -972,11 +972,8 @@
972 972  
973 973  Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
974 974  
975 -* (% style="color:#037691" %)**AT Command**
892 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+ACLIM**
976 976  
977 -(% style="color:blue" %)**AT+ACLIM**
978 -
979 -
980 980  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
981 981  
982 982  (% 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"]]
... ... @@ -988,11 +988,8 @@
988 988  
989 989  Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
990 990  
991 -* (% style="color:#037691" %)**AT Command**
905 +* (% style="color:#037691" %)**AT Command**(%%): (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
992 992  
993 -(% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
994 -
995 -
996 996  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
997 997  
998 998  (% 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"]]
... ... @@ -1004,18 +1004,13 @@
1004 1004  
1005 1005  Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
1006 1006  
1007 -* (% 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.
1008 1008  
1009 -(% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
1010 -
1011 -
1012 1012  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
1013 1013  
1014 1014  (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
1015 1015  
1016 1016  (((
1017 -
1018 -
1019 1019  (% style="color:red" %)**Note: ATDC setting must be more than 5min**
1020 1020  )))
1021 1021  
... ... @@ -1030,8 +1030,9 @@
1030 1030  
1031 1031  
1032 1032  * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1033 -* (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
1034 1034  
940 +(% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
941 +
1035 1035  (((
1036 1036  If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
1037 1037  )))
... ... @@ -1038,10 +1038,14 @@
1038 1038  
1039 1039  (((
1040 1040  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
1041 1041  )))
1042 1042  
1043 -[[image:image-20220524092754-5.png]]
1044 -
1045 1045  (((
1046 1046  (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
1047 1047  )))
... ... @@ -1078,24 +1078,31 @@
1078 1078  
1079 1079  (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1080 1080  
1081 -[[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
1082 1082  
1083 -
1084 1084  (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1085 1085  
1086 -[[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
1087 1087  
1088 -
1089 1089  (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1090 1090  
1091 -[[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
1092 1092  
1014 +(% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:(%%) Latching time. Unit: ms
1093 1093  
1094 -(% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
1095 1095  
1096 - Latching time. Unit: ms
1097 -
1098 -
1099 1099  (% style="color:red" %)**Note: **
1100 1100  
1101 1101   Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
... ... @@ -1102,7 +1102,6 @@
1102 1102  
1103 1103   Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1104 1104  
1105 -
1106 1106  (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1107 1107  
1108 1108  
... ... @@ -1126,7 +1126,7 @@
1126 1126  
1127 1127  
1128 1128  
1129 -==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1046 +==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
1130 1130  
1131 1131  
1132 1132  * (% style="color:#037691" %)**AT Command:**
... ... @@ -1144,11 +1144,18 @@
1144 1144  )))
1145 1145  
1146 1146  (((
1147 -01: Close ,  00: Open , 11: No action
1148 -)))
1064 +00: Close ,  01: Open , 11: No action
1149 1149  
1150 -(((
1151 -[[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
1152 1152  )))
1153 1153  
1154 1154  (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
... ... @@ -1222,11 +1222,8 @@
1222 1222  
1223 1223  When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1224 1224  
1225 -* (% style="color:#037691" %)**AT Command:**
1149 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1226 1226  
1227 -(% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1228 -
1229 -
1230 1230  * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1231 1231  
1232 1232  (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
... ... @@ -1236,10 +1236,8 @@
1236 1236  ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1237 1237  
1238 1238  
1239 -* (% style="color:#037691" %)**AT Command:**
1160 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1240 1240  
1241 -(% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1242 -
1243 1243  (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1244 1244  
1245 1245  (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
... ... @@ -1256,11 +1256,8 @@
1256 1256  
1257 1257  Clear counting for counting mode
1258 1258  
1259 -* (% style="color:#037691" %)**AT Command:**
1178 +* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+CLRCOUNT         **(%%) ~/~/ clear all counting
1260 1260  
1261 -(% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1262 -
1263 -
1264 1264  * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1265 1265  
1266 1266  (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
... ... @@ -1412,7 +1412,7 @@
1412 1412  
1413 1413  (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1414 1414  
1415 -(% 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" %)
1416 1416  
1417 1417  Search under The things network
1418 1418  
... ... @@ -1419,7 +1419,6 @@
1419 1419  [[image:1653356838789-523.png||height="337" width="740"]]
1420 1420  
1421 1421  
1422 -
1423 1423  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1424 1424  
1425 1425  [[image:image-20220524094909-1.png||height="335" width="729"]]
... ... @@ -1451,12 +1451,12 @@
1451 1451  
1452 1452  
1453 1453  (((
1454 -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.
