Version 103.1 by Xiaoling on 2023/04/25 17:54
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15 **Table of Contents:**
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17 {{toc/}}
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22 (% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
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31 = 1. Introduction =
32
33 == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
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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, smartphone detection, 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" %)​
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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
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97
98
99 == 1.3 Features ==
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101
102 * LoRaWAN Class A & Class C protocol (default Class C)
103 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864/MA869
104 * AT Commands to change parameters
105 * Remote configure parameters via LoRa Downlink
106 * Firmware upgradable via program port
107 * Support multiply RS485 devices by flexible rules
108 * Support Modbus protocol
109 * Support Interrupt uplink (Since hardware version v1.2)
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111
112
113 == 1.4 Applications ==
114
115
116 * Smart Buildings & Home Automation
117 * Logistics and Supply Chain Management
118 * Smart Metering
119 * Smart Agriculture
120 * Smart Cities
121 * Smart Factory
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124
125 == 1.5 Firmware Change log ==
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128 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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130
131 == 1.6 Hardware Change log ==
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137 v1.2: Add External Interrupt Pin.
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141 v1.0: Release
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147
148 = 2. Power ON Device =
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152 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
153
154 * Power Source VIN to RS485-LN VIN+
155 * Power Source GND to RS485-LN VIN-
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158 Once there is power, the RS485-LN will be on.
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165
166 = 3. Operation Mode =
167
168 == 3.1 How it works? ==
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173 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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178
179 == 3.2 Example to join LoRaWAN network ==
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182 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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190 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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194 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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203 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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209 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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213 Each RS485-LN is shipped with a sticker with unique device EUI:
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222 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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228 **Add APP EUI in the application.**
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236 (% aria-label="image-20220519174512-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-3.png||data-widget="image" height="556" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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241 (% title="Click and drag to resize" %)​
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243 You can also choose to create the device manually.
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245 (% aria-label="1652953542269-423.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953542269-423.png||data-widget="image" height="710" width="723"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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249 **Add APP KEY and DEV EUI**
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251 (% aria-label="1652953553383-907.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953553383-907.png||data-widget="image" height="514" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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256 (% style="color:blue" %)**Step 2**(%%): Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
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261 (% aria-label="1652953568895-172.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953568895-172.png||data-widget="image" height="232" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
262
263
264 == 3.3 Configure Commands to read data ==
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266
267 (((
268 (((
269 (((
270 There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>||anchor="H3.5ConfigureRS485-LNviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
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278 (% style="color:red" %)**Note: below description and commands are for firmware version >v1.1, if you have firmware version v1.0. Please check the [[user manual v1.0>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/&file=RS485-LN_UserManual_v1.0.1.pdf]] or upgrade the firmware to v1.1**
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284
285 === 3.3.1 Configure UART settings for RS485 or TTL communication ===
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288 To use RS485-LN to read data from RS485 sensors, connect the RS485-LN A/B traces to the sensors. And user need to make sure RS485-LN use the match UART setting to access the sensors. The related commands for UART settings are:
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290 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
291 |=(% style="width: 126px; background-color:#D9E2F3;color:#0070C0" %)(((
292 **AT Commands**
293 )))|=(% style="width: 187px; background-color:#D9E2F3;color:#0070C0" %)(((
294 **Description**
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296 **Example**
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298 |(% style="width:126px" %)(((
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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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308 AT+BAUDR=9600
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311 (((
312 Options: (1200,2400,4800,
313 14400,19200,115200)
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317 AT+PARITY
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319 Set UART parity (for RS485 connection)
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322 AT+PARITY=0
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326 Option: 0: no parity,
327 1: odd parity,
328 2: even parity
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331 |(% style="width:126px" %)(((
332 AT+STOPBIT
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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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347 AT+STOPBIT=2 for 2 bits
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351
352
353 === 3.3.2 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
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376
377
378 === 3.3.3 Configure read commands for each sampling ===
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380
381 (((
382 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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384 To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
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386 This section describes how to achieve above goals.
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388 During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
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390
391 (% style="color:#037691" %)**Each RS485 commands include two parts:**
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393
394 ~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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396 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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398 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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401 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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403 Below are examples for the how above AT Commands works.
