Last modified by Saxer Lin on 2025/04/15 17:24
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From version < 70.1 >
edited by Xiaoling
on 2022/05/31 11:27
To version < 76.1 >
edited by Edwin Chen
on 2022/06/02 15:20
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1 -XWiki.Xiaoling
1 +XWiki.Edwin
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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.
19 +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.
27 +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  (((
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604 604  
605 605  AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
606 606  
607 +
607 607  (% style="color:#4f81bd" %)**Trigger base on current**:
608 608  
609 609  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
... ... @@ -612,6 +612,7 @@
612 612  
613 613  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
614 614  
616 +
615 615  (% style="color:#4f81bd" %)**Trigger base on DI status**:
616 616  
617 617  DI status trigger Flag.
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715 715  There are two kinds of Commands:
716 716  )))
717 717  
718 -* (% 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
720 +* (% 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]]
719 719  
720 720  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
721 721  
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786 786  
787 787  ==== 3.4.2.4 Enable Trigger Mode ====
788 788  
789 -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]]
791 +Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
790 790  
791 791  * AT Command:
792 792  
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902 902  
903 903  ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
904 904  
905 -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]]
907 +Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
906 906  
907 907  * AT Command:
908 908  
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915 915  
916 916  (% class="box infomessage" %)
917 917  (((
918 -**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]]**
920 +**0x AA 01 aa bb cc dd ee ff gg hh ~/~/ same as AT+ACLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
919 919  )))
920 920  
921 921  
922 922  ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
923 923  
924 -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]]
926 +Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
925 925  
926 926  * AT Command:
927 927  
928 928  (% class="box infomessage" %)
929 929  (((
930 -**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]]**
932 +**AT+AVLIM. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
931 931  )))
932 932  
933 933  * Downlink Payload (prefix 0xAA 00 ):
... ... @@ -934,7 +934,7 @@
934 934  
935 935  (% class="box infomessage" %)
936 936  (((
937 -**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]] **
939 +**0x AA 00 aa bb cc dd ee ff gg hh ~/~/ same as AT+AVLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]] **
938 938  )))
939 939  
940 940  
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1131 1131  
1132 1132  ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1133 1133  
1134 -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]]
1136 +When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1135 1135  
1136 1136  * AT Command:
1137 1137  
1138 1138  (% class="box infomessage" %)
1139 1139  (((
1140 -**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]]**
1142 +**AT+VOLMAX    ~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]**
1141 1141  )))
1142 1142  
1143 1143  * Downlink Payload (prefix 0xA5):
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1232 1232  
1233 1233  [[image:image-20220524094641-12.png||height="402" width="718"]]
1234 1234  
1237 +
1235 1235  **Step 3**: Create an account or log in Mydevices.
1236 1236  
1237 1237  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
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1278 1278  [[image:1653357170703-587.png]]
1279 1279  
1280 1280  (((
1284 +(((
1281 1281  When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1282 1282  )))
1287 +)))
1283 1283  
1289 +(((
1290 +
1291 +)))
1284 1284  
1293 +(((
1285 1285  **Example1**: Connect to a Low active sensor.
1295 +)))
1286 1286  
1297 +(((
1287 1287  This type of sensor will output a low signal GND when active.
1299 +)))
1288 1288  
1289 -* Connect sensor’s output to DI1-
1290 -* Connect sensor’s VCC to DI1+.
1301 +* (((
1302 +Connect sensor’s output to DI1-
1303 +)))
1304 +* (((
1305 +Connect sensor’s VCC to DI1+.
1306 +)))
1291 1291  
1292 -So when sensor active, the current between NEC2501 pin1 and pin2 is： ​​
1308 +(((
1309 +So when sensor active, the current between NEC2501 pin1 and pin2 is：
1310 +)))
1293 1293  
1294 -[[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.**
1312 +(((
1313 +[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1314 +)))
1295 1295  
1296 -If DI1+ = 12v, the //IF// = 12mA , So the LT-22222-L will be able to detect this active signal.
1316 +(((
1317 +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.
1318 +)))
1297 1297  
1320 +(((
1321 +
1322 +)))
1298 1298  
1324 +(((
1299 1299  **Example2**: Connect to a High active sensor.
1326 +)))
1300 1300  
1328 +(((
1301 1301  This type of sensor will output a high signal (example 24v) when active.
1330 +)))
1302 1302  
1303 -* Connect sensor’s output to DI1+
1304 -* Connect sensor’s GND DI1-.
1332 +* (((
1333 +Connect sensor’s output to DI1+
1334 +)))
1335 +* (((
1336 +Connect sensor’s GND DI1-.
1337 +)))
1305 1305  
1339 +(((
1306 1306  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1341 +)))
1307 1307  
1308 -[[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.**
1343 +(((
1344 +[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1345 +)))
1309 1309  
1310 -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.
1347 +(((
1348 +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.
1349 +)))
1311 1311  
1351 +(((
1352 +
1353 +)))
1312 1312  
1355 +(((
1313 1313  **Example3**: Connect to a 220v high active sensor.
1357 +)))
1314 1314  
1359 +(((
1315 1315  Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1361 +)))
1316 1316  
1317 -* Connect sensor’s output to DI1+ with a serial 50K resistor
1318 -* Connect sensor’s GND DI1-.
1363 +* (((
1364 +Connect sensor’s output to DI1+ with a serial 50K resistor
1365 +)))
1366 +* (((
1367 +Connect sensor’s GND DI1-.
1368 +)))
1319 1319  
1370 +(((
1320 1320  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1372 +)))
1321 1321  
1322 - [[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.**
1374 +(((
1375 + [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1376 +)))
1323 1323  
1324 -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.
1378 +(((
1379 +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.
1380 +)))
1325 1325  
1326 1326  
1327 1327  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
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1802 1802  (((
1803 1803  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.
1804 1804  
1861 +
1862 +== 5.5 Can i use point to point communication for LT-22222-L? ==
1863 +
1864 +Yes, please refer [[Point to Point Communication>> Point to Point Communication of LT-22222-L]]
1865 +
1805 1805  
1806 1806  )))
1807 1807  
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