Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 126.11 >
edited by Xiaoling
on 2023/06/19 15:59
To version < 137.1 >
edited by Mengting Qiu
on 2024/09/12 08:51
>
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Summary

Details

Page properties
Title
... ... @@ -1,1 +1,1 @@
1 -LT-22222-L LoRa IO Controller User Manual
1 +LT-22222-L -- LoRa IO Controller User Manual
Author
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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/}}
... ... @@ -53,164 +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 -
208 -
209 209  == 1.5 Hardware Variants ==
210 210  
211 211  
212 212  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:500px" %)
213 -|(% style="background-color:#d9e2f3; color:#0070c0; width:103px" %)**Model**|(% style="background-color:#d9e2f3; color:#0070c0; width:131px" %)**Photo**|(% style="background-color:#d9e2f3; color:#0070c0; width:266px" %)**Description**
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**
214 214  |(% style="width:103px" %)**LT22222-L**|(% style="width:131px" %)(((
215 215  (% style="text-align:center" %)
216 216  [[image:image-20230424115112-1.png||height="106" width="58"]]
... ... @@ -225,17 +225,10 @@
225 225  
226 226  = 2. Power ON Device =
227 227  
228 -
229 -(((
230 230  The LT controller can be powered by 7 ~~ 24V DC power source. Connect VIN to Power Input V+ and GND to power input V- to power the LT controller.
231 -)))
232 232  
233 -(((
234 234  PWR will on when device is properly powered.
235 235  
236 -
237 -)))
238 -
239 239  [[image:1653297104069-180.png]]
240 240  
241 241  
... ... @@ -294,7 +294,6 @@
294 294  [[image:1653298023685-319.png]]
295 295  
296 296  
297 -
298 298  (((
299 299  (% style="color:blue" %)**Step 2**(%%): Power on LT and it will auto join to the TTN network. After join success, it will start to upload message to TTN and user can see in the panel.
300 300  
... ... @@ -328,7 +328,7 @@
328 328  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default. (% style="display:none" %)
329 329  
330 330  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
331 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**
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**
332 332  |Value|(((
333 333  AVI1 voltage
334 334  )))|(((
... ... @@ -350,7 +350,7 @@
350 350  |RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
351 351  )))
352 352  
353 -* RO is for relay. ROx=1 : close，ROx=0 always open.
256 +* RO is for relay. ROx=1 : close, ROx=0 always open.
354 354  * DI is for digital input. DIx=1: high or float, DIx=0: low.
355 355  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
356 356  
... ... @@ -361,7 +361,7 @@
361 361  
362 362  **The value for the interface is:  **
363 363  
364 -AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
267 +AVI1 channel voltage is 0x04AB/1000=1195(DEC)/1000=1.195V
365 365  
366 366  AVI2 channel voltage is 0x04AC/1000=1.196V
367 367  
... ... @@ -389,8 +389,6 @@
389 389  ** DO1 is high in case there is load between DO1 and V+.
390 390  ** DO1 LED is off in both case
391 391  
392 -
393 -
394 394  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
395 395  
396 396  
... ... @@ -402,7 +402,7 @@
402 402  Total : 11 bytes payload
403 403  
404 404  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
405 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**
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**
406 406  |Value|COUNT1|COUNT2 |DIDORO*|(((
407 407  Reserve
408 408  )))|MOD
... ... @@ -415,7 +415,7 @@
415 415  |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
416 416  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
417 417  
418 -RO is for relay. ROx=1 : close，ROx=0 always open.
319 +RO is for relay. ROx=1 : close , ROx=0 always open.
419 419  )))
420 420  
421 421  * FIRST: Indicate this is the first packet after join network.
... ... @@ -423,6 +423,8 @@
423 423  
424 424  (((
425 425  (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
327 +
328 +
426 426  )))
427 427  
428 428  (((
... ... @@ -429,16 +429,15 @@
429 429  **To use counting mode, please run:**
430 430  )))
431 431  
432 -
433 433  (((
336 +(% class="box infomessage" %)
337 +(((
434 434  **AT+MOD=2**
435 -)))
436 436  
437 -(((
438 438  **ATZ**
439 439  )))
342 +)))
440 440  
441 -
442 442  (((
443 443  
444 444  
... ... @@ -468,7 +468,7 @@
468 468  **LT22222-L**: This mode the DI1 is used as a counting pin.
