Version 101.2 by Xiaoling on 2023/04/18 10:24
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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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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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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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123
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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291 (% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
292 |=(% style="width: 110px;" %)(((
293 **AT Commands**
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295 **Description**
296 )))|=(% style="width: 190px;" %)(((
297 **Example**
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299 |(% style="width:110px" %)(((
300 AT+BAUDR
301 )))|(% style="width:190px" %)(((
302 Set the baud rate (for RS485 connection). Default Value is: 9600.
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304 (((
305 AT+BAUDR=9600
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309 Options: (1200,2400,4800,14400,19200,115200)
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312 |(% style="width:110px" %)(((
313 AT+PARITY
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315 Set UART parity (for RS485 connection)
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318 AT+PARITY=0
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322 Option: 0: no parity, 1: odd parity, 2: even parity
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325 |(% style="width:110px" %)(((
326 AT+STOPBIT
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329 Set serial stopbit (for RS485 connection)
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337 AT+STOPBIT=0 for 1bit
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341 AT+STOPBIT=1 for 1.5 bit
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345 AT+STOPBIT=2 for 2 bits
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349
350
351 === 3.3.2 Configure sensors ===
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354 (((
355 (((
356 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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362 (% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
363 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 210px;" %)**Description**|=(% style="width: 190px;" %)**Example**
364 |AT+CFGDEV|(% style="width:110px" %)(((
365 (((
366 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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369 (((
370 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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373 (((
374 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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376 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
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378
379
380 === 3.3.3 Configure read commands for each sampling ===
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382
383 (((
384 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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386 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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388 This section describes how to achieve above goals.
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390 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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393 (% style="color:#037691" %)**Each RS485 commands include two parts:**
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396 ~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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398 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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400 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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403 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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405 Below are examples for the how above AT Commands works.
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407
408 (% 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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410 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
411 |(% style="width:496px" %)(((
412 **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
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414 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
415
416 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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418
419 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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421 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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423
424 (% 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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426 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
427 |(% style="width:510px" %)(((
428 **AT+DATACUTx=a,b,c**
429
430 * **a: length for the return of AT+COMMAND**
431 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
432 * **c: define the position for valid value.  **
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434
435 **Examples:**
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437
438 * (% style="color:#037691" %)**Grab bytes**
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440 (% 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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444 * (% style="color:#037691" %)**Grab a section**
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446 (% aria-label="image-20220602153621-2.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-2.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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449
450 * (% style="color:#037691" %)**Grab different sections**
451
452 (% 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" %)​
453
454
455 )))
456
457 === 3.3.4 Compose the uplink payload ===
458
459
460 (((
461 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.**
462
463
464 )))
465
466 (((
467 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
468
469
470 )))
471
472 (((
473 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
474 )))
475
476 (((
477 Final Payload is (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
478 )))
479
480 (((
481 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
482
483
484 )))
485
486 [[image:image-20220929111027-1.png||height="509" width="685"]](% title="Click and drag to resize" %)​
487
488
489 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
490
491
492 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
493
494 Final Payload is (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
495
496
497 ~1. PAYVER: Defined by AT+PAYVER
498
499 2. PAYLOAD COUNT: Total how many uplinks of this sampling.
500
501 3. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
502
503 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
504
505
506 (% 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" %)​
507
508
509 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
510
511 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
512
513 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
514
515 DATA3=the rest of Valid value of RETURN10= **30**
516
517
518 (% 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:**
519
520
521 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
522
523 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
524
525 * For US915 band, max 11 bytes for each uplink.
526
527 ~* For all other bands: max 51 bytes for each uplink.
528
529
530 (% style="color:red" %)** When AT+DATAUP=1, the maximum number of segments is 15, and the maximum total number of bytes is 1500;**
531
532 (% 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)**
533
534
535
536 Below are the uplink payloads:
537
538
539 (% 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" %)​
540
541
542 === 3.3.5 Uplink on demand ===
543
544
545 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.
