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Version 72.1 by Bei Jinggeng on 2022/08/24 14:56
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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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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 (% style="color:#037691" %)**Interface for Model:**
85
86 * RS485
87 * Power Input 7~~ 24V DC. 
88
89 (% style="color:#037691" %)**LoRa Spec:**
90
91 * Frequency Range:
92 ** Band 1 (HF): 862 ~~ 1020 Mhz
93 ** Band 2 (LF): 410 ~~ 528 Mhz
94 * 168 dB maximum link budget.
95 * +20 dBm - 100 mW constant RF output vs.
96 * +14 dBm high efficiency PA.
97 * Programmable bit rate up to 300 kbps.
98 * High sensitivity: down to -148 dBm.
99 * Bullet-proof front end: IIP3 = -12.5 dBm.
100 * Excellent blocking immunity.
101 * Low RX current of 10.3 mA, 200 nA register retention.
102 * Fully integrated synthesizer with a resolution of 61 Hz.
103 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
104 * Built-in bit synchronizer for clock recovery.
105 * Preamble detection.
106 * 127 dB Dynamic Range RSSI.
107 * Automatic RF Sense and CAD with ultra-fast AFC.
108 * Packet engine up to 256 bytes with CRC
109
110 == 1.3 Features ==
111
112
113 * LoRaWAN Class A & Class C protocol (default Class C)
114 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864/MA869
115 * AT Commands to change parameters
116 * Remote configure parameters via LoRa Downlink
117 * Firmware upgradable via program port
118 * Support multiply RS485 devices by flexible rules
119 * Support Modbus protocol
120 * Support Interrupt uplink (Since hardware version v1.2)
121
122 == 1.4 Applications ==
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124
125 * Smart Buildings & Home Automation
126 * Logistics and Supply Chain Management
127 * Smart Metering
128 * Smart Agriculture
129 * Smart Cities
130 * Smart Factory
131
132 == 1.5 Firmware Change log ==
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134
135 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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138
139 == 1.6 Hardware Change log ==
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145 v1.2: Add External Interrupt Pin.
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149 v1.0: Release
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156
157 = 2. Power ON Device =
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161 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
162
163 * Power Source VIN to RS485-LN VIN+
164 * Power Source GND to RS485-LN VIN-
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167 Once there is power, the RS485-LN will be on.
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170 (% aria-label="1653268091319-405.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268091319-405.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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175
176 = 3. Operation Mode =
177
178 == 3.1 How it works? ==
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183 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
193 Here shows an example for how to join the TTN V3 Network. Below is the network structure, we use [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]] as LoRaWAN gateway here. 
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195 (% aria-label="1653268155545-638.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268155545-638.png||data-widget="image" height="334" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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200 The RS485-LN in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method. The connection is as below:
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203 (((
204 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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207 (% 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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211 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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217 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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221 Each RS485-LN is shipped with a sticker with unique device EUI:
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225 (% 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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230 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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234 **Add APP EUI in the application.**
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238 (% 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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240 (% 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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242 (% 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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244 (% 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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246 You can also choose to create the device manually.
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248 (% 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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252 **Add APP KEY and DEV EUI**
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254 (% 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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257 (((
258 (% 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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261 (% 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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263
264
265 == 3.3 Configure Commands to read data ==
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267
268 (((
269 (((
270 (((
271 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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277 (% 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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284
285 === 3.3.1 Configure UART settings for RS485 or TTL communication ===
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288 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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290 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
291 |=(% style="width: 110px;" %)(((
292 **AT Commands**
293 )))|=(% style="width: 190px;" %)(((
294 **Description**
295 )))|=(% style="width: 190px;" %)(((
296 **Example**
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298 |(% style="width:110px" %)(((
299 AT+BAUDR
300 )))|(% style="width:190px" %)(((
301 Set the baud rate (for RS485 connection). Default Value is: 9600.
302 )))|(% style="width:190px" %)(((
303 (((
304 AT+BAUDR=9600
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307 (((
308 Options: (1200,2400,4800,14400,19200,115200)
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311 |(% style="width:110px" %)(((
312 AT+PARITY
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314 Set UART parity (for RS485 connection)
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317 AT+PARITY=0
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321 Option: 0: no parity, 1: odd parity, 2: even parity
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324 |(% style="width:110px" %)(((
325 AT+STOPBIT
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328 Set serial stopbit (for RS485 connection)
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334 )))|(% style="width:190px" %)(((
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336 AT+STOPBIT=0 for 1bit
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339 (((
340 AT+STOPBIT=1 for 1.5 bit
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344 AT+STOPBIT=2 for 2 bits
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347
348 === 3.3.2 Configure sensors ===
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351 (((
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353 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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359 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
360 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
361 |AT+CFGDEV|(% style="width:110px" %)(((
362 (((
363 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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365
366 (((
367 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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370 (((
371 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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373 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
374
375 === 3.3.3 Configure read commands for each sampling ===
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379 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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381 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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383 This section describes how to achieve above goals.
