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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 68.23
edited by Xiaoling
on 2022/05/31 11:08
Change comment: There is no comment for this version
To version 77.31
edited by Xiaoling
on 2022/06/10 08:43
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -11,12 +11,15 @@
11 11  
12 12  
13 13  
14 +
15 +
16 +
14 14  = 1.Introduction =
15 15  
16 16  == 1.1 What is LT Series I/O Controller ==
17 17  
18 18  (((
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.
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.
20 20  )))
21 21  
22 22  (((
... ... @@ -24,7 +24,7 @@
24 24  )))
25 25  
26 26  (((
27 -The LT I/O Controllers is aiming to provide a simple plug and play, low cost installation by using LoRaWAN wireless technology.
30 +The LT I/O Controllers is aiming to provide an (% style="color:blue" %)**easy and low cost installation** (%%)by using LoRa wireless technology.
28 28  )))
29 29  
30 30  (((
... ... @@ -48,6 +48,8 @@
48 48  == 1.2  Specifications ==
49 49  
50 50  (((
54 +
55 +
51 51  **Hardware System:**
52 52  )))
53 53  
... ... @@ -70,6 +70,7 @@
70 70  )))
71 71  )))
72 72  
78 +
73 73  (((
74 74  **Interface for Model: LT22222-L:**
75 75  )))
... ... @@ -93,6 +93,7 @@
93 93  Power Input 7~~ 24V DC. 
94 94  )))
95 95  
102 +
96 96  (((
97 97  **LoRa Spec:**
98 98  )))
... ... @@ -157,6 +157,8 @@
157 157  
158 158  )))
159 159  
167 +
168 +
160 160  == 1.3 Features ==
161 161  
162 162  * LoRaWAN Class A & Class C protocol
... ... @@ -167,6 +167,8 @@
167 167  * Firmware upgradable via program port
168 168  * Counting
169 169  
179 +
180 +
170 170  == 1.4  Applications ==
171 171  
172 172  * Smart Buildings & Home Automation
... ... @@ -176,6 +176,8 @@
176 176  * Smart Cities
177 177  * Smart Factory
178 178  
190 +
191 +
179 179  == 1.5 Hardware Variants ==
180 180  
181 181  (% border="1" style="background-color:#f7faff; width:500px" %)
... ... @@ -190,6 +190,7 @@
190 190  )))
191 191  
192 192  
206 +
193 193  = 2. Power ON Device =
194 194  
195 195  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.
... ... @@ -201,6 +201,7 @@
201 201  [[image:1653297104069-180.png]]
202 202  
203 203  
218 +
204 204  = 3. Operation Mode =
205 205  
206 206  == 3.1 How it works? ==
... ... @@ -215,6 +215,8 @@
215 215  
216 216  )))
217 217  
233 +
234 +
218 218  == 3.2 Example to join LoRaWAN network ==
219 219  
220 220  (((
... ... @@ -256,6 +256,7 @@
256 256  [[image:1653298044601-602.png||height="405" width="709"]]
257 257  
258 258  
276 +
259 259  == 3.3 Uplink Payload ==
260 260  
261 261  There are five working modes + one interrupt mode on LT for different type application:
... ... @@ -267,6 +267,8 @@
267 267  * **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
268 268  * **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
269 269  
288 +
289 +
270 270  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
271 271  
272 272  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
... ... @@ -302,6 +302,7 @@
302 302  * [1] RO1 relay channel is close and the RO1 LED is ON.
303 303  * [0] RO2 relay channel is open and RO2 LED is OFF;
304 304  
325 +
305 305  **LT22222-L:**
306 306  
307 307  * [1] DI2 channel is high input and DI2 LED is ON;
... ... @@ -317,6 +317,8 @@
317 317  ** DO1 is high in case there is load between DO1 and V+.
