Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 77.5 >
edited by Xiaoling
on 2022/06/10 08:38
To version < 68.17 >
edited by Xiaoling
on 2022/05/25 15:22
>
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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" %)
... ... @@ -212,7 +212,6 @@
212 212  
213 213  [[image:1653297104069-180.png]]
214 214  
215 -
216 216  = 3. Operation Mode =
217 217  
218 218  == 3.1 How it works? ==
... ... @@ -223,8 +223,6 @@
223 223  
224 224  (((
225 225  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.
226 -
227 -
228 228  )))
229 229  
230 230  == 3.2 Example to join LoRaWAN network ==
... ... @@ -255,12 +255,10 @@
255 255  
256 256  [[image:1653297955910-247.png||height="321" width="716"]]
257 257  
258 -
259 259  Add APP KEY and DEV EUI
260 260  
261 261  [[image:1653298023685-319.png]]
262 262  
263 -
264 264  (((
265 265  **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.
266 266  )))
... ... @@ -267,7 +267,6 @@
267 267  
268 268  [[image:1653298044601-602.png||height="405" width="709"]]
269 269  
270 -
271 271  == 3.3 Uplink Payload ==
272 272  
273 273  There are five working modes + one interrupt mode on LT for different type application:
... ... @@ -421,7 +421,6 @@
421 421  )))
422 422  )))
423 423  
424 -
425 425  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
426 426  
427 427  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -462,8 +462,6 @@
462 462  
463 463  (((
464 464  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
465 -
466 -
467 467  )))
468 468  
469 469  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
... ... @@ -546,7 +546,6 @@
546 546  )))
547 547  )))
548 548  
549 -
550 550  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
551 551  
552 552  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -587,8 +587,6 @@
587 587  
588 588  (((
589 589  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
590 -
591 -
592 592  )))
593 593  
594 594  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
... ... @@ -617,7 +617,6 @@
617 617  
618 618  AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
619 619  
620 -
621 621  (% style="color:#4f81bd" %)**Trigger base on current**:
622 622  
623 623  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
... ... @@ -626,7 +626,6 @@
626 626  
627 627  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
628 628  
629 -
630 630  (% style="color:#4f81bd" %)**Trigger base on DI status**:
631 631  
632 632  DI status trigger Flag.
... ... @@ -713,13 +713,10 @@
713 713  
714 714  When device got this command, it will send the MOD6 payload.
715 715  
716 -
717 717  === 3.3.7 Payload Decoder ===
718 718  
719 719  (((
720 720  **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/]]
721 -
722 -
723 723  )))
724 724  
725 725  == 3.4 ​Configure LT via AT or Downlink ==
... ... @@ -730,7 +730,7 @@
730 730  There are two kinds of Commands:
731 731  )))
732 732  
733 -* (% 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
734 734  
735 735  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
736 736  
... ... @@ -738,7 +738,6 @@
738 738  
739 739  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]]
740 740  
741 -
742 742  === 3.4.2 Sensor related commands ===
743 743  
744 744  ==== 3.4.2.1 Set Transmit Interval ====
... ... @@ -761,7 +761,6 @@
761 761  **0x01 aa bb cc     ~/~/ Same as AT+TDC=0x(aa bb cc)**
762 762  )))
763 763  
764 -
765 765  ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
766 766  
767 767  Set work mode.
... ... @@ -782,7 +782,6 @@
782 782  **0x0A aa     ~/~/ Same as AT+MOD=aa**
783 783  )))
784 784  
785 -
786 786  ==== 3.4.2.3 Poll an uplink ====
787 787  
788 788  * AT Command:
... ... @@ -798,10 +798,9 @@
798 798  
799 799  **Example**: 0x08FF, ask device to send an Uplink
800 800  
801 -
802 802  ==== 3.4.2.4 Enable Trigger Mode ====
803 803  
804 -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]]
805 805  
806 806  * AT Command:
807 807  
... ... @@ -821,7 +821,6 @@
821 821  **0x0A 06 aa     ~/~/ Same as AT+ADDMOD6=aa,**
822 822  )))
823 823  
824 -
825 825  ==== 3.4.2.5 Poll trigger settings ====
826 826  
827 827  Poll trigger settings,
... ... @@ -837,7 +837,6 @@
837 837  **0xAB 06  ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command**
838 838  )))
839 839  
840 -
841 841  ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
842 842  
843 843  Enable Disable DI1/DI2/DI2 as trigger,
... ... @@ -860,7 +860,6 @@
860 860  **0xAA 02 aa bb  ~/~/ Same as AT+DTRI=aa,bb**
861 861  )))
862 862  
863 -
864 864  ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
865 865  
866 866  Set DI1 or DI3(for LT-33222-L) trigger.
