Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 44.2 >
edited by Xiaoling
on 2022/05/24 09:50
To version < 57.2 >
edited by Xiaoling
on 2022/05/24 10:14
>
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Summary

Details

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Content
... ... @@ -1051,29 +1051,23 @@
1051 1051  
1052 1052  [[image:1653356838789-523.png||height="337" width="740"]]
1053 1053  
1054 -
1055 1055  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1056 1056  
1057 1057  
1058 -[[image:image-20220524094909-1.png]]
1057 +[[image:image-20220524094909-1.png||height="335" width="729"]]
1059 1059  
1059 +[[image:image-20220524094909-2.png||height="337" width="729"]]
1060 1060  
1061 -[[image:image-20220524094909-2.png]]
1061 +[[image:image-20220524094909-3.png||height="338" width="727"]]
1062 1062  
1063 +[[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1063 1063  
1064 -[[image:image-20220524094909-3.png]]
1065 +[[image:image-20220524094909-5.png||height="341" width="734"]]
1065 1065  
1066 1066  
1067 -[[image:image-20220524094909-4.png]]
1068 1068  
1069 1069  
1070 -[[image:image-20220524094909-5.png]]
1071 1071  
1072 -
1073 -
1074 -
1075 -
1076 -
1077 1077  == 3.6 Interface Detail ==
1078 1078  
1079 1079  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
... ... @@ -1082,19 +1082,21 @@
1082 1082  
1083 1083  [[image:1653356991268-289.png]]
1084 1084  
1079 +=== 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1085 1085  
1086 -
1087 -1.
1088 -11.
1089 -111. Digital Input Port: DI1/DI2 ( For LT-22222-L)
1090 -
1081 +(((
1091 1091  The DI port of LT-22222-L can support NPN or PNP output sensor.
1083 +)))
1092 1092  
1085 +(((
1093 1093  Internal circuit as below, the NEC2501 is a photocoupler, the Active current (from NEC2501 pin 1 to pin 2 is 1ma and the max current is 50mA. When there is active current pass NEC2501 pin1 to pin2. The DI will be active high
1087 +)))
1094 1094  
1095 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
1089 +[[image:1653357170703-587.png]]
1096 1096  
1091 +(((
1097 1097  When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1093 +)))
1098 1098  
1099 1099  
1100 1100  **Example1**: Connect to a Low active sensor.
... ... @@ -1104,11 +1104,11 @@
1104 1104  * Connect sensor’s output to DI1-
1105 1105  * Connect sensor’s VCC to DI1+.
1106 1106  
1107 -So when sensor active, the current between NEC2501 pin1 and pin2 is:
1103 +So when sensor active, the current between NEC2501 pin1 and pin2 is： ​​
1108 1108  
1109 - //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]] = DI1+ / 1K.
1105 + //IF// = DI1+ / 1K.
1110 1110  
1111 -If DI1+ = 12v, the //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]] = 12mA , So the LT-22222-L will be able to detect this active signal.
1107 +If DI1+ = 12v, the //IF// = 12mA , So the LT-22222-L will be able to detect this active signal.
1112 1112  
1113 1113  
1114 1114  **Example2**: Connect to a High active sensor.
... ... @@ -1120,12 +1120,12 @@
1120 1120  
1121 1121  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1122 1122  
1123 - //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]] = DI1+ / 1K.
1119 +[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/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.**
1124 1124  
1125 -If DI1+ = 24v, the //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]] = 24mA , So the LT-22222-L will be able to detect this high active signal.
1121 +If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/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.
1126 1126  
1127 1127  
1128 -**Example3**: Connect to a 220v high active sensor.公司测试一下
1124 +**Example3**: Connect to a 220v high active sensor.
1129 1129  
1130 1130  Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1131 1131  
... ... @@ -1134,34 +1134,24 @@
1134 1134  
1135 1135  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1136 1136  
1137 - //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]] = DI1+ / 51K.
1133 + [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/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.**
1138 1138  
1139 -If sensor output is 220v, the //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]] = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1135 +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.
1140 1140  
1137 +=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1141 1141  
1142 -1.
1143 -11.
1144 -111. Digital Output Port: DO1/DO2 /DO3
1145 -
1146 1146  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
1147 1147  
1148 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
1141 +[[image:1653357531600-905.png]]
1149 1149  
1143 +=== 3.6.4 Analog Input Interface ===
1150 1150  
1151 -
1152 -
1153 -1.
1154 -11.
1155 -111. Analog Input Interface
1156 -
1157 1157  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:
1158 1158  
1159 -AC2 = (IN2 voltage )/12
1147 +**AC2 = (IN2 voltage )/12**
1160 1160  
1161 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
1149 +[[image:1653357592296-182.png]]
1162 1162  
1163 -
1164 -
1165 1165  Example to connect a 4~~20mA sensor
1166 1166  
1167 1167  We take the wind speed sensor as an example for reference only.
