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<
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on 2022/06/06 09:58
To version < 43.1 >
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Summary

Details

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Content
... ... @@ -6,18 +6,12 @@
6 6  **RS485-LN – RS485 to LoRaWAN Converter User Manual**
7 7  
8 8  
9 -
10 -
11 11  **Table of Contents:**
12 12  
13 -{{toc/}}
14 14  
15 15  
16 16  
17 17  
18 -
19 -
20 -
21 21  = 1.Introduction =
22 22  
23 23  == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
... ... @@ -24,33 +24,23 @@
24 24  
25 25  (((
26 26  (((
27 -(((
28 28  The Dragino RS485-LN is a (% style="color:blue" %)**RS485 to LoRaWAN Converter**(%%). It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
29 29  )))
30 -)))
31 31  
32 32  (((
33 -(((
34 34  RS485-LN allows user to (% style="color:blue" %)**monitor / control RS485 devices**(%%) and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
35 35  )))
36 -)))
37 37  
38 38  (((
39 -(((
40 40  (% style="color:blue" %)**For data uplink**(%%), RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
41 41  )))
42 -)))
43 43  
44 44  (((
45 -(((
46 46  (% style="color:blue" %)**For data downlink**(%%), RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
47 -)))
48 48  
49 -(((
50 50  (% style="color:blue" %)**Demo Dashboard for RS485-LN**(%%) connect to two energy meters: [[https:~~/~~/app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a>>url:https://app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a]]
51 51  )))
52 52  )))
53 -)))
54 54  
55 55  [[image:1653267211009-519.png||height="419" width="724"]]
56 56  
... ... @@ -90,7 +90,7 @@
90 90  * Preamble detection.
91 91  * 127 dB Dynamic Range RSSI.
92 92  * Automatic RF Sense and CAD with ultra-fast AFC.
93 -* Packet engine up to 256 bytes with CRC
77 +* Packet engine up to 256 bytes with CRC.
94 94  
95 95  == 1.3 Features ==
96 96  
... ... @@ -175,7 +175,7 @@
175 175  [[image:1653268227651-549.png||height="592" width="720"]]
176 176  
177 177  (((
178 -The LG308 is already set to connect to [[TTN V3 network >>path:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:
162 +The LG308 is already set to connect to [[TTN V3 network >>path:eu1.cloud.thethings.network/]]. So what we need to now is only configure the TTN V3:
179 179  )))
180 180  
181 181  (((
... ... @@ -227,7 +227,7 @@
227 227  
228 228  (((
229 229  (((
230 -There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
214 +There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>path:#AT_COMMAND]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
231 231  )))
232 232  
233 233  (((
... ... @@ -432,7 +432,6 @@
432 432  
433 433  (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
434 434  
435 -
436 436  1. PAYVER: Defined by AT+PAYVER
437 437  1. PAYLOAD COUNT: Total how many uplinks of this sampling.
438 438  1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
... ... @@ -512,7 +512,7 @@
512 512  
513 513  There are two kinds of Commands:
514 514  
515 -* (% 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]]
498 +* (% 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: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
516 516  
517 517  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
518 518  
... ... @@ -532,8 +532,8 @@
532 532  
533 533  === 3.5.3 Sensor related commands ===
534 534  
518 +==== ====
535 535  
536 -
537 537  ==== **RS485 Debug Command** ====
538 538  
539 539  This command is used to configure the RS485 devices; they won’t be used during sampling.
... ... @@ -602,6 +602,7 @@
602 602  **AT+PAYVER: Set PAYVER field = 1**
603 603  )))
604 604  
588 +
605 605  * **Downlink Payload:**
606 606  
607 607  **0xAE 01**  ~-~-> Set PAYVER field =  0x01
... ... @@ -612,9 +612,9 @@
612 612  
613 613  ==== **Set RS485 Sampling Commands** ====
614 614  
615 -AT+COMMANDx or AT+DATACUTx
599 +AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
616 616  
617 -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"]].
