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

Last modified by Karry Zhuang on 2025/03/06 16:34

From version < 57.44 >

edited by Xiaoling
on 2022/06/06 10:12

To version < 43.1 >

edited by Xiaoling
on 2022/06/02 16:53

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@@ -6,18 +6,12 @@
  **RS485-LN – RS485 to LoRaWAN Converter User Manual**
--
--
  **Table of Contents:**
--{{toc/}}
--
--
--
  = 1.Introduction =
  == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
@@ -24,33 +24,23 @@
  (((
  (((
--(((
  The Dragino RS485-LN is a (% style="color:blue" %)**RS485 to LoRaWAN Converter**(%%). It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
  )))
--)))
  (((
--(((
  RS485-LN allows user to (% style="color:blue" %)**monitor / control RS485 devices**(%%) and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
  )))
--)))
  (((
--(((
  (% style="color:blue" %)**For data uplink**(%%), RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
  )))
--)))
  (((
--(((
  (% 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"]]
@@ -90,7 +90,7 @@
  * 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 ==
@@ -103,8 +103,6 @@
  * Support Modbus protocol
  * Support Interrupt uplink (Since hardware version v1.2)
--
--
  == 1.4 Applications ==
  * Smart Buildings & Home Automation
@@ -114,8 +114,6 @@
  * Smart Cities
  * Smart Factory
--
--
  == 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/]]
@@ -179,7 +179,7 @@
  [[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:
  )))
  (((
@@ -231,7 +231,7 @@
  (((
  (((
--There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>||anchor="H3.5ConfigureRS485-BLviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
++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.
  )))
  (((
@@ -436,7 +436,6 @@
  (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
--
 . PAYVER: Defined by AT+PAYVER
 . PAYLOAD COUNT: Total how many uplinks of this sampling.
 . PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
@@ -516,7 +516,7 @@
  There are two kinds of Commands:
--* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
++* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
@@ -536,8 +536,8 @@
  === 3.5.3 Sensor related commands ===
++====   ====
--
  ==== **RS485 Debug Command** ====
  This command is used to configure the RS485 devices; they won’t be used during sampling.
@@ -606,6 +606,7 @@
  **AT+PAYVER: Set PAYVER field = 1**
  )))
++
  * **Downlink Payload:**
  **0xAE 01**   ~-~-> Set PAYVER field =  0x01
@@ -616,9 +616,9 @@
  ==== **Set RS485 Sampling Commands** ====
--AT+COMMANDx or AT+DATACUTx
++AT+COMMANDx, AT+DATACUTx and AT+SEARCHx
--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"]].
++These three commands are used to configure how the RS485-BL polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
  * **AT Command:**
@@ -633,7 +633,12 @@
  **AT+DATACUTx: Configure how to handle return from RS485 devices.**
  )))
++(% class="box infomessage" %)
++(((
++**AT+SEARCHx: Configure search command**
++)))
++
  * **Downlink Payload:**
  **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
@@ -648,7 +648,7 @@
  * 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-LN will execute an uplink after got this 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:**
@@ -659,7 +659,17 @@
  (% 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**
++**0xAB** downlink command can be used for set AT+SEARCHx
++**Example:** **AB aa 01 03 xx xx xx** (03 here means there are total 3 bytes after 03) So
++
++* 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
++
++**AB aa 02 03 xx xx xx 02 yy yy**  same as **AT+SEARCHaa=2,xx xx xx+yy yy**
++
++
++
  ==== **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]].
@@ -666,32 +666,45 @@
  This command is valid since v1.3 firmware version
--AT+MBFUN can auto read the Modbus function code: 01, 02, 03 or 04. AT+MBFUN has lower priority vs AT+DATACUT command. If AT+DATACUT command is configured, AT+MBFUN will be ignore.
++**AT+MBFUN has only two value:**
++* **AT+MBFUN=1**: Enable Modbus reading. And get response base on the MODBUS return
++
++AT+MBFUN=1, device can auto read the Modbus function code: 01, 02, 03 or 04. AT+MBFUN has lower priority vs AT+DATACUT command. If AT+DATACUT command is configured, AT+MBFUN will be ignore.
++
++* **AT+MBFUN=0**: Disable Modbus fast reading.
++
  **Example:**
--* AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
