Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 77.3 >
edited by Xiaoling
on 2022/06/10 08:37
To version < 68.13 >
edited by Xiaoling
on 2022/05/25 15:14
>
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Summary

Details

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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  )))
... ... @@ -160,8 +160,6 @@
160 160  )))
161 161  * (((
162 162  Packet engine up to 256 bytes with CRC.
163 -
164 -
165 165  )))
166 166  
167 167  == 1.3 Features ==
... ... @@ -206,7 +206,6 @@
206 206  
207 207  [[image:1653297104069-180.png]]
208 208  
209 -
210 210  = 3. Operation Mode =
211 211  
212 212  == 3.1 How it works? ==
... ... @@ -217,8 +217,6 @@
217 217  
218 218  (((
219 219  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.
220 -
221 -
222 222  )))
223 223  
224 224  == 3.2 Example to join LoRaWAN network ==
... ... @@ -249,12 +249,10 @@
249 249  
250 250  [[image:1653297955910-247.png||height="321" width="716"]]
251 251  
252 -
253 253  Add APP KEY and DEV EUI
254 254  
255 255  [[image:1653298023685-319.png]]
256 256  
257 -
258 258  (((
259 259  **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.
260 260  )))
... ... @@ -261,7 +261,6 @@
261 261  
262 262  [[image:1653298044601-602.png||height="405" width="709"]]
263 263  
264 -
265 265  == 3.3 Uplink Payload ==
266 266  
267 267  There are five working modes + one interrupt mode on LT for different type application:
... ... @@ -415,7 +415,6 @@
415 415  )))
416 416  )))
417 417  
418 -
419 419  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
420 420  
421 421  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -456,8 +456,6 @@
456 456  
457 457  (((
458 458  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
459 -
460 -
461 461  )))
462 462  
463 463  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
... ... @@ -540,7 +540,6 @@
540 540  )))
541 541  )))
542 542  
543 -
544 544  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
545 545  
546 546  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -581,8 +581,6 @@
581 581  
582 582  (((
583 583  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
584 -
585 -
586 586  )))
587 587  
588 588  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
... ... @@ -611,7 +611,6 @@
611 611  
612 612  AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
613 613  
614 -
615 615  (% style="color:#4f81bd" %)**Trigger base on current**:
616 616  
617 617  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
... ... @@ -620,7 +620,6 @@
620 620  
621 621  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
622 622  
623 -
624 624  (% style="color:#4f81bd" %)**Trigger base on DI status**:
625 625  
626 626  DI status trigger Flag.
... ... @@ -707,13 +707,10 @@
707 707  
708 708  When device got this command, it will send the MOD6 payload.
709 709  
710 -
711 711  === 3.3.7 Payload Decoder ===
712 712  
713 713  (((
714 714  **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/]]
715 -
716 -
717 717  )))
718 718  
719 719  == 3.4 ​Configure LT via AT or Downlink ==
... ... @@ -724,7 +724,7 @@
724 724  There are two kinds of Commands:
725 725  )))
726 726  
727 -* (% 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
728 728  
729 729  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
730 730  
... ... @@ -732,7 +732,6 @@
732 732  
733 733  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]]
734 734  
735 -
736 736  === 3.4.2 Sensor related commands ===
737 737  
738 738  ==== 3.4.2.1 Set Transmit Interval ====
... ... @@ -755,7 +755,6 @@
755 755  **0x01 aa bb cc     ~/~/ Same as AT+TDC=0x(aa bb cc)**
756 756  )))
757 757  
758 -
759 759  ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
760 760  
761 761  Set work mode.
... ... @@ -776,7 +776,6 @@
776 776  **0x0A aa     ~/~/ Same as AT+MOD=aa**
777 777  )))
778 778  
779 -
780 780  ==== 3.4.2.3 Poll an uplink ====
781 781  
782 782  * AT Command:
... ... @@ -792,10 +792,9 @@
792 792  
793 793  **Example**: 0x08FF, ask device to send an Uplink
794 794  
795 -
796 796  ==== 3.4.2.4 Enable Trigger Mode ====
797 797  
798 -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]]
799 799  
800 800  * AT Command:
801 801  
... ... @@ -815,7 +815,6 @@
815 815  **0x0A 06 aa     ~/~/ Same as AT+ADDMOD6=aa,**
816 816  )))
817 817  
818 -
819 819  ==== 3.4.2.5 Poll trigger settings ====
820 820  
821 821  Poll trigger settings,
... ... @@ -831,7 +831,6 @@
831 831  **0xAB 06  ~/~/ Poll trigger settings, device will uplink trigger settings once receive this command**
832 832  )))
833 833  
834 -
835 835  ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
836 836  
837 837  Enable Disable DI1/DI2/DI2 as trigger,
... ... @@ -854,7 +854,6 @@
854 854  **0xAA 02 aa bb  ~/~/ Same as AT+DTRI=aa,bb**
855 855  )))
856 856  
857 -
858 858  ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
859 859  
860 860  Set DI1 or DI3(for LT-33222-L) trigger.
