Changes for page RS485-LN – RS485 to LoRaWAN Converter User Manual

Last modified by Mengting Qiu on 2025/07/14 09:59

From 30.2 to 30.1 From 102.11 to 102.10

From version 102.10

edited by Xiaoling
on 2023/04/25 11:19

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To version 30.2

edited by Xiaoling
on 2022/05/23 09:40

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Title

@@ -1,1 +1,1 @@
--RS485-LN – RS485 to LoRaWAN Converter User Manual
++RS485-LN – RS485 to LoRaWAN Converter

Content

@@ -1,79 +1,59 @@
--(% aria-label="1653266934636-343.png image widget" contenteditable="false" role="region" tabindex="-1" %)
--(((
--(% data-widget="image" style="text-align:center" %)
--[[image:1653266934636-343.png||height="385" width="385"]](% title="Click and drag to resize" %)
++(% style="text-align:center" %)
++[[image:1653266934636-343.png||height="385" width="385"]]
--(% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
--)))
++**RS485-LN – RS485 to LoRaWAN Converter User Manual**
--
--
--
  **Table of Contents:**
--{{toc/}}
--(% aria-label="macro:toc widget" contenteditable="false" role="region" tabindex="-1" %)
--(((
--(% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
--)))
++= 1.Introduction =
--
--
--
--
--= 1. Introduction =
--
  == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
--
  (((
--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.
--)))
--
  (((
--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.
++The Dragino RS485-LN is a RS485 to LoRaWAN Converter. It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
  )))
  (((
--(% 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.
++RS485-LN allows user to 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.
  )))
  (((
--(% 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.
++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.
  )))
  (((
--(% 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]]
++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.
  )))
++)))
++[[image:1653267211009-519.png||height="419" width="724"]]
--(% aria-label="1653267211009-519.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653267211009-519.png||data-widget="image" height="419" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
--
--
  == 1.2 Specifications ==
++**Hardware System:**
--(% style="color:#037691" %)**Hardware System:**
--
--* STM32L072xxxx MCU
++* STM32L072CZT6 MCU
  * SX1276/78 Wireless Chip
  * Power Consumption (exclude RS485 device):
  ** Idle: 32mA@12v
++
++*
  ** 20dB Transmit: 65mA@12v
--(% style="color:#037691" %)**Interface for Model:**
++**Interface for Model:**
  * RS485
  * Power Input 7~~ 24V DC.
--(% style="color:#037691" %)**LoRa Spec:**
++**LoRa Spec:**
  * Frequency Range:
  ** Band 1 (HF): 862 ~~ 1020 Mhz
@@ -92,13 +92,12 @@
  * Preamble detection.
  * 127 dB Dynamic Range RSSI.
  * Automatic RF Sense and CAD with ultra-fast AFC.
--* Packet engine up to 256 bytes with CRC
++* Packet engine up to 256 bytes with CRC.
  == 1.3 Features ==
--
  * LoRaWAN Class A & Class C protocol (default Class C)
--* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864/MA869
++* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
  * AT Commands to change parameters
  * Remote configure parameters via LoRa Downlink
  * Firmware upgradable via program port
@@ -108,7 +108,6 @@
  == 1.4 Applications ==
--
  * Smart Buildings & Home Automation
  * Logistics and Supply Chain Management
  * Smart Metering
@@ -118,30 +118,20 @@
  == 1.5 Firmware Change log ==
--
  [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
--
  == 1.6 Hardware Change log ==
--
  (((
  (((
--(((
  v1.2: Add External Interrupt Pin.
--)))
--(((
  v1.0: Release
  )))
--
--
  )))
--)))
  = 2. Power ON Device =
--
  (((
  The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
@@ -152,9 +152,7 @@
  Once there is power, the RS485-LN will be on.
  )))
--(% aria-label="1653268091319-405.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268091319-405.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
--
--
++[[image:1653268091319-405.png]]
  )))
  = 3. Operation Mode =
@@ -161,46 +161,29 @@
  == 3.1 How it works? ==
--
  (((
--(((
  The RS485-LN is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the RS485-LN. It will auto join the network via OTAA.
  )))
--
--)))
--
  == 3.2 Example to join LoRaWAN network ==
--
  Here shows an example for how to join the TTN V3 Network. Below is the network structure, we use [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]] as LoRaWAN gateway here.
++[[image:1653268155545-638.png||height="334" width="724"]]
--(% aria-label="1653268155545-638.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268155545-638.png||data-widget="image" height="334" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
--
--
  (((
--(((
  The RS485-LN in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method. The connection is as below:
--)))
--(((
 A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
--
--)))
++[[image:1653268227651-549.png||height="592" width="720"]]
--(% aria-label="1653268227651-549.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268227651-549.png||data-widget="image" height="592" width="720"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
--
--
  (((
--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:
--
--
++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:
  )))
  (((
--(% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
++**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-LN.
  )))
  (((
@@ -208,93 +208,70 @@
  )))
  )))
--(% aria-label="1652953462722-299.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953462722-299.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++[[image:1652953462722-299.png]]
--
  (((
  (((
  User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
--
--
  )))
  (((
--**Add APP EUI in the application.**
++Add APP EUI in the application.
  )))
  )))
--(% aria-label="image-20220519174512-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-1.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++[[image:image-20220519174512-1.png]]
--(% aria-label="image-20220519174512-2.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-2.png||data-widget="image" height="323" width="720"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++[[image:image-20220519174512-2.png||height="323" width="720"]]
--(% aria-label="image-20220519174512-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-3.png||data-widget="image" height="556" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++[[image:image-20220519174512-3.png||height="556" width="724"]]
--(% aria-label="image-20220519174512-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-4.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
++[[image:image-20220519174512-4.png]]
--
--(% title="Click and drag to resize" %)
--
  You can also choose to create the device manually.
--(% aria-label="1652953542269-423.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953542269-423.png||data-widget="image" height="710" width="723"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++[[image:1652953542269-423.png||height="710" width="723"]]
++Add APP KEY and DEV EUI
++[[image:1652953553383-907.png||height="514" width="724"]]
--**Add APP KEY and DEV EUI**
--(% aria-label="1652953553383-907.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953553383-907.png||data-widget="image" height="514" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
--
--
--
  (((
--(% style="color:blue" %)**Step 2**(%%): Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
--
--
++**Step 2**: Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
  )))
--(% aria-label="1652953568895-172.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953568895-172.png||data-widget="image" height="232" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++[[image:1652953568895-172.png||height="232" width="724"]]
--
  == 3.3 Configure Commands to read data ==
--
  (((
  (((
--(((
--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-LNviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
--
--
++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.
  )))
--)))
  (((
--(((
--(% style="color:red" %)**Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1**
++(% style="color:red" %)Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1
  )))
--
--
  )))
--)))
--=== 3.3.1 Configure UART settings for RS485 or TTL communication ===
++=== 3.3.1 onfigure UART settings for RS485 or TTL communication ===
--
  To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. And user need to make sure RS485-LN use the match UART setting to access the sensors. The related commands for UART settings are:
--
--(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
--|=(% style="width: 119px; background-color: rgb(217, 226, 243); color: rgb(0, 112, 192);" %)(((
++(% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
++|(((
  **AT Commands**
--)))|=(% style="width: 116px; background-color: rgb(217, 226, 243); color: rgb(0, 112, 192);" %)(((
++)))|(% style="width:285px" %)(((
  **Description**
--)))|=(% style="width: 190px;background-color:#D9E2F3;color:#0070C0" %)(((
++)))|(% style="width:347px" %)(((
  **Example**
  )))
--|(% style="width:119px" %)(((
++|(((
  AT+BAUDR
--)))|(% style="width:116px" %)(((
++)))|(% style="width:285px" %)(((
  Set the baud rate (for RS485 connection). Default Value is: 9600.
