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

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

From 35.1 to 34.1 From 121.3 to 121.2

From version 121.2

edited by Mengting Qiu
on 2024/09/25 16:13

Change comment: There is no comment for this version

To version 35.1

edited by Xiaoling
on 2022/06/02 15:36

Change comment: Uploaded new attachment "image-20220602153621-3.png", version {1}

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Title

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

Author

@@ -1,1 +1,1 @@
--XWiki.ting
++XWiki.Xiaoling

Content

@@ -1,44 +1,28 @@
--(% 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, building automation, and so on.
++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.
  )))
  (((
@@ -47,33 +47,31 @@
  (((
  (% 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.
--)))
--(((
  (% 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]]
  )))
++)))
++[[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 ==
--(% style="color:#037691" %)**Hardware System:**
++**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 +92,14 @@
  * 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 ==
++== 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
@@ -106,9 +106,10 @@
  * Support Modbus protocol
  * Support Interrupt uplink (Since hardware version v1.2)
--== 1.4 Applications ==
++== 1.4 Applications ==
++
  * Smart Buildings & Home Automation
  * Logistics and Supply Chain Management
  * Smart Metering
@@ -116,35 +116,21 @@
  * Smart Cities
  * Smart Factory
--== 1.5 Firmware Change log ==
++== 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
--)))
--
--== 1.7 Pin Definitions ==
--
--
--The following diagram shows the V1.2 hardware version.
--
--[[image:image-20240925161141-1.jpeg||height="412" width="405"]]
--
--[[image:image-20240925161157-2.jpeg||height="367" width="545"]]
--
  )))
  )))
@@ -151,7 +151,6 @@
  = 2. Power ON Device =
--
  (((
  The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
@@ -162,7 +162,7 @@
  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]]
  )))
@@ -171,11 +171,8 @@
  == 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.
--)))
  )))
@@ -182,13 +182,11 @@
  == 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:
@@ -196,21 +196,16 @@
  (((
 A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
--
--
  )))
--(% 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" %)
++[[image:1653268227651-549.png||height="592" width="720"]]
--
  (((
--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.
  )))
  (((
@@ -218,133 +218,106 @@
  )))
  )))
--(% 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-20230425175410-2.png]](% 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 Device to Read RS485 Sensors ==
++== 3.3 Configure Commands to read data ==
--
--There are plenty of RS485 and TTL level devices in the market and each device has different commands to read the valid data. To support these devices in most flexible, RS485-LN supports flexible command set. User can use [[Dragino RS485 Tool>>url:https://www.dropbox.com/sh/us9qecn39fwt8n1/AABREdqUCzEmJMRrfuWuXasoa?dl=0]],  [[AT Commands or LoRaWAN Downlink>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LB_Waterproof_RS485UART_to_LoRaWAN_Converter/#H3.5ConfigureRS485-LBviaATorDownlink]] Command to configure how RS485-LN should read the sensor and how to handle the return from RS485 or TTL sensors.
--
--
  (((
  (((
--(((
--(% 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**
++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
--=== 3.3.1 Method 1 ~-~- via RS485 Configure Tool ===
--
--
--Use the RS485 Configure tool is the recommand method. Please see the instruction of how to use the tool:
--
--* **[[RS485 Configure Tool Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/RS485_Configure_Tool/]]**
--
--[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LB_Waterproof_RS485UART_to_LoRaWAN_Converter/WebHome/image-20231127144411-1.png?width=494&height=368&rev=1.1||alt="image-20231127144411-1.png" height="368" width="494"]]
--
--
--=== 3.3.2  Method 2 ~-~- via AT Commands ===
++
  )))
  )))
--==== 3.3.2.1 Configure UART settings for RS485 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:
--To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. The related commands for UART settings are:
--
--(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
--|=(% style="width: 126px; background-color:#4F81BD;color:white" %)(((
++(% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
++|(% style="width:128px" %)(((
  **AT Commands**
--)))|=(% style="width: 187px; background-color:#4F81BD;color:white" %)(((
++)))|(% style="width:305px" %)(((
  **Description**
--)))|=(% style="width: 197px;background-color:#4F81BD;color:white" %)(((
++)))|(% style="width:346px" %)(((
  **Example**
  )))
--|(% style="width:126px" %)(((
--
--
--(((
++|(% style="width:128px" %)(((
  AT+BAUDR
--)))
--)))|(% style="width:177px" %)(((
++)))|(% style="width:305px" %)(((
  Set the baud rate (for RS485 connection). Default Value is: 9600.
