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Last modified by Xiaoling on 2025/04/23 15:57
From version 40.52
edited by Xiaoling
on 2022/06/06 10:50
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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... ... @@ -382,6 +382,8 @@
382 382  )))
383 383  )))
384 384  
385 +
386 +
385 385  === 3.3.2 Configure sensors ===
386 386  
387 387  (((
... ... @@ -472,117 +472,213 @@
472 472  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
473 473  )))
474 474  
477 +(((
475 475  **Examples:**
479 +)))
476 476  
481 +(((
477 477  Below are examples for the how above AT Commands works.
483 +)))
478 478  
485 +(((
479 479  **AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
487 +)))
480 480  
481 481  (% border="1" class="table-bordered" style="background-color:#4f81bd; color:white; width:500px" %)
482 482  |(% style="width:498px" %)(((
491 +(((
483 483  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
493 +)))
484 484  
495 +(((
485 485  **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
497 +)))
486 486  
499 +(((
487 487  **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
488 488  )))
502 +)))
489 489  
504 +(((
490 490  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 +)))
491 491  
508 +(((
492 492  In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
510 +)))
493 493  
512 +(((
513 +
514 +)))
515 +
516 +(((
494 494  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
518 +)))
495 495  
496 496  (% border="1" class="table-bordered" style="background-color:#4f81bd; color:white; width:500px" %)
497 497  |(% style="width:577px" %)(((
522 +(((
498 498  **AT+SEARCHx=aa,xx xx xx xx xx**
524 +)))
499 499  
500 -* **aa: 1: prefix match mode; 2: prefix and suffix match mode**
501 -* **xx xx xx xx xx: match string. Max 5 bytes for prefix and 5 bytes for suffix**
526 +* (((
527 +**aa: 1: prefix match mode; 2: prefix and suffix match mode**
502 502  )))
529 +* (((
530 +**xx xx xx xx xx: match string. Max 5 bytes for prefix and 5 bytes for suffix**
531 +)))
532 +)))
503 503  
534 +(((
504 504  **Examples:**
536 +)))
505 505  
538 +(((
506 506  1）For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
540 +)))
507 507  
542 +(((
508 508  If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
544 +)))
509 509  
546 +(((
510 510  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 +)))
511 511  
550 +(((
512 512  [[image:1653271044481-711.png]]
552 +)))
513 513  
554 +(((
514 514  2）For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
556 +)))
515 515  
558 +(((
516 516  If we set AT+SEARCH1=2, 1E 56 34+31 00 49
560 +)))
517 517  
562 +(((
518 518  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 +)))
519 519  
566 +(((
520 520  [[image:1653271276735-972.png]]
568 +)))
521 521  
570 +(((
522 522  **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
572 +)))
523 523  
524 524  (% style="background-color:#4f81bd; color:white; width:510px" %)
525 525  |(% style="width:726px" %)(((
576 +(((
526 526  **AT+DATACUTx=a,b,c**
578 +)))
527 527  
528 -* **a: length for the return of AT+COMMAND**
529 -* **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
530 -* **c: define the position for valid value.  **
580 +* (((
581 +**a: length for the return of AT+COMMAND**
531 531  )))
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 +)))
532 532  
591 +(((
533 533  **Examples:**
593 +)))
534 534  
535 -* Grab bytes:
595 +* (((
596 +Grab bytes:
597 +)))
536 536  
599 +(((
537 537  [[image:1653271581490-837.png||height="313" width="722"]]
601 +)))
538 538  
603 +(((
604 +
605 +)))
539 539  
540 -* Grab a section.
607 +* (((
608 +Grab a section.
609 +)))
541 541  
611 +(((
542 542  [[image:1653271648378-342.png||height="326" width="720"]]
613 +)))
543 543  
615 +(((
616 +
617 +)))
544 544  
545 -* Grab different sections.
619 +* (((
620 +Grab different sections.
621 +)))
546 546  
623 +(((
547 547  [[image:1653271657255-576.png||height="305" width="730"]]
625 +)))
548 548  
549 549  (((
628 +(((
550 550  (% style="color:red" %)**Note:**
551 551  )))
631 +)))
552 552  
553 553  (((
634 +(((
554 554  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.
