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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 57.3
edited by Xiaoling
on 2022/05/24 10:19
Change comment: There is no comment for this version
To version 44.1
edited by Xiaoling
on 2022/05/24 09:49
Change comment: Uploaded new attachment "1653356991268-289.png", version {1}

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Details

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... ... @@ -1043,6 +1043,8 @@
1043 1043  
1044 1044  [[image:image-20220524094641-12.png||height="402" width="718"]]
1045 1045  
1046 +
1047 +
1046 1046  **Step **3: Create an account or log in Mydevices.
1047 1047  
1048 1048  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
... ... @@ -1049,48 +1049,47 @@
1049 1049  
1050 1050  Search under The things network
1051 1051  
1052 -[[image:1653356838789-523.png||height="337" width="740"]]
1054 +[[image:1653356838789-523.png]]
1053 1053  
1056 +
1054 1054  After added, the sensor data arrive TTN, it will also arrive and show in Mydevices.
1055 1055  
1059 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image014.png]]
1056 1056  
1057 -[[image:image-20220524094909-1.png||height="335" width="729"]]
1058 1058  
1059 -[[image:image-20220524094909-2.png||height="337" width="729"]]
1062 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image015.png]]
1060 1060  
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" %)
1065 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image016.png]]
1064 1064  
1065 -[[image:image-20220524094909-5.png||height="341" width="734"]]
1066 1066  
1068 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image017.png]]
1067 1067  
1068 1068  
1071 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.png]]
1069 1069  
1070 1070  
1071 -== 3.6 Interface Detail ==
1074 +1.
1075 +11. Interface Detail
1076 +111. Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active )
1072 1072  
1073 -=== 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
1074 -
1075 1075  Support NPN Type sensor
1076 1076  
1077 -[[image:1653356991268-289.png]]
1080 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image019.png]]
1078 1078  
1079 -=== 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1080 1080  
1081 -(((
1083 +
1084 +1.
1085 +11.
1086 +111. Digital Input Port: DI1/DI2 ( For LT-22222-L)
1087 +
1082 1082  The DI port of LT-22222-L can support NPN or PNP output sensor.
1083 -)))
1084 1084  
1085 -(((
1086 1086  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 -)))
1088 1088  
1089 -[[image:1653357170703-587.png]]
1092 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
1090 1090  
1091 -(((
1092 1092  When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1093 -)))
1094 1094  
1095 1095  
1096 1096  **Example1**: Connect to a Low active sensor.
... ... @@ -1100,11 +1100,11 @@
1100 1100  * Connect sensor’s output to DI1-
1101 1101  * Connect sensor’s VCC to DI1+.
1102 1102  
1103 -So when sensor active, the current between NEC2501 pin1 and pin2 is： ​​
1104 +So when sensor active, the current between NEC2501 pin1 and pin2 is:
1104 1104  
1105 - //IF// = DI1+ / 1K.
1106 + //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]] = DI1+ / 1K.
1106 1106  
1107 -If DI1+ = 12v, the //IF// = 12mA , So the LT-22222-L will be able to detect this active signal.
1108 +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.
1108 1108  
1109 1109  
1110 1110  **Example2**: Connect to a High active sensor.
... ... @@ -1116,12 +1116,12 @@
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:/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 + //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.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:/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 +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.
1122 1122  
1123 1123  
1124 -**Example3**: Connect to a 220v high active sensor.
1125 +**Example3**: Connect to a 220v high active sensor.公司测试一下
1125 1125  
1126 1126  Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1127 1127  
... ... @@ -1130,24 +1130,34 @@
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:/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 + //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.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.
1136 +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.
1136 1136  
1137 -=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1138 1138  
1139 +1.
1140 +11.
1141 +111. Digital Output Port: DO1/DO2 /DO3
1142 +
1139 1139  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
1140 1140  
1141 -[[image:1653357531600-905.png]]
1145 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
1142 1142  
1143 -=== 3.6.4 Analog Input Interface ===
1144 1144  
1148 +
1149 +
1150 +1.
1151 +11.
