Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 126.21 >
edited by Xiaoling
on 2023/06/19 16:22
To version < 136.1 >
edited by Mengting Qiu
on 2024/09/02 18:13
>
Change comment: There is no comment for this version

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/}}
... ... @@ -53,155 +53,64 @@
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 ==
... ... @@ -208,7 +208,7 @@
208 208  
209 209  
210 210  (% border="1" cellspacing="4" 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: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**
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  
... ... @@ -326,7 +326,7 @@
326 326  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default. (% style="display:none" %)
327 327  
328 328  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
329 -|(% 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**
330 330  |Value|(((
331 331  AVI1 voltage
332 332  )))|(((
... ... @@ -348,7 +348,7 @@
348 348  |RO1|RO2|DI3|DI2|DI1|DO3|DO2|DO1
349 349  )))
350 350  
351 -* RO is for relay. ROx=1 : close，ROx=0 always open.
256 +* RO is for relay. ROx=1 : close, ROx=0 always open.
352 352  * DI is for digital input. DIx=1: high or float, DIx=0: low.
353 353  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
354 354  
... ... @@ -359,7 +359,7 @@
359 359  
360 360  **The value for the interface is:  **
361 361  
362 -AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
267 +AVI1 channel voltage is 0x04AB/1000=1195(DEC)/1000=1.195V
363 363  
364 364  AVI2 channel voltage is 0x04AC/1000=1.196V
365 365  
... ... @@ -398,7 +398,7 @@
398 398  Total : 11 bytes payload
399 399  
400 400  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
401 -|(% 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**
402 402  |Value|COUNT1|COUNT2 |DIDORO*|(((
403 403  Reserve
404 404  )))|MOD
... ... @@ -411,7 +411,7 @@
411 411  |**bit7**|**bit6**|**bit5**|**bit4**|**bit3**|**bit2**|**bit1**|**bit0**
412 412  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
413 413  
414 -RO is for relay. ROx=1 : close，ROx=0 always open.
319 +RO is for relay. ROx=1 : close , ROx=0 always open.
415 415  )))
416 416  
417 417  * FIRST: Indicate this is the first packet after join network.
... ... @@ -419,6 +419,8 @@
419 419  
420 420  (((
421 421  (% style="color:red" %)**Note: DO3 bit is not valid for LT-22222-L.**
327 +
328 +
422 422  )))
423 423  
424 424  (((
... ... @@ -425,7 +425,6 @@
425 425  **To use counting mode, please run:**
426 426  )))
427 427  
428 -
429 429  (((
430 430  (% class="box infomessage" %)
431 431  (((
... ... @@ -464,7 +464,7 @@
464 464  **LT22222-L**: This mode the DI1 is used as a counting pin.
465 465  
466 466  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
467 -|(% 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**
468 468  |Value|COUNT1|(((
469 469  ACI1 Current
470 470  )))|(((
... ... @@ -479,7 +479,7 @@
479 479  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
480 480  )))
481 481  
482 -* RO is for relay. ROx=1 : close，ROx=0 always open.
388 +* RO is for relay. ROx=1 : close, ROx=0 always open.
483 483  * FIRST: Indicate this is the first packet after join network.
484 484  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
485 485  
... ... @@ -517,7 +517,7 @@
517 517  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.
518 518  
519 519  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
520 -|(% 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**
521 521  |Value|COUNT1|AVI1 Counting|DIDORO*|(((
522 522  Reserve
523 523  )))|MOD
... ... @@ -531,7 +531,7 @@
531 531  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
532 532  )))
533 533  
534 -* RO is for relay. ROx=1 : close，ROx=0 always open.
440 +* RO is for relay. ROx=1 : close, ROx=0 always open.
535 535  * FIRST: Indicate this is the first packet after join network.
536 536  * DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
537 537  
... ... @@ -577,7 +577,7 @@
577 577  **LT22222-L**: This mode the DI1 is used as a counting pin.
578 578  
579 579  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
580 -|(% 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**
581 581  |Value|(((
582 582  AVI1 voltage
583 583  )))|(((
... ... @@ -596,7 +596,7 @@
596 596  |RO1|RO2|FIRST|Reserve|Reserve|DO3|DO2|DO1
597 597  )))
598 598  
599 -* RO is for relay. ROx=1 : close，ROx=0 always open.
505 +* RO is for relay. ROx=1 : close, ROx=0 always open.
600 600  * FIRST: Indicate this is the first packet after join network.
601 601  * (((
602 602  DO is for reverse digital output. DOx=1: output low, DOx=0: high or float.
