Version 120.1 by Mengting Qiu on 2024/09/25 16:11
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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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30
31 = 1. Introduction =
32
33 == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
34
35
36 (((
37 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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40 (((
41 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, building automation, and so on.
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45 (% 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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48 (((
49 (% 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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53 (% 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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57 (% 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" %)​
58
59
60 == 1.2 Specifications ==
61
62
63 (% style="color:#037691" %)**Hardware System:**
64
65 * STM32L072xxxx MCU
66 * SX1276/78 Wireless Chip 
67 * Power Consumption (exclude RS485 device):
68 ** Idle: 32mA@12v
69 ** 20dB Transmit: 65mA@12v
70
71 (% style="color:#037691" %)**Interface for Model:**
72
73 * RS485
74 * Power Input 7~~ 24V DC. 
75
76 (% style="color:#037691" %)**LoRa Spec:**
77
78 * Frequency Range:
79 ** Band 1 (HF): 862 ~~ 1020 Mhz
80 ** Band 2 (LF): 410 ~~ 528 Mhz
81 * 168 dB maximum link budget.
82 * +20 dBm - 100 mW constant RF output vs.
83 * +14 dBm high efficiency PA.
84 * Programmable bit rate up to 300 kbps.
85 * High sensitivity: down to -148 dBm.
86 * Bullet-proof front end: IIP3 = -12.5 dBm.
87 * Excellent blocking immunity.
88 * Low RX current of 10.3 mA, 200 nA register retention.
89 * Fully integrated synthesizer with a resolution of 61 Hz.
90 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
91 * Built-in bit synchronizer for clock recovery.
92 * Preamble detection.
93 * 127 dB Dynamic Range RSSI.
94 * Automatic RF Sense and CAD with ultra-fast AFC.
95 * Packet engine up to 256 bytes with CRC
96
97 == 1.3 Features ==
98
99
100 * LoRaWAN Class A & Class C protocol (default Class C)
101 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864/MA869
102 * AT Commands to change parameters
103 * Remote configure parameters via LoRa Downlink
104 * Firmware upgradable via program port
105 * Support multiply RS485 devices by flexible rules
106 * Support Modbus protocol
107 * Support Interrupt uplink (Since hardware version v1.2)
108
109 == 1.4 Applications ==
110
111
112 * Smart Buildings & Home Automation
113 * Logistics and Supply Chain Management
114 * Smart Metering
115 * Smart Agriculture
116 * Smart Cities
117 * Smart Factory
118
119 == 1.5 Firmware Change log ==
120
121
122 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
123
124
125 == 1.6 Hardware Change log ==
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128 (((
129 (((
130 (((
131 v1.2: Add External Interrupt Pin.
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134 (((
135 v1.0: Release
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137
138
139 == 1.7 Pin definition ==
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142
143 = 2. Power ON Device =
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147 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
148
149 * Power Source VIN to RS485-LN VIN+
150 * Power Source GND to RS485-LN VIN-
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153 Once there is power, the RS485-LN will be on.
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156 (% 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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160
161 = 3. Operation Mode =
162
163 == 3.1 How it works? ==
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166 (((
167 (((
168 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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173
174 == 3.2 Example to join LoRaWAN network ==
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177 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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183 (((
184 (((
185 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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189 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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198 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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203 (((
204 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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208 Each RS485-LN is shipped with a sticker with unique device EUI:
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212 (% 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"]][[image:image-20230425175410-2.png]](% title="Click and drag to resize" %)​
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215 (((
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217 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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223 **Add APP EUI in the application.**
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233 (% 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"]]
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236 (% title="Click and drag to resize" %)​
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238 You can also choose to create the device manually.
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240 (% 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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243
244 **Add APP KEY and DEV EUI**
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246 (% 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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249 (((
250 (% style="color:blue" %)**Step 2**(%%): Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
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255 (% aria-label="1652953568895-172.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953568895-172.png||data-widget="image" height="232" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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257
258 == 3.3 Configure Device to Read RS485 Sensors ==
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260
261 There are plenty of RS485 and TTL level devices in the market and each device has different commands to read the valid data. To support these devices in most flexible, RS485-LN supports flexible command set. User can use [[Dragino RS485 Tool>>url:https://www.dropbox.com/sh/us9qecn39fwt8n1/AABREdqUCzEmJMRrfuWuXasoa?dl=0]],  [[AT Commands or LoRaWAN Downlink>>url:http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LB_Waterproof_RS485UART_to_LoRaWAN_Converter/#H3.5ConfigureRS485-LBviaATorDownlink]] Command to configure how RS485-LN should read the sensor and how to handle the return from RS485 or TTL sensors.
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264 (((
265 (((
266 (((
267 (% 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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269
270
271 === 3.3.1 Method 1 ~-~- via RS485 Configure Tool ===
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273
274 Use the RS485 Configure tool is the recommand method. Please see the instruction of how to use the tool:
275
276 * **[[RS485 Configure Tool Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/RS485_Configure_Tool/]]**
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278 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LB_Waterproof_RS485UART_to_LoRaWAN_Converter/WebHome/image-20231127144411-1.png?width=494&height=368&rev=1.1||alt="image-20231127144411-1.png" height="368" width="494"]]
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280
281 === 3.3.2  Method 2 ~-~- via AT Commands ===
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283 )))
284
285 ==== 3.3.2.1 Configure UART settings for RS485 communication ====
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287
288 To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. The related commands for UART settings are:
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290 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
291 |=(% style="width: 126px; background-color:#4F81BD;color:white" %)(((
292 **AT Commands**
293 )))|=(% style="width: 187px; background-color:#4F81BD;color:white" %)(((
294 **Description**
295 )))|=(% style="width: 197px;background-color:#4F81BD;color:white" %)(((
296 **Example**
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298 |(% style="width:126px" %)(((
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300
301 (((
302 AT+BAUDR
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304 )))|(% style="width:177px" %)(((
