Last modified by Saxer Lin on 2025/04/15 17:24
<
From version < 45.1 >
edited by Xiaoling
on 2022/05/24 09:52
To version < 57.3 >
edited by Xiaoling
on 2022/05/24 10:19
>
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -1051,23 +1051,17 @@
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]]
1062 -
1063 -
1064 1064  [[image:image-20220524094909-3.png||height="338" width="727"]]
1065 1065  
1063 +[[image:image-20220524094909-4.png||height="339" width="728"]](% style="display:none" %)
1066 1066  
1067 -[[image:image-20220524094909-4.png||height="339" width="728"]]
1068 -
1069 -(% style="display:none" %) (%%)
1070 -
1071 1071  [[image:image-20220524094909-5.png||height="341" width="734"]]
1072 1072  
1073 1073  
... ... @@ -1074,7 +1074,6 @@
1074 1074  
1075 1075  
1076 1076  
1077 -
1078 1078  == 3.6 Interface Detail ==
1079 1079  
1080 1080  === 3.6.1 Digital Input Port: DI1/DI2 /DI3 ( For LT-33222-L, low active ) ===
... ... @@ -1083,19 +1083,21 @@
1083 1083  
1084 1084  [[image:1653356991268-289.png]]
1085 1085  
1079 +=== 3.6.2 Digital Input Port: DI1/DI2 ( For LT-22222-L) ===
1086 1086  
1087 -
1088 -1.
1089 -11.
1090 -111. Digital Input Port: DI1/DI2 ( For LT-22222-L)
1091 -
1081 +(((
1092 1092  The DI port of LT-22222-L can support NPN or PNP output sensor.
1083 +)))
1093 1093  
1085 +(((
1094 1094  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 +)))
1095 1095  
1096 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.png]]
1089 +[[image:1653357170703-587.png]]
1097 1097  
1091 +(((
1098 1098  When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1093 +)))
1099 1099  
1100 1100  
1101 1101  **Example1**: Connect to a Low active sensor.
... ... @@ -1105,11 +1105,11 @@
1105 1105  * Connect sensor’s output to DI1-
1106 1106  * Connect sensor’s VCC to DI1+.
1107 1107  
1108 -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： ​​
1109 1109  
1110 - //IF//[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]] = DI1+ / 1K.
1105 + //IF// = DI1+ / 1K.
1111 1111  
1112 -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.
1113 1113  
1114 1114  
1115 1115  **Example2**: Connect to a High active sensor.
... ... @@ -1121,12 +1121,12 @@
1121 1121  
1122 1122  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1123 1123  
1124 - //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.**
1125 1125  
1126 -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.
1127 1127  
1128 1128  
1129 -**Example3**: Connect to a 220v high active sensor.公司测试一下
1124 +**Example3**: Connect to a 220v high active sensor.
1130 1130  
1131 1131  Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1132 1132  
... ... @@ -1135,34 +1135,24 @@
1135 1135  
1136 1136  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1137 1137  
1138 - //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.**
1139 1139  
1140 -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.
1141 1141  
1137 +=== 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
1142 1142  
1143 -1.
1144 -11.
1145 -111. Digital Output Port: DO1/DO2 /DO3
1146 -
1147 1147  NPN output: GND or Float. Max voltage can apply to output pin is 36v.
1148 1148  
1149 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
1141 +[[image:1653357531600-905.png]]
1150 1150  
1143 +=== 3.6.4 Analog Input Interface ===
1151 1151  
1152 -
1153 -
1154 -1.
1155 -11.
1156 -111. Analog Input Interface
1157 -
1158 1158  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:
1159 1159  
1160 -AC2 = (IN2 voltage )/12
1147 +**AC2 = (IN2 voltage )/12**
1161 1161  
1162 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
1149 +[[image:1653357592296-182.png]]
1163 1163  
1164 -
1165 -
1166 1166  Example to connect a 4~~20mA sensor
1167 1167  
1168 1168  We take the wind speed sensor as an example for reference only.
... ... @@ -1178,177 +1178,226 @@
1178 1178  
1179 1179  Connection diagram:
1180 1180  
1181 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.jpg]]
1166 +[[image:1653357640609-758.png]]
1182 1182  
1183 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
1168 +[[image:1653357648330-671.png||height="155" width="733"]]
1184 1184  
1170 +=== 3.6.5 Relay Output ===
1185 1185  
1186 -
1187 -1.
1188 -11.
