Version 108.1 by Bei Jinggeng on 2023/11/27 15:23
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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 ==
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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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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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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 (((
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131 v1.2: Add External Interrupt Pin.
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135 v1.0: Release
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141
142 = 2. Power ON Device =
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146 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
147
148 * Power Source VIN to RS485-LN VIN+
149 * Power Source GND to RS485-LN VIN-
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151 (((
152 Once there is power, the RS485-LN will be on.
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159
160 = 3. Operation Mode =
161
162 == 3.1 How it works? ==
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164
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166 (((
167 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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172
173 == 3.2 Example to join LoRaWAN network ==
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176 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 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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188 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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197 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 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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207 Each RS485-LN is shipped with a sticker with unique device EUI:
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211 (% 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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216 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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222 **Add APP EUI in the application.**
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232 (% 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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235 (% title="Click and drag to resize" %)​
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237 You can also choose to create the device manually.
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239 (% 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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242
243 **Add APP KEY and DEV EUI**
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245 (% 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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263
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
272 === 3.3.1 Method 1 ~-~- via RS485 Configure Tool ===
273
274 Use the RS485 Configure tool is the recommand method. Please see the instruction of how to use the tool:
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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
282 === 3.3.2  Method 2 ~-~- via AT Commands ===
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284 )))
285
286 ==== 3.3.2.1 Configure UART settings for RS485 or TTL communication ====
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288 RS485-LN can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
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290 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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292 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
293 |=(% style="width: 126px; background-color:#D9E2F3;color:#0070C0" %)(((
294 **AT Commands**
295 )))|=(% style="width: 187px; background-color:#D9E2F3;color:#0070C0" %)(((
296 **Description**
297 )))|=(% style="width: 197px;background-color:#D9E2F3;color:#0070C0" %)(((
298 **Example**
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300 |(% style="width:126px" %)(((
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303 (((
304 AT+BAUDR
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306 )))|(% style="width:177px" %)(((
307 Set the baud rate (for RS485 connection). Default Value is: 9600.
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309 (((
310 AT+BAUDR=9600
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313 (((
314 Options: (1200,2400,4800,
315 14400,19200,115200)
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318 |(% style="width:126px" %)(((
319 AT+PARITY
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321 Set UART parity (for RS485 connection)
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323 (((
324 AT+PARITY=0
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327 (((
328 Option: 0: no parity,
329 1: odd parity,
330 2: even parity
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333 |(% style="width:126px" %)(((
334 AT+STOPBIT
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337 Set serial stopbit (for RS485 connection)
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339 )))|(% style="width:193px" %)(((
340 (((
341 AT+STOPBIT=0 for 1bit
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343
344 (((
345 AT+STOPBIT=1 for 1.5 bit
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348 (((
349 AT+STOPBIT=2 for 2 bits
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351 )))
352
353 === 3.3.3 Configure sensors ===
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356 (((
357 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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360 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
361 |=(% style="width: 122px; background-color:#D9E2F3;color:#0070C0" %)**AT Commands**|=(% style="width: 198px; background-color:#D9E2F3;color:#0070C0" %)**Description**|=(% style="width: 190px;background-color:#D9E2F3;color:#0070C0" %)**Example**
362 |(% style="width:122px" %)AT+CFGDEV|(% style="width:196px" %)(((
363 (((
364 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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366
367 (((
368 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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370
371 (((
372 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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374 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
375
376 === 3.3.4 Configure read commands for each sampling ===
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378
379 (((
380 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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382 To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
383
384 This section describes how to achieve above goals.
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386 During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
387
388
389 (% style="color:#037691" %)**Each RS485 commands include two parts:**
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391
392 ~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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394 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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396 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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398
399 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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401 Below are examples for the how above AT Commands works.
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403
404 (% 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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406 (% border="1" style="background-color:#f2f2f2; width:499px" %)
407 |(% style="width:496px" %)(((
408 **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
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410 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
411
412 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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414
415 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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417 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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419
420 If a single command exceeds 14 bytes, you can use the command splicing function.
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422 When AT+CMDDLx=1, the commands of AT+COMMANDx and AT+COMMAND(x+1) will be merged.