305 Set the baud rate (for RS485 connection). Default Value is: 9600.
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307 (((
308 AT+BAUDR=9600
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311 (((
312 Options: (1200,2400,4800,
313 14400,19200,115200)
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316 |(% style="width:126px" %)(((
317 AT+PARITY
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319 Set UART parity (for RS485 connection)
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321 (((
322 AT+PARITY=0
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325 (((
326 Option: 0: no parity,
327 1: odd parity,
328 2: even parity
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331 |(% style="width:126px" %)(((
332 AT+STOPBIT
333 )))|(% style="width:177px" %)(((
334 (((
335 Set serial stopbit (for RS485 connection)
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337 )))|(% style="width:193px" %)(((
338 (((
339 AT+STOPBIT=0 for 1bit
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342 (((
343 AT+STOPBIT=1 for 1.5 bit
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346 (((
347 AT+STOPBIT=2 for 2 bits
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349 )))
350
351 === 3.3.3 Configure sensors ===
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353
354 (((
355 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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358 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
359 |=(% style="width: 122px; background-color:#4F81BD;color:white" %)**AT Commands**|=(% style="width: 198px; background-color:#4F81BD;color:white" %)**Description**|=(% style="width: 190px;background-color:#4F81BD;color:white" %)**Example**
360 |(% style="width:122px" %)AT+CFGDEV|(% style="width:196px" %)(((
361 (((
362 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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364
365 (((
366 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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368
369 (((
370 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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372 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
373
374 === 3.3.4 Configure read commands for each sampling ===
375
376
377 (((
378 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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380 To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
381
382 This section describes how to achieve above goals.
383
384 During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
385
386
387 (% style="color:#037691" %)**Each RS485 commands include two parts:**
388
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.
391
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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396
397 After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
398
399 Below are examples for the how above AT Commands works.
400
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:#f2f2f2; width:499px" %)
405 |(% style="width:496px" %)(((
406 **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
407
408 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
409
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 If a single command exceeds 14 bytes, you can use the command splicing function.
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420 When AT+CMDDLx=1, the commands of AT+COMMANDx and AT+COMMAND(x+1) will be merged.
421
422
423 **Examples:** To send 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F data it should be configured:
424
425 AT+COMMAND1=00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D,0
426
427 AT+COMMAND1=1
428
429 AT+COMMAND2=0E 0F,0
430
431
432 (% 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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434 (% border="1" style="background-color:#f2f2f2; width:510px" %)
435 |(% style="width:510px" %)(((
436 **AT+DATACUTx=a,b,c**
437
438 * **a: length for the return of AT+COMMAND**
439 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
440 * **c: define the position for valid value.  **
441 )))
442
443 **Examples:**
444
445
446 * (% style="color:#037691" %)**Grab bytes**
447
448 (% 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" %)​
449
450
451
452 * (% style="color:#037691" %)**Grab a section**
453
454 (% 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" %)​
455
456
457
458 * (% style="color:#037691" %)**Grab different sections**
459
460 (% 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" %)​
461
462
463 )))
464
465 === 3.3.5 Compose the uplink payload ===
466
467
468 (((
469 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.**
470
471
472 )))
473
474 (((
475 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
476
477
478 )))
479
480 (((
481 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
482 )))
483
484 (((
485 Final Payload is (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
486 )))
487
488 (((
489 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
490
491
492 )))
493
494 [[image:image-20220929111027-1.png||height="509" width="685"]](% 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 (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
503
504
505 ~1. PAYVER: Defined by AT+PAYVER
506
507 2. PAYLOAD COUNT: Total how many uplinks of this sampling.
508
509 3. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
510
511 4. 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
512
513
514 (% 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" %)​
515
516
517 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
518
519 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
520
521 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
522
523 DATA3=the rest of Valid value of RETURN10= **30**
524
525
526 (% 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:**
527
528
529 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
530
531 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
532
533 * For US915 band, max 11 bytes for each uplink.
534
535 ~* For all other bands: max 51 bytes for each uplink.
536
537
538 (% style="color:red" %)** When AT+DATAUP=1, the maximum number of segments is 15, and the maximum total number of bytes is 1500;**
539
540 (% 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)**
541
542
543
544 Below are the uplink payloads:
545
546
547 (% 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" %)​
548
549
550 === 3.3.6 Uplink on demand ===
551
552
553 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.
554
555 (% style="color:blue" %)**Downlink control command:**
556
557 (% style="color:#4472c4" %)** 0x08 command**(%%): Poll an uplink with current command set in RS485-LN.
558
559 (% style="color:#4472c4" %)** 0xA8 command**(%%): Send a command to RS485-LN and uplink the output from sensors.
560
561
562 === 3.3.7 Uplink on Interrupt ===
563
564
565 RS485-LN support external Interrupt uplink since hardware v1.2 release.
566
567 (% 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" %)​
568
569 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.