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405
406 (% 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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408 (% border="1" style="background-color:#f2f2f2; width:499px" %)
409 |(% style="width:496px" %)(((
410 **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
411
412 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
413
414 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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416
417 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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419 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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421
422 (% 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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424 (% border="1" style="background-color:#f2f2f2; width:510px" %)
425 |(% style="width:510px" %)(((
426 **AT+DATACUTx=a,b,c**
427
428 * **a: length for the return of AT+COMMAND**
429 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
430 * **c: define the position for valid value.  **
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432
433 **Examples:**
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435
436 * (% style="color:#037691" %)**Grab bytes**
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438 (% aria-label="image-20220602153621-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-1.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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441
442 * (% style="color:#037691" %)**Grab a section**
443
444 (% 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" %)​
445
446
447
448 * (% style="color:#037691" %)**Grab different sections**
449
450 (% 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" %)​
451
452
453 )))
454
455 === 3.3.4 Compose the uplink payload ===
456
457
458 (((
459 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.**
460
461
462 )))
463
464 (((
465 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
466
467
468 )))
469
470 (((
471 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
472 )))
473
474 (((
475 Final Payload is (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
476 )))
477
478 (((
479 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
480
481
482 )))
483
484 [[image:image-20220929111027-1.png||height="509" width="685"]](% title="Click and drag to resize" %)​
485
486
487 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
488
489
490 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
491
492 Final Payload is (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
493
494
495 ~1. PAYVER: Defined by AT+PAYVER
496
497 2. PAYLOAD COUNT: Total how many uplinks of this sampling.
498
499 3. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
500
501 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
502
503
504 (% 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" %)​
505
506
507 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
508
509 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
510
511 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
512
513 DATA3=the rest of Valid value of RETURN10= **30**
514
515
516 (% 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:**
517
518
519 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
520
521 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
522
523 * For US915 band, max 11 bytes for each uplink.
524
525 ~* For all other bands: max 51 bytes for each uplink.
526
527
528 (% style="color:red" %)** When AT+DATAUP=1, the maximum number of segments is 15, and the maximum total number of bytes is 1500;**
529
530 (% 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)**
531
532
533
534 Below are the uplink payloads:
535
536
537 (% aria-label="1654157178836-407.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157178836-407.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
538
539
540 === 3.3.5 Uplink on demand ===
541
542
543 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.
544
545 (% style="color:blue" %)**Downlink control command:**
546
547 (% style="color:#4472c4" %)** 0x08 command**(%%): Poll an uplink with current command set in RS485-LN.
548
549 (% style="color:#4472c4" %)** 0xA8 command**(%%): Send a command to RS485-LN and uplink the output from sensors.
550
551
552 === 3.3.6 Uplink on Interrupt ===
553
554
555 RS485-LN support external Interrupt uplink since hardware v1.2 release.
556
557
558 (% 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" %)​
559
560 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.
561
562
563 == 3.4 Uplink Payload ==
564
565
566 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
567 |=(% scope="row" style="width: 70px;background-color:#D9E2F3;color:#0070C0" %)(((
568 Size(bytes)
569 )))|(% style="background-color:#d9e2f3; color:#0070c0; width:80px" %)**1**|(% style="background-color:#d9e2f3; color:#0070c0; width:360px" %)(((
570 **Length depends on the return from the commands**
571 )))
572 |=(% style="width: 90px;" %)(((
573 Value
574 )))|(% style="width:114px" %)(((
575 PAYLOAD_VER
576 )))|(% style="width:353px" %)(((
577 If the valid payload is too long and exceed the maximum
578
579 support payload length in server, server will show payload not
580
581 provided in the LoRaWAN server.
582 )))
583
584 (% 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"]]
585
586 (% title="Click and drag to resize" %)​
587
588 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
589
590
591 == 3.5 Configure RS485-LN via AT or Downlink ==
592
593
594 (((
595 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
596 )))
597
598 (((
599 There are two kinds of Commands:
600 )))
601
602 * (((
603 (% 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]]
604 )))
605
606 * (((
607 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
608 )))
609
610 (((
611
612 )))
613
614
615 === 3.5.1 Common Commands ===
616
617
618 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]]
619
620
621 === 3.5.2 Downlink Response(Since firmware v1.4) ===
622
623
624 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.
