Version 62.2 by Xiaoling on 2022/06/30 09:58
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6 (% 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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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
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115
116 == 1.3 Features ==
117
118 * LoRaWAN Class A & Class C protocol (default Class C)
119 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
120 * AT Commands to change parameters
121 * Remote configure parameters via LoRa Downlink
122 * Firmware upgradable via program port
123 * Support multiply RS485 devices by flexible rules
124 * Support Modbus protocol
125 * Support Interrupt uplink (Since hardware version v1.2)
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127
128
129 == 1.4 Applications ==
130
131 * Smart Buildings & Home Automation
132 * Logistics and Supply Chain Management
133 * Smart Metering
134 * Smart Agriculture
135 * Smart Cities
136 * Smart Factory
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138
139
140 == 1.5 Firmware Change log ==
141
142 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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144
145 == 1.6 Hardware Change log ==
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150 v1.2: Add External Interrupt Pin.
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154 v1.0: Release
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160
161 = 2. Power ON Device =
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164 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
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166 * Power Source VIN to RS485-LN VIN+
167 * Power Source GND to RS485-LN VIN-
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170 Once there is power, the RS485-LN will be on.
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173 (% 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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177
178 = 3. Operation Mode =
179
180 == 3.1 How it works? ==
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184 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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189
190 == 3.2 Example to join LoRaWAN network ==
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192 Here shows an example for how to join the TTN V3 Network. Below is the network structure, we use [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]] as LoRaWAN gateway here. 
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194 (% 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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199 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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203 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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206 (% 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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210 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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214 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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218 Each RS485-LN is shipped with a sticker with unique device EUI:
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222 (% 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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227 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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231 **Add APP EUI in the application.**
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235 (% aria-label="image-20220519174512-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-1.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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237 (% 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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239 (% 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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241 (% 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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243 You can also choose to create the device manually.
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245 (% 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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249 **Add APP KEY and DEV EUI**
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251 (% 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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255 (% 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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258 (% 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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260
261 == 3.3 Configure Commands to read data ==
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263 (((
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266 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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272 (% 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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278
279 === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
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281 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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283 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
284 |=(% style="width: 110px;" %)(((
285 **AT Commands**
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287 **Description**
288 )))|=(% style="width: 190px;" %)(((
289 **Example**
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291 |(% style="width:110px" %)(((
292 AT+BAUDR
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294 Set the baud rate (for RS485 connection). Default Value is: 9600.
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297 AT+BAUDR=9600
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301 Options: (1200,2400,4800,14400,19200,115200)
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305 AT+PARITY
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307 Set UART parity (for RS485 connection)
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310 AT+PARITY=0
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314 Option: 0: no parity, 1: odd parity, 2: even parity
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318 AT+STOPBIT
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321 Set serial stopbit (for RS485 connection)
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329 AT+STOPBIT=0 for 1bit
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333 AT+STOPBIT=1 for 1.5 bit
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337 AT+STOPBIT=2 for 2 bits
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340
341 === 3.3.2 Configure sensors ===
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345 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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349 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
350 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
351 |AT+CFGDEV|(% style="width:110px" %)(((
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353 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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356 (((
357 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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360 (((
361 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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363 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
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365
366 === 3.3.3 Configure read commands for each sampling ===
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368 (((
369 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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371 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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373 This section describes how to achieve above goals.
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375 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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377
378 (% style="color:#037691" %)**Each RS485 commands include two parts:**
379
380 ~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.
381
382 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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384 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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386
387 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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389 Below are examples for the how above AT Commands works.