570
571
572 == 3.4 Uplink Payload ==
573
574
575 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
576 |(% style="background-color:#4f81bd; color:white; width:70px" %)(((
577 **Size(bytes)**
578 )))|(% style="background-color:#4f81bd; color:white; width:80px" %)**1**|(% style="background-color:#4f81bd; color:white; width:360px" %)(((
579 **Length depends on the return from the commands**
580 )))
581 |(% style="width:90px" %)(((
582 Value
583 )))|(% style="width:114px" %)(((
584 PAYLOAD_VER
585 )))|(% style="width:353px" %)(((
586 If the valid payload is too long and exceed the maximum
587
588 support payload length in server, server will show payload not
589
590 provided in the LoRaWAN server.
591 )))
592
593 (% 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"]](%%)Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
594
595
596 == 3.5 Configure RS485-LN via AT or Downlink ==
597
598
599 (((
600 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
601 )))
602
603 (((
604 There are two kinds of Commands:
605 )))
606
607 * (((
608 (% 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]]
609 )))
610
611 * (((
612 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
613 )))
614
615 (((
616
617 )))
618
619
620 === 3.5.1 Common Commands ===
621
622
623 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]]
624
625
626 === 3.5.2 Downlink Response(Since firmware v1.4) ===
627
628
629 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.
630
631
632 (% 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"]]
633
634 (% title="Click and drag to resize" %)​
635
636 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)
637
638
639 === 3.5.3 Sensor related commands ===
640
641
642
643 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
644
645
646 (((
647 This command is used to configure the RS485 devices; they won't be used during sampling. Max Length of AT+CFGDEV is **40 bytes**.
648 )))
649
650 (((
651 * (% style="color:#037691" %)**AT Command**
652
653 (((
654 (% style="color:#4472c4" %)** 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
655 )))
656 )))
657
658 (((
659
660 )))
661
662 * (((
663 (% style="color:#037691" %)**Downlink Payload**
664 )))
665
666 (((
667 Format: (% style="color:#4472c4" %)** A8 MM NN XX XX XX XX YY**
668 )))
669
670 (((
671 Where:
672 )))
673
674 * (((
675 MM: 1: add CRC-16/MODBUS ; 0: no CRC
676 )))
677 * (((
678 NN: The length of RS485 command
679 )))
680 * (((
681 XX XX XX XX: RS485 command total NN bytes
682 )))
683 * (((
684 (((
685 YY: How many bytes will be uplink from the return of this RS485 command,
686 )))
687
688 * (((
689 if YY=0, RS485-LN will execute the downlink command without uplink;
690 )))
691 * (((
692 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
693 )))
694 * (((
695 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
696 )))
697 )))
698
699 (((
700
701
702 (% style="color:blue" %)**Example 1:**  (%%) ~-~-> Configure without ask for uplink (YY=0)
703 )))
704
705 (((
706 To connect a Modbus Alarm with below commands.
707 )))
708
709 * (((
710 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.
711 )))
712
713 * (((
714 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.
715 )))
716
717 (((
718
719
720 So if user want to use downlink command to control to RS485 Alarm, he can use:
721 )))
722
723 (((
724 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
725 )))
726
727 (((
728 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
729 )))
730
731 (((
732 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.
733 )))
734
735 (((
736
737 )))
738
739 (((
740 (% style="color:blue" %)**Example 2:**  (%%)
741 )))
742
743 (((
744 Check TTL Sensor return:
745 )))
746
747 (((
748 (((
749 [[image:http://8.211.40.43/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/test/WebHome/1654132684752-193.png?rev=1.1||alt="1654132684752-193.png"]](% title="Click and drag to resize" %)​
750 )))
751 )))
752
753
754
755 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
756
757
758 (((
759 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.
760 )))
761
762 (((
763 * (% style="color:#037691" %)**AT Command:**
764
765 (% style="color:#4472c4" %)** AT+PAYVER:    ** (%%) Set PAYVER field = 1
766
767
768 )))
769
770 * (((
771 (% style="color:#037691" %)**Downlink Payload:**
772 )))
773
774 (((
775 (% style="color:#4472c4" %)** 0xAE 01** (%%) ~-~->  Set PAYVER field =  0x01
776 )))
777
778 (((
779 (% style="color:#4472c4" %)** 0xAE 0F**   (%%) ~-~->  Set PAYVER field =  0x0F
780 )))
781
782
783 **1 )  Add the interrupt flag at the highest bit of the Payver byte, that is, Byte7 of the first byte. (Since v1.4.0)**
784
785
786 [[image:image-20220824145428-2.png||height="168" width="1300"]]
787
788
789
790 **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.**
791
792
793 [[image:image-20220824145428-3.png||height="308" width="1200"]]
794
795
796
797 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
798
799
800 (((
801 AT+COMMANDx or AT+DATACUTx
802 )))
803
804 (((
805 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"]].
806 )))
807
808 (((
809
810 )))
811
812 * (((
813 (% style="color:#037691" %)**AT Command:**
814 )))
815
816 (% style="color:#4472c4" %)** AT+COMMANDx:    ** (%%) Configure RS485 read command to sensor.
817
818 (% style="color:#4472c4" %)** AT+DATACUTx:        **(%%) Configure how to handle return from RS485 devices.
819
820
821 * (((
822 (% style="color:#037691" %)**Downlink Payload:**
823 )))
824
825 (((
826 (% style="color:#4472c4" %)** 0xAF**(%%) downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
827
828
829 )))
830
831 (((
832 (% style="color:red" %)**Note : if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
833
834
835 )))
836
837 (((
838 Format: (% style="color:#4472c4" %)** AF MM NN LL XX XX XX XX YY**
839 )))
840
841 (((
842 Where:
843 )))
844
845 * (((
846 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
847 )))
848 * (((
849 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
850 )))
851 * (((
852 LL:  The length of AT+COMMAND or AT+DATACUT command
853 )))
854 * (((
855 XX XX XX XX: AT+COMMAND or AT+DATACUT command
856 )))
857 * (((
858 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.
