Version 64.3 by Xiaoling on 2022/07/04 10:11
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20 **Table of Contents:**
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22 {{toc/}}
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27 (% 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"]]
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36 = 1.Introduction =
37
38 == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
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45 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.
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51 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.
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57 (% 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.
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63 (% 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.
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67 (% 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]]
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74 (% 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" %)​
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76
77 == 1.2 Specifications ==
78
79
80 **Hardware System:**
81
82 * STM32L072CZT6 MCU
83 * SX1276/78 Wireless Chip 
84 * Power Consumption (exclude RS485 device):
85 ** Idle: 32mA@12v
86 ** 20dB Transmit: 65mA@12v
87
88 **Interface for Model:**
89
90 * RS485
91 * Power Input 7~~ 24V DC. 
92
93 **LoRa Spec:**
94
95 * Frequency Range:
96 ** Band 1 (HF): 862 ~~ 1020 Mhz
97 ** Band 2 (LF): 410 ~~ 528 Mhz
98 * 168 dB maximum link budget.
99 * +20 dBm - 100 mW constant RF output vs.
100 * +14 dBm high efficiency PA.
101 * Programmable bit rate up to 300 kbps.
102 * High sensitivity: down to -148 dBm.
103 * Bullet-proof front end: IIP3 = -12.5 dBm.
104 * Excellent blocking immunity.
105 * Low RX current of 10.3 mA, 200 nA register retention.
106 * Fully integrated synthesizer with a resolution of 61 Hz.
107 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
108 * Built-in bit synchronizer for clock recovery.
109 * Preamble detection.
110 * 127 dB Dynamic Range RSSI.
111 * Automatic RF Sense and CAD with ultra-fast AFC.
112 * Packet engine up to 256 bytes with CRC
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116
117 == 1.3 Features ==
118
119 * LoRaWAN Class A & Class C protocol (default Class C)
120 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
121 * AT Commands to change parameters
122 * Remote configure parameters via LoRa Downlink
123 * Firmware upgradable via program port
124 * Support multiply RS485 devices by flexible rules
125 * Support Modbus protocol
126 * Support Interrupt uplink (Since hardware version v1.2)
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130
131 == 1.4 Applications ==
132
133 * Smart Buildings & Home Automation
134 * Logistics and Supply Chain Management
135 * Smart Metering
136 * Smart Agriculture
137 * Smart Cities
138 * Smart Factory
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142
143 == 1.5 Firmware Change log ==
144
145 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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147
148 == 1.6 Hardware Change log ==
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153 v1.2: Add External Interrupt Pin.
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157 v1.0: Release
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163
164 = 2. Power ON Device =
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167 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
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169 * Power Source VIN to RS485-LN VIN+
170 * Power Source GND to RS485-LN VIN-
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173 Once there is power, the RS485-LN will be on.
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176 (% 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" %)​
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181 = 3. Operation Mode =
182
183 == 3.1 How it works? ==
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187 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.
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192
193 == 3.2 Example to join LoRaWAN network ==
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195 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. 
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197 (% 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" %)​
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202 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:
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206 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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209 (% 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" %)​
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213 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:
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217 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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221 Each RS485-LN is shipped with a sticker with unique device EUI:
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225 (% aria-label="1652953462722-299.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953462722-299.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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230 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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234 **Add APP EUI in the application.**
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240 (% 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" %)​
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242 (% 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" %)​
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244 (% 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"]](% title="Click and drag to resize" %)​
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246 You can also choose to create the device manually.
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248 (% 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" %)​
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252 **Add APP KEY and DEV EUI**
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254 (% 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" %)​
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258 (% 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.
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261 (% 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" %)​
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263
264 == 3.3 Configure Commands to read data ==
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266 (((
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269 There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>||anchor="H3.5ConfigureRS485-LNviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
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275 (% 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
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281
282 === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
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284 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:
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286 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
287 |=(% style="width: 110px;" %)(((
288 **AT Commands**
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290 **Description**
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292 **Example**
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295 AT+BAUDR
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297 Set the baud rate (for RS485 connection). Default Value is: 9600.
