Version 102.5 by Xiaoling on 2023/04/25 11:00
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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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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 ==
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62
63 (% style="color:#037691" %)**Hardware System:**
64
65 * STM32L072xxxx MCU
66 * SX1276/78 Wireless Chip 
67 * Power Consumption (exclude RS485 device):
68 ** Idle: 32mA@12v
69 ** 20dB Transmit: 65mA@12v
70
71 (% style="color:#037691" %)**Interface for Model:**
72
73 * RS485
74 * Power Input 7~~ 24V DC. 
75
76 (% style="color:#037691" %)**LoRa Spec:**
77
78 * Frequency Range:
79 ** Band 1 (HF): 862 ~~ 1020 Mhz
80 ** Band 2 (LF): 410 ~~ 528 Mhz
81 * 168 dB maximum link budget.
82 * +20 dBm - 100 mW constant RF output vs.
83 * +14 dBm high efficiency PA.
84 * Programmable bit rate up to 300 kbps.
85 * High sensitivity: down to -148 dBm.
86 * Bullet-proof front end: IIP3 = -12.5 dBm.
87 * Excellent blocking immunity.
88 * Low RX current of 10.3 mA, 200 nA register retention.
89 * Fully integrated synthesizer with a resolution of 61 Hz.
90 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
91 * Built-in bit synchronizer for clock recovery.
92 * Preamble detection.
93 * 127 dB Dynamic Range RSSI.
94 * Automatic RF Sense and CAD with ultra-fast AFC.
95 * Packet engine up to 256 bytes with CRC
96
97 == 1.3 Features ==
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99
100 * LoRaWAN Class A & Class C protocol (default Class C)
101 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864/MA869
102 * AT Commands to change parameters
103 * Remote configure parameters via LoRa Downlink
104 * Firmware upgradable via program port
105 * Support multiply RS485 devices by flexible rules
106 * Support Modbus protocol
107 * Support Interrupt uplink (Since hardware version v1.2)
108
109 == 1.4 Applications ==
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111
112 * Smart Buildings & Home Automation
113 * Logistics and Supply Chain Management
114 * Smart Metering
115 * Smart Agriculture
116 * Smart Cities
117 * Smart Factory
118
119 == 1.5 Firmware Change log ==
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122 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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124
125 == 1.6 Hardware Change log ==
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131 v1.2: Add External Interrupt Pin.
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135 v1.0: Release
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141
142 = 2. Power ON Device =
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146 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
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148 * Power Source VIN to RS485-LN VIN+
149 * Power Source GND to RS485-LN VIN-
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152 Once there is power, the RS485-LN will be on.
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159
160 = 3. Operation Mode =
161
162 == 3.1 How it works? ==
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167 The RS485-LN is configured as LoRaWAN OTAA Class C mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and power on the RS485-LN. It will auto join the network via OTAA.
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172
173 == 3.2 Example to join LoRaWAN network ==
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176 Here shows an example for how to join the TTN V3 Network. Below is the network structure, we use [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]] as LoRaWAN gateway here. 
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184 The RS485-LN in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method. The connection is as below:
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188 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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197 The LG308 is already set to connect to [[TTN V3 network >>path:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:
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203 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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207 Each RS485-LN is shipped with a sticker with unique device EUI:
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216 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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222 **Add APP EUI in the application.**
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235 (% title="Click and drag to resize" %)​
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237 You can also choose to create the device manually.
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239 (% aria-label="1652953542269-423.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953542269-423.png||data-widget="image" height="710" width="723"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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243 **Add APP KEY and DEV EUI**
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245 (% aria-label="1652953553383-907.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953553383-907.png||data-widget="image" height="514" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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250 (% style="color:blue" %)**Step 2**(%%): Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
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255 (% aria-label="1652953568895-172.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953568895-172.png||data-widget="image" height="232" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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257
258 == 3.3 Configure Commands to read data ==
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261 (((
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264 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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272 (% 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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278
279 === 3.3.1 Configure UART settings for RS485 or TTL communication ===
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282 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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285 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
286 |=(% style="width: 119px; background-color: rgb(217, 226, 243); color: rgb(0, 112, 192);" %)(((
287 **AT Commands**
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289 **Description**
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291 **Example**
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293 |(% style="width:119px" %)(((
294 AT+BAUDR
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296 Set the baud rate (for RS485 connection). Default Value is: 9600.
