Version 63.1 by Xiaoling on 2022/06/30 10:35
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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" %)​
75
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
113
114
115 == 1.3 Features ==
116
117 * LoRaWAN Class A & Class C protocol (default Class C)
118 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
119 * AT Commands to change parameters
120 * Remote configure parameters via LoRa Downlink
121 * Firmware upgradable via program port
122 * Support multiply RS485 devices by flexible rules
123 * Support Modbus protocol
124 * Support Interrupt uplink (Since hardware version v1.2)
125
126
127 == 1.4 Applications ==
128
129 * Smart Buildings & Home Automation
130 * Logistics and Supply Chain Management
131 * Smart Metering
132 * Smart Agriculture
133 * Smart Cities
134 * Smart Factory
135
136
137 == 1.5 Firmware Change log ==
138
139 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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141
142 == 1.6 Hardware Change log ==
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147 v1.2: Add External Interrupt Pin.
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151 v1.0: Release
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157
158 = 2. Power ON Device =
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161 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
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163 * Power Source VIN to RS485-LN VIN+
164 * Power Source GND to RS485-LN VIN-
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167 Once there is power, the RS485-LN will be on.
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170 (% 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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174
175 = 3. Operation Mode =
176
177 == 3.1 How it works? ==
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181 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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186
187 == 3.2 Example to join LoRaWAN network ==
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189 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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191 (% 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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196 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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200 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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203 (% 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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207 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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211 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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215 Each RS485-LN is shipped with a sticker with unique device EUI:
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219 (% 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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224 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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228 **Add APP EUI in the application.**
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234 (% 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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236 (% 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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238 (% 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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240 You can also choose to create the device manually.
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242 (% 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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246 **Add APP KEY and DEV EUI**
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248 (% 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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252 (% 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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255 (% 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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257
258 == 3.3 Configure Commands to read data ==
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260 (((
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263 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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269 (% 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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275
276 === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
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278 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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280 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
281 |=(% style="width: 110px;" %)(((
282 **AT Commands**
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284 **Description**
285 )))|=(% style="width: 190px;" %)(((
286 **Example**
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289 AT+BAUDR
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291 Set the baud rate (for RS485 connection). Default Value is: 9600.
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294 AT+BAUDR=9600
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298 Options: (1200,2400,4800,14400,19200,115200)
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302 AT+PARITY
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304 Set UART parity (for RS485 connection)
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307 AT+PARITY=0
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311 Option: 0: no parity, 1: odd parity, 2: even parity
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315 AT+STOPBIT
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318 Set serial stopbit (for RS485 connection)
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326 AT+STOPBIT=0 for 1bit
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330 AT+STOPBIT=1 for 1.5 bit
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334 AT+STOPBIT=2 for 2 bits
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338
339 === 3.3.2 Configure sensors ===
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343 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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347 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
348 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
349 |AT+CFGDEV|(% style="width:110px" %)(((
350 (((
351 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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355 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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359 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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361 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
362
363 === 3.3.3 Configure read commands for each sampling ===
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365 (((
366 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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368 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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370 This section describes how to achieve above goals.
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372 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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374
375 (% style="color:#037691" %)**Each RS485 commands include two parts:**
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377 ~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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379 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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381 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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384 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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386 Below are examples for the how above AT Commands works.
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388
389 (% 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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391 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
392 |(% style="width:496px" %)(((
393 (% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
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395 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
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397 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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399
400 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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402 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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404
405 (% 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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407 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
408 |(% style="width:510px" %)(((
409 **AT+DATACUTx=a,b,c**
410
411 * **a: length for the return of AT+COMMAND**
412 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
413 * **c: define the position for valid value.  **
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415
416 **Examples:**
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418 * (% style="color:#037691" %)**Grab bytes**
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420 (% 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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423 * (% style="color:#037691" %)**Grab a section**
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425 (% 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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427
428 * (% style="color:#037691" %)**Grab different sections**
429
430 (% 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" %)​
431
432
433
434 )))
435
436 === 3.3.4 Compose the uplink payload ===
437
438 (((
439 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.**
440
441
442 )))
443
444 (((
445 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
446
447
448 )))
449
450 (((
451 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
452 )))
453
454 (((
455 Final Payload is
456 )))
457
458 (((
459 (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
460 )))
461
462 (((
463 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
464 )))
465
466 (% 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" %)​
467
468
469 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
470
471
472 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
473
474 Final Payload is
475
476 (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
477
478
479 1. PAYVER: Defined by AT+PAYVER
480 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
481 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
482 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
483
484 (% 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" %)​
485
486
487 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
488
489 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
490
491 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
492
493 DATA3=the rest of Valid value of RETURN10= **30**
494
495
496 (% 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:
497
498 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
499
500 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
501
502 * For US915 band, max 11 bytes for each uplink.