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299 (((
300 AT+BAUDR=9600
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304 Options: (1200,2400,4800,14400,19200,115200)
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308 AT+PARITY
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310 Set UART parity (for RS485 connection)
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313 AT+PARITY=0
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317 Option: 0: no parity, 1: odd parity, 2: even parity
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321 AT+STOPBIT
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324 Set serial stopbit (for RS485 connection)
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332 AT+STOPBIT=0 for 1bit
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336 AT+STOPBIT=1 for 1.5 bit
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340 AT+STOPBIT=2 for 2 bits
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345
346
347 === 3.3.2 Configure sensors ===
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351 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.
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355 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
356 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
357 |AT+CFGDEV|(% style="width:110px" %)(((
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359 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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362 (((
363 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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367 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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369 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
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372
373
374 === 3.3.3 Configure read commands for each sampling ===
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376 (((
377 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.
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379 To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
380
381 This section describes how to achieve above goals.
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383 During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
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385
386 (% style="color:#037691" %)**Each RS485 commands include two parts:**
387
388 ~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.
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390 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.
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392 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
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395 After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
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397 Below are examples for the how above AT Commands works.
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399
400 (% 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:
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402 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
403 |(% style="width:496px" %)(((
404 (% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
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406 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
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408 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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411 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.
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413 In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
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415
416 (% style="color:#037691" %)**AT+DATACUTx **(%%)**: **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
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418 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
419 |(% style="width:510px" %)(((
420 **AT+DATACUTx=a,b,c**
421
422 * **a: length for the return of AT+COMMAND**
423 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
424 * **c: define the position for valid value.  **
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426
427 **Examples:**
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429 * (% style="color:#037691" %)**Grab bytes**
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431 (% 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" %)​
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434 * (% style="color:#037691" %)**Grab a section**
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436 (% 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" %)​
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438
439 * (% style="color:#037691" %)**Grab different sections**
440
441 (% 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" %)​
442
443
444
445 )))
446
447 === 3.3.4 Compose the uplink payload ===
448
449 (((
450 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.**
451
452
453 )))
454
455 (((
456 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
457
458
459 )))
460
461 (((
462 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
463 )))
464
465 (((
466 Final Payload is
467 )))
468
469 (((
470 (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
471 )))
472
473 (((
474 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
475 )))
476
477 (% aria-label="1653269759169-150.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653269759169-150.png||data-widget="image" height="513" width="716"]](% 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" %)​
478
479
480 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
481
482
483 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
484
485 Final Payload is
486
487 (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
488
489
490 1. PAYVER: Defined by AT+PAYVER
491 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
492 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
493 1. 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
494
495 (% 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" %)​
496
497
498 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
499
500 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
501
502 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
503
504 DATA3=the rest of Valid value of RETURN10= **30**
505
506
507 (% 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:
508
509 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
510
511 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
512
513 * For US915 band, max 11 bytes for each uplink.
514
515 ~* For all other bands: max 51 bytes for each uplink.
516
517
518 Below are the uplink payloads:
519
520 (% 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" %)​
521
522
523
524 === 3.3.5 Uplink on demand ===
525
526 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.
527
528 Downlink control command:
529
530 **0x08 command**: Poll an uplink with current command set in RS485-LN.
531
532 **0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
533
534
535
536 === 3.3.6 Uplink on Interrupt ===
537
538 RS485-LN support external Interrupt uplink since hardware v1.2 release.
539
540 (% 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" %)​
541
542 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.
543
544
545 == 3.4 Uplink Payload ==
546
547
548 (% aria-label="image-20220606110929-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220606110929-1.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" %)​
549
550 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
551
552
553 == 3.5 Configure RS485-LN via AT or Downlink ==
554
555 (((
556 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
557 )))
558
559 (((
560 There are two kinds of Commands:
561 )))
562
563 * (((
564 (% 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]]
565 )))
566
567 * (((
568 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
569 )))
570
571 (((
572
573 )))
574
575
576 === 3.5.1 Common Commands ===
577
578 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]]
579
580
581 === 3.5.2 Sensor related commands ===
582
583 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.