--)))|(% style="width:190px" %)(((
++)))|(% style="width:347px" %)(((
  (((
  AT+BAUDR=9600
  )))
@@ -303,11 +303,11 @@
  Options: (1200,2400,4800,14400,19200,115200)
  )))
  )))
--|(% style="width:119px" %)(((
++|(((
  AT+PARITY
--)))|(% style="width:116px" %)(((
++)))|(% style="width:285px" %)(((
  Set UART parity (for RS485 connection)
--)))|(% style="width:190px" %)(((
++)))|(% style="width:347px" %)(((
  (((
  AT+PARITY=0
  )))
@@ -316,9 +316,9 @@
  Option: 0: no parity, 1: odd parity, 2: even parity
  )))
  )))
--|(% style="width:119px" %)(((
++|(((
  AT+STOPBIT
--)))|(% style="width:116px" %)(((
++)))|(% style="width:285px" %)(((
  (((
  Set serial stopbit (for RS485 connection)
  )))
@@ -326,7 +326,7 @@
  (((
  )))
--)))|(% style="width:190px" %)(((
++)))|(% style="width:347px" %)(((
  (((
  AT+STOPBIT=0 for 1bit
  )))
@@ -342,1445 +342,910 @@
  === 3.3.2 Configure sensors ===
--
  (((
  (((
--Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won't run during each sampling.
--
--
++Some sensors might need to configure before normal operation. User can configure such sensor via PC and RS485 adapter or through RS485-LN AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**(%%). Each (% style="color:#4f81bd" %)**AT+CFGDEV **(%%)equals to send a RS485 command to sensors. This command will only run when user input it and won’t run during each sampling.
  )))
  )))
--(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
--|=(% style="width: 122px; background-color:#D9E2F3;color:#0070C0" %)**AT Commands**|=(% style="width: 198px; background-color:#D9E2F3;color:#0070C0" %)**Description**|=(% style="width: 190px;background-color:#D9E2F3;color:#0070C0" %)**Example**
--|(% style="width:122px" %)AT+CFGDEV|(% style="width:196px" %)(((
--(((
++(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
++|**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
++|AT+CFGDEV|(% style="width:418px" %)(((
  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
--)))
--(((
  AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
--)))
--(((
  mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
--)))
--)))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
++)))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
  === 3.3.3 Configure read commands for each sampling ===
--
  (((
--During each sampling, we need confirm what commands we need to send to the RS485 sensors to read data. After the RS485 sensors send back the value, it normally include some bytes and we only need a few from them for a shorten payload.
--
--To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
--
--This section describes how to achieve above goals.
--
--During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
--
--
--(% style="color:#037691" %)**Each RS485 commands include two parts:**
--
--
--~1. What commands RS485-LN will send to the RS485 sensors. There are total 15 commands from **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF**. All commands are of same grammar.
--
--2. How to get wanted value the from RS485 sensors returns from by 1). There are total 15 AT Commands to handle the return, commands are **AT+DATACUT1**,**AT+DATACUT2**,…, **AT+DATACUTF** corresponding to the commands from 1). All commands are of same grammar.
--
--3. Some RS485 device might has longer delay on reply, so user can use AT+CMDDL to set the timeout for getting reply after the RS485 command is sent. For example **AT+CMDDL1=1000** to send the open time to 1000ms
--
--
--After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
--
--Below are examples for the how above AT Commands works.
--
--
--(% style="color:#037691" %)**AT+COMMANDx **(%%)**: **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
--
--(% border="1" style="background-color:#f2f2f2; width:499px" %)
--|(% style="width:496px" %)(((
--**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
--
--**xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
--
--**m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
++RS485-BL is a battery powered device; it will sleep most of time. And wake up on each period and read RS485 / TTL sensor data and uplink.
  )))
--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.
--
--In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
--
--
--(% style="color:#037691" %)**AT+DATACUTx **(%%)**: **This command defines how to handle the return from AT+COMMANDx, max return length is 100 bytes.
--
--(% border="1" style="background-color:#f2f2f2; width:510px" %)
--|(% style="width:510px" %)(((
--**AT+DATACUTx=a,b,c**
--
--* **a: length for the return of AT+COMMAND**
--* **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
--* **c: define the position for valid value.  **
++(((
++During each sampling, we need to confirm what commands we need to send to the sensors to read data. After the RS485/TTL sensors send back the value, it normally includes some bytes and we only need a few from them for a shorten payload.
  )))
--**Examples:**
--
--
--* (% style="color:#037691" %)**Grab bytes**
--
--(% aria-label="image-20220602153621-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-1.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
--
--
--
--* (% style="color:#037691" %)**Grab a section**
--
--(% aria-label="image-20220602153621-2.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-2.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
--
--
--
--* (% style="color:#037691" %)**Grab different sections**
--
--(% aria-label="image-20220602153621-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-3.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
--
--
--)))
--
--=== 3.3.4 Compose the uplink payload ===
--
--
  (((
--Through AT+COMMANDx and AT+DATACUTx we got valid value from each RS485 commands, Assume these valid value are RETURN1, RETURN2, .., to RETURNx. The next step is how to compose the LoRa Uplink Payload by these RETURNs. The command is **AT+DATAUP.**
--
--
++To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
  )))
  (((
--(% style="color:#037691" %)**Examples: AT+DATAUP=0**
--
--
++This section describes how to achieve above goals.
  )))
  (((
--Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
++During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
  )))
  (((
--Final Payload is (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
++**Command from RS485-BL to Sensor:**
  )))
  (((
--Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
--
--
++RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
  )))
--[[image:image-20220929111027-1.png||height="509" width="685"]](% title="Click and drag to resize" %)
--
--
--(% style="color:#037691" %)**Examples: AT+DATAUP=1**
--
--
--Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
--
--Final Payload is (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
--
--
--~1. PAYVER: Defined by AT+PAYVER
--
--2. PAYLOAD COUNT: Total how many uplinks of this sampling.
--
--3. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
--
--4. DATA: Valid value: max 8 bytes for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 8 bytes
--
--
--(% aria-label="image-20220602155039-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602155039-4.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
--
--
--So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
--
--DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
--
--DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
--
--DATA3=the rest of Valid value of RETURN10= **30**
--
--
--(% style="color:red" %)**Notice: In firmware v1.3, the Max bytes has been changed according to the max bytes in different Frequency Bands for lowest SF. As below:**
--
--
--   ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
--
--   * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
--
--   * For US915 band, max 11 bytes for each uplink.
--
--   ~* For all other bands: max 51 bytes for each uplink.
--
--
--(% style="color:red" %)** When AT+DATAUP=1, the maximum number of segments is 15, and the maximum total number of bytes is 1500;**
--
--(% style="color:red" %)** When AT+DATAUP=1 and AT+ADR=0, the maximum number of bytes of each payload is determined by the DR value. (Since v1.4.0)**
--
--
--
--Below are the uplink payloads:
--
--
--(% aria-label="1654157178836-407.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157178836-407.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
--
--
--=== 3.3.5 Uplink on demand ===
--
--
--Except uplink periodically, RS485-LN is able to uplink on demand. The server send downlink command to RS485-LN and RS485 will uplink data base on the command.
--
--(% style="color:blue" %)**Downlink control command:**
--
--(% style="color:#4472c4" %)** 0x08 command**(%%): Poll an uplink with current command set in RS485-LN.
--
--(% style="color:#4472c4" %)** 0xA8 command**(%%): Send a command to RS485-LN and uplink the output from sensors.
