Version 67.2 by Xiaoling on 2022/07/29 08:38
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20 **Table of Contents:**
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22 {{toc/}}
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27 (% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
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36 = 1.Introduction =
37
38 == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
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45 The Dragino RS485-LN is a (% style="color:blue" %)**RS485 to LoRaWAN Converter**(%%). It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
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51 RS485-LN allows user to (% style="color:blue" %)**monitor / control RS485 devices**(%%) and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
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57 (% style="color:blue" %)**For data uplink**(%%), RS485-LN sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-LN will process these returns according to user-define rules to get the final payload and upload to LoRaWAN server.
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63 (% style="color:blue" %)**For data downlink**(%%), RS485-LN runs in LoRaWAN Class C. When there downlink commands from LoRaWAN server, RS485-LN will forward the commands from LoRaWAN server to RS485 devices.
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67 (% style="color:blue" %)**Demo Dashboard for RS485-LN**(%%) connect to two energy meters: [[https:~~/~~/app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a>>url:https://app.datacake.de/dashboard/d/58844a26-378d-4c5a-aaf5-b5b5b153447a]]
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74 (% aria-label="1653267211009-519.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653267211009-519.png||data-widget="image" height="419" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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76
77 == 1.2 Specifications ==
78
79
80 **Hardware System:**
81
82 * STM32L072CZT6 MCU
83 * SX1276/78 Wireless Chip 
84 * Power Consumption (exclude RS485 device):
85 ** Idle: 32mA@12v
86 ** 20dB Transmit: 65mA@12v
87
88 **Interface for Model:**
89
90 * RS485
91 * Power Input 7~~ 24V DC. 
92
93 **LoRa Spec:**
94
95 * Frequency Range:
96 ** Band 1 (HF): 862 ~~ 1020 Mhz
97 ** Band 2 (LF): 410 ~~ 528 Mhz
98 * 168 dB maximum link budget.
99 * +20 dBm - 100 mW constant RF output vs.
100 * +14 dBm high efficiency PA.
101 * Programmable bit rate up to 300 kbps.
102 * High sensitivity: down to -148 dBm.
103 * Bullet-proof front end: IIP3 = -12.5 dBm.
104 * Excellent blocking immunity.
105 * Low RX current of 10.3 mA, 200 nA register retention.
106 * Fully integrated synthesizer with a resolution of 61 Hz.
107 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
108 * Built-in bit synchronizer for clock recovery.
109 * Preamble detection.
110 * 127 dB Dynamic Range RSSI.
111 * Automatic RF Sense and CAD with ultra-fast AFC.
112 * Packet engine up to 256 bytes with CRC
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116
117 == 1.3 Features ==
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119
120 * LoRaWAN Class A & Class C protocol (default Class C)
121 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
122 * AT Commands to change parameters
123 * Remote configure parameters via LoRa Downlink
124 * Firmware upgradable via program port
125 * Support multiply RS485 devices by flexible rules
126 * Support Modbus protocol
127 * Support Interrupt uplink (Since hardware version v1.2)
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131
132 == 1.4 Applications ==
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134
135 * Smart Buildings & Home Automation
136 * Logistics and Supply Chain Management
137 * Smart Metering
138 * Smart Agriculture
139 * Smart Cities
140 * Smart Factory
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144
145 == 1.5 Firmware Change log ==
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148 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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151
152 == 1.6 Hardware Change log ==
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158 v1.2: Add External Interrupt Pin.
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162 v1.0: Release
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169
170 = 2. Power ON Device =
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174 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
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176 * Power Source VIN to RS485-LN VIN+
177 * Power Source GND to RS485-LN VIN-
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180 Once there is power, the RS485-LN will be on.
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183 (% 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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189 = 3. Operation Mode =
190
191 == 3.1 How it works? ==
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196 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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202
203 == 3.2 Example to join LoRaWAN network ==
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206 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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213 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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217 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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220 (% 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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224 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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228 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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232 Each RS485-LN is shipped with a sticker with unique device EUI:
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236 (% 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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241 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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245 **Add APP EUI in the application.**
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253 (% 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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257 You can also choose to create the device manually.