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385 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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387
388 (% style="color:#037691" %)**Each RS485 commands include two parts:**
389
390 ~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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392 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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394 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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397 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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399 Below are examples for the how above AT Commands works.
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401
402 (% 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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404 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
405 |(% style="width:496px" %)(((
406 (% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
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408 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
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410 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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412
413 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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415 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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417
418 (% style="color:#037691" %)**AT+DATACUTx **(%%)**: **This command defines how to handle the return from AT+COMMANDx, max return length is 100 bytes.
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420 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
421 |(% style="width:510px" %)(((
422 **AT+DATACUTx=a,b,c**
423
424 * **a: length for the return of AT+COMMAND**
425 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
426 * **c: define the position for valid value.  **
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428
429 **Examples:**
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431 * (% style="color:#037691" %)**Grab bytes**
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433 (% 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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437 * (% style="color:#037691" %)**Grab a section**
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439 (% 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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441
442
443 * (% style="color:#037691" %)**Grab different sections**
444
445 (% 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" %)​
446
447
448
449 )))
450
451 === 3.3.4 Compose the uplink payload ===
452
453
454 (((
455 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.**
456
457
458 )))
459
460 (((
461 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
462
463
464 )))
465
466 (((
467 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
468 )))
469
470 (((
471 Final Payload is
472 )))
473
474 (((
475 (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
476 )))
477
478 (((
479 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
480 )))
481
482 (% 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" %)​
483
484
485 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
486
487
488 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
489
490 Final Payload is
491
492 (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
493
494
495 1. PAYVER: Defined by AT+PAYVER
496 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
497 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
498 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
499
500 (% 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" %)​
501
502
503 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
504
505 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
506
507 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
508
509 DATA3=the rest of Valid value of RETURN10= **30**
510
511
512 (% 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:**
513
514 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
515
516 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
517
518 * For US915 band, max 11 bytes for each uplink.
519
520 ~* For all other bands: max 51 bytes for each uplink.
521
522 (% style="color:red" %)*** When AT+DATAUP=1, the maximum number of segments is 15, and the maximum total number of bytes is 1500;**
523
524 (% style="color:red" %)** When AT+DATAUP=1 and AT+ADR=0, the maximum number of bytes of each payload is determined by the DR value. (Since v1.4.0)**
525
526
527 (% style="color:#4f81bd" %)**If the data is empty, return to the display（Since v1.4.0）**
528
529 1)When AT+MOD=1, if the data intercepted by AT+DATACUT or AT+MBFUN is empty, it will display NULL, and the payload will be filled with n FFs.
530
531 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/test/WebHome/image-20220824114359-3.png?width=1106&height=297&rev=1.1||alt="image-20220824114359-3.png" height="297" width="1106"]]
532
533 2)When AT+MOD=2, if the data intercepted by AT+DATACUT or AT+MBFUN is empty, it will display NULL, and the payload will be filled with n 00s.
534
535 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/test/WebHome/image-20220824114330-2.png?rev=1.1||alt="image-20220824114330-2.png"]]
536
537
538 Below are the uplink payloads:
539
540 (% 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" %)​
541
542
543
544 === 3.3.5 Uplink on demand ===
545
546
547 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.
548
549 Downlink control command:
550
551 **0x08 command**: Poll an uplink with current command set in RS485-LN.
552
553 **0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
554
555
556
557 === 3.3.6 Uplink on Interrupt ===
558
559
560 RS485-LN support external Interrupt uplink since hardware v1.2 release.
561
562 (% 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" %)​
563
564 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.
