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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 135.1
edited by Mengting Qiu
on 2024/09/02 17:56
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To version 118.3
edited by Xiaoling
on 2023/05/17 10:48
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Summary

Details

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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.ting
1 +XWiki.Xiaoling
Content
... ... @@ -3,10 +3,6 @@
3 3  
4 4  
5 5  
6 -
7 -
8 -
9 -
10 10  **Table of Contents:**
11 11  
12 12  {{toc/}}
... ... @@ -57,71 +57,162 @@
57 57  
58 58  )))
59 59  
60 -== 1.2 Specifications ==
56 +== 1.2  Specifications ==
61 61  
58 +(((
59 +
60 +
62 62  (% style="color:#037691" %)**Hardware System:**
62 +)))
63 63  
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
64 +* (((
65 +STM32L072xxxx MCU
66 +)))
67 +* (((
68 +SX1276/78 Wireless Chip 
69 +)))
70 +* (((
71 +(((
72 +Power Consumption:
73 +)))
70 70  
75 +* (((
76 +Idle: 4mA@12v
77 +)))
78 +* (((
79 +20dB Transmit: 34mA@12v
80 +)))
81 +)))
82 +
83 +(((
84 +
85 +
71 71  (% style="color:#037691" %)**Interface for Model: LT22222-L:**
87 +)))
72 72  
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. 
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 +)))
79 79  
108 +(((
109 +
110 +
80 80  (% style="color:#037691" %)**LoRa Spec:**
112 +)))
81 81  
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.
114 +* (((
115 +(((
116 +Frequency Range:
117 +)))
100 100  
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 +
101 101  == 1.3 Features ==
102 102  
177 +
103 103  * LoRaWAN Class A & Class C protocol
179 +
104 104  * Optional Customized LoRa Protocol
181 +
105 105  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/RU864/IN865/MA869
183 +
106 106  * AT Commands to change parameters
185 +
107 107  * Remote configure parameters via LoRa Downlink
187 +
108 108  * Firmware upgradable via program port
189 +
109 109  * Counting
110 110  
111 -== 1.4 Applications ==
192 +== 1.4  Applications ==
112 112  
194 +
113 113  * Smart Buildings & Home Automation
196 +
114 114  * Logistics and Supply Chain Management
198 +
115 115  * Smart Metering
200 +
116 116  * Smart Agriculture
202 +
117 117  * Smart Cities
204 +
118 118  * Smart Factory
119 119  
120 120  == 1.5 Hardware Variants ==
121 121  
122 122  
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**
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**
125 125  |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
126 126  (% style="text-align:center" %)
127 127  [[image:image-20230424115112-1.png||height="106" width="58"]]
... ... @@ -136,10 +136,17 @@
136 136  
137 137  = 2. Power ON Device =
138 138  
226 +
227 +(((
139 139  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 +)))
140 140  
231 +(((
141 141  PWR will on when device is properly powered.
142 142  
234 +
235 +)))
236 +
143 143  [[image:1653297104069-180.png]]
144 144  
145 145  
... ... @@ -198,6 +198,7 @@
198 198  [[image:1653298023685-319.png]]
199 199  
200 200  
295 +
201 201  (((
202 202  (% 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.