... ... @@ -1177,174 +1177,225 @@
1177 1177  
1178 1178  Connection diagram:
1179 1179  
1180 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.jpg]]
1166 +[[image:1653357640609-758.png]]
1181 1181  
1182 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
1168 +[[image:1653357648330-671.png||height="155" width="733"]]
1183 1183  
1170 +=== 3.6.5 Relay Output ===
1184 1184  
1185 -
1186 -1.
1187 -11.
1188 -111. Relay Output
1189 -
1172 +(((
1190 1190  The LT serial controller has two relay interfaces; each interface uses two pins of the screw terminal. User can connect other device’s Power Line to in serial of RO1_1 and RO_2. Such as below:
1174 +)))
1191 1191  
1192 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1176 +[[image:image-20220524100215-9.png]]
1193 1193  
1178 +[[image:image-20220524100215-10.png||height="382" width="723"]]
1194 1194  
1195 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1180 +== 3.7 LEDs Indicators ==
1196 1196  
1182 +[[image:image-20220524100748-11.png]]
1197 1197  
1184 += 4. Use AT Command =
1198 1198  
1186 +== 4.1 Access AT Command ==
1199 1199  
1200 -
1201 -1.
1202 -11. LEDs Indicators
1203 -
1204 -(% border="1" style="background-color:#f7faff" %)
1205 -|**LEDs**|**Feature**
1206 -|**PWR**|Always on if there is power
1207 -|**SYS**|After device is powered on, the SYS will **fast blink in GREEN** for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be **on GREEN for 5 seconds. **SYS will **blink Blue** on every upload and **blink Green** once receive a downlink message.
1208 -|**TX**|(((
1209 -Device boot: TX blinks 5 times.
1210 -
1211 -Successful join network: TX ON for 5 seconds.
1212 -
1213 -Transmit a LoRa packet: TX blinks once
1214 -)))
1215 -|**RX**|RX blinks once when receive a packet.
1216 -|**DO1**|
1217 -|**DO2**|
1218 -|**DO3**|
1219 -|**DI2**|(((
1220 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1221 -
1222 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1223 -)))
1224 -|**DI2**|(((
1225 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1226 -
1227 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1228 -)))
1229 -|**DI3**|For LT-33222-L ONLY: ON when DI3 is low, LOW when DI3 is high
1230 -|**DI2**|(((
1231 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1232 -
1233 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1234 -)))
1235 -|**RO1**|
1236 -|**RO2**|
1237 -
1238 -1. Use AT Command
1239 -11. Access AT Command
1240 -
1241 1241  LT supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to LT for using AT command, as below.
1242 1242  
1243 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1190 +[[image:1653358238933-385.png]]
1244 1244  
1192 +In PC, User needs to set (% style="color:#4f81bd" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**)(%%) to active it. As shown below:
1245 1245  
1246 -In PC, User needs to set **serial tool**(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to **9600** to access to access serial console for LT. The AT commands are disable by default and need to enter password (default:**123456**) to active it. As shown below:
1194 +[[image:1653358355238-883.png]]
1247 1247  
1248 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1249 -
1250 -
1251 1251  More detail AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1252 1252  
1198 +(((
1253 1253  AT+<CMD>?        : Help on <CMD>
1200 +)))
1254 1254  
1202 +(((
1255 1255  AT+<CMD>         : Run <CMD>
1204 +)))
1256 1256  
1206 +(((
1257 1257  AT+<CMD>=<value> : Set the value
1208 +)))
1258 1258  
1210 +(((
1259 1259  AT+<CMD>=?       : Get the value
1212 +)))
1260 1260  
1214 +(((
1261 1261  ATZ: Trig a reset of the MCU
1216 +)))
1262 1262  
1218 +(((
1263 1263  AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1220 +)))
1264 1264  
1222 +(((
1265 1265  AT+DEUI: Get or Set the Device EUI
1224 +)))
1266 1266  
1226 +(((
1267 1267  AT+DADDR: Get or Set the Device Address
1228 +)))
1268 1268  
1230 +(((
1269 1269  AT+APPKEY: Get or Set the Application Key
1232 +)))
1270 1270  
1234 +(((
1271 1271  AT+NWKSKEY: Get or Set the Network Session Key
1236 +)))
1272 1272  
1238 +(((
1273 1273  AT+APPSKEY: Get or Set the Application Session Key
1240 +)))
1274 1274  
1242 +(((
1275 1275  AT+APPEUI: Get or Set the Application EUI
1244 +)))
1276 1276  
1246 +(((
1277 1277  AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1248 +)))
1278 1278  
1250 +(((
1279 1279  AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1252 +)))
1280 1280  
1254 +(((
1281 1281  AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1256 +)))
1282 1282  
1258 +(((