--
--
--=== 3.3.6 Uplink on Interrupt ===
--
--
--RS485-LN support external Interrupt uplink since hardware v1.2 release.
--
--
--(% aria-label="1654157342174-798.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157342174-798.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
--
--Connect the Interrupt pin to RS485-LN INT port and connect the GND pin to V- port. When there is a high voltage (Max 24v) on INT pin. Device will send an uplink packet.
--
--
--== 3.4 Uplink Payload ==
--
--
--(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
--|=(% scope="row" style="width: 60px;background-color:#D9E2F3;color:#0070C0" %)(((
--Size(bytes)
--)))|(% style="background-color:#d9e2f3; color:#0070c0; width:80px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:360px" %)(((
--**Length depends on the return from the commands**
--)))
--|=(% style="width: 90px;" %)(((
--Value
--)))|(% style="width:114px" %)(((
--PAYLOAD_VER
--)))|(% style="width:353px" %)(((
--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.
--)))
--
--(% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
--
--(% title="Click and drag to resize" %)
--
--Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
--
--
--== 3.5 Configure RS485-LN via AT or Downlink ==
--
--
  (((
--User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
++**Handle return from sensors to RS485-BL**:
  )))
  (((
--There are two kinds of Commands:
++After RS485-BL send out a string to sensor, RS485-BL will wait for the return from RS485 or TTL sensor. And user can specify how to handle the return, by **AT+DATACUT or AT+SEARCH commands**
  )))
  * (((
--(% 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]]
++**AT+DATACUT**
  )))
--* (((
--(% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
--)))
--
  (((
--
++When the return value from sensor have fix length and we know which position the valid value we should get, we can use AT+DATACUT command.
  )))
--
--=== 3.5.1 Common Commands ===
--
--
--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]]
--
--
--=== 3.5.2 Downlink Response(Since firmware v1.4) ===
--
--
--Response feature is added to the server's downlink, a special package with a FPort of 200 will be uploaded immediately after receiving the data sent by the server.
--
--
--(% aria-label="image-20220602163333-5.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602163333-5.png||data-widget="image" height="263" width="1160"]]
--
--(% title="Click and drag to resize" %)
--
--The first byte of this package represents whether the configuration is successful, 00 represents failure, 01 represents success. Except for the first byte, the other is the previous downlink. (All commands except A8 type commands are applicable)
--
--
--=== 3.5.3 Sensor related commands ===
--
--
--
--==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
--
--
--(((
--This command is used to configure the RS485 devices; they won't be used during sampling. Max Length of AT+CFGDEV is **40 bytes**.
--)))
--
--(((
--* (% style="color:#037691" %)**AT Command**
--
--(((
--(% style="color:#4472c4" %)** AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**  (%%)         m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
--)))
--)))
--
--(((
--
--)))
--
  * (((
--(% style="color:#037691" %)**Downlink Payload**
++**AT+SEARCH**
  )))
  (((
--Format: (% style="color:#4472c4" %)** A8 MM NN XX XX XX XX YY**
++When the return value from sensor is dynamic length and we are not sure which bytes the valid data is, instead, we know what value the valid value following. We can use AT+SEARCH to search the valid value in the return string.
  )))
  (((
--Where:
++**Define wait timeout:**
  )))
--* (((
--MM: 1: add CRC-16/MODBUS ; 0: no CRC
--)))
--* (((
--NN: The length of RS485 command
--)))
--* (((
--XX XX XX XX: RS485 command total NN bytes
--)))
--* (((
  (((
--YY: How many bytes will be uplink from the return of this RS485 command,
++Some RS485 device might has longer delay on reply, so user can use AT+CMDDL to set the timeout for getting reply after the RS485 command is sent. For example, AT+CMDDL1=1000 to send the open time to 1000ms
  )))
--* (((
--if YY=0, RS485-LN will execute the downlink command without uplink;
--)))
--* (((
--if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
--)))
--* (((
--if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
--)))
--)))
--
  (((
--
--
--(% style="color:blue" %)**Example 1:**  (%%)  ~-~-> Configure without ask for uplink (YY=0)
++After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
  )))
--(((
--To connect a Modbus Alarm with below commands.
--)))
++**Examples:**
--* (((
--The command to active alarm is: 0A 05 00 04 00 01 4C B0. Where 0A 05 00 04 00 01 is the Modbus command to read the register 00 40 where stored the DI status. The 4C B0 is the CRC-16/MODBUS which calculate manually.
--)))
++Below are examples for the how above AT Commands works.
--* (((
--The command to deactivate alarm is: 0A 05 00 04 00 00 8D 70. Where 0A 05 00 04 00 00 is the Modbus command to read the register 00 40 where stored the DI status. The 8D 70 is the CRC-16/MODBUS which calculate manually.
--)))
++**AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
--(((
--
++(% border="1" class="table-bordered" %)
++|(((
++**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
--So if user want to use downlink command to control to RS485 Alarm, he can use:
--)))
++**xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
--(((
--(% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
++**m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
  )))
  (((
--(% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
++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.
  )))
  (((
--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.
++In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
  )))
  (((
--
++**AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
  )))
--(((
--(% style="color:blue" %)**Example 2:**  (%%)      ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
--)))
++(% border="1" class="table-bordered" %)
++|(((
++**AT+SEARCHx=aa,xx xx xx xx xx**
--(((
--User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
--)))
++* **aa: 1: prefix match mode; 2: prefix and suffix match mode**
++* **xx xx xx xx xx: match string. Max 5 bytes for prefix and 5 bytes for suffix**
--(((
  )))
--(((
--(((
--RS485-LN got this downlink command and send (% style="color:#4f81bd" %)**0A 08 00 04 00 01 **(%%)to Modbus network. One of the RS485 sensor in the network send back Modbus reply **0A 08 00 04 00 00**. RS485-LN get this reply and combine with the original downlink command and uplink. The uplink message is:    **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
--)))
++**Examples:**
--
--)))
++~1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
--(((
-- (% aria-label="1654159460680-153.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654159460680-153.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
--)))
++If we set AT+SEARCH1=1,1E 56 34.      (max 5 bytes for prefix)
++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**
++[[image:1653269403619-508.png]]
--==== (% style="color:blue" %)**Set Payload version**(%%) ====
++2. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
++If we set AT+SEARCH1=2, 1E 56 34+31 00 49
--(((
--This is the first byte of the uplink payload. RS485-LN can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
--)))
++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**
--(((
--* (% style="color:#037691" %)**AT Command:**
++[[image:1653269438444-278.png]]
--(% style="color:#4472c4" %)** AT+PAYVER:    ** (%%) Set PAYVER field = 1
++**AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
--
--)))
++|(((
++**AT+DATACUTx=a,b,c**
--* (((
--(% style="color:#037691" %)**Downlink Payload:**
++* **a: length for the return of AT+COMMAND**
++* **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
++* **c: define the position for valid value.  **
  )))
--(((
--(% style="color:#4472c4" %)** 0xAE 01** (%%)   ~-~->     Set PAYVER field =  0x01
--)))
++Examples:
--(((
--(% style="color:#4472c4" %)** 0xAE 0F**   (%%) ~-~->     Set PAYVER field =  0x0F
--)))
++* Grab bytes:
++[[image:1653269551753-223.png||height="311" width="717"]]
--**1 )  Add the interrupt flag at the highest bit of the Payver byte, that is, Byte7 of the first byte. (Since v1.4.0)**
++* Grab a section.
++[[image:1653269568276-930.png||height="325" width="718"]]
--[[image:image-20220824145428-2.png||height="168" width="1300"]]
++* Grab different sections.