503
504 ~* For all other bands: max 51 bytes for each uplink.
505
506
507 Below are the uplink payloads:
508
509 (% 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" %)​
510
511
512
513 === 3.3.5 Uplink on demand ===
514
515 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.
516
517 Downlink control command:
518
519 **0x08 command**: Poll an uplink with current command set in RS485-LN.
520
521 **0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
522
523
524
525 === 3.3.6 Uplink on Interrupt ===
526
527 RS485-LN support external Interrupt uplink since hardware v1.2 release.
528
529 (% 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" %)​
530
531 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.
532
533
534 == 3.4 Uplink Payload ==
535
536
537 (% 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" %)​
538
539 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
540
541
542 == 3.5 Configure RS485-LN via AT or Downlink ==
543
544 (((
545 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
546 )))
547
548 (((
549 There are two kinds of Commands:
550 )))
551
552 * (((
553 (% 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]]
554 )))
555
556 * (((
557 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
558 )))
559
560 (((
561
562 )))
563
564
565 === 3.5.1 Common Commands ===
566
567 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]]
568
569
570 === 3.5.2 Sensor related commands ===
571
572 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.
573
574 (% 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" %)​
575
576 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)
577
578
579
580 === 3.5.3 Sensor related commands ===
581
582
583
584
585 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
586
587 (((
588 This command is used to configure the RS485 devices; they won’t be used during sampling.
589 )))
590
591 * (((
592 (% style="color:#037691" %)**AT Command**
593
594 (((
595 **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
596 )))
597 )))
598
599 (((
600
601 )))
602
603 * (((
604 (% style="color:#037691" %)**Downlink Payload**
605 )))
606
607 (((
608 Format: A8 MM NN XX XX XX XX YY
609 )))
610
611 (((
612 Where:
613 )))
614
615 * (((
616 MM: 1: add CRC-16/MODBUS ; 0: no CRC
617 )))
618 * (((
619 NN: The length of RS485 command
620 )))
621 * (((
622 XX XX XX XX: RS485 command total NN bytes
623 )))
624 * (((
625 (((
626 YY: How many bytes will be uplink from the return of this RS485 command,
627 )))
628
629 * (((
630 if YY=0, RS485-LN will execute the downlink command without uplink;
631 )))
632 * (((
633 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
634 )))
635 * (((
636 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
637 )))
638 )))
639
640 (((
641
642
643 **Example 1**  ~-~-> Configure without ask for uplink (YY=0)
644 )))
645
646 (((
647 To connect a Modbus Alarm with below commands.
648 )))
649
650 * (((
651 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.
652 )))
653
654 * (((
655 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.
656 )))
657
658 (((
659
660
661 So if user want to use downlink command to control to RS485 Alarm, he can use:
662 )))
663
664 (((
665 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
666 )))
667
668 (((
669 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
670 )))
671
672 (((
673 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.
674 )))
675
676 (((
677
678 )))
679
680 (((
681 **Example 2**  ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
682 )))
683
684 (((
685 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
686 )))
687
688 (((
689
690 )))
691
692 (((
693 (((
694 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**
695 )))
696
697
698 )))
699
700 (((
701 (% 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" %)​
702 )))
703
704
705
706
707 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
708
709 (((
710 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.
711 )))
712
713 * (((
714 (% style="color:#037691" %)**AT Command:**
715
716 **AT+PAYVER:    **Set PAYVER field = 1
717
718
719 )))
720 * (((
721 (% style="color:#037691" %)**Downlink Payload:**
722 )))
723
724 (((
725 **0xAE 01**  ~-~->  Set PAYVER field =  0x01
726 )))
727
728 (((
729 **0xAE 0F**   ~-~->  Set PAYVER field =  0x0F
730 )))
731
732
733
734
735 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
736
737 (((
738 AT+COMMANDx or AT+DATACUTx
739 )))
740
741 (((
742 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"]].