203 203  
... ... @@ -213,15 +213,10 @@
213 213  There are five working modes + one interrupt mode on LT for different type application:
214 214  
215 215  * (% style="color:blue" %)**MOD1**(%%): (default setting): 2 x ACI + 2AVI + DI + DO + RO
216 -
217 217  * (% style="color:blue" %)**MOD2**(%%): Double DI Counting + DO + RO
218 -
219 219  * (% style="color:blue" %)**MOD3**(%%): Single DI Counting + 2 x ACI + DO + RO
220 -
221 221  * (% style="color:blue" %)**MOD4**(%%): Single DI Counting + 1 x Voltage Counting + DO + RO
222 -
223 223  * (% style="color:blue" %)**MOD5**(%%): Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
224 -
225 225  * (% style="color:blue" %)**ADDMOD6**(%%): Trigger Mode, Optional, used together with MOD1 ~~ MOD5
226 226  
227 227  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
... ... @@ -230,30 +230,38 @@
230 230  (((
231 231  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default. (% style="display:none" %)
232 232  
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**
323 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
324 +|Size(bytes)(% style="display:none" %) |2|2|2|2|1|1|1
235 235  |Value|(((
236 -AVI1 voltage
326 +AVI1
327 +voltage
237 237  )))|(((
238 -AVI2 voltage
329 +AVI2
330 +voltage
239 239  )))|(((
240 -ACI1 Current
332 +ACI1
333 +Current
241 241  )))|(((
242 -ACI2 Current
335 +ACI2
336 +Current
243 243  )))|DIDORO*|(((
244 244  Reserve
245 245  )))|MOD
246 246  )))
247 247  
342 +
248 248  (((
344 +
345 +
249 249  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
250 250  
251 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
252 -|**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
348 +(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
349 +|bit7|bit6|bit5|bit4|bit3|bit2|bit1|bit0
253 253  |RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
254 254  )))
255 255  
256 -* RO is for relay. ROx=1 : close, ROx=0 always open.
353 +
354 +* RO is for relay. ROx=1 : close，ROx=0 always open.
257 257  * DI is for digital input. DIx=1: high or float, DIx=0: low.
258 258  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
259 259  
... ... @@ -264,7 +264,7 @@
264 264  
265 265  **The value for the interface is:  **
266 266  
267 -AVI1 channel voltage is 0x04AB/1000=1195(DEC)/1000=1.195V
365 +AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
268 268  
269 269  AVI2 channel voltage is 0x04AC/1000=1.196V
270 270  
... ... @@ -301,55 +301,56 @@
301 301  
302 302  (((
303 303  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
310 310  )))
311 311  
312 -(((
313 -(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
404 +[[image:image-20220523180452-3.png]]
314 314  
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
318 318  
319 -RO is for relay. ROx=1 : close , ROx=0 always open.
407 +(((
408 +(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
320 320  )))
321 321  
411 +[[image:image-20220523180506-4.png]]
412 +
413 +* RO is for relay. ROx=1 : close，ROx=0 always open.
322 322  * FIRST: Indicate this is the first packet after join network.
323 323  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
324 324  
325 325  (((
326 326  (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
327 -
328 -
329 329  )))
330 330  
331 331  (((
422 +
423 +
332 332  **To use counting mode, please run:**
333 333  )))
334 334  
335 -(((
336 336  (% class="box infomessage" %)
337 337  (((
429 +(((
430 +(((
338 338  **AT+MOD=2**
432 +)))
339 339  
434 +(((
340 340  **ATZ**
341 341  )))
342 342  )))
438 +)))
343 343  
344 344  (((
345 345  
346 346  
347 347  (% style="color:#4f81bd" %)**AT Commands for counting:**
444 +
445 +
348 348  )))
349 349  
350 350  (((
351 351  **For LT22222-L:**
352 352  
451 +
353 353  (% style="color:blue" %)**AT+TRIG1=0,100**(%%)**  (set DI1 port to trigger on low level, valid signal is 100ms) **
354 354  
355 355  (% style="color:blue" %)**AT+TRIG1=1,100**(%%)**  (set DI1 port to trigger on high level, valid signal is 100ms ) **
... ... @@ -369,23 +369,17 @@
369 369  
370 370  **LT22222-L**: This mode the DI1 is used as a counting pin.
371 371  
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
471 +[[image:image-20220523181246-5.png]]
379 379  
380 380  (((
381 -(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
474 +
382 382  
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
476 +(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
386 386  )))
387 387  
388 -* RO is for relay. ROx=1 : close, ROx=0 always open.
479 +[[image:image-20220523181301-6.png]]
480 +
481 +* RO is for relay. ROx=1 : close，ROx=0 always open.
389 389  * FIRST: Indicate this is the first packet after join network.