++* 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:image-20220602165351-6.png]]
++[[image:1654133913295-597.png]]
--[[image:image-20220602165351-7.png]]
++[[image:1654133954153-643.png]]
++* **Downlink Commands:**
++
++**A9 aa** ~-~-> Same as AT+MBFUN=aa
++
++
++
  ==== **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.
++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.
--Default value: 0, range:  0 ~~ 65 seconds
++Default value: 0, range:  0 ~~ 5 seconds
++
  * **AT Command:**
  (% class="box infomessage" %)
  (((
--**AT+CMDDLaa=hex(bb cc)*1000**
++**AT+CMDDLaa=hex(bb cc)**
  )))
  **Example:**
@@ -701,13 +701,13 @@
  * **Downlink Payload:**
--**0x AA aa bb cc**
++0x AA aa bb cc
--Same as: AT+CMDDLaa=hex(bb cc)*1000
++Same as: AT+CMDDLaa=hex(bb cc)
     **Example:**
--   0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
++   **0xAA 01 03 E8**  ~-~-> Same as **AT+CMDDL1=1000 ms**
@@ -742,14 +742,9 @@
  Ask device to send an uplink immediately.
--* **AT Command:**
--
--No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
--
--
  * **Downlink Payload:**
--**0x08 FF**, RS485-LN will immediately send an uplink.
++**0x08 FF**, RS485-BL will immediately send an uplink.
@@ -757,18 +757,17 @@
  The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
++
  * **AT Command:**
--**AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
++(% style="color:#037691" %)**AT+CMDEAR=mm,nn** (%%)    mm: start position of erase ,nn: stop position of erase Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
--Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
--
  Example screen shot after clear all RS485 commands.
  The uplink screen shot is:
--[[image:1654160691922-496.png]]
++[[image:1654134704555-320.png]]
  * **Downlink Payload:**
@@ -819,317 +819,22 @@
  A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
--== 3.6 Listening mode for RS485 network ==
--This feature support since firmware v1.4
++==== **Control output power duration** ====
--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.
++User can set the output power duration before each sampling.
--[[image:image-20220602171200-8.png||height="567" width="1007"]]
++* **AT Command:**
--To enable the listening mode, use can run the command AT+RXMODE.
++**Example:**
++**AT+3V3T=1000**  ~/~/ 3V3 output power will open 1s before each sampling.
--(% border="1" style="background-color:#ffffcc; width:500px" %)
--|=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
--|(% style="width:161px" %)AT+RXMODE=1,10 |(% style="width:337px" %)Enable listening mode 1, if RS485-LN has received more than 10 RS485 commands from the network. RS485-LN will send these commands via LoRaWAN uplinks.
--|(% style="width:161px" %)AT+RXMODE=2,500|(% style="width:337px" %)Enable listening mode 2, RS485-LN will capture and send a 500ms content once from the first detect of character. Max value is 65535 ms
--|(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
--|(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 ~| cc)
++**AT+5VT=1000**  ~/~/ +5V output power will open 1s before each sampling.
--**Downlink Command:**
--**0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
++* **LoRaWAN Downlink Command:**
++**07 01 aa bb**  Same as AT+5VT=(aa bb)
--**Example**:
--
--The RS485-LN is set to AT+RXMODE=2,1000
--
--There is a two Modbus commands in the RS485 network as below:
--
--The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
--
--And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
--
--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
--
--[[image:image-20220602171200-9.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.
--
--
--== 3.7 Buttons ==
--
--
--(% border="1" style="background-color:#f7faff; width:500px" %)
--|=**Button**|=(% style="width: 1420px;" %)**Feature**
--|**ACT**|(% style="width:1420px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
--|**RST**|(% style="width:1420px" %)Reboot RS485
--|**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
--
--
--== 3.8 LEDs ==
--
--(% border="1" style="background-color:#f7faff; width:500px" %)
--|=**LEDs**|=**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.
--
--
--= 4. Case Study =
--
--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]]
--
--
--= 5. Use AT Command =
--
--== 5.1 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:1654162355560-817.png]]
--
--
--In PC, User needs to set (% style="color:blue" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console of RS485-BL. The default password is 123456. Below is the output for reference:
