Version 80.2 by Xiaoling on 2022/10/29 10:36
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15 **Table of Contents:**
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17 {{toc/}}
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22 (% 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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31 = 1.Introduction =
32
33
34 == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
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37 (((
38 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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42 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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46 (% 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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50 (% 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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54 (% 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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58 (% 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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61
62 == 1.2 Specifications ==
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64
65 (% style="color:#037691" %)**Hardware System:**
66
67 * STM32L072CZT6 MCU
68 * SX1276/78 Wireless Chip 
69 * Power Consumption (exclude RS485 device):
70 ** Idle: 32mA@12v
71 ** 20dB Transmit: 65mA@12v
72
73 (% style="color:#037691" %)**Interface for Model:**
74
75 * RS485
76 * Power Input 7~~ 24V DC. 
77
78 (% style="color:#037691" %)**LoRa Spec:**
79
80 * Frequency Range:
81 ** Band 1 (HF): 862 ~~ 1020 Mhz
82 ** Band 2 (LF): 410 ~~ 528 Mhz
83 * 168 dB maximum link budget.
84 * +20 dBm - 100 mW constant RF output vs.
85 * +14 dBm high efficiency PA.
86 * Programmable bit rate up to 300 kbps.
87 * High sensitivity: down to -148 dBm.
88 * Bullet-proof front end: IIP3 = -12.5 dBm.
89 * Excellent blocking immunity.
90 * Low RX current of 10.3 mA, 200 nA register retention.
91 * Fully integrated synthesizer with a resolution of 61 Hz.
92 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
93 * Built-in bit synchronizer for clock recovery.
94 * Preamble detection.
95 * 127 dB Dynamic Range RSSI.
96 * Automatic RF Sense and CAD with ultra-fast AFC.
97 * Packet engine up to 256 bytes with CRC
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100
101
102 == 1.3 Features ==
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104
105 * LoRaWAN Class A & Class C protocol (default Class C)
106 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864/MA869
107 * AT Commands to change parameters
108 * Remote configure parameters via LoRa Downlink
109 * Firmware upgradable via program port
110 * Support multiply RS485 devices by flexible rules
111 * Support Modbus protocol
112 * Support Interrupt uplink (Since hardware version v1.2)
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116
117 == 1.4 Applications ==
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119
120 * Smart Buildings & Home Automation
121 * Logistics and Supply Chain Management
122 * Smart Metering
123 * Smart Agriculture
124 * Smart Cities
125 * Smart Factory
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128
129
130 == 1.5 Firmware Change log ==
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133 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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136
137 == 1.6 Hardware Change log ==
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143 v1.2: Add External Interrupt Pin.
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147 v1.0: Release
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154
155 = 2. Power ON Device =
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159 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
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161 * Power Source VIN to RS485-LN VIN+
162 * Power Source GND to RS485-LN VIN-
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165 Once there is power, the RS485-LN will be on.
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168 (% 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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173
174 = 3. Operation Mode =
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176
177 == 3.1 How it works? ==
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180 (((
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182 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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188
189 == 3.2 Example to join LoRaWAN network ==
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192 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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195 (% 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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200 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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204 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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219 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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223 Each RS485-LN is shipped with a sticker with unique device EUI:
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227 (% 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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232 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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238 **Add APP EUI in the application.**
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242 (% 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" %)​
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246 (% 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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248 (% 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"]]
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251 (% title="Click and drag to resize" %)​
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253 You can also choose to create the device manually.
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255 (% 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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259 **Add APP KEY and DEV EUI**
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261 (% 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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266 (% 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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271 (% 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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274
275 == 3.3 Configure Commands to read data ==
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278 (((
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280 (((
281 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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289 (% 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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296
297 === 3.3.1 Configure UART settings for RS485 or TTL communication ===
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300 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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303 (% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
304 |=(% style="width: 110px;" %)(((
305 **AT Commands**
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307 **Description**
308 )))|=(% style="width: 190px;" %)(((
309 **Example**
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311 |(% style="width:110px" %)(((
312 AT+BAUDR
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314 Set the baud rate (for RS485 connection). Default Value is: 9600.