565
566
567
568 == 3.4 Uplink Payload ==
569
570
571 (% 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" %)​
572
573 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
574
575
576
577 == 3.5 Configure RS485-LN via AT or Downlink ==
578
579
580 (((
581 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
582 )))
583
584 (((
585 There are two kinds of Commands:
586 )))
587
588 * (((
589 (% 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]]
590 )))
591
592 * (((
593 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
594 )))
595
596 (((
597
598 )))
599
600
601
602 === 3.5.1 Common Commands ===
603
604
605 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]]
606
607
608
609 === 3.5.2 Downlink Response(Since firmware v1.4) ===
610
611
612 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.
613
614 (% 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" %)​
615
616 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)
617
618
619
620 === 3.5.3 Sensor related commands ===
621
622
623
624
625 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
626
627
628 (((
629 This command is used to configure the RS485 devices; they won't be used during sampling.
630 )))
631
632 * (((
633 (% style="color:#037691" %)**AT Command**
634
635 (((
636 **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
637 )))
638 )))
639
640 (((
641
642 )))
643
644 * (((
645 (% style="color:#037691" %)**Downlink Payload**
646 )))
647
648 (((
649 Format: A8 MM NN XX XX XX XX YY
650 )))
651
652 (((
653 Where:
654 )))
655
656 * (((
657 MM: 1: add CRC-16/MODBUS ; 0: no CRC
658 )))
659 * (((
660 NN: The length of RS485 command
661 )))
662 * (((
663 XX XX XX XX: RS485 command total NN bytes
664 )))
665 * (((
666 (((
667 YY: How many bytes will be uplink from the return of this RS485 command,
668 )))
669
670 * (((
671 if YY=0, RS485-LN will execute the downlink command without uplink;
672 )))
673 * (((
674 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
675 )))
676 * (((
677 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
678 )))
679 )))
680
681 (((
682
683
684 (% style="color:blue" %)**Example 1:**  (%%) ~-~-> Configure without ask for uplink (YY=0)
685 )))
686
687 (((
688 To connect a Modbus Alarm with below commands.
689 )))
690
691 * (((
692 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.
693 )))
694
695 * (((
696 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.
697 )))
698
699 (((
700
701
702 So if user want to use downlink command to control to RS485 Alarm, he can use:
703 )))
704
705 (((
706 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
707 )))
708
709 (((
710 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
711 )))
712
713 (((
714 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.
715 )))
716
717 (((
718
719 )))
720
721 (((
722 (% style="color:blue" %)**Example 2:**  (%%) ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
723 )))
724
725 (((
726 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
727 )))
728
729 (((
730
731 )))
732
733 (((
734 (((
735 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**
736 )))
737
738
739 )))
740
741 (((
742 (% 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" %)​
743 )))
744
745
746
747
748 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
749
750
751 (((
752 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.
753 )))
754
755 * (((
756 (% style="color:#037691" %)**AT Command:**
757
758 **AT+PAYVER:    **Set PAYVER field = 1
759
760
761 )))
762 * (((
763 (% style="color:#037691" %)**Downlink Payload:**
764 )))
765
766 (((
767 **0xAE 01**  ~-~->  Set PAYVER field =  0x01
768 )))
769
770 (((
771 **0xAE 0F**   ~-~->  Set PAYVER field =  0x0F
772 )))
773
774
775 1)Add the interrupt flag at the highest bit of the Payver byte, that is, Byte7 of the first byte. (Since v1.4.0)[[image:image-20220824145428-2.png||height="168" width="1300"]]
776
777
778 2)if the data intercepted by AT+DATACUT or AT+MBFUN is empty, it will display NULL, and the payload will be filled with n FFs.
779
780 [[image:image-20220824145428-3.png||height="308" width="1200"]]
781
782
783 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
784
785
786 (((
787 AT+COMMANDx or AT+DATACUTx
788 )))
789
790 (((
791 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"]].
792 )))
793
794 (((
795
796 )))
797
798 * (((
799 (% style="color:#037691" %)**AT Command:**
800 )))
801
802 **AT+COMMANDx:    **Configure RS485 read command to sensor.
803
804 **AT+DATACUTx:        **Configure how to handle return from RS485 devices.
805
806
807 * (((
808 (% style="color:#037691" %)**Downlink Payload:**
809 )))
810
811 (((
812 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
813
814
815 )))
816
817 (((
818 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
819
820
821 )))
822
823 (((
824 Format: AF MM NN LL XX XX XX XX YY
825 )))
826
827 (((
828 Where:
829 )))
830
831 * (((
832 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
833 )))
834 * (((
835 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
836 )))
837 * (((
838 LL:  The length of AT+COMMAND or AT+DATACUT command
839 )))
840 * (((
841 XX XX XX XX: AT+COMMAND or AT+DATACUT command
842 )))
843 * (((
844 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.