584
585 (% 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" %)​
586
587 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)
588
589
590
591 === 3.5.3 Sensor related commands ===
592
593
594
595
596 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
597
598 (((
599 This command is used to configure the RS485 devices; they won’t be used during sampling.
600 )))
601
602 * (((
603 (% style="color:#037691" %)**AT Command**
604
605 (((
606 **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
607 )))
608 )))
609
610 (((
611
612 )))
613
614 * (((
615 (% style="color:#037691" %)**Downlink Payload**
616 )))
617
618 (((
619 Format: A8 MM NN XX XX XX XX YY
620 )))
621
622 (((
623 Where:
624 )))
625
626 * (((
627 MM: 1: add CRC-16/MODBUS ; 0: no CRC
628 )))
629 * (((
630 NN: The length of RS485 command
631 )))
632 * (((
633 XX XX XX XX: RS485 command total NN bytes
634 )))
635 * (((
636 (((
637 YY: How many bytes will be uplink from the return of this RS485 command,
638 )))
639
640 * (((
641 if YY=0, RS485-LN will execute the downlink command without uplink;
642 )))
643 * (((
644 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
645 )))
646 * (((
647 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
648 )))
649 )))
650
651 (((
652
653
654 **Example 1**  ~-~-> Configure without ask for uplink (YY=0)
655 )))
656
657 (((
658 To connect a Modbus Alarm with below commands.
659 )))
660
661 * (((
662 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.
663 )))
664
665 * (((
666 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.
667 )))
668
669 (((
670
671
672 So if user want to use downlink command to control to RS485 Alarm, he can use:
673 )))
674
675 (((
676 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
677 )))
678
679 (((
680 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
681 )))
682
683 (((
684 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.
685 )))
686
687 (((
688
689 )))
690
691 (((
692 **Example 2**  ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
693 )))
694
695 (((
696 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
697 )))
698
699 (((
700
701 )))
702
703 (((
704 (((
705 RS485-LN got this downlink command and send (% style="color:#4f81bd" %)**0A 08 00 04 00 01 **(%%)to Modbus network. One of the RS485 sensor in the network send back Modbus reply **0A 08 00 04 00 00**. RS485-LN get this reply and combine with the original downlink command and uplink. The uplink message is:  **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
706 )))
707
708
709 )))
710
711 (((
712 (% aria-label="1654159460680-153.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654159460680-153.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
713 )))
714
715
716
717
718 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
719
720 (((
721 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.
722 )))
723
724 * (((
725 (% style="color:#037691" %)**AT Command:**
726
727 **AT+PAYVER:    **Set PAYVER field = 1
728
729
730 )))
731 * (((
732 (% style="color:#037691" %)**Downlink Payload:**
733 )))
734
735 (((
736 **0xAE 01**  ~-~->  Set PAYVER field =  0x01
737 )))
738
739 (((
740 **0xAE 0F**   ~-~->  Set PAYVER field =  0x0F
741 )))
742
743
744
745
746 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
747
748 (((
749 AT+COMMANDx or AT+DATACUTx
750 )))
751
752 (((
753 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"]].
754 )))
755
756 (((
757
758 )))
759
760 * (((
761 (% style="color:#037691" %)**AT Command:**
762 )))
763
764 **AT+COMMANDx:    **Configure RS485 read command to sensor.
765
766 **AT+DATACUTx:        **Configure how to handle return from RS485 devices.
767
768
769 * (((
770 (% style="color:#037691" %)**Downlink Payload:**
771 )))
772
773 (((
774 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
775 )))
776
777 (((
778 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
779 )))
780
781 (((
782 Format: AF MM NN LL XX XX XX XX YY
783 )))
784
785 (((
786 Where:
787 )))
788
789 * (((
790 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
791 )))
792 * (((
793 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
794 )))
795 * (((
796 LL:  The length of AT+COMMAND or AT+DATACUT command
797 )))
798 * (((
799 XX XX XX XX: AT+COMMAND or AT+DATACUT command
800 )))
801 * (((
802 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.