423
424
425 **Examples:** To send 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F data it should be configured:
426
427 AT+COMMAND1=00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D,0
428
429 AT+COMMAND1=1
430
431 AT+COMMAND2=0E 0F,0
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433
434 (% 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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436 (% border="1" style="background-color:#f2f2f2; width:510px" %)
437 |(% style="width:510px" %)(((
438 **AT+DATACUTx=a,b,c**
439
440 * **a: length for the return of AT+COMMAND**
441 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
442 * **c: define the position for valid value.  **
443 )))
444
445 **Examples:**
446
447
448 * (% style="color:#037691" %)**Grab bytes**
449
450 (% 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" %)​
451
452
453
454 * (% style="color:#037691" %)**Grab a section**
455
456 (% 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" %)​
457
458
459
460 * (% style="color:#037691" %)**Grab different sections**
461
462 (% 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" %)​
463
464
465 )))
466
467 === 3.3.5 Compose the uplink payload ===
468
469
470 (((
471 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.**
472
473
474 )))
475
476 (((
477 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
478
479
480 )))
481
482 (((
483 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
484 )))
485
486 (((
487 Final Payload is (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
488 )))
489
490 (((
491 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
492
493
494 )))
495
496 [[image:image-20220929111027-1.png||height="509" width="685"]](% title="Click and drag to resize" %)​
497
498
499 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
500
501
502 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
503
504 Final Payload is (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
505
506
507 ~1. PAYVER: Defined by AT+PAYVER
508
509 2. PAYLOAD COUNT: Total how many uplinks of this sampling.
510
511 3. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
512
513 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
514
515
516 (% 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" %)​
517
518
519 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
520
521 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
522
523 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
524
525 DATA3=the rest of Valid value of RETURN10= **30**
526
527
528 (% 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:**
529
530
531 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
532
533 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
534
535 * For US915 band, max 11 bytes for each uplink.
536
537 ~* For all other bands: max 51 bytes for each uplink.
538
539
540 (% style="color:red" %)** When AT+DATAUP=1, the maximum number of segments is 15, and the maximum total number of bytes is 1500;**
541
542 (% 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)**
543
544
545
546 Below are the uplink payloads:
547
548
549 (% 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" %)​
550
551
552 === 3.3.6 Uplink on demand ===
553
554
555 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.
556
557 (% style="color:blue" %)**Downlink control command:**
558
559 (% style="color:#4472c4" %)** 0x08 command**(%%): Poll an uplink with current command set in RS485-LN.
560
561 (% style="color:#4472c4" %)** 0xA8 command**(%%): Send a command to RS485-LN and uplink the output from sensors.
562
563
564 === 3.3.7 Uplink on Interrupt ===
565
566
567 RS485-LN support external Interrupt uplink since hardware v1.2 release.
568
569
570 (% 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" %)​
571
572 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.
573
574
575 == 3.4 Uplink Payload ==
576
577
578 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
579 |=(% scope="row" style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
580 Size(bytes)
581 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:80px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:360px" %)(((
582 **Length depends on the return from the commands**
583 )))
584 |=(% style="width: 90px;" %)(((
585 Value
586 )))|(% style="width:114px" %)(((
587 PAYLOAD_VER
588 )))|(% style="width:353px" %)(((
589 If the valid payload is too long and exceed the maximum
590
591 support payload length in server, server will show payload not
592
593 provided in the LoRaWAN server.
594 )))
595
596 (% 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"]]
597
598 (% title="Click and drag to resize" %)​
599
600 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
601
602
603 == 3.5 Configure RS485-LN via AT or Downlink ==
604
605
606 (((
607 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
608 )))
609
610 (((
611 There are two kinds of Commands:
612 )))
613
614 * (((
615 (% 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]]
616 )))
617
618 * (((
619 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
620 )))
621
622 (((
623
624 )))
625
626
627 === 3.5.1 Common Commands ===
628
629
630 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]]
631
632
633 === 3.5.2 Downlink Response(Since firmware v1.4) ===
634
635
636 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.
637
638
639 (% 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"]]
640
641 (% title="Click and drag to resize" %)​
642
643 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)
644
645
646 === 3.5.3 Sensor related commands ===
647
648
649
650 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
651
652
653 (((
654 This command is used to configure the RS485 devices; they won't be used during sampling. Max Length of AT+CFGDEV is **40 bytes**.
655 )))
656
657 (((
658 * (% style="color:#037691" %)**AT Command**
659
660 (((
661 (% 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
662 )))
663 )))
664
665 (((
666
667 )))
668
669 * (((
670 (% style="color:#037691" %)**Downlink Payload**
671 )))
672
673 (((
674 Format: (% style="color:#4472c4" %)** A8 MM NN XX XX XX XX YY**
675 )))
676
677 (((
678 Where:
679 )))
680
681 * (((
682 MM: 1: add CRC-16/MODBUS ; 0: no CRC
683 )))
684 * (((
685 NN: The length of RS485 command
686 )))
687 * (((
688 XX XX XX XX: RS485 command total NN bytes
689 )))
690 * (((
691 (((
692 YY: How many bytes will be uplink from the return of this RS485 command,
693 )))
694
695 * (((
696 if YY=0, RS485-LN will execute the downlink command without uplink;
697 )))
698 * (((
699 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
700 )))
701 * (((
702 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
703 )))
704 )))
705
706 (((
707
708
709 (% style="color:blue" %)**Example 1:**  (%%) ~-~-> Configure without ask for uplink (YY=0)
710 )))
711
712 (((
713 To connect a Modbus Alarm with below commands.
714 )))
715
716 * (((
717 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.