++[[image:1653269593172-426.png||height="303" width="725"]]
++(% style="color:red" %)**Note:**
--**2 )  if the data intercepted by AT+DATACUT or AT+MBFUN is empty, it will display NULL, and the payload will be filled with n FFs.**
++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.
++Example:
--[[image:image-20220824145428-3.png||height="308" width="1200"]]
++(% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
++(% style="color:red" %)AT+SEARCH1=1,1E 56 34
++(% style="color:red" %)AT+DATACUT1=0,2,1~~5
--==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
++(% style="color:red" %)Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
++(% style="color:red" %)String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
--(((
--AT+COMMANDx or AT+DATACUTx
--)))
++(% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
--(((
--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"]].
--)))
++[[image:1653269618463-608.png]]
--(((
--
--)))
++=== 3.3.4 Compose the uplink payload ===
--* (((
--(% style="color:#037691" %)**AT Command:**
--)))
--
--(% style="color:#4472c4" %)** AT+COMMANDx:    ** (%%) Configure RS485 read command to sensor.
--
--(% style="color:#4472c4" %)** AT+DATACUTx:        **(%%)  Configure how to handle return from RS485 devices.
--
--
--* (((
--(% style="color:#037691" %)**Downlink Payload:**
--)))
--
  (((
--(% style="color:#4472c4" %)** 0xAF**(%%)  downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
--
--
++Through AT+COMMANDx and AT+DATACUTx we got valid value from each RS485 commands, Assume these valid value are RETURN1, RETURN2, .., to RETURNx. The next step is how to compose the LoRa Uplink Payload by these RETURNs. The command is **AT+DATAUP.**
  )))
  (((
--(% style="color:red" %)**Note : if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
--
--
++(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
  )))
  (((
--Format: (% style="color:#4472c4" %)** AF MM NN LL XX XX XX XX YY**
++Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
  )))
  (((
--Where:
++Final Payload is
  )))
--* (((
--MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
--)))
--* (((
--NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
--)))
--* (((
--LL:   The length of AT+COMMAND or AT+DATACUT command
--)))
--* (((
--XX XX XX XX: AT+COMMAND or AT+DATACUT command
--)))
--* (((
--YY:   If YY=0, RS485-LN will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
--)))
--
  (((
--
--
--**Example:**
++(% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
  )))
  (((
--(% style="color:#037691" %)**AF 03 01 06 0A 05 00 04 00 01 00**(%%): Same as AT+COMMAND3=0A 05 00 04 00 01,1
++Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
  )))
--(((
--(% style="color:#037691" %)**AF 03 02 06**(% style="color:orange" %)** 10 **(% style="color:red" %)**01 **(% style="color:green" %)**05 06 09 0A**(% style="color:#037691" %)** 00**(%%): Same as AT+DATACUT3=(% style="color:orange" %)**16**(%%),(% style="color:red" %)**1**(%%),(% style="color:green" %)**5+6+9+10**
--)))
++[[image:1653269759169-150.png||height="513" width="716"]]
--(((
--(% 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**
--)))
++(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
++Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
++Final Payload is
--==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
++(% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
++1. Battery Info (2 bytes): Battery voltage
++1. PAYVER (1 byte): Defined by AT+PAYVER
++1. PAYLOAD COUNT (1 byte): Total how many uplinks of this sampling.
++1. PAYLOAD# (1 byte): Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
++1. DATA: Valid value: max 6 bytes(US915 version here, Notice*!) for each uplink so each uplink <= 11 bytes. For the last uplink, DATA will might less than 6 bytes
--(((
--(% style="color:#4472c4" %)** 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]].
--)))
++[[image:1653269916228-732.png]]
--(((
--This command is valid since v1.3 firmware version
--)))
--(((
--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.
--)))
++So totally there will be 3 uplinks for this sampling, each uplink includes 6 bytes DATA
--(((
--
--)))
++DATA1=RETURN1 Valid Value = 20 20 0a 33 90 41
--(((
--**Example:**
--)))
++DATA2=1^^st^^ ~~ 6^^th^^ byte of Valid value of RETURN10= 02 aa 05 81 0a 20
--* (((
--AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
--)))
--* (((
--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.
--)))
--* (((
--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.
++DATA3=7^^th^^ ~~ 11^^th^^ bytes of Valid value of RETURN10 = 20 20 20 2d 30
--
--)))
--(% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]]
--(% title="Click and drag to resize" %)
++Below are the uplink payloads:
--(% aria-label="image-20220602165351-7.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-7.png||data-widget="image"]](% title="Click and drag to resize" %)
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image021.png]]
++Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:
--==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
++   ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink ( so 51 -5 = 46 max valid date)
++   * For AU915/AS923 bands, if UplinkDwell time=1, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
--(((
--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.
--)))
++   * For US915 band, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
--(((
--Default value: 0, range:  0 ~~ 65 seconds
--)))
++   ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
--(((
--* (% style="color:#037691" %)** AT Command:**
--(% style="color:#4472c4" %)** AT+CMDDLaa=hex(bb cc)*1000**
--)))
--(((
--
++1.
++11.
++111. Uplink on demand
--**Example:**
--)))
++Except uplink periodically, RS485-BL is able to uplink on demand. The server sends downlink command to RS485-BL and RS485 will uplink data base on the command.
--(((
--(% style="color:#4472c4" %)** AT+CMDDL1=1000** (%%)to send the open time to 1000ms
--)))
++Downlink control command:
--(((
--
--)))
++[[0x08 command>>path:#downlink_08]]: Poll an uplink with current command set in RS485-BL.
--* (((
--(% style="color:#037691" %)** Downlink Payload:**
--)))
++[[0xA8 command>>path:#downlink_A8]]: Send a command to RS485-BL and uplink the output from sensors.
--(((
--(% style="color:#4472c4" %)** 0x AA aa bb cc**(%%) Same as: AT+CMDDLaa=hex (bb cc)
--)))
--(((
--
--**Example:**
--)))
++1.
++11.
++111. Uplink on Interrupt
--(((
--**0xAA 01 03 E8**    ~-~-> Same as  **AT+CMDDL1=1000 ms**
--)))
++Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
++AT+INTMOD=0  Disable Interrupt
++AT+INTMOD=1  Interrupt trigger by rising or falling edge.
--==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
++AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
++AT+INTMOD=3  Interrupt trigger by rising edge.
--(((
--Define to use one uplink or multiple uplinks for the sampling.
--)))
--(((
--The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
++1.
++11. Uplink Payload
--
--)))
++|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
++|Value|(((
++Battery(mV)
--(((
--* (% style="color:#037691" %)** AT Command:**
++&
--(% style="color:#4472c4" %)** AT+DATAUP=0**
++Interrupt _Flag
++)))|(((
++PAYLOAD_VER
--(% style="color:#4472c4" %)** AT+DATAUP=1**
--
--)))
++)))|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.
--(% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%)  **~-~->** Same as AT+DATAUP=1，20000   ~/~/  (00 00 14 is 20 seconds)
++Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
--Each uplink is sent to the server at 20-second intervals when segmented.
++function Decoder(bytes, port) {
--* (((
--(% style="color:#037691" %)** Downlink Payload:**
--)))
++~/~/Payload Formats of RS485-BL Deceive
--(% style="color:#4472c4" %)** 0xAD 00** (%%)  **~-~->** Same as AT+DATAUP=0
++return {
--(% style="color:#4472c4" %)** 0xAD 01**  (%%) **~-~->** Same as AT+DATAUP=1  ~/~/Each uplink is sent to the server one after the other as it is segmented.