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299 AT+BAUDR=9600
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303 Options: (1200,2400,4800,14400,19200,115200)
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307 AT+PARITY
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309 Set UART parity (for RS485 connection)
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312 AT+PARITY=0
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316 Option: 0: no parity, 1: odd parity, 2: even parity
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319 |(% style="width:119px" %)(((
320 AT+STOPBIT
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323 Set serial stopbit (for RS485 connection)
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331 AT+STOPBIT=0 for 1bit
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335 AT+STOPBIT=1 for 1.5 bit
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339 AT+STOPBIT=2 for 2 bits
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342
343 === 3.3.2 Configure sensors ===
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348 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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354 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
355 |=(% 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**
356 |(% style="width:122px" %)AT+CFGDEV|(% style="width:196px" %)(((
357 (((
358 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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361 (((
362 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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365 (((
366 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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368 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
369
370 === 3.3.3 Configure read commands for each sampling ===
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374 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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376 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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378 This section describes how to achieve above goals.
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380 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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383 (% style="color:#037691" %)**Each RS485 commands include two parts:**
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386 ~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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388 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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390 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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393 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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395 Below are examples for the how above AT Commands works.
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397
398 (% 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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400 (% border="1" style="background-color:#f2f2f2; width:499px" %)
401 |(% style="width:496px" %)(((
402 **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
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404 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
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406 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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408
409 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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411 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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414 (% 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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416 (% border="1" style="background-color:#f2f2f2; width:510px" %)
417 |(% style="width:510px" %)(((
418 **AT+DATACUTx=a,b,c**
419
420 * **a: length for the return of AT+COMMAND**
421 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
422 * **c: define the position for valid value.  **
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424
425 **Examples:**
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428 * (% style="color:#037691" %)**Grab bytes**
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430 (% 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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434 * (% style="color:#037691" %)**Grab a section**
435
436 (% 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" %)​
437
438
439
440 * (% style="color:#037691" %)**Grab different sections**
441
442 (% 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" %)​
443
444
445 )))
446
447 === 3.3.4 Compose the uplink payload ===
448
449
450 (((
451 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.**
452
453
454 )))
455
456 (((
457 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
458
459
460 )))
461
462 (((
463 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
464 )))
465
466 (((
467 Final Payload is (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
468 )))
469
470 (((
471 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
472
473
474 )))
475
476 [[image:image-20220929111027-1.png||height="509" width="685"]](% title="Click and drag to resize" %)​
477
478
479 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
480
481
482 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
483
484 Final Payload is (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
485
486
487 ~1. PAYVER: Defined by AT+PAYVER
488
489 2. PAYLOAD COUNT: Total how many uplinks of this sampling.
490
491 3. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
492
493 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
494
495
496 (% 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" %)​
497
498
499 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
500
501 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
502
503 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
504
505 DATA3=the rest of Valid value of RETURN10= **30**
506
507
508 (% 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:**
509
510
511 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
512
513 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
514
515 * For US915 band, max 11 bytes for each uplink.
516
517 ~* For all other bands: max 51 bytes for each uplink.
518
519
520 (% style="color:red" %)** When AT+DATAUP=1, the maximum number of segments is 15, and the maximum total number of bytes is 1500;**
521
522 (% 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)**
523
524
525
526 Below are the uplink payloads:
527
528
529 (% 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" %)​
530
531
532 === 3.3.5 Uplink on demand ===
533
534
535 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.
536
537 (% style="color:blue" %)**Downlink control command:**
538
539 (% style="color:#4472c4" %)** 0x08 command**(%%): Poll an uplink with current command set in RS485-LN.
540
541 (% style="color:#4472c4" %)** 0xA8 command**(%%): Send a command to RS485-LN and uplink the output from sensors.
542
543
544 === 3.3.6 Uplink on Interrupt ===
545
546
547 RS485-LN support external Interrupt uplink since hardware v1.2 release.
548
549
550 (% 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" %)​
551
552 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.
553
554
555 == 3.4 Uplink Payload ==
556
557
558 (% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:500px" %)
559 |=(% scope="row" style="width: 60px;" %)(((
560 Size(bytes)
561 )))|(% style="width:80px" %)1|(% style="width:360px" %)(((
562 Length depends on the return from the commands
563 )))
564 |=(% style="width: 90px;" %)(((
565 Value
566 )))|(% style="width:114px" %)(((
567 PAYLOAD_VER
568 )))|(% style="width:353px" %)(((
569 If the valid payload is too long and exceed the maximum
570
571 support payload length in server, server will show payload not
572
573 provided in the LoRaWAN server.