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317 AT+BAUDR=9600
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321 Options: (1200,2400,4800,14400,19200,115200)
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324 |(% style="width:110px" %)(((
325 AT+PARITY
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327 Set UART parity (for RS485 connection)
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330 AT+PARITY=0
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334 Option: 0: no parity, 1: odd parity, 2: even parity
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337 |(% style="width:110px" %)(((
338 AT+STOPBIT
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341 Set serial stopbit (for RS485 connection)
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349 AT+STOPBIT=0 for 1bit
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353 AT+STOPBIT=1 for 1.5 bit
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357 AT+STOPBIT=2 for 2 bits
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362
363
364 === 3.3.2 Configure sensors ===
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367 (((
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369 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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375 (% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
376 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 210px;" %)**Description**|=(% style="width: 190px;" %)**Example**
377 |AT+CFGDEV|(% style="width:110px" %)(((
378 (((
379 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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382 (((
383 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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386 (((
387 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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389 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
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392
393
394 === 3.3.3 Configure read commands for each sampling ===
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397 (((
398 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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400 To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
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402 This section describes how to achieve above goals.
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404 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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407 (% style="color:#037691" %)**Each RS485 commands include two parts:**
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410 ~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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412 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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414 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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417 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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419 Below are examples for the how above AT Commands works.
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421
422 (% 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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424 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
425 |(% style="width:496px" %)(((
426 **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
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428 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
429
430 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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432
433 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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435 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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437
438 (% style="color:#037691" %)**AT+DATACUTx **(%%)**: **This command defines how to handle the return from AT+COMMANDx, max return length is 100 bytes.
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440 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
441 |(% style="width:510px" %)(((
442 **AT+DATACUTx=a,b,c**
443
444 * **a: length for the return of AT+COMMAND**
445 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
446 * **c: define the position for valid value.  **
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448
449 **Examples:**
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451
452 * (% style="color:#037691" %)**Grab bytes**
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454 (% 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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458 * (% style="color:#037691" %)**Grab a section**
459
460 (% 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" %)​
461
462
463
464 * (% style="color:#037691" %)**Grab different sections**
465
466 (% 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" %)​
467
468
469
470 )))
471
472 === 3.3.4 Compose the uplink payload ===
473
474
475 (((
476 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.**
477
478
479 )))
480
481 (((
482 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
483
484
485 )))
486
487 (((
488 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
489 )))
490
491 (((
492 Final Payload is (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
493 )))
494
495 (((
496 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
497
498
499 )))
500
501 [[image:image-20220929111027-1.png||height="509" width="685"]](% title="Click and drag to resize" %)​
502
503
504 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
505
506
507 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
508
509 Final Payload is (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
510
511
512 ~1. PAYVER: Defined by AT+PAYVER
513
514 2. PAYLOAD COUNT: Total how many uplinks of this sampling.
515
516 3. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
517
518 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
519
520
521 (% 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" %)​
522
523
524 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
525
526 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
527
528 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
529
530 DATA3=the rest of Valid value of RETURN10= **30**
531
532
533 (% 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:**
534
535
536 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
537
538 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
539
540 * For US915 band, max 11 bytes for each uplink.
541
542 ~* For all other bands: max 51 bytes for each uplink.
543
544
545 (% style="color:red" %)** When AT+DATAUP=1, the maximum number of segments is 15, and the maximum total number of bytes is 1500;**
546
547 (% 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)**
548
549
550
551 Below are the uplink payloads:
552
553
554 (% 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" %)​
555
556
557
558 === 3.3.5 Uplink on demand ===
559
560
561 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.
562
563 (% style="color:blue" %)**Downlink control command:**
564
565 (% style="color:#4472c4" %)** 0x08 command**(%%): Poll an uplink with current command set in RS485-LN.
566
567 (% style="color:#4472c4" %)** 0xA8 command**(%%): Send a command to RS485-LN and uplink the output from sensors.