++    ~/~/Battery,units:V
++    BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++    ~/~/GPIO_EXTI
--(% style="color:#4472c4" %)** AT+DATAUP=1,Timeout**
++    EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
++    ~/~/payload of version
--* (((
--(% style="color:#037691" %)** Downlink Payload:**
--)))
++    Pay_ver:bytes[2],
--(% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%)  **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
++    };
--Each uplink is sent to the server at 20-second intervals when segmented.
++  }
--==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
--(((
--Ask device to send an uplink immediately.
--)))
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
--(((
--No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
--)))
++TTN V3 uplink screen shot.
--(((
--
--)))
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
--* (((
--(% style="color:#037691" %)** Downlink Payload:**
--)))
++1.
++11. Configure RS485-BL via AT or Downlink
--(((
--(% style="color:#4472c4" %)** 0x08 FF**(%%), RS485-LN will immediately send an uplink.
--)))
++User can configure RS485-BL via [[AT Commands >>path:#_Using_the_AT]]or LoRaWAN Downlink Commands
++There are two kinds of Commands:
++* **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: http:~/~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands
--==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
++* **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
++1.
++11.
++111. Common Commands:
--(((
--The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
++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: [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands>>url:http://wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands]]
--
--)))
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++1.
++11.
++111. Sensor related commands:
--(((
--(% style="color:#4472c4" %)** AT+CMDEAR=mm,nn** (%%)  mm: start position of erase ,nn: stop position of erase
--)))
++==== Choose Device Type (RS485 or TTL) ====
--(((
--
++RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
--Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
--)))
++* AT Command
--(((
--Example screen shot after clear all RS485 commands.
--)))
++**AT+MOD=1** ~/~/ Set to support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
--(((
--
--)))
++**AT+MOD=2** ~/~/ Set to support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
--(((
--The uplink screen shot is:
--)))
--(% aria-label="1654160691922-496.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654160691922-496.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++* Downlink Payload
++**0A aa**     à same as AT+MOD=aa
--* (((
--(% style="color:#037691" %)** Downlink Payload:**
--)))
--(((
--(% style="color:#4472c4" %)** 0x09 aa bb** (%%) same as AT+CMDEAR=aa,bb
--)))
++==== [[RS485 Debug Command>>path:#downlink_A8]] (AT+CFGDEV) ====
++This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
--==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
++* AT Command
++AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
--(((
--Set the Rs485 serial communication parameters:
--)))
++m: 0: no CRC; 1: add CRC-16/MODBUS in the end of this command.
--(((
--(% style="color:#037691" %)**AT Command:**
--)))
--(((
--* Set Baud Rate
--)))
--(% style="color:#4472c4" %)**        AT+BAUDR=9600** (%%)   ~/~/  Options: (200~~115200)  When using low baud rate or receiving multiple bytes, you need to use AT+CMDDL to increase the receive timeout (the default receive timeout is 400ms), otherwise data will be lost
++* Downlink Payload
++Format: A8 MM NN XX XX XX XX YY
--(((
--* Set UART Parity
--)))
++Where:
--(% style="color:#4472c4" %)**       AT+PARITY=0** (%%)   ~/~/  Option: 0: no parity, 1: odd parity, 2: even parity
++* MM: 1: add CRC-16/MODBUS ; 0: no CRC
++* NN: The length of RS485 command
++* XX XX XX XX: RS485 command total NN bytes
++* YY: How many bytes will be uplink from the return of this RS485 command, if YY=0, RS485-BL will execute the downlink command without uplink; if YY>0, RS485-BL will uplink total YY bytes from the output of this RS485 command
++**Example 1:**
--(((
--* Set STOPBIT
--)))
++To connect a Modbus Alarm with below commands.
--(% style="color:#4472c4" %)**        AT+STOPBIT=0** (%%)   ~/~/  Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
++* The command to active alarm is: 0A 05 00 04 00 01 4C B0. Where 0A 05 00 04 00 01 is the Modbus command to read the register 00 40 where stored the DI status. The 4C B0 is the CRC-16/MODBUS which calculate manually.
++* The command to deactivate alarm is: 0A 05 00 04 00 00 8D 70. Where 0A 05 00 04 00 00 is the Modbus command to read the register 00 40 where stored the DI status. The 8D 70 is the CRC-16/MODBUS which calculate manually.
--(((
--(% style="color:#037691" %)**Downlink Payload:**
--)))
++So if user want to use downlink command to control to RS485 Alarm, he can use:
--(((
--(% style="color:#4472c4" %)**     A7 01 aa bb**:   (%%)  Same  AT+BAUDR=hex(aa bb)*100
--)))
++**A8 01 06 0A 05 00 04 00 01 00**: to activate the RS485 Alarm
--(((
--**Example:**
--)))
++**A8 01 06 0A 05 00 04 00 00 00**: to deactivate the RS485 Alarm
--* (((
--A7 01 00 60     same as AT+BAUDR=9600
--)))
--* (((
--A7 01 04 80     same as AT+BAUDR=115200
--)))
++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.
--(((
--* A7 02 aa:    Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
--)))
--(((
--* A7 03 aa:    Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
--)))
++**Example 2:**
++Check TTL Sensor return:
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
--==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.0)**(%%) ====
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++==== Set Payload version ====
--(% style="color:#4472c4" %)** AT+DATABIT=7    **(%%)~/~/ Set the data bits to 7
++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.
--(% style="color:#4472c4" %)** AT+DATABIT=8    **(%%)~/~/ Set the data bits to 8
++* AT Command:
--* (((
--(% style="color:#037691" %)**Downlink Payload:**
--)))
++AT+PAYVER: Set PAYVER field = 1
--(% style="color:#4472c4" %)** A7 04 07**(%%): Same as  AT+DATABIT=7
--(% style="color:#4472c4" %)** A7 04 08**(%%): Same as  AT+DATABIT=8
++* Downlink Payload:
++0xAE 01   à Set PAYVER field =  0x01
++0xAE 0F   à Set PAYVER field =  0x0F
--==== (% style="color:blue" %)**Encrypted payload(Since Version 1.4.0)**(%%) ====
--(((
--
--)))
++==== Set RS485 Sampling Commands ====
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
--(% style="color:#4472c4" %)** AT+DECRYPT=1  ** (%%)  ~/~/ The payload is uploaded without encryption
++These three commands are used to configure how the RS485-BL polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>path:#polling_485]].
--(% style="color:#4472c4" %)** AT+DECRYPT=0  ** (%%)  ~/~/ Encrypt when uploading payload (default)
++* AT Command:
++AT+COMMANDx: Configure RS485 read command to sensor.
--==== (% style="color:blue" %)**Get sensor value(Since Version 1.4.0)**(%%) ====
++AT+DATACUTx: Configure how to handle return from RS485 devices.
++AT+SEARCHx: Configure search command
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
--(% style="color:#4472c4" %)** AT+GETSENSORVALUE=0  **(%%)  ~/~/ The serial port gets the reading of the current sensor
++* Downlink Payload:
--(% style="color:#4472c4" %)** AT+GETSENSORVALUE=1  **(%%)  ~/~/ The serial port gets the current sensor reading and uploads it.
++0xAF downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
++Note: if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
++Format: AF MM NN LL XX XX XX XX YY
--==== (% style="color:blue" %)**Resets the downlink packet count(Since Version 1.4.0)**(%%) ====
++Where:
++* MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
++* NN: 0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
++* LL: The length of AT+COMMAND or AT+DATACUT command
++* XX XX XX XX: AT+COMMAND or AT+DATACUT command
++* 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.
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++Example:
--(% style="color:#4472c4" %)** AT+DISFCNTCHECK=0  **(%%) ~/~/  When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node will no longer receive downlink packets (default)
++**AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
--(% style="color:#4472c4" %)** AT+DISFCNTCHECK=1  **(%%) ~/~/  When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node resets the downlink packet count and keeps it consistent with the server downlink packet count.
