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Version 76.1 by Edwin Chen on 2022/10/06 15:44
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6 (% 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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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
34 == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
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41 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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47 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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53 (% 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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59 (% 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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63 (% 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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70 (% 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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73
74 == 1.2 Specifications ==
75
76
77 (% style="color:#037691" %)**Hardware System:**
78
79 * STM32L072CZT6 MCU
80 * SX1276/78 Wireless Chip 
81 * Power Consumption (exclude RS485 device):
82 ** Idle: 32mA@12v
83 ** 20dB Transmit: 65mA@12v
84
85 (% style="color:#037691" %)**Interface for Model:**
86
87 * RS485
88 * Power Input 7~~ 24V DC. 
89
90 (% style="color:#037691" %)**LoRa Spec:**
91
92 * Frequency Range:
93 ** Band 1 (HF): 862 ~~ 1020 Mhz
94 ** Band 2 (LF): 410 ~~ 528 Mhz
95 * 168 dB maximum link budget.
96 * +20 dBm - 100 mW constant RF output vs.
97 * +14 dBm high efficiency PA.
98 * Programmable bit rate up to 300 kbps.
99 * High sensitivity: down to -148 dBm.
100 * Bullet-proof front end: IIP3 = -12.5 dBm.
101 * Excellent blocking immunity.
102 * Low RX current of 10.3 mA, 200 nA register retention.
103 * Fully integrated synthesizer with a resolution of 61 Hz.
104 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
105 * Built-in bit synchronizer for clock recovery.
106 * Preamble detection.
107 * 127 dB Dynamic Range RSSI.
108 * Automatic RF Sense and CAD with ultra-fast AFC.
109 * Packet engine up to 256 bytes with CRC
110
111
112 == 1.3 Features ==
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114
115 * LoRaWAN Class A & Class C protocol (default Class C)
116 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864/MA869
117 * AT Commands to change parameters
118 * Remote configure parameters via LoRa Downlink
119 * Firmware upgradable via program port
120 * Support multiply RS485 devices by flexible rules
121 * Support Modbus protocol
122 * Support Interrupt uplink (Since hardware version v1.2)
123
124
125 == 1.4 Applications ==
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127
128 * Smart Buildings & Home Automation
129 * Logistics and Supply Chain Management
130 * Smart Metering
131 * Smart Agriculture
132 * Smart Cities
133 * Smart Factory
134
135
136 == 1.5 Firmware Change log ==
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139 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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142
143 == 1.6 Hardware Change log ==
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149 v1.2: Add External Interrupt Pin.
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153 v1.0: Release
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160
161 = 2. Power ON Device =
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165 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
166
167 * Power Source VIN to RS485-LN VIN+
168 * Power Source GND to RS485-LN VIN-
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171 Once there is power, the RS485-LN will be on.
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174 (% aria-label="1653268091319-405.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268091319-405.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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179
180 = 3. Operation Mode =
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182
183 == 3.1 How it works? ==
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186 (((
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188 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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194
195 == 3.2 Example to join LoRaWAN network ==
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198 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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201 (% aria-label="1653268155545-638.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268155545-638.png||data-widget="image" height="334" 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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206 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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210 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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215 (% aria-label="1653268227651-549.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268227651-549.png||data-widget="image" height="592" width="720"]](% 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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219 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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225 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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229 Each RS485-LN is shipped with a sticker with unique device EUI:
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233 (% aria-label="1652953462722-299.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953462722-299.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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238 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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244 **Add APP EUI in the application.**
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248 (% aria-label="image-20220519174512-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-1.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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250 (% aria-label="image-20220519174512-2.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-2.png||data-widget="image" height="323" width="720"]](% 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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252 (% 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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254 (% aria-label="image-20220519174512-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-4.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
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257 (% title="Click and drag to resize" %)​
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259 You can also choose to create the device manually.