574 )))
575
576 (% 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"]]
577
578 (% title="Click and drag to resize" %)​
579
580 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
581
582
583 == 3.5 Configure RS485-LN via AT or Downlink ==
584
585
586 (((
587 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
588 )))
589
590 (((
591 There are two kinds of Commands:
592 )))
593
594 * (((
595 (% 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]]
596 )))
597
598 * (((
599 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
600 )))
601
602 (((
603
604 )))
605
606
607 === 3.5.1 Common Commands ===
608
609
610 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]]
611
612
613 === 3.5.2 Downlink Response(Since firmware v1.4) ===
614
615
616 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.
617
618
619 (% 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"]]
620
621 (% title="Click and drag to resize" %)​
622
623 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)
624
625
626 === 3.5.3 Sensor related commands ===
627
628
629
630 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
631
632
633 (((
634 This command is used to configure the RS485 devices; they won't be used during sampling. Max Length of AT+CFGDEV is **40 bytes**.
635 )))
636
637 (((
638 * (% style="color:#037691" %)**AT Command**
639
640 (((
641 (% 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
642 )))
643 )))
644
645 (((
646
647 )))
648
649 * (((
650 (% style="color:#037691" %)**Downlink Payload**
651 )))
652
653 (((
654 Format: (% style="color:#4472c4" %)** A8 MM NN XX XX XX XX YY**
655 )))
656
657 (((
658 Where:
659 )))
660
661 * (((
662 MM: 1: add CRC-16/MODBUS ; 0: no CRC
663 )))
664 * (((
665 NN: The length of RS485 command
666 )))
667 * (((
668 XX XX XX XX: RS485 command total NN bytes
669 )))
670 * (((
671 (((
672 YY: How many bytes will be uplink from the return of this RS485 command,
673 )))
674
675 * (((
676 if YY=0, RS485-LN will execute the downlink command without uplink;
677 )))
678 * (((
679 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
680 )))
681 * (((
682 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
683 )))
684 )))
685
686 (((
687
688
689 (% style="color:blue" %)**Example 1:**  (%%) ~-~-> Configure without ask for uplink (YY=0)
690 )))
691
692 (((
693 To connect a Modbus Alarm with below commands.
694 )))
695
696 * (((
697 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.
698 )))
699
700 * (((
701 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.
702 )))
703
704 (((
705
706
707 So if user want to use downlink command to control to RS485 Alarm, he can use:
708 )))
709
710 (((
711 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
712 )))
713
714 (((
715 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
716 )))
717
718 (((
719 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.
720 )))
721
722 (((
723
724 )))
725
726 (((
727 (% style="color:blue" %)**Example 2:**  (%%) ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
728 )))
729
730 (((
731 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
732 )))
733
734 (((
735
736 )))
737
738 (((
739 (((
740 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**
741 )))
742
743
744 )))
745
746 (((
747 (% 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" %)​
748 )))
749
750
751
752 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
753
754
755 (((
756 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.
757 )))
758
759 (((
760 * (% style="color:#037691" %)**AT Command:**
761
762 (% style="color:#4472c4" %)** AT+PAYVER:    ** (%%) Set PAYVER field = 1
763
764
765 )))
766
767 * (((
768 (% style="color:#037691" %)**Downlink Payload:**
769 )))
770
771 (((
772 (% style="color:#4472c4" %)** 0xAE 01** (%%) ~-~->  Set PAYVER field =  0x01
773 )))
774
775 (((
776 (% style="color:#4472c4" %)** 0xAE 0F**   (%%) ~-~->  Set PAYVER field =  0x0F
777 )))
778
779
780 **1 )  Add the interrupt flag at the highest bit of the Payver byte, that is, Byte7 of the first byte. (Since v1.4.0)**
781
782
783 [[image:image-20220824145428-2.png||height="168" width="1300"]]
784
785
786
787 **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.**
788
789
790 [[image:image-20220824145428-3.png||height="308" width="1200"]]
791
792
793
794 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
795
796
797 (((
798 AT+COMMANDx or AT+DATACUTx
799 )))
800
801 (((
802 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"]].
803 )))
804
805 (((
806
807 )))
808
809 * (((
810 (% style="color:#037691" %)**AT Command:**
811 )))
812
813 (% style="color:#4472c4" %)** AT+COMMANDx:    ** (%%) Configure RS485 read command to sensor.
814
815 (% style="color:#4472c4" %)** AT+DATACUTx:        **(%%) Configure how to handle return from RS485 devices.