859 )))
860
861 (((
862
863
864 **Example:**
865 )))
866
867 (((
868 (% 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
869 )))
870
871 (((
872 (% 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**
873 )))
874
875 (((
876 (% 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**
877 )))
878
879
880
881 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
882
883
884 (((
885 (% style="color:#4472c4" %)** 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]].
886 )))
887
888 (((
889 This command is valid since v1.3 firmware version
890 )))
891
892 (((
893 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.
894 )))
895
896 (((
897
898 )))
899
900 (((
901 **Example:**
902 )))
903
904 * (((
905 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
906 )))
907 * (((
908 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.
909 )))
910 * (((
911 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.
912
913
914 )))
915
916 (% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]]
917
918 (% title="Click and drag to resize" %)​
919
920 (% 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" %)​
921
922 * (((
923 (% style="color:#037691" %)**Downlink Command:**
924 )))
925
926 **~ (% style="color:#4472c4" %)A9 aa(%%)** ~-~-> Same as AT+MBFUN=aa
927
928
929 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
930
931
932 (((
933 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.
934 )))
935
936 (((
937 Default value: 0, range:  0 ~~ 65 seconds
938 )))
939
940 (((
941 * (% style="color:#037691" %)** AT Command:**
942
943 (% style="color:#4472c4" %)** AT+CMDDLaa=hex(bb cc)*1000**
944 )))
945
946 (((
947
948
949 **Example:**
950 )))
951
952 (((
953 (% style="color:#4472c4" %)** AT+CMDDL1=1000** (%%)to send the open time to 1000ms
954 )))
955
956 (((
957
958 )))
959
960 * (((
961 (% style="color:#037691" %)** Downlink Payload:**
962 )))
963
964 (((
965 (% style="color:#4472c4" %)** 0x AA aa bb cc**(%%) Same as: AT+CMDDLaa=hex (bb cc)
966 )))
967
968 (((
969
970
971 **Example:**
972 )))
973
974 (((
975 **0xAA 01 03 E8**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
976 )))
977
978
979
980 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
981
982
983 (((
984 Define to use one uplink or multiple uplinks for the sampling.
985 )))
986
987 (((
988 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
989
990
991 )))
992
993 (((
994 * (% style="color:#037691" %)** AT Command:**
995
996 (% style="color:#4472c4" %)** AT+DATAUP=0**
997
998 (% style="color:#4472c4" %)** AT+DATAUP=1**
999
1000
1001 )))
1002
1003 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1004
1005 Each uplink is sent to the server at 20-second intervals when segmented.
1006
1007
1008 * (((
1009 (% style="color:#037691" %)** Downlink Payload:**
1010 )))
1011
1012 (% style="color:#4472c4" %)** 0xAD 00** (%%) **~-~->** Same as AT+DATAUP=0
1013
1014 (% style="color:#4472c4" %)** 0xAD 01**  (%%) **~-~->** Same as AT+DATAUP=1  ~/~/Each uplink is sent to the server one after the other as it is segmented.
1015
1016
1017 (Since firmware v1.4.0)
1018
1019 * (((
1020 (% style="color:#037691" %)** AT Command:**
1021 )))
1022
1023 (% style="color:#4472c4" %)** AT+DATAUP=1,Timeout**
1024
1025
1026 * (((
1027 (% style="color:#037691" %)** Downlink Payload:**
1028 )))
1029
1030 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1031
1032 Each uplink is sent to the server at 20-second intervals when segmented.
1033
1034
1035 ==== (% style="color:blue" %)**Cut data separation processing(Since Version 1.4.2)**(%%) ====
1036
1037
1038 AT+NEWLINE command, which only takes effect when AT+DATAUP=1 or AT+DATAUP=1, timeout.
1039
1040 When not set, each part of AT+DATAUP is sent according to the maximum number of bytes of DR.
1041
1042 When setting, each part of AT+DATAUP is sent according to the value set by AT+NEWLINE.
1043
1044
1045 * (((
1046 (% style="color:#037691" %)** AT Command:**
1047 )))
1048
1049 (% style="color:#4472c4" %)//**AT+NEWLINE=ALL**//(%%)//   //The data cut out by each AT+COMMANDx command is sent separately as an uplink.
1050
1051 (% style="color:#4472c4" %)//**AT+NEWLINE=ALL**//(%%)//   equal：  (% style="color:#4472c4" %)**AT+NEWLINE=1+2+3+4+5+6+7+8+9+10+11+12+13+14+15**//
1052
1053
1054 (% style="color:#4472c4" %)//**AT+NEWLINE=a+b+c**//(%%)//  //The data returned by all commands is divided into three parts, COMMAND(1~~a) is the first part, COMMAND(a+1~~b) is the second part,COMMAND(b+1~~c) is the third part.
1055
1056
1057 (% style="color:#4472c4" %)//**AT+NEWLINE=NULL**//(%%)//  //Turn off the functionality of this AT command.