469 469  
470 470  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
471 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**
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**
472 472  |Value|COUNT1|(((
473 473  ACI1 Current
474 474  )))|(((
... ... @@ -483,7 +483,7 @@
483 483  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
484 484  )))
485 485  
486 -* RO is for relay. ROx=1 : close，ROx=0 always open.
388 +* RO is for relay. ROx=1 : close, ROx=0 always open.
487 487  * FIRST: Indicate this is the first packet after join network.
488 488  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
489 489  
... ... @@ -505,7 +505,6 @@
505 505  )))
506 506  )))
507 507  
508 -
509 509  (((
510 510  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
511 511  )))
... ... @@ -522,7 +522,7 @@
522 522  The AVI1 is also used for counting. AVI1 is used to monitor the voltage. It will check the voltage **every 60s**, if voltage is higher or lower than VOLMAX mV, the AVI1 Counting increase 1, so AVI1 counting can be used to measure a machine working hour.
523 523  
524 524  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
525 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0" %)**4**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**
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**
526 526  |Value|COUNT1|AVI1 Counting|DIDORO*|(((
527 527  Reserve
528 528  )))|MOD
... ... @@ -536,31 +536,29 @@
536 536  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
537 537  )))
538 538  
539 -* RO is for relay. ROx=1 : close，ROx=0 always open.
440 +* RO is for relay. ROx=1 : close, ROx=0 always open.
540 540  * FIRST: Indicate this is the first packet after join network.
541 541  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
542 542  
543 543  (((
544 544  (% style="color:red" %)**Note: DO3 is not valid for LT-22222-L.**
545 -)))
546 546  
547 -(((
548 548  
448 +)))
549 549  
450 +(((
550 550  **To use this mode, please run:**
551 551  )))
552 552  
553 -
554 554  (((
455 +(% class="box infomessage" %)
456 +(((
555 555  **AT+MOD=4**
556 -)))
557 557  
558 -(((
559 559  **ATZ**
560 560  )))
461 +)))
561 561  
562 -
563 -
564 564  (((
565 565  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
566 566  )))
... ... @@ -584,7 +584,7 @@
584 584  **LT22222-L**: This mode the DI1 is used as a counting pin.
585 585  
586 586  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
587 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**1**
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**
588 588  |Value|(((
589 589  AVI1 voltage
590 590  )))|(((
... ... @@ -603,7 +603,7 @@
603 603  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
604 604  )))
605 605  
606 -* RO is for relay. ROx=1 : close，ROx=0 always open.
505 +* RO is for relay. ROx=1 : close, ROx=0 always open.
607 607  * FIRST: Indicate this is the first packet after join network.
608 608  * (((
609 609  DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
... ... @@ -614,21 +614,18 @@
614 614  )))
615 615  
616 616  (((
617 -
618 -
619 619  **To use this mode, please run:**
620 620  )))
621 621  
622 -
623 623  (((
520 +(% class="box infomessage" %)
521 +(((
624 624  **AT+MOD=5**
625 -)))
626 626  
627 -(((
628 628  **ATZ**
629 629  )))
526 +)))
630 630  
631 -
632 632  (((
633 633  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
634 634  )))
... ... @@ -723,7 +723,7 @@
723 723  MOD6 Payload : total 11 bytes payload
724 724  
725 725  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
726 -|(% style="background-color:#d9e2f3; color:#0070c0; width:60px" %)**Size(bytes)**|(% style="background-color:#d9e2f3; color:#0070c0; width:69px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:69px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:109px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:49px" %)**6**|(% style="background-color:#d9e2f3; color:#0070c0; width:109px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**1**
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**
727 727  |Value|(((
728 728  TRI_A FLAG
729 729  )))|(((
... ... @@ -1051,7 +1051,7 @@
1051 1051  01: Low,  00: High ,  11: No action
