Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 42.3 >
edited by Xiaoling
on 2022/06/02 16:47
To version < 47.3 >
edited by Xiaoling
on 2022/06/02 17:31
>
Change comment: There is no comment for this version

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... ... @@ -585,7 +585,6 @@
585 585  **AT+PAYVER: Set PAYVER field = 1**
586 586  )))
587 587  
588 -
589 589  * **Downlink Payload:**
590 590  
591 591  **0xAE 01**  ~-~-> Set PAYVER field =  0x01
... ... @@ -596,9 +596,9 @@
596 596  
597 597  ==== **Set RS485 Sampling Commands** ====
598 598  
599 -AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
598 +AT+COMMANDx or AT+DATACUTx
600 600  
601 -These three commands are used to configure how the RS485-BL polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
600 +These three commands are used to configure how the RS485-LN polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
602 602  
603 603  
604 604  * **AT Command:**
... ... @@ -613,12 +613,7 @@
613 613  **AT+DATACUTx: Configure how to handle return from RS485 devices.**
614 614  )))
615 615  
616 -(% class="box infomessage" %)
617 -(((
618 -**AT+SEARCHx: Configure search command**
619 -)))
620 620  
621 -
622 622  * **Downlink Payload:**
623 623  
624 624  **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
... ... @@ -633,7 +633,7 @@
633 633  * NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
634 634  * LL:  The length of AT+COMMAND or AT+DATACUT command
635 635  * XX XX XX XX: AT+COMMAND or AT+DATACUT command
636 -* YY:  If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-BL will execute an uplink after got this command.
630 +* YY:  If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
637 637  
638 638  **Example:**
639 639  
... ... @@ -644,17 +644,7 @@
644 644  (% style="color:#037691" %)**AF 03 02 06 **(% style="color:orange" %)**0B**(% style="color:red" %)** 02 **(% style="color:green" %)**05 07 08 0A **(% style="color:#037691" %)**00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**11**(%%),(% style="color:red" %)**2**(%%),(% style="color:green" %)**5~~7+8~~10**
645 645  
646 646  
647 -**0xAB** downlink command can be used for set AT+SEARCHx
648 648  
649 -**Example:** **AB aa 01 03 xx xx xx** (03 here means there are total 3 bytes after 03) So
650 -
651 -* AB aa 01 03 xx xx xx  same as AT+SEARCHaa=1,xx xx xx
652 -* AB aa 02 03 xx xx xx 02 yy yy(03 means there are 3 bytes after 03, they are xx xx xx;02 means there are 2 bytes after 02, they are yy yy) so the commands
653 -
654 -**AB aa 02 03 xx xx xx 02 yy yy**  same as **AT+SEARCHaa=2,xx xx xx+yy yy**
655 -
656 -
657 -
658 658  ==== **Fast command to handle MODBUS device** ====
659 659  
660 660  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]].
... ... @@ -661,45 +661,32 @@
661 661  
662 662  This command is valid since v1.3 firmware version
663 663  
648 +AT+MBFUN can auto read the Modbus function code: 01, 02, 03 or 04. AT+MBFUN has lower priority vs AT+DATACUT command. If AT+DATACUT command is configured, AT+MBFUN will be ignore.
664 664  
665 -**AT+MBFUN has only two value:**
666 666  
667 -* **AT+MBFUN=1**: Enable Modbus reading. And get response base on the MODBUS return
668 -
669 -AT+MBFUN=1, device can auto read the Modbus function code: 01, 02, 03 or 04. AT+MBFUN has lower priority vs AT+DATACUT command. If AT+DATACUT command is configured, AT+MBFUN will be ignore.
670 -
671 -* **AT+MBFUN=0**: Disable Modbus fast reading.
672 -
673 673  **Example:**
674 674  
675 -* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0).
653 +* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
676 676  * AT+COMMAND1= 01 03 00 10 00 08,1 ~-~-> read slave address 01 , function code 03, start address 00 01, quantity of registers 00 08.
677 677  * AT+COMMAND2= 01 02 00 40 00 10,1 ~-~-> read slave address 01 , function code 02, start address 00 40, quantity of inputs 00 10.
678 678  
679 -[[image:1654133913295-597.png]]
657 +[[image:image-20220602165351-6.png]]
680 680  
659 +[[image:image-20220602165351-7.png]]
681 681  
682 -[[image:1654133954153-643.png]]
683 683  
684 684  
685 -* **Downlink Commands:**
686 -
687 -**A9 aa** ~-~-> Same as AT+MBFUN=aa
688 -
689 -
690 -
691 691  ==== **RS485 command timeout** ====
692 692  
693 -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.
665 +Some Modbus device has slow action to send replies. This command is used to configure the RS485-LN to use longer time to wait for their action.