++**AF 03 02 06 10 01 05 06 09 0A 00**: Same as AT+DATACUT3=**16**,**1**,**5+6+9+10**
++**AF 03 02 06 0B 02 05 07 08 0A 00**: Same as AT+DATACUT3=**11**,**2**,**5~~7+8~~10**
--==== (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches(Since Version 1.4.0)**(%%) ====
++0xAB downlink command can be used for set AT+SEARCHx
++Example: **AB aa 01 03 xx xx xx** (03 here means there are total 3 bytes after 03) So
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++* AB aa 01 03 xx xx xx  same as AT+SEARCHaa=1,xx xx xx
++* 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
-- (% style="color:#4472c4" %)** AT+DISMACANS=0**  (%%)   ~/~/  When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of 11 bytes (DR0 of US915, DR2 of AS923, DR2 of AU195), the node will send a packet with a payload of 00 and a port of 4. (default)
++**AB aa 02 03 xx xx xx 02 yy yy**  same as **AT+SEARCHaa=2,xx xx xx+yy yy**
-- (% style="color:#4472c4" %)** AT+DISMACANS=1**   (%%)   ~/~/  When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of the DR, the node will ignore the MACANS and not reply, and only upload the payload part.
++==== Fast command to handle MODBUS device ====
--* (((
--(% style="color:#037691" %)** Downlink Payload:**
--)))
++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]].
--(% style="color:#4472c4" %)** 0x21 00 01 **  (%%)       ~/~/ Set  the DISMACANS=1
++This command is valid since v1.3 firmware version
++AT+MBFUN has only two value:
--==== (% style="color:blue" %)**Copy downlink to uplink (Since Version 1.4.0)**(%%) ====
++* AT+MBFUN=1: Enable Modbus reading. And get response base on the MODBUS return
++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.
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++* AT+MBFUN=0: Disable Modbus fast reading.
--(% style="color:#4472c4" %)** AT+RPL=5**  (%%)   ~/~/ After receiving the package from the server, it will immediately upload the content of the package to the server, the port number is 100.
++Example:
--Example：**aa xx xx xx xx**         ~/~/ aa indicates whether the configuration has changed, 00 is yes, 01 is no; xx xx xx xx are the bytes sent.
++* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0).
++* 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.
++* 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.
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image025.png]]
--[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173747-6.png?width=1124&height=165&rev=1.1||alt="image-20220823173747-6.png"]]
--For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
++* Downlink Commands:
--[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]
++A9 aa -à Same as AT+MBFUN=aa
--For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
++==== RS485 command timeout ====
++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.
--==== (% style="color:blue" %)**Query version number and frequency band 、TDC(Since Version 1.4.0)**(%%) ====
++Default value: 0, range:  0 ~~ 5 seconds
--(((
--* (% style="color:#037691" %)**Downlink Payload:**
++* AT Command:
--(% style="color:#4472c4" %)** 26 01  ** (%%) ~/~/   Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
--)))
++AT+CMDDLaa=hex(bb cc)
++Example:
--Example：
++**AT+CMDDL1=1000** to send the open time to 1000ms
--[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173929-8.png?width=1205&height=76&rev=1.1||alt="image-20220823173929-8.png"]]
++* Downlink Payload:
++0x AA aa bb cc
++Same as: AT+CMDDLaa=hex(bb cc)
--==== (% style="color:blue" %)** Monitor RS485 communication of other devices(Since Version 1.4.0)**(%%) ====
++   Example:
++   0xAA 01 03 E8  à Same as **AT+CMDDL1=1000 ms**
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
--(% style="color:#4472c4" %)**AT+RXMODE=1,10**    (%%)     ~/~/ When the RS485-LN receives more than 10 bytes from the RS485, it immediately sends the uplink of the received data.
++==== [[Uplink>>path:#downlink_A8]] payload mode ====
--(% style="color:#4472c4" %)**AT+RXMODE=2,500    ** (%%) ~/~/  RS485-LN uploads data as uplink from the first byte received by RS485 to the data received within 500ms after that.
++Define to use one uplink or multiple uplinks for the sampling.
--(% style="color:#4472c4" %)**AT+RXMODE=0,0  **    (%%)    ~/~/  Disable this mode (default)
++The use of this command please see: [[Compose Uplink payload>>path:#DataUP]]
++* AT Command:
--* (((
--(% style="color:#037691" %)**Downlink Payload:**
--)))
++AT+DATAUP=0
--(% style="color:#4472c4" %)** A6 aa bb bb               ** (%%)  ~/~/ same as AT+RXMODE=aa,bb
++AT+DATAUP=1
--[[image:image-20220824144240-1.png]]
++* Downlink Payload:
--== 3.6 Listening mode for RS485 network ==
++0xAD 00   à Same as AT+DATAUP=0
++0xAD 01   à Same as AT+DATAUP=1
--(((
--This feature support since firmware v1.4
--)))
--(((
--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.
++==== Manually trigger an Uplink ====
--
--)))
++Ask device to send an uplink immediately.
--(% aria-label="image-20220602171200-8.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602171200-8.png||data-widget="image" height="567" width="1007"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
++* Downlink Payload:
--(% title="Click and drag to resize" %)
++0x08 FF, RS485-BL will immediately send an uplink.
--(((
--To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
--)))
--(((
--
--)))
++==== Clear RS485 Command ====
--(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
--|=(% style="width: 120px;background-color:#D9E2F3;color:#0070C0" %)(((
--**Command example**
--)))|=(% style="width: 390px;background-color:#D9E2F3;color:#0070C0" %)(((
--**Function**
--)))
--|(% style="width:100px" %)(((
--AT+RXMODE=1,10
--)))|(% style="width:400px" %)(((
--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.
--)))
--|(% style="width:100px" %)(((
--AT+RXMODE=2,500
--)))|(% style="width:400px" %)(((
--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
--)))
--|(% style="width:100px" %)(((
--AT+RXMODE=0,0
--)))|(% style="width:400px" %)(((
--Disable listening mode. This is the default settings.
--)))
--|(% style="width:100px" %)(((
--
--)))|(% style="width:400px" %)(((
--A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
--)))
++The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
--(((
--
--(% style="color:#037691" %)**Downlink Command:**
--)))
++* AT Command:
--(((
--(% style="color:#4472c4" %)** 0xA6 aa bb cc **(%%) same as AT+RXMODE=aa,(bb<<8 | cc)
--)))
++**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
--(((
--**Example**:
--)))
++Example screen shot after clear all RS485 commands.
--(((
--The RS485-LN is set to AT+RXMODE=2,1000
--)))
--(((
--There is a two Modbus commands in the RS485 network as below:
--)))
--(((
--The Modbus master send a command: (% style="background-color:#ffc000" %)**01 03 00 00 00 02 c4 0b**
--)))
++The uplink screen shot is:
--(((
--And Modbus slave reply with: (% style="background-color:green" %)**01 03 04 00 00 00 00 fa 33**
--)))
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
--(((
--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**
--
--)))
++* Downlink Payload:
--(((
--(% aria-label="image-20220602171200-9.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602171200-9.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
--)))
++0x09 aa bb  same as AT+CMDEAR=aa,bb
--(((
--
--)))
--(((
--(((
--(% 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.**
--)))
--)))
++==== Set Serial Communication Parameters ====
++Set the Rs485 serial communication parameters:
--== 3.7 Buttons ==
++* AT Command:
++Set Baud Rate:
--(% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
--|=(% style="width: 50px;" %)**Button**|=(% style="width: 380px;" %)**Feature**
--|(% style="width:50px" %)**ACT**|(% style="width:361px" %)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**
--|(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
--|(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
++AT+BAUDR=9600    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
--== 3.8 LEDs ==
++Set UART parity
--(% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
--|=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
--|**PWR**|Always on if there is power
--|**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.