... ... @@ -887,7 +887,6 @@
887 887  **0x09 01 aa bb cc ~/~/ same as AT+TRIG1=aa,0x(bb cc)**
888 888  )))
889 889  
890 -
891 891  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
892 892  
893 893  Set DI2 trigger.
... ... @@ -914,10 +914,9 @@
914 914  **0x09 02 aa bb cc ~/~/ same as AT+TRIG1=aa,0x(bb cc)**
915 915  )))
916 916  
917 -
918 918  ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
919 919  
920 -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]]
921 921  
922 922  * AT Command:
923 923  
... ... @@ -930,19 +930,18 @@
930 930  
931 931  (% class="box infomessage" %)
932 932  (((
933 -**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]]**
934 934  )))
935 935  
936 -
937 937  ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
938 938  
939 -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]]
940 940  
941 941  * AT Command:
942 942  
943 943  (% class="box infomessage" %)
944 944  (((
945 -**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]]**
946 946  )))
947 947  
948 948  * Downlink Payload (prefix 0xAA 00 ):
... ... @@ -949,10 +949,9 @@
949 949  
950 950  (% class="box infomessage" %)
951 951  (((
952 -**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]] **
953 953  )))
954 954  
955 -
956 956  ==== 3.4.2.11 Trigger – Set minimum interval ====
957 957  
958 958  Set AV and AC trigger minimum interval, system won’t response to the second trigger within this set time after the first trigger.
... ... @@ -971,7 +971,6 @@
971 971  **0x AC aa bb ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)**
972 972  )))
973 973  
974 -
975 975  ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
976 976  
977 977  * AT Command:
... ... @@ -1146,13 +1146,13 @@
1146 1146  
1147 1147  ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1148 1148  
1149 -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]]
1150 1150  
1151 1151  * AT Command:
1152 1152  
1153 1153  (% class="box infomessage" %)
1154 1154  (((
1155 -**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]]**
1156 1156  )))
1157 1157  
1158 1158  * Downlink Payload (prefix 0xA5):
... ... @@ -1162,7 +1162,6 @@
1162 1162  **0xA5 aa bb cc   ~/~/ Same as AT+VOLMAX=(aa bb),cc**
1163 1163  )))
1164 1164  
1165 -
1166 1166  ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1167 1167  
1168 1168  * AT Command:
... ... @@ -1187,7 +1187,6 @@
1187 1187  **0x A8 aa bb cc dd ee     ~/~/ same as AT+SETCNT=aa,(bb cc dd ee)**
1188 1188  )))
1189 1189  
1190 -
1191 1191  ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1192 1192  
1193 1193  Clear counting for counting mode
... ... @@ -1206,7 +1206,6 @@
1206 1206  **0x A6 01     ~/~/ clear all counting,**
1207 1207  )))
1208 1208  
1209 -
1210 1210  ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1211 1211  
1212 1212  * AT Command:
... ... @@ -1225,8 +1225,6 @@
1225 1225  
1226 1226  (((
1227 1227  range: aa bb cc:0 to 16777215,  (unit:second)
1228 -
1229 -
1230 1230  )))
1231 1231  
1232 1232  == 3.5 Integrate with Mydevice ==
... ... @@ -1247,7 +1247,6 @@
1247 1247  
1248 1248  [[image:image-20220524094641-12.png||height="402" width="718"]]
1249 1249  
1250 -
1251 1251  **Step 3**: Create an account or log in Mydevices.