718 )))
719
720 * (((
721 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.
722 )))
723
724 (((
725
726
727 So if user want to use downlink command to control to RS485 Alarm, he can use:
728 )))
729
730 (((
731 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
732 )))
733
734 (((
735 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
736 )))
737
738 (((
739 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.
740 )))
741
742 (((
743
744 )))
745
746 (((
747 (% style="color:blue" %)**Example 2:**  (%%) ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
748 )))
749
750 (((
751 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
752 )))
753
754 (((
755
756 )))
757
758 (((
759 (((
760 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**
761 )))
762
763
764 )))
765
766 (((
767 (% 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" %)​
768 )))
769
770
771
772 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
773
774
775 (((
776 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.
777 )))
778
779 (((
780 * (% style="color:#037691" %)**AT Command:**
781
782 (% style="color:#4472c4" %)** AT+PAYVER:    ** (%%) Set PAYVER field = 1
783
784
785 )))
786
787 * (((
788 (% style="color:#037691" %)**Downlink Payload:**
789 )))
790
791 (((
792 (% style="color:#4472c4" %)** 0xAE 01** (%%) ~-~->  Set PAYVER field =  0x01
793 )))
794
795 (((
796 (% style="color:#4472c4" %)** 0xAE 0F**   (%%) ~-~->  Set PAYVER field =  0x0F
797 )))
798
799
800 **1 )  Add the interrupt flag at the highest bit of the Payver byte, that is, Byte7 of the first byte. (Since v1.4.0)**
801
802
803 [[image:image-20220824145428-2.png||height="168" width="1300"]]
804
805
806
807 **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.**
808
809
810 [[image:image-20220824145428-3.png||height="308" width="1200"]]
811
812
813
814 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
815
816
817 (((
818 AT+COMMANDx or AT+DATACUTx
819 )))
820
821 (((
822 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"]].
823 )))
824
825 (((
826
827 )))
828
829 * (((
830 (% style="color:#037691" %)**AT Command:**
831 )))
832
833 (% style="color:#4472c4" %)** AT+COMMANDx:    ** (%%) Configure RS485 read command to sensor.
834
835 (% style="color:#4472c4" %)** AT+DATACUTx:        **(%%) Configure how to handle return from RS485 devices.
836
837
838 * (((
839 (% style="color:#037691" %)**Downlink Payload:**
840 )))
841
842 (((
843 (% style="color:#4472c4" %)** 0xAF**(%%) downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
844
845
846 )))
847
848 (((
849 (% style="color:red" %)**Note : if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
850
851
852 )))
853
854 (((
855 Format: (% style="color:#4472c4" %)** AF MM NN LL XX XX XX XX YY**
856 )))
857
858 (((
859 Where:
860 )))
861
862 * (((
863 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
864 )))
865 * (((
866 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
867 )))
868 * (((
869 LL:  The length of AT+COMMAND or AT+DATACUT command
870 )))
871 * (((
872 XX XX XX XX: AT+COMMAND or AT+DATACUT command
873 )))
874 * (((
875 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.
876 )))
877
878 (((
879
880
881 **Example:**
882 )))
883
884 (((
885 (% 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
886 )))
887
888 (((
889 (% 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**
890 )))
891
892 (((
893 (% 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**
894 )))
895
896
897
898 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
899
900
901 (((
902 (% 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]].
903 )))
904
905 (((
906 This command is valid since v1.3 firmware version
907 )))
908
909 (((
910 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.
911 )))
912
913 (((
914
915 )))
916
917 (((
918 **Example:**
919 )))
920
921 * (((
922 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
923 )))
924 * (((
925 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.
926 )))
927 * (((
928 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.
929
930
931 )))
932
933 (% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]]
934
935 (% title="Click and drag to resize" %)​
936
937 (% 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" %)​
938
939
940
941 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
942
943
944 (((
945 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.