390 390  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
391 391  
... ... @@ -398,14 +398,18 @@
398 398  **To use counting mode, please run:**
399 399  )))
400 400  
401 -(((
402 402  (% class="box infomessage" %)
403 403  (((
496 +(((
497 +(((
404 404  **AT+MOD=3**
499 +)))
405 405  
501 +(((
406 406  **ATZ**
407 407  )))
408 408  )))
505 +)))
409 409  
410 410  (((
411 411  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
... ... @@ -421,52 +421,55 @@
421 421  
422 422  (((
423 423  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
430 430  )))
431 431  
523 +[[image:image-20220523181903-8.png]]
524 +
525 +
432 432  (((
433 433  (% 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
438 438  )))
439 439  
440 -* RO is for relay. ROx=1 : close, ROx=0 always open.
530 +[[image:image-20220523181727-7.png]]
531 +
532 +* RO is for relay. ROx=1 : close，ROx=0 always open.
441 441  * FIRST: Indicate this is the first packet after join network.
442 442  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
443 443  
444 444  (((
445 445  (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
446 -
447 -
448 448  )))
449 449  
450 450  (((
541 +
542 +
451 451  **To use this mode, please run:**
452 452  )))
453 453  
454 -(((
455 455  (% class="box infomessage" %)
456 456  (((
548 +(((
549 +(((
457 457  **AT+MOD=4**
551 +)))
458 458  
553 +(((
459 459  **ATZ**
460 460  )))
461 461  )))
557 +)))
462 462  
559 +
463 463  (((
464 464  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
465 465  )))
466 466  
467 467  (((
565 +
566 +
468 468  **Plus below command for AVI1 Counting:**
469 469  
569 +
470 470  (% style="color:blue" %)**AT+SETCNT=3,60**(%%)**  (set AVI Count to 60)**
471 471  
472 472  (% style="color:blue" %)**AT+VOLMAX=20000**(%%)**  (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
... ... @@ -482,27 +482,15 @@
482 482  
483 483  **LT22222-L**: This mode the DI1 is used as a counting pin.
484 484  
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
585 +[[image:image-20220523182334-9.png]]
496 496  
497 497  (((
498 -(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
588 +
499 499  
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
590 +(% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
503 503  )))
504 504  
505 -* RO is for relay. ROx=1 : close, ROx=0 always open.
593 +* RO is for relay. ROx=1 : close，ROx=0 always open.
506 506  * FIRST: Indicate this is the first packet after join network.
507 507  * (((
508 508  DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
... ... @@ -513,17 +513,23 @@
513 513  )))
514 514  
515 515  (((
604 +
605 +
516 516  **To use this mode, please run:**
517 517  )))
518 518  
519 -(((
520 520  (% class="box infomessage" %)
521 521  (((
611 +(((
612 +(((
522 522  **AT+MOD=5**
614 +)))
523 523  
616 +(((
524 524  **ATZ**
525 525  )))
526 526  )))
620 +)))
527 527  
528 528  (((
529 529  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
... ... @@ -618,39 +618,12 @@
618 618  
619 619  MOD6 Payload : total 11 bytes payload
620 620  
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 -)))
715 +[[image:image-20220524085923-1.png]]
632 632  
717 +
633 633  (% style="color:#4f81bd" %)**TRI FLAG1**(%%) is a combination to show if trigger is set for this part. Totally 1byte as below
634 634  
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 -)))
720 +[[image:image-20220524090106-2.png]]
654 654  
655 655  * Each bits shows if the corresponding trigger has been configured.
656 656  
... ... @@ -659,27 +659,10 @@
659 659  10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
660 660  
661 661  
729 +
662 662  (% style="color:#4f81bd" %)**TRI Status1**(%%) is a combination to show which condition is trigger. Totally 1byte as below
663 663  
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 -)))
732 +[[image:image-20220524090249-3.png]]
683 683  
684 684  * Each bits shows which status has been trigger on this uplink.
685 685  
... ... @@ -690,9 +690,7 @@
690 690  
691 691  (% style="color:#4f81bd" %)**TRI_DI FLAG+STA **(%%)is a combination to show which condition is trigger. Totally 1byte as below
692 692  
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
743 +[[image:image-20220524090456-4.png]]
696 696  
697 697  * Each bits shows which status has been trigger on this uplink.