694 694  
695 -Default value: 0, range:  0 ~~ 5 seconds
667 +Default value: 0, range:  0 ~~ 65 seconds
696 696  
697 -
698 698  * **AT Command:**
699 699  
700 700  (% class="box infomessage" %)
701 701  (((
702 -**AT+CMDDLaa=hex(bb cc)**
673 +**AT+CMDDLaa=hex(bb cc)*1000**
703 703  )))
704 704  
705 705  **Example:**
... ... @@ -709,13 +709,13 @@
709 709  
710 710  * **Downlink Payload:**
711 711  
712 -0x AA aa bb cc
683 +**0x AA aa bb cc**
713 713  
714 -Same as: AT+CMDDLaa=hex(bb cc)
685 +Same as: AT+CMDDLaa=hex(bb cc)*1000
715 715  
716 716   **Example:**
717 717  
718 - **0xAA 01 03 E8**  ~-~-> Same as **AT+CMDDL1=1000 ms**
689 + 0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
719 719  
720 720  
721 721  
... ... @@ -750,27 +750,34 @@
750 750  
751 751  Ask device to send an uplink immediately.
752 752  
724 +* **AT Command:**
725 +
726 +No AT Command for this, user can press the [[ACT button>>path:#Button]] for 1 second for the same.
727 +
728 +
753 753  * **Downlink Payload:**
754 754  
755 -**0x08 FF**, RS485-BL will immediately send an uplink.
731 +**0x08 FF**, RS485-LN will immediately send an uplink.
756 756  
757 757  
734 +==== ====
758 758  
759 759  ==== **Clear RS485 Command** ====
760 760  
761 761  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
762 762  
763 -
764 764  * **AT Command:**
765 765  
766 -(% 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
742 +**AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
767 767  
744 +Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
745 +
768 768  Example screen shot after clear all RS485 commands. 
769 769  
770 770  
771 771  The uplink screen shot is:
772 772  
773 -[[image:1654134704555-320.png]]
751 +[[image:1654160691922-496.png]][[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png]]
774 774  
775 775  
776 776  * **Downlink Payload:**
... ... @@ -821,22 +821,227 @@
821 821  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
822 822  
823 823  
802 +== 3.6 Listening mode for RS485 network ==
824 824  
825 -==== **Control output power duration** ====
804 +This feature support since firmware v1.4
826 826  
827 -User can set the output power duration before each sampling.
806 +RS485-LN supports listening mode, it can listen the RS485 network packets and send them via LoRaWAN uplink. Below is the structure. The blue arrow shows the RS485 network packets to RS485-LN.
828 828  
829 -* **AT Command:**
808 +[[image:image-20220602171200-8.png||height="567" width="1007"]]
830 830  
831 -**Example:**
810 +To enable the listening mode, use can run the command AT+RXMODE.
832 832  
833 -**AT+3V3T=1000**  ~/~/ 3V3 output power will open 1s before each sampling.
834 834  
835 -**AT+5VT=1000**  ~/~/ +5V output power will open 1s before each sampling.
813 +(% border="1" style="background-color:#ffffcc; width:500px" %)
814 +|=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
815 +|(% style="width:161px" %)AT+RXMODE=1,10 |(% style="width:337px" %)Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
816 +|(% style="width:161px" %)AT+RXMODE=2,500|(% style="width:337px" %)Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
817 +|(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
818 +|(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 ~| cc)
836 836  
820 +**Downlink Command:**
837 837  
838 -* **LoRaWAN Downlink Command:**
822 +**0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
839 839  
840 -**07 01 aa bb**  Same as AT+5VT=(aa bb)
841 841  
842 -**07 02 aa bb**  Same as AT+3V3T=(aa bb)
825 +**Example**:
826 +
827 +The RS485-LN is set to AT+RXMODE=2,1000
828 +
829 +There is a two Modbus commands in the RS485 network as below:
830 +
831 +The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
832 +
833 +And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
834 +
835 +RS485-LN will capture both and send the uplink: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b  (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
836 +
837 +[[image:image-20220602171200-9.png]]
838 +
839 +
840 +(% style="color:red" %)Notice: Listening mode can work with the default polling mode of RS485-LN. When RS485-LN is in to send the RS485 commands (from AT+COMMANDx), the listening mode will be interrupt for a while.
841 +
842 +
843 +== 3.7 Buttons ==
844 +
845 +
846 +(% border="1" style="background-color:#f7faff; width:500px" %)
847 +|=**Button**|=(% style="width: 1420px;" %)**Feature**
848 +|**ACT**|(% style="width:1420px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
849 +|**RST**|(% style="width:1420px" %)Reboot RS485
850 +|**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>path:#upgrade_image]]
851 +
852 +== 3.8 LEDs ==
853 +
854 +(% border="1" style="background-color:#f7faff; width:500px" %)
855 +|=**LEDs**|=**Feature**
856 +|**PWR**|Always on if there is power
857 +|**SYS**|After device is powered on, the SYS will (% style="color:green" %)**fast blink in GREEN** (%%)for 5 times, means RS485-LN start to join LoRaWAN network. If join success, SYS will be (% style="color:green" %)**on GREEN for 5 seconds**(%%)**. **SYS will (% style="color:green" %)**blink Blue**(%%) on every upload and (% style="color:green" %)**blink Green**(%%) once receive a downlink message.