... ... @@ -881,7 +881,6 @@
881 881  **0x09 01 aa bb cc ~/~/ same as AT+TRIG1=aa,0x(bb cc)**
882 882  )))
883 883  
884 -
885 885  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
886 886  
887 887  Set DI2 trigger.
... ... @@ -908,10 +908,9 @@
908 908  **0x09 02 aa bb cc ~/~/ same as AT+TRIG1=aa,0x(bb cc)**
909 909  )))
910 910  
911 -
912 912  ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
913 913  
914 -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]]
915 915  
916 916  * AT Command:
917 917  
... ... @@ -924,19 +924,18 @@
924 924  
925 925  (% class="box infomessage" %)
926 926  (((
927 -**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]]**
928 928  )))
929 929  
930 -
931 931  ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
932 932  
933 -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]]
934 934  
935 935  * AT Command:
936 936  
937 937  (% class="box infomessage" %)
938 938  (((
939 -**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]]**
940 940  )))
941 941  
942 942  * Downlink Payload (prefix 0xAA 00 ):
... ... @@ -943,10 +943,9 @@
943 943  
944 944  (% class="box infomessage" %)
945 945  (((
946 -**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]] **
947 947  )))
948 948  
949 -
950 950  ==== 3.4.2.11 Trigger – Set minimum interval ====
951 951  
952 952  Set AV and AC trigger minimum interval, system won’t response to the second trigger within this set time after the first trigger.
... ... @@ -965,7 +965,6 @@
965 965  **0x AC aa bb ~/~/ same as AT+ATDC=0x(aa bb)   . Unit (min)**
966 966  )))
967 967  
968 -
969 969  ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
970 970  
971 971  * AT Command:
... ... @@ -1140,13 +1140,13 @@
1140 1140  
1141 1141  ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1142 1142  
1143 -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]]
1144 1144  
1145 1145  * AT Command:
1146 1146  
1147 1147  (% class="box infomessage" %)
1148 1148  (((
1149 -**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]]**
1150 1150  )))
1151 1151  
1152 1152  * Downlink Payload (prefix 0xA5):
... ... @@ -1156,7 +1156,6 @@
1156 1156  **0xA5 aa bb cc   ~/~/ Same as AT+VOLMAX=(aa bb),cc**
1157 1157  )))
1158 1158  
1159 -
1160 1160  ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1161 1161  
1162 1162  * AT Command:
... ... @@ -1181,7 +1181,6 @@
1181 1181  **0x A8 aa bb cc dd ee     ~/~/ same as AT+SETCNT=aa,(bb cc dd ee)**
1182 1182  )))
1183 1183  
1184 -
1185 1185  ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1186 1186  
1187 1187  Clear counting for counting mode
... ... @@ -1200,7 +1200,6 @@
1200 1200  **0x A6 01     ~/~/ clear all counting,**
1201 1201  )))
1202 1202  
1203 -
1204 1204  ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1205 1205  
1206 1206  * AT Command:
... ... @@ -1219,8 +1219,6 @@
1219 1219  
1220 1220  (((
1221 1221  range: aa bb cc:0 to 16777215,  (unit:second)
1222 -
1223 -
1224 1224  )))
1225 1225  
1226 1226  == 3.5 Integrate with Mydevice ==
... ... @@ -1241,7 +1241,6 @@
1241 1241  
1242 1242  [[image:image-20220524094641-12.png||height="402" width="718"]]
1243 1243  
1244 -
1245 1245  **Step 3**: Create an account or log in Mydevices.