--)))|(% style="width:193px" %)(((
++)))|(% style="width:346px" %)(((
  (((
  AT+BAUDR=9600
  )))
  (((
--Options: (1200,2400,4800,
--14400,19200,115200)
++Options: (1200,2400,4800,14400,19200,115200)
  )))
  )))
--|(% style="width:126px" %)(((
++|(% style="width:128px" %)(((
  AT+PARITY
--)))|(% style="width:177px" %)(((
++)))|(% style="width:305px" %)(((
  Set UART parity (for RS485 connection)
--)))|(% style="width:193px" %)(((
++)))|(% style="width:346px" %)(((
  (((
  AT+PARITY=0
  )))
  (((
--Option: 0: no parity,
--1: odd parity,
--2: even parity
++Option: 0: no parity, 1: odd parity, 2: even parity
  )))
  )))
--|(% style="width:126px" %)(((
++|(% style="width:128px" %)(((
  AT+STOPBIT
--)))|(% style="width:177px" %)(((
++)))|(% style="width:305px" %)(((
  (((
  Set serial stopbit (for RS485 connection)
  )))
--)))|(% style="width:193px" %)(((
++
  (((
++
++)))
++)))|(% style="width:346px" %)(((
++(((
  AT+STOPBIT=0 for 1bit
  )))
@@ -357,1519 +357,910 @@
  )))
  )))
--=== 3.3.3 Configure sensors ===
++=== 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="4" style="background-color:#f2f2f2; width:510px" %)
--|=(% style="width: 122px; background-color:#4F81BD;color:white" %)**AT Commands**|=(% style="width: 198px; background-color:#4F81BD;color:white" %)**Description**|=(% style="width: 190px;background-color:#4F81BD;color:white" %)**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
--=== 3.3.4 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.
++=== 3.3.3 Configure read commands for each sampling ===
--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**
--)))
--
--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.
--
--
--If a single command exceeds 14 bytes, you can use the command splicing function.
--
--When AT+CMDDLx=1, the commands of AT+COMMANDx and AT+COMMAND(x+1) will be merged.
--
--
--**Examples:** To send 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F data it should be configured:
--
--                    AT+COMMAND1=00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D,0
--
--                    AT+COMMAND1=1
--
--                    AT+COMMAND2=0E 0F,0
--
--
--(% 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.  **
--)))
--
--**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" %)
--
--
--)))
--
--=== 3.3.5 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.**
--
--
++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.
  )))
  (((
--(% style="color:#037691" %)**Examples: AT+DATAUP=0**
--
--
++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.
  )))
  (((
--Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
++To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
  )))
  (((
--Final Payload is (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
++This section describes how to achieve above goals.
  )))
  (((
--Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
--
--
++During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
  )))
--[[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" %)
--
--
--=== 3.3.6 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.
--
--
--=== 3.3.7 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="4" style="background-color:#f2f2f2; width:510px" %)
--|(% style="background-color:#4f81bd; color:white; width:70px" %)(((
--**Size(bytes)**
--)))|(% style="background-color:#4f81bd; color:white; width:80px" %)**1**|(% style="background-color:#4f81bd; color:white; 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"]](%%)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
++**Command from RS485-BL to Sensor:**
  )))
  (((
--There are two kinds of Commands:
++RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
  )))
--* (((
--(% 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]]
--)))
--
--* (((
--(% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
--)))
--
  (((
--
++**Handle return from sensors to RS485-BL**:
  )))
--
--=== 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**.
++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:#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+DATACUT**
  )))
  (((
--Format: (% style="color:#4472c4" %)** A8 MM NN XX XX XX XX YY**
++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.
  )))
--(((
--Where:
--)))
--
  * (((
--MM: 1: add CRC-16/MODBUS ; 0: no CRC
++**AT+SEARCH**
  )))
--* (((
--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-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)
++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.
  )))
  (((
--To connect a Modbus Alarm with below commands.
++**Define wait timeout:**
  )))
--* (((
--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.
--)))
--
  (((
--
--
--So if user want to use downlink command to control to RS485 Alarm, he can use:
++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
  )))
  (((
--(% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
++After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
  )))
--(((
--(% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
--)))
++**Examples:**
--(((
--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.
--)))
++Below are examples for the how above AT Commands works.
--(((
--
--)))
++**AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
--(((
--(% style="color:blue" %)**Example 2:**  (%%)
--)))
++(% border="1" class="table-bordered" %)
++|(((
++**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
--(((
--Check TTL Sensor return:
--)))
++**xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
--(((
--(((
--[[image:http://8.211.40.43/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/test/WebHome/1654132684752-193.png?rev=1.1||alt="1654132684752-193.png"]](% title="Click and drag to resize" %)
++**m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
  )))
--)))
--
--
--==== (% style="color:blue" %)**Set Payload version**(%%) ====
--
--
  (((
--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.
++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.
  )))
  (((
--* (% style="color:#037691" %)**AT Command:**
--
--(% style="color:#4472c4" %)** AT+PAYVER:    ** (%%) Set PAYVER field = 1
--
--
++In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
  )))
--* (((
--(% style="color:#037691" %)**Downlink Payload:**
--)))
--
  (((
--(% style="color:#4472c4" %)** 0xAE 01** (%%)   ~-~->     Set PAYVER field =  0x01
++**AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
  )))
--(((
--(% style="color:#4472c4" %)** 0xAE 0F**   (%%) ~-~->     Set PAYVER field =  0x0F
--)))
++(% border="1" class="table-bordered" %)
++|(((
++**AT+SEARCHx=aa,xx xx xx xx xx**
++* **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**
--**1 )  Add the interrupt flag at the highest bit of the Payver byte, that is, Byte7 of the first byte. (Since v1.4.0)**
--
--
--[[image:image-20220824145428-2.png||height="168" width="1300"]]
--
--
--
--**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.**
--
--
--[[image:image-20220824145428-3.png||height="308" width="1200"]]
--
--
--
--==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
--
--
--(((
--AT+COMMANDx or AT+DATACUTx
--)))
--
--(((
--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"]].