625
626
627 (% 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"]]
628
629 (% title="Click and drag to resize" %)​
630
631 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)
632
633
634 === 3.5.3 Sensor related commands ===
635
636
637
638 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
639
640
641 (((
642 This command is used to configure the RS485 devices; they won't be used during sampling. Max Length of AT+CFGDEV is **40 bytes**.
643 )))
644
645 (((
646 * (% style="color:#037691" %)**AT Command**
647
648 (((
649 (% 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
650 )))
651 )))
652
653 (((
654
655 )))
656
657 * (((
658 (% style="color:#037691" %)**Downlink Payload**
659 )))
660
661 (((
662 Format: (% style="color:#4472c4" %)** A8 MM NN XX XX XX XX YY**
663 )))
664
665 (((
666 Where:
667 )))
668
669 * (((
670 MM: 1: add CRC-16/MODBUS ; 0: no CRC
671 )))
672 * (((
673 NN: The length of RS485 command
674 )))
675 * (((
676 XX XX XX XX: RS485 command total NN bytes
677 )))
678 * (((
679 (((
680 YY: How many bytes will be uplink from the return of this RS485 command,
681 )))
682
683 * (((
684 if YY=0, RS485-LN will execute the downlink command without uplink;
685 )))
686 * (((
687 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
688 )))
689 * (((
690 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
691 )))
692 )))
693
694 (((
695
696
697 (% style="color:blue" %)**Example 1:**  (%%) ~-~-> Configure without ask for uplink (YY=0)
698 )))
699
700 (((
701 To connect a Modbus Alarm with below commands.
702 )))
703
704 * (((
705 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.
706 )))
707
708 * (((
709 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.
710 )))
711
712 (((
713
714
715 So if user want to use downlink command to control to RS485 Alarm, he can use:
716 )))
717
718 (((
719 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
720 )))
721
722 (((
723 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
724 )))
725
726 (((
727 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.
728 )))
729
730 (((
731
732 )))
733
734 (((
735 (% style="color:blue" %)**Example 2:**  (%%) ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
736 )))
737
738 (((
739 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
740 )))
741
742 (((
743
744 )))
745
746 (((
747 (((
748 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**
749 )))
750
751
752 )))
753
754 (((
755 (% 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" %)​
756 )))
757
758
759
760 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
761
762
763 (((
764 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.
765 )))
766
767 (((
768 * (% style="color:#037691" %)**AT Command:**
769
770 (% style="color:#4472c4" %)** AT+PAYVER:    ** (%%) Set PAYVER field = 1
771
772
773 )))
774
775 * (((
776 (% style="color:#037691" %)**Downlink Payload:**
777 )))
778
779 (((
780 (% style="color:#4472c4" %)** 0xAE 01** (%%) ~-~->  Set PAYVER field =  0x01
781 )))
782
783 (((
784 (% style="color:#4472c4" %)** 0xAE 0F**   (%%) ~-~->  Set PAYVER field =  0x0F
785 )))
786
787
788 **1 )  Add the interrupt flag at the highest bit of the Payver byte, that is, Byte7 of the first byte. (Since v1.4.0)**
789
790
791 [[image:image-20220824145428-2.png||height="168" width="1300"]]
792
793
794
795 **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.**
796
797
798 [[image:image-20220824145428-3.png||height="308" width="1200"]]
799
800
801
802 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
803
804
805 (((
806 AT+COMMANDx or AT+DATACUTx
807 )))
808
809 (((
810 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"]].
811 )))
812
813 (((
814
815 )))
816
817 * (((
818 (% style="color:#037691" %)**AT Command:**
819 )))
820
821 (% style="color:#4472c4" %)** AT+COMMANDx:    ** (%%) Configure RS485 read command to sensor.
822
823 (% style="color:#4472c4" %)** AT+DATACUTx:        **(%%) Configure how to handle return from RS485 devices.