618 618  
619 619  
620 620  * **AT Command:**
... ... @@ -629,7 +629,12 @@
629 629  **AT+DATACUTx: Configure how to handle return from RS485 devices.**
630 630  )))
631 631  
616 +(% class="box infomessage" %)
617 +(((
618 +**AT+SEARCHx: Configure search command**
619 +)))
632 632  
621 +
633 633  * **Downlink Payload:**
634 634  
635 635  **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
... ... @@ -644,7 +644,7 @@
644 644  * NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
645 645  * LL:  The length of AT+COMMAND or AT+DATACUT command
646 646  * XX XX XX XX: AT+COMMAND or AT+DATACUT command
647 -* 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.
648 648  
649 649  **Example:**
650 650  
... ... @@ -655,7 +655,17 @@
655 655  (% 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**
656 656  
657 657  
647 +**0xAB** downlink command can be used for set AT+SEARCHx
658 658  
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 +
659 659  ==== **Fast command to handle MODBUS device** ====
660 660  
661 661  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]].
... ... @@ -662,32 +662,45 @@
662 662  
663 663  This command is valid since v1.3 firmware version
664 664  
665 -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.
666 666  
665 +**AT+MBFUN has only two value:**
667 667  
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 +
668 668  **Example:**
669 669  
670 -* 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).
671 671  * 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.
672 672  * 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.
673 673  
674 -[[image:image-20220602165351-6.png]]
679 +[[image:1654133913295-597.png]]
675 675  
676 -[[image:image-20220602165351-7.png]]
677 677  
682 +[[image:1654133954153-643.png]]
678 678  
679 679  
685 +* **Downlink Commands:**
686 +
687 +**A9 aa** ~-~-> Same as AT+MBFUN=aa
688 +
689 +
690 +
680 680  ==== **RS485 command timeout** ====
681 681  
682 -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.
683 683  
684 -Default value: 0, range:  0 ~~ 65 seconds
695 +Default value: 0, range:  0 ~~ 5 seconds
685 685  
697 +
686 686  * **AT Command:**
687 687  
688 688  (% class="box infomessage" %)
689 689  (((
690 -**AT+CMDDLaa=hex(bb cc)*1000**
702 +**AT+CMDDLaa=hex(bb cc)**
691 691  )))
692 692  
693 693  **Example:**
... ... @@ -697,13 +697,13 @@
697 697  
698 698  * **Downlink Payload:**
699 699  
700 -**0x AA aa bb cc**
712 +0x AA aa bb cc
701 701  
702 -Same as: AT+CMDDLaa=hex(bb cc)*1000
714 +Same as: AT+CMDDLaa=hex(bb cc)
703 703  
704 704   **Example:**
705 705  
706 - 0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
718 + **0xAA 01 03 E8**  ~-~-> Same as **AT+CMDDL1=1000 ms**
707 707  
708 708  
709 709  
... ... @@ -738,14 +738,9 @@
738 738  
739 739  Ask device to send an uplink immediately.
740 740  
741 -* **AT Command:**
742 -
743 -No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
744 -
745 -
746 746  * **Downlink Payload:**
747 747  
748 -**0x08 FF**, RS485-LN will immediately send an uplink.
755 +**0x08 FF**, RS485-BL will immediately send an uplink.
749 749  
750 750  
751 751  
... ... @@ -753,18 +753,17 @@
753 753  
754 754  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
755 755  
763 +
756 756  * **AT Command:**
757 757  
758 -**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
759 759  
760 -Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
761 -
762 762  Example screen shot after clear all RS485 commands. 
763 763  
764 764  
765 765  The uplink screen shot is:
766 766  
767 -[[image:1654160691922-496.png]]
773 +[[image:1654134704555-320.png]]
768 768  
769 769  
770 770  * **Downlink Payload:**
... ... @@ -815,317 +815,22 @@
815 815  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
816 816  
817 817  
818 -== 3.6 Listening mode for RS485 network ==
819 819  
820 -This feature support since firmware v1.4
825 +==== **Control output power duration** ====
821 821  
822 -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.