845 )))
846
847 (((
848
849
850 **Example:**
851 )))
852
853 (((
854 (% 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
855 )))
856
857 (((
858 (% 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**
859 )))
860
861 (((
862 (% 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**
863 )))
864
865
866
867
868 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
869
870
871 (((
872 **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]].
873 )))
874
875 (((
876 This command is valid since v1.3 firmware version
877 )))
878
879 (((
880 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.
881 )))
882
883 (((
884
885 )))
886
887 (((
888 **Example:**
889 )))
890
891 * (((
892 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
893 )))
894 * (((
895 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.
896 )))
897 * (((
898 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.
899
900
901 )))
902
903 (% 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" %)​
904
905 (% 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" %)​
906
907
908
909
910 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
911
912
913 (((
914 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.
915 )))
916
917 (((
918 Default value: 0, range:  0 ~~ 65 seconds
919 )))
920
921 * (((
922 (% style="color:#037691" %)** AT Command:**
923
924 **AT+CMDDLaa=hex(bb cc)*1000**
925 )))
926
927 (((
928
929
930 **Example:**
931 )))
932
933 (((
934 **AT+CMDDL1=1000** to send the open time to 1000ms
935 )))
936
937 (((
938
939 )))
940
941 * (((
942 (% style="color:#037691" %)** Downlink Payload:**
943 )))
944
945 (((
946 **0x AA aa bb cc**
947 )))
948
949 (((
950 Same as: AT+CMDDLaa=hex(bb cc)*1000
951 )))
952
953 (((
954 **Example:**
955 )))
956
957 (((
958 **0xAA 01 00 01**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
959 )))
960
961
962 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
963
964
965 (((
966 Define to use one uplink or multiple uplinks for the sampling.
967 )))
968
969 (((
970 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
971
972
973 )))
974
975 * (((
976 (% style="color:#037691" %)** AT Command:**
977
978 **AT+DATAUP=0**
979
980 **AT+DATAUP=1**
981
982
983 )))
984
985 **0xAD 01 00 00 14**  **~-~->** Same as AT+DATAUP=1，20000 ~/~/(00 00 14 is 20 seconds)
986
987 Each uplink is sent to the server at 20-second intervals when segmented.
988
989
990 * (((
991 (% style="color:#037691" %)** Downlink Payload:**
992 )))
993
994 **0xAD 00**  **~-~->** Same as AT+DATAUP=0
995
996 **0xAD 01**  **~-~->** Same as AT+DATAUP=1  ~/~/Each uplink is sent to the server one after the other as it is segmented.
997
998
999 * (((
1000 (% style="color:#037691" %)** AT Command:**
1001 )))
1002
1003 **AT+DATAUP=1,Timeout**
1004
1005
1006 * (((
1007 (% style="color:#037691" %)** Downlink Payload:**
1008 )))
1009
1010 **0xAD 01 00 00 14**  **~-~->** Same as AT+DATAUP=1，20000 ~/~/(00 00 14 is 20 seconds)
1011
1012 Each uplink is sent to the server at 20-second intervals when segmented.
1013
1014 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
1015
1016
1017 (((
1018 Ask device to send an uplink immediately.
1019 )))
1020
1021 * (((
1022 (% style="color:#037691" %)** AT Command:**
1023 )))
1024
1025 (((
1026 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
1027 )))
1028
1029 (((
1030
1031 )))
1032
1033 * (((
1034 (% style="color:#037691" %)** Downlink Payload:**
1035 )))
1036
1037 (((
1038 **0x08 FF**, RS485-LN will immediately send an uplink.