568
569
570
571 === 3.3.6 Uplink on Interrupt ===
572
573
574 RS485-LN support external Interrupt uplink since hardware v1.2 release.
575
576
577 (% 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" %)​
578
579 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.
580
581
582
583 == 3.4 Uplink Payload ==
584
585
586 (% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:500px" %)
587 |=(% scope="row" style="width: 60px;" %)(((
588 Size(bytes)
589 )))|(% style="width:80px" %)1|(% style="width:360px" %)(((
590 Length depends on the return from the commands
591 )))
592 |=(% style="width: 90px;" %)(((
593 Value
594 )))|(% style="width:114px" %)(((
595 PAYLOAD_VER
596 )))|(% style="width:353px" %)(((
597 If the valid payload is too long and exceed the maximum
598
599 support payload length in server, server will show payload not
600
601 provided in the LoRaWAN server.
602 )))
603
604 (% 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"]]
605
606 (% title="Click and drag to resize" %)​
607
608 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
609
610
611
612 == 3.5 Configure RS485-LN via AT or Downlink ==
613
614
615 (((
616 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
617 )))
618
619 (((
620 There are two kinds of Commands:
621 )))
622
623 * (((
624 (% 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]]
625 )))
626
627 * (((
628 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
629 )))
630
631 (((
632
633 )))
634
635
636
637 === 3.5.1 Common Commands ===
638
639
640 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]]
641
642
643
644 === 3.5.2 Downlink Response(Since firmware v1.4) ===
645
646
647 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.
648
649
650 (% 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"]]
651
652 (% title="Click and drag to resize" %)​
653
654 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)
655
656
657
658 === 3.5.3 Sensor related commands ===
659
660
661
662
663 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
664
665
666 (((
667 This command is used to configure the RS485 devices; they won't be used during sampling. Max Length of AT+CFGDEV is **40 bytes**.
668 )))
669
670 (((
671 * (% style="color:#037691" %)**AT Command**
672
673 (((
674 (% 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
675 )))
676 )))
677
678 (((
679
680 )))
681
682 * (((
683 (% style="color:#037691" %)**Downlink Payload**
684 )))
685
686 (((
687 Format: (% style="color:#4472c4" %)** A8 MM NN XX XX XX XX YY**
688 )))
689
690 (((
691 Where:
692 )))
693
694 * (((
695 MM: 1: add CRC-16/MODBUS ; 0: no CRC
696 )))
697 * (((
698 NN: The length of RS485 command
699 )))
700 * (((
701 XX XX XX XX: RS485 command total NN bytes
702 )))
703 * (((
704 (((
705 YY: How many bytes will be uplink from the return of this RS485 command,
706 )))
707
708 * (((
709 if YY=0, RS485-LN will execute the downlink command without uplink;
710 )))
711 * (((
712 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
713 )))
714 * (((
715 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
716 )))
717 )))
718
719 (((
720
721
722 (% style="color:blue" %)**Example 1:**  (%%) ~-~-> Configure without ask for uplink (YY=0)
723 )))
724
725 (((
726 To connect a Modbus Alarm with below commands.
727 )))
728
729 * (((
730 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.
731 )))
732
733 * (((
734 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.
735 )))
736
737 (((
738
739
740 So if user want to use downlink command to control to RS485 Alarm, he can use:
741 )))
742
743 (((
744 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
745 )))
746
747 (((
748 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
749 )))
750
751 (((
752 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.
753 )))
754
755 (((
756
757 )))
758
759 (((
760 (% style="color:blue" %)**Example 2:**  (%%) ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
761 )))
762
763 (((
764 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
765 )))
766
767 (((
768
769 )))
770
771 (((
772 (((
773 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**
774 )))
775
776
777 )))
778
779 (((
780 (% 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" %)​
781 )))
782
783
784
785
786 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
787
788
789 (((
790 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.