546
547 (% style="color:blue" %)**Downlink control command:**
548
549 (% style="color:#4472c4" %)** 0x08 command**(%%): Poll an uplink with current command set in RS485-LN.
550
551 (% style="color:#4472c4" %)** 0xA8 command**(%%): Send a command to RS485-LN and uplink the output from sensors.
552
553
554 === 3.3.6 Uplink on Interrupt ===
555
556
557 RS485-LN support external Interrupt uplink since hardware v1.2 release.
558
559
560 (% 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" %)​
561
562 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.
563
564
565 == 3.4 Uplink Payload ==
566
567
568 (% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:500px" %)
569 |=(% scope="row" style="width: 60px;" %)(((
570 Size(bytes)
571 )))|(% style="width:80px" %)1|(% style="width:360px" %)(((
572 Length depends on the return from the commands
573 )))
574 |=(% style="width: 90px;" %)(((
575 Value
576 )))|(% style="width:114px" %)(((
577 PAYLOAD_VER
578 )))|(% style="width:353px" %)(((
579 If the valid payload is too long and exceed the maximum
580
581 support payload length in server, server will show payload not
582
583 provided in the LoRaWAN server.
584 )))
585
586 (% 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"]]
587
588 (% title="Click and drag to resize" %)​
589
590 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
591
592
593 == 3.5 Configure RS485-LN via AT or Downlink ==
594
595
596 (((
597 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
598 )))
599
600 (((
601 There are two kinds of Commands:
602 )))
603
604 * (((
605 (% 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]]
606 )))
607
608 * (((
609 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
610 )))
611
612 (((
613
614 )))
615
616
617 === 3.5.1 Common Commands ===
618
619
620 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]]
621
622
623 === 3.5.2 Downlink Response(Since firmware v1.4) ===
624
625
626 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.
627
628
629 (% 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"]]
630
631 (% title="Click and drag to resize" %)​
632
633 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)
634
635
636 === 3.5.3 Sensor related commands ===
637
638
639
640 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
641
642
643 (((
644 This command is used to configure the RS485 devices; they won't be used during sampling. Max Length of AT+CFGDEV is **40 bytes**.
645 )))
646
647 (((
648 * (% style="color:#037691" %)**AT Command**
649
650 (((
651 (% 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
652 )))
653 )))
654
655 (((
656
657 )))
658
659 * (((
660 (% style="color:#037691" %)**Downlink Payload**
661 )))
662
663 (((
664 Format: (% style="color:#4472c4" %)** A8 MM NN XX XX XX XX YY**
665 )))
666
667 (((
668 Where:
669 )))
670
671 * (((
672 MM: 1: add CRC-16/MODBUS ; 0: no CRC
673 )))
674 * (((
675 NN: The length of RS485 command
676 )))
677 * (((
678 XX XX XX XX: RS485 command total NN bytes
679 )))
680 * (((
681 (((
682 YY: How many bytes will be uplink from the return of this RS485 command,
683 )))
684
685 * (((
686 if YY=0, RS485-LN will execute the downlink command without uplink;
687 )))
688 * (((
689 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
690 )))
691 * (((
692 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
693 )))
694 )))
695
696 (((
697
698
699 (% style="color:blue" %)**Example 1:**  (%%) ~-~-> Configure without ask for uplink (YY=0)
700 )))
701
702 (((
703 To connect a Modbus Alarm with below commands.
704 )))
705
706 * (((
707 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.
708 )))
709
710 * (((
711 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.
712 )))
713
714 (((
715
716
717 So if user want to use downlink command to control to RS485 Alarm, he can use:
718 )))
719
720 (((
721 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
722 )))
723
724 (((
725 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
726 )))
727
728 (((
729 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.
730 )))
731
732 (((
733
734 )))
735
736 (((
737 (% style="color:blue" %)**Example 2:**  (%%) ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
738 )))
739
740 (((
741 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
742 )))
743
744 (((
745
746 )))
747
748 (((
749 (((
750 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**
751 )))
752
753
754 )))
755
756 (((
757 (% 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" %)​
758 )))
759
760
761
762 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
763
764
765 (((
766 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.