946 )))
947
948 (((
949 Default value: 0, range:  0 ~~ 65 seconds
950 )))
951
952 (((
953 * (% style="color:#037691" %)** AT Command:**
954
955 (% style="color:#4472c4" %)** AT+CMDDLaa=hex(bb cc)*1000**
956 )))
957
958 (((
959
960
961 **Example:**
962 )))
963
964 (((
965 (% style="color:#4472c4" %)** AT+CMDDL1=1000** (%%)to send the open time to 1000ms
966 )))
967
968 (((
969
970 )))
971
972 * (((
973 (% style="color:#037691" %)** Downlink Payload:**
974 )))
975
976 (((
977 (% style="color:#4472c4" %)** 0x AA aa bb cc**(%%) Same as: AT+CMDDLaa=hex (bb cc)
978 )))
979
980 (((
981
982
983 **Example:**
984 )))
985
986 (((
987 **0xAA 01 03 E8**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
988 )))
989
990
991
992 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
993
994
995 (((
996 Define to use one uplink or multiple uplinks for the sampling.
997 )))
998
999 (((
1000 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
1001
1002
1003 )))
1004
1005 (((
1006 * (% style="color:#037691" %)** AT Command:**
1007
1008 (% style="color:#4472c4" %)** AT+DATAUP=0**
1009
1010 (% style="color:#4472c4" %)** AT+DATAUP=1**
1011
1012
1013 )))
1014
1015 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1016
1017 Each uplink is sent to the server at 20-second intervals when segmented.
1018
1019
1020 * (((
1021 (% style="color:#037691" %)** Downlink Payload:**
1022 )))
1023
1024 (% style="color:#4472c4" %)** 0xAD 00** (%%) **~-~->** Same as AT+DATAUP=0
1025
1026 (% 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.
1027
1028
1029 (Since firmware v1.4.0)
1030
1031 * (((
1032 (% style="color:#037691" %)** AT Command:**
1033 )))
1034
1035 (% style="color:#4472c4" %)** AT+DATAUP=1,Timeout**
1036
1037
1038 * (((
1039 (% style="color:#037691" %)** Downlink Payload:**
1040 )))
1041
1042 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1043
1044 Each uplink is sent to the server at 20-second intervals when segmented.
1045
1046
1047 ==== (% style="color:blue" %)**Cut data separation processing(Since Version 1.4.2)**(%%) ====
1048
1049
1050 AT+NEWLINE command, which only takes effect when AT+DATAUP=1 or AT+DATAUP=1, timeout.
1051
1052 When not set, each part of AT+DATAUP is sent according to the maximum number of bytes of DR.
1053
1054 When setting, each part of AT+DATAUP is sent according to the value set by AT+NEWLINE.
1055
1056
1057 * (((
1058 (% style="color:#037691" %)** AT Command:**
1059 )))
1060
1061 (% style="color:#4472c4" %)//**AT+NEWLINE=ALL**//(%%)//   //The data cut out by each AT+COMMANDx command is sent separately as an uplink.
1062
1063 (% 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**//
1064
1065
1066 (% 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.
1067
1068
1069 (% style="color:#4472c4" %)//**AT+NEWLINE=NULL**//(%%)//  //Turn off the functionality of this AT command.
1070
1071
1072 * (((
1073 (% style="color:#037691" %)** Downlink Payload:**
1074 )))
1075
1076 //AT+NEWLINE=ALL  ~-~-->  (% style="color:#4472c4" %)**0xAC 01**//
1077
1078 // AT+NEWLINE= NULL  ~-~-->  (% style="color:#4472c4" %)**0xAC 00**//
1079
1080 //AT+NEWLINE= a+b+c   ~-~-->  (% style="color:#4472c4" %)**0xAC number of bytes a b c**//
1081
1082 //AT+NEWLINE= 1+5+15 ~-~-->  (% style="color:#4472c4" %)**0xAC 03 01 05 0F**//
1083
1084
1085 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
1086
1087
1088 (((
1089 Ask device to send an uplink immediately.
1090 )))
1091
1092 * (((
1093 (% style="color:#037691" %)** AT Command:**
1094 )))
1095
1096 (((
1097 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
1098 )))
1099
1100 (((
1101
1102 )))
1103
1104 * (((
1105 (% style="color:#037691" %)** Downlink Payload:**
1106 )))
1107
1108 (((
1109 (% style="color:#4472c4" %)** 0x08 FF**(%%), RS485-LN will immediately send an uplink.