1246 1246  
1247 1247  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
... ... @@ -1250,7 +1250,6 @@
1250 1250  
1251 1251  [[image:1653356838789-523.png||height="337" width="740"]]
1252 1252  
1253 -
1254 1254  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1255 1255  
1256 1256  [[image:image-20220524094909-1.png||height="335" width="729"]]
... ... @@ -1263,7 +1263,6 @@
1263 1263  
1264 1264  [[image:image-20220524094909-5.png||height="341" width="734"]]
1265 1265  
1266 -
1267 1267  == 3.6 Interface Detail ==
1268 1268  
1269 1269  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
... ... @@ -1272,7 +1272,6 @@
1272 1272  
1273 1273  [[image:1653356991268-289.png]]
1274 1274  
1275 -
1276 1276  === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1277 1277  
1278 1278  (((
... ... @@ -1288,105 +1288,51 @@
1288 1288  [[image:1653357170703-587.png]]
1289 1289  
1290 1290  (((
1291 -(((
1292 1292  When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1293 1293  )))
1294 -)))
1295 1295  
1296 -(((
1297 -
1298 -)))
1299 1299  
1300 -(((
1301 1301  **Example1**: Connect to a Low active sensor.
1302 -)))
1303 1303  
1304 -(((
1305 1305  This type of sensor will output a low signal GND when active.
1306 -)))
1307 1307  
1308 -* (((
1309 -Connect sensor’s output to DI1-
1310 -)))
1311 -* (((
1312 -Connect sensor’s VCC to DI1+.
1313 -)))
1250 +* Connect sensor’s output to DI1-
1251 +* Connect sensor’s VCC to DI1+.
1314 1314  
1315 -(((
1316 -So when sensor active, the current between NEC2501 pin1 and pin2 is：
1317 -)))
1253 +So when sensor active, the current between NEC2501 pin1 and pin2 is： ​​
1318 1318  
1319 -(((
1320 -[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1321 -)))
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:/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:/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:/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:/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:/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:/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:/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.**
1322 1322  
1323 -(((
1324 -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.
1325 -)))
1257 +If DI1+ = 12v, the //IF// = 12mA , So the LT-22222-L will be able to detect this active signal.
1326 1326  
1327 -(((
1328 -
1329 -)))
1330 1330  
1331 -(((
1332 1332  **Example2**: Connect to a High active sensor.
1333 -)))
1334 1334  
1335 -(((
1336 1336  This type of sensor will output a high signal (example 24v) when active.
1337 -)))
1338 1338  
1339 -* (((
1340 -Connect sensor’s output to DI1+
1341 -)))
1342 -* (((
1343 -Connect sensor’s GND DI1-.
1344 -)))
1264 +* Connect sensor’s output to DI1+
1265 +* Connect sensor’s GND DI1-.
1345 1345  
1346 -(((
1347 1347  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1348 -)))
1349 1349  
1350 -(((
1351 -[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1352 -)))
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:/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:/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:/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:/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:/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:/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:/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.**
1353 1353  
1354 -(((
1355 -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.
1356 -)))
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:/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:/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:/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:/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:/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:/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:/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.
1357 1357  
1358 -(((
1359 -
1360 -)))
1361 1361  
1362 -(((
1363 1363  **Example3**: Connect to a 220v high active sensor.
1364 -)))
1365 1365  
1366 -(((
1367 1367  Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1368 -)))
1369 1369  
1370 -* (((
1371 -Connect sensor’s output to DI1+ with a serial 50K resistor
1372 -)))
1373 -* (((
1374 -Connect sensor’s GND DI1-.
1375 -)))
1278 +* Connect sensor’s output to DI1+ with a serial 50K resistor
1279 +* Connect sensor’s GND DI1-.
1376 1376  
1377 -(((
1378 1378  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1379 -)))
1380 1380  
1381 -(((
1382 - [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1383 -)))
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:/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:/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:/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:/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:/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:/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:/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.**
1384 1384  
1385 -(((
1386 -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.
1387 -)))
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.