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391
392 (% 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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394 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
395 |(% style="width:496px" %)(((
396 (% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
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398 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
399
400 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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402
403 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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405 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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407
408 (% 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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410 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
411 |(% style="width:510px" %)(((
412 **AT+DATACUTx=a,b,c**
413
414 * **a: length for the return of AT+COMMAND**
415 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
416 * **c: define the position for valid value.  **
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418
419 **Examples:**
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421 * (% style="color:#037691" %)**Grab bytes**
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423 (% 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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426 * (% style="color:#037691" %)**Grab a section**
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428 (% 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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430
431 * (% style="color:#037691" %)**Grab different sections**
432
433 (% 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" %)​
434
435
436
437 )))
438
439 === 3.3.4 Compose the uplink payload ===
440
441 (((
442 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.**
443
444
445 )))
446
447 (((
448 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
449
450
451 )))
452
453 (((
454 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
455 )))
456
457 (((
458 Final Payload is
459 )))
460
461 (((
462 (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
463 )))
464
465 (((
466 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
467 )))
468
469 (% 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" %)​
470
471
472 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
473
474
475 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
476
477 Final Payload is
478
479 (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
480
481
482 1. PAYVER: Defined by AT+PAYVER
483 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
484 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
485 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
486
487 (% 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" %)​
488
489
490 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
491
492 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
493
494 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
495
496 DATA3=the rest of Valid value of RETURN10= **30**
497
498
499 (% 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:
500
501 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
502
503 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
504
505 * For US915 band, max 11 bytes for each uplink.
506
507 ~* For all other bands: max 51 bytes for each uplink.
508
509
510 Below are the uplink payloads:
511
512 (% 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" %)​
513
514
515
516 === 3.3.5 Uplink on demand ===
517
518 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.
519
520 Downlink control command:
521
522 **0x08 command**: Poll an uplink with current command set in RS485-LN.
523
524 **0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
525
526
527
528 === 3.3.6 Uplink on Interrupt ===
529
530 RS485-LN support external Interrupt uplink since hardware v1.2 release.
531
532 (% 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" %)​
533
534 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.
535
536
537 == 3.4 Uplink Payload ==
538
539
540 (% 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" %)​
541
542 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
543
544
545 == 3.5 Configure RS485-LN via AT or Downlink ==
546
547 (((
548 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
549 )))
550
551 (((
552 There are two kinds of Commands:
553 )))
554
555 * (((
556 (% 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]]
557 )))
558
559 * (((
560 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
561 )))
562
563 (((
564
565 )))
566
567
568 === 3.5.1 Common Commands ===
569
570 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]]
571
572
573 === 3.5.2 Sensor related commands ===
574
575 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.
576
577 (% 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"]](% style="background:url(~"http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
578
579 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)
580
581
582 === 3.5.3 Sensor related commands ===
583
584
585
586
587 ==== (% style="color:#037691" %)**RS485 Debug Command**(%%) ====
588
589 (((
590 This command is used to configure the RS485 devices; they won’t be used during sampling.
591 )))
592
593 * (((
594 (% style="color:#037691" %)**AT Command**
595
596 (((
597 **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
598 )))
599 )))
600
601 (((
602
603 )))
604
605 * (((
606 (% style="color:#037691" %)**Downlink Payload**
607 )))
608
609 (((
610 Format: A8 MM NN XX XX XX XX YY
611 )))
612
613 (((
614 Where:
615 )))
616
617 * (((
618 MM: 1: add CRC-16/MODBUS ; 0: no CRC
619 )))
620 * (((
621 NN: The length of RS485 command
622 )))
623 * (((
624 XX XX XX XX: RS485 command total NN bytes
625 )))
626 * (((
627 (((
628 YY: How many bytes will be uplink from the return of this RS485 command,
629 )))
630
631 * (((
632 if YY=0, RS485-LN will execute the downlink command without uplink;
633 )))
634 * (((
635 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
636 )))
637 * (((
638 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
639 )))
640 )))
641
642 (((
643
644
645 **Example 1**  ~-~-> Configure without ask for uplink (YY=0)
646 )))
647
648 (((
649 To connect a Modbus Alarm with below commands.
650 )))
651
652 * (((
653 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.
654 )))
655
656 * (((
657 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.
658 )))
659
660 (((
661
662
663 So if user want to use downlink command to control to RS485 Alarm, he can use:
664 )))
665
666 (((
667 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
668 )))
669
670 (((
671 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
672 )))
673
674 (((
675 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.
676 )))
677
678 (((
679
680 )))
681
682 (((
683 **Example 2**  ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
684 )))
685
686 (((
687 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
688 )))
689
690 (((
691
692 )))
693
694 (((
695 (((
696 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**
697 )))
698
699
700 )))
701
702 (((
703 (% 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" %)​
704 )))
705
706
707
708
709 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
710
711 (((
712 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.