1252 1252  
1253 1253  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
... ... @@ -1256,7 +1256,6 @@
1256 1256  
1257 1257  [[image:1653356838789-523.png||height="337" width="740"]]
1258 1258  
1259 -
1260 1260  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1261 1261  
1262 1262  [[image:image-20220524094909-1.png||height="335" width="729"]]
... ... @@ -1269,7 +1269,6 @@
1269 1269  
1270 1270  [[image:image-20220524094909-5.png||height="341" width="734"]]
1271 1271  
1272 -
1273 1273  == 3.6 Interface Detail ==
1274 1274  
1275 1275  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
... ... @@ -1278,7 +1278,6 @@
1278 1278  
1279 1279  [[image:1653356991268-289.png]]
1280 1280  
1281 -
1282 1282  === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1283 1283  
1284 1284  (((
... ... @@ -1294,105 +1294,51 @@
1294 1294  [[image:1653357170703-587.png]]
1295 1295  
1296 1296  (((
1297 -(((
1298 1298  When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1299 1299  )))
1300 -)))
1301 1301  
1302 -(((
1303 -
1304 -)))
1305 1305  
1306 -(((
1307 1307  **Example1**: Connect to a Low active sensor.
1308 -)))
1309 1309  
1310 -(((
1311 1311  This type of sensor will output a low signal GND when active.
1312 -)))
1313 1313  
1314 -* (((
1315 -Connect sensor’s output to DI1-
1316 -)))
1317 -* (((
1318 -Connect sensor’s VCC to DI1+.
1319 -)))
1250 +* Connect sensor’s output to DI1-
1251 +* Connect sensor’s VCC to DI1+.
1320 1320  
1321 -(((
1322 -So when sensor active, the current between NEC2501 pin1 and pin2 is：
1323 -)))
1253 +So when sensor active, the current between NEC2501 pin1 and pin2 is： ​​
1324 1324  
1325 -(((
1326 -[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1327 -)))
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.**
1328 1328  
1329 -(((
1330 -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.
1331 -)))
1257 +If DI1+ = 12v, the //IF// = 12mA , So the LT-22222-L will be able to detect this active signal.
1332 1332  
1333 -(((
1334 -
1335 -)))
1336 1336  
1337 -(((
1338 1338  **Example2**: Connect to a High active sensor.
1339 -)))
1340 1340  
1341 -(((
1342 1342  This type of sensor will output a high signal (example 24v) when active.
1343 -)))
1344 1344  
1345 -* (((
1346 -Connect sensor’s output to DI1+
1347 -)))
1348 -* (((
1349 -Connect sensor’s GND DI1-.
1350 -)))
1264 +* Connect sensor’s output to DI1+
1265 +* Connect sensor’s GND DI1-.
1351 1351  
1352 -(((
1353 1353  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1354 -)))
1355 1355  
1356 -(((
1357 -[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1358 -)))
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.**
1359 1359  
1360 -(((
1361 -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.
1362 -)))
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.
1363 1363  
1364 -(((
1365 -
1366 -)))
1367 1367  
1368 -(((
1369 1369  **Example3**: Connect to a 220v high active sensor.
1370 -)))
1371 1371  
1372 -(((
1373 1373  Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1374 -)))
1375 1375  
1376 -* (((
1377 -Connect sensor’s output to DI1+ with a serial 50K resistor
1378 -)))
1379 -* (((
1380 -Connect sensor’s GND DI1-.
1381 -)))
1278 +* Connect sensor’s output to DI1+ with a serial 50K resistor
1279 +* Connect sensor’s GND DI1-.
1382 1382  
1383 -(((
1384 1384  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1385 -)))
1386 1386  
1387 -(((
1388 - [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1389 -)))
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.**
1390 1390  
1391 -(((
1392 -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.
1393 -)))
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.
