Version 68.7 by Xiaoling on 2022/08/18 14:43
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15 **Table of Contents:**
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17 {{toc/}}
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22 (% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
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31 = 1.Introduction =
32
33 == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
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40 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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46 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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52 (% 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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58 (% 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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62 (% 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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69 (% 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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72
73 == 1.2 Specifications ==
74
75
76 (% style="color:#037691" %)**Hardware System:**
77
78 * STM32L072CZT6 MCU
79 * SX1276/78 Wireless Chip 
80 * Power Consumption (exclude RS485 device):
81 ** Idle: 32mA@12v
82 ** 20dB Transmit: 65mA@12v
83
84
85 (% style="color:#037691" %)**Interface for Model:**
86
87 * RS485
88 * Power Input 7~~ 24V DC. 
89
90
91 (% style="color:#037691" %)**LoRa Spec:**
92
93 * Frequency Range:
94 ** Band 1 (HF): 862 ~~ 1020 Mhz
95 ** Band 2 (LF): 410 ~~ 528 Mhz
96 * 168 dB maximum link budget.
97 * +20 dBm - 100 mW constant RF output vs.
98 * +14 dBm high efficiency PA.
99 * Programmable bit rate up to 300 kbps.
100 * High sensitivity: down to -148 dBm.
101 * Bullet-proof front end: IIP3 = -12.5 dBm.
102 * Excellent blocking immunity.
103 * Low RX current of 10.3 mA, 200 nA register retention.
104 * Fully integrated synthesizer with a resolution of 61 Hz.
105 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
106 * Built-in bit synchronizer for clock recovery.
107 * Preamble detection.
108 * 127 dB Dynamic Range RSSI.
109 * Automatic RF Sense and CAD with ultra-fast AFC.
110 * Packet engine up to 256 bytes with CRC
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113
114 == 1.3 Features ==
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116
117 * LoRaWAN Class A & Class C protocol (default Class C)
118 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
119 * AT Commands to change parameters
120 * Remote configure parameters via LoRa Downlink
121 * Firmware upgradable via program port
122 * Support multiply RS485 devices by flexible rules
123 * Support Modbus protocol
124 * Support Interrupt uplink (Since hardware version v1.2)
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126
127
128 == 1.4 Applications ==
129
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 ==
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143 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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146
147 == 1.6 Hardware Change log ==
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153 v1.2: Add External Interrupt Pin.
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157 v1.0: Release
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164
165 = 2. Power ON Device =
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169 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
170
171 * Power Source VIN to RS485-LN VIN+
172 * Power Source GND to RS485-LN VIN-
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175 Once there is power, the RS485-LN will be on.
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178 (% 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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183
184 = 3. Operation Mode =
185
186 == 3.1 How it works? ==
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191 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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197
198 == 3.2 Example to join LoRaWAN network ==
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201 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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203 (% 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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208 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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212 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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215 (% 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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219 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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225 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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229 Each RS485-LN is shipped with a sticker with unique device EUI:
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233 (% 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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238 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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242 **Add APP EUI in the application.**
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248 (% 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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250 (% 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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252 (% 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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254 You can also choose to create the device manually.
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256 (% 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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260 **Add APP KEY and DEV EUI**
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262 (% aria-label="1652953553383-907.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953553383-907.png||data-widget="image" height="514" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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266 (% style="color:blue" %)**Step 2**(%%): Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
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269 (% 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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272
273 == 3.3 Configure Commands to read data ==
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276 (((
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279 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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285 (% 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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292
293 === 3.3.1 Configure UART settings for RS485 or TTL communication ===
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295
296 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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298 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
299 |=(% style="width: 110px;" %)(((
300 **AT Commands**
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302 **Description**
303 )))|=(% style="width: 190px;" %)(((
304 **Example**
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307 AT+BAUDR
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309 Set the baud rate (for RS485 connection). Default Value is: 9600.
