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Last modified by Xiaoling on 2025/04/23 15:57
From version 41.23
edited by Xiaoling
on 2022/06/06 11:10
Change comment: There is no comment for this version
To version 41.33
edited by Xiaoling
on 2022/06/06 11:18
Change comment: There is no comment for this version

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872 872  )))
873 873  
874 874  (((
875 -**}**
875 +{{{}}}}
876 876  
877 877  
878 878  )))
... ... @@ -939,53 +939,101 @@
939 939  
940 940  ==== **RS485 Debug Command (AT+CFGDEV)** ====
941 941  
942 +(((
942 942  This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
944 +)))
943 943  
944 -* **AT Command**
946 +* (((
947 +**AT Command**
948 +)))
945 945  
946 946  (% class="box infomessage" %)
947 947  (((
952 +(((
948 948  **AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
949 949  )))
955 +)))
950 950  
957 +(((
951 951  m: 0: no CRC; 1: add CRC-16/MODBUS in the end of this command.
959 +)))
952 952  
961 +(((
962 +
963 +)))
953 953  
954 -* **Downlink Payload**
965 +* (((
966 +**Downlink Payload**
967 +)))
955 955  
969 +(((
956 956  Format: A8 MM NN XX XX XX XX YY
971 +)))
957 957  
973 +(((
958 958  Where:
975 +)))
959 959  
960 -* MM: 1: add CRC-16/MODBUS ; 0: no CRC
961 -* NN: The length of RS485 command
962 -* XX XX XX XX: RS485 command total NN bytes
963 -* YY: How many bytes will be uplink from the return of this RS485 command, if YY=0, RS485-BL will execute the downlink command without uplink; if YY>0, RS485-BL will uplink total YY bytes from the output of this RS485 command
977 +* (((
978 +MM: 1: add CRC-16/MODBUS ; 0: no CRC
979 +)))
980 +* (((
981 +NN: The length of RS485 command
982 +)))
983 +* (((
984 +XX XX XX XX: RS485 command total NN bytes
985 +)))
986 +* (((
987 +YY: How many bytes will be uplink from the return of this RS485 command, if YY=0, RS485-BL will execute the downlink command without uplink; if YY>0, RS485-BL will uplink total YY bytes from the output of this RS485 command
988 +)))
964 964  
990 +(((
965 965  **Example 1:**
992 +)))
966 966  
994 +(((
967 967  To connect a Modbus Alarm with below commands.
996 +)))
968 968  
969 -* The command to active alarm is: 0A 05 00 04 00 01 **4C B0**. Where 0A 05 00 04 00 01 is the Modbus command to read the register 00 40 where stored the DI status. The 4C B0 is the CRC-16/MODBUS which calculate manually.
998 +* (((
999 +The command to active alarm is: 0A 05 00 04 00 01 **4C B0**. Where 0A 05 00 04 00 01 is the Modbus command to read the register 00 40 where stored the DI status. The 4C B0 is the CRC-16/MODBUS which calculate manually.
1000 +)))
970 970  
971 -* The command to deactivate alarm is: 0A 05 00 04 00 00 **8D 70**. Where 0A 05 00 04 00 00 is the Modbus command to read the register 00 40 where stored the DI status. The 8D 70 is the CRC-16/MODBUS which calculate manually.
1002 +* (((
1003 +The command to deactivate alarm is: 0A 05 00 04 00 00 **8D 70**. Where 0A 05 00 04 00 00 is the Modbus command to read the register 00 40 where stored the DI status. The 8D 70 is the CRC-16/MODBUS which calculate manually.
1004 +)))
972 972  
1006 +(((
973 973  So if user want to use downlink command to control to RS485 Alarm, he can use:
1008 +)))
974 974  
1010 +(((
975 975  (% style="color:#037691" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
1012 +)))
976 976  
1014 +(((
977 977  (% style="color:#037691" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
1016 +)))
978 978  
979 979  (((
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.
981 981  )))
982 982  
1022 +(((
1023 +
1024 +)))
983 983  
1026 +(((
984 984  **Example 2:**
1028 +)))
985 985  
1030 +(((
986 986  Check TTL Sensor return:
1032 +)))
987 987  
1034 +(((
988 988  [[image:1654132684752-193.png]]
1036 +)))
989 989  
990 990  
991 991  
... ... @@ -1372,9 +1372,13 @@
1372 1372  3.3v position: set to compatible with 3.3v I/O.,
1373 1373  )))
1374 1374  
1423 +(((
1375 1375  **+3.3V**: is always ON
1425 +)))
1376 1376  
1427 +(((
1377 1377  **+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1429 +)))
1378 1378  
1379 1379  
1380 1380  = 4. Case Study =
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1386 1386  
1387 1387  == 5.1 Access AT Command ==
1388 1388  
1441 +(((
1389 1389  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.
1443 +)))
1390 1390  
1391 1391  [[image:1654135840598-282.png]]
1392 1392  
1393 1393  
1448 +(((
1394 1394  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:
1450 +)))
1395 1395  
1396 1396  [[image:1654136105500-922.png]]
1397 1397  
1398 1398  
1455 +(((
1399 1399  More detail AT Command manual can be found at [[AT Command Manual>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
1457 +)))
1400 1400  
1401 1401  
1402 1402  == 5.2 Common AT Command Sequence ==
... ... @@ -1421,7 +1421,9 @@
1421 1421  )))
1422 1422  
1423 1423  
1482 +(((
1424 1424  If device already joined network:
1484 +)))
1425 1425  
1426 1426  (% class="box infomessage" %)
1427 1427  (((
... ... @@ -1460,10 +1460,12 @@
1460 1460  
1461 1461  (% style="color:red" %)**Note:**
1462 1462  
1523 +(((
1463 1463  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1464 1464  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1465 1465  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.
1466 1466  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
1528 +)))
1467 1467  
1468 1468  [[image:1654136435598-589.png]]
1469 1469  
... ... @@ -1472,13 +1472,23 @@
1472 1472  
1473 1473  == 6.1 How to upgrade the image? ==
1474 1474  
1537 +(((
1475 1475  The RS485-BL LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-BL to:
1539 +)))
1476 1476  
1477 -* Support new features
1478 -* For bug fix
1479 -* Change LoRaWAN bands.
1541 +* (((
1542 +Support new features
1543 +)))
1544 +* (((
1545 +For bug fix
1546 +)))
1547 +* (((
1548 +Change LoRaWAN bands.
1549 +)))
1480 1480  
1551 +(((
1481 1481  Below shows the hardware connection for how to upload an image to RS485-BL:
1553 +)))
1482 1482  
1483 1483  [[image:1654136646995-976.png]]
1484 1484  
... ... @@ -1544,6 +1544,8 @@
1544 1544  * (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1545 1545  * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1546 1546  
1619 +
1620 +
1547 1547  = 9. Packing Info =
1548 1548  
1549 1549  (((