698 698  
... ... @@ -772,10 +772,14 @@
772 772  
773 773  Set work mode.
774 774  
775 -* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+MOD=N  **
823 +* (% style="color:#037691" %)**AT Command:**
776 776  
825 +(% style="color:blue" %)**AT+MOD=N  **
826 +
827 +
777 777  **Example**: AT+MOD=2. Set work mode to Double DI counting mode
778 778  
830 +
779 779  * (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
780 780  
781 781  (% style="color:blue" %)**0x0A aa  **(%%)** ** ~/~/ Same as AT+MOD=aa
... ... @@ -785,12 +785,16 @@
785 785  ==== 3.4.2.3 Poll an uplink ====
786 786  
787 787  
788 -* (% style="color:#037691" %)**AT Command:**(%%) There is no AT Command to poll uplink
840 +* (% style="color:#037691" %)**AT Command:**
789 789  
842 +There is no AT Command to poll uplink
843 +
844 +
790 790  * (% style="color:#037691" %)**Downlink Payload (prefix 0x08):**
791 791  
792 792  (% style="color:blue" %)**0x08 FF  **(%%)** **~/~/ Poll an uplink
793 793  
849 +
794 794  **Example**: 0x08FF, ask device to send an Uplink
795 795  
796 796  
... ... @@ -800,8 +800,10 @@
800 800  
801 801  Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
802 802  
803 -* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+ADDMOD6=1 or 0**
859 +* (% style="color:#037691" %)**AT Command:**
804 804  
861 +(% style="color:blue" %)**AT+ADDMOD6=1 or 0**
862 +
805 805  (% style="color:red" %)**1:** (%%)Enable Trigger Mode
806 806  
807 807  (% style="color:red" %)**0: **(%%)Disable Trigger Mode
... ... @@ -816,12 +816,13 @@
816 816  ==== 3.4.2.5 Poll trigger settings ====
817 817  
818 818  
819 -Poll trigger settings
877 +Poll trigger settings,
820 820  
821 821  * (% style="color:#037691" %)**AT Command:**
822 822  
823 823  There is no AT Command for this feature.
824 824  
883 +
825 825  * (% style="color:#037691" %)**Downlink Payload (prefix 0x AB 06):**
826 826  
827 827  (% style="color:blue" %)**0xAB 06  ** (%%) ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command
... ... @@ -833,11 +833,15 @@
833 833  
834 834  Enable Disable DI1/DI2/DI2 as trigger,
835 835  
836 -* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
895 +* (% style="color:#037691" %)**AT Command:**
837 837  
838 -**Example:** AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
897 +(% style="color:blue" %)**Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >**
839 839  
840 840  
900 +**Example:**
901 +
902 +AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
903 +
841 841  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 02):**
842 842  
843 843  (% style="color:blue" %)**0xAA 02 aa bb   ** (%%) ~/~/ Same as AT+DTRI=aa,bb
... ... @@ -849,15 +849,20 @@
849 849  
850 850  Set DI1 or DI3(for LT-33222-L) trigger.
851 851  
852 -* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+TRIG1=a,b**
915 +* (% style="color:#037691" %)**AT Command:**
853 853  
917 +(% style="color:blue" %)**AT+TRIG1=a,b**
918 +
854 854  (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
855 855  
856 856  (% style="color:red" %)**b :** (%%)delay timing.
857 857  
858 -**Example:** AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
859 859  
924 +**Example:**
860 860  
926 +AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
927 +
928 +
861 861  * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 01 ):**
862 862  
863 863  (% style="color:blue" %)**0x09 01 aa bb cc    ** (%%) ~/~/ same as AT+TRIG1=aa,0x(bb cc)
... ... @@ -869,15 +869,20 @@
869 869  
870 870  Set DI2 trigger.
