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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 40.54
edited by Xiaoling
on 2022/06/06 10:51
Change comment: There is no comment for this version

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... ... @@ -501,186 +501,102 @@
501 501  )))
502 502  )))
503 503  
504 -(((
505 505  For example, if we have a RS485 sensor. The command to get sensor value is: 01 03 0B B8 00 02 46 0A. Where 01 03 0B B8 00 02 is the Modbus command to read the register 0B B8 where stored the sensor value. The 46 0A is the CRC-16/MODBUS which calculate manually.
506 -)))
507 507  
508 -(((
509 509  In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
510 -)))
511 511  
512 -(((
513 -
514 -)))
515 -
516 -(((
517 517  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
518 -)))
519 519  
520 520  (% border="1" class="table-bordered" style="background-color:#4f81bd; color:white; width:500px" %)
521 521  |(% style="width:577px" %)(((
522 -(((
523 523  **AT+SEARCHx=aa,xx xx xx xx xx**
524 -)))
525 525  
526 -* (((
527 -**aa: 1: prefix match mode; 2: prefix and suffix match mode**
514 +* **aa: 1: prefix match mode; 2: prefix and suffix match mode**
515 +* **xx xx xx xx xx: match string. Max 5 bytes for prefix and 5 bytes for suffix**
528 528  )))
529 -* (((
530 -**xx xx xx xx xx: match string. Max 5 bytes for prefix and 5 bytes for suffix**
531 -)))
532 -)))
533 533  
534 -(((
535 535  **Examples:**
536 -)))
537 537  
538 -(((
539 539  1）For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
540 -)))
541 541  
542 -(((
543 543  If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
544 -)))
545 545  
546 -(((
547 547  The valid data will be all bytes after 1E 56 34 , so it is (% style="background-color:yellow" %)**2e 30 58 5f 36 41 30 31 00 49**
548 -)))
549 549  
550 -(((
551 551  [[image:1653271044481-711.png]]
552 -)))
553 553  
554 -(((
555 555  2）For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
556 -)))
557 557  
558 -(((
559 559  If we set AT+SEARCH1=2, 1E 56 34+31 00 49
560 -)))
561 561  
562 -(((
563 563  Device will search the bytes between 1E 56 34 and 31 00 49. So it is(% style="background-color:yellow" %) **2e 30 58 5f 36 41 30**
564 -)))
565 565  
566 -(((
567 567  [[image:1653271276735-972.png]]
568 -)))
569 569  
570 -(((
571 571  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
572 -)))
573 573  
574 574  (% style="background-color:#4f81bd; color:white; width:510px" %)
575 575  |(% style="width:726px" %)(((
576 -(((
577 577  **AT+DATACUTx=a,b,c**
578 -)))
579 579  
580 -* (((
581 -**a: length for the return of AT+COMMAND**
542 +* **a: length for the return of AT+COMMAND**
543 +* **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
544 +* **c: define the position for valid value.  **
582 582  )))
583 -* (((
584 -**b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
585 -)))
586 -* (((
587 -**c: define the position for valid value.  **
588 -)))
589 -)))
590 590  
591 -(((
592 592  **Examples:**
593 -)))
594 594  
595 -* (((
596 -Grab bytes:
597 -)))
549 +* Grab bytes:
598 598  
599 -(((
600 600  [[image:1653271581490-837.png||height="313" width="722"]]
601 -)))
602 602  
603 -(((
604 -
605 -)))
606 606  
607 -* (((
608 -Grab a section.
609 -)))
554 +* Grab a section.
610 610  
611 -(((
612 612  [[image:1653271648378-342.png||height="326" width="720"]]
613 -)))
614 614  
615 -(((
616 -
617 -)))
618 618  
619 -* (((
620 -Grab different sections.
621 -)))
559 +* Grab different sections.
622 622  
623 -(((
624 624  [[image:1653271657255-576.png||height="305" width="730"]]
625 -)))
626 626  
627 627  (((
628 -(((
629 629  (% style="color:red" %)**Note:**
630 630  )))
631 -)))
632 632  
633 633  (((
634 -(((
635 635  AT+SEARCHx and AT+DATACUTx can be used together, if both commands are set, RS485-BL will first process AT+SEARCHx on the return string and get a temporary string, and then process AT+DATACUTx on this temporary string to get the final payload. In this case, AT+DATACUTx need to set to format AT+DATACUTx=0,xx,xx where the return bytes set to 0.