713 )))
714
715 * (((
716 (% style="color:#037691" %)**AT Command:**
717
718 **AT+PAYVER:    **Set PAYVER field = 1
719
720
721 )))
722 * (((
723 (% style="color:#037691" %)**Downlink Payload:**
724 )))
725
726 (((
727 **0xAE 01**  ~-~->  Set PAYVER field =  0x01
728 )))
729
730 (((
731 **0xAE 0F**   ~-~->  Set PAYVER field =  0x0F
732 )))
733
734
735
736
737 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
738
739 (((
740 AT+COMMANDx or AT+DATACUTx
741 )))
742
743 (((
744 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"]].
745 )))
746
747 (((
748
749 )))
750
751 * (((
752 (% style="color:#037691" %)**AT Command:**
753 )))
754
755 **AT+COMMANDx:    **Configure RS485 read command to sensor.
756
757 **AT+DATACUTx:        **Configure how to handle return from RS485 devices.
758
759
760 * (((
761 (% style="color:#037691" %)**Downlink Payload:**
762 )))
763
764 (((
765 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
766 )))
767
768 (((
769 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
770 )))
771
772 (((
773 Format: AF MM NN LL XX XX XX XX YY
774 )))
775
776 (((
777 Where:
778 )))
779
780 * (((
781 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
782 )))
783 * (((
784 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
785 )))
786 * (((
787 LL:  The length of AT+COMMAND or AT+DATACUT command
788 )))
789 * (((
790 XX XX XX XX: AT+COMMAND or AT+DATACUT command
791 )))
792 * (((
793 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.
794 )))
795
796 (((
797
798
799 **Example:**
800 )))
801
802 (((
803 (% 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
804 )))
805
806 (((
807 (% 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**
808 )))
809
810 (((
811 (% 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**
812 )))
813
814
815
816
817 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
818
819 (((
820 **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]].
821 )))
822
823 (((
824 This command is valid since v1.3 firmware version
825 )))
826
827 (((
828 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.
829 )))
830
831 (((
832
833 )))
834
835 (((
836 **Example:**
837 )))
838
839 * (((
840 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
841 )))
842 * (((
843 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.
844 )))
845 * (((
846 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.
847
848
849 )))
850
851 (% 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" %)​
852
853 (% 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" %)​
854
855
856
857
858 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
859
860 (((
861 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.
862 )))
863
864 (((
865 Default value: 0, range:  0 ~~ 65 seconds
866 )))
867
868 * (((
869 (% style="color:#037691" %)** AT Command:**
870
871 **AT+CMDDLaa=hex(bb cc)*1000**
872 )))
873
874 (((
875
876
877 **Example:**
878 )))
879
880 (((
881 **AT+CMDDL1=1000** to send the open time to 1000ms
882 )))
883
884 (((
885
886 )))
887
888 * (((
889 (% style="color:#037691" %)** Downlink Payload:**
890 )))
891
892 (((
893 **0x AA aa bb cc**
894 )))
895
896 (((
897 Same as: AT+CMDDLaa=hex(bb cc)*1000
898 )))
899
900 (((
901 **Example:**
902 )))
903
904 (((
905 **0xAA 01 00 01**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
906 )))
907
908
909
910
911 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
912
913 (((
914 Define to use one uplink or multiple uplinks for the sampling.
915 )))
916
917 (((
918 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
919
920
921 )))
922
923 * (((
924 (% style="color:#037691" %)** AT Command:**
925 )))
926
927 **AT+DATAUP=0**
928
929 **AT+DATAUP=1**
930
931
932 * (((
933 (% style="color:#037691" %)** Downlink Payload:**
934 )))
935
936 (((
937 **0xAD 00**  **~-~->** Same as AT+DATAUP=0
938 )))
939
940 (((
941 **0xAD 01**  **~-~->** Same as AT+DATAUP=1
942 )))
943
944
945
946
947 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
948
949 (((
950 Ask device to send an uplink immediately.
951 )))
952
953 * (((
954 (% style="color:#037691" %)** AT Command:**
955 )))
956
957 (((
958 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
959 )))
960
961 (((
962
963 )))
964
965 * (((
966 (% style="color:#037691" %)** Downlink Payload:**
967 )))
968
969 (((
970 **0x08 FF**, RS485-LN will immediately send an uplink.