--
--[[image:1654162368066-342.png]]
--
--
--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/]]
--
--
--== 5.2 Common AT Command Sequence ==
--
--=== 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
--
--If device has not joined network yet:
--
--(% class="box infomessage" %)
--(((
--**AT+FDR**
--)))
--
--(% class="box infomessage" %)
--(((
--**AT+NJM=0**
--)))
--
--(% class="box infomessage" %)
--(((
--**ATZ**
--)))
--
--
--If device already joined network:
--
--(% class="box infomessage" %)
--(((
--**AT+NJM=0**
--)))
--
--(% class="box infomessage" %)
--(((
--**ATZ**
--)))
--
--
--=== 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
--
--
--(% style="background-color:#dcdcdc" %)**AT+FDR** (%%)      Reset Parameters to Factory Default, Keys Reserve
--
--(% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)Set to ABP mode
--
--(% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)Set the Adaptive Data Rate Off
--
--(% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%)Set Data Rate
--
--(% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
--
--(% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) Set transmit frequency to 868.4Mhz
--
--(% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
--
--(% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
--
--(% 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
--
--
--(% style="color:red" %)**Note:**
--
--(% 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
--
--[[image:1654162478620-421.png]]
--
--
--= 6. FAQ =
--
--== 6.1 How to upgrade the image? ==
--
--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:
--
--[[image:1654162535040-878.png]]
--
--**Step1:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
--
--**Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
--
--**Step3: **Open flashloader; choose the correct COM port to update.
--
--(((
--(% style="color:blue" %) 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.
--)))
--
--
--[[image:image-20220602175818-12.png]]
--
--
--[[image:image-20220602175848-13.png]]
--
--
--[[image:image-20220602175912-14.png]]
--
--
--**Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
--
--[[image:image-20220602175638-10.png]]
--
--
--== 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.
--
--
--== 6.3 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>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
--
--
--== 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
--
--When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
--
--Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
--
--
--= 7. Trouble Shooting =
--
--== 7.1 Downlink doesn’t work, how to solve it? ==
--
--Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
--
--
--== 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
--
--It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
--
--
--= 8. Order Info =
--
--(% style="color:blue" %)**Part Number: RS485-LN-XXX**
--
--(% style="color:blue" %)**XXX:**
--
--* (% style="color:blue" %)**EU433**(%%): frequency bands EU433
--* (% style="color:blue" %)**EU868**(%%): frequency bands EU868
--* (% style="color:blue" %)**KR920**(%%): frequency bands KR920
--* (% style="color:blue" %)**CN470**(%%): frequency bands CN470
--* (% style="color:blue" %)**AS923**(%%): frequency bands AS923
--* (% style="color:blue" %)**AU915**(%%): frequency bands AU915
--* (% style="color:blue" %)**US915**(%%): frequency bands US915
--* (% style="color:blue" %)**IN865**(%%): frequency bands IN865
--* (% style="color:blue" %)**RU864**(%%): frequency bands RU864
--* (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
--
--
--
--= 9.Packing Info =
--
--
--**Package Includes**:
--
--* RS485-LN x 1
--* Stick Antenna for LoRa RF part x 1
--* Program cable x 1
--
--**Dimension and weight**:
--
--* Device Size: 13.5 x 7 x 3 cm
--* Device Weight: 105g
--* Package Size / pcs : 14.5 x 8 x 5 cm
--* Weight / pcs : 170g
--
--
--
--= 10. FCC Caution for RS485LN-US915 =
--
--(((
--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.
--)))
--
--(((
--
--)))
--
--(((
--**IMPORTANT NOTE:**
--)))
--
--(((
--**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.
--)))
--
--(((
--
--)))
--
--(((
--**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]].
--)))
++**07 02 aa bb**  Same as AT+3V3T=(aa bb)

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

Summary

Details

Applications

Navigation