Last modified by Mengting Qiu on 2025/06/04 18:42

From version 77.29
edited by Xiaoling
on 2022/06/10 08:41
Change comment: There is no comment for this version
To version 68.15
edited by Xiaoling
on 2022/05/25 15:17
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -11,15 +11,12 @@
11 11  
12 12  
13 13  
14 -
15 -
16 -
17 17  = 1.Introduction =
18 18  
19 19  == 1.1 What is LT Series I/O Controller ==
20 20  
21 21  (((
22 -The Dragino (% style="color:blue" %)**LT series I/O Modules**(%%) are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as:** (% style="color:blue" %)analog current Input, analog voltage input(%%)**(% style="color:blue" %), **relay output**, **digital input**(%%) and (% style="color:blue" %)**digital output**(%%) etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
19 +The Dragino LT series I/O Modules are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as: analog current Input, analog voltage input, relay output, digital input and digital output etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
23 23  )))
24 24  
25 25  (((
... ... @@ -27,7 +27,7 @@
27 27  )))
28 28  
29 29  (((
30 -The LT I/O Controllers is aiming to provide an (% style="color:blue" %)**easy and low cost installation** (%%)by using LoRa wireless technology.
27 +The LT I/O Controllers is aiming to provide a simple plug and play, low cost installation by using LoRaWAN wireless technology.
31 31  )))
32 32  
33 33  (((
... ... @@ -44,15 +44,11 @@
44 44  
45 45  (((
46 46  [[image:1653295757274-912.png]]
47 -
48 -
49 49  )))
50 50  
51 51  == 1.2  Specifications ==
52 52  
53 53  (((
54 -
55 -
56 56  **Hardware System:**
57 57  )))
58 58  
... ... @@ -75,7 +75,6 @@
75 75  )))
76 76  )))
77 77  
78 -
79 79  (((
80 80  **Interface for Model: LT22222-L:**
81 81  )))
... ... @@ -99,7 +99,6 @@
99 99  Power Input 7~~ 24V DC. 
100 100  )))
101 101  
102 -
103 103  (((
104 104  **LoRa Spec:**
105 105  )))
... ... @@ -160,12 +160,8 @@
160 160  )))
161 161  * (((
162 162  Packet engine up to 256 bytes with CRC.
163 -
164 -
165 165  )))
166 166  
167 -
168 -
169 169  == 1.3 Features ==
170 170  
171 171  * LoRaWAN Class A & Class C protocol
... ... @@ -176,8 +176,6 @@
176 176  * Firmware upgradable via program port
177 177  * Counting
178 178  
179 -
180 -
181 181  == 1.4  Applications ==
182 182  
183 183  * Smart Buildings & Home Automation
... ... @@ -187,8 +187,6 @@
187 187  * Smart Cities
188 188  * Smart Factory
189 189  
190 -
191 -
192 192  == 1.5 Hardware Variants ==
193 193  
194 194  (% border="1" style="background-color:#f7faff; width:500px" %)
... ... @@ -202,8 +202,6 @@
202 202  * 1 x Counting Port
203 203  )))
204 204  
205 -
206 -
207 207  = 2. Power ON Device =
208 208  
209 209  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.
... ... @@ -214,8 +214,6 @@
214 214  
215 215  [[image:1653297104069-180.png]]
216 216  
217 -
218 -
219 219  = 3. Operation Mode =
220 220  
221 221  == 3.1 How it works? ==
... ... @@ -226,12 +226,8 @@
226 226  
227 227  (((
228 228  In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>||anchor="H4.UseATCommand"]] to set the keys in the devices.
229 -
230 -
231 231  )))
232 232  
233 -
234 -
235 235  == 3.2 Example to join LoRaWAN network ==
236 236  
237 237  (((
... ... @@ -260,12 +260,10 @@
260 260  
261 261  [[image:1653297955910-247.png||height="321" width="716"]]
262 262  
263 -
264 264  Add APP KEY and DEV EUI
265 265  
266 266  [[image:1653298023685-319.png]]
267 267  
268 -
269 269  (((
270 270  **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.
271 271  )))
... ... @@ -272,8 +272,6 @@
272 272  
273 273  [[image:1653298044601-602.png||height="405" width="709"]]
274 274  
275 -
276 -
277 277  == 3.3 Uplink Payload ==
278 278  
279 279  There are five working modes + one interrupt mode on LT for different type application:
... ... @@ -285,8 +285,6 @@
285 285  * **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
286 286  * **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
287 287  
288 -
289 -
290 290  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
291 291  
292 292  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
... ... @@ -322,7 +322,6 @@
322 322  * [1] RO1 relay channel is close and the RO1 LED is ON.