1455 1455  )))
1456 1456  
1457 1457  (((
1458 1458  (((
1459 -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.
1460 1460  
1461 1461  
1462 1462  )))
... ... @@ -1564,6 +1564,19 @@
1564 1564  )))
1565 1565  
1566 1566  
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 +
1567 1567  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1568 1568  
1569 1569  
... ... @@ -1597,7 +1597,6 @@
1597 1597  
1598 1598  **Black:  GND**
1599 1599  
1600 -
1601 1601  **Connection diagram:**
1602 1602  
1603 1603  [[image:1653357640609-758.png]]
... ... @@ -1605,6 +1605,22 @@
1605 1605  [[image:1653357648330-671.png||height="155" width="733"]]
1606 1606  
1607 1607  
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 +
1608 1608  === 3.6.5 Relay Output ===
1609 1609  
1610 1610  
... ... @@ -1623,9 +1623,34 @@
1623 1623  == 3.7 LEDs Indicators ==
1624 1624  
1625 1625  
1626 -[[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 +)))
1627 1627  
1577 +(((
1578 +Successful join network: TX ON for 5 seconds.
1579 +)))
1628 1628  
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, LOW when DI2 is low
1593 +)))
1594 +|**RO1**|
1595 +|**RO2**|
1596 +
1629 1629  = 4. Use AT Command =
1630 1630  
1631 1631  == 4.1 Access AT Command ==
... ... @@ -1635,10 +1635,6 @@
1635 1635  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.
1636 1636  )))
1637 1637  
1638 -(((
1639 -
1640 -)))
1641 -
1642 1642  [[image:1653358238933-385.png]]
1643 1643  
1644 1644  
... ... @@ -1957,8 +1957,6 @@
1957 1957  dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1958 1958  
1959 1959  **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.**
1960 -
1961 -
1962 1962  )))
1963 1963  
1964 1964  (((
... ... @@ -1965,9 +1965,6 @@
1965 1965  [[image:1653359097980-169.png||height="188" width="729"]]
1966 1966  )))
1967 1967  
1968 -(((
1969 -
1970 -)))
1971 1971  
1972 1972  === 4.2.3 Change to Class A ===
1973 1973  
... ... @@ -1975,8 +1975,9 @@
1975 1975  (((
1976 1976  (% style="color:blue" %)**If sensor JOINED:**
1977 1977  
1978 -(% style="background-color:#dcdcdc" %)**AT+CLASS=A
1979 -ATZ**
1937 +(% style="background-color:#dcdcdc" %)**AT+CLASS=A**
1938 +
1939 +(% style="background-color:#dcdcdc" %)**ATZ**
1980 1980  )))
1981 1981  
1982 1982  
... ... @@ -2006,7 +2006,7 @@
2006 2006  
2007 2007  (((
2008 2008  (% 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]].
2009 -(% 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]].
2010 2010  (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
2011 2011  
2012 2012  
... ... @@ -2029,7 +2029,6 @@
2029 2029  
2030 2030  (% 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:
2031 2031  
2032 -
2033 2033  [[image:1653360054704-518.png||height="186" width="745"]]
2034 2034  
2035 2035  
... ... @@ -2093,13 +2093,21 @@
2093 2093  
2094 2094  (((
2095 2095  (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2055 +
2096 2096  (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2057 +
2097 2097  (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2059 +
2098 2098  (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2061 +
2099 2099  (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2063 +
2100 2100  (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2065 +
2101 2101  (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2067 +
2102 2102  (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2069 +
2103 2103  (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2104 2104  )))
2105 2105  
... ... @@ -2111,7 +2111,7 @@
2111 2111  [[image:1653360498588-932.png||height="485" width="726"]]
2112 2112  
2113 2113  
2114 -== 6.4 How to change the uplink interval？ ==
2081 +== 6.4 How to change the uplink interval? ==
2115 2115  
2116 2116  
2117 2117  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/]]
... ... @@ -2160,6 +2160,12 @@
2160 2160  Firmware version needs to be no less than 1.6.0.
2161 2161  
2162 2162  
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 +
2163 2163  = 7. Trouble Shooting =
2164 2164  )))
2165 2165  
... ... @@ -2200,6 +2200,13 @@
2200 2200  )))
2201 2201  
2202 2202  
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 +
2203 2203  = 8. Order Info =
2204 2204  
2205 2205  
... ... @@ -2241,7 +2241,7 @@
2241 2241  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.
2242 2242  )))
2243 2243  * (((
2244 -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]]
2245 2245  
2246 2246  
2247 2247  
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