1110 )))
1111
1112
1113
1114 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
1115
1116
1117 (((
1118 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1119
1120
1121 )))
1122
1123 * (((
1124 (% style="color:#037691" %)** AT Command:**
1125 )))
1126
1127 (((
1128 (% style="color:#4472c4" %)** AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase
1129 )))
1130
1131 (((
1132
1133
1134 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1135 )))
1136
1137 (((
1138 Example screen shot after clear all RS485 commands. 
1139 )))
1140
1141 (((
1142
1143 )))
1144
1145 (((
1146 The uplink screen shot is:
1147 )))
1148
1149 (% 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" %)​
1150
1151
1152 * (((
1153 (% style="color:#037691" %)** Downlink Payload:**
1154 )))
1155
1156 (((
1157 (% style="color:#4472c4" %)** 0x09 aa bb** (%%) same as AT+CMDEAR=aa,bb
1158 )))
1159
1160
1161
1162 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1163
1164
1165 (((
1166 Set the Rs485 serial communication parameters:
1167 )))
1168
1169 (((
1170 (% style="color:#037691" %)**AT Command:**
1171 )))
1172
1173 (((
1174 * Set Baud Rate
1175 )))
1176
1177 (% 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
1178
1179
1180 (((
1181 * Set UART Parity
1182 )))
1183
1184 (% style="color:#4472c4" %)** AT+PARITY=0** (%%) ~/~/  Option: 0: no parity, 1: odd parity, 2: even parity
1185
1186
1187 (((
1188 * Set STOPBIT
1189 )))
1190
1191 (% style="color:#4472c4" %)** AT+STOPBIT=0** (%%) ~/~/  Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1192
1193
1194 (((
1195 (% style="color:#037691" %)**Downlink Payload:**
1196 )))
1197
1198 (((
1199 (% style="color:#4472c4" %)** A7 01 aa bb**:   (%%) Same  AT+BAUDR=hex(aa bb)*100
1200 )))
1201
1202 (((
1203 **Example:**
1204 )))
1205
1206 * (((
1207 A7 01 00 60  same as AT+BAUDR=9600
1208 )))
1209 * (((
1210 A7 01 04 80  same as AT+BAUDR=115200
1211 )))
1212
1213 (((
1214 * A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1215 )))
1216
1217 (((
1218 * A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1219 )))
1220
1221
1222
1223
1224 ==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.0)**(%%) ====
1225
1226
1227 * (((
1228 (% style="color:#037691" %)** AT Command:**
1229 )))
1230
1231 (% style="color:#4472c4" %)** AT+DATABIT=7    **(%%)~/~/ Set the data bits to 7
1232
1233 (% style="color:#4472c4" %)** AT+DATABIT=8    **(%%)~/~/ Set the data bits to 8
1234
1235 * (((
1236 (% style="color:#037691" %)**Downlink Payload:**
1237 )))
1238
1239 (% style="color:#4472c4" %)** A7 04 07**(%%): Same as  AT+DATABIT=7
1240
1241 (% style="color:#4472c4" %)** A7 04 08**(%%): Same as  AT+DATABIT=8
1242
1243
1244
1245 ==== (% style="color:blue" %)**Encrypted payload(Since Version 1.4.0)**(%%) ====
1246
1247 (((
1248
1249 )))
1250
1251 * (((
1252 (% style="color:#037691" %)** AT Command:**
1253 )))
1254
1255 (% style="color:#4472c4" %)** AT+DECRYPT=1  ** (%%) ~/~/ The payload is uploaded without encryption
1256
1257 (% style="color:#4472c4" %)** AT+DECRYPT=0  ** (%%) ~/~/ Encrypt when uploading payload (default)
1258
1259
1260
1261 ==== (% style="color:blue" %)**Get sensor value(Since Version 1.4.0)**(%%) ====
1262
1263
1264 * (((
1265 (% style="color:#037691" %)** AT Command:**
1266 )))
1267
1268 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=0  **(%%) ~/~/ The serial port gets the reading of the current sensor
1269
1270 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=1  **(%%) ~/~/ The serial port gets the current sensor reading and uploads it.
1271
1272
1273
1274 ==== (% style="color:blue" %)**Resets the downlink packet count(Since Version 1.4.0)**(%%) ====
1275
1276
1277 * (((
1278 (% style="color:#037691" %)** AT Command:**
1279 )))
1280
1281 (% 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)
1282
1283 (% 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.
1284
1285
1286
1287 ==== (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches(Since Version 1.4.0)**(%%) ====
1288
1289
1290 * (((
1291 (% style="color:#037691" %)** AT Command:**
1292 )))
1293
1294 (% 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)
1295
1296 (% 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.
1297
1298
1299 * (((
1300 (% style="color:#037691" %)** Downlink Payload:**
1301 )))
1302
1303 (% style="color:#4472c4" %)** 0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1304
1305
1306
1307 ==== (% style="color:blue" %)**Copy downlink to uplink (Since Version 1.4.0)**(%%) ====
1308
1309
1310 * (((
1311 (% style="color:#037691" %)** AT Command:**
1312 )))
1313
1314 (% 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.