1058
1059
1060 * (((
1061 (% style="color:#037691" %)** Downlink Payload:**
1062 )))
1063
1064 //AT+NEWLINE=ALL  ~-~-->  (% style="color:#4472c4" %)**0xAC 01**//
1065
1066 // AT+NEWLINE= NULL  ~-~-->  (% style="color:#4472c4" %)**0xAC 00**//
1067
1068 //AT+NEWLINE= a+b+c   ~-~-->  (% style="color:#4472c4" %)**0xAC number of bytes a b c**//
1069
1070 //AT+NEWLINE= 1+5+15 ~-~-->  (% style="color:#4472c4" %)**0xAC 03 01 05 0F**//
1071
1072
1073 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
1074
1075
1076 (((
1077 Ask device to send an uplink immediately.
1078 )))
1079
1080 * (((
1081 (% style="color:#037691" %)** AT Command:**
1082 )))
1083
1084 (((
1085 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
1086 )))
1087
1088 (((
1089
1090 )))
1091
1092 * (((
1093 (% style="color:#037691" %)** Downlink Payload:**
1094 )))
1095
1096 (((
1097 (% style="color:#4472c4" %)** 0x08 FF**(%%), RS485-LN will immediately send an uplink.
1098 )))
1099
1100
1101
1102 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
1103
1104
1105 (((
1106 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1107
1108
1109 )))
1110
1111 * (((
1112 (% style="color:#037691" %)** AT Command:**
1113 )))
1114
1115 (((
1116 (% style="color:#4472c4" %)** AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase
1117 )))
1118
1119 (((
1120
1121
1122 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1123 )))
1124
1125 (((
1126 Example screen shot after clear all RS485 commands. 
1127 )))
1128
1129 (((
1130
1131 )))
1132
1133 (((
1134 The uplink screen shot is:
1135 )))
1136
1137 (% 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" %)​
1138
1139
1140 * (((
1141 (% style="color:#037691" %)** Downlink Payload:**
1142 )))
1143
1144 (((
1145 (% style="color:#4472c4" %)** 0x09 aa bb** (%%) same as AT+CMDEAR=aa,bb
1146 )))
1147
1148
1149
1150 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1151
1152
1153 (((
1154 Set the Rs485 serial communication parameters:
1155 )))
1156
1157 (((
1158 (% style="color:#037691" %)**AT Command:**
1159 )))
1160
1161 (((
1162 * Set Baud Rate
1163 )))
1164
1165 (% style="color:#4472c4" %)** 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
1166
1167
1168 (((
1169 * Set UART Parity
1170 )))
1171
1172 (% style="color:#4472c4" %)** AT+PARITY=0** (%%) ~/~/  Option: 0: no parity, 1: odd parity, 2: even parity
1173
1174
1175 (((
1176 * Set STOPBIT
1177 )))
1178
1179 (% style="color:#4472c4" %)** AT+STOPBIT=0** (%%) ~/~/  Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1180
1181
1182 (((
1183 (% style="color:#037691" %)**Downlink Payload:**
1184 )))
1185
1186 (((
1187 (% style="color:#4472c4" %)** A7 01 aa bb**:   (%%) Same  AT+BAUDR=hex(aa bb)*100
1188 )))
1189
1190 (((
1191 **Example:**
1192 )))
1193
1194 * (((
1195 A7 01 00 60  same as AT+BAUDR=9600
1196 )))
1197 * (((
1198 A7 01 04 80  same as AT+BAUDR=115200
1199 )))
1200
1201 (((
1202 * A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1203 )))
1204
1205 (((
1206 * A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1207 )))
1208
1209
1210
1211
1212 ==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.0)**(%%) ====
1213
1214
1215 * (((
1216 (% style="color:#037691" %)** AT Command:**
1217 )))
1218
1219 (% style="color:#4472c4" %)** AT+DATABIT=7    **(%%)~/~/ Set the data bits to 7
1220
1221 (% style="color:#4472c4" %)** AT+DATABIT=8    **(%%)~/~/ Set the data bits to 8
1222
1223 * (((
1224 (% style="color:#037691" %)**Downlink Payload:**
1225 )))
1226
1227 (% style="color:#4472c4" %)** A7 04 07**(%%): Same as  AT+DATABIT=7
1228
1229 (% style="color:#4472c4" %)** A7 04 08**(%%): Same as  AT+DATABIT=8
1230
1231
1232
1233 ==== (% style="color:blue" %)**Encrypted payload(Since Version 1.4.0)**(%%) ====
1234
1235 (((
1236
1237 )))
1238
1239 * (((
1240 (% style="color:#037691" %)** AT Command:**
1241 )))
1242
1243 (% style="color:#4472c4" %)** AT+DECRYPT=1  ** (%%) ~/~/ The payload is uploaded without encryption
1244
1245 (% style="color:#4472c4" %)** AT+DECRYPT=0  ** (%%) ~/~/ Encrypt when uploading payload (default)
1246
1247
1248
1249 ==== (% style="color:blue" %)**Get sensor value(Since Version 1.4.0)**(%%) ====
1250
1251
1252 * (((
1253 (% style="color:#037691" %)** AT Command:**
1254 )))
1255
1256 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=0  **(%%) ~/~/ The serial port gets the reading of the current sensor
1257
1258 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=1  **(%%) ~/~/ The serial port gets the current sensor reading and uploads it.
1259
1260
1261
1262 ==== (% style="color:blue" %)**Resets the downlink packet count(Since Version 1.4.0)**(%%) ====
1263
1264
1265 * (((
1266 (% style="color:#037691" %)** AT Command:**
1267 )))
1268
1269 (% style="color:#4472c4" %)** 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)
1270
1271 (% style="color:#4472c4" %)** 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.
1272
1273
1274
1275 ==== (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches(Since Version 1.4.0)**(%%) ====
1276
1277
1278 * (((
1279 (% style="color:#037691" %)** AT Command:**
1280 )))
1281
1282 (% style="color:#4472c4" %)** 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)
1283
1284 (% style="color:#4472c4" %)** 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.