871 871  
872 -* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+TRIG2=a,b**
940 +* (% style="color:#037691" %)**AT Command:**
873 873  
942 +(% style="color:blue" %)**AT+TRIG2=a,b**
943 +
874 874  (% style="color:red" %)**a :** (%%)Interrupt mode. 0: falling edge; 1: rising edge, 2: falling and raising edge(for MOD=1).
875 875  
876 876  (% style="color:red" %)**b :** (%%)delay timing.
877 877  
878 -**Example:** AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
879 879  
949 +**Example:**
880 880  
951 +AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
952 +
953 +
881 881  * (% style="color:#037691" %)**Downlink Payload (prefix 0x09 02 ):**
882 882  
883 883  (% style="color:blue" %)**0x09 02 aa bb cc   ** (%%)~/~/ same as AT+TRIG2=aa,0x(bb cc)
... ... @@ -889,8 +889,11 @@
889 889  
890 890  Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
891 891  
892 -* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+ACLIM**
965 +* (% style="color:#037691" %)**AT Command**
893 893  
967 +(% style="color:blue" %)**AT+ACLIM**
968 +
969 +
894 894  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 01 )**
895 895  
896 896  (% 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"]]
... ... @@ -902,8 +902,11 @@
902 902  
903 903  Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
904 904  
905 -* (% style="color:#037691" %)**AT Command**(%%): (% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
981 +* (% style="color:#037691" %)**AT Command**
906 906  
983 +(% style="color:blue" %)**AT+AVLIM    **(%%)** See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
984 +
985 +
907 907  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAA 00 )**
908 908  
909 909  (% 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"]]
... ... @@ -915,13 +915,18 @@
915 915  
916 916  Set AV and AC trigger minimum interval, system won't response to the second trigger within this set time after the first trigger.
917 917  
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.
997 +* (% style="color:#037691" %)**AT Command**
919 919  
999 +(% style="color:blue" %)**AT+ATDC=5        ** (%%)Device won't response the second trigger within 5 minute after the first trigger.
1000 +
1001 +
920 920  * (% style="color:#037691" %)**Downlink Payload (prefix 0xAC )**
921 921  
922 922  (% style="color:blue" %)**0x AC aa bb   **(%%) ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)
923 923  
924 924  (((
1007 +
1008 +
925 925  (% style="color:red" %)**Note: ATDC setting must be more than 5min**
926 926  )))
927 927  
... ... @@ -936,9 +936,8 @@
936 936  
937 937  
938 938  * (% style="color:#037691" %)**Downlink Payload (prefix 0x02)**
1023 +* (% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
939 939  
940 -(% style="color:blue" %)**0x02 aa bb cc     ** (%%)~/~/ Set DO1/DO2/DO3 output
941 -
942 942  (((
943 943  If payload = 0x02010001, while there is load between V+ and DOx, it means set DO1 to low, DO2 to high and DO3 to low.
944 944  )))
... ... @@ -945,14 +945,10 @@
945 945  
946 946  (((
947 947  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
954 954  )))
955 955  
1033 +[[image:image-20220524092754-5.png]]
1034 +
956 956  (((
957 957  (% style="color:red" %)**Note: For LT-22222-L, there is no DO3, the last byte can use any value.**
958 958  )))
... ... @@ -989,31 +989,24 @@
989 989  
990 990  (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
991 991  
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
1071 +[[image:image-20220524093238-6.png]]
997 997  
1073 +
998 998  (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
999 999  
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
1076 +[[image:image-20220524093328-7.png]]
1005 1005  
1078 +
1006 1006  (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1007 1007  
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
1081 +[[image:image-20220524093351-8.png]]
1013 1013  
1014 -(% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:(%%) Latching time. Unit: ms
1015 1015  
1084 +(% style="color:#4f81bd" %)**Sixth and Seventh and Eighth and Ninth Byte**:
1016 1016  
1086 + Latching time. Unit: ms
1087 +
1088 +
1017 1017  (% style="color:red" %)**Note: **
1018 1018  
1019 1019   Since Firmware v1.6.0, the latch time support 4 bytes and 2 bytes
... ... @@ -1020,6 +1020,7 @@
1020 1020  
1021 1021   Before Firmwre v1.6.0 the latch time only suport 2 bytes.