803 )))
804
805 (((
806
807
808 **Example:**
809 )))
810
811 (((
812 (% 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
813 )))
814
815 (((
816 (% 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**
817 )))
818
819 (((
820 (% 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**
821 )))
822
823
824
825
826 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
827
828 (((
829 **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]].
830 )))
831
832 (((
833 This command is valid since v1.3 firmware version
834 )))
835
836 (((
837 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.
838 )))
839
840 (((
841
842 )))
843
844 (((
845 **Example:**
846 )))
847
848 * (((
849 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
850 )))
851 * (((
852 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.
853 )))
854 * (((
855 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.
856
857
858 )))
859
860 (% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]](% title="Click and drag to resize" %)​
861
862 (% 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" %)​
863
864
865
866
867 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
868
869 (((
870 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.
871 )))
872
873 (((
874 Default value: 0, range:  0 ~~ 65 seconds
875 )))
876
877 * (((
878 (% style="color:#037691" %)** AT Command:**
879
880 **AT+CMDDLaa=hex(bb cc)*1000**
881 )))
882
883 (((
884
885
886 **Example:**
887 )))
888
889 (((
890 **AT+CMDDL1=1000** to send the open time to 1000ms
891 )))
892
893 (((
894
895 )))
896
897 * (((
898 (% style="color:#037691" %)** Downlink Payload:**
899 )))
900
901 (((
902 **0x AA aa bb cc**
903 )))
904
905 (((
906 Same as: AT+CMDDLaa=hex(bb cc)*1000
907 )))
908
909 (((
910 **Example:**
911 )))
912
913 (((
914 **0xAA 01 00 01**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
915 )))
916
917
918
919
920 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
921
922 (((
923 Define to use one uplink or multiple uplinks for the sampling.
924 )))
925
926 (((
927 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
928
929
930 )))
931
932 * (((
933 (% style="color:#037691" %)** AT Command:**
934 )))
935
936 **AT+DATAUP=0**
937
938 **AT+DATAUP=1**
939
940
941 * (((
942 (% style="color:#037691" %)** Downlink Payload:**
943 )))
944
945 (((
946 **0xAD 00**  **~-~->** Same as AT+DATAUP=0
947 )))
948
949 (((
950 **0xAD 01**  **~-~->** Same as AT+DATAUP=1
951 )))
952
953
954
955
956 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
957
958 (((
959 Ask device to send an uplink immediately.
960 )))
961
962 * (((
963 (% style="color:#037691" %)** AT Command:**
964 )))
965
966 (((
967 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
968 )))
969
970 (((
971
972 )))
973
974 * (((
975 (% style="color:#037691" %)** Downlink Payload:**
976 )))
977
978 (((
979 **0x08 FF**, RS485-LN will immediately send an uplink.
980 )))
981
982
983
984
985 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
986
987 (((
988 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
989
990
991 )))
992
993 * (((
994 (% style="color:#037691" %)** AT Command:**
995 )))
996
997 (((
998 **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
999 )))
1000
1001 (((
1002 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1003 )))