743 )))
744
745 (((
746
747 )))
748
749 * (((
750 (% style="color:#037691" %)**AT Command:**
751 )))
752
753 **AT+COMMANDx:    **Configure RS485 read command to sensor.
754
755 **AT+DATACUTx:        **Configure how to handle return from RS485 devices.
756
757
758 * (((
759 (% style="color:#037691" %)**Downlink Payload:**
760 )))
761
762 (((
763 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
764 )))
765
766 (((
767 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
768 )))
769
770 (((
771 Format: AF MM NN LL XX XX XX XX YY
772 )))
773
774 (((
775 Where:
776 )))
777
778 * (((
779 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
780 )))
781 * (((
782 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
783 )))
784 * (((
785 LL:  The length of AT+COMMAND or AT+DATACUT command
786 )))
787 * (((
788 XX XX XX XX: AT+COMMAND or AT+DATACUT command
789 )))
790 * (((
791 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.
792 )))
793
794 (((
795
796
797 **Example:**
798 )))
799
800 (((
801 (% 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
802 )))
803
804 (((
805 (% 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**
806 )))
807
808 (((
809 (% 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**
810 )))
811
812
813
814
815 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
816
817 (((
818 **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]].
819 )))
820
821 (((
822 This command is valid since v1.3 firmware version
823 )))
824
825 (((
826 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.
827 )))
828
829 (((
830
831 )))
832
833 (((
834 **Example:**
835 )))
836
837 * (((
838 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
839 )))
840 * (((
841 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.
842 )))
843 * (((
844 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.
845
846
847 )))
848
849 (% 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" %)​
850
851 (% 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" %)​
852
853
854
855
856 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
857
858 (((
859 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.
860 )))
861
862 (((
863 Default value: 0, range:  0 ~~ 65 seconds
864 )))
865
866 * (((
867 (% style="color:#037691" %)** AT Command:**
868
869 **AT+CMDDLaa=hex(bb cc)*1000**
870 )))
871
872 (((
873
874
875 **Example:**
876 )))
877
878 (((
879 **AT+CMDDL1=1000** to send the open time to 1000ms
880 )))
881
882 (((
883
884 )))
885
886 * (((
887 (% style="color:#037691" %)** Downlink Payload:**
888 )))
889
890 (((
891 **0x AA aa bb cc**
892 )))
893
894 (((
895 Same as: AT+CMDDLaa=hex(bb cc)*1000
896 )))
897
898 (((
899 **Example:**
900 )))
901
902 (((
903 **0xAA 01 00 01**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
904 )))
905
906
907
908
909 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
910
911 (((
912 Define to use one uplink or multiple uplinks for the sampling.
913 )))
914
915 (((
916 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
917
918
919 )))
920
921 * (((
922 (% style="color:#037691" %)** AT Command:**
923 )))
924
925 **AT+DATAUP=0**
926
927 **AT+DATAUP=1**
928
929
930 * (((
931 (% style="color:#037691" %)** Downlink Payload:**
932 )))
933
934 (((
935 **0xAD 00**  **~-~->** Same as AT+DATAUP=0
936 )))
937
938 (((
939 **0xAD 01**  **~-~->** Same as AT+DATAUP=1
940 )))
941
942
943
944
945 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
946
947 (((
948 Ask device to send an uplink immediately.
949 )))
950
951 * (((
952 (% style="color:#037691" %)** AT Command:**
953 )))
954
955 (((
956 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
957 )))
958
959 (((
960
961 )))
962
963 * (((
964 (% style="color:#037691" %)** Downlink Payload:**
965 )))
966
967 (((
968 **0x08 FF**, RS485-LN will immediately send an uplink.