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259 (% 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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263 **Add APP KEY and DEV EUI**
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265 (% 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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269 (% 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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272 (% 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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275
276 == 3.3 Configure Commands to read data ==
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282 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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288 (% 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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295
296 === 3.3.1 Configure UART settings for RS485 or TTL communication ===
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299 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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301 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
302 |=(% style="width: 110px;" %)(((
303 **AT Commands**
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305 **Description**
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307 **Example**
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309 |(% style="width:110px" %)(((
310 AT+BAUDR
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312 Set the baud rate (for RS485 connection). Default Value is: 9600.
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315 AT+BAUDR=9600
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319 Options: (1200,2400,4800,14400,19200,115200)
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323 AT+PARITY
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325 Set UART parity (for RS485 connection)
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328 AT+PARITY=0
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332 Option: 0: no parity, 1: odd parity, 2: even parity
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335 |(% style="width:110px" %)(((
336 AT+STOPBIT
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339 Set serial stopbit (for RS485 connection)
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347 AT+STOPBIT=0 for 1bit
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351 AT+STOPBIT=1 for 1.5 bit
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355 AT+STOPBIT=2 for 2 bits
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359
360
361 === 3.3.2 Configure sensors ===
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366 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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370 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
371 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
372 |AT+CFGDEV|(% style="width:110px" %)(((
373 (((
374 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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377 (((
378 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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381 (((
382 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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384 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
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386
387
388 === 3.3.3 Configure read commands for each sampling ===
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391 (((
392 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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394 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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396 This section describes how to achieve above goals.
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398 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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400
401 (% style="color:#037691" %)**Each RS485 commands include two parts:**
402
403 ~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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405 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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407 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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410 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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412 Below are examples for the how above AT Commands works.
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414
415 (% 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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417 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
418 |(% style="width:496px" %)(((
419 (% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
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421 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
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423 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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425
426 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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428 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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430
431 (% 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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433 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
434 |(% style="width:510px" %)(((
435 **AT+DATACUTx=a,b,c**
436
437 * **a: length for the return of AT+COMMAND**
438 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
439 * **c: define the position for valid value.  **
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441
442 **Examples:**
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444 * (% style="color:#037691" %)**Grab bytes**
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446 (% 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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449 * (% style="color:#037691" %)**Grab a section**
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452
453
454 * (% style="color:#037691" %)**Grab different sections**
455
456 (% 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" %)​
457
458
459
460 )))
461
462 === 3.3.4 Compose the uplink payload ===
463
464
465 (((
466 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.**
467
468
469 )))
470
471 (((
472 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
473
474
475 )))
476
477 (((
478 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
479 )))
480
481 (((
482 Final Payload is
483 )))
484
485 (((
486 (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
487 )))
488
489 (((
490 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
491 )))
492
493 (% 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" %)​
494
495
496 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
497
498
499 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
500
501 Final Payload is
502
503 (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
504
505
506 1. PAYVER: Defined by AT+PAYVER
507 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
508 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
509 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
510
511 (% 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" %)​
512
513
514 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
515
516 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
517
518 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
519
520 DATA3=the rest of Valid value of RETURN10= **30**
521
522
523 (% 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:**
524
525 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
526
527 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
528
529 * For US915 band, max 11 bytes for each uplink.
530
531 ~* For all other bands: max 51 bytes for each uplink.
532
533
534 Below are the uplink payloads:
535
536 (% 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" %)​
537
538
539
540 === 3.3.5 Uplink on demand ===
541
542
543 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.
544
545 Downlink control command:
546
547 **0x08 command**: Poll an uplink with current command set in RS485-LN.
548
549 **0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
550
551
552
553 === 3.3.6 Uplink on Interrupt ===
554
555
556 RS485-LN support external Interrupt uplink since hardware v1.2 release.
557
558 (% 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" %)​
559
560 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.