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312 AT+BAUDR=9600
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315 (((
316 Options: (1200,2400,4800,14400,19200,115200)
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319 |(% style="width:110px" %)(((
320 AT+PARITY
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322 Set UART parity (for RS485 connection)
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325 AT+PARITY=0
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329 Option: 0: no parity, 1: odd parity, 2: even parity
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332 |(% style="width:110px" %)(((
333 AT+STOPBIT
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336 Set serial stopbit (for RS485 connection)
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344 AT+STOPBIT=0 for 1bit
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348 AT+STOPBIT=1 for 1.5 bit
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352 AT+STOPBIT=2 for 2 bits
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356
357
358 === 3.3.2 Configure sensors ===
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363 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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369 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
370 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
371 |AT+CFGDEV|(% style="width:110px" %)(((
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373 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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376 (((
377 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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380 (((
381 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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383 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
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385
386
387 === 3.3.3 Configure read commands for each sampling ===
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390 (((
391 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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393 To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
394
395 This section describes how to achieve above goals.
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397 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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399
400 (% style="color:#037691" %)**Each RS485 commands include two parts:**
401
402 ~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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404 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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406 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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409 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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411 Below are examples for the how above AT Commands works.
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413
414 (% 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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416 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
417 |(% style="width:496px" %)(((
418 (% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
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420 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
421
422 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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424
425 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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427 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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429
430 (% 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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432 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
433 |(% style="width:510px" %)(((
434 **AT+DATACUTx=a,b,c**
435
436 * **a: length for the return of AT+COMMAND**
437 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
438 * **c: define the position for valid value.  **
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440
441 **Examples:**
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443 * (% style="color:#037691" %)**Grab bytes**
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445 (% 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**
450
451 (% 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" %)​
452
453
454
455 * (% style="color:#037691" %)**Grab different sections**
456
457 (% 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" %)​
458
459
460
461 )))
462
463 === 3.3.4 Compose the uplink payload ===
464
465
466 (((
467 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.**
468
469
470 )))
471
472 (((
473 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
474
475
476 )))
477
478 (((
479 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
480 )))
481
482 (((
483 Final Payload is
484 )))
485
486 (((
487 (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
488 )))
489
490 (((
491 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
492 )))
493
494 (% 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" %)​
495
496
497 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
498
499
500 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
501
502 Final Payload is
503
504 (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
505
506
507 1. PAYVER: Defined by AT+PAYVER
508 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
509 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
510 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
511
512 (% 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" %)​
513
514
515 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
516
517 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
518
519 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
520
521 DATA3=the rest of Valid value of RETURN10= **30**
522
523
524 (% 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:**
525
526 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
527
528 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
529
530 * For US915 band, max 11 bytes for each uplink.
531
532 ~* For all other bands: max 51 bytes for each uplink.
533
534
535 Below are the uplink payloads:
536
537 (% 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" %)​
538
539
540
541 === 3.3.5 Uplink on demand ===
542
543
544 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.
545
546 Downlink control command:
547
548 **0x08 command**: Poll an uplink with current command set in RS485-LN.
549
550 **0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
551
552
553
554 === 3.3.6 Uplink on Interrupt ===
555
556
557 RS485-LN support external Interrupt uplink since hardware v1.2 release.
558
559 (% 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" %)​
560
561 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.
562
563
564
565 == 3.4 Uplink Payload ==
566
567
568 (% 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" %)​
569
570 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
571
572
573
574 == 3.5 Configure RS485-LN via AT or Downlink ==
575
576
577 (((
578 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
579 )))
580
581 (((
582 There are two kinds of Commands:
583 )))
584
585 * (((
586 (% 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]]
587 )))
588
589 * (((
590 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
591 )))
592
593 (((
594
595 )))
596
597
598
599 === 3.5.1 Common Commands ===
600
601
602 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]]
603
604
605
606 === 3.5.2 Downlink Response(Since firmware v1.4) ===
607
608
609 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.