555 555  )))
637 +)))
556 556  
557 557  (((
640 +(((
558 558  **Example:**
559 559  )))
643 +)))
560 560  
561 561  (((
646 +(((
562 562  (% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
563 563  )))
649 +)))
564 564  
565 565  (((
652 +(((
566 566  (% style="color:red" %)AT+SEARCH1=1,1E 56 34
567 567  )))
655 +)))
568 568  
569 569  (((
658 +(((
570 570  (% style="color:red" %)AT+DATACUT1=0,2,1~~5
571 571  )))
661 +)))
572 572  
573 573  (((
664 +(((
574 574  (% style="color:red" %)Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
575 575  )))
667 +)))
576 576  
577 577  (((
670 +(((
578 578  (% style="color:red" %)String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
579 579  )))
673 +)))
580 580  
581 581  (((
676 +(((
582 582  (% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
583 583  )))
679 +)))
584 584  
681 +(((
585 585  [[image:1653271763403-806.png]]
683 +)))
586 586  
587 587  
588 588  === 3.3.4 Compose the uplink payload ===
... ... @@ -729,26 +729,8 @@
729 729  
730 730  == 3.4 Uplink Payload ==
731 731  
732 -(% border="1" style="background-color:#4f81bd; color:white; width:850px" %)
733 -|**Size(bytes)**|(% style="width:130px" %)**2**|(% style="width:93px" %)**1**|(% style="width:509px" %)**Length depends on the return from the commands**
734 -|Value|(% style="width:130px" %)(((
735 -(((
736 -Battery(mV)
737 -)))
830 +[[image:image-20220606105412-1.png]]
738 738  
739 -(((
740 -&
741 -)))
742 -
743 -(((
744 -Interrupt _Flag
745 -)))
746 -)))|(% style="width:93px" %)(((
747 -PAYLOAD_VER
748 -
749 -
750 -)))|(% 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.
751 -
752 752  Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
753 753  
754 754  (((
... ... @@ -806,14 +806,24 @@
806 806  
807 807  == 3.5 Configure RS485-BL via AT or Downlink ==
808 808  
889 +(((
809 809  User can configure RS485-BL via AT Commands or LoRaWAN Downlink Commands
891 +)))
810 810  
893 +(((
811 811  There are two kinds of Commands:
895 +)))
812 812  
813 -* (% 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 +)))
814 814  
815 -* (% 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 +)))
816 816  
905 +
906 +
817 817  === 3.5.1 Common Commands: ===
818 818  
819 819  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]]
... ... @@ -822,6 +822,7 @@
822 822  === 3.5.2 Sensor related commands: ===
823 823  
824 824  
915 +
825 825  ==== **Choose Device Type (RS485 or TTL)** ====
826 826  
827 827  RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
... ... @@ -845,6 +845,7 @@
845 845  
846 846  
847 847  
939 +
848 848  ==== **RS485 Debug Command (AT+CFGDEV)** ====
849 849  
850 850  This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
... ... @@ -884,7 +884,9 @@
884 884  
885 885  (% style="color:#037691" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
886 886  
979 +(((
887 887  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 +)))
888 888  
889 889  
890 890  **Example 2:**
... ... @@ -896,6 +896,7 @@
896 896  
897 897  
898 898  
993 +
899 899  ==== **Set Payload version** ====
900 900  
901 901  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.
... ... @@ -916,6 +916,7 @@
916 916  
917 917  
918 918  
1014 +
919 919  ==== **Set RS485 Sampling Commands** ====
920 920  
921 921  AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
... ... @@ -977,6 +977,7 @@
977 977  
978 978  
979 979  
1076 +
980 980  ==== **Fast command to handle MODBUS device** ====
981 981  
982 982  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]].
... ... @@ -1010,6 +1010,7 @@
1010 1010  
1011 1011  
1012 1012  
1110 +
1013 1013  ==== **RS485 command timeout** ====
1014 1014  
1015 1015  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.
... ... @@ -1041,6 +1041,7 @@
1041 1041  
1042 1042  
1043 1043  
1142 +
1044 1044  ==== **Uplink payload mode** ====
1045 1045  
1046 1046  Define to use one uplink or multiple uplinks for the sampling.
... ... @@ -1087,7 +1087,9 @@
1087 1087  
1088 1088  * **AT Command:**
1089 1089  
1189 +(((
1090 1090  (% 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 +)))
1091 1091  
1092 1092  Example screen shot after clear all RS485 commands. 
1093 1093  
... ... @@ -1103,6 +1103,7 @@
1103 1103  
1104 1104  
1105 1105  
1207 +
1106 1106  ==== **Set Serial Communication Parameters** ====
1107 1107  
1108 1108  Set the Rs485 serial communication parameters:
... ... @@ -1146,6 +1146,7 @@
1146 1146  
1147 1147  
1148 1148  
1251 +
1149 1149  ==== **Control output power duration** ====
1150 1150  
1151 1151  User can set the output power duration before each sampling.