767 )))
768
769 (((
770 * (% style="color:#037691" %)**AT Command:**
771
772 (% style="color:#4472c4" %)** AT+PAYVER:    ** (%%) Set PAYVER field = 1
773
774
775 )))
776
777 * (((
778 (% style="color:#037691" %)**Downlink Payload:**
779 )))
780
781 (((
782 (% style="color:#4472c4" %)** 0xAE 01** (%%) ~-~->  Set PAYVER field =  0x01
783 )))
784
785 (((
786 (% style="color:#4472c4" %)** 0xAE 0F**   (%%) ~-~->  Set PAYVER field =  0x0F
787 )))
788
789
790 **1 )  Add the interrupt flag at the highest bit of the Payver byte, that is, Byte7 of the first byte. (Since v1.4.0)**
791
792
793 [[image:image-20220824145428-2.png||height="168" width="1300"]]
794
795
796
797 **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.**
798
799
800 [[image:image-20220824145428-3.png||height="308" width="1200"]]
801
802
803
804 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
805
806
807 (((
808 AT+COMMANDx or AT+DATACUTx
809 )))
810
811 (((
812 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"]].
813 )))
814
815 (((
816
817 )))
818
819 * (((
820 (% style="color:#037691" %)**AT Command:**
821 )))
822
823 (% style="color:#4472c4" %)** AT+COMMANDx:    ** (%%) Configure RS485 read command to sensor.
824
825 (% style="color:#4472c4" %)** AT+DATACUTx:        **(%%) Configure how to handle return from RS485 devices.
826
827
828 * (((
829 (% style="color:#037691" %)**Downlink Payload:**
830 )))
831
832 (((
833 (% style="color:#4472c4" %)** 0xAF**(%%) downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
834
835
836 )))
837
838 (((
839 (% style="color:red" %)**Note : if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
840
841
842 )))
843
844 (((
845 Format: (% style="color:#4472c4" %)** AF MM NN LL XX XX XX XX YY**
846 )))
847
848 (((
849 Where:
850 )))
851
852 * (((
853 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
854 )))
855 * (((
856 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
857 )))
858 * (((
859 LL:  The length of AT+COMMAND or AT+DATACUT command
860 )))
861 * (((
862 XX XX XX XX: AT+COMMAND or AT+DATACUT command
863 )))
864 * (((
865 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.
866 )))
867
868 (((
869
870
871 **Example:**
872 )))
873
874 (((
875 (% 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
876 )))
877
878 (((
879 (% 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**
880 )))
881
882 (((
883 (% 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**
884 )))
885
886
887
888 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
889
890
891 (((
892 (% 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]].
893 )))
894
895 (((
896 This command is valid since v1.3 firmware version
897 )))
898
899 (((
900 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.
901 )))
902
903 (((
904
905 )))
906
907 (((
908 **Example:**
909 )))
910
911 * (((
912 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
913 )))
914 * (((
915 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.
916 )))
917 * (((
918 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.
919
920
921 )))
922
923 (% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]]
924
925 (% title="Click and drag to resize" %)​
926
927 (% 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" %)​
928
929
930
931 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
932
933
934 (((
935 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.
936 )))
937
938 (((
939 Default value: 0, range:  0 ~~ 65 seconds
940 )))
941
942 (((
943 * (% style="color:#037691" %)** AT Command:**
944
945 (% style="color:#4472c4" %)** AT+CMDDLaa=hex(bb cc)*1000**
946 )))
947
948 (((
949
950
951 **Example:**
952 )))
953
954 (((
955 (% style="color:#4472c4" %)** AT+CMDDL1=1000** (%%)to send the open time to 1000ms
956 )))
957
958 (((
959
960 )))
961
962 * (((
963 (% style="color:#037691" %)** Downlink Payload:**
964 )))
965
966 (((
967 (% style="color:#4472c4" %)** 0x AA aa bb cc**(%%) Same as: AT+CMDDLaa=hex (bb cc)
968 )))
969
970 (((
971
972
973 **Example:**
974 )))
975
976 (((
977 **0xAA 01 03 E8**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
978 )))