1039 )))
1040
1041
1042
1043
1044 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
1045
1046
1047 (((
1048 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1049
1050
1051 )))
1052
1053 * (((
1054 (% style="color:#037691" %)** AT Command:**
1055 )))
1056
1057 (((
1058 **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
1059 )))
1060
1061 (((
1062 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1063 )))
1064
1065 (((
1066 Example screen shot after clear all RS485 commands. 
1067 )))
1068
1069 (((
1070
1071 )))
1072
1073 (((
1074 The uplink screen shot is:
1075 )))
1076
1077 (% 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" %)​
1078
1079
1080 * (((
1081 (% style="color:#037691" %)** Downlink Payload:**
1082 )))
1083
1084 (((
1085 **0x09 aa bb** same as AT+CMDEAR=aa,bb
1086 )))
1087
1088
1089
1090
1091 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1092
1093
1094 (((
1095 Set the Rs485 serial communication parameters:
1096
1097
1098 )))
1099
1100 * (((
1101 (% style="color:#037691" %)** AT Command:**
1102 )))
1103
1104 (((
1105 * Set Baud Rate
1106 )))
1107
1108 **AT+BAUDR=9600**    ~/~/ Options: (200~~115200)  When using low baud rate or receiving multiple bytes, you need to use AT+CMDDL to increase the receive timeout (the default receive timeout is 400ms), otherwise data will be lost
1109
1110
1111 (((
1112 * Set UART Parity
1113 )))
1114
1115 **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
1116
1117
1118 (((
1119 * Set STOPBIT
1120 )))
1121
1122 **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1123
1124
1125
1126 * (((
1127 (% style="color:#037691" %)** Downlink Payload:**
1128 )))
1129
1130 (((
1131 **A7 01 aa bb**:  Same  AT+BAUDR=hex(aa bb)*100
1132 )))
1133
1134 (((
1135 **Example:**
1136 )))
1137
1138 * (((
1139 A7 01 00 60   same as AT+BAUDR=9600
1140 )))
1141 * (((
1142 A7 01 04 80  same as AT+BAUDR=115200
1143 )))
1144
1145 (((
1146 A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1147 )))
1148
1149 (((
1150 A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1151 )))
1152
1153
1154 ==== (% style="color:blue" %)**Encrypted payload**(%%) ====
1155
1156 (((
1157
1158 )))
1159
1160 * (((
1161 (% style="color:#037691" %)** AT Command:**
1162 )))
1163
1164 **AT+DECRYPT=1  **~/~/ The payload is uploaded without encryption
1165
1166 **AT+DECRYPT=0  **~/~/Encrypt when uploading payload (default)
1167
1168
1169 ==== (% style="color:blue" %)**Get sensor value**(%%) ====
1170
1171
1172 * (((
1173 (% style="color:#037691" %)** AT Command:**
1174 )))
1175
1176 **AT+GETSENSORVALUE=0  **~/~/ The serial port gets the reading of the current sensor
1177
1178 **AT+GETSENSORVALUE=1  **~/~/The serial port gets the current sensor reading and uploads it.
1179
1180
1181 ==== (% style="color:blue" %)**Resets the downlink packet count**(%%) ====
1182
1183
1184 * (((
1185 (% style="color:#037691" %)** AT Command:**
1186 )))
1187
1188 **AT+DISFCNTCHECK=0  **~/~/ When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node will no longer receive downlink packets (default)
1189
1190 **AT+DISFCNTCHECK=1  **~/~/When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node resets the downlink packet count and keeps it consistent with the server downlink packet count.
1191
1192
1193 ==== (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches**(%%) ====
1194
1195
1196 * (((
1197 (% style="color:#037691" %)** AT Command:**
1198 )))
1199
1200 **AT+DISMACANS=0**  ~/~/ When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of 11 bytes (DR0 of US915, DR2 of AS923, DR2 of AU195), the node will send a packet with a payload of 00 and a port of 4. (default)
1201
1202 **AT+DISMACANS=1**      ~/~/ When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of the DR, the node will ignore the MACANS and not reply, and only upload the payload part.
1203
1204
1205 * (((
1206 (% style="color:#037691" %)** Downlink Payload:**
1207 )))
1208
1209 **0x21 00 01 ** ~/~/ Set  the DISMACANS=1
1210
1211
1212 ==== (% style="color:blue" %)** Copy downlink to uplink **(%%) ====
1213
1214
1215 * (((
1216 (% style="color:#037691" %)** AT Command:**
1217 )))
1218
1219 **AT+RPL=5**  ~/~/ After receiving the package from the server, it will immediately upload the content of the package to the server, the port number is 100.
1220
1221 Example：**aa xx xx xx xx**         ~/~/ aa indicates whether the configuration has changed, 00 is yes, 01 is no; xx xx xx xx are the bytes sent.