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261 (% 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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265 **Add APP KEY and DEV EUI**
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267 (% 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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272 (% 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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277 (% 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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280
281 == 3.3 Configure Commands to read data ==
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284 (((
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287 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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295 (% 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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302
303 === 3.3.1 Configure UART settings for RS485 or TTL communication ===
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306 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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309 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
310 |=(% style="width: 110px;" %)(((
311 **AT Commands**
312 )))|=(% style="width: 190px;" %)(((
313 **Description**
314 )))|=(% style="width: 190px;" %)(((
315 **Example**
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317 |(% style="width:110px" %)(((
318 AT+BAUDR
319 )))|(% style="width:190px" %)(((
320 Set the baud rate (for RS485 connection). Default Value is: 9600.
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323 AT+BAUDR=9600
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327 Options: (1200,2400,4800,14400,19200,115200)
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330 |(% style="width:110px" %)(((
331 AT+PARITY
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333 Set UART parity (for RS485 connection)
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336 AT+PARITY=0
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340 Option: 0: no parity, 1: odd parity, 2: even parity
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343 |(% style="width:110px" %)(((
344 AT+STOPBIT
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347 Set serial stopbit (for RS485 connection)
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355 AT+STOPBIT=0 for 1bit
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359 AT+STOPBIT=1 for 1.5 bit
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363 AT+STOPBIT=2 for 2 bits
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366
367
368 === 3.3.2 Configure sensors ===
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373 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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379 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
380 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
381 |AT+CFGDEV|(% style="width:110px" %)(((
382 (((
383 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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385
386 (((
387 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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390 (((
391 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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393 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
394
395
396 === 3.3.3 Configure read commands for each sampling ===
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399 (((
400 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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402 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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404 This section describes how to achieve above goals.
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406 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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409 (% style="color:#037691" %)**Each RS485 commands include two parts:**
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412 ~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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414 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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416 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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419 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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421 Below are examples for the how above AT Commands works.
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423
424 (% 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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426 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
427 |(% style="width:496px" %)(((
428 (% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
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430 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
431
432 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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434
435 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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437 In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
438
439
440 (% 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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442 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
443 |(% style="width:510px" %)(((
444 **AT+DATACUTx=a,b,c**
445
446 * **a: length for the return of AT+COMMAND**
447 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
448 * **c: define the position for valid value.  **
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450
451 **Examples:**
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453
454 * (% style="color:#037691" %)**Grab bytes**
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456 (% 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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459
460 * (% style="color:#037691" %)**Grab a section**
461
462 (% 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" %)​
463
464
465
466 * (% style="color:#037691" %)**Grab different sections**
467
468 (% 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" %)​
469
470
471
472 )))
473
474 === 3.3.4 Compose the uplink payload ===
475
476
477 (((
478 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.**
479
480
481 )))
482
483 (((
484 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
485
486
487 )))
488
489 (((
490 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
491 )))
492
493 (((
494 Final Payload is (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
495 )))
496
497 (((
498 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
499
500
501 )))
502
503 [[image:image-20220929111027-1.png||height="509" width="685"]](% title="Click and drag to resize" %)​
504
505
506 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
507
508
509 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
510
511 Final Payload is (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
512
513
514 1. PAYVER: Defined by AT+PAYVER
515 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
516 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
517 1. 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
518
519
520 (% 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" %)​
521
522
523 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
524
525 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
526
527 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
528
529 DATA3=the rest of Valid value of RETURN10= **30**
530
531
532 (% 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:**
533
534
535 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
536
537 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
538
539 * For US915 band, max 11 bytes for each uplink.
540
541 ~* For all other bands: max 51 bytes for each uplink.
542
543
544 (% style="color:red" %)** When AT+DATAUP=1, the maximum number of segments is 15, and the maximum total number of bytes is 1500;**
545
546 (% 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)**
547
548
549
550 Below are the uplink payloads:
551
552
553 (% 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" %)​
554
555
556
557 === 3.3.5 Uplink on demand ===
558
559
560 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.