... ... @@ -713,7 +713,7 @@
713 713  MOD6 Payload : total 11 bytes payload
714 714  
715 715  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:515px" %)
716 -|(% 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**
717 717  |Value|(((
718 718  TRI_A FLAG
719 719  )))|(((
... ... @@ -1041,7 +1041,7 @@
1041 1041  01: Low,  00: High ,  11: No action
1042 1042  
1043 1043  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
1044 -|(% 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**
1045 1045  |02  01  00  11|Low|High|No Action
1046 1046  |02  00  11  01|High|No Action|Low
1047 1047  |02  11  01  00|No Action|Low|High
... ... @@ -1084,7 +1084,7 @@
1084 1084  (% style="color:#4f81bd" %)**Third Byte**(%%): Control Method and Ports status:
1085 1085  
1086 1086  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1087 -|(% 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**
1088 1088  |0x01|DO1 set to low
1089 1089  |0x00|DO1 set to high
1090 1090  |0x11|DO1 NO Action
... ... @@ -1092,7 +1092,7 @@
1092 1092  (% style="color:#4f81bd" %)**Fourth Byte**(%%): Control Method and Ports status:
1093 1093  
1094 1094  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1095 -|(% 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**
1096 1096  |0x01|DO2 set to low
1097 1097  |0x00|DO2 set to high
1098 1098  |0x11|DO2 NO Action
... ... @@ -1100,7 +1100,7 @@
1100 1100  (% style="color:#4f81bd" %)**Fifth Byte**(%%): Control Method and Ports status:
1101 1101  
1102 1102  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:300px" %)
1103 -|(% 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**
1104 1104  |0x01|DO3 set to low
1105 1105  |0x00|DO3 set to high
1106 1106  |0x11|DO3 NO Action
... ... @@ -1137,7 +1137,7 @@
1137 1137  
1138 1138  
1139 1139  
1140 -==== 3.4.2. 14 Relay ~-~- Control Relay Output RO1/RO2 ====
1046 +==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
1141 1141  
1142 1142  
1143 1143  * (% style="color:#037691" %)**AT Command:**
... ... @@ -1155,10 +1155,10 @@
1155 1155  )))
1156 1156  
1157 1157  (((
1158 -01: Close ,  00: Open , 11: No action
1064 +00: Close ,  01: Open , 11: No action
1159 1159  
1160 1160  (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:320px" %)
1161 -|(% 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**
1162 1162  |03  00  11|Open|No Action
1163 1163  |03  01  11|Close|No Action
1164 1164  |03  11  00|No Action|Open
... ... @@ -1429,7 +1429,6 @@
1429 1429  [[image:1653356838789-523.png||height="337" width="740"]]
1430 1430  
1431 1431  
1432 -
1433 1433  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1434 1434  
1435 1435  [[image:image-20220524094909-1.png||height="335" width="729"]]
... ... @@ -1582,8 +1582,11 @@
1582 1582  
1583 1583  [[image:image-20230616235145-1.png]]
1584 1584  
1490 +(% style="color:blue" %)**Example5**(%%): Connect to Open Colleactor
1585 1585  
1492 +[[image:image-20240219115718-1.png]]
1586 1586  
1494 +
1587 1587  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1588 1588  
1589 1589  
... ... @@ -1658,12 +1658,9 @@
1658 1658  == 3.7 LEDs Indicators ==
1659 1659  
1660 1660  
1661 -(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:520px" %)
1662 -|(% 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**
1663 1663  |**PWR**|Always on if there is power
1664 -|**SYS**|(((
1665 -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.
1666 -)))
1667 1667  |**TX**|(((
1668 1668  (((
1669 1669  Device boot: TX blinks 5 times.
... ... @@ -1678,20 +1678,16 @@
1678 1678  )))
1679 1679  )))
1680 1680  |**RX**|RX blinks once when receive a packet.
1681 -|**DO1**|
1682 -|**DO2**|
1683 -|**DO3**|
1684 -|**DI2**|(((
1685 -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
1686 1686  )))
1687 1687  |**DI2**|(((
1688 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1592 +For LT-22222-L: ON when DI2 is high, OFF when DI2 is low
1689 1689  )))
1690 -|**DI2**|(((
1691 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1692 -)))
1693 -|**RO1**|
1694 -|**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
1695 1695  
1696 1696  = 4. Use AT Command =
1697 1697  
... ... @@ -1702,10 +1702,6 @@
1702 1702  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.
1703 1703  )))
1704 1704  
1705 -(((
1706 -
1707 -)))
1708 -
1709 1709  [[image:1653358238933-385.png]]
1710 1710  
1711 1711  
... ... @@ -2092,7 +2092,6 @@
2092 2092  
2093 2093  (% 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:
2094 2094  
2095 -
2096 2096  [[image:1653360054704-518.png||height="186" width="745"]]
2097 2097  
2098 2098  
... ... @@ -2182,7 +2182,7 @@
2182 2182  [[image:1653360498588-932.png||height="485" width="726"]]
2183 2183  
2184 2184  
2185 -== 6.4 How to change the uplink interval？ ==
2081 +== 6.4 How to change the uplink interval? ==
2186 2186  
2187 2187  
2188 2188  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/]]
... ... @@ -2231,6 +2231,12 @@
2231 2231  Firmware version needs to be no less than 1.6.0.
2232 2232  
2233 2233  
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 +
2234 2234  = 7. Trouble Shooting =
2235 2235  )))
2236 2236  
... ... @@ -2271,6 +2271,13 @@
2271 2271  )))
2272 2272  
2273 2273  
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 +
2274 2274  = 8. Order Info =
2275 2275  
2276 2276  
... ... @@ -2288,8 +2288,6 @@
2288 2288  * (% style="color:red" %)**IN865**(%%):  LT with frequency bands IN865
2289 2289  * (% style="color:red" %)**CN779**(%%):  LT with frequency bands CN779
2290 2290  
2291 -
2292 -
2293 2293  = 9. Packing Info =
2294 2294  
2295 2295  
... ... @@ -2307,8 +2307,6 @@
2307 2307  * Package Size / pcs : 14.5 x 8 x 5 cm
2308 2308  * Weight / pcs : 170g
2309 2309  
2310 -
2311 -
2312 2312  = 10. Support =
2313 2313  
2314 2314  
... ... @@ -2328,5 +2328,3 @@
2328 2328  * 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]]
2329 2329  * [[Datasheet, Document Base>>https://www.dropbox.com/sh/gxxmgks42tqfr3a/AACEdsj_mqzeoTOXARRlwYZ2a?dl=0]]
2330 2330  * [[Hardware Source>>url:https://github.com/dragino/Lora/tree/master/LT/LT-33222-L/v1.0]]
2331 -
2332 -
image-20240219115718-1.png
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... ... @@ -1,0 +1,1 @@
1 +XWiki.Edwin
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