969 )))
970
971
972
973
974 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
975
976 (((
977 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
978
979
980 )))
981
982 * (((
983 (% style="color:#037691" %)** AT Command:**
984 )))
985
986 (((
987 **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
988 )))
989
990 (((
991 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
992 )))
993
994 (((
995 Example screen shot after clear all RS485 commands. 
996 )))
997
998 (((
999
1000 )))
1001
1002 (((
1003 The uplink screen shot is:
1004 )))
1005
1006 (% 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" %)​
1007
1008
1009 * (((
1010 (% style="color:#037691" %)** Downlink Payload:**
1011 )))
1012
1013 (((
1014 **0x09 aa bb** same as AT+CMDEAR=aa,bb
1015 )))
1016
1017
1018
1019
1020 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1021
1022 (((
1023 Set the Rs485 serial communication parameters:
1024 )))
1025
1026 * (((
1027 (% style="color:#037691" %)** AT Command:**
1028 )))
1029
1030 (((
1031
1032
1033 * Set Baud Rate
1034 )))
1035
1036 **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
1037
1038
1039 (((
1040 * Set UART Parity
1041 )))
1042
1043 **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
1044
1045
1046 (((
1047 * Set STOPBIT
1048 )))
1049
1050 **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1051
1052
1053
1054 * (((
1055 (% style="color:#037691" %)** Downlink Payload:**
1056 )))
1057
1058 (((
1059 **A7 01 aa bb**:  Same  AT+BAUDR=hex(aa bb)*100
1060 )))
1061
1062 (((
1063 **Example:**
1064 )))
1065
1066 * (((
1067 A7 01 00 60   same as AT+BAUDR=9600
1068 )))
1069 * (((
1070 A7 01 04 80  same as AT+BAUDR=115200
1071 )))
1072
1073 (((
1074 A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1075 )))
1076
1077 (((
1078 A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1079 )))
1080
1081
1082
1083
1084 == 3.6 Listening mode for RS485 network ==
1085
1086 (((
1087 This feature support since firmware v1.4
1088 )))
1089
1090 (((
1091 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.
1092 )))
1093
1094 (% 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" %)​
1095
1096 (((
1097 To enable the listening mode, use can run the command AT+RXMODE.
1098 )))
1099
1100 (((
1101
1102 )))
1103
1104 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1105 |=(% style="width: 100px;" %)(((
1106 **Command example**
1107 )))|=(% style="width: 400px;" %)(((
1108 **Function**
1109 )))
1110 |(% style="width:100px" %)(((
1111 AT+RXMODE=1,10
1112 )))|(% style="width:400px" %)(((
1113 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.
1114 )))
1115 |(% style="width:100px" %)(((
1116 AT+RXMODE=2,500
1117 )))|(% style="width:400px" %)(((
1118 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
1119 )))
1120 |(% style="width:100px" %)(((
1121 AT+RXMODE=0,0
1122 )))|(% style="width:400px" %)(((
1123 Disable listening mode. This is the default settings.
1124 )))
1125 |(% style="width:100px" %)(((
1126
1127 )))|(% style="width:400px" %)(((
1128 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1129 )))
1130
1131 (((
1132 (% style="color:#037691" %)** Downlink Command:**
1133 )))
1134
1135 (((
1136 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1137 )))
1138
1139 (((
1140
1141 )))
1142
1143 (((
1144 **Example**:
1145 )))
1146
1147 (((
1148 The RS485-LN is set to AT+RXMODE=2,1000
1149 )))
1150
1151 (((
1152 There is a two Modbus commands in the RS485 network as below:
1153 )))
1154
1155 (((
1156 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1157 )))
1158
1159 (((
1160 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1161 )))
1162
1163 (((
1164 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
1165 )))
1166
1167 (((
1168 (% 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" %)​
1169 )))
1170
1171 (((
1172
1173 )))
1174
1175 (((
1176 (((
1177 (% 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.
1178 )))
1179 )))
1180
1181
1182 == 3.7 Buttons ==
1183
1184
1185 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1186 |=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1187 |(% 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**
1188 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1189 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1190
1191
1192
1193 == 3.8 LEDs ==
1194
1195
1196 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1197 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1198 |**PWR**|Always on if there is power
1199 |**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.
1200
1201
1202
1203 = 4. Case Study =
1204
1205 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]]
1206
1207
1208 = 5. Use AT Command =
1209
1210 == 5.1 Access AT Command ==
1211
1212 (((
1213 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.