318 318  ** DO1 LED is off in both case
319 319  
341 +
342 +
320 320  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
321 321  
322 322  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
... ... @@ -410,6 +410,7 @@
410 410  )))
411 411  
412 412  
436 +
413 413  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
414 414  
415 415  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -454,6 +454,8 @@
454 454  
455 455  )))
456 456  
481 +
482 +
457 457  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
458 458  
459 459  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -535,6 +535,7 @@
535 535  )))
536 536  
537 537  
564 +
538 538  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
539 539  
540 540  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -579,6 +579,8 @@
579 579  
580 580  )))
581 581  
609 +
610 +
582 582  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
583 583  
584 584  (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
... ... @@ -605,6 +605,7 @@
605 605  
606 606  AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
607 607  
637 +
608 608  (% style="color:#4f81bd" %)**Trigger base on current**:
609 609  
610 610  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
... ... @@ -613,6 +613,7 @@
613 613  
614 614  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
615 615  
646 +
616 616  (% style="color:#4f81bd" %)**Trigger base on DI status**:
617 617  
618 618  DI status trigger Flag.
... ... @@ -700,6 +700,7 @@
700 700  When device got this command, it will send the MOD6 payload.
701 701  
702 702  
734 +
703 703  === 3.3.7 Payload Decoder ===
704 704  
705 705  (((
... ... @@ -708,6 +708,8 @@
708 708  
709 709  )))
710 710  
743 +
744 +
711 711  == 3.4 ​Configure LT via AT or Downlink ==
712 712  
713 713  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
... ... @@ -716,15 +716,18 @@
716 716  There are two kinds of Commands:
717 717  )))
718 718  
719 -* (% 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
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]]
720 720  
721 721  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
722 722  
757 +
758 +
723 723  === 3.4.1 Common Commands ===
724 724  
725 725  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]]
726 726  
727 727  
764 +
728 728  === 3.4.2 Sensor related commands ===
729 729  
730 730  ==== 3.4.2.1 Set Transmit Interval ====
... ... @@ -748,6 +748,7 @@
748 748  )))
749 749  
750 750  
788 +
751 751  ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
752 752  
753 753  Set work mode.
... ... @@ -769,6 +769,7 @@
769 769  )))
770 770  
771 771  
810 +
772 772  ==== 3.4.2.3 Poll an uplink ====
773 773  
774 774  * AT Command:
... ... @@ -785,9 +785,10 @@
785 785  **Example**: 0x08FF, ask device to send an Uplink
786 786  
787 787  
827 +
788 788  ==== 3.4.2.4 Enable Trigger Mode ====
789 789  
790 -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]]
830 +Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
791 791  
792 792  * AT Command:
793 793  
... ... @@ -808,6 +808,7 @@
808 808  )))
809 809  
810 810  
851 +
811 811  ==== 3.4.2.5 Poll trigger settings ====
812 812  
813 813  Poll trigger settings,
... ... @@ -824,6 +824,7 @@
824 824  )))
825 825  
826 826  
868 +
827 827  ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
828 828  
829 829  Enable Disable DI1/DI2/DI2 as trigger,
... ... @@ -847,6 +847,7 @@
847 847  )))
848 848  
849 849  
892 +
850 850  ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
851 851  
852 852  Set DI1 or DI3(for LT-33222-L) trigger.
... ... @@ -874,6 +874,7 @@
874 874  )))
875 875  
876 876  
920 +
877 877  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
878 878  
879 879  Set DI2 trigger.
... ... @@ -901,9 +901,10 @@
901 901  )))
902 902  
903 903  
948 +
904 904  ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
905 905  
906 -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]]
951 +Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
907 907  
908 908  * AT Command:
909 909  
... ... @@ -916,19 +916,20 @@
916 916  
917 917  (% class="box infomessage" %)
918 918  (((
919 -**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]]**
964 +**0x AA 01 aa bb cc dd ee ff gg hh ~/~/ same as AT+ACLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
920 920  )))
921 921  
922 922  
968 +
923 923  ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
924 924  
925 -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]]
971 +Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
926 926  
927 927  * AT Command:
928 928  
929 929  (% class="box infomessage" %)
930 930  (((
931 -**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]]**
977 +**AT+AVLIM. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
932 932  )))
933 933  
934 934  * Downlink Payload (prefix 0xAA 00 ):
... ... @@ -935,10 +935,11 @@
935 935  
936 936  (% class="box infomessage" %)
937 937  (((
938 -**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]] **
984 +**0x AA 00 aa bb cc dd ee ff gg hh ~/~/ same as AT+AVLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]] **
939 939  )))
940 940  
941 941  
988 +
942 942  ==== 3.4.2.11 Trigger – Set minimum interval ====
943 943  
944 944  Set AV and AC trigger minimum interval, system won’t response to the second trigger within this set time after the first trigger.