1222
1223 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173747-6.png?width=1124&height=165&rev=1.1||alt="image-20220823173747-6.png"]]
1224
1225 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1226
1227 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]
1228
1229 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1230
1231
1232 ==== (% style="color:blue" %)**Query version number and frequency band 、TDC**(%%) ====
1233
1234
1235 * (((
1236 (% style="color:#037691" %)**Downlink Payload:**
1237
1238 **26 01  ** ~/~/ Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1239 )))
1240
1241 Example：
1242
1243 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173929-8.png?width=1205&height=76&rev=1.1||alt="image-20220823173929-8.png"]]
1244
1245 (% class="wikigeneratedid" %)
1246 ==== ====
1247
1248 ==== (% style="color:blue" %)** Monitor RS485 communication of other devices**(%%) ====
1249
1250
1251 * (((
1252 (% style="color:#037691" %)** AT Command:**
1253 )))
1254
1255 **~ ​AT+RXMODE=1,10**  ~/~/ When the RS485-LN receives more than 10 bytes from the RS485, it immediately sends the uplink of the received data.
1256
1257 **~ ​AT+RXMODE=2,500 ** ~/~/RS485-LN uploads data as uplink from the first byte received by RS485 to the data received within 500ms after that.
1258
1259 **AT+RXMODE=0,0  ** ~/~/Disable this mode (default)
1260
1261
1262 * (((
1263 (% style="color:#037691" %)**Downlink Payload:**
1264 )))
1265
1266 **A6 aa bb bb  ** ~/~/same as AT+RXMODE=aa,bb
1267
1268 [[image:image-20220824144240-1.png]]
1269
1270
1271
1272 == 3.6 Listening mode for RS485 network ==
1273
1274
1275 (((
1276 This feature support since firmware v1.4
1277 )))
1278
1279 (((
1280 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.
1281
1282
1283 )))
1284
1285 (% 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" %)​
1286
1287 (((
1288 To enable the listening mode, use can run the command AT+RXMODE.
1289 )))
1290
1291 (((
1292
1293 )))
1294
1295 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1296 |=(% style="width: 100px;" %)(((
1297 **Command example**
1298 )))|=(% style="width: 400px;" %)(((
1299 **Function**
1300 )))
1301 |(% style="width:100px" %)(((
1302 AT+RXMODE=1,10
1303 )))|(% style="width:400px" %)(((
1304 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.
1305 )))
1306 |(% style="width:100px" %)(((
1307 AT+RXMODE=2,500
1308 )))|(% style="width:400px" %)(((
1309 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
1310 )))
1311 |(% style="width:100px" %)(((
1312 AT+RXMODE=0,0
1313 )))|(% style="width:400px" %)(((
1314 Disable listening mode. This is the default settings.
1315 )))
1316 |(% style="width:100px" %)(((
1317
1318 )))|(% style="width:400px" %)(((
1319 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1320 )))
1321
1322 (((
1323 (% style="color:#037691" %)** Downlink Command:**
1324 )))
1325
1326 (((
1327 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1328 )))
1329
1330 (((
1331
1332 )))
1333
1334 (((
1335 **Example**:
1336 )))
1337
1338 (((
1339 The RS485-LN is set to AT+RXMODE=2,1000
1340 )))
1341
1342 (((
1343 There is a two Modbus commands in the RS485 network as below:
1344 )))
1345
1346 (((
1347 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1348 )))
1349
1350 (((
1351 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1352 )))
1353
1354 (((
1355 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
1356 )))
1357
1358 (((
1359 (% 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" %)​
1360 )))
1361
1362 (((
1363
1364 )))
1365
1366 (((
1367 (((
1368 (% 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.**
1369 )))
1370 )))
1371
1372
1373
1374 == 3.7 Buttons ==
1375
1376
1377 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1378 |=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1379 |(% 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**
1380 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1381 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1382
1383 == 3.8 LEDs ==
1384
1385
1386 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1387 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1388 |**PWR**|Always on if there is power
1389 |**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.
1390
1391 = 4. Case Study =
1392
1393
1394 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]]
1395
1396
1397
1398 = 5. Use AT Command =
1399
1400
1401 == 5.1 Access AT Command ==
1402
1403
1404 (((
1405 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.