1022 1022  
1095 +
1023 1023  (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
1024 1024  
1025 1025  
... ... @@ -1043,7 +1043,7 @@
1043 1043  
1044 1044  
1045 1045  
1046 -==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
1119 +==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1047 1047  
1048 1048  
1049 1049  * (% style="color:#037691" %)**AT Command:**
... ... @@ -1061,18 +1061,11 @@
1061 1061  )))
1062 1062  
1063 1063  (((
1064 -00: Close ,  01: Open , 11: No action
1137 +01: Close ,  00: Open , 11: No action
1138 +)))
1065 1065  
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
1140 +(((
1141 +[[image:image-20230426161322-1.png]]
1076 1076  )))
1077 1077  
1078 1078  (% style="color:red" %)**Device will upload a packet if downlink code executes successfully.**
... ... @@ -1146,8 +1146,11 @@
1146 1146  
1147 1147  When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1148 1148  
1149 -* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1215 +* (% style="color:#037691" %)**AT Command:**
1150 1150  
1217 +(% style="color:blue" %)**AT+VOLMAX   ** (%%)~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1218 +
1219 +
1151 1151  * (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
1152 1152  
1153 1153  (% style="color:blue" %)**0xA5 aa bb cc   ** (%%)~/~/ Same as AT+VOLMAX=(aa bb),cc
... ... @@ -1157,8 +1157,10 @@
1157 1157  ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1158 1158  
1159 1159  
1160 -* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1229 +* (% style="color:#037691" %)**AT Command:**
1161 1161  
1231 +(% style="color:blue" %)**AT+SETCNT=aa,(bb cc dd ee) **
1232 +
1162 1162  (% style="color:red" %)**aa:**(%%) 1: Set count1; 2: Set count2; 3: Set AV1 count
1163 1163  
1164 1164  (% style="color:red" %)**bb cc dd ee: **(%%)number to be set
... ... @@ -1175,8 +1175,11 @@
1175 1175  
1176 1176  Clear counting for counting mode
1177 1177  
1178 -* (% style="color:#037691" %)**AT Command:**(%%) (% style="color:blue" %)**AT+CLRCOUNT         **(%%) ~/~/ clear all counting
1249 +* (% style="color:#037691" %)**AT Command:**
1179 1179  
1251 +(% style="color:blue" %)**AT+CLRCOUNT **(%%) ~/~/ clear all counting
1252 +
1253 +
1180 1180  * (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
1181 1181  
1182 1182  (% style="color:blue" %)**0x A6 01    ** (%%)~/~/ clear all counting
... ... @@ -1328,7 +1328,7 @@
1328 1328  
1329 1329  (% style="color:blue" %)**Step 3**(%%): Create an account or log in Mydevices.
1330 1330  
1331 -(% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L) and add DevEUI.(% style="display:none" %)
1405 +(% style="color:blue" %)**Step 4**(%%): Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
1332 1332  
1333 1333  Search under The things network
1334 1334  
... ... @@ -1335,6 +1335,7 @@
1335 1335  [[image:1653356838789-523.png||height="337" width="740"]]
1336 1336  
1337 1337  
1412 +
1338 1338  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1339 1339  
1340 1340  [[image:image-20220524094909-1.png||height="335" width="729"]]
... ... @@ -1366,12 +1366,12 @@
1366 1366  
1367 1367  
1368 1368  (((
1369 -The DI port of LT-22222-L can support **NPN** or **PNP** or **Dry Contact** output sensor.
1444 +The DI port of LT-22222-L can support NPN or PNP output sensor.
1370 1370  )))
1371 1371  
1372 1372  (((
1373 1373  (((
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.
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.
