Last modified by Saxer Lin on 2025/04/15 17:24
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From version < 50.1 >
edited by Xiaoling
on 2022/05/24 09:59
To version < 57.2 >
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... ... @@ -1116,9 +1116,9 @@
1116 1116  
1117 1117  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1118 1118  
1119 -[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]]** [[image:image-20220524095628-8.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.**
1120 1120  
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:image-20220524095628-8.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.
1122 1122  
1123 1123  
1124 1124  **Example3**: Connect to a 220v high active sensor.
... ... @@ -1130,9 +1130,9 @@
1130 1130  
1131 1131  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1132 1132  
1133 - [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png]]**[[image:image-20220524095628-8.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.**
1134 1134  
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.
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.
1136 1136  
1137 1137  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1138 1138  
... ... @@ -1140,21 +1140,14 @@
1140 1140  
1141 1141  [[image:1653357531600-905.png]]
1142 1142  
1143 +=== 3.6.4 Analog Input Interface ===
1143 1143  
1144 -
1145 -
1146 -1.
1147 -11.
1148 -111. Analog Input Interface
1149 -
1150 1150  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:
1151 1151  
1152 -AC2 = (IN2 voltage )/12
1147 +**AC2 = (IN2 voltage )/12**
1153 1153  
1154 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
1149 +[[image:1653357592296-182.png]]
1155 1155  
1156 -
1157 -
1158 1158  Example to connect a 4~~20mA sensor
1159 1159  
1160 1160  We take the wind speed sensor as an example for reference only.
... ... @@ -1170,174 +1170,225 @@
1170 1170  
1171 1171  Connection diagram:
1172 1172  
1173 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.jpg]]
1166 +[[image:1653357640609-758.png]]
1174 1174  
1175 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
1168 +[[image:1653357648330-671.png||height="155" width="733"]]
1176 1176  
1170 +=== 3.6.5 Relay Output ===
1177 1177  
1178 -
1179 -1.
1180 -11.
1181 -111. Relay Output
1182 -
1172 +(((
1183 1183  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 +)))
1184 1184  
1185 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1176 +[[image:image-20220524100215-9.png]]
1186 1186  
1178 +[[image:image-20220524100215-10.png||height="382" width="723"]]
1187 1187  
1188 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1180 +== 3.7 LEDs Indicators ==
1189 1189  
1182 +[[image:image-20220524100748-11.png]]
1190 1190  
1184 += 4. Use AT Command =
1191 1191  
1186 +== 4.1 Access AT Command ==
1192 1192  
1193 -
1194 -1.
1195 -11. LEDs Indicators
1196 -
1197 -(% border="1" style="background-color:#f7faff" %)
1198 -|**LEDs**|**Feature**
1199 -|**PWR**|Always on if there is power
1200 -|**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.
1201 -|**TX**|(((
1202 -Device boot: TX blinks 5 times.
1203 -
1204 -Successful join network: TX ON for 5 seconds.
1205 -
1206 -Transmit a LoRa packet: TX blinks once
1207 -)))
1208 -|**RX**|RX blinks once when receive a packet.
1209 -|**DO1**|
1210 -|**DO2**|
1211 -|**DO3**|
1212 -|**DI2**|(((
1213 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1214 -
1215 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1216 -)))
1217 -|**DI2**|(((
1218 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1219 -
1220 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1221 -)))
1222 -|**DI3**|For LT-33222-L ONLY: ON when DI3 is low, LOW when DI3 is high
1223 -|**DI2**|(((
1224 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1225 -
1226 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1227 -)))
1228 -|**RO1**|
1229 -|**RO2**|
1230 -
1231 -1. Use AT Command
1232 -11. Access AT Command
1233 -
1234 1234  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.
1235 1235  
1236 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1190 +[[image:1653358238933-385.png]]
1237 1237  
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:
1238 1238  
1239 -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]]
1240 1240  
1241 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1242 -
1243 -
1244 1244  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/]]
1245 1245  
1198 +(((
1246 1246  AT+<CMD>?        : Help on <CMD>
1200 +)))
1247 1247  
1202 +(((
1248 1248  AT+<CMD>         : Run <CMD>
1204 +)))
1249 1249  
1206 +(((
1250 1250  AT+<CMD>=<value> : Set the value
1208 +)))
1251 1251  
1210 +(((
1252 1252  AT+<CMD>=?       : Get the value
1212 +)))
1253 1253  
1214 +(((
1254 1254  ATZ: Trig a reset of the MCU
1216 +)))
1255 1255  
1218 +(((
1256 1256  AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1220 +)))
1257 1257  
1222 +(((
1258 1258  AT+DEUI: Get or Set the Device EUI
1224 +)))
1259 1259  
1226 +(((
1260 1260  AT+DADDR: Get or Set the Device Address
1228 +)))
1261 1261  
1230 +(((
