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Last modified by Xiaoling on 2025/04/23 15:57
From version 36.2
edited by Xiaoling
on 2022/06/02 10:21
Change comment: There is no comment for this version
To version 34.1
edited by Xiaoling
on 2022/06/02 10:10
Change comment: Uploaded new attachment "1654135840598-282.png", version {1}

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1164 1164  User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN RS485-BL.WebHome]]
1165 1165  
1166 1166  
1167 +
1167 1167  = 5. Use AT Command =
1168 1168  
1169 1169  == 5.1 Access AT Command ==
... ... @@ -1170,85 +1170,72 @@
1170 1170  
1171 1171  RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
1172 1172  
1173 -[[image:1654135840598-282.png]]
1174 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
1174 1174  
1175 1175  
1176 -In PC, User needs to set (% style="color:blue" %)**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 of RS485-BL. The default password is 123456. Below is the output for reference:
1177 +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 of RS485-BL. The default password is 123456. Below is the output for reference:
1177 1177  
1178 -[[image:1654136105500-922.png]]
1179 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
1179 1179  
1180 1180  
1181 -More detail AT Command manual can be found at [[AT Command Manual>>||anchor="3.5ConfigureRS485-BLviaATorDownlink"]]
1182 1182  
1183 +More detail AT Command manual can be found at [[AT Command Manual>>path:#AT_COMMAND]]
1183 1183  
1184 -== 5.2 Common AT Command Sequence ==
1185 1185  
1186 -=== 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1187 1187  
1187 +1.
1188 +11. Common AT Command Sequence
1189 +111. Multi-channel ABP mode (Use with SX1301/LG308)
1190 +
1188 1188  If device has not joined network yet:
1189 1189  
1190 -(% class="box infomessage" %)
1191 -(((
1192 -**AT+FDR**
1193 -)))
1193 +AT+FDR
1194 1194  
1195 -(% class="box infomessage" %)
1196 -(((
1197 -**AT+NJM=0**
1198 -)))
1195 +AT+NJM=0
1199 1199  
1200 -(% class="box infomessage" %)
1201 -(((
1202 -**ATZ**
1203 -)))
1197 +ATZ
1204 1204  
1205 1205  
1206 1206  If device already joined network:
1207 1207  
1208 -(% class="box infomessage" %)
1209 -(((
1210 -**AT+NJM=0**
1211 -)))
1202 +AT+NJM=0
1212 1212  
1213 -(% class="box infomessage" %)
1214 -(((
1215 -**ATZ**
1216 -)))
1204 +ATZ
1217 1217  
1206 +1.
1207 +11.
1208 +111. Single-channel ABP mode (Use with LG01/LG02)
1218 1218  
1219 -=== 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1210 +AT+FDR   Reset Parameters to Factory Default, Keys Reserve
1220 1220  
1212 +AT+NJM=0 Set to ABP mode
1221 1221  
1222 -(% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1214 +AT+ADR=0 Set the Adaptive Data Rate Off
1223 1223  
1224 -(% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)Set to ABP mode
1216 +AT+DR=5  Set Data Rate
1225 1225  
1226 -(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)Set the Adaptive Data Rate Off
1218 +AT+TDC=60000  Set transmit interval to 60 seconds
1227 1227  
1228 -(% style="background-color:#dcdcdc" %)**AT+DR=5**  (%%)Set Data Rate
1220 +AT+CHS=868400000 Set transmit frequency to 868.4Mhz
1229 1229  
1230 -(% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1222 +AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
1231 1231  
1232 -(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) Set transmit frequency to 868.4Mhz
1224 +AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
1233 1233  
1234 -(% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1226 +AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1235 1235  
1236 -(% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1228 +ATZ          Reset MCU
1237 1237  
1238 -(% style="background-color:#dcdcdc" %)**AT+DADDR=26** (%%) 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
1230 +**Note:**
1239 1239  
1240 -(% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1232 +1. Make sure the device is set to ABP mode in the IoT Server.
1233 +1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1234 +1. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1235 +1. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1241 1241  
1242 -(% style="color:red" %)**Note:**
1237 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
1243 1243  
1244 -(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1245 -2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1246 -3. Make sure SF / bandwidth setting in LG01/LG02 match the settings of AT+DR. refer [[this link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/&file=LoRaWAN%201.0.3%20Regional%20Parameters.xlsx]] to see what DR means.
1247 -4. The command AT+RX2FQ and AT+RX2DR is to let downlink work. to set the correct parameters, user can check the actually downlink parameters to be used. As below. Which shows the RX2FQ should use 868400000 and RX2DR should be 5
1248 1248  
1249 -[[image:1654136435598-589.png]]
1250 -
1251 -
1252 1252  1. FAQ
1253 1253  11. How to upgrade the image?
1254 1254  
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1291 1291  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]]
1292 1292  
1293 1293  
1294 -1.
1282 +1.
1295 1295  11. How to change the LoRa Frequency Bands/Region?
1296 1296  
1297 1297  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
... ... @@ -1298,7 +1298,7 @@
1298 1298  
1299 1299  
1300 1300  
1301 -1.
1289 +1.
1302 1302  11. How many RS485-Slave can RS485-BL connects?
1303 1303  
1304 1304  The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>path:#downlink_A8]].
... ... @@ -1315,7 +1315,7 @@
1315 1315  
1316 1316  
1317 1317  
1318 -1.
1306 +1.
1319 1319  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1320 1320  
1321 1321  It might about the channels mapping. Please see for detail.
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