--)))
--
--(((
  )))
--* (((
--(% style="color:#037691" %)**AT Command:**
--)))
++**Examples:**
--(% style="color:#4472c4" %)** AT+COMMANDx:    ** (%%) Configure RS485 read command to sensor.
++~1. For a return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
--(% style="color:#4472c4" %)** AT+DATACUTx:        **(%%)  Configure how to handle return from RS485 devices.
++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**
--* (((
--(% style="color:#037691" %)**Downlink Payload:**
--)))
++[[image:1653269403619-508.png]]
--(((
--(% style="color:#4472c4" %)** 0xAF**(%%)  downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
++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
--(((
--(% style="color:red" %)**Note : if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
++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**
--
--)))
++[[image:1653269438444-278.png]]
--(((
--Format: (% style="color:#4472c4" %)** AF MM NN LL XX XX XX XX YY**
--)))
++**AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
--(((
--Where:
--)))
++|(((
++**AT+DATACUTx=a,b,c**
--* (((
--MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
++* **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.  **
  )))
--* (((
--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.
--)))
--(((
--
++Examples:
--**Example:**
--)))
++* Grab bytes:
--(((
--(% 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
--)))
++[[image:1653269551753-223.png||height="311" width="717"]]
--(((
--(% 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**
--)))
++* Grab a section.
--(((
--(% 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**
--)))
++[[image:1653269568276-930.png||height="325" width="718"]]
++* Grab different sections.
++[[image:1653269593172-426.png||height="303" width="725"]]
--==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
++(% style="color:red" %)**Note:**
++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.
--(((
--(% 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]].
--)))
++Example:
--(((
--This command is valid since v1.3 firmware version
--)))
++(% style="color:red" %)AT+COMMAND1=11 01 1E D0,0
--(((
--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.
--)))
++(% style="color:red" %)AT+SEARCH1=1,1E 56 34
--(((
--
--)))
++(% style="color:red" %)AT+DATACUT1=0,2,1~~5
--(((
--**Example:**
--)))
++(% style="color:red" %)Return string from AT+COMMAND1: 16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
--* (((
--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.
++(% style="color:red" %)String after SEARCH command: 2e 30 58 5f 36 41 30 31 00 49
--
--)))
++(% style="color:red" %)Valid payload after DataCUT command: 2e 30 58 5f 36
--(% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]]
++[[image:1653269618463-608.png]]
--(% title="Click and drag to resize" %)
++=== 3.3.4 Compose the uplink payload ===
--(% 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" %)
--
--* (((
--(% style="color:#037691" %)**Downlink Command:**
--)))
--
--**~ (% style="color:#4472c4" %)A9 aa(%%)** ~-~-> Same as AT+MBFUN=aa
--
--
--==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
--
--
  (((
--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.
++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.**
  )))
  (((
--Default value: 0, range:  0 ~~ 65 seconds
++(% style="color:#4f81bd" %)**Examples: AT+DATAUP=0**
  )))
  (((
--* (% style="color:#037691" %)** AT Command:**
--
--(% style="color:#4472c4" %)** AT+CMDDLaa=hex(bb cc)*1000**
++Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
  )))
  (((
--
--
--**Example:**
++Final Payload is
  )))
  (((
--(% style="color:#4472c4" %)** AT+CMDDL1=1000** (%%)to send the open time to 1000ms
++(% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
  )))
  (((
--
++Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
  )))
--* (((
--(% style="color:#037691" %)** Downlink Payload:**
--)))
++[[image:1653269759169-150.png||height="513" width="716"]]
--(((
--(% style="color:#4472c4" %)** 0x AA aa bb cc**(%%) Same as: AT+CMDDLaa=hex (bb cc)
--)))
++(% style="color:#4f81bd" %)**Examples: AT+DATAUP=1**
--(((
--
++Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
--**Example:**
--)))
++Final Payload is
--(((
--**0xAA 01 03 E8**    ~-~-> Same as  **AT+CMDDL1=1000 ms**
--)))
++(% 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
++[[image:1653269916228-732.png||height="433" width="711"]]
--==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
++So totally there will be 3 uplinks for this sampling, each uplink includes 6 bytes DATA
--(((
--Define to use one uplink or multiple uplinks for the sampling.