1262 1262  AT+APPKEY: Get or Set the Application Key
1232 +)))
1263 1263  
1234 +(((
1264 1264  AT+NWKSKEY: Get or Set the Network Session Key
1236 +)))
1265 1265  
1238 +(((
1266 1266  AT+APPSKEY: Get or Set the Application Session Key
1240 +)))
1267 1267  
1242 +(((
1268 1268  AT+APPEUI: Get or Set the Application EUI
1244 +)))
1269 1269  
1246 +(((
1270 1270  AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1248 +)))
1271 1271  
1250 +(((
1272 1272  AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1252 +)))
1273 1273  
1254 +(((
1274 1274  AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1256 +)))
1275 1275  
1258 +(((
1276 1276  AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1260 +)))
1277 1277  
1262 +(((
1278 1278  AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1264 +)))
1279 1279  
1266 +(((
1280 1280  AT+RX2FQ: Get or Set the Rx2 window frequency
1268 +)))
1281 1281  
1270 +(((
1282 1282  AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1272 +)))
1283 1283  
1274 +(((
1284 1284  AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1276 +)))
1285 1285  
1278 +(((
1286 1286  AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1280 +)))
1287 1287  
1282 +(((
1288 1288  AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1284 +)))
1289 1289  
1286 +(((
1290 1290  AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1288 +)))
1291 1291  
1290 +(((
1292 1292  AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1292 +)))
1293 1293  
1294 +(((
1294 1294  AT+NWKID: Get or Set the Network ID
1296 +)))
1295 1295  
1298 +(((
1296 1296  AT+FCU: Get or Set the Frame Counter Uplink
1300 +)))
1297 1297  
1302 +(((
1298 1298  AT+FCD: Get or Set the Frame Counter Downlink
1304 +)))
1299 1299  
1306 +(((
1300 1300  AT+CLASS: Get or Set the Device Class
1308 +)))
1301 1301  
1310 +(((
1302 1302  AT+JOIN: Join network
1312 +)))
1303 1303  
1314 +(((
1304 1304  AT+NJS: Get OTAA Join Status
1316 +)))
1305 1305  
1318 +(((
1306 1306  AT+SENDB: Send hexadecimal data along with the application port
1320 +)))
1307 1307  
1322 +(((
1308 1308  AT+SEND: Send text data along with the application port
1324 +)))
1309 1309  
1326 +(((
1310 1310  AT+RECVB: Print last received data in binary format (with hexadecimal values)
1328 +)))
1311 1311  
1330 +(((
1312 1312  AT+RECV: Print last received data in raw format
1332 +)))
1313 1313  
1334 +(((
1314 1314  AT+VER: Get current image version and Frequency Band
1336 +)))
1315 1315  
1338 +(((
1316 1316  AT+CFM: Get or Set the confirmation mode (0-1)
1340 +)))
1317 1317  
1342 +(((
1318 1318  AT+CFS: Get confirmation status of the last AT+SEND (0-1)
1344 +)))
1319 1319  
1346 +(((
1320 1320  AT+SNR: Get the SNR of the last received packet
1348 +)))
1321 1321  
1350 +(((
1322 1322  AT+RSSI: Get the RSSI of the last received packet
1352 +)))
1323 1323  
1354 +(((
1324 1324  AT+TDC: Get or set the application data transmission interval in ms
1356 +)))
1325 1325  
1358 +(((
1326 1326  AT+PORT: Get or set the application port
1360 +)))
1327 1327  
1362 +(((
1328 1328  AT+DISAT: Disable AT commands
1364 +)))
1329 1329  
1366 +(((
1330 1330  AT+PWORD: Set password, max 9 digits
1368 +)))
1331 1331  
1370 +(((
1332 1332  AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1372 +)))
1333 1333  
1374 +(((
1334 1334  AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1376 +)))
1335 1335  
1378 +(((
1336 1336  AT+CFG: Print all settings
1380 +)))
1337 1337  
1338 1338  
1339 1339  
1340 -1.
1384 +1.
1341 1341  11. Common AT Command Sequence
1342 1342  111. Multi-channel ABP mode (Use with SX1301/LG308)
1343 1343  
... ... @@ -1360,8 +1360,8 @@
1360 1360  
1361 1361  ATZ
1362 1362  
1363 -1.
1364 -11.
1407 +1.
1408 +11.
1365 1365  111. Single-channel ABP mode (Use with LG01/LG02)
1366 1366  
1367 1367  123456   Enter Password to have AT access.
... ... @@ -1401,7 +1401,7 @@
1401 1401  
1402 1402  
1403 1403  1.
1404 -11.
1448 +11.
1405 1405  111. Change to Class A
1406 1406  
1407 1407  If sensor JOINED
... ... @@ -1416,7 +1416,7 @@
1416 1416  
1417 1417  1. FAQ
1418 1418  
1419 -1.
1463 +1.
1420 1420  11. How to upgrade the image?
1421 1421  
1422 1422  The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
... ... @@ -1475,7 +1475,7 @@
1475 1475  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1476 1476  
1477 1477  
1478 -1.
1522 +1.
1479 1479  11. How to set up LT to work with Single Channel Gateway such as LG01/LG02?
1480 1480  
1481 1481  In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
... ... @@ -1534,7 +1534,7 @@
1534 1534  [[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]]
1535 1535  
1536 1536  
1537 -1.
1581 +1.
1538 1538  11. Have trouble to upload image.
1539 1539  
1540 1540  See this link for trouble shooting:
... ... @@ -1542,7 +1542,7 @@
1542 1542  [[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]]
1543 1543  
1544 1544  
1545 -1.
1589 +1.
1546 1546  11. Why I can’t join TTN in US915 /AU915 bands?
1547 1547  
1548 1548  It might be about the channels mapping. Please see this link for detail:
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