Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 47.2 >
edited by Xiaoling
on 2022/06/02 17:18
To version < 44.2 >
edited by Xiaoling
on 2022/06/02 16:54
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... ... @@ -662,15 +662,16 @@
662 662  
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.
665 +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
667 +Default value: 0, range:  0 ~~ 5 seconds
668 668  
669 +
669 669  * **AT Command:**
670 670  
671 671  (% class="box infomessage" %)
672 672  (((
673 -**AT+CMDDLaa=hex(bb cc)*1000**
674 +**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**
684 +0x AA aa bb cc
684 684  
685 -Same as: AT+CMDDLaa=hex(bb cc)*1000
686 +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**
690 + **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.
727 +**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  
735 +
740 740  * **AT Command:**
741 741  
742 -**AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
738 +(% 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]]
745 +[[image:1654134704555-320.png]]
752 752  
753 753  
754 754  * **Downlink Payload:**
... ... @@ -799,45 +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
797 +==== **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.
799 +User can set the output power duration before each sampling.
807 807  
808 -[[image:image-20220602171200-8.png||height="567" width="1007"]]
801 +* **AT Command:**
809 809  
810 -To enable the listening mode, use can run the command AT+RXMODE.
803 +**Example:**
811 811  
805 +**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)
807 +**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)
810 +* **LoRaWAN Downlink Command:**
823 823  
812 +**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 -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 -==== ====
814 +**07 02 aa bb**  Same as AT+3V3T=(aa bb)
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