1315
1316 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.
1317
1318
1319 [[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"]]
1320
1321 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1322
1323
1324
1325 [[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"]]
1326
1327 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1328
1329
1330
1331 ==== (% style="color:blue" %)**Query version number and frequency band 、TDC(Since Version 1.4.0)**(%%) ====
1332
1333
1334 (((
1335 * (% style="color:#037691" %)**Downlink Payload:**
1336
1337 (% style="color:#4472c4" %)** 26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1338 )))
1339
1340
1341 Example：
1342
1343
1344 [[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"]]
1345
1346
1347
1348 ==== (% style="color:blue" %)** Monitor RS485 communication of other devices(Since Version 1.4.0)**(%%) ====
1349
1350
1351 * (((
1352 (% style="color:#037691" %)** AT Command:**
1353 )))
1354
1355 (% 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.
1356
1357 (% 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.
1358
1359 (% style="color:#4472c4" %)**AT+RXMODE=0,0  ** (%%) ~/~/  Disable this mode (default)
1360
1361
1362 * (((
1363 (% style="color:#037691" %)**Downlink Payload:**
1364 )))
1365
1366 (% style="color:#4472c4" %)** A6 aa bb bb               ** (%%) ~/~/ same as AT+RXMODE=aa,bb
1367
1368 [[image:image-20220824144240-1.png]]
1369
1370
1371 == 3.6 Listening mode for RS485 network ==
1372
1373
1374 (((
1375 This feature support since firmware v1.4
1376 )))
1377
1378 (((
1379 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.
1380
1381
1382 )))
1383
1384 (% 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"]]
1385
1386 (% title="Click and drag to resize" %)​
1387
1388 (((
1389 To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
1390 )))
1391
1392
1393
1394 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
1395 |=(% style="width: 156px; background-color:#D9E2F3;color:#0070C0" %)(((
1396 **Command example**
1397 )))|=(% style="width: 355px; background-color:#D9E2F3;color:#0070C0" %)(((
1398 **Function**
1399 )))
1400 |(% style="width:156px" %)(((
1401 AT+RXMODE=1,10
1402 )))|(% style="width:352px" %)(((
1403 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.
1404 )))
1405 |(% style="width:156px" %)(((
1406 AT+RXMODE=2,500
1407 )))|(% style="width:352px" %)(((
1408 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
1409 )))
1410 |(% style="width:156px" %)(((
1411 AT+RXMODE=0,0
1412 )))|(% style="width:352px" %)(((
1413 Disable listening mode. This is the default settings.
1414 )))
1415 |(% style="width:156px" %)(((
1416
1417 )))|(% style="width:352px" %)(((
1418 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1419 )))
1420
1421 (((
1422
1423
1424 (% style="color:#037691" %)**Downlink Command:**
1425 )))
1426
1427 (((
1428 (% style="color:#4472c4" %)** 0xA6 aa bb cc **(%%) same as AT+RXMODE=aa,(bb<<8 | cc)
1429 )))
1430
1431 (((
1432
1433 )))
1434
1435 (((
1436 **Example**:
1437 )))
1438
1439 (((
1440 The RS485-LN is set to AT+RXMODE=2,1000
1441 )))
1442
1443 (((
1444 There is a two Modbus commands in the RS485 network as below:
1445 )))
1446
1447 (((
1448 The Modbus master send a command: (% style="background-color:#ffc000" %)**01 03 00 00 00 02 c4 0b**
1449 )))
1450
1451 (((
1452 And Modbus slave reply with: (% style="background-color:green" %)**01 03 04 00 00 00 00 fa 33**
1453 )))
1454
1455 (((
1456 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**
1457
1458
1459 )))
1460
1461 (((
1462 (% 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" %)​
1463 )))
1464
1465
1466
1467 (((
1468 (% 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.**
1469 )))
1470
1471
1472 == 3.7 Buttons ==
1473
1474
1475 (% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
1476 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**Button**|=(% style="width: 380px;background-color:#D9E2F3;color:#0070C0" %)**Feature**
1477 |(% 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**
1478 |(% style="width:50px" %)RST|(% style="width:361px" %)Reboot RS485
1479 |(% style="width:50px" %)PRO|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1480
1481 == 3.8 LEDs ==
1482
1483
1484 (% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
1485 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**LEDs**|=(% style="width: 380px;background-color:#D9E2F3;color:#0070C0" %)**Feature**
1486 |PWR|Always on if there is power
1487 |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.