561
562 (% style="color:blue" %)**Downlink control command:**
563
564 (% style="color:#4472c4" %)** 0x08 command**(%%): Poll an uplink with current command set in RS485-LN.
565
566 (% style="color:#4472c4" %)** 0xA8 command**(%%): Send a command to RS485-LN and uplink the output from sensors.
567
568
569
570 === 3.3.6 Uplink on Interrupt ===
571
572
573 RS485-LN support external Interrupt uplink since hardware v1.2 release.
574
575
576 (% 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" %)​
577
578 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.
579
580
581
582 == 3.4 Uplink Payload ==
583
584
585 (% aria-label="image-20220606110929-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220606110929-1.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"]]
586
587 (% title="Click and drag to resize" %)​
588
589 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
590
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
618 === 3.5.1 Common Commands ===
619
620
621 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]]
622
623
624
625 === 3.5.2 Downlink Response(Since firmware v1.4) ===
626
627
628 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.
629
630
631 (% 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"]]
632
633 (% title="Click and drag to resize" %)​
634
635 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)
636
637
638
639 === 3.5.3 Sensor related commands ===
640
641
642
643
644 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
645
646
647 (((
648 This command is used to configure the RS485 devices; they won't be used during sampling.
649 )))
650
651 (((
652 * (% style="color:#037691" %)**AT Command**
653
654 (((
655 (% 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
656 )))
657 )))
658
659 (((
660
661 )))
662
663 * (((
664 (% style="color:#037691" %)**Downlink Payload**
665 )))
666
667 (((
668 Format: (% style="color:#4472c4" %)** A8 MM NN XX XX XX XX YY**
669 )))
670
671 (((
672 Where:
673 )))
674
675 * (((
676 MM: 1: add CRC-16/MODBUS ; 0: no CRC
677 )))
678 * (((
679 NN: The length of RS485 command
680 )))
681 * (((
682 XX XX XX XX: RS485 command total NN bytes
683 )))
684 * (((
685 (((
686 YY: How many bytes will be uplink from the return of this RS485 command,
687 )))
688
689 * (((
690 if YY=0, RS485-LN will execute the downlink command without uplink;
691 )))
692 * (((
693 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
694 )))
695 * (((
696 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
697 )))
698 )))
699
700 (((
701
702
703 (% style="color:blue" %)**Example 1:**  (%%) ~-~-> Configure without ask for uplink (YY=0)
704 )))
705
706 (((
707 To connect a Modbus Alarm with below commands.
708 )))
709
710 * (((
711 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.
712 )))
713
714 * (((
715 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.
716 )))
717
718 (((
719
720
721 So if user want to use downlink command to control to RS485 Alarm, he can use:
722 )))
723
724 (((
725 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
726 )))
727
728 (((
729 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
730 )))
731
732 (((
733 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.
734 )))
735
736 (((
737
738 )))
739
740 (((
741 (% style="color:blue" %)**Example 2:**  (%%) ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
742 )))
743
744 (((
745 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
746 )))
747
748 (((
749
750 )))
751
752 (((
753 (((
754 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**
755 )))
756
757
758 )))
759
760 (((
761 (% 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" %)​
762 )))
763
764
765
766
767 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
768
769
770 (((
771 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.