1052 1052  
1053 1053  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
1054 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO2**|(% style="background-color:#d9e2f3; color:#0070c0" %)**DO3**
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**
1055 1055  |02  01  00  11|Low|High|No Action
1056 1056  |02  00  11  01|High|No Action|Low
1057 1057  |02  11  01  00|No Action|Low|High
... ... @@ -1094,7 +1094,7 @@
1094 1094  (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1095 1095  
1096 1096  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1097 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
993 +|(% style="background-color:#4f81bd; color:white" %)**Second Byte**|(% style="background-color:#4f81bd; color:white" %)**Status**
1098 1098  |0x01|DO1 set to low
1099 1099  |0x00|DO1 set to high
1100 1100  |0x11|DO1 NO Action
... ... @@ -1102,7 +1102,7 @@
1102 1102  (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1103 1103  
1104 1104  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1105 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1001 +|(% style="background-color:#4f81bd; color:white" %)**Second Byte**|(% style="background-color:#4f81bd; color:white" %)**Status**
1106 1106  |0x01|DO2 set to low
1107 1107  |0x00|DO2 set to high
1108 1108  |0x11|DO2 NO Action
... ... @@ -1110,7 +1110,7 @@
1110 1110  (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1111 1111  
1112 1112  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1113 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Second Byte**|(% style="background-color:#d9e2f3; color:#0070c0" %)**Status**
1009 +|(% style="background-color:#4f81bd; color:white" %)**Second Byte**|(% style="background-color:#4f81bd; color:white" %)**Status**
1114 1114  |0x01|DO3 set to low
1115 1115  |0x00|DO3 set to high
1116 1116  |0x11|DO3 NO Action
... ... @@ -1147,7 +1147,7 @@
1147 1147  
1148 1148  
1149 1149  
1150 -==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1046 +==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
1151 1151  
1152 1152  
1153 1153  * (% style="color:#037691" %)**AT Command:**
... ... @@ -1165,10 +1165,10 @@
1165 1165  )))
1166 1166  
1167 1167  (((
1168 -01: Close ,  00: Open , 11: No action
1064 +00: Close ,  01: Open , 11: No action
1169 1169  
1170 1170  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1171 -|(% style="background-color:#d9e2f3; color:#0070c0" %)**Downlink Code**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO1**|(% style="background-color:#d9e2f3; color:#0070c0" %)**RO2**
1067 +|(% style="background-color:#4f81bd; color:white" %)**Downlink Code**|(% style="background-color:#4f81bd; color:white" %)**RO1**|(% style="background-color:#4f81bd; color:white" %)**RO2**
1172 1172  |03  00  11|Open|No Action
1173 1173  |03  01  11|Close|No Action
1174 1174  |03  11  00|No Action|Open
... ... @@ -1439,7 +1439,6 @@
1439 1439  [[image:1653356838789-523.png||height="337" width="740"]]
1440 1440  
1441 1441  
1442 -
1443 1443  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1444 1444  
1445 1445  [[image:image-20220524094909-1.png||height="335" width="729"]]
... ... @@ -1592,8 +1592,11 @@
1592 1592  
1593 1593  [[image:image-20230616235145-1.png]]
1594 1594  
1490 +(% style="color:blue" %)**Example5**(%%): Connect to Open Colleactor
1595 1595  
1492 +[[image:image-20240219115718-1.png]]
1596 1596  
1494 +
1597 1597  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1598 1598  
1599 1599  
... ... @@ -1668,12 +1668,9 @@
1668 1668  == 3.7 LEDs Indicators ==
1669 1669  
1670 1670  
1671 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1672 -|(% style="background-color:#d9e2f3; color:#0070c0; width:50px" %)**LEDs**|(% style="background-color:#d9e2f3; color:#0070c0; width:470px" %)**Feature**
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**
1673 1673  |**PWR**|Always on if there is power
1674 -|**SYS**|(((
1675 -After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
1676 -)))
1677 1677  |**TX**|(((
1678 1678  (((
1679 1679  Device boot: TX blinks 5 times.
... ... @@ -1688,20 +1688,16 @@
1688 1688  )))
1689 1689  )))
1690 1690  |**RX**|RX blinks once when receive a packet.