++AT+PARITY=0    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
--= 4. Case Study =
++Set STOPBIT
--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]]
++AT+STOPBIT=0    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
--= 5. Use AT Command =
++* Downlink Payload:
--== 5.1 Access AT Command ==
++A7 01 aa bb: Same  AT+BAUDR=hex(aa bb)*100
++Example:
--(((
--RS485-LN supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-LN to use AT command, as below.
++* A7 01 00 60   same as AT+BAUDR=9600
++* A7 01 04 80     same as AT+BAUDR=115200
--
--)))
++A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
--(% aria-label="1654162355560-817.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162355560-817.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
++==== Control output power duration ====
--(((
--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-LN. The default password is 123456. Below is the output for reference:
++User can set the output power duration before each sampling.
--
--)))
++* AT Command:
--(% aria-label="1654162368066-342.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162368066-342.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++Example:
++AT+3V3T=1000 ~/~/ 3V3 output power will open 1s before each sampling.
--(((
--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/]]
--)))
++AT+5VT=1000 ~/~/ +5V output power will open 1s before each sampling.
--== 5.2 Common AT Command Sequence ==
++* LoRaWAN Downlink Command:
--=== 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
++07 01 aa bb  Same as AT+5VT=(aa bb)
++07 02 aa bb  Same as AT+3V3T=(aa bb)
--If device has not joined network yet:
--* (% style="color:#037691" %)**AT+FDR**
--* (% style="color:#037691" %)**AT+NJM=0**
--* (% style="color:#037691" %)**ATZ**
--(((
--
--If device already joined network:
++1.
++11. Buttons
--* (% style="color:#037691" %)**AT+NJM=0**
--* (% style="color:#037691" %)**ATZ**
--)))
++|**Button**|**Feature**
++|**RST**|Reboot RS485-BL
++1.
++11. +3V3 Output
++RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
--=== 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
++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.
--(% style="background-color:#dcdcdc" %)**AT+FDR** (%%)          Reset Parameters to Factory Default, Keys Reserve
++The +3V3 output time can be controlled by AT Command.
--(% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)   Set to ABP mode
++**AT+3V3T=1000**
--(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)   Set the Adaptive Data Rate Off
++Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
--(% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%)   Set Data Rate
--(% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%)                 Set transmit interval to 60 seconds
++By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
--(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)          Set transmit frequency to 868.4Mhz
--(% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%)     Set RX2Frequency to 868.4Mhz (according to the result from server)
++1.
++11. +5V Output
--(% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%)                    Set RX2DR to match the downlink DR from server. see below
++RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
--(% 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.
++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.
--(% style="background-color:#dcdcdc" %)**ATZ**       (%%)                                Reset MCU
++The 5V output time can be controlled by AT Command.
--(% style="color:red" %)**Note:**
++**AT+5VT=1000**
--(((
--(% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
--2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
--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.
--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
++Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
--
--)))
--(% aria-label="1654162478620-421.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162478620-421.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++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.
--= 6. FAQ =
--== 6.1 How to upgrade the image? ==
++1.
++11. LEDs
--(((
--The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
--)))
++|**LEDs**|**Feature**
++|**LED1**|Blink when device transmit a packet.
--* (((
--Support new features
--)))
--* (((
--For bug fix
--)))
--* (((
--Change LoRaWAN bands.
--)))
++1.
++11. Switch Jumper
--(((
--Below shows the hardware connection for how to upload an image to RS485-LN:
--)))
++|**Switch Jumper**|**Feature**
++|**SW1**|(((
++ISP position: Upgrade firmware via UART
--(% aria-label="1654162535040-878.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162535040-878.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
--
--(% title="Click and drag to resize" %)
--
--(((
--(% style="color:blue" %)**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]].
--
--
++Flash position: Configure device, check running status.
  )))
++|**SW2**|(((
++5V position: set to compatible with 5v I/O.
--(((
--(% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:https://www.dropbox.com/sh/g99v0fxcltn9r1y/AACP33wo_ZQLsxW2MJ70oUoba/RS485-LN/Firmware?dl=0&subfolder_nav_tracking=1]].
--
--
++3.3v position: set to compatible with 3.3v I/O.,
  )))
--(((
--(% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
+++3.3V: is always ON
--
--)))
+++5V: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
--(((
--(((
--(((
--(% 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.
--)))
--)))
--)))
++1. Case Study
++User can check this URL for some case studies.
--(% aria-label="image-20220602175818-12.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175818-12.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++[[http:~~/~~/wiki.dragino.com/index.php?title=APP_RS485_COMMUNICATE_WITH_SENSORS>>url:http://wiki.dragino.com/index.php?title=APP_RS485_COMMUNICATE_WITH_SENSORS]]
--(% aria-label="image-20220602175848-13.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175848-13.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
--(% aria-label="image-20220602175912-14.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175912-14.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++1. Use AT Command
++11. Access AT Command
++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.
--(% style="color:red" %)**Notice**: **In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:**
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
--(% aria-label="image-20220602175638-10.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175638-10.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
++In PC, User needs to set **serial tool**(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to **9600** to access to access serial console of RS485-BL. The default password is 123456. Below is the output for reference:
--== 6.2 How to change the LoRa Frequency Bands/Region? ==
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
--User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
++More detail AT Command manual can be found at [[AT Command Manual>>path:#AT_COMMAND]]
--== 6.3 How many RS485-Slave can RS485-LN connects? ==
--The RS485-LN can support max 32 RS485 devices. Each uplink command of RS485-LN can support max 16 different RS485 command. So RS485-LN 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"]].
++1.
++11. Common AT Command Sequence
++111. Multi-channel ABP mode (Use with SX1301/LG308)
++If device has not joined network yet:
--== 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
++AT+FDR
++AT+NJM=0
--When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
++ATZ
--Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
++If device already joined network:
--== 6.5 Can i use point to point communication for RS485-LN? ==
++AT+NJM=0
++ATZ
--Yes, please updating point-to-point [[firmware>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AACP33wo_ZQLsxW2MJ70oUoba/RS485-LN/Firmware?dl=0&subfolder_nav_tracking=1]]，then refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
++1.
++11.
++111. Single-channel ABP mode (Use with LG01/LG02)
++AT+FDR   Reset Parameters to Factory Default, Keys Reserve
--== 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
++AT+NJM=0 Set to ABP mode
++AT+ADR=0 Set the Adaptive Data Rate Off
--[[Use RS485-BL or RS485-LN to connect to RS232 devices. - DRAGINO>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/RS485%20to%20RS232/]]
++AT+DR=5  Set Data Rate
++AT+TDC=60000  Set transmit interval to 60 seconds
--== 6.7 How to judge whether there is a problem with the set COMMAND ==
++AT+CHS=868400000 Set transmit frequency to 868.4Mhz
--=== 6.7.1 Introduce: ===
++AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
++AT+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
--Users can use below the structure to fast debug the communication between RS485BL and RS485-LN. The principle is to put the PC in the RS485 network and sniff the packet between Modbus MTU and RS485-BL/LN.  We can use this way to:
++AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
--1. Test if Modbus-MTU works with PC commands.
--1. Check if RS485-LN sent the expected command to Mobus-MTU
--1. Check if Modbus-MTU return back the expected result to RS485-LN.
--1. If both b) and c) has issue, we can compare PC’s output and RS485-LN output.