979
980
981
982 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
983
984
985 (((
986 Define to use one uplink or multiple uplinks for the sampling.
987 )))
988
989 (((
990 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
991
992
993 )))
994
995 (((
996 * (% style="color:#037691" %)** AT Command:**
997
998 (% style="color:#4472c4" %)** AT+DATAUP=0**
999
1000 (% style="color:#4472c4" %)** AT+DATAUP=1**
1001
1002
1003 )))
1004
1005 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1006
1007 Each uplink is sent to the server at 20-second intervals when segmented.
1008
1009
1010 * (((
1011 (% style="color:#037691" %)** Downlink Payload:**
1012 )))
1013
1014 (% style="color:#4472c4" %)** 0xAD 00** (%%) **~-~->** Same as AT+DATAUP=0
1015
1016 (% 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.
1017
1018
1019 * (((
1020 (% style="color:#037691" %)** AT Command:**
1021 )))
1022
1023 (% style="color:#4472c4" %)** AT+DATAUP=1,Timeout**
1024
1025
1026 * (((
1027 (% style="color:#037691" %)** Downlink Payload:**
1028 )))
1029
1030 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1031
1032 Each uplink is sent to the server at 20-second intervals when segmented.
1033
1034
1035
1036 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
1037
1038
1039 (((
1040 Ask device to send an uplink immediately.
1041 )))
1042
1043 * (((
1044 (% style="color:#037691" %)** AT Command:**
1045 )))
1046
1047 (((
1048 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
1049 )))
1050
1051 (((
1052
1053 )))
1054
1055 * (((
1056 (% style="color:#037691" %)** Downlink Payload:**
1057 )))
1058
1059 (((
1060 (% style="color:#4472c4" %)** 0x08 FF**(%%), RS485-LN will immediately send an uplink.
1061 )))
1062
1063
1064
1065 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
1066
1067
1068 (((
1069 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1070
1071
1072 )))
1073
1074 * (((
1075 (% style="color:#037691" %)** AT Command:**
1076 )))
1077
1078 (((
1079 (% style="color:#4472c4" %)** AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase
1080 )))
1081
1082 (((
1083
1084
1085 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1086 )))
1087
1088 (((
1089 Example screen shot after clear all RS485 commands. 
1090 )))
1091
1092 (((
1093
1094 )))
1095
1096 (((
1097 The uplink screen shot is:
1098 )))
1099
1100 (% 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" %)​
1101
1102
1103 * (((
1104 (% style="color:#037691" %)** Downlink Payload:**
1105 )))
1106
1107 (((
1108 (% style="color:#4472c4" %)** 0x09 aa bb** (%%) same as AT+CMDEAR=aa,bb
1109 )))
1110
1111
1112
1113 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1114
1115
1116 (((
1117 Set the Rs485 serial communication parameters:
1118 )))
1119
1120 (((
1121 (% style="color:#037691" %)**AT Command:**
1122 )))
1123
1124 (((
1125 * Set Baud Rate
1126 )))
1127
1128 (% 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
1129
1130
1131 (((
1132 * Set UART Parity
1133 )))
1134
1135 (% style="color:#4472c4" %)** AT+PARITY=0** (%%) ~/~/  Option: 0: no parity, 1: odd parity, 2: even parity
1136
1137
1138 (((
1139 * Set STOPBIT
1140 )))
1141
1142 (% style="color:#4472c4" %)** AT+STOPBIT=0** (%%) ~/~/  Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1143
1144
1145 (((
1146 (% style="color:#037691" %)**Downlink Payload:**
1147 )))
1148
1149 (((
1150 (% style="color:#4472c4" %)** A7 01 aa bb**:   (%%) Same  AT+BAUDR=hex(aa bb)*100
1151 )))
1152
1153 (((
1154 **Example:**
1155 )))
1156
1157 * (((
1158 A7 01 00 60  same as AT+BAUDR=9600
1159 )))
1160 * (((
1161 A7 01 04 80  same as AT+BAUDR=115200
1162 )))
1163
1164 (((
1165 * A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1166 )))
1167
1168 (((