610
611 (% 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" %)​
612
613 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)
614
615
616
617 === 3.5.3 Sensor related commands ===
618
619
620
621
622 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
623
624
625 (((
626 This command is used to configure the RS485 devices; they won't be used during sampling.
627 )))
628
629 * (((
630 (% style="color:#037691" %)**AT Command**
631
632 (((
633 **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
634 )))
635 )))
636
637 (((
638
639 )))
640
641 * (((
642 (% style="color:#037691" %)**Downlink Payload**
643 )))
644
645 (((
646 Format: A8 MM NN XX XX XX XX YY
647 )))
648
649 (((
650 Where:
651 )))
652
653 * (((
654 MM: 1: add CRC-16/MODBUS ; 0: no CRC
655 )))
656 * (((
657 NN: The length of RS485 command
658 )))
659 * (((
660 XX XX XX XX: RS485 command total NN bytes
661 )))
662 * (((
663 (((
664 YY: How many bytes will be uplink from the return of this RS485 command,
665 )))
666
667 * (((
668 if YY=0, RS485-LN will execute the downlink command without uplink;
669 )))
670 * (((
671 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
672 )))
673 * (((
674 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
675 )))
676 )))
677
678 (((
679
680
681 (% style="color:blue" %)**Example 1:**  (%%) ~-~-> Configure without ask for uplink (YY=0)
682 )))
683
684 (((
685 To connect a Modbus Alarm with below commands.
686 )))
687
688 * (((
689 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.
690 )))
691
692 * (((
693 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.
694 )))
695
696 (((
697
698
699 So if user want to use downlink command to control to RS485 Alarm, he can use:
700 )))
701
702 (((
703 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
704 )))
705
706 (((
707 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
708 )))
709
710 (((
711 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.
712 )))
713
714 (((
715
716 )))
717
718 (((
719 (% style="color:blue" %)**Example 2:**  (%%) ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
720 )))
721
722 (((
723 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
724 )))
725
726 (((
727
728 )))
729
730 (((
731 (((
732 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**
733 )))
734
735
736 )))
737
738 (((
739 (% 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" %)​
740 )))
741
742
743
744
745 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
746
747
748 (((
749 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.
750 )))
751
752 * (((
753 (% style="color:#037691" %)**AT Command:**
754
755 **AT+PAYVER:    **Set PAYVER field = 1
756
757
758 )))
759 * (((
760 (% style="color:#037691" %)**Downlink Payload:**
761 )))
762
763 (((
764 **0xAE 01**  ~-~->  Set PAYVER field =  0x01
765 )))
766
767 (((
768 **0xAE 0F**   ~-~->  Set PAYVER field =  0x0F
769 )))
770
771
772
773
774 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
775
776
777 (((
778 AT+COMMANDx or AT+DATACUTx
779 )))
780
781 (((
782 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"]].
783 )))
784
785 (((
786
787 )))
788
789 * (((
790 (% style="color:#037691" %)**AT Command:**
791 )))
792
793 **AT+COMMANDx:    **Configure RS485 read command to sensor.
794
795 **AT+DATACUTx:        **Configure how to handle return from RS485 devices.
796
797
798 * (((
799 (% style="color:#037691" %)**Downlink Payload:**
800 )))
801
802 (((
803 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
804
805
806 )))
807
808 (((
809 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
810
811
812 )))
813
814 (((
815 Format: AF MM NN LL XX XX XX XX YY
816 )))
817
818 (((
819 Where:
820 )))
821
822 * (((
823 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
824 )))
825 * (((
826 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
827 )))
828 * (((
829 LL:  The length of AT+COMMAND or AT+DATACUT command
830 )))
831 * (((
832 XX XX XX XX: AT+COMMAND or AT+DATACUT command
833 )))
834 * (((
835 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.
836 )))
837
838 (((
839
840
841 **Example:**
842 )))
843
844 (((
845 (% 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
846 )))
847
848 (((
849 (% 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**
850 )))
851
852 (((
853 (% 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**
854 )))
855
856
857
858
859 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
860
861
862 (((
863 **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]].