--)))
++DATA1=RETURN1 Valid Value = (% style="background-color:green; color:white" %)20 20 0a 33 90 41
--(((
--The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
++DATA2=1^^st^^ ~~ 6^^th^^ byte of Valid value of RETURN10=(% style="background-color:green; color:white" %) 02 aa 05 81 0a 20
--
--)))
++DATA3=7^^th^^ ~~ 11^^th^^ bytes of Valid value of RETURN10 = (% style="background-color:green; color:white" %)20 20 20 2d 30
--(((
--* (% style="color:#037691" %)** AT Command:**
++Below are the uplink payloads:
--(% style="color:#4472c4" %)** AT+DATAUP=0**
++[[image:1653270130359-810.png]]
--(% style="color:#4472c4" %)** AT+DATAUP=1**
--
--)))
++(% style="color:red" %)**Notice: the Max bytes is according to the max support bytes in different Frequency Bands for lowest SF. As below:**
--(% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%)  **~-~->** Same as AT+DATAUP=1，20000   ~/~/  (00 00 14 is 20 seconds)
++   ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink ( so 51 -5 = 46 max valid date)
--Each uplink is sent to the server at 20-second intervals when segmented.
++   * For AU915/AS923 bands, if UplinkDwell time=1, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
++   * For US915 band, max 11 bytes for each uplink ( so 11 -5 = 6 max valid date).
--* (((
--(% style="color:#037691" %)** Downlink Payload:**
--)))
++   ~* For all other bands: max 51 bytes for each uplink  ( so 51 -5 = 46 max valid date).
--(% style="color:#4472c4" %)** 0xAD 00** (%%)  **~-~->** Same as AT+DATAUP=0
++=== 3.3.5 Uplink on demand ===
--(% 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.
++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.
++Downlink control command:
--(Since firmware v1.4.0)
++[[0x08 command>>path:#downlink_08]]: Poll an uplink with current command set in RS485-BL.
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++[[0xA8 command>>path:#downlink_A8]]: Send a command to RS485-BL and uplink the output from sensors.
--(% style="color:#4472c4" %)** AT+DATAUP=1,Timeout**
--* (((
--(% style="color:#037691" %)** Downlink Payload:**
--)))
++1.
++11.
++111. Uplink on Interrupt
--(% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%)  **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
++Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
--Each uplink is sent to the server at 20-second intervals when segmented.
++AT+INTMOD=0  Disable Interrupt
++AT+INTMOD=1  Interrupt trigger by rising or falling edge.
--==== (% style="color:blue" %)**Cut data separation processing(Since Version 1.4.2)**(%%) ====
++AT+INTMOD=2  Interrupt trigger by falling edge. ( Default Value)
++AT+INTMOD=3  Interrupt trigger by rising edge.
--AT+NEWLINE command, which only takes effect when AT+DATAUP=1 or AT+DATAUP=1, timeout.
--When not set, each part of AT+DATAUP is sent according to the maximum number of bytes of DR.
++1.
++11. Uplink Payload
--When setting, each part of AT+DATAUP is sent according to the value set by AT+NEWLINE.
++|**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
++|Value|(((
++Battery(mV)
++&
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++Interrupt _Flag
++)))|(((
++PAYLOAD_VER
--(% style="color:#4472c4" %)//**AT+NEWLINE=ALL**//(%%)//   //The data cut out by each AT+COMMANDx command is sent separately as an uplink.
++
++)))|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" %)//**AT+NEWLINE=ALL**//(%%)//   equal：  (% style="color:#4472c4" %)**AT+NEWLINE=1+2+3+4+5+6+7+8+9+10+11+12+13+14+15**//
++Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
--(% style="color:#4472c4" %)//**AT+NEWLINE=a+b+c**//(%%)//  //The data returned by all commands is divided into three parts, COMMAND(1~~a) is the first part, COMMAND(a+1~~b) is the second part,COMMAND(b+1~~c) is the third part.
++function Decoder(bytes, port) {
++~/~/Payload Formats of RS485-BL Deceive
--(% style="color:#4472c4" %)//**AT+NEWLINE=NULL**//(%%)//  //Turn off the functionality of this AT command.
++return {
++    ~/~/Battery,units:V
--* (((
--(% style="color:#037691" %)** Downlink Payload:**
--)))
++    BatV:((bytes[0]<<8 | bytes[1])&0x7fff)/1000,
--//AT+NEWLINE=ALL         ~-~-->      (% style="color:#4472c4" %)**0xAC 01**//
++    ~/~/GPIO_EXTI
--// AT+NEWLINE= NULL    ~-~-->      (% style="color:#4472c4" %)**0xAC 00**//
++    EXTI_Trigger:(bytes[0] & 0x80)? "TRUE":"FALSE",
--//AT+NEWLINE= a+b+c   ~-~-->      (% style="color:#4472c4" %)**0xAC  number of bytes  a  b  c**//
++    ~/~/payload of version
--//AT+NEWLINE= 1+5+15 ~-~-->     (% style="color:#4472c4" %)**0xAC 03 01 05 0F**//
++    Pay_ver:bytes[2],
++    };
--==== (% 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.
--)))
--(((
--
--)))
--* (((
--(% style="color:#037691" %)** Downlink Payload:**
--)))
--(((
--(% style="color:#4472c4" %)** 0x08 FF**(%%), RS485-LN will immediately send an uplink.
--)))
++TTN V3 uplink screen shot.
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
++1.
++11. Configure RS485-BL via AT or Downlink
--==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
++User can configure RS485-BL via [[AT Commands >>path:#_Using_the_AT]]or LoRaWAN Downlink Commands
++There are two kinds of Commands:
--(((
--The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
++* **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
--
--)))
++* **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++1.