1004
1005 (((
1006 Example screen shot after clear all RS485 commands. 
1007 )))
1008
1009 (((
1010
1011 )))
1012
1013 (((
1014 The uplink screen shot is:
1015 )))
1016
1017 (% 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" %)​
1018
1019
1020 * (((
1021 (% style="color:#037691" %)** Downlink Payload:**
1022 )))
1023
1024 (((
1025 **0x09 aa bb** same as AT+CMDEAR=aa,bb
1026 )))
1027
1028
1029
1030
1031 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1032
1033 (((
1034 Set the Rs485 serial communication parameters:
1035 )))
1036
1037 * (((
1038 (% style="color:#037691" %)** AT Command:**
1039 )))
1040
1041 (((
1042
1043
1044 * Set Baud Rate
1045 )))
1046
1047 **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
1048
1049
1050 (((
1051 * Set UART Parity
1052 )))
1053
1054 **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
1055
1056
1057 (((
1058 * Set STOPBIT
1059 )))
1060
1061 **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1062
1063
1064
1065 * (((
1066 (% style="color:#037691" %)** Downlink Payload:**
1067 )))
1068
1069 (((
1070 **A7 01 aa bb**:  Same  AT+BAUDR=hex(aa bb)*100
1071 )))
1072
1073 (((
1074 **Example:**
1075 )))
1076
1077 * (((
1078 A7 01 00 60   same as AT+BAUDR=9600
1079 )))
1080 * (((
1081 A7 01 04 80  same as AT+BAUDR=115200
1082 )))
1083
1084 (((
1085 A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1086 )))
1087
1088 (((
1089 A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1090 )))
1091
1092
1093
1094
1095 == 3.6 Listening mode for RS485 network ==
1096
1097 (((
1098 This feature support since firmware v1.4
1099 )))
1100
1101 (((
1102 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.
1103 )))
1104
1105 (% 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" %)​
1106
1107 (((
1108 To enable the listening mode, use can run the command AT+RXMODE.
1109 )))
1110
1111 (((
1112
1113 )))
1114
1115 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1116 |=(% style="width: 100px;" %)(((
1117 **Command example**
1118 )))|=(% style="width: 400px;" %)(((
1119 **Function**
1120 )))
1121 |(% style="width:100px" %)(((
1122 AT+RXMODE=1,10
1123 )))|(% style="width:400px" %)(((
1124 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.
1125 )))
1126 |(% style="width:100px" %)(((
1127 AT+RXMODE=2,500
1128 )))|(% style="width:400px" %)(((
1129 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
1130 )))
1131 |(% style="width:100px" %)(((
1132 AT+RXMODE=0,0
1133 )))|(% style="width:400px" %)(((
1134 Disable listening mode. This is the default settings.
1135 )))
1136 |(% style="width:100px" %)(((
1137
1138 )))|(% style="width:400px" %)(((
1139 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1140 )))
1141
1142 (((
1143 (% style="color:#037691" %)** Downlink Command:**
1144 )))
1145
1146 (((
1147 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1148 )))
1149
1150 (((
1151
1152 )))
1153
1154 (((
1155 **Example**:
1156 )))
1157
1158 (((
1159 The RS485-LN is set to AT+RXMODE=2,1000
1160 )))
1161
1162 (((
1163 There is a two Modbus commands in the RS485 network as below:
1164 )))
1165
1166 (((
1167 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1168 )))
1169
1170 (((
1171 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1172 )))
1173
1174 (((
1175 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
1176 )))
1177
1178 (((
1179 (% 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" %)​
1180 )))
1181
1182 (((
1183
1184 )))
1185
1186 (((
1187 (((
1188 (% 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.
1189 )))
1190 )))
1191
1192
1193 == 3.7 Buttons ==
1194
1195
1196 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1197 |=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1198 |(% 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**
1199 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1200 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1201
1202
1203
1204
1205 == 3.8 LEDs ==
1206
1207
1208 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1209 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1210 |**PWR**|Always on if there is power
1211 |**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.
1212
1213
1214
1215
1216 = 4. Case Study =
1217
1218 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]]
1219
1220
1221 = 5. Use AT Command =
1222
1223 == 5.1 Access AT Command ==
1224
1225 (((
1226 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.