561
562
563
564 == 3.4 Uplink Payload ==
565
566
567 (% 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" %)​
568
569 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
570
571
572
573 == 3.5 Configure RS485-LN via AT or Downlink ==
574
575
576 (((
577 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
578 )))
579
580 (((
581 There are two kinds of Commands:
582 )))
583
584 * (((
585 (% 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]]
586 )))
587
588 * (((
589 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
590 )))
591
592 (((
593
594 )))
595
596
597
598 === 3.5.1 Common Commands ===
599
600
601 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]]
602
603
604
605 === 3.5.2 Sensor related commands ===
606
607
608 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.
609
610 (% 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" %)​
611
612 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)
613
614
615
616 === 3.5.3 Sensor related commands ===
617
618
619
620
621 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
622
623 (((
624 This command is used to configure the RS485 devices; they won’t be used during sampling.
625 )))
626
627 * (((
628 (% style="color:#037691" %)**AT Command**
629
630 (((
631 **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
632 )))
633 )))
634
635 (((
636
637 )))
638
639 * (((
640 (% style="color:#037691" %)**Downlink Payload**
641 )))
642
643 (((
644 Format: A8 MM NN XX XX XX XX YY
645 )))
646
647 (((
648 Where:
649 )))
650
651 * (((
652 MM: 1: add CRC-16/MODBUS ; 0: no CRC
653 )))
654 * (((
655 NN: The length of RS485 command
656 )))
657 * (((
658 XX XX XX XX: RS485 command total NN bytes
659 )))
660 * (((
661 (((
662 YY: How many bytes will be uplink from the return of this RS485 command,
663 )))
664
665 * (((
666 if YY=0, RS485-LN will execute the downlink command without uplink;
667 )))
668 * (((
669 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
670 )))
671 * (((
672 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
673 )))
674 )))
675
676 (((
677
678
679 **Example 1**  ~-~-> Configure without ask for uplink (YY=0)
680 )))
681
682 (((
683 To connect a Modbus Alarm with below commands.
684 )))
685
686 * (((
687 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.
688 )))
689
690 * (((
691 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.
692 )))
693
694 (((
695
696
697 So if user want to use downlink command to control to RS485 Alarm, he can use:
698 )))
699
700 (((
701 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
702 )))
703
704 (((
705 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
706 )))
707
708 (((
709 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.
710 )))
711
712 (((
713
714 )))
715
716 (((
717 **Example 2**  ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
718 )))
719
720 (((
721 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
722 )))
723
724 (((
725
726 )))
727
728 (((
729 (((
730 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**
731 )))
732
733
734 )))
735
736 (((
737 (% 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" %)​
738 )))
739
740
741
742
743 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
744
745 (((
746 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.
747 )))
748
749 * (((
750 (% style="color:#037691" %)**AT Command:**
751
752 **AT+PAYVER:    **Set PAYVER field = 1
753
754
755 )))
756 * (((
757 (% style="color:#037691" %)**Downlink Payload:**
758 )))
759
760 (((
761 **0xAE 01**  ~-~->  Set PAYVER field =  0x01
762 )))
763
764 (((
765 **0xAE 0F**   ~-~->  Set PAYVER field =  0x0F
766 )))
767
768
769
770
771 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
772
773 (((
774 AT+COMMANDx or AT+DATACUTx
775 )))
776
777 (((
778 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"]].
779 )))
780
781 (((
782
783 )))
784
785 * (((
786 (% style="color:#037691" %)**AT Command:**
787 )))
788
789 **AT+COMMANDx:    **Configure RS485 read command to sensor.
790
791 **AT+DATACUTx:        **Configure how to handle return from RS485 devices.
792
793
794 * (((
795 (% style="color:#037691" %)**Downlink Payload:**
796 )))
797
798 (((
799 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
800 )))
801
802 (((
803 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
804 )))
805
806 (((
807 Format: AF MM NN LL XX XX XX XX YY
808 )))
809
810 (((
811 Where:
812 )))
813
814 * (((
815 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
816 )))
817 * (((
818 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
819 )))
820 * (((
821 LL:  The length of AT+COMMAND or AT+DATACUT command
822 )))
823 * (((
824 XX XX XX XX: AT+COMMAND or AT+DATACUT command
825 )))
826 * (((
827 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.