++11.
++111. Common Commands:
--(((
--(% style="color:#4472c4" %)** AT+CMDEAR=mm,nn** (%%)  mm: start position of erase ,nn: stop position of erase
--)))
++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]]
--(((
--
--Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
--)))
++1.
++11.
++111. Sensor related commands:
--(((
--Example screen shot after clear all RS485 commands.
--)))
++==== 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.
--(((
--The uplink screen shot is:
--)))
++* AT Command
--(% 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" %)
++**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.
--* (((
--(% style="color:#037691" %)** Downlink Payload:**
--)))
--(((
--(% style="color:#4472c4" %)** 0x09 aa bb** (%%) same as AT+CMDEAR=aa,bb
--)))
++* Downlink Payload
++**0A aa**     à same as AT+MOD=aa
--==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
++==== [[RS485 Debug Command>>path:#downlink_A8]] (AT+CFGDEV) ====
--(((
--Set the Rs485 serial communication parameters:
--)))
++This command is used to configure the RS485 or TTL sensors; they won’t be used during sampling.
--(((
--(% style="color:#037691" %)**AT Command:**
--)))
++* AT Command
--(((
--* Set Baud Rate
--)))
++AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
--(% 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
++m: 0: no CRC; 1: add CRC-16/MODBUS in the end of this command.
--(((
--* Set UART Parity
--)))
--(% style="color:#4472c4" %)**       AT+PARITY=0** (%%)   ~/~/  Option: 0: no parity, 1: odd parity, 2: even parity
++* Downlink Payload
++Format: A8 MM NN XX XX XX XX YY
--(((
--* Set STOPBIT
--)))
++Where:
--(% style="color:#4472c4" %)**        AT+STOPBIT=0** (%%)   ~/~/  Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
++* 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:**
--(((
--(% style="color:#037691" %)**Downlink Payload:**
--)))
++To connect a Modbus Alarm with below commands.
--(((
--(% style="color:#4472c4" %)**     A7 01 aa bb**:   (%%)  Same  AT+BAUDR=hex(aa bb)*100
--)))
++* 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.
--(((
--**Example:**
--)))
++* 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.
--* (((
--A7 01 00 60     same as AT+BAUDR=9600
--)))
--* (((
--A7 01 04 80     same as AT+BAUDR=115200
--)))
++So if user want to use downlink command to control to RS485 Alarm, he can use:
--(((
--* A7 02 aa:    Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
--)))
++**A8 01 06 0A 05 00 04 00 01 00**: to activate the RS485 Alarm
--(((
--* A7 03 aa:    Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
--)))
++**A8 01 06 0A 05 00 04 00 00 00**: to deactivate the RS485 Alarm
++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.
++**Example 2:**
--==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.0)**(%%) ====
++Check TTL Sensor return:
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.png]]
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
--(% style="color:#4472c4" %)** AT+DATABIT=7    **(%%)~/~/ Set the data bits to 7
--(% style="color:#4472c4" %)** AT+DATABIT=8    **(%%)~/~/ Set the data bits to 8
--* (((
--(% style="color:#037691" %)**Downlink Payload:**
--)))
++==== Set Payload version ====
--(% style="color:#4472c4" %)** A7 04 07**(%%): Same as  AT+DATABIT=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" %)** A7 04 08**(%%): Same as  AT+DATABIT=8
++* AT Command:
++AT+PAYVER: Set PAYVER field = 1
--==== (% style="color:blue" %)**Encrypted payload(Since Version 1.4.0)**(%%) ====
++* Downlink Payload:
--(((
--
--)))
++0xAE 01   à Set PAYVER field =  0x01
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++0xAE 0F   à Set PAYVER field =  0x0F
--(% style="color:#4472c4" %)** AT+DECRYPT=1  ** (%%)  ~/~/ The payload is uploaded without encryption
--(% style="color:#4472c4" %)** AT+DECRYPT=0  ** (%%)  ~/~/ Encrypt when uploading payload (default)
++==== Set RS485 Sampling Commands ====
++AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
++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:blue" %)**Get sensor value(Since Version 1.4.0)**(%%) ====
++* AT Command:
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++AT+COMMANDx: Configure RS485 read command to sensor.
--(% style="color:#4472c4" %)** AT+GETSENSORVALUE=0  **(%%)  ~/~/ The serial port gets the reading of the current sensor
++AT+DATACUTx: Configure how to handle return from RS485 devices.
--(% style="color:#4472c4" %)** AT+GETSENSORVALUE=1  **(%%)  ~/~/ The serial port gets the current sensor reading and uploads it.
++AT+SEARCHx: Configure search command
++* Downlink Payload:
--==== (% style="color:blue" %)**Resets the downlink packet count(Since Version 1.4.0)**(%%) ====
++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.
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++Format: AF MM NN LL XX XX XX XX YY
--(% 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)
++Where:
--(% 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.
++* 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.
++Example:
++**AF 03 01 06 0A 05 00 04 00 01 00**: Same as AT+COMMAND3=0A 05 00 04 00 01,1
--==== (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches(Since Version 1.4.0)**(%%) ====
++**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:#037691" %)** AT Command:**
--)))
-- (% 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)
++0xAB downlink command can be used for set AT+SEARCHx
-- (% 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.