323 323  * [0] RO2 relay channel is open and RO2 LED is OFF;
324 324  
325 -
326 326  **LT22222-L:**
327 327  
328 328  * [1] DI2 channel is high input and DI2 LED is ON;
... ... @@ -338,8 +338,6 @@
338 338  ** DO1 is high in case there is load between DO1 and V+.
339 339  ** DO1 LED is off in both case
340 340  
341 -
342 -
343 343  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
344 344  
345 345  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
... ... @@ -432,8 +432,6 @@
432 432  )))
433 433  )))
434 434  
435 -
436 -
437 437  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
438 438  
439 439  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -474,12 +474,8 @@
474 474  
475 475  (((
476 476  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
477 -
478 -
479 479  )))
480 480  
481 -
482 -
483 483  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
484 484  
485 485  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -560,8 +560,6 @@
560 560  )))
561 561  )))
562 562  
563 -
564 -
565 565  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
566 566  
567 567  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -602,12 +602,8 @@
602 602  
603 603  (((
604 604  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
605 -
606 -
607 607  )))
608 608  
609 -
610 -
611 611  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
612 612  
613 613  (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
... ... @@ -634,7 +634,6 @@
634 634  
635 635  AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
636 636  
637 -
638 638  (% style="color:#4f81bd" %)**Trigger base on current**:
639 639  
640 640  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
... ... @@ -643,7 +643,6 @@
643 643  
644 644  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
645 645  
646 -
647 647  (% style="color:#4f81bd" %)**Trigger base on DI status**:
648 648  
649 649  DI status trigger Flag.
... ... @@ -730,18 +730,12 @@
730 730  
731 731  When device got this command, it will send the MOD6 payload.
732 732  
733 -
734 -
735 735  === 3.3.7 Payload Decoder ===
736 736  
737 737  (((
738 738  **Decoder for TTN/loraserver/ChirpStack**: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/Payload_decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/Payload_decoder/]]
739 -
740 -
741 741  )))
742 742  
743 -
744 -
745 745  == 3.4 ​Configure LT via AT or Downlink ==
746 746  
747 747  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
... ... @@ -750,18 +750,14 @@
750 750  There are two kinds of Commands:
751 751  )))
752 752  
753 -* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
699 +* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: http:~/~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands
754 754  
755 755  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
756 756  
757 -
758 -
759 759  === 3.4.1 Common Commands ===
760 760  
761 761  They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
762 762  
763 -
764 -
765 765  === 3.4.2 Sensor related commands ===
766 766  
767 767  ==== 3.4.2.1 Set Transmit Interval ====
... ... @@ -784,8 +784,6 @@
784 784  **0x01 aa bb cc     ~/~/ Same as AT+TDC=0x(aa bb cc)**
785 785  )))
786 786  
787 -
788 -
789 789  ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
790 790  
791 791  Set work mode.
... ... @@ -806,8 +806,6 @@
806 806  **0x0A aa     ~/~/ Same as AT+MOD=aa**
807 807  )))
808 808  
809 -
810 -
811 811  ==== 3.4.2.3 Poll an uplink ====
812 812  
813 813  * AT Command:
... ... @@ -823,11 +823,9 @@
823 823  
824 824  **Example**: 0x08FF, ask device to send an Uplink
825 825  
826 -
827 -
828 828  ==== 3.4.2.4 Enable Trigger Mode ====
829 829  
830 -Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
766 +Use of trigger mode, please check [[ADDMOD6>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]
831 831  
832 832  * AT Command:
833 833  
... ... @@ -847,8 +847,6 @@
847 847  **0x0A 06 aa     ~/~/ Same as AT+ADDMOD6=aa,**
848 848  )))
849 849  
850 -
851 -
852 852  ==== 3.4.2.5 Poll trigger settings ====
853 853  
854 854  Poll trigger settings,
... ... @@ -864,8 +864,6 @@
864 864  **0xAB 06  ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command**
865 865  )))
866 866  
867 -
868 -
869 869  ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
870 870  
871 871  Enable Disable DI1/DI2/DI2 as trigger,
... ... @@ -888,8 +888,6 @@
888 888  **0xAA 02 aa bb  ~/~/ Same as AT+DTRI=aa,bb**
889 889  )))
890 890  
891 -
892 -
893 893  ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
894 894  
895 895  Set DI1 or DI3(for LT-33222-L) trigger.
... ... @@ -916,8 +916,6 @@
916 916  **0x09 01 aa bb cc ~/~/ same as AT+TRIG1=aa,0x(bb cc)**
917 917  )))
918 918  
919 -
920 -
921 921  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
922 922  
923 923  Set DI2 trigger.