971 )))
972
973
974
975
976 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
977
978 (((
979 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
980
981
982 )))
983
984 * (((
985 (% style="color:#037691" %)** AT Command:**
986 )))
987
988 (((
989 **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
990 )))
991
992 (((
993 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
994 )))
995
996 (((
997 Example screen shot after clear all RS485 commands. 
998 )))
999
1000 (((
1001
1002 )))
1003
1004 (((
1005 The uplink screen shot is:
1006 )))
1007
1008 (% 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" %)​
1009
1010
1011 * (((
1012 (% style="color:#037691" %)** Downlink Payload:**
1013 )))
1014
1015 (((
1016 **0x09 aa bb** same as AT+CMDEAR=aa,bb
1017 )))
1018
1019
1020
1021
1022 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1023
1024 (((
1025 Set the Rs485 serial communication parameters:
1026 )))
1027
1028 * (((
1029 (% style="color:#037691" %)** AT Command:**
1030 )))
1031
1032 (((
1033
1034
1035 * Set Baud Rate
1036 )))
1037
1038 **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
1039
1040
1041 (((
1042 * Set UART Parity
1043 )))
1044
1045 **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
1046
1047
1048 (((
1049 * Set STOPBIT
1050 )))
1051
1052 **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1053
1054
1055
1056 * (((
1057 (% style="color:#037691" %)** Downlink Payload:**
1058 )))
1059
1060 (((
1061 **A7 01 aa bb**:  Same  AT+BAUDR=hex(aa bb)*100
1062 )))
1063
1064 (((
1065 **Example:**
1066 )))
1067
1068 * (((
1069 A7 01 00 60   same as AT+BAUDR=9600
1070 )))
1071 * (((
1072 A7 01 04 80  same as AT+BAUDR=115200
1073 )))
1074
1075 (((
1076 A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1077 )))
1078
1079 (((
1080 A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1081 )))
1082
1083
1084
1085
1086 == 3.6 Listening mode for RS485 network ==
1087
1088 (((
1089 This feature support since firmware v1.4
1090 )))
1091
1092 (((
1093 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.
1094 )))
1095
1096 (% 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" %)​
1097
1098 (((
1099 To enable the listening mode, use can run the command AT+RXMODE.
1100 )))
1101
1102 (((
1103
1104 )))
1105
1106 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1107 |=(% style="width: 100px;" %)(((
1108 **Command example**
1109 )))|=(% style="width: 400px;" %)(((
1110 **Function**
1111 )))
1112 |(% style="width:100px" %)(((
1113 AT+RXMODE=1,10
1114 )))|(% style="width:400px" %)(((
1115 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.
1116 )))
1117 |(% style="width:100px" %)(((
1118 AT+RXMODE=2,500
1119 )))|(% style="width:400px" %)(((
1120 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
1121 )))
1122 |(% style="width:100px" %)(((
1123 AT+RXMODE=0,0
1124 )))|(% style="width:400px" %)(((
1125 Disable listening mode. This is the default settings.
1126 )))
1127 |(% style="width:100px" %)(((
1128
1129 )))|(% style="width:400px" %)(((
1130 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1131 )))
1132
1133 (((
1134 (% style="color:#037691" %)** Downlink Command:**
1135 )))
1136
1137 (((
1138 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1139 )))
1140
1141 (((
1142
1143 )))
1144
1145 (((
1146 **Example**:
1147 )))
1148
1149 (((
1150 The RS485-LN is set to AT+RXMODE=2,1000
1151 )))
1152
1153 (((
1154 There is a two Modbus commands in the RS485 network as below:
1155 )))
1156
1157 (((
1158 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1159 )))
1160
1161 (((
1162 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1163 )))
1164
1165 (((
1166 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
1167 )))
1168
1169 (((
1170 (% 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" %)​
1171 )))
1172
1173 (((
1174
1175 )))
1176
1177 (((
1178 (((
1179 (% 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.
1180 )))
1181 )))
1182
1183
1184 == 3.7 Buttons ==
1185
1186
1187 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1188 |=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1189 |(% 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**
1190 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1191 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
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 = 4. Case Study =
1202
1203 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]]
1204
1205
1206 = 5. Use AT Command =
1207
1208 == 5.1 Access AT Command ==
1209
1210 (((
1211 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.