864 )))
865
866 (((
867 This command is valid since v1.3 firmware version
868 )))
869
870 (((
871 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.
872 )))
873
874 (((
875
876 )))
877
878 (((
879 **Example:**
880 )))
881
882 * (((
883 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
884 )))
885 * (((
886 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.
887 )))
888 * (((
889 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.
890
891
892 )))
893
894 (% 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" %)​
895
896 (% 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" %)​
897
898
899
900
901 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
902
903
904 (((
905 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.
906 )))
907
908 (((
909 Default value: 0, range:  0 ~~ 65 seconds
910 )))
911
912 * (((
913 (% style="color:#037691" %)** AT Command:**
914
915 **AT+CMDDLaa=hex(bb cc)*1000**
916 )))
917
918 (((
919
920
921 **Example:**
922 )))
923
924 (((
925 **AT+CMDDL1=1000** to send the open time to 1000ms
926 )))
927
928 (((
929
930 )))
931
932 * (((
933 (% style="color:#037691" %)** Downlink Payload:**
934 )))
935
936 (((
937 **0x AA aa bb cc**
938 )))
939
940 (((
941 Same as: AT+CMDDLaa=hex(bb cc)*1000
942 )))
943
944 (((
945 **Example:**
946 )))
947
948 (((
949 **0xAA 01 00 01**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
950 )))
951
952
953
954
955 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
956
957
958 (((
959 Define to use one uplink or multiple uplinks for the sampling.
960 )))
961
962 (((
963 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
964
965
966 )))
967
968 * (((
969 (% style="color:#037691" %)** AT Command:**
970 )))
971
972 **AT+DATAUP=0**
973
974 **AT+DATAUP=1**
975
976
977 * (((
978 (% style="color:#037691" %)** Downlink Payload:**
979 )))
980
981 (((
982 **0xAD 00**  **~-~->** Same as AT+DATAUP=0
983 )))
984
985 (((
986 **0xAD 01**  **~-~->** Same as AT+DATAUP=1
987 )))
988
989
990
991
992 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
993
994
995 (((
996 Ask device to send an uplink immediately.
997 )))
998
999 * (((
1000 (% style="color:#037691" %)** AT Command:**
1001 )))
1002
1003 (((
1004 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
1005 )))
1006
1007 (((
1008
1009 )))
1010
1011 * (((
1012 (% style="color:#037691" %)** Downlink Payload:**
1013 )))
1014
1015 (((
1016 **0x08 FF**, RS485-LN will immediately send an uplink.
1017 )))
1018
1019
1020
1021
1022 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
1023
1024
1025 (((
1026 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1027
1028
1029 )))
1030
1031 * (((
1032 (% style="color:#037691" %)** AT Command:**
1033 )))
1034
1035 (((
1036 **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
1037 )))
1038
1039 (((
1040 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1041 )))
1042
1043 (((
1044 Example screen shot after clear all RS485 commands. 
1045 )))
1046
1047 (((
1048
1049 )))
1050
1051 (((
1052 The uplink screen shot is:
1053 )))
1054
1055 (% 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" %)​
1056
1057
1058 * (((
1059 (% style="color:#037691" %)** Downlink Payload:**
1060 )))
1061
1062 (((
1063 **0x09 aa bb** same as AT+CMDEAR=aa,bb
1064 )))
1065
1066
1067
1068
1069 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1070
1071
1072 (((
1073 Set the Rs485 serial communication parameters:
1074 )))
1075
1076 * (((
1077 (% style="color:#037691" %)** AT Command:**
1078 )))
1079
1080 (((
1081
1082
1083 * Set Baud Rate
1084 )))
1085
1086 **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
1087
1088
1089 (((
1090 * Set UART Parity
1091 )))
1092
1093 **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
1094
1095
1096 (((
1097 * Set STOPBIT
1098 )))
1099
1100 **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1101
1102
1103
1104 * (((
1105 (% style="color:#037691" %)** Downlink Payload:**
1106 )))
1107
1108 (((
1109 **A7 01 aa bb**:  Same  AT+BAUDR=hex(aa bb)*100
1110 )))
1111
1112 (((
1113 **Example:**
1114 )))
1115
1116 * (((
1117 A7 01 00 60   same as AT+BAUDR=9600
1118 )))
1119 * (((
1120 A7 01 04 80  same as AT+BAUDR=115200
1121 )))
1122
1123 (((
1124 A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1125 )))
1126
1127 (((
1128 A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1129 )))
1130
1131
1132
1133
1134 == 3.6 Listening mode for RS485 network ==
1135
1136
1137 (((
1138 This feature support since firmware v1.4
1139 )))
1140
1141 (((
1142 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.