... ... @@ -944,11 +944,9 @@
944 944  **0x09 02 aa bb cc ~/~/ same as AT+TRIG1=aa,0x(bb cc)**
945 945  )))
946 946  
947 -
948 -
949 949  ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
950 950  
951 -Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
877 +Set current trigger , base on AC port. See [[trigger mode>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]
952 952  
953 953  * AT Command:
954 954  
... ... @@ -961,20 +961,18 @@
961 961  
962 962  (% class="box infomessage" %)
963 963  (((
964 -**0x AA 01 aa bb cc dd ee ff gg hh ~/~/ same as AT+ACLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
890 +**0x AA 01 aa bb cc dd ee ff gg hh ~/~/ same as AT+ACLIM See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]**
965 965  )))
966 966  
967 -
968 -
969 969  ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
970 970  
971 -Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
895 +Set current trigger , base on AV port. See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]
972 972  
973 973  * AT Command:
974 974  
975 975  (% class="box infomessage" %)
976 976  (((
977 -**AT+AVLIM. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
901 +**AT+AVLIM. See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]**
978 978  )))
979 979  
980 980  * Downlink Payload (prefix 0xAA 00 ):
... ... @@ -981,11 +981,9 @@
981 981  
982 982  (% class="box infomessage" %)
983 983  (((
984 -**0x AA 00 aa bb cc dd ee ff gg hh ~/~/ same as AT+AVLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]] **
908 +**0x AA 00 aa bb cc dd ee ff gg hh ~/~/ same as AT+AVLIM See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]] **
985 985  )))
986 986  
987 -
988 -
989 989  ==== 3.4.2.11 Trigger – Set minimum interval ====
990 990  
991 991  Set AV and AC trigger minimum interval, system won’t response to the second trigger within this set time after the first trigger.
... ... @@ -1004,8 +1004,6 @@
1004 1004  **0x AC aa bb ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)**
1005 1005  )))
1006 1006  
1007 -
1008 -
1009 1009  ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
1010 1010  
1011 1011  * AT Command:
... ... @@ -1180,13 +1180,13 @@
1180 1180  
1181 1181  ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1182 1182  
1183 -When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1103 +When voltage exceed the threshold, count. Feature see [[MOD4>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting]]
1184 1184  
1185 1185  * AT Command:
1186 1186  
1187 1187  (% class="box infomessage" %)
1188 1188  (((
1189 -**AT+VOLMAX    ~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]**
1109 +**AT+VOLMAX    ~/~/ See [[MOD4>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting]]**
1190 1190  )))
1191 1191  
1192 1192  * Downlink Payload (prefix 0xA5):
... ... @@ -1196,7 +1196,6 @@
1196 1196  **0xA5 aa bb cc   ~/~/ Same as AT+VOLMAX=(aa bb),cc**
1197 1197  )))
1198 1198  
1199 -
1200 1200  ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1201 1201  
1202 1202  * AT Command:
... ... @@ -1221,7 +1221,6 @@
1221 1221  **0x A8 aa bb cc dd ee     ~/~/ same as AT+SETCNT=aa,(bb cc dd ee)**
1222 1222  )))
1223 1223  
1224 -
1225 1225  ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1226 1226  
1227 1227  Clear counting for counting mode
... ... @@ -1240,7 +1240,6 @@
1240 1240  **0x A6 01     ~/~/ clear all counting,**
1241 1241  )))
1242 1242  
1243 -
1244 1244  ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1245 1245  
1246 1246  * AT Command:
... ... @@ -1259,8 +1259,6 @@
1259 1259  
1260 1260  (((
1261 1261  range: aa bb cc:0 to 16777215,  (unit:second)
1262 -
1263 -
1264 1264  )))
1265 1265  
1266 1266  == 3.5 Integrate with Mydevice ==
... ... @@ -1281,7 +1281,6 @@
1281 1281  
1282 1282  [[image:image-20220524094641-12.png||height="402" width="718"]]
1283 1283  
1284 -
1285 1285  **Step 3**: Create an account or log in Mydevices.
