Skip to Content
Last modified by Mengting Qiu on 2025/06/04 18:42
From version 57.1
edited by Xiaoling
on 2022/05/24 10:12
Change comment: Uploaded new attachment "1653358355238-883.png", version {1}
To version 44.1
edited by Xiaoling
on 2022/05/24 09:49
Change comment: Uploaded new attachment "1653356991268-289.png", version {1}

Summary

Details

Page properties
Content
... ... @@ -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: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: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: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.
... ... @@ -1163,30 +1163,67 @@
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  
1189 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1176 1176  
1177 -[[image:image-20220524100215-9.png]]
1178 1178  
1179 -[[image:image-20220524100215-10.png||height="382" width="723"]]
1192 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1180 1180  
1181 1181  
1182 -== 3.7 LEDs Indicators ==
1183 1183  
1184 -[[image:image-20220524100748-11.png]]
1185 1185  
1186 -= 4. Use AT Command =
1187 1187  
1188 -== 4.1 Access AT Command ==
1198 +1.
1199 +11. LEDs Indicators
1189 1189  
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 +
1190 1190  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.
1191 1191  
1192 1192  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
... ... @@ -1293,7 +1293,7 @@
1293 1293  
1294 1294  
1295 1295  
1296 -1.
1344 +1.
1297 1297  11. Common AT Command Sequence
1298 1298  111. Multi-channel ABP mode (Use with SX1301/LG308)
1299 1299  
... ... @@ -1316,8 +1316,8 @@
1316 1316  
1317 1317  ATZ
1318 1318  
1319 -1.
1320 -11.
1367 +1.
1368 +11.
1321 1321  111. Single-channel ABP mode (Use with LG01/LG02)
1322 1322  
1323 1323  123456   Enter Password to have AT access.
... ... @@ -1357,7 +1357,7 @@
1357 1357  
1358 1358  
1359 1359  1.
1360 -11.
1408 +11.
1361 1361  111. Change to Class A
1362 1362  
1363 1363  If sensor JOINED
... ... @@ -1372,7 +1372,7 @@
1372 1372  
1373 1373  1. FAQ
1374 1374  
1375 -1.
1423 +1.
1376 1376  11. How to upgrade the image?
1377 1377  
1378 1378  The LT LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to LT to:
... ... @@ -1431,7 +1431,7 @@
1431 1431  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
1432 1432  
1433 1433  
1434 -1.
1482 +1.
1435 1435  11. How to set up LT to work with Single Channel Gateway such as LG01/LG02?
1436 1436  
1437 1437  In this case, users need to set LT-33222-L to work in ABP mode & transmit in only one frequency.
... ... @@ -1490,7 +1490,7 @@
1490 1490  [[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]]
1491 1491  
1492 1492  
1493 -1.
1541 +1.
1494 1494  11. Have trouble to upload image.
1495 1495  
1496 1496  See this link for trouble shooting:
... ... @@ -1498,7 +1498,7 @@
1498 1498  [[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]]
1499 1499  
1500 1500  
1501 -1.
1549 +1.
1502 1502  11. Why I can’t join TTN in US915 /AU915 bands?
1503 1503  
1504 1504  It might be about the channels mapping. Please see this link for detail:
1653357170703-587.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -34.0 KB
Content
1653357531600-905.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -25.4 KB
Content
1653357592296-182.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -42.2 KB
Content
1653357640609-758.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -558.1 KB
Content
1653357648330-671.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -35.9 KB
Content
1653358238933-385.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -412.4 KB
Content
1653358355238-883.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -120.4 KB
Content
image-20220524095400-6.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -172 bytes
Content
image-20220524095438-7.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -158 bytes
Content
image-20220524095628-8.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -264 bytes
Content
image-20220524100215-10.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -21.5 KB
Content
image-20220524100215-9.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -72.1 KB
Content
image-20220524100748-11.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.Xiaoling
Size
... ... @@ -1,1 +1,0 @@
1 -39.5 KB
Content