636 636  )))
637 -)))
638 638  
639 639  (((
640 -(((
641 641  **Example:**
642 642  )))
643 -)))
644 644  
645 645  (((
646 -(((
647 647  (% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
648 648  )))
649 -)))
650 650  
651 651  (((
652 -(((
653 653  (% style="color:red" %)AT+SEARCH1=1,1E 56 34
654 654  )))
655 -)))
656 656  
657 657  (((
658 -(((
659 659  (% style="color:red" %)AT+DATACUT1=0,2,1~~5
660 660  )))
661 -)))
662 662  
663 663  (((
664 -(((
665 665  (% style="color:red" %)Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
666 666  )))
667 -)))
668 668  
669 669  (((
670 -(((
671 671  (% style="color:red" %)String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
672 672  )))
673 -)))
674 674  
675 675  (((
676 -(((
677 677  (% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
678 678  )))
679 -)))
680 680  
681 -(((
682 682  [[image:1653271763403-806.png]]
683 -)))
684 684  
685 685  
686 686  === 3.3.4 Compose the uplink payload ===
... ... @@ -827,8 +827,26 @@
827 827  
828 828  == 3.4 Uplink Payload ==
829 829  
830 -[[image:image-20220606105412-1.png]]
746 +(% border="1" style="background-color:#4f81bd; color:white; width:850px" %)
747 +|**Size(bytes)**|(% style="width:130px" %)**2**|(% style="width:93px" %)**1**|(% style="width:509px" %)**Length depends on the return from the commands**
748 +|Value|(% style="width:130px" %)(((
749 +(((
750 +Battery(mV)
751 +)))
831 831  
753 +(((
754 +&
755 +)))
756 +
757 +(((
758 +Interrupt _Flag
759 +)))
760 +)))|(% style="width:93px" %)(((
761 +PAYLOAD_VER
762 +
763 +
764 +)))|(% style="width:509px" %)If the valid payload is too long and exceed the maximum support payload length in server, server will show payload not provided in the LoRaWAN server.
765 +
832 832  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
833 833  
834 834  (((
... ... @@ -886,24 +886,14 @@
886 886  
887 887  == 3.5 Configure RS485-BL via AT or Downlink ==
888 888  
889 -(((
890 890  User can configure RS485-BL via AT Commands or LoRaWAN Downlink Commands
891 -)))
892 892  
893 -(((
894 894  There are two kinds of Commands:
895 -)))
896 896  
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 -)))
827 +* (% 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]]
900 900  
901 -* (((
902 -(% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-BL.  User can see these commands below:
903 -)))
829 +* (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-BL.  User can see these commands below:
904 904  
905 -
906 -
907 907  === 3.5.1 Common Commands: ===
908 908  
909 909  They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
... ... @@ -912,7 +912,6 @@
912 912  === 3.5.2 Sensor related commands: ===
913 913  
914 914  
915 -
916 916  ==== **Choose Device Type (RS485 or TTL)** ====
917 917  
918 918  RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
... ... @@ -936,7 +936,6 @@
936 936  
937 937  
938 938  
939 -
940 940  ==== **RS485 Debug Command (AT+CFGDEV)** ====
941 941  
942 942  This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
... ... @@ -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:**
... ... @@ -990,7 +990,6 @@
990 990  
991 991  
992 992  
993 -
994 994  ==== **Set Payload version** ====
995 995  
996 996  This is the first byte of the uplink payload. RS485-BL can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
... ... @@ -1011,7 +1011,6 @@
1011 1011  
1012 1012  
1013 1013  
1014 -
1015 1015  ==== **Set RS485 Sampling Commands** ====
1016 1016  
1017 1017  AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
... ... @@ -1073,7 +1073,6 @@
1073 1073  
1074 1074  
1075 1075  
1076 -
1077 1077  ==== **Fast command to handle MODBUS device** ====
1078 1078  
1079 1079  AT+MBFUN is valid since v1.3 firmware version. The command is for fast configure to read Modbus devices. It is only valid for the devices which follow the [[MODBUS-RTU protocol>>url:https://www.modbustools.com/modbus.html]].
... ... @@ -1107,7 +1107,6 @@
1107 1107  
1108 1108  
1109 1109  
1110 -
1111 1111  ==== **RS485 command timeout** ====
1112 1112  
1113 1113  Some Modbus device has slow action to send replies. This command is used to configure the RS485-BL to use longer time to wait for their action.
... ... @@ -1139,7 +1139,6 @@
1139 1139  
1140 1140  
1141 1141  
1142 -
1143 1143  ==== **Uplink payload mode** ====
1144 1144  
1145 1145  Define to use one uplink or multiple uplinks for the sampling.
... ... @@ -1186,9 +1186,7 @@
1186 1186  
1187 1187  * **AT Command:**
1188 1188  
1189 -(((
1190 1190  (% style="color:#037691" %)**AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1191 -)))
1192 1192  
1193 1193  Example screen shot after clear all RS485 commands. 
1194 1194  
... ... @@ -1204,7 +1204,6 @@
1204 1204  
1205 1205  
1206 1206  
1207 -
1208 1208  ==== **Set Serial Communication Parameters** ====
1209 1209  
1210 1210  Set the Rs485 serial communication parameters:
... ... @@ -1248,7 +1248,6 @@
1248 1248  
1249 1249  
1250 1250  
1251 -
1252 1252  ==== **Control output power duration** ====
1253 1253  
1254 1254  User can set the output power duration before each sampling.
... ... @@ -1272,83 +1272,44 @@
1272 1272  
1273 1273  == 3.6 Buttons ==
1274 1274  
1275 -(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:233px" %)
1186 +(% 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  
1279 -
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 -)))
1347 +* Support new features
1348 +* For bug fix
1349 +* 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  
image-20220606105412-1.png
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