... ... @@ -1169,44 +1169,83 @@
1169 1169  
1170 1170  == 3.6 Buttons ==
1171 1171  
1172 -(% border="1" style="background-color:#ffffcc; color:green; width:233px" %)
1275 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:233px" %)
1173 1173  |=(% style="width: 89px;" %)**Button**|=(% style="width: 141px;" %)**Feature**
1174 1174  |(% style="width:89px" %)**RST**|(% style="width:141px" %)Reboot RS485-BL
1175 1175  
1279 +
1280 +
1176 1176  == 3.7 +3V3 Output ==
1177 1177  
1283 +(((
1178 1178  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
1285 +)))
1179 1179  
1287 +(((
1180 1180  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 +)))
1181 1181  
1291 +(((
1182 1182  The +3V3 output time can be controlled by AT Command.
1293 +)))
1183 1183  
1295 +(((
1296 +
1297 +)))
1184 1184  
1299 +(((
1185 1185  (% style="color:#037691" %)**AT+3V3T=1000**
1301 +)))
1186 1186  
1303 +(((
1304 +
1305 +)))
1187 1187  
1307 +(((
1188 1188  Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
1309 +)))
1189 1189  
1311 +(((
1190 1190  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1313 +)))
1191 1191  
1192 1192  
1193 1193  == 3.8 +5V Output ==
1194 1194  
1318 +(((
1195 1195  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
1320 +)))
1196 1196  
1322 +(((
1197 1197  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 +)))
1198 1198  
1326 +(((
1199 1199  The 5V output time can be controlled by AT Command.
1328 +)))
1200 1200  
1330 +(((
1331 +
1332 +)))
1201 1201  
1334 +(((
1202 1202  (% style="color:#037691" %)**AT+5VT=1000**
1336 +)))
1203 1203  
1338 +(((
1339 +
1340 +)))
1204 1204  
1342 +(((
1205 1205  Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
1344 +)))
1206 1206  
1346 +(((
1207 1207  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 +)))
1208 1208  
1209 1209  
1351 +
1210 1210  == 3.9 LEDs ==
1211 1211  
1212 1212  (% border="1" style="background-color:#ffffcc; color:green; width:332px" %)
... ... @@ -1213,6 +1213,8 @@
1213 1213  |=**LEDs**|=(% style="width: 274px;" %)**Feature**
1214 1214  |**LED1**|(% style="width:274px" %)Blink when device transmit a packet.
1215 1215  
1358 +
1359 +
1216 1216  == 3.10 Switch Jumper ==
1217 1217  
1218 1218  (% border="1" style="background-color:#ffffcc; color:green; width:515px" %)
... ... @@ -1228,9 +1228,13 @@
1228 1228  3.3v position: set to compatible with 3.3v I/O.,
1229 1229  )))
1230 1230  
1375 +(((
1231 1231  **+3.3V**: is always ON
1377 +)))
1232 1232  
1379 +(((
1233 1233  **+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1381 +)))
1234 1234  
1235 1235  
1236 1236  = 4. Case Study =
... ... @@ -1242,17 +1242,23 @@
1242 1242  
1243 1243  == 5.1 Access AT Command ==
1244 1244  
1393 +(((
1245 1245  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 +)))
1246 1246  
1247 1247  [[image:1654135840598-282.png]]
1248 1248  
1249 1249  
1400 +(((
1250 1250  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 +)))
1251 1251  
1252 1252  [[image:1654136105500-922.png]]
1253 1253  
1254 1254  
1407 +(((
1255 1255  More detail AT Command manual can be found at [[AT Command Manual>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]]
1409 +)))
1256 1256  
1257 1257  
1258 1258  == 5.2 Common AT Command Sequence ==
... ... @@ -1277,7 +1277,9 @@
1277 1277  )))
1278 1278  
1279 1279  
1434 +(((
1280 1280  If device already joined network:
1436 +)))
1281 1281  
1282 1282  (% class="box infomessage" %)
1283 1283  (((
... ... @@ -1316,10 +1316,12 @@
1316 1316  
1317 1317  (% style="color:red" %)**Note:**
1318 1318  
1475 +(((
1319 1319  (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1320 1320  2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1321 1321  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.
1322 1322  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 +)))
1323 1323  
1324 1324  [[image:1654136435598-589.png]]
1325 1325  
image-20220606105412-1.png
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