1169 * A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1170 )))
1171
1172
1173
1174
1175 ==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.0)**(%%) ====
1176
1177
1178 * (((
1179 (% style="color:#037691" %)** AT Command:**
1180 )))
1181
1182 (% style="color:#4472c4" %)** AT+DATABIT=7    **(%%)~/~/ Set the data bits to 7
1183
1184 (% style="color:#4472c4" %)** AT+DATABIT=8    **(%%)~/~/ Set the data bits to 8
1185
1186 * (((
1187 (% style="color:#037691" %)**Downlink Payload:**
1188 )))
1189
1190 (% style="color:#4472c4" %)** A7 04 07**(%%): Same as  AT+DATABIT=7
1191
1192 (% style="color:#4472c4" %)** A7 04 08**(%%): Same as  AT+DATABIT=8
1193
1194
1195
1196 ==== (% style="color:blue" %)**Encrypted payload(Since Version 1.4.0)**(%%) ====
1197
1198 (((
1199
1200 )))
1201
1202 * (((
1203 (% style="color:#037691" %)** AT Command:**
1204 )))
1205
1206 (% style="color:#4472c4" %)** AT+DECRYPT=1  ** (%%) ~/~/ The payload is uploaded without encryption
1207
1208 (% style="color:#4472c4" %)** AT+DECRYPT=0  ** (%%) ~/~/ Encrypt when uploading payload (default)
1209
1210
1211
1212 ==== (% style="color:blue" %)**Get sensor value(Since Version 1.4.0)**(%%) ====
1213
1214
1215 * (((
1216 (% style="color:#037691" %)** AT Command:**
1217 )))
1218
1219 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=0  **(%%) ~/~/ The serial port gets the reading of the current sensor
1220
1221 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=1  **(%%) ~/~/ The serial port gets the current sensor reading and uploads it.
1222
1223
1224
1225 ==== (% style="color:blue" %)**Resets the downlink packet count(Since Version 1.4.0)**(%%) ====
1226
1227
1228 * (((
1229 (% style="color:#037691" %)** AT Command:**
1230 )))
1231
1232 (% 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)
1233
1234 (% 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.
1235
1236
1237
1238 ==== (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches(Since Version 1.4.0)**(%%) ====
1239
1240
1241 * (((
1242 (% style="color:#037691" %)** AT Command:**
1243 )))
1244
1245 (% 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)
1246
1247 (% 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.
1248
1249
1250 * (((
1251 (% style="color:#037691" %)** Downlink Payload:**
1252 )))
1253
1254 (% style="color:#4472c4" %)** 0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1255
1256
1257
1258 ==== (% style="color:blue" %)**Copy downlink to uplink (Since Version 1.4.0)**(%%) ====
1259
1260
1261 * (((
1262 (% style="color:#037691" %)** AT Command:**
1263 )))
1264
1265 (% 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.
1266
1267 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.
1268
1269
1270 [[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"]]
1271
1272 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1273
1274
1275
1276 [[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"]]
1277
1278 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1279
1280
1281
1282 ==== (% style="color:blue" %)**Query version number and frequency band 、TDC(Since Version 1.4.0)**(%%) ====
1283
1284
1285 (((
1286 * (% style="color:#037691" %)**Downlink Payload:**
1287
1288 (% style="color:#4472c4" %)** 26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1289 )))
1290
1291
1292 Example：
1293
1294
1295 [[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"]]
1296
1297
1298
1299 ==== (% style="color:blue" %)** Monitor RS485 communication of other devices(Since Version 1.4.0)**(%%) ====
1300
1301
1302 * (((
1303 (% style="color:#037691" %)** AT Command:**
1304 )))
1305
1306 (% 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.
1307
1308 (% 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.