791 )))
792
793 (((
794 * (% style="color:#037691" %)**AT Command:**
795
796 (% style="color:#4472c4" %)** AT+PAYVER:    ** (%%) Set PAYVER field = 1
797
798
799 )))
800
801 * (((
802 (% style="color:#037691" %)**Downlink Payload:**
803 )))
804
805 (((
806 (% style="color:#4472c4" %)** 0xAE 01** (%%) ~-~->  Set PAYVER field =  0x01
807 )))
808
809 (((
810 (% style="color:#4472c4" %)** 0xAE 0F**   (%%) ~-~->  Set PAYVER field =  0x0F
811 )))
812
813
814 **1 )  Add the interrupt flag at the highest bit of the Payver byte, that is, Byte7 of the first byte. (Since v1.4.0)**
815
816
817 [[image:image-20220824145428-2.png||height="168" width="1300"]]
818
819
820
821 **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.**
822
823
824 [[image:image-20220824145428-3.png||height="308" width="1200"]]
825
826
827
828
829 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
830
831
832 (((
833 AT+COMMANDx or AT+DATACUTx
834 )))
835
836 (((
837 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"]].
838 )))
839
840 (((
841
842 )))
843
844 * (((
845 (% style="color:#037691" %)**AT Command:**
846 )))
847
848 (% style="color:#4472c4" %)** AT+COMMANDx:    ** (%%) Configure RS485 read command to sensor.
849
850 (% style="color:#4472c4" %)** AT+DATACUTx:        **(%%) Configure how to handle return from RS485 devices.
851
852
853 * (((
854 (% style="color:#037691" %)**Downlink Payload:**
855 )))
856
857 (((
858 (% style="color:#4472c4" %)** 0xAF**(%%) downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
859
860
861 )))
862
863 (((
864 (% style="color:red" %)**Note : if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
865
866
867 )))
868
869 (((
870 Format: (% style="color:#4472c4" %)** AF MM NN LL XX XX XX XX YY**
871 )))
872
873 (((
874 Where:
875 )))
876
877 * (((
878 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
879 )))
880 * (((
881 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
882 )))
883 * (((
884 LL:  The length of AT+COMMAND or AT+DATACUT command
885 )))
886 * (((
887 XX XX XX XX: AT+COMMAND or AT+DATACUT command
888 )))
889 * (((
890 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.
891 )))
892
893 (((
894
895
896 **Example:**
897 )))
898
899 (((
900 (% 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
901 )))
902
903 (((
904 (% 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**
905 )))
906
907 (((
908 (% 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**
909 )))
910
911
912
913
914 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
915
916
917 (((
918 (% 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]].
919 )))
920
921 (((
922 This command is valid since v1.3 firmware version
923 )))
924
925 (((
926 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.
927 )))
928
929 (((
930
931 )))
932
933 (((
934 **Example:**
935 )))
936
937 * (((
938 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
939 )))
940 * (((
941 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.
942 )))
943 * (((
944 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.
945
946
947 )))
948
949 (% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]]
950
951 (% title="Click and drag to resize" %)​
952
953 (% 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" %)​
954
955
956
957
958 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
959
960
961 (((
962 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.
963 )))
964
965 (((
966 Default value: 0, range:  0 ~~ 65 seconds
967 )))
968
969 (((
970 * (% style="color:#037691" %)** AT Command:**
971
972 (% style="color:#4472c4" %)** AT+CMDDLaa=hex(bb cc)*1000**
973 )))
974
975 (((
976
977
978 **Example:**
979 )))
980
981 (((
982 (% style="color:#4472c4" %)** AT+CMDDL1=1000** (%%)to send the open time to 1000ms
983 )))
984
985 (((
986
987 )))
988
989 * (((
990 (% style="color:#037691" %)** Downlink Payload:**
991 )))
992
993 (((
994 (% style="color:#4472c4" %)** 0x AA aa bb cc**(%%) Same as: AT+CMDDLaa=hex(bb cc)*1000
995 )))
996
997 (((
998
999
1000 **Example:**
1001 )))
1002
1003 (((
1004 **0xAA 01 00 01**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
1005 )))