1212 )))
1213
1214 (% 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" %)​
1215
1216
1217 (((
1218 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:
1219 )))
1220
1221 (% 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" %)​
1222
1223
1224 (((
1225 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/]]
1226 )))
1227
1228
1229
1230 == 5.2 Common AT Command Sequence ==
1231
1232
1233 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1234
1235 If device has not joined network yet:
1236
1237 * (% style="color:#037691" %)**AT+FDR**
1238 * (% style="color:#037691" %)**AT+NJM=0**
1239 * (% style="color:#037691" %)**ATZ**
1240
1241 (((
1242
1243
1244 If device already joined network:
1245
1246 * (% style="color:#037691" %)**AT+NJM=0**
1247 * (% style="color:#037691" %)**ATZ**
1248
1249
1250 )))
1251
1252
1253 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1254
1255
1256 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1257
1258 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1259
1260 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1261
1262 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1263
1264 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1265
1266 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1267
1268 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1269
1270 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1271
1272 (% 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.
1273
1274 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1275
1276
1277 (% style="color:red" %)**Note:**
1278
1279 (((
1280 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1281 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1282 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.
1283 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
1284 )))
1285
1286 (% 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" %)​
1287
1288
1289 = 6. FAQ =
1290
1291 == 6.1 How to upgrade the image? ==
1292
1293 (((
1294 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1295 )))
1296
1297 * (((
1298 Support new features
1299 )))
1300 * (((
1301 For bug fix
1302 )))
1303 * (((
1304 Change LoRaWAN bands.
1305 )))
1306
1307 (((
1308 Below shows the hardware connection for how to upload an image to RS485-LN:
1309 )))
1310
1311 (% 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" %)​
1312
1313 (((
1314 (% 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]].
1315 )))
1316
1317 (((
1318 (% 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/]].
1319 )))
1320
1321 (((
1322 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1323 )))
1324
1325 (((
1326 (((
1327 (((
1328 (% 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.
1329 )))
1330 )))
1331 )))
1332
1333
1334 (% 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" %)​
1335
1336
1337 (% 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" %)​
1338
1339
1340 (% 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" %)​
1341
1342
1343 (% 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:
1344
1345 (% 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" %)​
1346
1347
1348 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1349
1350 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1351
1352
1353 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1354
1355 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"]].
1356
1357
1358 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1359
1360 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1361
1362 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1363
1364
1365 = 7. Trouble Shooting =
1366
1367 == 7.1 Downlink doesn’t work, how to solve it? ==
1368
1369 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1370
1371
1372 == 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
1373
1374 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1375
1376
1377 = 8. Order Info =
1378
1379 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1380
1381 (% style="color:blue" %)**XXX:**
1382
1383 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1384 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1385 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1386 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1387 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1388 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1389 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1390 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1391 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1392 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1393
1394 = 9.Packing Info =
1395
1396
1397 **Package Includes**:
1398
1399 * RS485-LN x 1
1400 * Stick Antenna for LoRa RF part x 1
1401 * Program cable x 1
1402
1403 **Dimension and weight**:
1404
1405 * Device Size: 13.5 x 7 x 3 cm
1406 * Device Weight: 105g
1407 * Package Size / pcs : 14.5 x 8 x 5 cm
1408 * Weight / pcs : 170g
1409
1410 = 10. FCC Caution for RS485LN-US915 =
1411
1412 (((
1413 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1414 )))
1415
1416 (((
1417 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.
1418 )))
1419
1420 (((
1421
1422 )))
1423
1424 (((
1425 (% style="color:red" %)**IMPORTANT NOTE:**
1426 )))
1427
1428 (((
1429 **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:
1430 )))
1431
1432 (((
1433 —Reorient or relocate the receiving antenna.
1434 )))
1435
1436 (((
1437 —Increase the separation between the equipment and receiver.
1438 )))
1439
1440 (((
1441 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1442 )))
1443
1444 (((
1445 —Consult the dealer or an experienced radio/TV technician for help.
1446 )))
1447
1448 (((
1449
1450 )))
1451
1452 (((
1453 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1454 )))
1455
1456 (((
1457 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.
1458 )))
1459
1460
1461 = 11. Support =
1462
1463 * (((
1464 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.
1465 )))
1466 * (((
1467 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]].
1468 )))
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