... ... @@ -958,6 +958,7 @@
958 958  )))
959 959  
960 960  
1008 +
961 961  ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
962 962  
963 963  * AT Command:
... ... @@ -990,6 +990,7 @@
990 990  )))
991 991  
992 992  
1041 +
993 993  ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
994 994  
995 995  * AT Command:
... ... @@ -1052,6 +1052,7 @@
1052 1052  DO1 pin no action, DO2 pin set low, DO3 pin set high, last 2 seconds, then DO1 pin no action, DO2 pin set high, DO3 pin set low
1053 1053  
1054 1054  
1104 +
1055 1055  === 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ===
1056 1056  
1057 1057  * AT Command:
... ... @@ -1080,6 +1080,7 @@
1080 1080  Device will upload a packet if downlink code executes successfully.
1081 1081  
1082 1082  
1133 +
1083 1083  ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
1084 1084  
1085 1085  * AT Command:
... ... @@ -1130,15 +1130,16 @@
1130 1130  Relay 1 & relay2 will change to NC, last 2 seconds, then both change to NO.
1131 1131  
1132 1132  
1184 +
1133 1133  ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1134 1134  
1135 -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]]
1187 +When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1136 1136  
1137 1137  * AT Command:
1138 1138  
1139 1139  (% class="box infomessage" %)
1140 1140  (((
1141 -**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]]**
1193 +**AT+VOLMAX    ~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]**
1142 1142  )))
1143 1143  
1144 1144  * Downlink Payload (prefix 0xA5):
... ... @@ -1149,6 +1149,7 @@
1149 1149  )))
1150 1150  
1151 1151  
1204 +
1152 1152  ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
1153 1153  
1154 1154  * AT Command:
... ... @@ -1174,6 +1174,7 @@
1174 1174  )))
1175 1175  
1176 1176  
1230 +
1177 1177  ==== 3.4.2.18 Counting ~-~- Clear Counting ====
1178 1178  
1179 1179  Clear counting for counting mode
... ... @@ -1193,6 +1193,7 @@
1193 1193  )))
1194 1194  
1195 1195  
1250 +
1196 1196  ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
1197 1197  
1198 1198  * AT Command:
... ... @@ -1215,6 +1215,8 @@
1215 1215  
1216 1216  )))
1217 1217  
1273 +
1274 +
1218 1218  == 3.5 Integrate with Mydevice ==
1219 1219  
1220 1220  Mydevices provides a human friendly interface to show the sensor data, once we have data in TTN, we can use Mydevices to connect to TTN and see the data in Mydevices. Below are the steps:
... ... @@ -1233,6 +1233,7 @@
1233 1233  
1234 1234  [[image:image-20220524094641-12.png||height="402" width="718"]]
1235 1235  
1293 +
1236 1236  **Step 3**: Create an account or log in Mydevices.
1237 1237  
1238 1238  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
... ... @@ -1255,6 +1255,7 @@
1255 1255  [[image:image-20220524094909-5.png||height="341" width="734"]]
1256 1256  
1257 1257  
1316 +
1258 1258  == 3.6 Interface Detail ==
1259 1259  
1260 1260  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
... ... @@ -1264,6 +1264,7 @@
1264 1264  [[image:1653356991268-289.png]]
1265 1265  
1266 1266  
1326 +
1267 1267  === 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1268 1268  
1269 1269  (((
... ... @@ -1279,52 +1279,106 @@
1279 1279  [[image:1653357170703-587.png]]
1280 1280  
1281 1281  (((
1342 +(((
1282 1282  When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1283 1283  )))
1345 +)))
1284 1284  
1347 +(((
1348 +
1349 +)))
1285 1285  
1351 +(((
1286 1286  **Example1**: Connect to a Low active sensor.
1353 +)))
1287 1287  
1355 +(((
1288 1288  This type of sensor will output a low signal GND when active.
1357 +)))
1289 1289  
1290 -* Connect sensor’s output to DI1-
1291 -* Connect sensor’s VCC to DI1+.
1359 +* (((
1360 +Connect sensor’s output to DI1-
1361 +)))
1362 +* (((
1363 +Connect sensor’s VCC to DI1+.