1309
1310 (% style="color:#4472c4" %)**AT+RXMODE=0,0  ** (%%) ~/~/  Disable this mode (default)
1311
1312
1313 * (((
1314 (% style="color:#037691" %)**Downlink Payload:**
1315 )))
1316
1317 (% style="color:#4472c4" %)** A6 aa bb bb               ** (%%) ~/~/ same as AT+RXMODE=aa,bb
1318
1319 [[image:image-20220824144240-1.png]]
1320
1321
1322 == 3.6 Listening mode for RS485 network ==
1323
1324
1325 (((
1326 This feature support since firmware v1.4
1327 )))
1328
1329 (((
1330 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.
1331
1332
1333 )))
1334
1335 (% 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"]]
1336
1337 (% title="Click and drag to resize" %)​
1338
1339 (((
1340 To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
1341 )))
1342
1343 (((
1344
1345 )))
1346
1347 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1348 |=(% style="width: 100px;" %)(((
1349 **Command example**
1350 )))|=(% style="width: 400px;" %)(((
1351 **Function**
1352 )))
1353 |(% style="width:100px" %)(((
1354 AT+RXMODE=1,10
1355 )))|(% style="width:400px" %)(((
1356 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.
1357 )))
1358 |(% style="width:100px" %)(((
1359 AT+RXMODE=2,500
1360 )))|(% style="width:400px" %)(((
1361 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
1362 )))
1363 |(% style="width:100px" %)(((
1364 AT+RXMODE=0,0
1365 )))|(% style="width:400px" %)(((
1366 Disable listening mode. This is the default settings.
1367 )))
1368 |(% style="width:100px" %)(((
1369
1370 )))|(% style="width:400px" %)(((
1371 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1372 )))
1373
1374 (((
1375
1376
1377 (% style="color:#037691" %)**Downlink Command:**
1378 )))
1379
1380 (((
1381 (% style="color:#4472c4" %)** 0xA6 aa bb cc **(%%) same as AT+RXMODE=aa,(bb<<8 | cc)
1382 )))
1383
1384 (((
1385
1386 )))
1387
1388 (((
1389 **Example**:
1390 )))
1391
1392 (((
1393 The RS485-LN is set to AT+RXMODE=2,1000
1394 )))
1395
1396 (((
1397 There is a two Modbus commands in the RS485 network as below:
1398 )))
1399
1400 (((
1401 The Modbus master send a command: (% style="background-color:#ffc000" %)**01 03 00 00 00 02 c4 0b**
1402 )))
1403
1404 (((
1405 And Modbus slave reply with: (% style="background-color:green" %)**01 03 04 00 00 00 00 fa 33**
1406 )))
1407
1408 (((
1409 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**
1410
1411
1412 )))
1413
1414 (((
1415 (% 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" %)​
1416 )))
1417
1418 (((
1419
1420 )))
1421
1422 (((
1423 (((
1424 (% 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.**
1425 )))
1426 )))
1427
1428
1429 == 3.7 Buttons ==
1430
1431
1432 (% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
1433 |=(% style="width: 50px;" %)**Button**|=(% style="width: 380px;" %)**Feature**
1434 |(% 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**
1435 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1436 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1437
1438
1439
1440 == 3.8 LEDs ==
1441
1442
1443 (% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
1444 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1445 |**PWR**|Always on if there is power
1446 |**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.
1447
1448
1449
1450 = 4. Case Study =
1451
1452
1453 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]]
1454
1455
1456 = 5. Use AT Command =
1457
1458 == 5.1 Access AT Command ==
1459
1460
1461 (((
1462 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.
1463
1464
1465 )))
1466
1467 (% 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" %)​
1468
1469
1470
1471 (((
1472 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:
1473
1474
1475 )))
1476
1477 (% 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" %)​
1478
1479
1480 (((
1481 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/]]
1482 )))
1483
1484
1485 == 5.2 Common AT Command Sequence ==
1486
1487 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1488
1489
1490 If device has not joined network yet:
1491
1492 * (% style="color:#037691" %)**AT+FDR**
1493 * (% style="color:#037691" %)**AT+NJM=0**
1494 * (% style="color:#037691" %)**ATZ**
1495
1496 (((
1497
1498
1499 If device already joined network:
1500
1501 * (% style="color:#037691" %)**AT+NJM=0**
1502 * (% style="color:#037691" %)**ATZ**
1503 )))
1504
1505
1506
1507 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1508
1509
1510 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1511
1512 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1513
1514 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1515
1516 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1517
1518 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1519
1520 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1521
1522 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1523
1524 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1525
1526 (% 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.
