Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 49.1 >
edited by Xiaoling
on 2022/06/02 17:32
To version < 43.1 >
edited by Xiaoling
on 2022/06/02 16:53
>
Change comment: Uploaded new attachment "image-20220602165351-6.png", version {1}

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... ... @@ -585,6 +585,7 @@
585 585  **AT+PAYVER: Set PAYVER field = 1**
586 586  )))
587 587  
588 +
588 588  * **Downlink Payload:**
589 589  
590 590  **0xAE 01**  ~-~-> Set PAYVER field =  0x01
... ... @@ -595,9 +595,9 @@
595 595  
596 596  ==== **Set RS485 Sampling Commands** ====
597 597  
598 -AT+COMMANDx or AT+DATACUTx
599 +AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
599 599  
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"]].
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"]].
601 601  
602 602  
603 603  * **AT Command:**
... ... @@ -612,7 +612,12 @@
612 612  **AT+DATACUTx: Configure how to handle return from RS485 devices.**
613 613  )))
614 614  
616 +(% class="box infomessage" %)
617 +(((
618 +**AT+SEARCHx: Configure search command**
619 +)))
615 615  
621 +
616 616  * **Downlink Payload:**
617 617  
618 618  **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
... ... @@ -627,7 +627,7 @@
627 627  * NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
628 628  * LL:  The length of AT+COMMAND or AT+DATACUT command
629 629  * XX XX XX XX: AT+COMMAND or AT+DATACUT 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.
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.
631 631  
632 632  **Example:**
633 633  
... ... @@ -638,7 +638,17 @@
638 638  (% 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**
639 639  
640 640  
647 +**0xAB** downlink command can be used for set AT+SEARCHx
641 641  
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 +
642 642  ==== **Fast command to handle MODBUS device** ====
643 643  
644 644  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]].
... ... @@ -645,32 +645,45 @@
645 645  
646 646  This command is valid since v1.3 firmware version
647 647  
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.
649 649  
665 +**AT+MBFUN has only two value:**
650 650  
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 +
651 651  **Example:**
652 652  
653 -* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
675 +* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0).
654 654  * 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.
655 655  * 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.
656 656  
657 -[[image:image-20220602165351-6.png]]
679 +[[image:1654133913295-597.png]]
658 658  
659 -[[image:image-20220602165351-7.png]]
660 660  
682 +[[image:1654133954153-643.png]]
661 661  
662 662  
685 +* **Downlink Commands:**
686 +
687 +**A9 aa** ~-~-> Same as AT+MBFUN=aa
688 +
689 +
690 +
663 663  ==== **RS485 command timeout** ====
664 664  
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.
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.
666 666  
667 -Default value: 0, range:  0 ~~ 65 seconds
695 +Default value: 0, range:  0 ~~ 5 seconds
668 668  
697 +
669 669  * **AT Command:**
670 670  
671 671  (% class="box infomessage" %)
672 672  (((
673 -**AT+CMDDLaa=hex(bb cc)*1000**
702 +**AT+CMDDLaa=hex(bb cc)**
674 674  )))
675 675  
676 676  **Example:**
... ... @@ -680,13 +680,13 @@
680 680  
681 681  * **Downlink Payload:**
682 682  
683 -**0x AA aa bb cc**
712 +0x AA aa bb cc
684 684  
685 -Same as: AT+CMDDLaa=hex(bb cc)*1000
714 +Same as: AT+CMDDLaa=hex(bb cc)
686 686  
687 687   **Example:**
688 688  
689 - 0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
718 + **0xAA 01 03 E8**  ~-~-> Same as **AT+CMDDL1=1000 ms**
690 690  
691 691  
692 692  
... ... @@ -721,34 +721,27 @@
721 721  
722 722  Ask device to send an uplink immediately.
723 723  
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 -
729 729  * **Downlink Payload:**
730 730  
731 -**0x08 FF**, RS485-LN will immediately send an uplink.
755 +**0x08 FF**, RS485-BL will immediately send an uplink.
732 732  
733 733  
734 -==== ====
735 735  
736 736  ==== **Clear RS485 Command** ====
737 737  
738 738  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
739 739  
763 +
740 740  * **AT Command:**
741 741  
742 -**AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
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
743 743  
744 -Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
745 -
746 746  Example screen shot after clear all RS485 commands. 
747 747  
748 748  
749 749  The uplink screen shot is:
750 750  
751 -[[image:1654160691922-496.png]][[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png]]
773 +[[image:1654134704555-320.png]]
752 752  
753 753  
754 754  * **Downlink Payload:**
... ... @@ -799,227 +799,22 @@
799 799  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
800 800  
801 801  
802 -== 3.6 Listening mode for RS485 network ==
803 803  
804 -This feature support since firmware v1.4
825 +==== **Control output power duration** ====
805 805  
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.
827 +User can set the output power duration before each sampling.
807 807  
808 -[[image:image-20220602171200-8.png||height="567" width="1007"]]
829 +* **AT Command:**
809 809  
810 -To enable the listening mode, use can run the command AT+RXMODE.
831 +**Example:**
811 811  
833 +**AT+3V3T=1000**  ~/~/ 3V3 output power will open 1s before each sampling.
812 812  
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)
835 +**AT+5VT=1000**  ~/~/ +5V output power will open 1s before each sampling.
819 819  
820 -**Downlink Command:**
821 821  
822 -**0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
838 +* **LoRaWAN Downlink Command:**
823 823  
840 +**07 01 aa bb**  Same as AT+5VT=(aa bb)
824 824  
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 -
842 +**07 02 aa bb**  Same as AT+3V3T=(aa bb)
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