816
817
818 * (((
819 (% style="color:#037691" %)**Downlink Payload:**
820 )))
821
822 (((
823 (% style="color:#4472c4" %)** 0xAF**(%%) downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
824
825
826 )))
827
828 (((
829 (% style="color:red" %)**Note : if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
830
831
832 )))
833
834 (((
835 Format: (% style="color:#4472c4" %)** AF MM NN LL XX XX XX XX YY**
836 )))
837
838 (((
839 Where:
840 )))
841
842 * (((
843 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
844 )))
845 * (((
846 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
847 )))
848 * (((
849 LL:  The length of AT+COMMAND or AT+DATACUT command
850 )))
851 * (((
852 XX XX XX XX: AT+COMMAND or AT+DATACUT command
853 )))
854 * (((
855 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.
856 )))
857
858 (((
859
860
861 **Example:**
862 )))
863
864 (((
865 (% 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
866 )))
867
868 (((
869 (% 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**
870 )))
871
872 (((
873 (% 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**
874 )))
875
876
877
878 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
879
880
881 (((
882 (% 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]].
883 )))
884
885 (((
886 This command is valid since v1.3 firmware version
887 )))
888
889 (((
890 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.
891 )))
892
893 (((
894
895 )))
896
897 (((
898 **Example:**
899 )))
900
901 * (((
902 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
903 )))
904 * (((
905 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.
906 )))
907 * (((
908 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.
909
910
911 )))
912
913 (% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]]
914
915 (% title="Click and drag to resize" %)​
916
917 (% 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" %)​
918
919
920
921 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
922
923
924 (((
925 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.
926 )))
927
928 (((
929 Default value: 0, range:  0 ~~ 65 seconds
930 )))
931
932 (((
933 * (% style="color:#037691" %)** AT Command:**
934
935 (% style="color:#4472c4" %)** AT+CMDDLaa=hex(bb cc)*1000**
936 )))
937
938 (((
939
940
941 **Example:**
942 )))
943
944 (((
945 (% style="color:#4472c4" %)** AT+CMDDL1=1000** (%%)to send the open time to 1000ms
946 )))
947
948 (((
949
950 )))
951
952 * (((
953 (% style="color:#037691" %)** Downlink Payload:**
954 )))
955
956 (((
957 (% style="color:#4472c4" %)** 0x AA aa bb cc**(%%) Same as: AT+CMDDLaa=hex (bb cc)
958 )))
959
960 (((
961
962
963 **Example:**
964 )))
965
966 (((
967 **0xAA 01 03 E8**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
968 )))
969
970
971
972 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
973
974
975 (((
976 Define to use one uplink or multiple uplinks for the sampling.
977 )))
978
979 (((
980 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
981
982
983 )))
984
985 (((
986 * (% style="color:#037691" %)** AT Command:**
987
988 (% style="color:#4472c4" %)** AT+DATAUP=0**
989
990 (% style="color:#4472c4" %)** AT+DATAUP=1**
991
992
993 )))
994
995 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
996
997 Each uplink is sent to the server at 20-second intervals when segmented.
998
999
1000 * (((
1001 (% style="color:#037691" %)** Downlink Payload:**
1002 )))
1003
1004 (% style="color:#4472c4" %)** 0xAD 00** (%%) **~-~->** Same as AT+DATAUP=0
1005
1006 (% 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.
1007
1008
1009 * (((
1010 (% style="color:#037691" %)** AT Command:**
1011 )))
1012
1013 (% style="color:#4472c4" %)** AT+DATAUP=1,Timeout**
1014
1015
1016 * (((
1017 (% style="color:#037691" %)** Downlink Payload:**
1018 )))
1019
1020 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1021
1022 Each uplink is sent to the server at 20-second intervals when segmented.
1023
1024
1025
1026 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
1027
1028
1029 (((
1030 Ask device to send an uplink immediately.
1031 )))
1032
1033 * (((
1034 (% style="color:#037691" %)** AT Command:**
1035 )))
1036
1037 (((
1038 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
1039 )))
1040
1041 (((
1042
1043 )))
1044
1045 * (((
1046 (% style="color:#037691" %)** Downlink Payload:**
1047 )))
1048
1049 (((
1050 (% style="color:#4472c4" %)** 0x08 FF**(%%), RS485-LN will immediately send an uplink.