1214 )))
1215
1216 (% 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" %)​
1217
1218
1219 (((
1220 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:
1221 )))
1222
1223 (% 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" %)​
1224
1225
1226 (((
1227 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/]]
1228 )))
1229
1230
1231
1232 == 5.2 Common AT Command Sequence ==
1233
1234
1235 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1236
1237 If device has not joined network yet:
1238
1239 * (% style="color:#037691" %)**AT+FDR**
1240 * (% style="color:#037691" %)**AT+NJM=0**
1241 * (% style="color:#037691" %)**ATZ**
1242
1243 (((
1244
1245
1246 If device already joined network:
1247
1248 * (% style="color:#037691" %)**AT+NJM=0**
1249 * (% style="color:#037691" %)**ATZ**
1250
1251
1252 )))
1253
1254
1255 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1256
1257
1258 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1259
1260 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1261
1262 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1263
1264 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1265
1266 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1267
1268 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1269
1270 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1271
1272 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1273
1274 (% 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.
1275
1276 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1277
1278
1279 (% style="color:red" %)**Note:**
1280
1281 (((
1282 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1283 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1284 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.
1285 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
1286 )))
1287
1288 (% 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" %)​
1289
1290
1291 = 6. FAQ =
1292
1293 == 6.1 How to upgrade the image? ==
1294
1295 (((
1296 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1297 )))
1298
1299 * (((
1300 Support new features
1301 )))
1302 * (((
1303 For bug fix
1304 )))
1305 * (((
1306 Change LoRaWAN bands.
1307 )))
1308
1309 (((
1310 Below shows the hardware connection for how to upload an image to RS485-LN:
1311 )))
1312
1313 (% 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" %)​
1314
1315 (((
1316 (% 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]].
1317 )))
1318
1319 (((
1320 (% 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/]].
1321 )))
1322
1323 (((
1324 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1325 )))
1326
1327 (((
1328 (((
1329 (((
1330 (% 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.
1331 )))
1332 )))
1333 )))
1334
1335
1336 (% 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" %)​
1337
1338
1339 (% 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" %)​
1340
1341
1342 (% 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" %)​
1343
1344
1345 (% 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:
1346
1347 (% 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" %)​
1348
1349
1350 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1351
1352 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1353
1354
1355 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1356
1357 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"]].
1358
1359
1360 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1361
1362 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1363
1364 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1365
1366
1367 = 7. Trouble Shooting =
1368
1369 == 7.1 Downlink doesn't work, how to solve it? ==
1370
1371 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1372
1373
1374 == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1375
1376 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1377
1378
1379 = 8. Order Info =
1380
1381 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1382
1383 (% style="color:blue" %)**XXX:**
1384
1385 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1386 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1387 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1388 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1389 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1390 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1391 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1392 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1393 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1394 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1395
1396
1397
1398 = 9.Packing Info =
1399
1400
1401 **Package Includes**:
1402
1403 * RS485-LN x 1
1404 * Stick Antenna for LoRa RF part x 1
1405 * Program cable x 1
1406
1407 **Dimension and weight**:
1408
1409 * Device Size: 13.5 x 7 x 3 cm
1410 * Device Weight: 105g
1411 * Package Size / pcs : 14.5 x 8 x 5 cm
1412 * Weight / pcs : 170g
1413
1414
1415
1416 = 10. FCC Caution for RS485LN-US915 =
1417
1418 (((
1419 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1420 )))
1421
1422 (((
1423 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.
1424 )))
1425
1426 (((
1427
1428 )))
1429
1430 (((
1431 (% style="color:red" %)**IMPORTANT NOTE:**
1432 )))
1433
1434 (((
1435 **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:
1436 )))
1437
1438 (((
1439 —Reorient or relocate the receiving antenna.
1440 )))
1441
1442 (((
1443 —Increase the separation between the equipment and receiver.
1444 )))
1445
1446 (((
1447 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1448 )))
1449
1450 (((
1451 —Consult the dealer or an experienced radio/TV technician for help.
1452 )))
1453
1454 (((
1455
1456 )))
1457
1458 (((
1459 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1460 )))
1461
1462 (((
1463 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.
1464 )))
1465
1466
1467 = 11. Support =
1468
1469 * (((
1470 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.
1471 )))
1472 * (((
1473 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]].
1474 )))

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