1285
1286
1287 * (((
1288 (% style="color:#037691" %)** Downlink Payload:**
1289 )))
1290
1291 (% style="color:#4472c4" %)** 0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1292
1293
1294
1295 ==== (% style="color:blue" %)**Copy downlink to uplink (Since Version 1.4.0)**(%%) ====
1296
1297
1298 * (((
1299 (% style="color:#037691" %)** AT Command:**
1300 )))
1301
1302 (% style="color:#4472c4" %)** 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.
1303
1304 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.
1305
1306
1307 [[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"]]
1308
1309 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1310
1311
1312
1313 [[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"]]
1314
1315 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1316
1317
1318
1319 ==== (% style="color:blue" %)**Query version number and frequency band 、TDC(Since Version 1.4.0)**(%%) ====
1320
1321
1322 (((
1323 * (% style="color:#037691" %)**Downlink Payload:**
1324
1325 (% style="color:#4472c4" %)** 26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1326 )))
1327
1328
1329 Example：
1330
1331
1332 [[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"]]
1333
1334
1335
1336 ==== (% style="color:blue" %)** Monitor RS485 communication of other devices(Since Version 1.4.0)**(%%) ====
1337
1338
1339 * (((
1340 (% style="color:#037691" %)** AT Command:**
1341 )))
1342
1343 (% style="color:#4472c4" %)**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.
1344
1345 (% style="color:#4472c4" %)**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.
1346
1347 (% style="color:#4472c4" %)**AT+RXMODE=0,0  ** (%%) ~/~/  Disable this mode (default)
1348
1349
1350 * (((
1351 (% style="color:#037691" %)**Downlink Payload:**
1352 )))
1353
1354 (% style="color:#4472c4" %)** A6 aa bb bb               ** (%%) ~/~/ same as AT+RXMODE=aa,bb
1355
1356 [[image:image-20220824144240-1.png]]
1357
1358
1359 == 3.6 Listening mode for RS485 network ==
1360
1361
1362 (((
1363 This feature support since firmware v1.4
1364 )))
1365
1366 (((
1367 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.
1368
1369
1370 )))
1371
1372 (% 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"]]
1373
1374 (% title="Click and drag to resize" %)​
1375
1376 (((
1377 To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
1378 )))
1379
1380 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
1381 |=(% style="width: 156px; background-color:#4F81BD;color:white" %)(((
1382 **Command example**
1383 )))|=(% style="width: 355px; background-color:#4F81BD;color:white" %)(((
1384 **Function**
1385 )))
1386 |(% style="width:156px" %)(((
1387 AT+RXMODE=1,10
1388 )))|(% style="width:352px" %)(((
1389 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.
1390 )))
1391 |(% style="width:156px" %)(((
1392 AT+RXMODE=2,500
1393 )))|(% style="width:352px" %)(((
1394 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
1395 )))
1396 |(% style="width:156px" %)(((
1397 AT+RXMODE=0,0
1398 )))|(% style="width:352px" %)(((
1399 Disable listening mode. This is the default settings.
1400 )))
1401 |(% style="width:156px" %)(((
1402
1403 )))|(% style="width:352px" %)(((
1404 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1405 )))
1406
1407 (((
1408
1409
1410 (% style="color:#037691" %)**Downlink Command:**
1411 )))
1412
1413 (((
1414 (% style="color:#4472c4" %)** 0xA6 aa bb cc **(%%) same as AT+RXMODE=aa,(bb<<8 | cc)
1415 )))
1416
1417 (((
1418
1419 )))
1420
1421 (((
1422 **Example**:
1423 )))
1424
1425 (((
1426 The RS485-LN is set to AT+RXMODE=2,1000
1427 )))
1428
1429 (((
1430 There is a two Modbus commands in the RS485 network as below:
1431 )))
1432
1433 (((
1434 The Modbus master send a command: (% style="background-color:#ffc000" %)**01 03 00 00 00 02 c4 0b**
1435 )))
1436
1437 (((
1438 And Modbus slave reply with: (% style="background-color:green" %)**01 03 04 00 00 00 00 fa 33**
1439 )))
1440
1441 (((
1442 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**
1443
1444
1445 )))
1446
1447 (((
1448 (% 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" %)​
1449 )))
1450
1451
1452
1453 (((
1454 (% 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.**
1455 )))
1456
1457
1458 == 3.7 Buttons ==
1459
1460
1461 (% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
1462 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)**Button**|=(% style="width: 380px;background-color:#4F81BD;color:white" %)**Feature**
1463 |(% 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**
1464 |(% style="width:50px" %)RST|(% style="width:361px" %)Reboot RS485
1465 |(% style="width:50px" %)PRO|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1466
1467 == 3.8 LEDs ==
1468
1469
1470 (% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
1471 |=(% style="width: 50px;background-color:#4F81BD;color:white" %)**LEDs**|=(% style="width: 380px;background-color:#4F81BD;color:white" %)**Feature**
1472 |PWR|Always on if there is power
1473 |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.
1474
1475 = 4. Case Study =
1476
1477
1478 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]]
1479
1480
1481 = 5. Use AT Command =
1482
1483 == 5.1 Access AT Command ==
1484
1485
1486 (((
1487 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.