772 )))
773
774 (((
775 * (% style="color:#037691" %)**AT Command:**
776
777 (% style="color:#4472c4" %)** AT+PAYVER:    ** (%%) Set PAYVER field = 1
778
779
780 )))
781
782 * (((
783 (% style="color:#037691" %)**Downlink Payload:**
784 )))
785
786 (((
787 (% style="color:#4472c4" %)** 0xAE 01** (%%) ~-~->  Set PAYVER field =  0x01
788 )))
789
790 (((
791 (% style="color:#4472c4" %)** 0xAE 0F**   (%%) ~-~->  Set PAYVER field =  0x0F
792 )))
793
794
795 **1 )  Add the interrupt flag at the highest bit of the Payver byte, that is, Byte7 of the first byte. (Since v1.4.0)**
796
797
798 [[image:image-20220824145428-2.png||height="168" width="1300"]]
799
800
801
802 **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.**
803
804
805 [[image:image-20220824145428-3.png||height="308" width="1200"]]
806
807
808
809
810 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
811
812
813 (((
814 AT+COMMANDx or AT+DATACUTx
815 )))
816
817 (((
818 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"]].
819 )))
820
821 (((
822
823 )))
824
825 * (((
826 (% style="color:#037691" %)**AT Command:**
827 )))
828
829 (% style="color:#4472c4" %)** AT+COMMANDx:    ** (%%) Configure RS485 read command to sensor.
830
831 (% style="color:#4472c4" %)** AT+DATACUTx:        **(%%) Configure how to handle return from RS485 devices.
832
833
834 * (((
835 (% style="color:#037691" %)**Downlink Payload:**
836 )))
837
838 (((
839 (% style="color:#4472c4" %)** 0xAF**(%%) downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
840
841
842 )))
843
844 (((
845 (% style="color:red" %)**Note : if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
846
847
848 )))
849
850 (((
851 Format: (% style="color:#4472c4" %)** AF MM NN LL XX XX XX XX YY**
852 )))
853
854 (((
855 Where:
856 )))
857
858 * (((
859 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
860 )))
861 * (((
862 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
863 )))
864 * (((
865 LL:  The length of AT+COMMAND or AT+DATACUT command
866 )))
867 * (((
868 XX XX XX XX: AT+COMMAND or AT+DATACUT command
869 )))
870 * (((
871 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.
872 )))
873
874 (((
875
876
877 **Example:**
878 )))
879
880 (((
881 (% 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
882 )))
883
884 (((
885 (% 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**
886 )))
887
888 (((
889 (% 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**
890 )))
891
892
893
894
895 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
896
897
898 (((
899 (% 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]].
900 )))
901
902 (((
903 This command is valid since v1.3 firmware version
904 )))
905
906 (((
907 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.
908 )))
909
910 (((
911
912 )))
913
914 (((
915 **Example:**
916 )))
917
918 * (((
919 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
920 )))
921 * (((
922 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.
923 )))
924 * (((
925 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.
926
927
928 )))
929
930 (% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]]
931
932 (% title="Click and drag to resize" %)​
933
934 (% 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" %)​
935
936
937
938
939 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
940
941
942 (((
943 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.
944 )))
945
946 (((
947 Default value: 0, range:  0 ~~ 65 seconds
948 )))
949
950 (((
951 * (% style="color:#037691" %)** AT Command:**
952
953 (% style="color:#4472c4" %)** AT+CMDDLaa=hex(bb cc)*1000**
954 )))
955
956 (((
957
958
959 **Example:**
960 )))
961
962 (((
963 (% style="color:#4472c4" %)** AT+CMDDL1=1000** (%%)to send the open time to 1000ms
964 )))
965
966 (((
967
968 )))
969
970 * (((
971 (% style="color:#037691" %)** Downlink Payload:**
972 )))
973
974 (((
975 (% style="color:#4472c4" %)** 0x AA aa bb cc**(%%) Same as: AT+CMDDLaa=hex(bb cc)*1000
976 )))
977
978 (((
979
980
981 **Example:**
982 )))
983
984 (((
985 **0xAA 01 00 01**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
986 )))
987
988
989
990
991 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
992
993
994 (((
995 Define to use one uplink or multiple uplinks for the sampling.
996 )))
997
998 (((
999 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
1000
1001
1002 )))
1003
1004 (((
1005 * (% style="color:#037691" %)** AT Command:**
1006
1007 (% style="color:#4472c4" %)** AT+DATAUP=0**
1008
1009 (% style="color:#4472c4" %)** AT+DATAUP=1**
1010
1011
1012 )))
1013
1014 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1015
1016 Each uplink is sent to the server at 20-second intervals when segmented.
1017
1018
1019 * (((
1020 (% style="color:#037691" %)** Downlink Payload:**
1021 )))
1022
1023 (% style="color:#4472c4" %)** 0xAD 00** (%%) **~-~->** Same as AT+DATAUP=0
1024
1025 (% 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.