824
825
826 * (((
827 (% style="color:#037691" %)**Downlink Payload:**
828 )))
829
830 (((
831 (% style="color:#4472c4" %)** 0xAF**(%%) downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
832
833
834 )))
835
836 (((
837 (% style="color:red" %)**Note : if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
838
839
840 )))
841
842 (((
843 Format: (% style="color:#4472c4" %)** AF MM NN LL XX XX XX XX YY**
844 )))
845
846 (((
847 Where:
848 )))
849
850 * (((
851 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
852 )))
853 * (((
854 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
855 )))
856 * (((
857 LL:  The length of AT+COMMAND or AT+DATACUT command
858 )))
859 * (((
860 XX XX XX XX: AT+COMMAND or AT+DATACUT command
861 )))
862 * (((
863 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.
864 )))
865
866 (((
867
868
869 **Example:**
870 )))
871
872 (((
873 (% 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
874 )))
875
876 (((
877 (% 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**
878 )))
879
880 (((
881 (% 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**
882 )))
883
884
885
886 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
887
888
889 (((
890 (% 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]].
891 )))
892
893 (((
894 This command is valid since v1.3 firmware version
895 )))
896
897 (((
898 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.
899 )))
900
901 (((
902
903 )))
904
905 (((
906 **Example:**
907 )))
908
909 * (((
910 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
911 )))
912 * (((
913 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.
914 )))
915 * (((
916 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.
917
918
919 )))
920
921 (% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]]
922
923 (% title="Click and drag to resize" %)​
924
925 (% 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" %)​
926
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 * (((
1018 (% style="color:#037691" %)** AT Command:**
1019 )))
1020
1021 (% style="color:#4472c4" %)** AT+DATAUP=1,Timeout**
1022
1023
1024 * (((
1025 (% style="color:#037691" %)** Downlink Payload:**
1026 )))
1027
1028 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1029
1030 Each uplink is sent to the server at 20-second intervals when segmented.
1031
1032
1033
1034 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
1035
1036
1037 (((
1038 Ask device to send an uplink immediately.
1039 )))
1040
1041 * (((
1042 (% style="color:#037691" %)** AT Command:**
1043 )))
1044
1045 (((
1046 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
1047 )))
1048
1049 (((
1050
1051 )))
1052
1053 * (((
1054 (% style="color:#037691" %)** Downlink Payload:**
1055 )))
1056
1057 (((
1058 (% style="color:#4472c4" %)** 0x08 FF**(%%), RS485-LN will immediately send an uplink.
1059 )))
1060
1061
1062
1063 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
1064
1065
1066 (((
1067 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1068
1069
1070 )))
1071
1072 * (((
1073 (% style="color:#037691" %)** AT Command:**
1074 )))
1075
1076 (((
1077 (% style="color:#4472c4" %)** AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase
1078 )))
1079
1080 (((
1081
1082
1083 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1084 )))
1085
1086 (((
1087 Example screen shot after clear all RS485 commands. 
1088 )))
1089
1090 (((
1091
1092 )))
1093
1094 (((
1095 The uplink screen shot is:
1096 )))
1097
1098 (% 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" %)​
1099
1100
1101 * (((
1102 (% style="color:#037691" %)** Downlink Payload:**
1103 )))
1104
1105 (((
1106 (% style="color:#4472c4" %)** 0x09 aa bb** (%%) same as AT+CMDEAR=aa,bb
1107 )))
1108
1109
1110
1111 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1112
1113
1114 (((
1115 Set the Rs485 serial communication parameters:
1116 )))
1117
1118 (((
1119 (% style="color:#037691" %)**AT Command:**
1120 )))
1121
1122 (((
1123 * Set Baud Rate
1124 )))
1125
1126 (% 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
1127
1128
1129 (((
1130 * Set UART Parity
1131 )))
1132
1133 (% style="color:#4472c4" %)** AT+PARITY=0** (%%) ~/~/  Option: 0: no parity, 1: odd parity, 2: even parity
1134
1135
1136 (((
