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Last modified by Xiaoling on 2025/04/23 15:57
From version 41.29
edited by Xiaoling
on 2022/06/06 11:12
Change comment: There is no comment for this version
To version 41.17
edited by Xiaoling
on 2022/06/06 11:05
Change comment: There is no comment for this version

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... ... @@ -976,9 +976,7 @@
976 976  
977 977  (% style="color:#037691" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
978 978  
979 -(((
980 980  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 -)))
982 982  
983 983  
984 984  **Example 2:**
... ... @@ -1272,7 +1272,7 @@
1272 1272  
1273 1273  == 3.6 Buttons ==
1274 1274  
1275 -(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:233px" %)
1273 +(% border="1" style="background-color:#ffffcc; color:green; width:233px" %)
1276 1276  |=(% style="width: 89px;" %)**Button**|=(% style="width: 141px;" %)**Feature**
1277 1277  |(% style="width:89px" %)**RST**|(% style="width:141px" %)Reboot RS485-BL
1278 1278  
... ... @@ -1280,75 +1280,38 @@
1280 1280  
1281 1281  == 3.7 +3V3 Output ==
1282 1282  
1283 -(((
1284 1284  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
1285 -)))
1286 1286  
1287 -(((
1288 1288  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 -)))
1290 1290  
1291 -(((
1292 1292  The +3V3 output time can be controlled by AT Command.
1293 -)))
1294 1294  
1295 -(((
1296 -
1297 -)))
1298 1298  
1299 -(((
1300 1300  (% style="color:#037691" %)**AT+3V3T=1000**
1301 -)))
1302 1302  
1303 -(((
1304 -
1305 -)))
1306 1306  
1307 -(((
1308 1308  Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
1309 -)))
1310 1310  
1311 -(((
1312 1312  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1313 -)))
1314 1314  
1315 1315  
1316 1316  == 3.8 +5V Output ==
1317 1317  
1318 -(((
1319 1319  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
1320 -)))
1321 1321  
1322 -(((
1323 1323  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 -)))
1325 1325  
1326 -(((
1327 1327  The 5V output time can be controlled by AT Command.
1328 -)))
1329 1329  
1330 -(((
1331 -
1332 -)))
1333 1333  
1334 -(((
1335 1335  (% style="color:#037691" %)**AT+5VT=1000**
1336 -)))
1337 1337  
1338 -(((
1339 -
1340 -)))
1341 1341  
1342 -(((
1343 1343  Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
1344 -)))
1345 1345  
1346 -(((
1347 1347  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 -)))
1349 1349  
1350 1350  
1351 -
1352 1352  == 3.9 LEDs ==
1353 1353  
1354 1354  (% border="1" style="background-color:#ffffcc; color:green; width:332px" %)
... ... @@ -1355,8 +1355,6 @@
1355 1355  |=**LEDs**|=(% style="width: 274px;" %)**Feature**
1356 1356  |**LED1**|(% style="width:274px" %)Blink when device transmit a packet.
1357 1357  
1358 -
1359 -
1360 1360  == 3.10 Switch Jumper ==
1361 1361  
1362 1362  (% border="1" style="background-color:#ffffcc; color:green; width:515px" %)
... ... @@ -1372,13 +1372,9 @@
1372 1372  3.3v position: set to compatible with 3.3v I/O.,
1373 1373  )))
1374 1374  
1375 -(((
1376 1376  **+3.3V**: is always ON
1377 -)))
1378 1378  
1379 -(((
1380 1380  **+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1381 -)))
1382 1382  
1383 1383  
1384 1384  = 4. Case Study =
... ... @@ -1390,23 +1390,17 @@
1390 1390  
1391 1391  == 5.1 Access AT Command ==
1392 1392  
1393 -(((
1394 1394  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 -)))
1396 1396  
1397 1397  [[image:1654135840598-282.png]]
1398 1398  
1399 1399  
1400 -(((
1401 1401  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 -)))
1403 1403  
1404 1404  [[image:1654136105500-922.png]]
1405 1405  
1406 1406  
1407 -(((
1408 1408  More detail AT Command manual can be found at [[AT Command Manual>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
1409 -)))
1410 1410  
1411 1411  
1412 1412  == 5.2 Common AT Command Sequence ==
... ... @@ -1431,9 +1431,7 @@
1431 1431  )))
1432 1432  
1433 1433  
1434 -(((
1435 1435  If device already joined network:
1436 -)))
1437 1437  
1438 1438  (% class="box infomessage" %)
1439 1439  (((
... ... @@ -1472,12 +1472,10 @@
1472 1472  
1473 1473  (% style="color:red" %)**Note:**
1474 1474  
1475 -(((
1476 1476  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1477 1477  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1478 1478  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.
1479 1479  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 -)))
1481 1481  
1482 1482  [[image:1654136435598-589.png]]
1483 1483  
... ... @@ -1486,23 +1486,13 @@
1486 1486  
1487 1487  == 6.1 How to upgrade the image? ==
1488 1488  
1489 -(((
1490 1490  The RS485-BL LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-BL to:
1491 -)))
1492 1492  
1493 -* (((
1494 -Support new features
1495 -)))
1496 -* (((
1497 -For bug fix
1498 -)))
1499 -* (((
1500 -Change LoRaWAN bands.
1501 -)))
1436 +* Support new features
1437 +* For bug fix
1438 +* Change LoRaWAN bands.
1502 1502  
1503 -(((
1504 1504  Below shows the hardware connection for how to upload an image to RS485-BL:
1505 -)))
1506 1506  
1507 1507  [[image:1654136646995-976.png]]
1508 1508