828 )))
829
830 (((
831
832
833 **Example:**
834 )))
835
836 (((
837 (% 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
838 )))
839
840 (((
841 (% 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**
842 )))
843
844 (((
845 (% 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**
846 )))
847
848
849
850
851 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
852
853 (((
854 **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]].
855 )))
856
857 (((
858 This command is valid since v1.3 firmware version
859 )))
860
861 (((
862 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.
863 )))
864
865 (((
866
867 )))
868
869 (((
870 **Example:**
871 )))
872
873 * (((
874 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
875 )))
876 * (((
877 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.
878 )))
879 * (((
880 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.
881
882
883 )))
884
885 (% 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" %)​
886
887 (% 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" %)​
888
889
890
891
892 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
893
894 (((
895 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.
896 )))
897
898 (((
899 Default value: 0, range:  0 ~~ 65 seconds
900 )))
901
902 * (((
903 (% style="color:#037691" %)** AT Command:**
904
905 **AT+CMDDLaa=hex(bb cc)*1000**
906 )))
907
908 (((
909
910
911 **Example:**
912 )))
913
914 (((
915 **AT+CMDDL1=1000** to send the open time to 1000ms
916 )))
917
918 (((
919
920 )))
921
922 * (((
923 (% style="color:#037691" %)** Downlink Payload:**
924 )))
925
926 (((
927 **0x AA aa bb cc**
928 )))
929
930 (((
931 Same as: AT+CMDDLaa=hex(bb cc)*1000
932 )))
933
934 (((
935 **Example:**
936 )))
937
938 (((
939 **0xAA 01 00 01**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
940 )))
941
942
943
944
945 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
946
947 (((
948 Define to use one uplink or multiple uplinks for the sampling.
949 )))
950
951 (((
952 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
953
954
955 )))
956
957 * (((
958 (% style="color:#037691" %)** AT Command:**
959 )))
960
961 **AT+DATAUP=0**
962
963 **AT+DATAUP=1**
964
965
966 * (((
967 (% style="color:#037691" %)** Downlink Payload:**
968 )))
969
970 (((
971 **0xAD 00**  **~-~->** Same as AT+DATAUP=0
972 )))
973
974 (((
975 **0xAD 01**  **~-~->** Same as AT+DATAUP=1
976 )))
977
978
979
980
981 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
982
983 (((
984 Ask device to send an uplink immediately.
985 )))
986
987 * (((
988 (% style="color:#037691" %)** AT Command:**
989 )))
990
991 (((
992 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
993 )))
994
995 (((
996
997 )))
998
999 * (((
1000 (% style="color:#037691" %)** Downlink Payload:**
1001 )))
1002
1003 (((
1004 **0x08 FF**, RS485-LN will immediately send an uplink.
1005 )))
1006
1007
1008
1009
1010 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
1011
1012 (((
1013 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1014
1015
1016 )))
1017
1018 * (((
1019 (% style="color:#037691" %)** AT Command:**
1020 )))
1021
1022 (((
1023 **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
1024 )))
1025
1026 (((
1027 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1028 )))