1026
1027
1028 * (((
1029 (% style="color:#037691" %)** AT Command:**
1030 )))
1031
1032 (% style="color:#4472c4" %)** AT+DATAUP=1,Timeout**
1033
1034
1035 * (((
1036 (% style="color:#037691" %)** Downlink Payload:**
1037 )))
1038
1039 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1040
1041 Each uplink is sent to the server at 20-second intervals when segmented.
1042
1043
1044
1045
1046 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
1047
1048
1049 (((
1050 Ask device to send an uplink immediately.
1051 )))
1052
1053 * (((
1054 (% style="color:#037691" %)** AT Command:**
1055 )))
1056
1057 (((
1058 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
1059 )))
1060
1061 (((
1062
1063 )))
1064
1065 * (((
1066 (% style="color:#037691" %)** Downlink Payload:**
1067 )))
1068
1069 (((
1070 (% style="color:#4472c4" %)** 0x08 FF**(%%), RS485-LN will immediately send an uplink.
1071 )))
1072
1073
1074
1075
1076 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
1077
1078
1079 (((
1080 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1081
1082
1083 )))
1084
1085 * (((
1086 (% style="color:#037691" %)** AT Command:**
1087 )))
1088
1089 (((
1090 (% style="color:#4472c4" %)** AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase
1091 )))
1092
1093 (((
1094
1095
1096 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1097 )))
1098
1099 (((
1100 Example screen shot after clear all RS485 commands. 
1101 )))
1102
1103 (((
1104
1105 )))
1106
1107 (((
1108 The uplink screen shot is:
1109 )))
1110
1111 (% 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" %)​
1112
1113
1114 * (((
1115 (% style="color:#037691" %)** Downlink Payload:**
1116 )))
1117
1118 (((
1119 (% style="color:#4472c4" %)** 0x09 aa bb** (%%) same as AT+CMDEAR=aa,bb
1120 )))
1121
1122
1123
1124
1125 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1126
1127
1128 (((
1129 Set the Rs485 serial communication parameters:
1130 )))
1131
1132 (((
1133 (% style="color:#037691" %)**AT Command:**
1134 )))
1135
1136 (((
1137 * Set Baud Rate
1138 )))
1139
1140 (% 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
1141
1142
1143 (((
1144 * Set UART Parity
1145 )))
1146
1147 (% style="color:#4472c4" %)** AT+PARITY=0** (%%) ~/~/  Option: 0: no parity, 1: odd parity, 2: even parity
1148
1149
1150 (((
1151 * Set STOPBIT
1152 )))
1153
1154 (% style="color:#4472c4" %)** AT+STOPBIT=0** (%%) ~/~/  Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1155
1156
1157 (((
1158 (% style="color:#037691" %)**Downlink Payload:**
1159 )))
1160
1161 (((
1162 (% style="color:#4472c4" %)** A7 01 aa bb**:   (%%) Same  AT+BAUDR=hex(aa bb)*100
1163 )))
1164
1165 (((
1166 **Example:**
1167 )))
1168
1169 * (((
1170 A7 01 00 60  same as AT+BAUDR=9600
1171 )))
1172 * (((
1173 A7 01 04 80  same as AT+BAUDR=115200
1174 )))
1175
1176 (((
1177 * A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1178 )))
1179
1180 (((
1181 * A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1182 )))
1183
1184
1185
1186
1187
1188 ==== (% style="color:blue" %)**Encrypted payload**(%%) ====
1189
1190 (((
1191
1192 )))
1193
1194 * (((
1195 (% style="color:#037691" %)** AT Command:**
1196 )))
1197
1198 (% style="color:#4472c4" %)** AT+DECRYPT=1  ** (%%) ~/~/ The payload is uploaded without encryption
1199
1200 (% style="color:#4472c4" %)** AT+DECRYPT=0  ** (%%) ~/~/ Encrypt when uploading payload (default)
1201
1202
1203
1204
1205 ==== (% style="color:blue" %)**Get sensor value**(%%) ====
1206
1207
1208 * (((
1209 (% style="color:#037691" %)** AT Command:**
1210 )))
1211
1212 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=0  **(%%) ~/~/ The serial port gets the reading of the current sensor
1213
1214 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=1  **(%%) ~/~/ The serial port gets the current sensor reading and uploads it.