1006
1007
1008
1009
1010 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
1011
1012
1013 (((
1014 Define to use one uplink or multiple uplinks for the sampling.
1015 )))
1016
1017 (((
1018 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
1019
1020
1021 )))
1022
1023 (((
1024 * (% style="color:#037691" %)** AT Command:**
1025
1026 (% style="color:#4472c4" %)** AT+DATAUP=0**
1027
1028 (% style="color:#4472c4" %)** AT+DATAUP=1**
1029
1030
1031 )))
1032
1033 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1034
1035 Each uplink is sent to the server at 20-second intervals when segmented.
1036
1037
1038 * (((
1039 (% style="color:#037691" %)** Downlink Payload:**
1040 )))
1041
1042 (% style="color:#4472c4" %)** 0xAD 00** (%%) **~-~->** Same as AT+DATAUP=0
1043
1044 (% 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.
1045
1046
1047 * (((
1048 (% style="color:#037691" %)** AT Command:**
1049 )))
1050
1051 (% style="color:#4472c4" %)** AT+DATAUP=1,Timeout**
1052
1053
1054 * (((
1055 (% style="color:#037691" %)** Downlink Payload:**
1056 )))
1057
1058 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1059
1060 Each uplink is sent to the server at 20-second intervals when segmented.
1061
1062
1063
1064
1065 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
1066
1067
1068 (((
1069 Ask device to send an uplink immediately.
1070 )))
1071
1072 * (((
1073 (% style="color:#037691" %)** AT Command:**
1074 )))
1075
1076 (((
1077 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
1078 )))
1079
1080 (((
1081
1082 )))
1083
1084 * (((
1085 (% style="color:#037691" %)** Downlink Payload:**
1086 )))
1087
1088 (((
1089 (% style="color:#4472c4" %)** 0x08 FF**(%%), RS485-LN will immediately send an uplink.
1090 )))
1091
1092
1093
1094
1095 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
1096
1097
1098 (((
1099 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1100
1101
1102 )))
1103
1104 * (((
1105 (% style="color:#037691" %)** AT Command:**
1106 )))
1107
1108 (((
1109 (% style="color:#4472c4" %)** AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase
1110 )))
1111
1112 (((
1113
1114
1115 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1116 )))
1117
1118 (((
1119 Example screen shot after clear all RS485 commands. 
1120 )))
1121
1122 (((
1123
1124 )))
1125
1126 (((
1127 The uplink screen shot is:
1128 )))
1129
1130 (% 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" %)​
1131
1132
1133 * (((
1134 (% style="color:#037691" %)** Downlink Payload:**
1135 )))
1136
1137 (((
1138 (% style="color:#4472c4" %)** 0x09 aa bb** (%%) same as AT+CMDEAR=aa,bb
1139 )))
1140
1141
1142
1143
1144 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1145
1146
1147 (((
1148 Set the Rs485 serial communication parameters:
1149 )))
1150
1151 (((
1152 (% style="color:#037691" %)**AT Command:**
1153 )))
1154
1155 (((
1156 * Set Baud Rate
1157 )))
1158
1159 (% 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
1160
1161
1162 (((
1163 * Set UART Parity
1164 )))
1165
1166 (% style="color:#4472c4" %)** AT+PARITY=0** (%%) ~/~/  Option: 0: no parity, 1: odd parity, 2: even parity
1167
1168
1169 (((
1170 * Set STOPBIT
1171 )))
1172
1173 (% style="color:#4472c4" %)** AT+STOPBIT=0** (%%) ~/~/  Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1174
1175
1176 (((
1177 (% style="color:#037691" %)**Downlink Payload:**
1178 )))
1179
1180 (((
1181 (% style="color:#4472c4" %)** A7 01 aa bb**:   (%%) Same  AT+BAUDR=hex(aa bb)*100
1182 )))
1183
1184 (((
1185 **Example:**
1186 )))
1187
1188 * (((
1189 A7 01 00 60  same as AT+BAUDR=9600
1190 )))
1191 * (((
1192 A7 01 04 80  same as AT+BAUDR=115200
1193 )))
1194
1195 (((