++Example: **AB aa 01 03 xx xx xx** (03 here means there are total 3 bytes after 03) So
++* 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:#037691" %)** Downlink Payload:**
--)))
++**AB aa 02 03 xx xx xx 02 yy yy**  same as **AT+SEARCHaa=2,xx xx xx+yy yy**
--(% style="color:#4472c4" %)** 0x21 00 01 **  (%%)       ~/~/ Set  the DISMACANS=1
++==== Fast command to handle MODBUS device ====
++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:blue" %)**Copy downlink to uplink (Since Version 1.4.0)**(%%) ====
++This command is valid since v1.3 firmware version
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++AT+MBFUN has only two value:
--(% 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.
++* AT+MBFUN=1: Enable Modbus reading. And get response base on the MODBUS return
--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, 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.
++* AT+MBFUN=0: Disable Modbus fast reading.
--[[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"]]
++Example:
--For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
++* 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-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.png]]
--For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
++* Downlink Commands:
++A9 aa -à Same as AT+MBFUN=aa
--==== (% style="color:blue" %)**Query version number and frequency band 、TDC(Since Version 1.4.0)**(%%) ====
++==== RS485 command timeout ====
--(((
--* (% style="color:#037691" %)**Downlink Payload:**
++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:#4472c4" %)** 26 01  ** (%%) ~/~/   Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
--)))
++Default value: 0, range:  0 ~~ 5 seconds
--Example：
++* AT Command:
++AT+CMDDLaa=hex(bb cc)
--[[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"]]
++Example:
++**AT+CMDDL1=1000** to send the open time to 1000ms
--==== (% style="color:blue" %)** Monitor RS485 communication of other devices(Since Version 1.4.0)**(%%) ====
++* Downlink Payload:
++0x AA aa bb cc
--* (((
--(% style="color:#037691" %)** AT Command:**
--)))
++Same as: AT+CMDDLaa=hex(bb cc)
--(% 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.
++   Example:
--(% 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.
++   0xAA 01 03 E8  à Same as **AT+CMDDL1=1000 ms**
--(% style="color:#4472c4" %)**AT+RXMODE=0,0  **    (%%)    ~/~/  Disable this mode (default)
++==== [[Uplink>>path:#downlink_A8]] payload mode ====
--* (((
--(% style="color:#037691" %)**Downlink Payload:**
--)))
++Define to use one uplink or multiple uplinks for the sampling.
--(% style="color:#4472c4" %)** A6 aa bb bb               ** (%%)  ~/~/ same as AT+RXMODE=aa,bb
++The use of this command please see: [[Compose Uplink payload>>path:#DataUP]]
--[[image:image-20220824144240-1.png]]
++* AT Command:
++AT+DATAUP=0
--== 3.6 Listening mode for RS485 network ==
++AT+DATAUP=1
--(((
--This feature support since firmware v1.4
--)))
++* Downlink Payload:
--(((
--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.
++0xAD 00   à Same as AT+DATAUP=0
--
--)))
++0xAD 01   à Same as AT+DATAUP=1
--(% 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"]]
--(% title="Click and drag to resize" %)
++==== Manually trigger an Uplink ====
--(((
--To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
--)))
++Ask device to send an uplink immediately.
--(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
--|=(% style="width: 156px; background-color:#4F81BD;color:white" %)(((
--**Command example**
--)))|=(% style="width: 355px; background-color:#4F81BD;color:white" %)(((
--**Function**
--)))
--|(% style="width:156px" %)(((
--AT+RXMODE=1,10
--)))|(% style="width:352px" %)(((
--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:156px" %)(((
--AT+RXMODE=2,500
--)))|(% style="width:352px" %)(((
--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:156px" %)(((
--AT+RXMODE=0,0
--)))|(% style="width:352px" %)(((
--Disable listening mode. This is the default settings.
--)))
--|(% style="width:156px" %)(((
--
--)))|(% style="width:352px" %)(((
--A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
--)))
++* Downlink Payload:
--(((
--
++0x08 FF, RS485-BL will immediately send an uplink.
--(% style="color:#037691" %)**Downlink Command:**
--)))
--(((
--(% style="color:#4472c4" %)** 0xA6 aa bb cc **(%%) same as AT+RXMODE=aa,(bb<<8 | cc)
--)))
++==== Clear RS485 Command ====
--(((
--
--)))
++The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
--(((
--**Example**:
--)))
--(((
--The RS485-LN is set to AT+RXMODE=2,1000
--)))
++* AT Command:
--(((
--There is a two Modbus commands in the RS485 network as below:
--)))
++**AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
--(((
--The Modbus master send a command: (% style="background-color:#ffc000" %)**01 03 00 00 00 02 c4 0b**
--)))
++Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
--(((
--And Modbus slave reply with: (% style="background-color:green" %)**01 03 04 00 00 00 00 fa 33**
--)))
++Example screen shot after clear all RS485 commands.