1029
1030 (((
1031 Example screen shot after clear all RS485 commands. 
1032 )))
1033
1034 (((
1035
1036 )))
1037
1038 (((
1039 The uplink screen shot is:
1040 )))
1041
1042 (% 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" %)​
1043
1044
1045 * (((
1046 (% style="color:#037691" %)** Downlink Payload:**
1047 )))
1048
1049 (((
1050 **0x09 aa bb** same as AT+CMDEAR=aa,bb
1051 )))
1052
1053
1054
1055
1056 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1057
1058 (((
1059 Set the Rs485 serial communication parameters:
1060 )))
1061
1062 * (((
1063 (% style="color:#037691" %)** AT Command:**
1064 )))
1065
1066 (((
1067
1068
1069 * Set Baud Rate
1070 )))
1071
1072 **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
1073
1074
1075 (((
1076 * Set UART Parity
1077 )))
1078
1079 **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
1080
1081
1082 (((
1083 * Set STOPBIT
1084 )))
1085
1086 **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1087
1088
1089
1090 * (((
1091 (% style="color:#037691" %)** Downlink Payload:**
1092 )))
1093
1094 (((
1095 **A7 01 aa bb**:  Same  AT+BAUDR=hex(aa bb)*100
1096 )))
1097
1098 (((
1099 **Example:**
1100 )))
1101
1102 * (((
1103 A7 01 00 60   same as AT+BAUDR=9600
1104 )))
1105 * (((
1106 A7 01 04 80  same as AT+BAUDR=115200
1107 )))
1108
1109 (((
1110 A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1111 )))
1112
1113 (((
1114 A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1115 )))
1116
1117
1118
1119
1120 == 3.6 Listening mode for RS485 network ==
1121
1122
1123 (((
1124 This feature support since firmware v1.4
1125 )))
1126
1127 (((
1128 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.
1129
1130
1131 )))
1132
1133 (% 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" %)​
1134
1135 (((
1136 To enable the listening mode, use can run the command AT+RXMODE.
1137 )))
1138
1139 (((
1140
1141 )))
1142
1143 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1144 |=(% style="width: 100px;" %)(((
1145 **Command example**
1146 )))|=(% style="width: 400px;" %)(((
1147 **Function**
1148 )))
1149 |(% style="width:100px" %)(((
1150 AT+RXMODE=1,10
1151 )))|(% style="width:400px" %)(((
1152 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.
1153 )))
1154 |(% style="width:100px" %)(((
1155 AT+RXMODE=2,500
1156 )))|(% style="width:400px" %)(((
1157 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
1158 )))
1159 |(% style="width:100px" %)(((
1160 AT+RXMODE=0,0
1161 )))|(% style="width:400px" %)(((
1162 Disable listening mode. This is the default settings.
1163 )))
1164 |(% style="width:100px" %)(((
1165
1166 )))|(% style="width:400px" %)(((
1167 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1168 )))
1169
1170 (((
1171 (% style="color:#037691" %)** Downlink Command:**
1172 )))
1173
1174 (((
1175 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1176 )))
1177
1178 (((
1179
1180 )))
1181
1182 (((
1183 **Example**:
1184 )))
1185
1186 (((
1187 The RS485-LN is set to AT+RXMODE=2,1000
1188 )))
1189
1190 (((
1191 There is a two Modbus commands in the RS485 network as below:
1192 )))
1193
1194 (((
1195 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1196 )))
1197
1198 (((
1199 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1200 )))
1201
1202 (((
1203 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
1204 )))
1205
1206 (((
1207 (% 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" %)​
1208 )))
1209
1210 (((
1211
1212 )))
1213
1214 (((
1215 (((
1216 (% 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.**
1217 )))
1218 )))
1219
1220
1221
1222 == 3.7 Buttons ==
1223
1224
1225 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1226 |=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1227 |(% 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**
1228 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1229 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1230
1231
1232
1233 == 3.8 LEDs ==
1234
1235
1236 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1237 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1238 |**PWR**|Always on if there is power
1239 |**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.
1240
1241
1242
1243 = 4. Case Study =
1244
1245
1246 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]]
1247
1248
1249
1250 = 5. Use AT Command =
1251
1252 == 5.1 Access AT Command ==
1253
1254
1255 (((
1256 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.
1257 )))
1258
1259 (% 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" %)​
1260
1261
1262 (((
1263 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:
1264 )))
1265
1266 (% 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" %)​
1267
1268
1269 (((
1270 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/]]
1271 )))
1272
1273
1274
1275 == 5.2 Common AT Command Sequence ==
1276
1277
1278 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1279
1280
1281 If device has not joined network yet:
1282
1283 * (% style="color:#037691" %)**AT+FDR**
1284 * (% style="color:#037691" %)**AT+NJM=0**
1285 * (% style="color:#037691" %)**ATZ**
1286
1287 (((
1288
1289
1290 If device already joined network:
1291
1292 * (% style="color:#037691" %)**AT+NJM=0**
1293 * (% style="color:#037691" %)**ATZ**
1294
1295
1296 )))
1297
1298
1299
1300 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1301
1302
1303 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1304
1305 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1306
1307 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1308
1309 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1310
1311 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1312
1313 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1314
1315 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1316
1317 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1318
1319 (% 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.