1283 1283  AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1260 +)))
1284 1284  
1262 +(((
1285 1285  AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1264 +)))
1286 1286  
1266 +(((
1287 1287  AT+RX2FQ: Get or Set the Rx2 window frequency
1268 +)))
1288 1288  
1270 +(((
1289 1289  AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1272 +)))
1290 1290  
1274 +(((
1291 1291  AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1276 +)))
1292 1292  
1278 +(((
1293 1293  AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1280 +)))
1294 1294  
1282 +(((
1295 1295  AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1284 +)))
1296 1296  
1286 +(((
1297 1297  AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1288 +)))
1298 1298  
1290 +(((
1299 1299  AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1292 +)))
1300 1300  
1294 +(((
1301 1301  AT+NWKID: Get or Set the Network ID
1296 +)))
1302 1302  
1298 +(((
1303 1303  AT+FCU: Get or Set the Frame Counter Uplink
1300 +)))
1304 1304  
1302 +(((
1305 1305  AT+FCD: Get or Set the Frame Counter Downlink
1304 +)))
1306 1306  
1306 +(((
1307 1307  AT+CLASS: Get or Set the Device Class
1308 +)))
1308 1308  
1310 +(((
1309 1309  AT+JOIN: Join network
1312 +)))
1310 1310  
1314 +(((
1311 1311  AT+NJS: Get OTAA Join Status
1316 +)))
1312 1312  
1318 +(((
1313 1313  AT+SENDB: Send hexadecimal data along with the application port
1320 +)))
1314 1314  
1322 +(((
1315 1315  AT+SEND: Send text data along with the application port
1324 +)))
1316 1316  
1326 +(((
1317 1317  AT+RECVB: Print last received data in binary format (with hexadecimal values)
1328 +)))
1318 1318  
1330 +(((
1319 1319  AT+RECV: Print last received data in raw format
1332 +)))
1320 1320  
1334 +(((
1321 1321  AT+VER: Get current image version and Frequency Band
1336 +)))
1322 1322  
1338 +(((
1323 1323  AT+CFM: Get or Set the confirmation mode (0-1)
1340 +)))
1324 1324  
1342 +(((
1325 1325  AT+CFS: Get confirmation status of the last AT+SEND (0-1)
1344 +)))
1326 1326  
1346 +(((
1327 1327  AT+SNR: Get the SNR of the last received packet
1348 +)))
1328 1328  
1350 +(((
1329 1329  AT+RSSI: Get the RSSI of the last received packet
1352 +)))
1330 1330  
1354 +(((
1331 1331  AT+TDC: Get or set the application data transmission interval in ms
1356 +)))
1332 1332  
1358 +(((
1333 1333  AT+PORT: Get or set the application port
1360 +)))
1334 1334  
1362 +(((
1335 1335  AT+DISAT: Disable AT commands
1364 +)))
1336 1336  
1366 +(((
1337 1337  AT+PWORD: Set password, max 9 digits
1368 +)))
1338 1338  
1370 +(((
1339 1339  AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1372 +)))
1340 1340  
1374 +(((
1341 1341  AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1376 +)))
1342 1342  
1378 +(((
1343 1343  AT+CFG: Print all settings
1380 +)))
1344 1344  
1345 1345  
1346 1346  
1347 -1.
1384 +1.
1348 1348  11. Common AT Command Sequence
1349 1349  111. Multi-channel ABP mode (Use with SX1301/LG308)
1350 1350  
... ... @@ -1367,8 +1367,8 @@
1367 1367  
1368 1368  ATZ
1369 1369  
1370 -1.
1371 -11.
1407 +1.
1408 +11.
1372 1372  111. Single-channel ABP mode (Use with LG01/LG02)
1373 1373  
1374 1374  123456   Enter Password to have AT access.
... ... @@ -1408,7 +1408,7 @@
1408 1408  
1409 1409  
1410 1410  1.
1411 -11.
1448 +11.
1412 1412  111. Change to Class A
1413 1413  
1414 1414  If sensor JOINED
... ... @@ -1423,7 +1423,7 @@
1423 1423  
1424 1424  1. FAQ
1425 1425  
1426 -1.
1463 +1.
1427 1427  11. How to upgrade the image?
1428 1428  
1429 1429  The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
... ... @@ -1482,7 +1482,7 @@
1482 1482  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1483 1483  
1484 1484  
1485 -1.
1522 +1.
1486 1486  11. How to set up LT to work with Single Channel Gateway such as LG01/LG02?
1487 1487  
1488 1488  In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
... ... @@ -1541,7 +1541,7 @@
1541 1541  [[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#How_it_work]]
1542 1542  
1543 1543  
1544 -1.
1581 +1.
1545 1545  11. Have trouble to upload image.
1546 1546  
1547 1547  See this link for trouble shooting:
... ... @@ -1549,7 +1549,7 @@
1549 1549  [[http:~~/~~/wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting>>url:http://wiki.dragino.com/index.php?title=Firmware_Upgrade_Trouble_Shooting#UART_upgrade_trouble_shooting]]
1550 1550  
1551 1551  
1552 -1.
1589 +1.
1553 1553  11. Why I can’t join TTN in US915 /AU915 bands?
1554 1554  
1555 1555  It might be about the channels mapping. Please see this link for detail:
1653357170703-587.png
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