--(((
--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**
--
--)))
--(((
--(% 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" %)
--)))
++The uplink screen shot is:
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image023.png]]
--(((
--(% 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.**
--)))
++* Downlink Payload:
++0x09 aa bb  same as AT+CMDEAR=aa,bb
--== 3.7 Buttons ==
++==== Set Serial Communication Parameters ====
--(% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
--|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**Button**|=(% style="width: 380px;background-color:#4F81BD;color:white" %)**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"]]
++Set the Rs485 serial communication parameters:
--== 3.8 LEDs ==
++* AT Command:
++Set Baud Rate:
--(% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
--|=(% style="width: 50px;background-color:#4F81BD;color:white" %)**LEDs**|=(% style="width: 380px;background-color:#4F81BD;color:white" %)**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+BAUDR=9600    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
--= 4. Case Study =
++Set UART parity
--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+PARITY=0    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
--= 5. Use AT Command =
++Set STOPBIT
--== 5.1 Access AT Command ==
++AT+STOPBIT=0    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
--(((
--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.
++* Downlink Payload:
--
--)))
++A7 01 aa bb: Same  AT+BAUDR=hex(aa bb)*100
--(% 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" %)
++Example:
++* 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)
--(((
--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:
++A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
--
--)))
--(% 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" %)
++==== Control output power duration ====
++User can set the output power duration 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 Command:
++Example:
--== 5.2 Common AT Command Sequence ==
++AT+3V3T=1000 ~/~/ 3V3 output power will open 1s before each sampling.
--=== 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
++AT+5VT=1000 ~/~/ +5V output power will open 1s before each sampling.
--If device has not joined network yet:
++* LoRaWAN Downlink Command:
--* (% style="color:#037691" %)**AT+FDR**
--* (% style="color:#037691" %)**AT+NJM=0**
--* (% style="color:#037691" %)**ATZ**
++07 01 aa bb  Same as AT+5VT=(aa bb)
--(((
--
++07 02 aa bb  Same as AT+3V3T=(aa bb)
--If device already joined network:
--* (% style="color:#037691" %)**AT+NJM=0**
--* (% style="color:#037691" %)**ATZ**
--)))
++1.
++11. Buttons
--=== 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
++|**Button**|**Feature**
++|**RST**|Reboot RS485-BL
++1.
++11. +3V3 Output
--(% style="background-color:#dcdcdc" %)**AT+FDR** (%%)          Reset Parameters to Factory Default, Keys Reserve
++RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
--(% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)   Set to ABP mode
++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+ADR=0** (%%)   Set the Adaptive Data Rate Off
--(% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%)   Set Data Rate
++The +3V3 output time can be controlled by AT Command.
--(% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%)                 Set transmit interval to 60 seconds
++**AT+3V3T=1000**
--(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)          Set transmit frequency to 868.4Mhz
++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+RX2FQ=868400000** (%%)     Set RX2Frequency to 868.4Mhz (according to the result from server)
--(% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%)                    Set RX2DR to match the downlink DR from server. see below
++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+DADDR=26** (%%)                  01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
--(% style="background-color:#dcdcdc" %)**ATZ**       (%%)                                Reset MCU
++1.
++11. +5V Output
++RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
--(% style="color:red" %)**Note:**
++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="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
--
--)))
++The 5V output time can be controlled by AT Command.
--(% 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" %)
++**AT+5VT=1000**
++Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
--= 6. FAQ =
--== 6.1 How to upgrade the image? ==
++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.
--(((
--The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
--)))
--* (((
--Support new features
--)))
--* (((
--For bug fix
--)))
--* (((
--Change LoRaWAN bands.
--)))
--(((
--Below shows the hardware connection for how to upload an image to RS485-LN:
--)))
++1.
++11. LEDs
--(% 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"]]
++|**LEDs**|**Feature**
++|**LED1**|Blink when device transmit a packet.
--(% title="Click and drag to resize" %)
++1.
++11. Switch Jumper
--(((
--(% 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]].
++|**Switch Jumper**|**Feature**
++|**SW1**|(((
++ISP position: Upgrade firmware via UART
--
++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.
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image027.png]]
--(% style="color:red" %)**Users can select the new burning software STM32Cubeprogramer for firmware upgrade and follow the same connection steps to enter burning mode (until SYS LED is RED ON):**
--[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H4.2.FirmwareupgradeusingSTM32Cubeprogramer>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H4.2.FirmwareupgradeusingSTM32Cubeprogramer]]
++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:
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.png]]
--(% 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:**
--(% 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" %)
++More detail AT Command manual can be found at [[AT Command Manual>>path:#AT_COMMAND]]
--== 6.2 How to change the LoRa Frequency Bands/Region? ==
--User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
++1.
++11. Common AT Command Sequence
++111. Multi-channel ABP mode (Use with SX1301/LG308)
++If device has not joined network yet:
--== 6.3 How many RS485-Slave can RS485-LN connects? ==
++AT+FDR
++AT+NJM=0
--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"]].
++ATZ
--== 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
++If device already joined network:
++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"]]
++1.
++11.