1527
1528 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1529
1530
1531 (% style="color:red" %)**Note:**
1532
1533 (((
1534 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1535 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1536 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.
1537 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
1538
1539
1540 )))
1541
1542 (% 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" %)​
1543
1544
1545 = 6. FAQ =
1546
1547 == 6.1 How to upgrade the image? ==
1548
1549
1550 (((
1551 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1552 )))
1553
1554 * (((
1555 Support new features
1556 )))
1557 * (((
1558 For bug fix
1559 )))
1560 * (((
1561 Change LoRaWAN bands.
1562 )))
1563
1564 (((
1565 Below shows the hardware connection for how to upload an image to RS485-LN:
1566 )))
1567
1568 (% 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"]]
1569
1570 (% title="Click and drag to resize" %)​
1571
1572 (((
1573 (% 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]].
1574
1575
1576 )))
1577
1578 (((
1579 (% 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]].
1580
1581
1582 )))
1583
1584 (((
1585 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1586
1587
1588 )))
1589
1590 (((
1591 (((
1592 (((
1593 (% 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.
1594 )))
1595 )))
1596 )))
1597
1598
1599 (% 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" %)​
1600
1601
1602 (% 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" %)​
1603
1604
1605 (% 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" %)​
1606
1607
1608 (% 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:**
1609
1610 (% 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" %)​
1611
1612
1613 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1614
1615
1616 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1617
1618
1619 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1620
1621
1622 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"]].
1623
1624
1625 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1626
1627
1628 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1629
1630 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1631
1632
1633 == 6.5 Can i use point to point communication for RS485-LN? ==
1634
1635
1636 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]].
1637
1638
1639 == 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1640
1641
1642 [[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/]]
1643
1644
1645 == 6.7 How to judge whether there is a problem with the set COMMAND ==
1646
1647 === 6.7.1 Introduce: ===
1648
1649
1650 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:
1651
1652 1. Test if Modbus-MTU works with PC commands.
1653 1. Check if RS485-LN sent the expected command to Mobus-MTU
1654 1. Check if Modbus-MTU return back the expected result to RS485-LN.
1655 1. If both b) and c) has issue, we can compare PC’s output and RS485-LN output.
1656
1657 [[image:image-20221130104310-1.png||height="380" width="680"]]
1658
1659
1660 Example Connection:
1661
1662 [[image:image-20221130104310-2.png]]
1663
1664
1665 === 6.7.2 Set up PC to monitor RS485 network With Serial tool ===
1666
1667
1668 (% style="color:red" %)**Note: Receive and send set to hex mode**
1669
1670 [[image:image-20221130104310-3.png||height="616" width="714"]]
1671
1672
1673 === 6.7.3 With ModRSsim2: ===
1674
1675
1676 (% style="color:blue" %)**(1) Select serial port MODBUS RS-232**
1677
1678 [[image:image-20221130104310-4.png||height="390" width="865"]]
1679
1680
1681 (% style="color:blue" %)**(2) Click the serial port icon**
1682
1683 [[image:image-20221130104310-5.png||height="392" width="870"]]
1684
1685
1686 (% style="color:blue" %)**(3) After selecting the correct serial port and baud rate, click ok**
1687
1688 [[image:image-20221130104310-6.png]]
1689
1690
1691 (% style="color:blue" %)**(4) Click the comms.**
1692
1693 [[image:image-20221130104310-7.png||height="376" width="835"]]
1694
1695 (% class="wikigeneratedid" id="HRunRS485-LN2FBLcommandandmonitorifitiscorrect." %)
1696 **Run RS485-LN/BL command and monitor if it is correct.**
1697
1698
1699 === 6.7.4 Example – Test the CFGDEV command ===
1700
1701
1702 RS485-LN sent below command:
1703
1704 (% style="color:blue" %)**AT+CFGDEV=01 03 20 00 01 85 c0,1**(%%) to RS485 network, and PC is able to get this command and return commands from MTU to show in the serial tool.