1364 +)))
1292 1292  
1293 -So when sensor active, the current between NEC2501 pin1 and pin2 is： ​​
1366 +(((
1367 +So when sensor active, the current between NEC2501 pin1 and pin2 is：
1368 +)))
1294 1294  
1295 -[[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.**
1370 +(((
1371 +[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1372 +)))
1296 1296  
1297 -If DI1+ = 12v, the //IF// = 12mA , So the LT-22222-L will be able to detect this active signal.
1374 +(((
1375 +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.
1376 +)))
1298 1298  
1378 +(((
1379 +
1380 +)))
1299 1299  
1382 +(((
1300 1300  **Example2**: Connect to a High active sensor.
1384 +)))
1301 1301  
1386 +(((
1302 1302  This type of sensor will output a high signal (example 24v) when active.
1388 +)))
1303 1303  
1304 -* Connect sensor’s output to DI1+
1305 -* Connect sensor’s GND DI1-.
1390 +* (((
1391 +Connect sensor’s output to DI1+
1392 +)))
1393 +* (((
1394 +Connect sensor’s GND DI1-.
1395 +)))
1306 1306  
1397 +(((
1307 1307  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1399 +)))
1308 1308  
1309 -[[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.**
1401 +(((
1402 +[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1403 +)))
1310 1310  
1311 -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:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
1405 +(((
1406 +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.
1407 +)))
1312 1312  
1409 +(((
1410 +
1411 +)))
1313 1313  
1413 +(((
1314 1314  **Example3**: Connect to a 220v high active sensor.
1415 +)))
1315 1315  
1417 +(((
1316 1316  Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1419 +)))
1317 1317  
1318 -* Connect sensor’s output to DI1+ with a serial 50K resistor
1319 -* Connect sensor’s GND DI1-.
1421 +* (((
1422 +Connect sensor’s output to DI1+ with a serial 50K resistor
1423 +)))
1424 +* (((
1425 +Connect sensor’s GND DI1-.
1426 +)))
1320 1320  
1428 +(((
1321 1321  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1430 +)))
1322 1322  
1323 - [[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.**
1432 +(((
1433 + [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1434 +)))
1324 1324  
1325 -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.
1436 +(((
1437 +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.
1438 +)))
1326 1326  
1327 1327  
1441 +
1328 1328  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1329 1329  
1330 1330  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
... ... @@ -1332,6 +1332,7 @@
1332 1332  [[image:1653357531600-905.png]]
1333 1333  
1334 1334  
1449 +
1335 1335  === 3.6.4 Analog Input Interface ===
1336 1336  
1337 1337  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:
... ... @@ -1360,6 +1360,7 @@
1360 1360  [[image:1653357648330-671.png||height="155" width="733"]]
1361 1361  
1362 1362  
1478 +
1363 1363  === 3.6.5 Relay Output ===
1364 1364  
1365 1365  (((
... ... @@ -1803,6 +1803,11 @@
1803 1803  (((
1804 1804  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.
1805 1805  
1922 +
1923 +== 5.5 Can i use point to point communication for LT-22222-L? ==
1924 +
1925 +Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]
1926 +
1806 1806  
1807 1807  )))
1808 1808  
... ... @@ -1817,10 +1817,8 @@
1817 1817  )))
1818 1818  
1819 1819  (((
1820 -Please see this link for how to debug: [[LoRaWAN Communication Debug>>LoRaWAN Communication Debug||anchor="H5.1Howitwork"]]
1941 +Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
1821 1821  
1822 -[[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]]
1823 -
1824 1824  
1825 1825  )))
1826 1826  
... ... @@ -1829,9 +1829,7 @@
1829 1829  )))
1830 1830  
1831 1831  (((
1832 -See this link for trouble shooting:
1833 -
1834 -[[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/]]
1951 +See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
1835 1835  )))
1836 1836  
1837 1837  (((
... ... @@ -1843,9 +1843,7 @@
1843 1843  )))
1844 1844  
1845 1845  (((
1846 -It might be about the channels mapping. Please see this link for detail:
1847 -
1848 -[[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]]
1963 +It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1849 1849  )))
1850 1850  
1851 1851  (((
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