1143
1144
1145 )))
1146
1147 (% 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" %)​
1148
1149 (((
1150 To enable the listening mode, use can run the command AT+RXMODE.
1151 )))
1152
1153 (((
1154
1155 )))
1156
1157 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1158 |=(% style="width: 100px;" %)(((
1159 **Command example**
1160 )))|=(% style="width: 400px;" %)(((
1161 **Function**
1162 )))
1163 |(% style="width:100px" %)(((
1164 AT+RXMODE=1,10
1165 )))|(% style="width:400px" %)(((
1166 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.
1167 )))
1168 |(% style="width:100px" %)(((
1169 AT+RXMODE=2,500
1170 )))|(% style="width:400px" %)(((
1171 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
1172 )))
1173 |(% style="width:100px" %)(((
1174 AT+RXMODE=0,0
1175 )))|(% style="width:400px" %)(((
1176 Disable listening mode. This is the default settings.
1177 )))
1178 |(% style="width:100px" %)(((
1179
1180 )))|(% style="width:400px" %)(((
1181 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1182 )))
1183
1184 (((
1185 (% style="color:#037691" %)** Downlink Command:**
1186 )))
1187
1188 (((
1189 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1190 )))
1191
1192 (((
1193
1194 )))
1195
1196 (((
1197 **Example**:
1198 )))
1199
1200 (((
1201 The RS485-LN is set to AT+RXMODE=2,1000
1202 )))
1203
1204 (((
1205 There is a two Modbus commands in the RS485 network as below:
1206 )))
1207
1208 (((
1209 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1210 )))
1211
1212 (((
1213 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1214 )))
1215
1216 (((
1217 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
1218 )))
1219
1220 (((
1221 (% 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" %)​
1222 )))
1223
1224 (((
1225
1226 )))
1227
1228 (((
1229 (((
1230 (% 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.**
1231 )))
1232 )))
1233
1234
1235
1236 == 3.7 Buttons ==
1237
1238
1239 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1240 |=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1241 |(% 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**
1242 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1243 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1244
1245
1246
1247
1248 == 3.8 LEDs ==
1249
1250
1251 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1252 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1253 |**PWR**|Always on if there is power
1254 |**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.
1255
1256
1257
1258
1259 = 4. Case Study =
1260
1261
1262 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]]
1263
1264
1265
1266 = 5. Use AT Command =
1267
1268
1269 == 5.1 Access AT Command ==
1270
1271
1272 (((
1273 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.
1274 )))
1275
1276 (% 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" %)​
1277
1278
1279 (((
1280 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:
1281 )))
1282
1283 (% 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" %)​
1284
1285
1286 (((
1287 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/]]
1288 )))
1289
1290
1291
1292 == 5.2 Common AT Command Sequence ==
1293
1294
1295 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1296
1297
1298 If device has not joined network yet:
1299
1300 * (% style="color:#037691" %)**AT+FDR**
1301 * (% style="color:#037691" %)**AT+NJM=0**
1302 * (% style="color:#037691" %)**ATZ**
1303
1304 (((
1305
1306
1307 If device already joined network:
1308
1309 * (% style="color:#037691" %)**AT+NJM=0**
1310 * (% style="color:#037691" %)**ATZ**
1311
1312
1313 )))
1314
1315
1316
1317 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1318
1319
1320 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1321
1322 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1323
1324 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1325
1326 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1327
1328 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1329
1330 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1331
1332 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1333
1334 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1335
1336 (% 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.