1137 * Set STOPBIT
1138 )))
1139
1140 (% style="color:#4472c4" %)** AT+STOPBIT=0** (%%) ~/~/  Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1141
1142
1143 (((
1144 (% style="color:#037691" %)**Downlink Payload:**
1145 )))
1146
1147 (((
1148 (% style="color:#4472c4" %)** A7 01 aa bb**:   (%%) Same  AT+BAUDR=hex(aa bb)*100
1149 )))
1150
1151 (((
1152 **Example:**
1153 )))
1154
1155 * (((
1156 A7 01 00 60  same as AT+BAUDR=9600
1157 )))
1158 * (((
1159 A7 01 04 80  same as AT+BAUDR=115200
1160 )))
1161
1162 (((
1163 * A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1164 )))
1165
1166 (((
1167 * A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1168 )))
1169
1170
1171
1172
1173 ==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.0)**(%%) ====
1174
1175
1176 * (((
1177 (% style="color:#037691" %)** AT Command:**
1178 )))
1179
1180 (% style="color:#4472c4" %)** AT+DATABIT=7    **(%%)~/~/ Set the data bits to 7
1181
1182 (% style="color:#4472c4" %)** AT+DATABIT=8    **(%%)~/~/ Set the data bits to 8
1183
1184 * (((
1185 (% style="color:#037691" %)**Downlink Payload:**
1186 )))
1187
1188 (% style="color:#4472c4" %)** A7 04 07**(%%): Same as  AT+DATABIT=7
1189
1190 (% style="color:#4472c4" %)** A7 04 08**(%%): Same as  AT+DATABIT=8
1191
1192
1193
1194 ==== (% style="color:blue" %)**Encrypted payload(Since Version 1.4.0)**(%%) ====
1195
1196 (((
1197
1198 )))
1199
1200 * (((
1201 (% style="color:#037691" %)** AT Command:**
1202 )))
1203
1204 (% style="color:#4472c4" %)** AT+DECRYPT=1  ** (%%) ~/~/ The payload is uploaded without encryption
1205
1206 (% style="color:#4472c4" %)** AT+DECRYPT=0  ** (%%) ~/~/ Encrypt when uploading payload (default)
1207
1208
1209
1210 ==== (% style="color:blue" %)**Get sensor value(Since Version 1.4.0)**(%%) ====
1211
1212
1213 * (((
1214 (% style="color:#037691" %)** AT Command:**
1215 )))
1216
1217 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=0  **(%%) ~/~/ The serial port gets the reading of the current sensor
1218
1219 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=1  **(%%) ~/~/ The serial port gets the current sensor reading and uploads it.
1220
1221
1222
1223 ==== (% style="color:blue" %)**Resets the downlink packet count(Since Version 1.4.0)**(%%) ====
1224
1225
1226 * (((
1227 (% style="color:#037691" %)** AT Command:**
1228 )))
1229
1230 (% 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)
1231
1232 (% 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.
1233
1234
1235
1236 ==== (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches(Since Version 1.4.0)**(%%) ====
1237
1238
1239 * (((
1240 (% style="color:#037691" %)** AT Command:**
1241 )))
1242
1243 (% 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)
1244
1245 (% 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.
1246
1247
1248 * (((
1249 (% style="color:#037691" %)** Downlink Payload:**
1250 )))
1251
1252 (% style="color:#4472c4" %)** 0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1253
1254
1255
1256 ==== (% style="color:blue" %)**Copy downlink to uplink (Since Version 1.4.0)**(%%) ====
1257
1258
1259 * (((
1260 (% style="color:#037691" %)** AT Command:**
1261 )))
1262
1263 (% 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.
1264
1265 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.
1266
1267
1268 [[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"]]
1269
1270 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1271
1272
1273
1274 [[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"]]
1275
1276 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1277
1278
1279
1280 ==== (% style="color:blue" %)**Query version number and frequency band 、TDC(Since Version 1.4.0)**(%%) ====
1281
1282
1283 (((
1284 * (% style="color:#037691" %)**Downlink Payload:**
1285
1286 (% style="color:#4472c4" %)** 26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1287 )))
1288
1289
1290 Example：
1291
1292
1293 [[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"]]
1294
1295
1296
1297 ==== (% style="color:blue" %)** Monitor RS485 communication of other devices(Since Version 1.4.0)**(%%) ====
1298
1299
1300 * (((
1301 (% style="color:#037691" %)** AT Command:**
1302 )))
1303
1304 (% 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.