1320
1321 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1322
1323
1324 (% style="color:red" %)**Note:**
1325
1326 (((
1327 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1328 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1329 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.
1330 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
1331 )))
1332
1333 (% 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" %)​
1334
1335
1336
1337 = 6. FAQ =
1338
1339 == 6.1 How to upgrade the image? ==
1340
1341
1342 (((
1343 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1344 )))
1345
1346 * (((
1347 Support new features
1348 )))
1349 * (((
1350 For bug fix
1351 )))
1352 * (((
1353 Change LoRaWAN bands.
1354 )))
1355
1356 (((
1357 Below shows the hardware connection for how to upload an image to RS485-LN:
1358 )))
1359
1360 (% 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" %)​
1361
1362 (((
1363 (% 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]].
1364 )))
1365
1366 (((
1367 (% 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/]].
1368 )))
1369
1370 (((
1371 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1372 )))
1373
1374 (((
1375 (((
1376 (((
1377 (% 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.
1378 )))
1379 )))
1380 )))
1381
1382
1383 (% 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" %)​
1384
1385
1386 (% 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" %)​
1387
1388
1389 (% 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" %)​
1390
1391
1392 (% 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:**
1393
1394 (% 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" %)​
1395
1396
1397
1398 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1399
1400
1401 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1402
1403
1404
1405 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1406
1407
1408 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"]].
1409
1410
1411
1412 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1413
1414
1415 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1416
1417 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1418
1419
1420
1421 == 6.5 Can i use point to point communication for RS485-LN? ==
1422
1423
1424 Yes, please refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1425
1426
1427
1428 == 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1429
1430
1431 [[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/]]
1432
1433
1434
1435 = 7. Trouble Shooting =
1436
1437
1438 == 7.1 Downlink doesn't work, how to solve it? ==
1439
1440
1441 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1442
1443
1444
1445 == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1446
1447
1448 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1449
1450
1451
1452 = 8. Order Info =
1453
1454
1455 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1456
1457 (% style="color:blue" %)**XXX:**
1458
1459 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1460 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1461 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1462 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1463 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1464 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1465 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1466 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1467 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1468 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1469
1470
1471
1472
1473 = 9.Packing Info =
1474
1475
1476 **Package Includes**:
1477
1478 * RS485-LN x 1
1479 * Stick Antenna for LoRa RF part x 1
1480 * Program cable x 1
1481
1482 **Dimension and weight**:
1483
1484 * Device Size: 13.5 x 7 x 3 cm
1485 * Device Weight: 105g
1486 * Package Size / pcs : 14.5 x 8 x 5 cm
1487 * Weight / pcs : 170g
1488
1489
1490
1491
1492
1493 = 10. FCC Caution for RS485LN-US915 =
1494
1495
1496 (((
1497 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1498 )))
1499
1500 (((
1501 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.
1502 )))
1503
1504 (((
1505
1506 )))
1507
1508 (((
1509 (% style="color:red" %)**IMPORTANT NOTE:**
1510 )))
1511
1512 (((
1513 **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:
1514 )))
1515
1516 (((
1517 —Reorient or relocate the receiving antenna.
1518 )))
1519
1520 (((
1521 —Increase the separation between the equipment and receiver.
1522 )))
1523
1524 (((
1525 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1526 )))
1527
1528 (((
1529 —Consult the dealer or an experienced radio/TV technician for help.
1530 )))
1531
1532 (((
1533
1534 )))
1535
1536 (((
1537 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1538 )))
1539
1540 (((
1541 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.
1542 )))
1543
1544
1545
1546 = 11. Support =
1547
1548
1549 * (((
1550 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.
1551 )))
1552 * (((
1553 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]].
1554 )))

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