1051 )))
1052
1053
1054
1055 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
1056
1057
1058 (((
1059 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1060
1061
1062 )))
1063
1064 * (((
1065 (% style="color:#037691" %)** AT Command:**
1066 )))
1067
1068 (((
1069 (% style="color:#4472c4" %)** AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase
1070 )))
1071
1072 (((
1073
1074
1075 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1076 )))
1077
1078 (((
1079 Example screen shot after clear all RS485 commands. 
1080 )))
1081
1082 (((
1083
1084 )))
1085
1086 (((
1087 The uplink screen shot is:
1088 )))
1089
1090 (% 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" %)​
1091
1092
1093 * (((
1094 (% style="color:#037691" %)** Downlink Payload:**
1095 )))
1096
1097 (((
1098 (% style="color:#4472c4" %)** 0x09 aa bb** (%%) same as AT+CMDEAR=aa,bb
1099 )))
1100
1101
1102
1103 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1104
1105
1106 (((
1107 Set the Rs485 serial communication parameters:
1108 )))
1109
1110 (((
1111 (% style="color:#037691" %)**AT Command:**
1112 )))
1113
1114 (((
1115 * Set Baud Rate
1116 )))
1117
1118 (% 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
1119
1120
1121 (((
1122 * Set UART Parity
1123 )))
1124
1125 (% style="color:#4472c4" %)** AT+PARITY=0** (%%) ~/~/  Option: 0: no parity, 1: odd parity, 2: even parity
1126
1127
1128 (((
1129 * Set STOPBIT
1130 )))
1131
1132 (% style="color:#4472c4" %)** AT+STOPBIT=0** (%%) ~/~/  Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1133
1134
1135 (((
1136 (% style="color:#037691" %)**Downlink Payload:**
1137 )))
1138
1139 (((
1140 (% style="color:#4472c4" %)** A7 01 aa bb**:   (%%) Same  AT+BAUDR=hex(aa bb)*100
1141 )))
1142
1143 (((
1144 **Example:**
1145 )))
1146
1147 * (((
1148 A7 01 00 60  same as AT+BAUDR=9600
1149 )))
1150 * (((
1151 A7 01 04 80  same as AT+BAUDR=115200
1152 )))
1153
1154 (((
1155 * A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1156 )))
1157
1158 (((
1159 * A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1160 )))
1161
1162
1163
1164
1165 ==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.0)**(%%) ====
1166
1167
1168 * (((
1169 (% style="color:#037691" %)** AT Command:**
1170 )))
1171
1172 (% style="color:#4472c4" %)** AT+DATABIT=7    **(%%)~/~/ Set the data bits to 7
1173
1174 (% style="color:#4472c4" %)** AT+DATABIT=8    **(%%)~/~/ Set the data bits to 8
1175
1176 * (((
1177 (% style="color:#037691" %)**Downlink Payload:**
1178 )))
1179
1180 (% style="color:#4472c4" %)** A7 04 07**(%%): Same as  AT+DATABIT=7
1181
1182 (% style="color:#4472c4" %)** A7 04 08**(%%): Same as  AT+DATABIT=8
1183
1184
1185
1186 ==== (% style="color:blue" %)**Encrypted payload(Since Version 1.4.0)**(%%) ====
1187
1188 (((
1189
1190 )))
1191
1192 * (((
1193 (% style="color:#037691" %)** AT Command:**
1194 )))
1195
1196 (% style="color:#4472c4" %)** AT+DECRYPT=1  ** (%%) ~/~/ The payload is uploaded without encryption
1197
1198 (% style="color:#4472c4" %)** AT+DECRYPT=0  ** (%%) ~/~/ Encrypt when uploading payload (default)
1199
1200
1201
1202 ==== (% style="color:blue" %)**Get sensor value(Since Version 1.4.0)**(%%) ====
1203
1204
1205 * (((
1206 (% style="color:#037691" %)** AT Command:**
1207 )))
1208
1209 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=0  **(%%) ~/~/ The serial port gets the reading of the current sensor
1210
1211 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=1  **(%%) ~/~/ The serial port gets the current sensor reading and uploads it.
1212
1213
1214
1215 ==== (% style="color:blue" %)**Resets the downlink packet count(Since Version 1.4.0)**(%%) ====
1216
1217
1218 * (((
1219 (% style="color:#037691" %)** AT Command:**
1220 )))
1221
1222 (% 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)
1223
1224 (% 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.
1225
1226
1227
1228 ==== (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches(Since Version 1.4.0)**(%%) ====
1229
1230
1231 * (((
1232 (% style="color:#037691" %)** AT Command:**
1233 )))
1234
1235 (% 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)
1236
1237 (% 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.