1305
1306 (% 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.
1307
1308 (% style="color:#4472c4" %)**AT+RXMODE=0,0  ** (%%) ~/~/  Disable this mode (default)
1309
1310
1311 * (((
1312 (% style="color:#037691" %)**Downlink Payload:**
1313 )))
1314
1315 (% style="color:#4472c4" %)** A6 aa bb bb               ** (%%) ~/~/ same as AT+RXMODE=aa,bb
1316
1317 [[image:image-20220824144240-1.png]]
1318
1319
1320 == 3.6 Listening mode for RS485 network ==
1321
1322
1323 (((
1324 This feature support since firmware v1.4
1325 )))
1326
1327 (((
1328 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.
1329
1330
1331 )))
1332
1333 (% 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"]]
1334
1335 (% title="Click and drag to resize" %)​
1336
1337 (((
1338 To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
1339 )))
1340
1341
1342
1343 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
1344 |=(% style="width: 156px; background-color:#D9E2F3;color:#0070C0" %)(((
1345 **Command example**
1346 )))|=(% style="width: 355px; background-color:#D9E2F3;color:#0070C0" %)(((
1347 **Function**
1348 )))
1349 |(% style="width:156px" %)(((
1350 AT+RXMODE=1,10
1351 )))|(% style="width:352px" %)(((
1352 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.
1353 )))
1354 |(% style="width:156px" %)(((
1355 AT+RXMODE=2,500
1356 )))|(% style="width:352px" %)(((
1357 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
1358 )))
1359 |(% style="width:156px" %)(((
1360 AT+RXMODE=0,0
1361 )))|(% style="width:352px" %)(((
1362 Disable listening mode. This is the default settings.
1363 )))
1364 |(% style="width:156px" %)(((
1365
1366 )))|(% style="width:352px" %)(((
1367 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1368 )))
1369
1370 (((
1371
1372
1373 (% style="color:#037691" %)**Downlink Command:**
1374 )))
1375
1376 (((
1377 (% style="color:#4472c4" %)** 0xA6 aa bb cc **(%%) same as AT+RXMODE=aa,(bb<<8 | cc)
1378 )))
1379
1380 (((
1381
1382 )))
1383
1384 (((
1385 **Example**:
1386 )))
1387
1388 (((
1389 The RS485-LN is set to AT+RXMODE=2,1000
1390 )))
1391
1392 (((
1393 There is a two Modbus commands in the RS485 network as below:
1394 )))
1395
1396 (((
1397 The Modbus master send a command: (% style="background-color:#ffc000" %)**01 03 00 00 00 02 c4 0b**
1398 )))
1399
1400 (((
1401 And Modbus slave reply with: (% style="background-color:green" %)**01 03 04 00 00 00 00 fa 33**
1402 )))
1403
1404 (((
1405 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**
1406
1407
1408 )))
1409
1410 (((
1411 (% 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" %)​
1412 )))
1413
1414
1415
1416 (((
1417 (% 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.**
1418 )))
1419
1420
1421 == 3.7 Buttons ==
1422
1423
1424 (% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
1425 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**Button**|=(% style="width: 380px;background-color:#D9E2F3;color:#0070C0" %)**Feature**
1426 |(% 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**
1427 |(% style="width:50px" %)RST|(% style="width:361px" %)Reboot RS485
1428 |(% style="width:50px" %)PRO|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1429
1430
1431
1432 == 3.8 LEDs ==
1433
1434
1435 (% border="1.5" cellspacing="4" style="background-color:#f2f2f2; width:430px" %)
1436 |=(% style="width: 50px;background-color:#D9E2F3;color:#0070C0" %)**LEDs**|=(% style="width: 380px;background-color:#D9E2F3;color:#0070C0" %)**Feature**
1437 |PWR|Always on if there is power
1438 |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.
1439
1440
1441
1442 = 4. Case Study =
1443
1444
1445 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]]
1446
1447
1448 = 5. Use AT Command =
1449
1450 == 5.1 Access AT Command ==
1451
1452
1453 (((
1454 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.