1196 * A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1197 )))
1198
1199 (((
1200 * A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1201 )))
1202
1203
1204
1205
1206 ==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.0)**(%%) ====
1207
1208
1209 * (((
1210 (% style="color:#037691" %)** AT Command:**
1211 )))
1212
1213 (% style="color:#4472c4" %)** AT+DATABIT=7    **(%%)~/~/ Set the data bits to 7
1214
1215 (% style="color:#4472c4" %)** AT+DATABIT=8    **(%%)~/~/ Set the data bits to 8
1216
1217 * (((
1218 (% style="color:#037691" %)**Downlink Payload:**
1219 )))
1220
1221 (% style="color:#4472c4" %)** A7 04 07**(%%): Same as  AT+DATABIT=7
1222
1223 (% style="color:#4472c4" %)** A7 04 08**(%%): Same as  AT+DATABIT=8
1224
1225
1226
1227 ==== (% style="color:blue" %)**Encrypted payload**(%%) ====
1228
1229 (((
1230
1231 )))
1232
1233 * (((
1234 (% style="color:#037691" %)** AT Command:**
1235 )))
1236
1237 (% style="color:#4472c4" %)** AT+DECRYPT=1  ** (%%) ~/~/ The payload is uploaded without encryption
1238
1239 (% style="color:#4472c4" %)** AT+DECRYPT=0  ** (%%) ~/~/ Encrypt when uploading payload (default)
1240
1241
1242
1243
1244 ==== (% style="color:blue" %)**Get sensor value**(%%) ====
1245
1246
1247 * (((
1248 (% style="color:#037691" %)** AT Command:**
1249 )))
1250
1251 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=0  **(%%) ~/~/ The serial port gets the reading of the current sensor
1252
1253 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=1  **(%%) ~/~/ The serial port gets the current sensor reading and uploads it.
1254
1255
1256
1257
1258 ==== (% style="color:blue" %)**Resets the downlink packet count**(%%) ====
1259
1260
1261 * (((
1262 (% style="color:#037691" %)** AT Command:**
1263 )))
1264
1265 (% 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)
1266
1267 (% 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.
1268
1269
1270
1271
1272 ==== (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches**(%%) ====
1273
1274
1275 * (((
1276 (% style="color:#037691" %)** AT Command:**
1277 )))
1278
1279 (% 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)
1280
1281 (% 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.
1282
1283
1284 * (((
1285 (% style="color:#037691" %)** Downlink Payload:**
1286 )))
1287
1288 (% style="color:#4472c4" %)** 0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1289
1290
1291
1292
1293 ==== (% style="color:blue" %)** Copy downlink to uplink **(%%) ====
1294
1295
1296 * (((
1297 (% style="color:#037691" %)** AT Command:**
1298 )))
1299
1300 (% 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.
1301
1302 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.
1303
1304
1305 [[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"]]
1306
1307 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1308
1309
1310
1311 [[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"]]
1312
1313 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1314
1315
1316
1317
1318 ==== (% style="color:blue" %)**Query version number and frequency band 、TDC**(%%) ====
1319
1320
1321 (((
1322 * (% style="color:#037691" %)**Downlink Payload:**
1323
1324 (% style="color:#4472c4" %)** 26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1325 )))
1326
1327
1328 Example：
1329
1330
1331 [[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"]]
1332
1333
1334
1335
1336 ==== (% style="color:blue" %)** Monitor RS485 communication of other devices**(%%) ====
1337
1338
1339 * (((
1340 (% style="color:#037691" %)** AT Command:**
1341 )))
1342
1343 (% 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.
1344
1345 (% 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.