1286 1286  
1287 1287  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
... ... @@ -1290,7 +1290,6 @@
1290 1290  
1291 1291  [[image:1653356838789-523.png||height="337" width="740"]]
1292 1292  
1293 -
1294 1294  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1295 1295  
1296 1296  [[image:image-20220524094909-1.png||height="335" width="729"]]
... ... @@ -1303,7 +1303,6 @@
1303 1303  
1304 1304  [[image:image-20220524094909-5.png||height="341" width="734"]]
1305 1305  
1306 -
1307 1307  == 3.6 Interface Detail ==
1308 1308  
1309 1309  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
... ... @@ -1312,7 +1312,6 @@
1312 1312  
1313 1313  [[image:1653356991268-289.png]]
1314 1314  
1315 -
1316 1316  === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1317 1317  
1318 1318  (((
... ... @@ -1328,105 +1328,51 @@
1328 1328  [[image:1653357170703-587.png]]
1329 1329  
1330 1330  (((
1331 -(((
1332 1332  When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1333 1333  )))
1334 -)))
1335 1335  
1336 -(((
1337 -
1338 -)))
1339 1339  
1340 -(((
1341 1341  **Example1**: Connect to a Low active sensor.
1342 -)))
1343 1343  
1344 -(((
1345 1345  This type of sensor will output a low signal GND when active.
1346 -)))
1347 1347  
1348 -* (((
1349 -Connect sensor’s output to DI1-
1350 -)))
1351 -* (((
1352 -Connect sensor’s VCC to DI1+.
1353 -)))
1250 +* Connect sensor’s output to DI1-
1251 +* Connect sensor’s VCC to DI1+.
1354 1354  
1355 -(((
1356 -So when sensor active, the current between NEC2501 pin1 and pin2 is:
1357 -)))
1253 +So when sensor active, the current between NEC2501 pin1 and pin2 is: ​​
1358 1358  
1359 -(((
1360 -[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1361 -)))
1255 +[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]** [[image:image-20220524095628-8.png]] = DI1+ / 1K.**
1362 1362  
1363 -(((
1364 -If DI1+ = 12v, the [[image:1653968155772-850.png||height="23" width="19"]]= 12mA , So the LT-22222-L will be able to detect this active signal.
1365 -)))
1257 +If DI1+ = 12v, the //IF// = 12mA , So the LT-22222-L will be able to detect this active signal.
1366 1366  
1367 -(((
1368 -
1369 -)))
1370 1370  
1371 -(((
1372 1372  **Example2**: Connect to a High active sensor.
1373 -)))
1374 1374  
1375 -(((
1376 1376  This type of sensor will output a high signal (example 24v) when active.
1377 -)))
1378 1378  
1379 -* (((
1380 -Connect sensor’s output to DI1+
1381 -)))
1382 -* (((
1383 -Connect sensor’s GND DI1-.
1384 -)))
1264 +* Connect sensor’s output to DI1+
1265 +* Connect sensor’s GND DI1-.
1385 1385  
1386 -(((
1387 1387  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1388 -)))
1389 1389  
1390 -(((
1391 -[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1392 -)))
1269 +[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]** [[image:image-20220524095628-8.png]]= DI1+ / 1K.**
1393 1393  
1394 -(((
1395 -If **DI1+ = 24v**, the[[image:1653968155772-850.png||height="23" width="19"]] 24mA , So the LT-22222-L will be able to detect this high active signal.
1396 -)))
1271 +If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
1397 1397  
1398 -(((
1399 -
1400 -)))
1401 1401  
1402 -(((
1403 1403  **Example3**: Connect to a 220v high active sensor.
1404 -)))
1405 1405  
1406 -(((
1407 1407  Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1408 -)))
1409 1409  
1410 -* (((
1411 -Connect sensor’s output to DI1+ with a serial 50K resistor
1412 -)))
1413 -* (((
1414 -Connect sensor’s GND DI1-.
1415 -)))
1278 +* Connect sensor’s output to DI1+ with a serial 50K resistor
1279 +* Connect sensor’s GND DI1-.