1455
1456
1457 )))
1458
1459 (% 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" %)​
1460
1461
1462
1463 (((
1464 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:
1465
1466
1467 )))
1468
1469 (% 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" %)​
1470
1471
1472 (((
1473 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/]]
1474 )))
1475
1476
1477 == 5.2 Common AT Command Sequence ==
1478
1479 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1480
1481
1482 If device has not joined network yet:
1483
1484 * (% style="color:#037691" %)**AT+FDR**
1485 * (% style="color:#037691" %)**AT+NJM=0**
1486 * (% style="color:#037691" %)**ATZ**
1487
1488 (((
1489
1490
1491 If device already joined network:
1492
1493 * (% style="color:#037691" %)**AT+NJM=0**
1494 * (% style="color:#037691" %)**ATZ**
1495 )))
1496
1497
1498
1499 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1500
1501
1502 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1503
1504 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1505
1506 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1507
1508 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1509
1510 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1511
1512 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1513
1514 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1515
1516 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1517
1518 (% 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.
1519
1520 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1521
1522
1523 (% style="color:red" %)**Note:**
1524
1525 (((
1526 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1527 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1528 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.
1529 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
1530
1531
1532 )))
1533
1534 (% 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" %)​
1535
1536
1537 = 6. FAQ =
1538
1539 == 6.1 How to upgrade the image? ==
1540
1541
1542 (((
1543 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1544 )))
1545
1546 * (((
1547 Support new features
1548 )))
1549 * (((
1550 For bug fix
1551 )))
1552 * (((
1553 Change LoRaWAN bands.
1554 )))
1555
1556 (((
1557 Below shows the hardware connection for how to upload an image to RS485-LN:
1558 )))
1559
1560 (% 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"]]
1561
1562 (% title="Click and drag to resize" %)​
1563
1564 (((
1565 (% 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]].
1566
1567
1568 )))
1569
1570 (((
1571 (% 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]].
1572
1573
1574 )))
1575
1576 (((
1577 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1578
1579
1580 )))
1581
1582 (((
1583 (((
1584 (((
1585 (% 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.
1586 )))
1587 )))
1588 )))
1589
1590
1591 (% 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" %)​
1592
1593
1594 (% 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" %)​
1595
1596
1597 (% 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" %)​
1598
1599
1600 (% 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:**
1601
1602 (% 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" %)​
1603
1604
1605 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1606
1607
1608 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1609
1610
1611 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1612
1613
1614 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"]].
1615
1616
1617 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1618
1619
1620 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1621
1622 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1623
1624
1625 == 6.5 Can i use point to point communication for RS485-LN? ==
1626
1627
1628 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]].
1629
1630
1631 == 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1632
1633
1634 [[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/]]
1635
1636
1637 == 6.7 How to judge whether there is a problem with the set COMMAND ==
1638
1639 === 6.7.1 Introduce: ===
1640
1641
1642 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:
1643
1644 1. Test if Modbus-MTU works with PC commands.
1645 1. Check if RS485-LN sent the expected command to Mobus-MTU
1646 1. Check if Modbus-MTU return back the expected result to RS485-LN.
1647 1. If both b) and c) has issue, we can compare PC’s output and RS485-LN output.
1648
1649 [[image:image-20221130104310-1.png||height="380" width="680"]]
1650
1651
1652 Example Connection:
1653
1654 [[image:image-20221130104310-2.png]]
1655
1656
1657 === 6.7.2 Set up PC to monitor RS485 network With Serial tool ===
1658
1659
1660 (% style="color:red" %)**Note: Receive and send set to hex mode**
1661
1662 [[image:image-20221130104310-3.png||height="616" width="714"]]
1663
1664
1665 === 6.7.3 With ModRSsim2: ===
1666
1667
1668 (% style="color:blue" %)**(1) Select serial port MODBUS RS-232**
1669
1670 [[image:image-20221130104310-4.png||height="390" width="865"]]
1671
1672
1673 (% style="color:blue" %)**(2) Click the serial port icon**
1674
1675 [[image:image-20221130104310-5.png||height="392" width="870"]]
1676
1677
1678 (% style="color:blue" %)**(3) After selecting the correct serial port and baud rate, click ok**
1679
1680 [[image:image-20221130104310-6.png]]
1681
1682
1683 (% style="color:blue" %)**(4) Click the comms.**
1684
1685 [[image:image-20221130104310-7.png||height="376" width="835"]]
1686
1687 (% class="wikigeneratedid" id="HRunRS485-LN2FBLcommandandmonitorifitiscorrect." %)
1688 **Run RS485-LN/BL command and monitor if it is correct.**
1689
1690
1691 === 6.7.4 Example – Test the CFGDEV command ===
1692
1693
1694 RS485-LN sent below command:
1695
1696 (% 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.