823 823  
824 -[[image:image-20220602171200-8.png||height="567" width="1007"]]
829 +* **AT Command:**
825 825  
826 -To enable the listening mode, use can run the command AT+RXMODE.
831 +**Example:**
827 827  
833 +**AT+3V3T=1000**  ~/~/ 3V3 output power will open 1s before each sampling.
828 828  
829 -(% border="1" style="background-color:#ffffcc; width:500px" %)
830 -|=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
831 -|(% 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.
832 -|(% 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
833 -|(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
834 -|(% 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.
835 835  
836 -**Downlink Command:**
837 837  
838 -**0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
838 +* **LoRaWAN Downlink Command:**
839 839  
840 +**07 01 aa bb**  Same as AT+5VT=(aa bb)
840 840  
841 -**Example**:
842 -
843 -The RS485-LN is set to AT+RXMODE=2,1000
844 -
845 -There is a two Modbus commands in the RS485 network as below:
846 -
847 -The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
848 -
849 -And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
850 -
851 -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
852 -
853 -[[image:image-20220602171200-9.png]]
854 -
855 -
856 -(% 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.
857 -
858 -
859 -== 3.7 Buttons ==
860 -
861 -
862 -(% border="1" style="background-color:#f7faff; width:500px" %)
863 -|=**Button**|=(% style="width: 1420px;" %)**Feature**
864 -|**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**
865 -|**RST**|(% style="width:1420px" %)Reboot RS485
866 -|**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
867 -
868 -
869 -== 3.8 LEDs ==
870 -
871 -(% border="1" style="background-color:#f7faff; width:500px" %)
872 -|=**LEDs**|=**Feature**
873 -|**PWR**|Always on if there is power
874 -|**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.
875 -
876 -
877 -= 4. Case Study =
878 -
879 -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]]
880 -
881 -
882 -= 5. Use AT Command =
883 -
884 -== 5.1 Access AT Command ==
885 -
886 -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.
887 -
888 -[[image:1654162355560-817.png]]
889 -
890 -
891 -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:
892 -
893 -[[image:1654162368066-342.png]]
894 -
895 -
896 -More detail AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
897 -
898 -
899 -== 5.2 Common AT Command Sequence ==
900 -
901 -=== 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
902 -
903 -If device has not joined network yet:
904 -
905 -(% class="box infomessage" %)
906 -(((
907 -**AT+FDR**
908 -)))
909 -
910 -(% class="box infomessage" %)
911 -(((
912 -**AT+NJM=0**
913 -)))
914 -
915 -(% class="box infomessage" %)
916 -(((
917 -**ATZ**
918 -)))
919 -
920 -
921 -If device already joined network:
922 -
923 -(% class="box infomessage" %)
924 -(((
925 -**AT+NJM=0**
926 -)))
927 -
928 -(% class="box infomessage" %)
929 -(((
930 -**ATZ**
931 -)))
932 -
933 -
934 -=== 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
935 -
936 -
937 -(% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
938 -
939 -(% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)Set to ABP mode
940 -
941 -(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)Set the Adaptive Data Rate Off
942 -
943 -(% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%)Set Data Rate
944 -
945 -(% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
946 -
947 -(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) Set transmit frequency to 868.4Mhz
948 -
949 -(% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
950 -
951 -(% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
952 -
953 -(% 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.
954 -
955 -(% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
956 -
957 -
958 -(% style="color:red" %)**Note:**
959 -
960 -(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
961 -2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
962 -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.
963 -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
964 -
965 -[[image:1654162478620-421.png]]
966 -
967 -
968 -= 6. FAQ =
969 -
970 -== 6.1 How to upgrade the image? ==
971 -
972 -The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
973 -
974 -* Support new features
975 -* For bug fix
976 -* Change LoRaWAN bands.
977 -
978 -Below shows the hardware connection for how to upload an image to RS485-LN:
979 -
980 -[[image:1654162535040-878.png]]
981 -
982 -**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]].
983 -
984 -**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
985 -
986 -**Step3: **Open flashloader; choose the correct COM port to update.