1189 -111. Relay Output
1190 -
1172 +(((
1191 1191  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 +)))
1192 1192  
1193 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1176 +[[image:image-20220524100215-9.png]]
1194 1194  
1178 +[[image:image-20220524100215-10.png||height="382" width="723"]]
1195 1195  
1196 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1180 +== 3.7 LEDs Indicators ==
1197 1197  
1182 +[[image:image-20220524100748-11.png]]
1198 1198  
1184 += 4. Use AT Command =
1199 1199  
1186 +== 4.1 Access AT Command ==
1200 1200  
1201 -
1202 -1.
1203 -11. LEDs Indicators
1204 -
1205 -(% border="1" style="background-color:#f7faff" %)
1206 -|**LEDs**|**Feature**
1207 -|**PWR**|Always on if there is power
1208 -|**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.
1209 -|**TX**|(((
1210 -Device boot: TX blinks 5 times.
1211 -
1212 -Successful join network: TX ON for 5 seconds.
1213 -
1214 -Transmit a LoRa packet: TX blinks once
1215 -)))
1216 -|**RX**|RX blinks once when receive a packet.
1217 -|**DO1**|
1218 -|**DO2**|
1219 -|**DO3**|
1220 -|**DI2**|(((
1221 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1222 -
1223 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1224 -)))
1225 -|**DI2**|(((
1226 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1227 -
1228 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1229 -)))
1230 -|**DI3**|For LT-33222-L ONLY: ON when DI3 is low, LOW when DI3 is high
1231 -|**DI2**|(((
1232 -For LT-22222-L: ON when DI2 is high, LOW when DI2 is low
1233 -
1234 -For LT-33222-L: ON when DI2 is low, LOW when DI2 is high
1235 -)))
1236 -|**RO1**|
1237 -|**RO2**|
1238 -
1239 -1. Use AT Command
1240 -11. Access AT Command
1241 -
1242 1242  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.
1243 1243  
1244 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1190 +[[image:1653358238933-385.png]]
1245 1245  
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:
1246 1246  
1247 -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]]
1248 1248  
1249 -[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
1250 -
1251 -
1252 1252  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/]]
1253 1253  
1198 +(((
1254 1254  AT+<CMD>?        : Help on <CMD>
1200 +)))
1255 1255  
1202 +(((
1256 1256  AT+<CMD>         : Run <CMD>
1204 +)))
1257 1257  
1206 +(((
1258 1258  AT+<CMD>=<value> : Set the value
1208 +)))
1259 1259  
1210 +(((
1260 1260  AT+<CMD>=?       : Get the value
1212 +)))
1261 1261  
1214 +(((
1262 1262  ATZ: Trig a reset of the MCU
1216 +)))
1263 1263  
1218 +(((
1264 1264  AT+FDR: Reset Parameters to Factory Default, Keys Reserve 
1220 +)))
1265 1265  
1222 +(((
1266 1266  AT+DEUI: Get or Set the Device EUI
1224 +)))
1267 1267  
1226 +(((
1268 1268  AT+DADDR: Get or Set the Device Address
1228 +)))
1269 1269  
1230 +(((
1270 1270  AT+APPKEY: Get or Set the Application Key
1232 +)))
1271 1271  
1234 +(((
1272 1272  AT+NWKSKEY: Get or Set the Network Session Key
1236 +)))
1273 1273  
1238 +(((
1274 1274  AT+APPSKEY: Get or Set the Application Session Key
1240 +)))
1275 1275  
1242 +(((
1276 1276  AT+APPEUI: Get or Set the Application EUI
1244 +)))
1277 1277  
1246 +(((
1278 1278  AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)
1248 +)))
1279 1279  
1250 +(((
1280 1280  AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)
1252 +)))
1281 1281  
1254 +(((
1282 1282  AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)  
1256 +)))
1283 1283  
1258 +(((
1284 1284  AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing
1260 +)))
1285 1285  
1262 +(((
1286 1286  AT+PNM: Get or Set the public network mode. (0: off, 1: on)
1264 +)))
1287 1287  
1266 +(((
1288 1288  AT+RX2FQ: Get or Set the Rx2 window frequency
1268 +)))
1289 1289  
1270 +(((
1290 1290  AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)
1272 +)))
1291 1291  
1274 +(((
1292 1292  AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms
1276 +)))
1293 1293  
1278 +(((
1294 1294  AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms
1280 +)))
1295 1295  
1282 +(((