1697
1698
1699 We can see the output from the Serial port tool to analyze. And check if they are expected result.
1700
1701 [[image:image-20221130104310-8.png||height="214" width="797"]]
1702
1703
1704 We can also use (% style="color:blue" %)**ModRSsim2**(%%) to see the output.
1705
1706 [[image:image-20221130104310-9.png||height="531" width="729"]]
1707
1708
1709 === 6.7.5 Example – Test CMD command sets. ===
1710
1711
1712 Run (% style="color:blue" %)**AT+SENSORVALUE=1**(%%) to test the CMD commands set in RS485-LN.
1713
1714
1715 (% style="color:blue" %)**Serial port tool:**
1716
1717 [[image:image-20221130104310-10.png||height="339" width="844"]]
1718
1719
1720 (% style="color:blue" %)**ModRSsim2:**
1721
1722 [[image:image-20221130104310-11.png||height="281" width="962"]]
1723
1724
1725 === 6.7.6 Test with PC ===
1726
1727
1728 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.
1729
1730
1731 Or User can send the working commands set in PC serial tool to Dragino Support to check what should be configured in RS485-LN.
1732
1733 (% style="color:blue" %)**Connection method：**
1734
1735 [[image:image-20221130104310-12.png]]
1736
1737
1738 (% style="color:blue" %)**Link situation:**
1739
1740 [[image:image-20221130104310-13.png||height="458" width="486"]]
1741
1742
1743 [[image:image-20221130104310-14.png||height="371" width="823"]]
1744
1745
1746 == 6.8 Where to get the decoder for RS485-LN? ==
1747
1748
1749 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)
1750
1751
1752 = 7. Trouble Shooting =
1753
1754 == 7.1 Downlink doesn't work, how to solve it? ==
1755
1756
1757 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1758
1759
1760 == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1761
1762
1763 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1764
1765
1766 = 8. Order Info =
1767
1768
1769 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1770
1771 (% style="color:blue" %)**XXX:**
1772
1773 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1774 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1775 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1776 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1777 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1778 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1779 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1780 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1781 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1782 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1783
1784
1785
1786 = 9. Packing Info =
1787
1788
1789 **Package Includes**:
1790
1791 * RS485-LN x 1
1792 * Stick Antenna for LoRa RF part x 1
1793 * Program cable x 1
1794
1795 **Dimension and weight**:
1796
1797 * Device Size: 13.5 x 7 x 3 cm
1798 * Device Weight: 105g
1799 * Package Size / pcs : 14.5 x 8 x 5 cm
1800 * Weight / pcs : 170g
1801
1802
1803
1804 = 10. FCC Caution for RS485LN-US915 =
1805
1806
1807 (((
1808 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1809 )))
1810
1811 (((
1812 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.
1813 )))
1814
1815 (((
1816
1817 )))
1818
1819 (((
1820 (% style="color:red" %)**IMPORTANT NOTE:**
1821 )))
1822
1823 (((
1824 (% 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:
1825 )))
1826
1827 (((
1828 —Reorient or relocate the receiving antenna.
1829 )))
1830
1831 (((
1832 —Increase the separation between the equipment and receiver.
1833 )))
1834
1835 (((
1836 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1837 )))
1838
1839 (((
1840 —Consult the dealer or an experienced radio/TV technician for help.
1841 )))
1842
1843 (((
1844
1845 )))
1846
1847 (((
1848 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1849 )))
1850
1851 (((
1852 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.
1853 )))
1854
1855
1856 = 11. Support =
1857
1858
1859 * (((
1860 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.
1861 )))
1862 * (((
1863 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]].
1864
1865
1866
1867 )))

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