1388 1388  
1389 -
1390 1390  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1391 1391  
1392 1392  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
... ... @@ -1393,7 +1393,6 @@
1393 1393  
1394 1394  [[image:1653357531600-905.png]]
1395 1395  
1396 -
1397 1397  === 3.6.4 Analog Input Interface ===
1398 1398  
1399 1399  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:
... ... @@ -1421,7 +1421,6 @@
1421 1421  
1422 1422  [[image:1653357648330-671.png||height="155" width="733"]]
1423 1423  
1424 -
1425 1425  === 3.6.5 Relay Output ===
1426 1426  
1427 1427  (((
... ... @@ -1432,12 +1432,10 @@
1432 1432  
1433 1433  [[image:image-20220524100215-10.png||height="382" width="723"]]
1434 1434  
1435 -
1436 1436  == 3.7 LEDs Indicators ==
1437 1437  
1438 1438  [[image:image-20220524100748-11.png]]
1439 1439  
1440 -
1441 1441  = 4. Use AT Command =
1442 1442  
1443 1443  == 4.1 Access AT Command ==
... ... @@ -1638,8 +1638,6 @@
1638 1638  
1639 1639  (((
1640 1640  AT+CFG: Print all settings
1641 -
1642 -
1643 1643  )))
1644 1644  
1645 1645  == 4.2 Common AT Command Sequence ==
... ... @@ -1681,8 +1681,6 @@
1681 1681  
1682 1682  (((
1683 1683  (% style="background-color:#dcdcdc" %)ATZ
1684 -
1685 -
1686 1686  )))
1687 1687  
1688 1688  === 4.2.2 Single-channel ABP mode (Use with LG01/LG02) ===
... ... @@ -1764,7 +1764,6 @@
1764 1764  (% style="background-color:#dcdcdc" %)AT+CLASS=A
1765 1765  ATZ
1766 1766  
1767 -
1768 1768  = 5. FAQ =
1769 1769  
1770 1770  == 5.1 How to upgrade the image? ==
... ... @@ -1795,7 +1795,6 @@
1795 1795  
1796 1796  [[image:1653360054704-518.png||height="186" width="745"]]
1797 1797  
1798 -
1799 1799  (((
1800 1800  (((
1801 1801  == 5.2 How to change the LoRa Frequency Bands/Region? ==
... ... @@ -1804,8 +1804,6 @@
1804 1804  
1805 1805  (((
1806 1806  User can follow the introduction for [[how to upgrade image>>||anchor="H5.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1807 -
1808 -
1809 1809  )))
1810 1810  
1811 1811  (((
... ... @@ -1859,18 +1859,10 @@
1859 1859  
1860 1860  [[image:1653360498588-932.png||height="485" width="726"]]
1861 1861  
1862 -
1863 1863  == 5.4 Can I see counting event in Serial? ==
1864 1864  
1865 1865  (((
1866 1866  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.
1867 -
1868 -
1869 -== 5.5 Can i use point to point communication for LT-22222-L? ==
1870 -
1871 -Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]
1872 -
1873 -
1874 1874  )))
1875 1875  
1876 1876  (((
... ... @@ -1884,8 +1884,11 @@
1884 1884  )))
1885 1885  
1886 1886  (((
1887 -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: [[How it work>>LoRaWAN_Communication_Debug]]
1888 1888  
1766 +
1767 +[[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]]
1768 +
1889 1889  
1890 1890  )))
1891 1891  
... ... @@ -1894,7 +1894,9 @@
1894 1894  )))
1895 1895  
1896 1896  (((
1897 -See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
1777 +See this link for trouble shooting:
1778 +
1779 +[[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/]]
1898 1898  )))
1899 1899  
1900 1900  (((
... ... @@ -1906,7 +1906,9 @@
1906 1906  )))
1907 1907  
1908 1908  (((
1909 -It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1791 +It might be about the channels mapping. Please see this link for detail:
1792 +
1793 +[[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]]
1910 1910  )))
1911 1911  
1912 1912  (((
... ... @@ -1980,8 +1980,6 @@
1980 1980  (((
1981 1981  * (((
1982 1982  (% style="color:#4f81bd" %)**CN779**(%%): LT with frequency bands CN779
1983 -
1984 -
1985 1985  )))
1986 1986  
1987 1987  = 8. Packing Info =
... ... @@ -2014,8 +2014,6 @@
2014 2014  * Device Weight: 105g
2015 2015  * Package Size / pcs : 14.5 x 8 x 5 cm
2016 2016  * Weight / pcs : 170g
2017 -
2018 -
2019 2019  )))
2020 2020  )))
2021 2021  
... ... @@ -2037,8 +2037,6 @@
2037 2037  (((
2038 2038  (((
2039 2039   [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
2040 -
2041 -
2042 2042  )))
2043 2043  
2044 2044  (((
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