987 -
988 -(((
989 -(% style="color:blue" %) Hold down the PRO button and then momentarily press the RST reset button and the SYS led will change from OFF to ON, While SYS LED is RED ON, it means the RS485-LN is ready to be program.
990 -)))
991 -
992 -
993 -[[image:image-20220602175818-12.png]]
994 -
995 -
996 -[[image:image-20220602175848-13.png]]
997 -
998 -
999 -[[image:image-20220602175912-14.png]]
1000 -
1001 -
1002 -**Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1003 -
1004 -[[image:image-20220602175638-10.png]]
1005 -
1006 -
1007 -== 6.2 How to change the LoRa Frequency Bands/Region? ==
1008 -
1009 -User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1010 -
1011 -
1012 -== 6.3 How many RS485-Slave can RS485-BL connects? ==
1013 -
1014 -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"]].
1015 -
1016 -
1017 -== 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1018 -
1019 -When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1020 -
1021 -Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1022 -
1023 -
1024 -= 7. Trouble Shooting =
1025 -
1026 -== 7.1 Downlink doesn’t work, how to solve it? ==
1027 -
1028 -Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1029 -
1030 -
1031 -== 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
1032 -
1033 -It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1034 -
1035 -
1036 -= 8. Order Info =
1037 -
1038 -(% style="color:blue" %)**Part Number: RS485-LN-XXX**
1039 -
1040 -(% style="color:blue" %)**XXX:**
1041 -
1042 -* (% style="color:blue" %)**EU433**(%%): frequency bands EU433
1043 -* (% style="color:blue" %)**EU868**(%%): frequency bands EU868
1044 -* (% style="color:blue" %)**KR920**(%%): frequency bands KR920
1045 -* (% style="color:blue" %)**CN470**(%%): frequency bands CN470
1046 -* (% style="color:blue" %)**AS923**(%%): frequency bands AS923
1047 -* (% style="color:blue" %)**AU915**(%%): frequency bands AU915
1048 -* (% style="color:blue" %)**US915**(%%): frequency bands US915
1049 -* (% style="color:blue" %)**IN865**(%%): frequency bands IN865
1050 -* (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1051 -* (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1052 -
1053 -
1054 -
1055 -= 9.Packing Info =
1056 -
1057 -
1058 -**Package Includes**:
1059 -
1060 -* RS485-LN x 1
1061 -* Stick Antenna for LoRa RF part x 1
1062 -* Program cable x 1
1063 -
1064 -**Dimension and weight**:
1065 -
1066 -* Device Size: 13.5 x 7 x 3 cm
1067 -* Device Weight: 105g
1068 -* Package Size / pcs : 14.5 x 8 x 5 cm
1069 -* Weight / pcs : 170g
1070 -
1071 -
1072 -
1073 -= 10. FCC Caution for RS485LN-US915 =
1074 -
1075 -(((
1076 -Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1077 -)))
1078 -
1079 -(((
1080 -This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
1081 -)))
1082 -
1083 -(((
1084 -
1085 -)))
1086 -
1087 -(((
1088 -**IMPORTANT NOTE:**
1089 -)))
1090 -
1091 -(((
1092 -**Note: **This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
1093 -)))
1094 -
1095 -(((
1096 -—Reorient or relocate the receiving antenna.
1097 -)))
1098 -
1099 -(((
1100 -—Increase the separation between the equipment and receiver.
1101 -)))
1102 -
1103 -(((
1104 -—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1105 -)))
1106 -
1107 -(((
1108 -—Consult the dealer or an experienced radio/TV technician for help.
1109 -)))
1110 -
1111 -(((
1112 -
1113 -)))
1114 -
1115 -(((
1116 -**FCC Radiation Exposure Statement:**
1117 -)))
1118 -
1119 -(((
1120 -This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.This equipment should be installed and operated with minimum distance 20cm between the radiator& your body.
1121 -)))
1122 -
1123 -
1124 -= 11. Support =
1125 -
1126 -* (((
1127 -Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
1128 -)))
1129 -* (((
1130 -Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].
1131 -)))
842 +**07 02 aa bb**  Same as AT+3V3T=(aa bb)
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