1488
1489 = 4. Case Study =
1490
1491
1492 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]]
1493
1494
1495 = 5. Use AT Command =
1496
1497 == 5.1 Access AT Command ==
1498
1499
1500 (((
1501 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.
1502
1503
1504 )))
1505
1506 (% 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" %)​
1507
1508
1509
1510 (((
1511 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:
1512
1513
1514 )))
1515
1516 (% 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" %)​
1517
1518
1519 (((
1520 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/]]
1521 )))
1522
1523
1524 == 5.2 Common AT Command Sequence ==
1525
1526 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1527
1528
1529 If device has not joined network yet:
1530
1531 * (% style="color:#037691" %)**AT+FDR**
1532 * (% style="color:#037691" %)**AT+NJM=0**
1533 * (% style="color:#037691" %)**ATZ**
1534
1535 (((
1536
1537
1538 If device already joined network:
1539
1540 * (% style="color:#037691" %)**AT+NJM=0**
1541 * (% style="color:#037691" %)**ATZ**
1542 )))
1543
1544
1545
1546 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1547
1548
1549 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1550
1551 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1552
1553 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1554
1555 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1556
1557 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1558
1559 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1560
1561 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1562
1563 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1564
1565 (% 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.
1566
1567 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1568
1569
1570 (% style="color:red" %)**Note:**
1571
1572 (((
1573 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1574 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1575 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.
1576 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
1577
1578
1579 )))
1580
1581 (% 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" %)​
1582
1583
1584 = 6. FAQ =
1585
1586 == 6.1 How to upgrade the image? ==
1587
1588
1589 (((
1590 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1591 )))
1592
1593 * (((
1594 Support new features
1595 )))
1596 * (((
1597 For bug fix
1598 )))
1599 * (((
1600 Change LoRaWAN bands.
1601 )))
1602
1603 (((
1604 Below shows the hardware connection for how to upload an image to RS485-LN:
1605 )))
1606
1607 (% 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"]]
1608
1609 (% title="Click and drag to resize" %)​
1610
1611 (((
1612 (% 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]].
1613
1614
1615 )))
1616
1617 (((
1618 (% 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]].
1619
1620
1621 )))
1622
1623 (((
1624 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1625
1626
1627 )))
1628
1629 (((
1630 (((
1631 (((
1632 (% 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.
1633 )))
1634 )))
1635 )))
1636
1637
1638 (% 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" %)​
1639
1640
1641 (% 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" %)​
1642
1643
1644 (% 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" %)​
1645
1646
1647
1648 (% 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):**
1649
1650 [[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]]
1651
1652
1653
1654 (% 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:**
1655
1656 (% 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" %)​
1657
1658
1659 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1660
1661
1662 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1663
1664
1665 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1666
1667
1668 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"]].
1669
1670
1671 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1672
1673
1674 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1675
1676 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1677
1678
1679 == 6.5 Can i use point to point communication for RS485-LN? ==
1680
1681
1682 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]].
1683
1684
1685 == 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1686
1687
1688 [[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/]]
1689
1690
1691 == 6.7 How to judge whether there is a problem with the set COMMAND ==
1692
1693 === 6.7.1 Introduce: ===
1694
1695
1696 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:
1697
1698 1. Test if Modbus-MTU works with PC commands.
1699 1. Check if RS485-LN sent the expected command to Mobus-MTU
1700 1. Check if Modbus-MTU return back the expected result to RS485-LN.
1701 1. If both b) and c) has issue, we can compare PC’s output and RS485-LN output.
1702
1703 [[image:image-20221130104310-1.png||height="380" width="680"]]
1704
1705
1706 Example Connection:
1707
1708 [[image:image-20221130104310-2.png]]
1709
1710
1711 === 6.7.2 Set up PC to monitor RS485 network With Serial tool ===
1712
1713
1714 (% style="color:red" %)**Note: Receive and send set to hex mode**
1715
1716 [[image:image-20221130104310-3.png||height="616" width="714"]]
1717
1718
1719 === 6.7.3 With ModRSsim2: ===
1720
1721
1722 (% style="color:blue" %)**(1) Select serial port MODBUS RS-232**
1723
1724 [[image:image-20221130104310-4.png||height="390" width="865"]]
1725
1726
1727 (% style="color:blue" %)**(2) Click the serial port icon**
1728
1729 [[image:image-20221130104310-5.png||height="392" width="870"]]
1730
1731
1732 (% style="color:blue" %)**(3) After selecting the correct serial port and baud rate, click ok**
1733
1734 [[image:image-20221130104310-6.png]]
1735
1736
1737 (% style="color:blue" %)**(4) Click the comms.**
1738
1739 [[image:image-20221130104310-7.png||height="376" width="835"]]
1740
1741 (% class="wikigeneratedid" id="HRunRS485-LN2FBLcommandandmonitorifitiscorrect." %)
1742 **Run RS485-LN/BL command and monitor if it is correct.**
1743
1744
1745 === 6.7.4 Example – Test the CFGDEV command ===
1746
1747
1748 RS485-LN sent below command:
1749
1750 (% 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.
