Skip to Content
Last modified by Xiaoling on 2025/04/23 15:57
From version 41.28
edited by Xiaoling
on 2022/06/06 11:12
Change comment: There is no comment for this version
To version 41.22
edited by Xiaoling
on 2022/06/06 11:10
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -1348,7 +1348,6 @@
1348 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" %)
... ... @@ -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