1705
1706
1707 We can see the output from the Serial port tool to analyze. And check if they are expected result.
1708
1709 [[image:image-20221130104310-8.png||height="214" width="797"]]
1710
1711
1712 We can also use (% style="color:blue" %)**ModRSsim2**(%%) to see the output.
1713
1714 [[image:image-20221130104310-9.png||height="531" width="729"]]
1715
1716
1717 === 6.7.5 Example – Test CMD command sets. ===
1718
1719
1720 Run (% style="color:blue" %)**AT+SENSORVALUE=1**(%%) to test the CMD commands set in RS485-LN.
1721
1722
1723 (% style="color:blue" %)**Serial port tool:**
1724
1725 [[image:image-20221130104310-10.png||height="339" width="844"]]
1726
1727
1728 (% style="color:blue" %)**ModRSsim2:**
1729
1730 [[image:image-20221130104310-11.png||height="281" width="962"]]
1731
1732
1733 === 6.7.6 Test with PC ===
1734
1735
1736 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.
1737
1738
1739 Or User can send the working commands set in PC serial tool to Dragino Support to check what should be configured in RS485-LN.
1740
1741 (% style="color:blue" %)**Connection method：**
1742
1743 [[image:image-20221130104310-12.png]]
1744
1745
1746 (% style="color:blue" %)**Link situation:**
1747
1748 [[image:image-20221130104310-13.png||height="458" width="486"]]
1749
1750
1751 [[image:image-20221130104310-14.png||height="371" width="823"]]
1752
1753
1754 == 6.8 Where to get the decoder for RS485-LN? ==
1755
1756
1757 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)
1758
1759
1760 = 7. Trouble Shooting =
1761
1762 == 7.1 Downlink doesn't work, how to solve it? ==
1763
1764
1765 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1766
1767
1768 == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1769
1770
1771 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1772
1773
1774 = 8. Order Info =
1775
1776
1777 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1778
1779 (% style="color:blue" %)**XXX:**
1780
1781 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1782 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1783 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1784 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1785 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1786 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1787 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1788 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1789 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1790 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1791
1792
1793
1794 = 9. Packing Info =
1795
1796
1797 **Package Includes**:
1798
1799 * RS485-LN x 1
1800 * Stick Antenna for LoRa RF part x 1
1801 * Program cable x 1
1802
1803 **Dimension and weight**:
1804
1805 * Device Size: 13.5 x 7 x 3 cm
1806 * Device Weight: 105g
1807 * Package Size / pcs : 14.5 x 8 x 5 cm
1808 * Weight / pcs : 170g
1809
1810
1811
1812 = 10. FCC Caution for RS485LN-US915 =
1813
1814
1815 (((
1816 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1817 )))
1818
1819 (((
1820 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.
1821 )))
1822
1823 (((
1824
1825 )))
1826
1827 (((
1828 (% style="color:red" %)**IMPORTANT NOTE:**
1829 )))
1830
1831 (((
1832 (% 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:
1833 )))
1834
1835 (((
1836 —Reorient or relocate the receiving antenna.
1837 )))
1838
1839 (((
1840 —Increase the separation between the equipment and receiver.
1841 )))
1842
1843 (((
1844 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1845 )))
1846
1847 (((
1848 —Consult the dealer or an experienced radio/TV technician for help.
1849 )))
1850
1851 (((
1852
1853 )))
1854
1855 (((
1856 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1857 )))
1858
1859 (((
1860 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.
1861 )))
1862
1863
1864 = 11. Support =
1865
1866
1867 * (((
1868 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.
1869 )))
1870 * (((
1871 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]].
1872
1873
1874
1875 )))

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