++ATZ          Reset MCU
--[[image:image-20221130104310-1.png||height="380" width="680"]]
++**Note:**
++1. Make sure the device is set to ABP mode in the IoT Server.
++1. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
++1. 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.
++1. 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
--Example Connection:
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
--[[image:image-20221130104310-2.png]]
++1. FAQ
++11. How to upgrade the image?
--=== 6.7.2 Set up PC to monitor RS485 network With Serial tool ===
++The RS485-BL LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-BL to:
++* Support new features
++* For bug fix
++* Change LoRaWAN bands.
--(% style="color:red" %)**Note: Receive and send set to hex mode**
++Below shows the hardware connection for how to upload an image to RS485-BL:
--[[image:image-20221130104310-3.png||height="616" width="714"]]
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
++**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]].
--=== 6.7.3 With ModRSsim2: ===
++**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
++**Step3: **Open flashloader; choose the correct COM port to update.
--(% style="color:blue" %)**(1) Select serial port MODBUS RS-232**
--[[image:image-20221130104310-4.png||height="390" width="865"]]
++|(((
++HOLD PRO then press the RST button, SYS will be ON, then click next
++)))
++|(((
++Board detected
++)))
--(% style="color:blue" %)**(2) Click the serial port icon**
++|(((
++
++)))
--[[image:image-20221130104310-5.png||height="392" width="870"]]
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image031.png]]            [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image032.png]]
--(% style="color:blue" %)**(3) After selecting the correct serial port and baud rate, click ok**
--[[image:image-20221130104310-6.png]]
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image033.png]]           [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image034.png]]
--(% style="color:blue" %)**(4) Click the comms.**
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]]   [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]]
--[[image:image-20221130104310-7.png||height="376" width="835"]]
--(% class="wikigeneratedid" id="HRunRS485-LN2FBLcommandandmonitorifitiscorrect." %)
--**Run RS485-LN/BL command and monitor if it is correct.**
++1.
++11. How to change the LoRa Frequency Bands/Region?
++User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
--=== 6.7.4 Example – Test the CFGDEV command ===
--RS485-LN sent below command:
++1.
++11. How many RS485-Slave can RS485-BL connects?
--(% style="color:blue" %)**AT+CFGDEV=01 03 00 20 00 01,1**(%%) to RS485 network, and PC is able to get this command and return commands from MTU to show in the serial tool.
++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>>path:#downlink_A8]].
--We can see the output from the Serial port tool to analyze. And check if they are expected result.
--[[image:image-20221130104310-8.png||height="214" width="797"]]
++1. Trouble Shooting
++11. Downlink doesn’t work, how to solve it?
--We can also use (% style="color:blue" %)**ModRSsim2**(%%) to see the output.
++Please see this link for debug:
--[[image:image-20221130104310-9.png||height="531" width="729"]]
++[[http:~~/~~/wiki.dragino.com/index.php?title=Main_Page#LoRaWAN_Communication_Debug>>url:http://wiki.dragino.com/index.php?title=Main_Page#LoRaWAN_Communication_Debug]]
--=== 6.7.5 Example – Test CMD command sets. ===
++1.
++11. Why I can’t join TTN V3 in US915 /AU915 bands?
--Run (% style="color:blue" %)**AT+SENSORVALUE=1**(%%) to test the CMD commands set in RS485-LN.
++It might about the channels mapping. Please see for detail.
++[[http:~~/~~/wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band>>url:http://wiki.dragino.com/index.php?title=LoRaWAN_Communication_Debug#Notice_of_US915.2FCN470.2FAU915_Frequency_band]]
--(% style="color:blue" %)**Serial port tool:**
--[[image:image-20221130104310-10.png||height="339" width="844"]]
++1. Order Info
--(% style="color:blue" %)**ModRSsim2:**
++**Part Number: RS485-BL-XXX**
--[[image:image-20221130104310-11.png||height="281" width="962"]]
++**XXX:**
++* **EU433**: frequency bands EU433
++* **EU868**: frequency bands EU868
++* **KR920**: frequency bands KR920
++* **CN470**: frequency bands CN470
++* **AS923**: frequency bands AS923
++* **AU915**: frequency bands AU915
++* **US915**: frequency bands US915
++* **IN865**: frequency bands IN865
++* **RU864**: frequency bands RU864
++* **KZ865: **frequency bands KZ865
--=== 6.7.6 Test with PC ===
++1. Packing Info
--
--If there is still have problem to set up correctly the commands between RS485-LN and MTU. User can test the correct RS485 command set in PC and compare with the RS485 command sent out via RS485-LN. as long as both commands are the same, the MTU should return correct result.
--
--
--Or User can send the working commands set in PC serial tool to Dragino Support to check what should be configured in RS485-LN.
--
--(% style="color:blue" %)**Connection method：**
--
--[[image:image-20221130104310-12.png]]
--
--
--(% style="color:blue" %)**Link situation:**
--
--[[image:image-20221130104310-13.png||height="458" width="486"]]
--
--
--[[image:image-20221130104310-14.png||height="371" width="823"]]
--
--
--== 6.8 Where to get the decoder for RS485-LN? ==
--
--
--The decoder for RS485-LN needs to be written by yourself. Because the sensor to which the user is connected is custom, the read device data bytes also need custom parsing, so there is no universal decoder. We can only provide [[templates>>https://github.com/dragino/dragino-end-node-decoder/tree/main/RS485-LN]] for decoders (no intermediate data parsing part involved)
--
--
--= 7. Trouble Shooting =
--
--== 7.1 Downlink doesn't work, how to solve it? ==
--
--
--Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
--
--
--== 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
--
--
--It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
--
--
--= 8. Order Info =
--
--
--(% style="color:blue" %)**Part Number: RS485-LN-XXX**
--
--(% style="color:blue" %)**XXX:**
--
--* (% style="color:red" %)**EU433**(%%):  frequency bands EU433
--* (% style="color:red" %)**EU868**(%%):  frequency bands EU868
--* (% style="color:red" %)**KR920**(%%):  frequency bands KR920
--* (% style="color:red" %)**CN470**(%%):  frequency bands CN470
--* (% style="color:red" %)**AS923**(%%):  frequency bands AS923
--* (% style="color:red" %)**AU915**(%%):  frequency bands AU915
--* (% style="color:red" %)**US915**(%%):  frequency bands US915
--* (% style="color:red" %)**IN865**(%%):   frequency bands IN865
--* (% style="color:red" %)**RU864**(%%):  frequency bands RU864
--* (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
--
--= 9. Packing Info =
--
--
  **Package Includes**:
--* RS485-LN x 1
++* RS485-BL x 1
  * Stick Antenna for LoRa RF part x 1
  * Program cable x 1
@@ -1791,67 +1791,9 @@
  * Package Size / pcs : 14.5 x 8 x 5 cm
  * Weight / pcs : 170g
--= 10. FCC Caution for RS485LN-US915 =
++1. Support
++* 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.
++* 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
--(((
--Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
--)))
--
--(((
--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.
--)))
--
--(((
--
--)))
--
--(((
--(% style="color:red" %)**IMPORTANT NOTE:**
--)))
--
--(((
--(% style="color:red" %)**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:
--)))
--
--(((
--—Reorient or relocate the receiving antenna.
--)))
--
--(((
--—Increase the separation between the equipment and receiver.
--)))
--
--(((
--—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
--)))
--
--(((
--—Consult the dealer or an experienced radio/TV technician for help.
--)))
--
--(((
--
--)))
--
--(((
--(% style="color:red" %)**FCC Radiation Exposure Statement:**
--)))
--
--(((
--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.
--)))
--
--
--= 11. Support =
--
--
--* (((
--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.
--)))
--* (((
--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]].
--
--
--
--)))
++[[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]

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