1215
1216
1217
1218
1219 ==== (% style="color:blue" %)**Resets the downlink packet count**(%%) ====
1220
1221
1222 * (((
1223 (% style="color:#037691" %)** AT Command:**
1224 )))
1225
1226 (% 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)
1227
1228 (% 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.
1229
1230
1231
1232
1233 ==== (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches**(%%) ====
1234
1235
1236 * (((
1237 (% style="color:#037691" %)** AT Command:**
1238 )))
1239
1240 (% 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)
1241
1242 (% 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.
1243
1244
1245 * (((
1246 (% style="color:#037691" %)** Downlink Payload:**
1247 )))
1248
1249 (% style="color:#4472c4" %)** 0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1250
1251
1252
1253
1254 ==== (% style="color:blue" %)** Copy downlink to uplink **(%%) ====
1255
1256
1257 * (((
1258 (% style="color:#037691" %)** AT Command:**
1259 )))
1260
1261 (% 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.
1262
1263
1264 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.
1265
1266
1267 [[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"]]
1268
1269
1270
1271 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1272
1273
1274 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]
1275
1276
1277 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1278
1279
1280
1281
1282 ==== (% style="color:blue" %)**Query version number and frequency band 、TDC**(%%) ====
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
1300 ==== (% style="color:blue" %)** Monitor RS485 communication of other devices**(%%) ====
1301
1302
1303 * (((
1304 (% style="color:#037691" %)** AT Command:**
1305 )))
1306
1307 (% 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.
1308
1309 (% 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.
1310
1311 (% style="color:#4472c4" %)**AT+RXMODE=0,0  ** (%%) ~/~/  Disable this mode (default)
1312
1313
1314 * (((
1315 (% style="color:#037691" %)**Downlink Payload:**
1316 )))
1317
1318 (% style="color:#4472c4" %)** A6 aa bb bb               ** (%%) ~/~/same as AT+RXMODE=aa,bb
1319
1320 [[image:image-20220824144240-1.png]]
1321
1322
1323
1324 == 3.6 Listening mode for RS485 network ==
1325
1326
1327 (((
1328 This feature support since firmware v1.4
1329 )))
1330
1331 (((
1332 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.
1333
1334
1335 )))
1336
1337 (% 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"]]
1338
1339 (% title="Click and drag to resize" %)​
1340
1341 (((
1342 To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
1343 )))
1344
1345 (((
1346
1347 )))
1348
1349 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1350 |=(% style="width: 100px;" %)(((
1351 **Command example**
1352 )))|=(% style="width: 400px;" %)(((
1353 **Function**
1354 )))
1355 |(% style="width:100px" %)(((
1356 AT+RXMODE=1,10
1357 )))|(% style="width:400px" %)(((
1358 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.