1346
1347 (% style="color:#4472c4" %)**AT+RXMODE=0,0  ** (%%) ~/~/  Disable this mode (default)
1348
1349
1350 * (((
1351 (% style="color:#037691" %)**Downlink Payload:**
1352 )))
1353
1354 (% style="color:#4472c4" %)** A6 aa bb bb               ** (%%) ~/~/ same as AT+RXMODE=aa,bb
1355
1356 [[image:image-20220824144240-1.png]]
1357
1358
1359
1360 == 3.6 Listening mode for RS485 network ==
1361
1362
1363 (((
1364 This feature support since firmware v1.4
1365 )))
1366
1367 (((
1368 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.
1369
1370
1371 )))
1372
1373 (% 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"]]
1374
1375 (% title="Click and drag to resize" %)​
1376
1377 (((
1378 To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
1379 )))
1380
1381 (((
1382
1383 )))
1384
1385 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1386 |=(% style="width: 100px;" %)(((
1387 **Command example**
1388 )))|=(% style="width: 400px;" %)(((
1389 **Function**
1390 )))
1391 |(% style="width:100px" %)(((
1392 AT+RXMODE=1,10
1393 )))|(% style="width:400px" %)(((
1394 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.
1395 )))
1396 |(% style="width:100px" %)(((
1397 AT+RXMODE=2,500
1398 )))|(% style="width:400px" %)(((
1399 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
1400 )))
1401 |(% style="width:100px" %)(((
1402 AT+RXMODE=0,0
1403 )))|(% style="width:400px" %)(((
1404 Disable listening mode. This is the default settings.
1405 )))
1406 |(% style="width:100px" %)(((
1407
1408 )))|(% style="width:400px" %)(((
1409 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1410 )))
1411
1412 (((
1413
1414
1415 (% style="color:#037691" %)**Downlink Command:**
1416 )))
1417
1418 (((
1419 (% style="color:#4472c4" %)** 0xA6 aa bb cc **(%%) same as AT+RXMODE=aa,(bb<<8 | cc)
1420 )))
1421
1422 (((
1423
1424 )))
1425
1426 (((
1427 **Example**:
1428 )))
1429
1430 (((
1431 The RS485-LN is set to AT+RXMODE=2,1000
1432 )))
1433
1434 (((
1435 There is a two Modbus commands in the RS485 network as below:
1436 )))
1437
1438 (((
1439 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1440 )))
1441
1442 (((
1443 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1444 )))
1445
1446 (((
1447 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
1448
1449
1450 )))
1451
1452 (((
1453 (% 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" %)​
1454 )))
1455
1456 (((
1457
1458 )))
1459
1460 (((
1461 (((
1462 (% 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.**
1463 )))
1464 )))
1465
1466
1467
1468 == 3.7 Buttons ==
1469
1470
1471 (% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
1472 |=(% style="width: 50px;" %)**Button**|=(% style="width: 380px;" %)**Feature**
1473 |(% 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**
1474 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1475 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1476
1477
1478
1479
1480 == 3.8 LEDs ==
1481
1482
1483 (% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
1484 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1485 |**PWR**|Always on if there is power
1486 |**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.
1487
1488
1489
1490
1491 = 4. Case Study =
1492
1493
1494 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]]
1495
1496
1497
1498 = 5. Use AT Command =
1499
1500
1501 == 5.1 Access AT Command ==
1502
1503
1504 (((
1505 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.
1506
1507
1508 )))
1509
1510 (% 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" %)​
1511
1512
1513
1514 (((
1515 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:
1516
1517
1518 )))
1519
1520 (% 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" %)​
1521
1522
1523 (((
1524 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/]]
1525 )))
1526
1527
1528
1529 == 5.2 Common AT Command Sequence ==
1530
1531
1532 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1533
1534
1535 If device has not joined network yet:
1536
1537 * (% style="color:#037691" %)**AT+FDR**
1538 * (% style="color:#037691" %)**AT+NJM=0**
1539 * (% style="color:#037691" %)**ATZ**
1540
1541 (((
1542
1543
1544 If device already joined network:
1545
1546 * (% style="color:#037691" %)**AT+NJM=0**
1547 * (% style="color:#037691" %)**ATZ**
1548
1549
1550 )))
1551
1552
1553
1554 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1555
1556
1557 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1558
1559 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1560
1561 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1562
1563 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1564
1565 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1566
1567 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1568
1569 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1570
1571 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1572
1573 (% 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.