1751
1752
1753 We can see the output from the Serial port tool to analyze. And check if they are expected result.
1754
1755 [[image:image-20221130104310-8.png||height="214" width="797"]]
1756
1757
1758 We can also use (% style="color:blue" %)**ModRSsim2**(%%) to see the output.
1759
1760 [[image:image-20221130104310-9.png||height="531" width="729"]]
1761
1762
1763 === 6.7.5 Example – Test CMD command sets. ===
1764
1765
1766 Run (% style="color:blue" %)**AT+SENSORVALUE=1**(%%) to test the CMD commands set in RS485-LN.
1767
1768
1769 (% style="color:blue" %)**Serial port tool:**
1770
1771 [[image:image-20221130104310-10.png||height="339" width="844"]]
1772
1773
1774 (% style="color:blue" %)**ModRSsim2:**
1775
1776 [[image:image-20221130104310-11.png||height="281" width="962"]]
1777
1778
1779 === 6.7.6 Test with PC ===
1780
1781
1782 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.
1783
1784
1785 Or User can send the working commands set in PC serial tool to Dragino Support to check what should be configured in RS485-LN.
1786
1787 (% style="color:blue" %)**Connection method：**
1788
1789 [[image:image-20221130104310-12.png]]
1790
1791
1792 (% style="color:blue" %)**Link situation:**
1793
1794 [[image:image-20221130104310-13.png||height="458" width="486"]]
1795
1796
1797 [[image:image-20221130104310-14.png||height="371" width="823"]]
1798
1799
1800 == 6.8 Where to get the decoder for RS485-LN? ==
1801
1802
1803 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)
1804
1805
1806 == 6.9 How to configure RS485 commands more conveniently？ ==
1807
1808
1809 Dragino has developed an application for the RS485 series of products.
1810
1811 It can help you configure RS485 sensors more conveniently
1812 Please refer to the link below for specific usage：
1813
1814 [[RS485 Configure Tool - DRAGINO>>url:http://wiki.dragino.com/xwiki/bin/view/Main/RS485_Configure_Tool/#HTableofContentsFF1A]]
1815
1816
1817
1818 = 7. Trouble Shooting =
1819
1820 == 7.1 Downlink doesn't work, how to solve it? ==
1821
1822
1823 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1824
1825
1826 == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1827
1828
1829 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1830
1831
1832 = 8. Order Info =
1833
1834
1835 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1836
1837 (% style="color:blue" %)**XXX:**
1838
1839 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1840 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1841 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1842 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1843 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1844 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1845 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1846 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1847 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1848 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1849
1850 = 9. Packing Info =
1851
1852
1853 **Package Includes**:
1854
1855 * RS485-LN x 1
1856 * Stick Antenna for LoRa RF part x 1
1857 * Program cable x 1
1858
1859 **Dimension and weight**:
1860
1861 * Device Size: 13.5 x 7 x 3 cm
1862 * Device Weight: 105g
1863 * Package Size / pcs : 14.5 x 8 x 5 cm
1864 * Weight / pcs : 170g
1865
1866 = 10. FCC Caution for RS485LN-US915 =
1867
1868
1869 (((
1870 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1871 )))
1872
1873 (((
1874 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.
1875 )))
1876
1877 (((
1878
1879 )))
1880
1881 (((
1882 (% style="color:red" %)**IMPORTANT NOTE:**
1883 )))
1884
1885 (((
1886 (% 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:
1887 )))
1888
1889 (((
1890 —Reorient or relocate the receiving antenna.
1891 )))
1892
1893 (((
1894 —Increase the separation between the equipment and receiver.
1895 )))
1896
1897 (((
1898 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1899 )))
1900
1901 (((
1902 —Consult the dealer or an experienced radio/TV technician for help.
1903 )))
1904
1905 (((
1906
1907 )))
1908
1909 (((
1910 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1911 )))
1912
1913 (((
1914 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.
1915 )))
1916
1917
1918 = 11. Support =
1919
1920
1921 * (((
1922 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.
1923 )))
1924 * (((
1925 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]].
1926
1927
1928
1929 )))

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