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Last modified by Xiaoling on 2025/04/23 15:57
From version 41.16
edited by Xiaoling
on 2022/06/06 11:03
Change comment: There is no comment for this version
To version 41.28
edited by Xiaoling
on 2022/06/06 11:12
Change comment: There is no comment for this version

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... ... @@ -886,13 +886,21 @@
886 886  
887 887  == 3.5 Configure RS485-BL via AT or Downlink ==
888 888  
889 +(((
889 889  User can configure RS485-BL via AT Commands or LoRaWAN Downlink Commands
891 +)))
890 890  
893 +(((
891 891  There are two kinds of Commands:
895 +)))
892 892  
893 -* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
897 +* (((
898 +(% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
899 +)))
894 894  
895 -* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-BL.  User can see these commands below:
901 +* (((
902 +(% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-BL.  User can see these commands below:
903 +)))
896 896  
897 897  
898 898  
... ... @@ -968,7 +968,9 @@
968 968  
969 969  (% style="color:#037691" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
970 970  
979 +(((
971 971  A8 is type code and 01 means add CRC-16/MODBUS at the end, the 3^^rd^^ byte is 06, means the next 6 bytes are the command to be sent to the RS485 network, the final byte 00 means this command don’t need to acquire output.
981 +)))
972 972  
973 973  
974 974  **Example 2:**
... ... @@ -1262,7 +1262,7 @@
1262 1262  
1263 1263  == 3.6 Buttons ==
1264 1264  
1265 -(% border="1" style="background-color:#ffffcc; color:green; width:233px" %)
1275 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:233px" %)
1266 1266  |=(% style="width: 89px;" %)**Button**|=(% style="width: 141px;" %)**Feature**
1267 1267  |(% style="width:89px" %)**RST**|(% style="width:141px" %)Reboot RS485-BL
1268 1268  
... ... @@ -1270,38 +1270,75 @@
1270 1270  
1271 1271  == 3.7 +3V3 Output ==
1272 1272  
1283 +(((
1273 1273  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
1285 +)))
1274 1274  
1287 +(((
1275 1275  The +3V3 output will be valid for every sampling. RS485-BL will enable +3V3 output before all sampling and disable the +3V3 after all sampling. 
1289 +)))
1276 1276  
1291 +(((
1277 1277  The +3V3 output time can be controlled by AT Command.
1293 +)))
1278 1278  
1295 +(((
1296 +
1297 +)))
1279 1279  
1299 +(((
1280 1280  (% style="color:#037691" %)**AT+3V3T=1000**
1301 +)))
1281 1281  
1303 +(((
1304 +
1305 +)))
1282 1282  
1307 +(((
1283 1283  Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
1309 +)))
1284 1284  
1311 +(((
1285 1285  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1313 +)))
1286 1286  
1287 1287  
1288 1288  == 3.8 +5V Output ==
1289 1289  
1318 +(((
1290 1290  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
1320 +)))
1291 1291  
1322 +(((
1292 1292  The +5V output will be valid for every sampling. RS485-BL will enable +5V output before all sampling and disable the +5v after all sampling. 
1324 +)))
1293 1293  
1326 +(((
1294 1294  The 5V output time can be controlled by AT Command.
1328 +)))
1295 1295  
1330 +(((
1331 +
1332 +)))
1296 1296  
1334 +(((
1297 1297  (% style="color:#037691" %)**AT+5VT=1000**
1336 +)))
1298 1298  
1338 +(((
1339 +
1340 +)))
1299 1299  
1342 +(((
1300 1300  Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
1344 +)))
1301 1301  
1346 +(((
1302 1302  By default, the AT+5VT=0. If the external sensor which require 5v and require more time to get stable state, user can use this command to increase the power ON duration for this sensor.
1348 +)))
1303 1303  
1304 1304  
1351 +
1305 1305  == 3.9 LEDs ==
1306 1306  
1307 1307  (% border="1" style="background-color:#ffffcc; color:green; width:332px" %)
... ... @@ -1308,6 +1308,8 @@
1308 1308  |=**LEDs**|=(% style="width: 274px;" %)**Feature**
1309 1309  |**LED1**|(% style="width:274px" %)Blink when device transmit a packet.
1310 1310  
1358 +
1359 +
1311 1311  == 3.10 Switch Jumper ==
1312 1312  
1313 1313  (% border="1" style="background-color:#ffffcc; color:green; width:515px" %)
... ... @@ -1323,9 +1323,13 @@
1323 1323  3.3v position: set to compatible with 3.3v I/O.,
1324 1324  )))
1325 1325  
1375 +(((
1326 1326  **+3.3V**: is always ON
1377 +)))
1327 1327  
1379 +(((
1328 1328  **+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1381 +)))
1329 1329  
1330 1330  
1331 1331  = 4. Case Study =
... ... @@ -1337,17 +1337,23 @@
1337 1337  
1338 1338  == 5.1 Access AT Command ==
1339 1339  
1393 +(((
1340 1340  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.
1395 +)))
1341 1341  
1342 1342  [[image:1654135840598-282.png]]
1343 1343  
1344 1344  
1400 +(((
1345 1345  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:
1402 +)))
1346 1346  
1347 1347  [[image:1654136105500-922.png]]
1348 1348  
1349 1349  
1407 +(((
1350 1350  More detail AT Command manual can be found at [[AT Command Manual>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
1409 +)))
1351 1351  
1352 1352  
1353 1353  == 5.2 Common AT Command Sequence ==
... ... @@ -1372,7 +1372,9 @@
1372 1372  )))
1373 1373  
1374 1374  
1434 +(((
1375 1375  If device already joined network:
1436 +)))
1376 1376  
1377 1377  (% class="box infomessage" %)
1378 1378  (((
... ... @@ -1411,10 +1411,12 @@
1411 1411  
1412 1412  (% style="color:red" %)**Note:**
1413 1413  
1475 +(((
1414 1414  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1415 1415  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1416 1416  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.
1417 1417  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
1480 +)))
1418 1418  
1419 1419  [[image:1654136435598-589.png]]
1420 1420