1238
1239
1240 * (((
1241 (% style="color:#037691" %)** Downlink Payload:**
1242 )))
1243
1244 (% style="color:#4472c4" %)** 0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1245
1246
1247
1248 ==== (% style="color:blue" %)**Copy downlink to uplink (Since Version 1.4.0)**(%%) ====
1249
1250
1251 * (((
1252 (% style="color:#037691" %)** AT Command:**
1253 )))
1254
1255 (% 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.
1256
1257 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.
1258
1259
1260 [[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"]]
1261
1262 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1263
1264
1265
1266 [[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"]]
1267
1268 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1269
1270
1271
1272 ==== (% style="color:blue" %)**Query version number and frequency band 、TDC(Since Version 1.4.0)**(%%) ====
1273
1274
1275 (((
1276 * (% style="color:#037691" %)**Downlink Payload:**
1277
1278 (% style="color:#4472c4" %)** 26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1279 )))
1280
1281
1282 Example：
1283
1284
1285 [[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"]]
1286
1287
1288
1289 ==== (% style="color:blue" %)** Monitor RS485 communication of other devices(Since Version 1.4.0)**(%%) ====
1290
1291
1292 * (((
1293 (% style="color:#037691" %)** AT Command:**
1294 )))
1295
1296 (% 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.
1297
1298 (% 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.
1299
1300 (% style="color:#4472c4" %)**AT+RXMODE=0,0  ** (%%) ~/~/  Disable this mode (default)
1301
1302
1303 * (((
1304 (% style="color:#037691" %)**Downlink Payload:**
1305 )))
1306
1307 (% style="color:#4472c4" %)** A6 aa bb bb               ** (%%) ~/~/ same as AT+RXMODE=aa,bb
1308
1309 [[image:image-20220824144240-1.png]]
1310
1311
1312 == 3.6 Listening mode for RS485 network ==
1313
1314
1315 (((
1316 This feature support since firmware v1.4
1317 )))
1318
1319 (((
1320 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.
1321
1322
1323 )))
1324
1325 (% 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"]]
1326
1327 (% title="Click and drag to resize" %)​
1328
1329 (((
1330 To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
1331 )))
1332
1333 (((
1334
1335 )))
1336
1337 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1338 |=(% style="width: 100px;" %)(((
1339 **Command example**
1340 )))|=(% style="width: 400px;" %)(((
1341 **Function**
1342 )))
1343 |(% style="width:100px" %)(((
1344 AT+RXMODE=1,10
1345 )))|(% style="width:400px" %)(((
1346 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.
1347 )))
1348 |(% style="width:100px" %)(((
1349 AT+RXMODE=2,500
1350 )))|(% style="width:400px" %)(((
1351 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
1352 )))
1353 |(% style="width:100px" %)(((
1354 AT+RXMODE=0,0
1355 )))|(% style="width:400px" %)(((
1356 Disable listening mode. This is the default settings.
1357 )))
1358 |(% style="width:100px" %)(((
1359
1360 )))|(% style="width:400px" %)(((
1361 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1362 )))
1363
1364 (((
1365
1366
1367 (% style="color:#037691" %)**Downlink Command:**
1368 )))
1369
1370 (((
1371 (% style="color:#4472c4" %)** 0xA6 aa bb cc **(%%) same as AT+RXMODE=aa,(bb<<8 | cc)
1372 )))
1373
1374 (((
1375
1376 )))
1377
1378 (((
1379 **Example**:
1380 )))
1381
1382 (((
1383 The RS485-LN is set to AT+RXMODE=2,1000
1384 )))
1385
1386 (((
1387 There is a two Modbus commands in the RS485 network as below:
1388 )))
1389
1390 (((
1391 The Modbus master send a command: (% style="background-color:#ffc000" %)**01 03 00 00 00 02 c4 0b**
1392 )))
1393
1394 (((
1395 And Modbus slave reply with: (% style="background-color:green" %)**01 03 04 00 00 00 00 fa 33**
1396 )))
1397
1398 (((
1399 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**
1400
1401
1402 )))
1403
1404 (((
1405 (% 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" %)​
1406 )))
1407
1408 (((
1409
1410 )))
1411
1412 (((
1413 (((
1414 (% 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.**
1415 )))
1416 )))
1417
1418
1419 == 3.7 Buttons ==
1420
1421
1422 (% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
1423 |=(% style="width: 50px;" %)**Button**|=(% style="width: 380px;" %)**Feature**
1424 |(% 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**
1425 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1426 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1427
1428 == 3.8 LEDs ==
1429
1430
1431 (% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
1432 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1433 |**PWR**|Always on if there is power
1434 |**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.