++111. Single-channel ABP mode (Use with LG01/LG02)
++AT+FDR   Reset Parameters to Factory Default, Keys Reserve
--== 6.5 Can i use point to point communication for RS485-LN? ==
++AT+NJM=0 Set to ABP mode
++AT+ADR=0 Set the Adaptive Data Rate Off
--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]].
++AT+DR=5  Set Data Rate
++AT+TDC=60000  Set transmit interval to 60 seconds
--== 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
++AT+CHS=868400000 Set transmit frequency to 868.4Mhz
++AT+RX2FQ=868400000 Set RX2Frequency to 868.4Mhz (according to the result from server)
--[[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+RX2DR=5  Set RX2DR to match the downlink DR from server. see below
++AT+DADDR=26 01 1A F1 Set Device Address to 26 01 1A F1, this ID can be found in the LoRa Server portal.
--== 6.7 How to judge whether there is a problem with the set COMMAND ==
++ATZ          Reset MCU
--=== 6.7.1 Introduce: ===
++**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
--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:
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image029.png]]
--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.
--[[image:image-20240816112950-1.png||height="382" width="731"]]
++1. FAQ
++11. How to upgrade the image?
++The RS485-BL LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-BL to:
--Example Connection:
++* Support new features
++* For bug fix
++* Change LoRaWAN bands.
--[[image:image-20221130104310-2.png]]
++Below shows the hardware connection for how to upload an image to RS485-BL:
++[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.png]]
--=== 6.7.2 Set up PC to monitor RS485 network With Serial tool ===
++**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]].
++**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
--(% style="color:red" %)**Note: Receive and send set to hex mode**
++**Step3: **Open flashloader; choose the correct COM port to update.
--[[image:image-20221130104310-3.png||height="616" width="714"]]
++|(((
++HOLD PRO then press the RST button, SYS will be ON, then click next
++)))
--=== 6.7.3 With ModRSsim2: ===
++|(((
++Board detected
++)))
++|(((
++
++)))
--(% style="color:blue" %)**(1) Select serial port MODBUS RS-232**
++[[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]]
--[[image:image-20221130104310-4.png||height="390" width="865"]]
--(% style="color:blue" %)**(2) Click the serial port icon**
++[[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]]
--[[image:image-20221130104310-5.png||height="392" width="870"]]
++[[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]]
--(% style="color:blue" %)**(3) After selecting the correct serial port and baud rate, click ok**
--[[image:image-20221130104310-6.png]]
++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.
--(% style="color:blue" %)**(4) Click the comms.**
--[[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 many RS485-Slave can RS485-BL connects?
++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]].
--=== 6.7.4 Example – Test the CFGDEV command ===
--RS485-LN sent below command:
--(% 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.
++1. Trouble Shooting
++11. Downlink doesn’t work, how to solve it?
++Please see this link for debug:
--We can see the output from the Serial port tool to analyze. And check if they are expected result.
++[[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]]
--[[image:image-20221130104310-8.png||height="214" width="797"]]
--We can also use (% style="color:blue" %)**ModRSsim2**(%%) to see the output.
++1.
++11. Why I can’t join TTN V3 in US915 /AU915 bands?
--[[image:image-20221130104310-9.png||height="531" width="729"]]
++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]]
--=== 6.7.5 Example – Test CMD command sets. ===
--Run (% style="color:blue" %)**AT+SENSORVALUE=1**(%%) to test the CMD commands set in RS485-LN.
++1. Order Info
++**Part Number: RS485-BL-XXX**
--(% style="color:blue" %)**Serial port tool:**
++**XXX:**
--[[image:image-20221130104310-10.png||height="339" width="844"]]
++* **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
++1. Packing Info
--(% style="color:blue" %)**ModRSsim2:**
--
--[[image:image-20221130104310-11.png||height="281" width="962"]]
--
--
--=== 6.7.6 Test with PC ===
--
--
--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)
--
--
--== 6.9 How to configure RS485 commands more conveniently？ ==
--
--
--Dragino has developed an application for the RS485 series of products.
--
--It can help you configure RS485 sensors more conveniently
--Please refer to the link below for specific usage：
--
--[[RS485 Configure Tool - DRAGINO>>url:http://wiki.dragino.com/xwiki/bin/view/Main/RS485_Configure_Tool/#HTableofContentsFF1A]]
--
--
--= 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 customers 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"]]
--
--
--== 7.3 Why can't customers see the device's data in the server when the data is too long? ==
--
--This is due to the limitation of the lorawan protocol, and the fixed DR needs to be adjusted to improve this problem.
--
--Please refer to the following link for the number of bytes limited by different frequencies and different DRs in the lorawan protocol
--
--[[lora-alliance.org/wp-content/uploads/2021/05/RP002-1.0.3-FINAL-1.pdf>>url:https://lora-alliance.org/wp-content/uploads/2021/05/RP002-1.0.3-FINAL-1.pdf]]
--
--Example:
--
--[[image:image-20240620145456-1.png]]
--
--Please refer to the following command to fix DR
--
--AT+ADR=0
--
--AT+DR=3
--
--Downlink command:
--
--[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.4DataRate>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.4DataRate]]
--
--
--
--= 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
@@ -1880,67 +1880,9 @@
  * 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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