1488
1489
1490 )))
1491
1492 (% 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" %)​
1493
1494
1495
1496 (((
1497 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:
1498
1499
1500 )))
1501
1502 (% 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" %)​
1503
1504
1505 (((
1506 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/]]
1507 )))
1508
1509
1510 == 5.2 Common AT Command Sequence ==
1511
1512 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1513
1514
1515 If device has not joined network yet:
1516
1517 * (% style="color:#037691" %)**AT+FDR**
1518 * (% style="color:#037691" %)**AT+NJM=0**
1519 * (% style="color:#037691" %)**ATZ**
1520
1521 (((
1522
1523
1524 If device already joined network:
1525
1526 * (% style="color:#037691" %)**AT+NJM=0**
1527 * (% style="color:#037691" %)**ATZ**
1528 )))
1529
1530
1531
1532 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1533
1534
1535 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1536
1537 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1538
1539 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1540
1541 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1542
1543 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1544
1545 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1546
1547 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1548
1549 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1550
1551 (% 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.
1552
1553 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1554
1555
1556 (% style="color:red" %)**Note:**
1557
1558 (((
1559 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1560 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1561 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.
1562 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
1563
1564
1565 )))
1566
1567 (% 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" %)​
1568
1569
1570 = 6. FAQ =
1571
1572 == 6.1 How to upgrade the image? ==
1573
1574
1575 (((
1576 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1577 )))
1578
1579 * (((
1580 Support new features
1581 )))
1582 * (((
1583 For bug fix
1584 )))
1585 * (((
1586 Change LoRaWAN bands.
1587 )))
1588
1589 (((
1590 Below shows the hardware connection for how to upload an image to RS485-LN:
1591 )))
1592
1593 (% 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"]]
1594
1595 (% title="Click and drag to resize" %)​
1596
1597 (((
1598 (% 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]].
1599
1600
1601 )))
1602
1603 (((
1604 (% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:https://www.dropbox.com/sh/g99v0fxcltn9r1y/AACP33wo_ZQLsxW2MJ70oUoba/RS485-LN/Firmware?dl=0&subfolder_nav_tracking=1]].
1605
1606
1607 )))
1608
1609 (((
1610 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1611
1612
1613 )))
1614
1615 (((
1616 (((
1617 (((
1618 (% 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.
1619 )))
1620 )))
1621 )))
1622
1623
1624 (% 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" %)​
1625
1626
1627 (% 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" %)​
1628
1629
1630 (% 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" %)​
1631
1632
1633
1634 (% style="color:red" %)**Users can select the new burning software STM32Cubeprogramer for firmware upgrade and follow the same connection steps to enter burning mode (until SYS LED is RED ON):**
1635
1636 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H4.2.FirmwareupgradeusingSTM32Cubeprogramer>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/#H4.2.FirmwareupgradeusingSTM32Cubeprogramer]]
1637
1638
1639 (% 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:**
1640
1641 (% 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" %)​
1642
1643
1644 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1645
1646
1647 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1648
1649
1650 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1651
1652
1653 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"]].
1654
1655
1656 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1657
1658
1659 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1660
1661 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1662
1663
1664 == 6.5 Can i use point to point communication for RS485-LN? ==
1665
1666
1667 Yes, please updating point-to-point [[firmware>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AACP33wo_ZQLsxW2MJ70oUoba/RS485-LN/Firmware?dl=0&subfolder_nav_tracking=1]]，then refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1668
1669
1670 == 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1671
1672
1673 [[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/]]
1674
1675
1676 == 6.7 How to judge whether there is a problem with the set COMMAND ==
1677
1678 === 6.7.1 Introduce: ===
1679
1680
1681 Users can use below the structure to fast debug the communication between RS485BL and RS485-LN. The principle is to put the PC in the RS485 network and sniff the packet between Modbus MTU and RS485-BL/LN. We can use this way to:
1682
1683 1. Test if Modbus-MTU works with PC commands.
1684 1. Check if RS485-LN sent the expected command to Mobus-MTU
1685 1. Check if Modbus-MTU return back the expected result to RS485-LN.
1686 1. If both b) and c) has issue, we can compare PC’s output and RS485-LN output.
1687
1688 [[image:image-20240816112950-1.png||height="382" width="731"]]
1689
1690
1691 Example Connection:
1692
1693 [[image:image-20221130104310-2.png]]
1694
1695
1696 === 6.7.2 Set up PC to monitor RS485 network With Serial tool ===
1697
1698
1699 (% style="color:red" %)**Note: Receive and send set to hex mode**
1700
1701 [[image:image-20221130104310-3.png||height="616" width="714"]]
1702
1703
1704 === 6.7.3 With ModRSsim2: ===
1705
1706
1707 (% style="color:blue" %)**(1) Select serial port MODBUS RS-232**
1708
1709 [[image:image-20221130104310-4.png||height="390" width="865"]]
1710
1711
1712 (% style="color:blue" %)**(2) Click the serial port icon**
1713
1714 [[image:image-20221130104310-5.png||height="392" width="870"]]
1715
1716
1717 (% style="color:blue" %)**(3) After selecting the correct serial port and baud rate, click ok**
1718
1719 [[image:image-20221130104310-6.png]]
1720
1721
1722 (% style="color:blue" %)**(4) Click the comms.**
1723
1724 [[image:image-20221130104310-7.png||height="376" width="835"]]
1725
1726 (% class="wikigeneratedid" id="HRunRS485-LN2FBLcommandandmonitorifitiscorrect." %)
1727 **Run RS485-LN/BL command and monitor if it is correct.**
1728
1729
1730 === 6.7.4 Example – Test the CFGDEV command ===
1731
1732
1733 RS485-LN sent below command:
1734
1735 (% style="color:blue" %)**AT+CFGDEV=01 03 00 20 00 01,1**(%%) to RS485 network, and PC is able to get this command and return commands from MTU to show in the serial tool.