1152 +111. Analog Input Interface
1153 +
1145 1145  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:
1146 1146  
1147 -**AC2 = (IN2 voltage )/12**
1156 +AC2 = (IN2 voltage )/12
1148 1148  
1149 -[[image:1653357592296-182.png]]
1158 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
1150 1150  
1160 +
1161 +
1151 1151  Example to connect a 4~~20mA sensor
1152 1152  
1153 1153  We take the wind speed sensor as an example for reference only.
... ... @@ -1163,226 +1163,177 @@
1163 1163  
1164 1164  Connection diagram:
1165 1165  
1166 -[[image:1653357640609-758.png]]
1177 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.jpg]]
1167 1167  
1168 -[[image:1653357648330-671.png||height="155" width="733"]]
1179 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
1169 1169  
1170 -=== 3.6.5 Relay Output ===
1171 1171  
1172 -(((
1182 +
1183 +1.
1184 +11.
1185 +111. Relay Output
1186 +
1173 1173  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 -)))
1175 1175  
1176 -[[image:image-20220524100215-9.png]]
1189 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1177 1177  
1178 -[[image:image-20220524100215-10.png||height="382" width="723"]]
1179 1179  
1180 -== 3.7 LEDs Indicators ==
1192 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1181 1181  
1182 -[[image:image-20220524100748-11.png]]
1183 1183  
1184 -= 4. Use AT Command =
1185 1185  
1186 -== 4.1 Access AT Command ==
1187 1187  
1197 +
1198 +1.
1199 +11. LEDs Indicators
1200 +
1201 +(% border="1" style="background-color:#f7faff" %)
1202 +|**LEDs**|**Feature**
1203 +|**PWR**|Always on if there is power
1204 +|**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.
1205 +|**TX**|(((
1206 +Device boot: TX blinks 5 times.
1207 +
1208 +Successful join network: TX ON for 5 seconds.
1209 +
1210 +Transmit a LoRa packet: TX blinks once
1211 +)))
1212 +|**RX**|RX blinks once when receive a packet.
1213 +|**DO1**|
1214 +|**DO2**|
1215 +|**DO3**|
1216 +|**DI2**|(((
1217 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1218 +
1219 +For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1220 +)))
1221 +|**DI2**|(((
1222 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1223 +
1224 +For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1225 +)))
1226 +|**DI3**|For LT-33222-L ONLY: ON when DI3 is low, LOW when DI3 is high
1227 +|**DI2**|(((
1228 +For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1229 +
1230 +For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1231 +)))
1232 +|**RO1**|
1233 +|**RO2**|
1234 +
1235 +1. Use AT Command
1236 +11. Access AT Command
1237 +
1188 1188  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.
1189 1189  
1190 -[[image:1653358238933-385.png]]
1240 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1191 1191  
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:
1193 1193  
1194 -[[image:1653358355238-883.png]]
1243 +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:
1195 1195  
1245 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1246 +
1247 +
1196 1196  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/]]
1197 1197  
1198 -(((
1199 1199  AT+<CMD>?        : Help on <CMD>
1200 -)))
1201 1201  
1202 -(((
1203 1203  AT+<CMD>         : Run <CMD>
1204 -)))
1205 1205  
1206 -(((
1207 1207  AT+<CMD>=<value> : Set the value
1208 -)))
1209 1209  
1210 -(((
1211 1211  AT+<CMD>=?       : Get the value
1212 -)))
1213 1213  
1214 -(((
1215 1215  ATZ: Trig a reset of the MCU
1216 -)))
1217 1217  
1218 -(((
1219 1219  AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1220 -)))
1221 1221  
1222 -(((
1223 1223  AT+DEUI: Get or Set the Device EUI
1224 -)))
1225 1225  
1226 -(((
1227 1227  AT+DADDR: Get or Set the Device Address
1228 -)))
1229 1229  
1230 -(((
1231 1231  AT+APPKEY: Get or Set the Application Key