1691 -|**DO1**|
1692 -|**DO2**|
1693 -|**DO3**|
1694 -|**DI2**|(((
1695 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
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
1696 1696  )))
1697 1697  |**DI2**|(((
1698 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1592 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1699 1699  )))
1700 -|**DI2**|(((
1701 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1702 -)))
1703 -|**RO1**|
1704 -|**RO2**|
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
1705 1705  
1706 1706  = 4. Use AT Command =
1707 1707  
... ... @@ -1712,10 +1712,6 @@
1712 1712  LT supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LT for using AT command, as below.
1713 1713  )))
1714 1714  
1715 -(((
1716 -
1717 -)))
1718 -
1719 1719  [[image:1653358238933-385.png]]
1720 1720  
1721 1721  
... ... @@ -2034,8 +2034,6 @@
2034 2034  dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.**
2035 2035  
2036 2036  **4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5.**
2037 -
2038 -
2039 2039  )))
2040 2040  
2041 2041  (((
... ... @@ -2042,9 +2042,6 @@
2042 2042  [[image:1653359097980-169.png||height="188" width="729"]]
2043 2043  )))
2044 2044  
2045 -(((
2046 -
2047 -)))
2048 2048  
2049 2049  === 4.2.3 Change to Class A ===
2050 2050  
... ... @@ -2052,8 +2052,9 @@
2052 2052  (((
2053 2053  (% style="color:blue" %)**If sensor JOINED:**
2054 2054  
2055 -(% style="background-color:#dcdcdc" %)**AT+CLASS=A
2056 -ATZ**
1937 +(% style="background-color:#dcdcdc" %)**AT+CLASS=A**
1938 +
1939 +(% style="background-color:#dcdcdc" %)**ATZ**
2057 2057  )))
2058 2058  
2059 2059  
... ... @@ -2106,7 +2106,6 @@
2106 2106  
2107 2107  (% style="color:red" %)**Notice**(%%): In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
2108 2108  
2109 -
2110 2110  [[image:1653360054704-518.png||height="186" width="745"]]
2111 2111  
2112 2112  
... ... @@ -2170,13 +2170,21 @@
2170 2170  
2171 2171  (((
2172 2172  (% style="background-color:#dcdcdc" %)**123456** (%%) :  Enter Password to have AT access.
2055 +
2173 2173  (% style="background-color:#dcdcdc" %)**AT+FDR**(%%)  :  Reset Parameters to Factory Default, Keys Reserve
2057 +
2174 2174  (% style="background-color:#dcdcdc" %)**AT+NJM=0** (%%) :  Set to ABP mode
2059 +
2175 2175  (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) :  Set the Adaptive Data Rate Off
2061 +
2176 2176  (% style="background-color:#dcdcdc" %)**AT+DR=5** (%%) :  Set Data Rate (Set AT+DR=3 for 915 band)
2063 +
2177 2177  (% style="background-color:#dcdcdc" %)**AT+TDC=60000 **(%%) :  Set transmit interval to 60 seconds
2065 +
2178 2178  (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) : Set transmit frequency to 868.4Mhz
2067 +
2179 2179  (% style="background-color:#dcdcdc" %)**AT+DADDR=26 01 1A F1**(%%)  :  Set Device Address to 26 01 1A F1
2069 +
2180 2180  (% style="background-color:#dcdcdc" %)**ATZ**        (%%) :  Reset MCU
2181 2181  )))
2182 2182  
... ... @@ -2188,7 +2188,7 @@
2188 2188  [[image:1653360498588-932.png||height="485" width="726"]]
2189 2189  
2190 2190  
2191 -== 6.4 How to change the uplink interval？ ==
2081 +== 6.4 How to change the uplink interval? ==
2192 2192  
2193 2193  
2194 2194  Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/]]
... ... @@ -2237,6 +2237,12 @@
2237 2237  Firmware version needs to be no less than 1.6.0.
2238 2238  
2239 2239  
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 +
2240 2240  = 7. Trouble Shooting =
2241 2241  )))
2242 2242  
... ... @@ -2277,6 +2277,13 @@
2277 2277  )))
2278 2278  
2279 2279  
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 +
2280 2280  = 8. Order Info =
2281 2281  
2282 2282  
... ... @@ -2330,5 +2330,3 @@
2330 2330  * LT-22222-L: [[http:~~/~~/www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]
2331 2331  * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2332 2332  * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2333 -
2334 -
image-20240219115718-1.png
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... ... @@ -1,0 +1,1 @@
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