1394 1394  
1395 -
1396 1396  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1397 1397  
1398 1398  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
... ... @@ -1399,7 +1399,6 @@
1399 1399  
1400 1400  [[image:1653357531600-905.png]]
1401 1401  
1402 -
1403 1403  === 3.6.4 Analog Input Interface ===
1404 1404  
1405 1405  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:
... ... @@ -1427,7 +1427,6 @@
1427 1427  
1428 1428  [[image:1653357648330-671.png||height="155" width="733"]]
1429 1429  
1430 -
1431 1431  === 3.6.5 Relay Output ===
1432 1432  
1433 1433  (((
... ... @@ -1438,12 +1438,10 @@
1438 1438  
1439 1439  [[image:image-20220524100215-10.png||height="382" width="723"]]
1440 1440  
1441 -
1442 1442  == 3.7 LEDs Indicators ==
1443 1443  
1444 1444  [[image:image-20220524100748-11.png]]
1445 1445  
1446 -
1447 1447  = 4. Use AT Command =
1448 1448  
1449 1449  == 4.1 Access AT Command ==
... ... @@ -1644,8 +1644,6 @@
1644 1644  
1645 1645  (((
1646 1646  AT+CFG: Print all settings
1647 -
1648 -
1649 1649  )))
1650 1650  
1651 1651  == 4.2 Common AT Command Sequence ==
... ... @@ -1687,8 +1687,6 @@
1687 1687  
1688 1688  (((
1689 1689  (% style="background-color:#dcdcdc" %)ATZ
1690 -
1691 -
1692 1692  )))
1693 1693  
1694 1694  === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
... ... @@ -1770,7 +1770,6 @@
1770 1770  (% style="background-color:#dcdcdc" %)AT+CLASS=A
1771 1771  ATZ
1772 1772  
1773 -
1774 1774  = 5. FAQ =
1775 1775  
1776 1776  == 5.1 How to upgrade the image? ==
... ... @@ -1801,7 +1801,6 @@
1801 1801  
1802 1802  [[image:1653360054704-518.png||height="186" width="745"]]
1803 1803  
1804 -
1805 1805  (((
1806 1806  (((
1807 1807  == 5.2 How to change the LoRa Frequency Bands/Region? ==
... ... @@ -1810,8 +1810,6 @@
1810 1810  
1811 1811  (((
1812 1812  User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1813 -
1814 -
1815 1815  )))
1816 1816  
1817 1817  (((
... ... @@ -1865,18 +1865,10 @@
1865 1865  
1866 1866  [[image:1653360498588-932.png||height="485" width="726"]]
1867 1867  
1868 -
1869 1869  == 5.4 Can I see counting event in Serial? ==
1870 1870  
1871 1871  (((
1872 1872  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.
1873 -
1874 -
1875 -== 5.5 Can i use point to point communication for LT-22222-L? ==
1876 -
1877 -Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]
1878 -
1879 -
1880 1880  )))
1881 1881  
1882 1882  (((
... ... @@ -1890,8 +1890,10 @@
1890 1890  )))
1891 1891  
1892 1892  (((
1893 -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:
1894 1894  
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 +
1895 1895  
1896 1896  )))
1897 1897  
... ... @@ -1900,7 +1900,9 @@
1900 1900  )))
1901 1901  
1902 1902  (((
1903 -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/]]
1904 1904  )))
1905 1905  
1906 1906  (((
... ... @@ -1912,7 +1912,9 @@
1912 1912  )))
1913 1913  
1914 1914  (((
1915 -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]]
1916 1916  )))
1917 1917  
1918 1918  (((
... ... @@ -1986,8 +1986,6 @@
1986 1986  (((
1987 1987  * (((
1988 1988  (% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779
1989 -
1990 -
1991 1991  )))
1992 1992  
1993 1993  = 8. Packing Info =
... ... @@ -2020,8 +2020,6 @@
2020 2020  * Device Weight: 105g
2021 2021  * Package Size / pcs : 14.5 x 8 x 5 cm
2022 2022  * Weight / pcs : 170g
2023 -
2024 -
2025 2025  )))
2026 2026  )))
2027 2027  
... ... @@ -2043,8 +2043,6 @@
2043 2043  (((
2044 2044  (((
2045 2045   [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
2046 -
2047 -
2048 2048  )))
2049 2049  
2050 2050  (((
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