1337
1338 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1339
1340
1341 (% style="color:red" %)**Note:**
1342
1343 (((
1344 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1345 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1346 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.
1347 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
1348
1349
1350 )))
1351
1352 (% 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" %)​
1353
1354
1355
1356 = 6. FAQ =
1357
1358
1359 == 6.1 How to upgrade the image? ==
1360
1361
1362 (((
1363 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1364 )))
1365
1366 * (((
1367 Support new features
1368 )))
1369 * (((
1370 For bug fix
1371 )))
1372 * (((
1373 Change LoRaWAN bands.
1374 )))
1375
1376 (((
1377 Below shows the hardware connection for how to upload an image to RS485-LN:
1378 )))
1379
1380 (% 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"]]
1381
1382 (% title="Click and drag to resize" %)​
1383
1384 (((
1385 (% 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]].
1386 )))
1387
1388 (((
1389 (% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Firmware/]].
1390 )))
1391
1392 (((
1393 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1394 )))
1395
1396 (((
1397 (((
1398 (((
1399 (% 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.
1400 )))
1401 )))
1402 )))
1403
1404
1405 (% 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" %)​
1406
1407
1408 (% 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" %)​
1409
1410
1411 (% 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" %)​
1412
1413
1414 (% 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:**
1415
1416 (% 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" %)​
1417
1418
1419
1420 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1421
1422
1423 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1424
1425
1426
1427 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1428
1429
1430 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"]].
1431
1432
1433
1434 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1435
1436
1437 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1438
1439 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1440
1441
1442
1443 == 6.5 Can i use point to point communication for RS485-LN? ==
1444
1445
1446 Yes, please refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1447
1448
1449
1450 == 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1451
1452
1453 [[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/]]
1454
1455
1456
1457 = 7. Trouble Shooting =
1458
1459
1460 == 7.1 Downlink doesn't work, how to solve it? ==
1461
1462
1463 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1464
1465
1466
1467 == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1468
1469
1470 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1471
1472
1473
1474 = 8. Order Info =
1475
1476
1477 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1478
1479 (% style="color:blue" %)**XXX:**
1480
1481 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1482 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1483 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1484 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1485 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1486 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1487 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1488 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1489 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1490 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1491
1492
1493
1494
1495 = 9.Packing Info =
1496
1497
1498 **Package Includes**:
1499
1500 * RS485-LN x 1
1501 * Stick Antenna for LoRa RF part x 1
1502 * Program cable x 1
1503
1504 **Dimension and weight**:
1505
1506 * Device Size: 13.5 x 7 x 3 cm
1507 * Device Weight: 105g
1508 * Package Size / pcs : 14.5 x 8 x 5 cm
1509 * Weight / pcs : 170g
1510
1511
1512
1513
1514 = 10. FCC Caution for RS485LN-US915 =
1515
1516
1517 (((
1518 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1519 )))
1520
1521 (((
1522 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.
1523 )))
1524
1525 (((
1526
1527 )))
1528
1529 (((
1530 (% style="color:red" %)**IMPORTANT NOTE:**
1531 )))
1532
1533 (((
1534 (% style="color:red" %)**Note: **(%%)This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
1535 )))
1536
1537 (((
1538 —Reorient or relocate the receiving antenna.
1539 )))
1540
1541 (((
1542 —Increase the separation between the equipment and receiver.
1543 )))
1544
1545 (((
1546 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1547 )))
1548
1549 (((
1550 —Consult the dealer or an experienced radio/TV technician for help.
1551 )))
1552
1553 (((
1554
1555 )))
1556
1557 (((
1558 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1559 )))
1560
1561 (((
1562 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.
1563 )))
1564
1565
1566
1567 = 11. Support =
1568
1569
1570 * (((
1571 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.
1572 )))
1573 * (((
1574 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]].
1575
1576
1577
1578 )))

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