1232 -)))
1233 1233  
1234 -(((
1235 1235  AT+NWKSKEY: Get or Set the Network Session Key
1236 -)))
1237 1237  
1238 -(((
1239 1239  AT+APPSKEY: Get or Set the Application Session Key
1240 -)))
1241 1241  
1242 -(((
1243 1243  AT+APPEUI: Get or Set the Application EUI
1244 -)))
1245 1245  
1246 -(((
1247 1247  AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1248 -)))
1249 1249  
1250 -(((
1251 1251  AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1252 -)))
1253 1253  
1254 -(((
1255 1255  AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1256 -)))
1257 1257  
1258 -(((
1259 1259  AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1260 -)))
1261 1261  
1262 -(((
1263 1263  AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1264 -)))
1265 1265  
1266 -(((
1267 1267  AT+RX2FQ: Get or Set the Rx2 window frequency
1268 -)))
1269 1269  
1270 -(((
1271 1271  AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1272 -)))
1273 1273  
1274 -(((
1275 1275  AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1276 -)))
1277 1277  
1278 -(((
1279 1279  AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1280 -)))
1281 1281  
1282 -(((
1283 1283  AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1284 -)))
1285 1285  
1286 -(((
1287 1287  AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1288 -)))
1289 1289  
1290 -(((
1291 1291  AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1292 -)))
1293 1293  
1294 -(((
1295 1295  AT+NWKID: Get or Set the Network ID
1296 -)))
1297 1297  
1298 -(((
1299 1299  AT+FCU: Get or Set the Frame Counter Uplink
1300 -)))
1301 1301  
1302 -(((
1303 1303  AT+FCD: Get or Set the Frame Counter Downlink
1304 -)))
1305 1305  
1306 -(((
1307 1307  AT+CLASS: Get or Set the Device Class
1308 -)))
1309 1309  
1310 -(((
1311 1311  AT+JOIN: Join network
1312 -)))
1313 1313  
1314 -(((
1315 1315  AT+NJS: Get OTAA Join Status
1316 -)))
1317 1317  
1318 -(((
1319 1319  AT+SENDB: Send hexadecimal data along with the application port
1320 -)))
1321 1321  
1322 -(((
1323 1323  AT+SEND: Send text data along with the application port
1324 -)))
1325 1325  
1326 -(((
1327 1327  AT+RECVB: Print last received data in binary format (with hexadecimal values)
1328 -)))
1329 1329  
1330 -(((
1331 1331  AT+RECV: Print last received data in raw format
1332 -)))
1333 1333  
1334 -(((
1335 1335  AT+VER: Get current image version and Frequency Band
1336 -)))
1337 1337  
1338 -(((
1339 1339  AT+CFM: Get or Set the confirmation mode (0-1)
1340 -)))
1341 1341  
1342 -(((
1343 1343  AT+CFS: Get confirmation status of the last AT+SEND (0-1)
1344 -)))
1345 1345  
1346 -(((
1347 1347  AT+SNR: Get the SNR of the last received packet
1348 -)))
1349 1349  
1350 -(((
1351 1351  AT+RSSI: Get the RSSI of the last received packet
1352 -)))
1353 1353  
1354 -(((
1355 1355  AT+TDC: Get or set the application data transmission interval in ms
1356 -)))
1357 1357  
1358 -(((
1359 1359  AT+PORT: Get or set the application port
1360 -)))
1361 1361  
1362 -(((
1363 1363  AT+DISAT: Disable AT commands
1364 -)))
1365 1365  
1366 -(((
1367 1367  AT+PWORD: Set password, max 9 digits
1368 -)))
1369 1369  
1370 -(((
1371 1371  AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1372 -)))
1373 1373  
1374 -(((
1375 1375  AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1376 -)))
1377 1377  
1378 -(((
1379 1379  AT+CFG: Print all settings
1380 -)))
1381 1381  
1382 -== 4.2 Common AT Command Sequence ==
1383 1383  
1384 -=== 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1385 1385  
1344 +1.
1345 +11. Common AT Command Sequence
1346 +111. Multi-channel ABP mode (Use with SX1301/LG308)
1347 +
1386 1386  If device has not joined network yet:
1387 1387  
1388 1388  123456
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