1435
1436 = 4. Case Study =
1437
1438
1439 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]]
1440
1441
1442 = 5. Use AT Command =
1443
1444 == 5.1 Access AT Command ==
1445
1446
1447 (((
1448 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.
1449
1450
1451 )))
1452
1453 (% 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" %)​
1454
1455
1456
1457 (((
1458 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:
1459
1460
1461 )))
1462
1463 (% 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" %)​
1464
1465
1466 (((
1467 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/]]
1468 )))
1469
1470
1471 == 5.2 Common AT Command Sequence ==
1472
1473 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1474
1475
1476 If device has not joined network yet:
1477
1478 * (% style="color:#037691" %)**AT+FDR**
1479 * (% style="color:#037691" %)**AT+NJM=0**
1480 * (% style="color:#037691" %)**ATZ**
1481
1482 (((
1483
1484
1485 If device already joined network:
1486
1487 * (% style="color:#037691" %)**AT+NJM=0**
1488 * (% style="color:#037691" %)**ATZ**
1489 )))
1490
1491
1492
1493 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1494
1495
1496 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1497
1498 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1499
1500 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1501
1502 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1503
1504 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1505
1506 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1507
1508 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1509
1510 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1511
1512 (% 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.
1513
1514 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1515
1516
1517 (% style="color:red" %)**Note:**
1518
1519 (((
1520 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1521 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1522 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.
1523 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
1524
1525
1526 )))
1527
1528 (% 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" %)​
1529
1530
1531 = 6. FAQ =
1532
1533 == 6.1 How to upgrade the image? ==
1534
1535
1536 (((
1537 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1538 )))
1539
1540 * (((
1541 Support new features
1542 )))
1543 * (((
1544 For bug fix
1545 )))
1546 * (((
1547 Change LoRaWAN bands.
1548 )))
1549
1550 (((
1551 Below shows the hardware connection for how to upload an image to RS485-LN:
1552 )))
1553
1554 (% 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"]]
1555
1556 (% title="Click and drag to resize" %)​
1557
1558 (((
1559 (% 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]].
1560
1561
1562 )))
1563
1564 (((
1565 (% 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]].
1566
1567
1568 )))
1569
1570 (((
1571 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1572
1573
1574 )))
1575
1576 (((
1577 (((
1578 (((
1579 (% 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.
1580 )))
1581 )))
1582 )))
1583
1584
1585 (% 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" %)​
1586
1587
1588 (% 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" %)​
1589
1590
1591 (% 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" %)​
1592
1593
1594 (% 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:**
1595
1596 (% 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" %)​
1597
1598
1599 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1600
1601
1602 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1603
1604
1605 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1606
1607
1608 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"]].
1609
1610
1611 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1612
1613
1614 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1615
1616 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1617
1618
1619 == 6.5 Can i use point to point communication for RS485-LN? ==
1620
1621
1622 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]].
1623
1624
1625 == 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1626
1627
1628 [[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/]]
1629
1630
1631 == 6.7 How to judge whether there is a problem with the set COMMAND ==
1632
1633 === 6.7.1 Introduce: ===
1634
1635
1636 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:
1637
1638 1. Test if Modbus-MTU works with PC commands.
1639 1. Check if RS485-LN sent the expected command to Mobus-MTU
1640 1. Check if Modbus-MTU return back the expected result to RS485-LN.
1641 1. If both b) and c) has issue, we can compare PC’s output and RS485-LN output.