1406 )))
1407
1408 (% 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" %)​
1409
1410
1411 (((
1412 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:
1413 )))
1414
1415 (% 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" %)​
1416
1417
1418 (((
1419 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/]]
1420 )))
1421
1422
1423
1424 == 5.2 Common AT Command Sequence ==
1425
1426
1427 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1428
1429
1430 If device has not joined network yet:
1431
1432 * (% style="color:#037691" %)**AT+FDR**
1433 * (% style="color:#037691" %)**AT+NJM=0**
1434 * (% style="color:#037691" %)**ATZ**
1435
1436 (((
1437
1438
1439 If device already joined network:
1440
1441 * (% style="color:#037691" %)**AT+NJM=0**
1442 * (% style="color:#037691" %)**ATZ**
1443
1444
1445 )))
1446
1447
1448
1449 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1450
1451
1452 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1453
1454 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1455
1456 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1457
1458 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1459
1460 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1461
1462 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1463
1464 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1465
1466 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1467
1468 (% 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.
1469
1470 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1471
1472
1473 (% style="color:red" %)**Note:**
1474
1475 (((
1476 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1477 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1478 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.
1479 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
1480
1481
1482 )))
1483
1484 (% 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" %)​
1485
1486
1487
1488 = 6. FAQ =
1489
1490
1491 == 6.1 How to upgrade the image? ==
1492
1493
1494 (((
1495 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1496 )))
1497
1498 * (((
1499 Support new features
1500 )))
1501 * (((
1502 For bug fix
1503 )))
1504 * (((
1505 Change LoRaWAN bands.
1506 )))
1507
1508 (((
1509 Below shows the hardware connection for how to upload an image to RS485-LN:
1510 )))
1511
1512 (% 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"]]
1513
1514 (% title="Click and drag to resize" %)​
1515
1516 (((
1517 (% 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]].
1518 )))
1519
1520 (((
1521 (% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Firmware/]].
1522 )))
1523
1524 (((
1525 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1526 )))
1527
1528 (((
1529 (((
1530 (((
1531 (% 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.
1532 )))
1533 )))
1534 )))
1535
1536
1537 (% 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" %)​
1538
1539
1540 (% 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" %)​
1541
1542
1543 (% 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" %)​
1544
1545
1546 (% 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:**
1547
1548 (% 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" %)​
1549
1550
1551
1552 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1553
1554
1555 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1556
1557
1558
1559 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1560
1561
1562 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"]].
1563
1564
1565
1566 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1567
1568
1569 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1570
1571 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1572
1573
1574
1575 == 6.5 Can i use point to point communication for RS485-LN? ==
1576
1577
1578 Yes, please refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1579
1580
1581
1582 == 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1583
1584
1585 [[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/]]
1586
1587
1588
1589 = 7. Trouble Shooting =
1590
1591
1592 == 7.1 Downlink doesn't work, how to solve it? ==
1593
1594
1595 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1596
1597
1598
1599 == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1600
1601
1602 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1603
1604
1605
1606 = 8. Order Info =
1607
1608
1609 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1610
1611 (% style="color:blue" %)**XXX:**
1612
1613 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1614 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1615 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1616 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1617 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1618 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1619 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1620 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1621 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1622 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1623
1624 = 9.Packing Info =
1625
1626
1627 **Package Includes**:
1628
1629 * RS485-LN x 1
1630 * Stick Antenna for LoRa RF part x 1
1631 * Program cable x 1
1632
1633 **Dimension and weight**:
1634
1635 * Device Size: 13.5 x 7 x 3 cm
1636 * Device Weight: 105g
1637 * Package Size / pcs : 14.5 x 8 x 5 cm
1638 * Weight / pcs : 170g
1639
1640 = 10. FCC Caution for RS485LN-US915 =
1641
1642
1643 (((
1644 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1645 )))
1646
1647 (((
1648 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.
1649 )))
1650
1651 (((
1652
1653 )))
1654
1655 (((
1656 (% style="color:red" %)**IMPORTANT NOTE:**
1657 )))
1658
1659 (((
1660 (% 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:
1661 )))
1662
1663 (((
1664 —Reorient or relocate the receiving antenna.
1665 )))
1666
1667 (((
1668 —Increase the separation between the equipment and receiver.
1669 )))
1670
1671 (((
1672 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1673 )))
1674
1675 (((
1676 —Consult the dealer or an experienced radio/TV technician for help.
1677 )))
1678
1679 (((
1680
1681 )))
1682
1683 (((
1684 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1685 )))
1686
1687 (((
1688 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.
1689 )))
1690
1691
1692
1693 = 11. Support =
1694
1695
1696 * (((
1697 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.
1698 )))
1699 * (((
1700 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]].
1701
1702
1703
1704 )))