1574
1575 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1576
1577
1578 (% style="color:red" %)**Note:**
1579
1580 (((
1581 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1582 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1583 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.
1584 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
1585
1586
1587 )))
1588
1589 (% 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" %)​
1590
1591
1592
1593 = 6. FAQ =
1594
1595
1596 == 6.1 How to upgrade the image? ==
1597
1598
1599 (((
1600 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1601 )))
1602
1603 * (((
1604 Support new features
1605 )))
1606 * (((
1607 For bug fix
1608 )))
1609 * (((
1610 Change LoRaWAN bands.
1611 )))
1612
1613 (((
1614 Below shows the hardware connection for how to upload an image to RS485-LN:
1615 )))
1616
1617 (% 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"]]
1618
1619 (% title="Click and drag to resize" %)​
1620
1621 (((
1622 (% 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]].
1623
1624
1625 )))
1626
1627 (((
1628 (% 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]].
1629
1630
1631 )))
1632
1633 (((
1634 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1635
1636
1637 )))
1638
1639 (((
1640 (((
1641 (((
1642 (% 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.
1643 )))
1644 )))
1645 )))
1646
1647
1648 (% 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" %)​
1649
1650
1651 (% 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" %)​
1652
1653
1654 (% 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" %)​
1655
1656
1657 (% 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:**
1658
1659 (% 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" %)​
1660
1661
1662
1663 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1664
1665
1666 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1667
1668
1669
1670 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1671
1672
1673 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"]].
1674
1675
1676
1677 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1678
1679
1680 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1681
1682 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1683
1684
1685
1686 == 6.5 Can i use point to point communication for RS485-LN? ==
1687
1688
1689 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]].
1690
1691
1692
1693 == 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1694
1695
1696 [[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/]]
1697
1698
1699
1700 = 7. Trouble Shooting =
1701
1702
1703 == 7.1 Downlink doesn't work, how to solve it? ==
1704
1705
1706 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1707
1708
1709
1710 == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1711
1712
1713 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1714
1715
1716
1717 = 8. Order Info =
1718
1719
1720 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1721
1722 (% style="color:blue" %)**XXX:**
1723
1724 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1725 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1726 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1727 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1728 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1729 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1730 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1731 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1732 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1733 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1734
1735
1736
1737
1738 = 9.Packing Info =
1739
1740
1741 **Package Includes**:
1742
1743 * RS485-LN x 1
1744 * Stick Antenna for LoRa RF part x 1
1745 * Program cable x 1
1746
1747 **Dimension and weight**:
1748
1749 * Device Size: 13.5 x 7 x 3 cm
1750 * Device Weight: 105g
1751 * Package Size / pcs : 14.5 x 8 x 5 cm
1752 * Weight / pcs : 170g
1753
1754
1755
1756
1757 = 10. FCC Caution for RS485LN-US915 =
1758
1759
1760 (((
1761 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1762 )))
1763
1764 (((
1765 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.
1766 )))
1767
1768 (((
1769
1770 )))
1771
1772 (((
1773 (% style="color:red" %)**IMPORTANT NOTE:**
1774 )))
1775
1776 (((
1777 (% 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:
1778 )))
1779
1780 (((
1781 —Reorient or relocate the receiving antenna.
1782 )))
1783
1784 (((
1785 —Increase the separation between the equipment and receiver.
1786 )))
1787
1788 (((
1789 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1790 )))
1791
1792 (((
1793 —Consult the dealer or an experienced radio/TV technician for help.
1794 )))
1795
1796 (((
1797
1798 )))
1799
1800 (((
1801 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1802 )))
1803
1804 (((
1805 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.
1806 )))
1807
1808
1809
1810 = 11. Support =
1811
1812
1813 * (((
1814 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.
1815 )))
1816 * (((
1817 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]].
1818
1819
1820
1821 )))

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