1642
1643 [[image:image-20221130104310-1.png||height="380" width="680"]]
1644
1645
1646 Example Connection:
1647
1648 [[image:image-20221130104310-2.png]]
1649
1650
1651 === 6.7.2 Set up PC to monitor RS485 network With Serial tool ===
1652
1653
1654 (% style="color:red" %)**Note: Receive and send set to hex mode**
1655
1656 [[image:image-20221130104310-3.png||height="616" width="714"]]
1657
1658
1659 === 6.7.3 With ModRSsim2: ===
1660
1661
1662 (% style="color:blue" %)**(1) Select serial port MODBUS RS-232**
1663
1664 [[image:image-20221130104310-4.png||height="390" width="865"]]
1665
1666
1667 (% style="color:blue" %)**(2) Click the serial port icon**
1668
1669 [[image:image-20221130104310-5.png||height="392" width="870"]]
1670
1671
1672 (% style="color:blue" %)**(3) After selecting the correct serial port and baud rate, click ok**
1673
1674 [[image:image-20221130104310-6.png]]
1675
1676
1677 (% style="color:blue" %)**(4) Click the comms.**
1678
1679 [[image:image-20221130104310-7.png||height="376" width="835"]]
1680
1681 (% class="wikigeneratedid" id="HRunRS485-LN2FBLcommandandmonitorifitiscorrect." %)
1682 **Run RS485-LN/BL command and monitor if it is correct.**
1683
1684
1685 === 6.7.4 Example – Test the CFGDEV command ===
1686
1687
1688 RS485-LN sent below command:
1689
1690 (% 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.
1691
1692
1693 We can see the output from the Serial port tool to analyze. And check if they are expected result.
1694
1695 [[image:image-20221130104310-8.png||height="214" width="797"]]
1696
1697
1698 We can also use (% style="color:blue" %)**ModRSsim2**(%%) to see the output.
1699
1700 [[image:image-20221130104310-9.png||height="531" width="729"]]
1701
1702
1703 === 6.7.5 Example – Test CMD command sets. ===
1704
1705
1706 Run (% style="color:blue" %)**AT+SENSORVALUE=1**(%%) to test the CMD commands set in RS485-LN.
1707
1708
1709 (% style="color:blue" %)**Serial port tool:**
1710
1711 [[image:image-20221130104310-10.png||height="339" width="844"]]
1712
1713
1714 (% style="color:blue" %)**ModRSsim2:**
1715
1716 [[image:image-20221130104310-11.png||height="281" width="962"]]
1717
1718
1719 === 6.7.6 Test with PC ===
1720
1721
1722 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.
1723
1724
1725 Or User can send the working commands set in PC serial tool to Dragino Support to check what should be configured in RS485-LN.
1726
1727 (% style="color:blue" %)**Connection method：**
1728
1729 [[image:image-20221130104310-12.png]]
1730
1731
1732 (% style="color:blue" %)**Link situation:**
1733
1734 [[image:image-20221130104310-13.png||height="458" width="486"]]
1735
1736
1737 [[image:image-20221130104310-14.png||height="371" width="823"]]
1738
1739
1740 == 6.8 Where to get the decoder for RS485-LN? ==
1741
1742
1743 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)
1744
1745
1746 = 7. Trouble Shooting =
1747
1748 == 7.1 Downlink doesn't work, how to solve it? ==
1749
1750
1751 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1752
1753
1754 == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1755
1756
1757 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1758
1759
1760 = 8. Order Info =
1761
1762
1763 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1764
1765 (% style="color:blue" %)**XXX:**
1766
1767 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1768 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1769 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1770 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1771 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1772 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1773 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1774 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1775 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1776 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1777
1778 = 9. Packing Info =
1779
1780
1781 **Package Includes**:
1782
1783 * RS485-LN x 1
1784 * Stick Antenna for LoRa RF part x 1
1785 * Program cable x 1
1786
1787 **Dimension and weight**:
1788
1789 * Device Size: 13.5 x 7 x 3 cm
1790 * Device Weight: 105g
1791 * Package Size / pcs : 14.5 x 8 x 5 cm
1792 * Weight / pcs : 170g
1793
1794 = 10. FCC Caution for RS485LN-US915 =
1795
1796
1797 (((
1798 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1799 )))
1800
1801 (((
1802 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.
1803 )))
1804
1805 (((
1806
1807 )))
1808
1809 (((
1810 (% style="color:red" %)**IMPORTANT NOTE:**
1811 )))
1812
1813 (((
1814 (% 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:
1815 )))
1816
1817 (((
1818 —Reorient or relocate the receiving antenna.
1819 )))
1820
1821 (((
1822 —Increase the separation between the equipment and receiver.
1823 )))
1824
1825 (((
1826 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1827 )))
1828
1829 (((
1830 —Consult the dealer or an experienced radio/TV technician for help.
1831 )))
1832
1833 (((
1834
1835 )))
1836
1837 (((
1838 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1839 )))
1840
1841 (((
1842 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.
1843 )))
1844
1845
1846 = 11. Support =
1847
1848
1849 * (((
1850 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.
1851 )))
1852 * (((
1853 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]].
1854
1855
1856
1857 )))

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