1296 1296  AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms
1284 +)))
1297 1297  
1286 +(((
1298 1298  AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms
1288 +)))
1299 1299  
1290 +(((
1300 1300  AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)
1292 +)))
1301 1301  
1294 +(((
1302 1302  AT+NWKID: Get or Set the Network ID
1296 +)))
1303 1303  
1298 +(((
1304 1304  AT+FCU: Get or Set the Frame Counter Uplink
1300 +)))
1305 1305  
1302 +(((
1306 1306  AT+FCD: Get or Set the Frame Counter Downlink
1304 +)))
1307 1307  
1306 +(((
1308 1308  AT+CLASS: Get or Set the Device Class
1308 +)))
1309 1309  
1310 +(((
1310 1310  AT+JOIN: Join network
1312 +)))
1311 1311  
1314 +(((
1312 1312  AT+NJS: Get OTAA Join Status
1316 +)))
1313 1313  
1318 +(((
1314 1314  AT+SENDB: Send hexadecimal data along with the application port
1320 +)))
1315 1315  
1322 +(((
1316 1316  AT+SEND: Send text data along with the application port
1324 +)))
1317 1317  
1326 +(((
1318 1318  AT+RECVB: Print last received data in binary format (with hexadecimal values)
1328 +)))
1319 1319  
1330 +(((
1320 1320  AT+RECV: Print last received data in raw format
1332 +)))
1321 1321  
1334 +(((
1322 1322  AT+VER: Get current image version and Frequency Band
1336 +)))
1323 1323  
1338 +(((
1324 1324  AT+CFM: Get or Set the confirmation mode (0-1)
1340 +)))
1325 1325  
1342 +(((
1326 1326  AT+CFS: Get confirmation status of the last AT+SEND (0-1)
1344 +)))
1327 1327  
1346 +(((
1328 1328  AT+SNR: Get the SNR of the last received packet
1348 +)))
1329 1329  
1350 +(((
1330 1330  AT+RSSI: Get the RSSI of the last received packet
1352 +)))
1331 1331  
1354 +(((
1332 1332  AT+TDC: Get or set the application data transmission interval in ms
1356 +)))
1333 1333  
1358 +(((
1334 1334  AT+PORT: Get or set the application port
1360 +)))
1335 1335  
1362 +(((
1336 1336  AT+DISAT: Disable AT commands
1364 +)))
1337 1337  
1366 +(((
1338 1338  AT+PWORD: Set password, max 9 digits
1368 +)))
1339 1339  
1370 +(((
1340 1340  AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode
1372 +)))
1341 1341  
1374 +(((
1342 1342  AT+CHE: Get or Set eight channels mode, Only for US915, AU915, CN470
1376 +)))
1343 1343  
1378 +(((
1344 1344  AT+CFG: Print all settings
1380 +)))
1345 1345  
1382 +== 4.2 Common AT Command Sequence ==
1346 1346  
1384 +=== 4.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1347 1347  
1348 -1.
1349 -11. Common AT Command Sequence
1350 -111. Multi-channel ABP mode (Use with SX1301/LG308)
1351 -
1352 1352  If device has not joined network yet:
1353 1353  
1354 1354  123456
... ... @@ -1368,8 +1368,8 @@
1368 1368  
1369 1369  ATZ
1370 1370  
1371 -1.
1372 -11.
1405 +1.
1406 +11.
1373 1373  111. Single-channel ABP mode (Use with LG01/LG02)
1374 1374  
1375 1375  123456   Enter Password to have AT access.
... ... @@ -1409,7 +1409,7 @@
1409 1409  
1410 1410  
1411 1411  1.
1412 -11.
1446 +11.
1413 1413  111. Change to Class A
1414 1414  
1415 1415  If sensor JOINED
... ... @@ -1424,7 +1424,7 @@
1424 1424  
1425 1425  1. FAQ
1426 1426  
1427 -1.
1461 +1.
1428 1428  11. How to upgrade the image?
1429 1429  
1430 1430  The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
... ... @@ -1483,7 +1483,7 @@
1483 1483  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1484 1484  
1485 1485  
1486 -1.
1520 +1.
1487 1487  11. How to set up LT to work with Single Channel Gateway such as LG01/LG02?
1488 1488  
1489 1489  In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
... ... @@ -1542,7 +1542,7 @@
1542 1542  [[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]]
1543 1543  
1544 1544  
1545 -1.
1579 +1.
1546 1546  11. Have trouble to upload image.
1547 1547  
1548 1548  See this link for trouble shooting:
... ... @@ -1550,7 +1550,7 @@
1550 1550  [[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]]
1551 1551  
1552 1552  
1553 -1.
1587 +1.
1554 1554  11. Why I can’t join TTN in US915 /AU915 bands?
1555 1555  
1556 1556  It might be about the channels mapping. Please see this link for detail:
1653357531600-905.png
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