1227 )))
1228
1229 (% 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" %)​
1230
1231
1232 (((
1233 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:
1234 )))
1235
1236 (% 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" %)​
1237
1238
1239 (((
1240 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/]]
1241 )))
1242
1243
1244
1245 == 5.2 Common AT Command Sequence ==
1246
1247
1248 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1249
1250 If device has not joined network yet:
1251
1252 * (% style="color:#037691" %)**AT+FDR**
1253 * (% style="color:#037691" %)**AT+NJM=0**
1254 * (% style="color:#037691" %)**ATZ**
1255
1256 (((
1257
1258
1259 If device already joined network:
1260
1261 * (% style="color:#037691" %)**AT+NJM=0**
1262 * (% style="color:#037691" %)**ATZ**
1263
1264
1265 )))
1266
1267
1268 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1269
1270
1271 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1272
1273 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1274
1275 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1276
1277 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1278
1279 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1280
1281 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1282
1283 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1284
1285 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1286
1287 (% 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.
1288
1289 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1290
1291
1292 (% style="color:red" %)**Note:**
1293
1294 (((
1295 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1296 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1297 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.
1298 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
1299 )))
1300
1301 (% 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" %)​
1302
1303
1304 = 6. FAQ =
1305
1306 == 6.1 How to upgrade the image? ==
1307
1308 (((
1309 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1310 )))
1311
1312 * (((
1313 Support new features
1314 )))
1315 * (((
1316 For bug fix
1317 )))
1318 * (((
1319 Change LoRaWAN bands.
1320 )))
1321
1322 (((
1323 Below shows the hardware connection for how to upload an image to RS485-LN:
1324 )))
1325
1326 (% aria-label="1654162535040-878.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162535040-878.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1327
1328 (((
1329 (% 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]].
1330 )))
1331
1332 (((
1333 (% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1334 )))
1335
1336 (((
1337 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1338 )))
1339
1340 (((
1341 (((
1342 (((
1343 (% 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.
1344 )))
1345 )))
1346 )))
1347
1348
1349 (% 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" %)​
1350
1351
1352 (% 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" %)​
1353
1354
1355 (% 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" %)​
1356
1357
1358 (% 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:
1359
1360 (% 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" %)​
1361
1362
1363 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1364
1365 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1366
1367
1368 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1369
1370 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"]].
1371
1372
1373 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1374
1375 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1376
1377 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1378
1379
1380 == 6.5 Can i use point to point communication for RS485-LN? ==
1381
1382 Yes, please refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1383
1384
1385 = 7. Trouble Shooting =
1386
1387 == 7.1 Downlink doesn't work, how to solve it? ==
1388
1389 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1390
1391
1392 == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1393
1394 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1395
1396
1397 = 8. Order Info =
1398
1399 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1400
1401 (% style="color:blue" %)**XXX:**
1402
1403 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1404 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1405 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1406 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1407 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1408 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1409 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1410 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1411 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1412 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1413
1414 = 9.Packing Info =
1415
1416
1417 **Package Includes**:
1418
1419 * RS485-LN x 1
1420 * Stick Antenna for LoRa RF part x 1
1421 * Program cable x 1
1422
1423 **Dimension and weight**:
1424
1425 * Device Size: 13.5 x 7 x 3 cm
1426 * Device Weight: 105g
1427 * Package Size / pcs : 14.5 x 8 x 5 cm
1428 * Weight / pcs : 170g
1429
1430 = 10. FCC Caution for RS485LN-US915 =
1431
1432 (((
1433 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1434 )))
1435
1436 (((
1437 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.
1438 )))
1439
1440 (((
1441
1442 )))
1443
1444 (((
1445 (% style="color:red" %)**IMPORTANT NOTE:**
1446 )))
1447
1448 (((
1449 **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:
1450 )))
1451
1452 (((
1453 —Reorient or relocate the receiving antenna.
1454 )))
1455
1456 (((
1457 —Increase the separation between the equipment and receiver.
1458 )))
1459
1460 (((
1461 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1462 )))
1463
1464 (((
1465 —Consult the dealer or an experienced radio/TV technician for help.
1466 )))
1467
1468 (((
1469
1470 )))
1471
1472 (((
1473 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1474 )))
1475
1476 (((
1477 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.
1478 )))
1479
1480
1481 = 11. Support =
1482
1483 * (((
1484 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.
1485 )))
1486 * (((
1487 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]].
1488 )))

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