1375 1375  
1376 1376  
1377 1377  )))
... ... @@ -1479,19 +1479,6 @@
1479 1479  )))
1480 1480  
1481 1481  
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 -
1495 1495  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1496 1496  
1497 1497  
... ... @@ -1525,6 +1525,7 @@
1525 1525  
1526 1526  **Black:  GND**
1527 1527  
1590 +
1528 1528  **Connection diagram:**
1529 1529  
1530 1530  [[image:1653357640609-758.png]]
... ... @@ -1532,22 +1532,6 @@
1532 1532  [[image:1653357648330-671.png||height="155" width="733"]]
1533 1533  
1534 1534  
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 -
1551 1551  === 3.6.5 Relay Output ===
1552 1552  
1553 1553  
... ... @@ -1566,34 +1566,9 @@
1566 1566  == 3.7 LEDs Indicators ==
1567 1567  
1568 1568  
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 -)))
1616 +[[image:image-20220524100748-11.png]]
1576 1576  
1577 -(((
1578 -Successful join network: TX ON for 5 seconds.
1579 -)))
1580 1580  
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 -
1597 1597  = 4. Use AT Command =
1598 1598  
1599 1599  == 4.1 Access AT Command ==
... ... @@ -1603,6 +1603,10 @@
1603 1603  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.
1604 1604  )))
1605 1605  
1628 +(((
1629 +
1630 +)))
1631 +
1606 1606  [[image:1653358238933-385.png]]
1607 1607  
1608 1608  
... ... @@ -1921,6 +1921,8 @@
1921 1921  dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
1922 1922  
1923 1923  **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 +
1924 1924  )))
1925 1925  
1926 1926  (((
... ... @@ -1927,6 +1927,9 @@
1927 1927  [[image:1653359097980-169.png||height="188" width="729"]]
1928 1928  )))
1929 1929  
1958 +(((
1959 +
1960 +)))
1930 1930  
1931 1931  === 4.2.3 Change to Class A ===
1932 1932  
... ... @@ -1934,9 +1934,8 @@
1934 1934  (((
1935 1935  (% style="color:blue" %)**If sensor JOINED:**
1936 1936  
1937 -(% style="background-color:#dcdcdc" %)**AT+CLASS=A**
1938 -
1939 -(% style="background-color:#dcdcdc" %)**ATZ**
1968 +(% style="background-color:#dcdcdc" %)**AT+CLASS=A
1969 +ATZ**
1940 1940  )))
1941 1941  
1942 1942  
... ... @@ -1966,7 +1966,7 @@
1966 1966  
1967 1967  (((
1968 1968  (% 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]].
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]].
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]].
1970 1970  (% style="color:blue" %)**Step3**(%%)**:** Open flashloader; choose the correct COM port to update.
1971 1971  
1972 1972  
... ... @@ -1989,6 +1989,7 @@
1989 1989  
1990 1990  (% 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:
1991 1991  
2022 +
1992 1992  [[image:1653360054704-518.png||height="186" width="745"]]
1993 1993  
1994 1994  
... ... @@ -2052,21 +2052,13 @@
2052 2052  
2053 2053  (((
2054 2054  (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2055 -
2056 2056  (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2057 -
2058 2058  (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2059 -
2060 2060  (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2061 -
2062 2062  (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2063 -
2064 2064  (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2065 -
2066 2066  (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2067 -
2068 2068  (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2069 -
2070 2070  (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2071 2071  )))
2072 2072  
... ... @@ -2078,7 +2078,7 @@
2078 2078  [[image:1653360498588-932.png||height="485" width="726"]]
2079 2079  
2080 2080  
2081 -== 6.4 How to change the uplink interval? ==
2104 +== 6.4 How to change the uplink interval？ ==
2082 2082  
2083 2083  
2084 2084  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/]]
... ... @@ -2127,12 +2127,6 @@
2127 2127  Firmware version needs to be no less than 1.6.0.
2128 2128  
2129 2129  
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 -
2136 2136  = 7. Trouble Shooting =
2137 2137  )))
2138 2138  
... ... @@ -2173,13 +2173,6 @@
2173 2173  )))
2174 2174  
2175 2175  
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 -
2183 2183  = 8. Order Info =
2184 2184  
2185 2185  
... ... @@ -2221,7 +2221,7 @@
2221 2221  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.
2222 2222  )))
2223 2223  * (((
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]]
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]]
2225 2225  
2226 2226  
2227 2227  
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