1416 1416  
1417 -(((
1418 1418  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1419 -)))
1420 1420  
1421 -(((
1422 - [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1423 -)))
1283 + [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.**
1424 1424  
1425 -(((
1426 -If sensor output is 220v, the [[image:1653968155772-850.png||height="23" width="19"]](% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1427 -)))
1285 +If sensor output is 220v, the (% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1428 1428  
1429 -
1430 1430  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1431 1431  
1432 1432  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
... ... @@ -1433,7 +1433,6 @@
1433 1433  
1434 1434  [[image:1653357531600-905.png]]
1435 1435  
1436 -
1437 1437  === 3.6.4 Analog Input Interface ===
1438 1438  
1439 1439  The analog input interface is as below. The LT will measure the IN2 voltage so to calculate the current pass the Load. The formula is:
... ... @@ -1461,7 +1461,6 @@
1461 1461  
1462 1462  [[image:1653357648330-671.png||height="155" width="733"]]
1463 1463  
1464 -
1465 1465  === 3.6.5 Relay Output ===
1466 1466  
1467 1467  (((
... ... @@ -1472,12 +1472,10 @@
1472 1472  
1473 1473  [[image:image-20220524100215-10.png||height="382" width="723"]]
1474 1474  
1475 -
1476 1476  == 3.7 LEDs Indicators ==
1477 1477  
1478 1478  [[image:image-20220524100748-11.png]]
1479 1479  
1480 -
1481 1481  = 4. Use AT Command =
1482 1482  
1483 1483  == 4.1 Access AT Command ==
... ... @@ -1678,8 +1678,6 @@
1678 1678  
1679 1679  (((
1680 1680  AT+CFG: Print all settings
1681 -
1682 -
1683 1683  )))
1684 1684  
1685 1685  == 4.2 Common AT Command Sequence ==
... ... @@ -1721,8 +1721,6 @@
1721 1721  
1722 1722  (((
1723 1723  (% style="background-color:#dcdcdc" %)ATZ
1724 -
1725 -
1726 1726  )))
1727 1727  
1728 1728  === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
... ... @@ -1804,7 +1804,6 @@
1804 1804  (% style="background-color:#dcdcdc" %)AT+CLASS=A
1805 1805  ATZ
1806 1806  
1807 -
1808 1808  = 5. FAQ =
1809 1809  
1810 1810  == 5.1 How to upgrade the image? ==
... ... @@ -1835,7 +1835,6 @@
1835 1835  
1836 1836  [[image:1653360054704-518.png||height="186" width="745"]]
1837 1837  
1838 -
1839 1839  (((
1840 1840  (((
1841 1841  == 5.2 How to change the LoRa Frequency Bands/Region? ==
... ... @@ -1844,8 +1844,6 @@
1844 1844  
1845 1845  (((
1846 1846  User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1847 -
1848 -
1849 1849  )))
1850 1850  
1851 1851  (((
... ... @@ -1899,18 +1899,10 @@
1899 1899  
1900 1900  [[image:1653360498588-932.png||height="485" width="726"]]
1901 1901  
1902 -
1903 1903  == 5.4 Can I see counting event in Serial? ==
1904 1904  
1905 1905  (((
1906 1906  User can run AT+DEBUG command to see the counting event in serial. If firmware too old and doesn’t support AT+DEBUG. User can update to latest firmware first.
1907 -
1908 -
1909 -== 5.5 Can i use point to point communication for LT-22222-L? ==
1910 -
1911 -Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]
1912 -
1913 -
1914 1914  )))
1915 1915  
1916 1916  (((
... ... @@ -1924,8 +1924,10 @@
1924 1924  )))
1925 1925  
1926 1926  (((
1927 -Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
1764 +Please see this link for how to debug:
1928 1928  
1766 +[[http:~~/~~/wiki1.dragino.com/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H5.1Howitwork>>http://wiki1.dragino.com/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H5.1Howitwork]]
1767 +
1929 1929  
1930 1930  )))
1931 1931  
... ... @@ -1934,7 +1934,9 @@
1934 1934  )))
1935 1935  
1936 1936  (((
1937 -See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
1776 +See this link for trouble shooting:
1777 +
1778 +[[http:~~/~~/wiki1.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/>>http://wiki1.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/]]
1938 1938  )))
1939 1939  
1940 1940  (((
... ... @@ -1946,7 +1946,9 @@
1946 1946  )))
1947 1947  
1948 1948  (((
1949 -It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1790 +It might be about the channels mapping. Please see this link for detail:
1791 +
1792 +[[http:~~/~~/wiki1.dragino.com/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H2.NoticeofUS9152FCN4702FAU915Frequencyband>>http://wiki1.dragino.com/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H2.NoticeofUS9152FCN4702FAU915Frequencyband]]
1950 1950  )))
1951 1951  
1952 1952  (((
... ... @@ -2020,8 +2020,6 @@
2020 2020  (((
2021 2021  * (((
2022 2022  (% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779
2023 -
2024 -
2025 2025  )))
2026 2026  
2027 2027  = 8. Packing Info =
... ... @@ -2054,8 +2054,6 @@
2054 2054  * Device Weight: 105g
2055 2055  * Package Size / pcs : 14.5 x 8 x 5 cm
2056 2056  * Weight / pcs : 170g
2057 -
2058 -
2059 2059  )))
2060 2060  )))
2061 2061  
... ... @@ -2077,8 +2077,6 @@
2077 2077  (((
2078 2078  (((
2079 2079   [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
2080 -
2081 -
2082 2082  )))
2083 2083  
2084 2084  (((
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