1736
1737
1738 We can see the output from the Serial port tool to analyze. And check if they are expected result.
1739
1740 [[image:image-20221130104310-8.png||height="214" width="797"]]
1741
1742
1743 We can also use (% style="color:blue" %)**ModRSsim2**(%%) to see the output.
1744
1745 [[image:image-20221130104310-9.png||height="531" width="729"]]
1746
1747
1748 === 6.7.5 Example – Test CMD command sets. ===
1749
1750
1751 Run (% style="color:blue" %)**AT+SENSORVALUE=1**(%%) to test the CMD commands set in RS485-LN.
1752
1753
1754 (% style="color:blue" %)**Serial port tool:**
1755
1756 [[image:image-20221130104310-10.png||height="339" width="844"]]
1757
1758
1759 (% style="color:blue" %)**ModRSsim2:**
1760
1761 [[image:image-20221130104310-11.png||height="281" width="962"]]
1762
1763
1764 === 6.7.6 Test with PC ===
1765
1766
1767 If there is still have problem to set up correctly the commands between RS485-LN and MTU. User can test the correct RS485 command set in PC and compare with the RS485 command sent out via RS485-LN. as long as both commands are the same, the MTU should return correct result.
1768
1769
1770 Or User can send the working commands set in PC serial tool to Dragino Support to check what should be configured in RS485-LN.
1771
1772 (% style="color:blue" %)**Connection method：**
1773
1774 [[image:image-20221130104310-12.png]]
1775
1776
1777 (% style="color:blue" %)**Link situation:**
1778
1779 [[image:image-20221130104310-13.png||height="458" width="486"]]
1780
1781
1782 [[image:image-20221130104310-14.png||height="371" width="823"]]
1783
1784
1785 == 6.8 Where to get the decoder for RS485-LN? ==
1786
1787
1788 The decoder for RS485-LN needs to be written by yourself. Because the sensor to which the user is connected is custom, the read device data bytes also need custom parsing, so there is no universal decoder. We can only provide [[templates>>https://github.com/dragino/dragino-end-node-decoder/tree/main/RS485-LN]] for decoders (no intermediate data parsing part involved)
1789
1790
1791 == 6.9 How to configure RS485 commands more conveniently？ ==
1792
1793
1794 Dragino has developed an application for the RS485 series of products.
1795
1796 It can help you configure RS485 sensors more conveniently
1797 Please refer to the link below for specific usage：
1798
1799 [[RS485 Configure Tool - DRAGINO>>url:http://wiki.dragino.com/xwiki/bin/view/Main/RS485_Configure_Tool/#HTableofContentsFF1A]]
1800
1801
1802 = 7. Trouble Shooting =
1803
1804 == 7.1 Downlink doesn't work, how to solve it? ==
1805
1806
1807 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1808
1809
1810 == 7.2 Why customers can't join TTN V3 in US915 /AU915 bands? ==
1811
1812
1813 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1814
1815
1816 == 7.3 Why can't customers see the device's data in the server when the data is too long? ==
1817
1818 This is due to the limitation of the lorawan protocol, and the fixed DR needs to be adjusted to improve this problem.
1819
1820 Please refer to the following link for the number of bytes limited by different frequencies and different DRs in the lorawan protocol
1821
1822 [[lora-alliance.org/wp-content/uploads/2021/05/RP002-1.0.3-FINAL-1.pdf>>url:https://lora-alliance.org/wp-content/uploads/2021/05/RP002-1.0.3-FINAL-1.pdf]]
1823
1824 Example:
1825
1826 [[image:image-20240620145456-1.png]]
1827
1828 Please refer to the following command to fix DR
1829
1830 AT+ADR=0
1831
1832 AT+DR=3
1833
1834 Downlink command:
1835
1836 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.4DataRate>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.4DataRate]]
1837
1838
1839
1840 = 8. Order Info =
1841
1842
1843 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1844
1845 (% style="color:blue" %)**XXX:**
1846
1847 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1848 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1849 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1850 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1851 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1852 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1853 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1854 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1855 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1856 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1857
1858 = 9. Packing Info =
1859
1860
1861 **Package Includes**:
1862
1863 * RS485-LN x 1
1864 * Stick Antenna for LoRa RF part x 1
1865 * Program cable x 1
1866
1867 **Dimension and weight**:
1868
1869 * Device Size: 13.5 x 7 x 3 cm
1870 * Device Weight: 105g
1871 * Package Size / pcs : 14.5 x 8 x 5 cm
1872 * Weight / pcs : 170g
1873
1874 = 10. FCC Caution for RS485LN-US915 =
1875
1876
1877 (((
1878 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1879 )))
1880
1881 (((
1882 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.
1883 )))
1884
1885 (((
1886
1887 )))
1888
1889 (((
1890 (% style="color:red" %)**IMPORTANT NOTE:**
1891 )))
1892
1893 (((
1894 (% 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:
1895 )))
1896
1897 (((
1898 —Reorient or relocate the receiving antenna.
1899 )))
1900
1901 (((
1902 —Increase the separation between the equipment and receiver.
1903 )))
1904
1905 (((
1906 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1907 )))
1908
1909 (((
1910 —Consult the dealer or an experienced radio/TV technician for help.
1911 )))
1912
1913 (((
1914
1915 )))
1916
1917 (((
1918 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1919 )))
1920
1921 (((
1922 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.
1923 )))
1924
1925
1926 = 11. Support =
1927
1928
1929 * (((
1930 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.
1931 )))
1932 * (((
1933 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]].
1934
1935
1936
1937 )))

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