858 +
859 +
860 +
861 += 4. Case Study =
862 +
863 +User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN RS485-BL.WebHome]]
864 +
865 +
866 += 5. Use AT Command =
867 +
868 +== 5.1 Access AT Command ==
869 +
870 +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.
871 +
872 +[[image:1654135840598-282.png]]
873 +
874 +
875 +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:
876 +
877 +[[image:1654136105500-922.png]]
878 +
879 +
880 +More detail AT Command manual can be found at [[AT Command Manual>>||anchor="3.5ConfigureRS485-BLviaATorDownlink"]]
881 +
882 +
883 +== 5.2 Common AT Command Sequence ==
884 +
885 +=== 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
886 +
887 +If device has not joined network yet:
888 +
889 +(% class="box infomessage" %)
890 +(((
891 +**AT+FDR**
892 +)))
893 +
894 +(% class="box infomessage" %)
895 +(((
896 +**AT+NJM=0**
897 +)))
898 +
899 +(% class="box infomessage" %)
900 +(((
901 +**ATZ**
902 +)))
903 +
904 +
905 +If device already joined network:
906 +
907 +(% class="box infomessage" %)
908 +(((
909 +**AT+NJM=0**
910 +)))
911 +
912 +(% class="box infomessage" %)
913 +(((
914 +**ATZ**
915 +)))
916 +
917 +
918 +=== 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
919 +
920 +
921 +(% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
922 +
923 +(% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)Set to ABP mode
924 +
925 +(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)Set the Adaptive Data Rate Off
926 +
927 +(% style="background-color:#dcdcdc" %)**AT+DR=5**  (%%)Set Data Rate
928 +
929 +(% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
930 +
931 +(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) Set transmit frequency to 868.4Mhz
932 +
933 +(% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
934 +
935 +(% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
936 +
937 +(% style="background-color:#dcdcdc" %)**AT+DADDR=26** (%%) 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
938 +
939 +(% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
940 +
941 +
942 +(% style="color:red" %)**Note:**
943 +
944 +(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
945 +2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
946 +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.
947 +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
948 +
949 +[[image:1654136435598-589.png]]
950 +
951 +
952 += 6. FAQ =
953 +
954 +== 6.1 How to upgrade the image? ==
955 +
956 +The RS485-BL LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-BL to:
957 +
958 +* Support new features
959 +* For bug fix
960 +* Change LoRaWAN bands.
961 +
962 +Below shows the hardware connection for how to upload an image to RS485-BL:
963 +
964 +[[image:1654136646995-976.png]]
965 +
966 +**Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
967 +
968 +**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
969 +
970 +**Step3: **Open flashloader; choose the correct COM port to update.
971 +
972 +[[image:image-20220602102605-1.png]]
973 +
974 +
975 +[[image:image-20220602102637-2.png]]
976 +
977 +
978 +[[image:image-20220602102715-3.png]]
979 +
980 +
981 +
982 +== 6.2 How to change the LoRa Frequency Bands/Region? ==
983 +
984 +User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
985 +
986 +
987 +
988 +== 6.3 How many RS485-Slave can RS485-BL connects? ==
989 +
990 +The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
991 +
992 +
993 +
994 += 7. Trouble Shooting =
995 +
996 +
997 +== 7.1 Downlink doesn’t work, how to solve it? ==
998 +
999 +Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1000 +
1001 +
1002 +== 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
1003 +
1004 +It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1005 +
1006 +
1007 += 8. Order Info =
1008 +
1009 +(% style="color:blue" %)**Part Number: RS485-BL-XXX**
1010 +
1011 +(% style="color:blue" %)**XXX:**
1012 +
1013 +* (% style="color:blue" %)**EU433**(%%): frequency bands EU433
1014 +* (% style="color:blue" %)**EU868**(%%): frequency bands EU868
1015 +* (% style="color:blue" %)**KR920**(%%): frequency bands KR920
1016 +* (% style="color:blue" %)**CN470**(%%): frequency bands CN470
1017 +* (% style="color:blue" %)**AS923**(%%): frequency bands AS923
1018 +* (% style="color:blue" %)**AU915**(%%): frequency bands AU915
1019 +* (% style="color:blue" %)**US915**(%%): frequency bands US915
1020 +* (% style="color:blue" %)**IN865**(%%): frequency bands IN865
1021 +* (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1022 +* (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1023 +
1024 +(% class="wikigeneratedid" %)
1025 +
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