1359 )))
1360 |(% style="width:100px" %)(((
1361 AT+RXMODE=2,500
1362 )))|(% style="width:400px" %)(((
1363 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
1364 )))
1365 |(% style="width:100px" %)(((
1366 AT+RXMODE=0,0
1367 )))|(% style="width:400px" %)(((
1368 Disable listening mode. This is the default settings.
1369 )))
1370 |(% style="width:100px" %)(((
1371
1372 )))|(% style="width:400px" %)(((
1373 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1374 )))
1375
1376 (((
1377
1378
1379 (% style="color:#037691" %)**Downlink Command:**
1380 )))
1381
1382 (((
1383 (% style="color:#4472c4" %)** 0xA6 aa bb cc **(%%) same as AT+RXMODE=aa,(bb<<8 | cc)
1384 )))
1385
1386 (((
1387
1388 )))
1389
1390 (((
1391 **Example**:
1392 )))
1393
1394 (((
1395 The RS485-LN is set to AT+RXMODE=2,1000
1396 )))
1397
1398 (((
1399 There is a two Modbus commands in the RS485 network as below:
1400 )))
1401
1402 (((
1403 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1404 )))
1405
1406 (((
1407 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1408 )))
1409
1410 (((
1411 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
1412
1413
1414 )))
1415
1416 (((
1417 (% 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" %)​
1418 )))
1419
1420 (((
1421
1422 )))
1423
1424 (((
1425 (((
1426 (% 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.**
1427 )))
1428 )))
1429
1430
1431
1432 == 3.7 Buttons ==
1433
1434
1435 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1436 |=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1437 |(% 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**
1438 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1439 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1440
1441
1442 == 3.8 LEDs ==
1443
1444
1445 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1446 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1447 |**PWR**|Always on if there is power
1448 |**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.
1449
1450
1451 = 4. Case Study =
1452
1453
1454 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]]
1455
1456
1457
1458 = 5. Use AT Command =
1459
1460
1461 == 5.1 Access AT Command ==
1462
1463
1464 (((
1465 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.
1466
1467
1468 )))
1469
1470 (% 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" %)​
1471
1472
1473
1474 (((
1475 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:
1476
1477
1478 )))
1479
1480 (% 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" %)​
1481
1482
1483 (((
1484 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/]]
1485 )))
1486
1487
1488
1489 == 5.2 Common AT Command Sequence ==
1490
1491
1492 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1493
1494
1495 If device has not joined network yet:
1496
1497 * (% style="color:#037691" %)**AT+FDR**
1498 * (% style="color:#037691" %)**AT+NJM=0**
1499 * (% style="color:#037691" %)**ATZ**
1500
1501 (((
1502
1503
1504 If device already joined network:
1505
1506 * (% style="color:#037691" %)**AT+NJM=0**
1507 * (% style="color:#037691" %)**ATZ**
1508
1509
1510 )))
1511
1512
1513
1514 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1515
1516
1517 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1518
1519 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1520
1521 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1522
1523 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1524
1525 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1526
1527 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1528
1529 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1530
1531 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1532
1533 (% 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.
1534
1535 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1536
1537
1538 (% style="color:red" %)**Note:**
1539
1540 (((
1541 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1542 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1543 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.
1544 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
1545
1546
1547 )))
1548
1549 (% 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" %)​
1550
1551
1552
1553 = 6. FAQ =
1554
1555
1556 == 6.1 How to upgrade the image? ==
1557
1558
1559 (((
1560 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1561 )))
1562
1563 * (((
1564 Support new features
1565 )))
1566 * (((
1567 For bug fix
1568 )))
1569 * (((
1570 Change LoRaWAN bands.
1571 )))
1572
1573 (((
1574 Below shows the hardware connection for how to upload an image to RS485-LN:
1575 )))
1576
1577 (% 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"]]
1578
1579 (% title="Click and drag to resize" %)​
1580
1581 (((
1582 (% 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]].
1583
1584
1585 )))
1586
1587 (((
1588 (% 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]].
1589
1590
1591 )))
1592
1593 (((
1594 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1595
1596
1597 )))
1598
1599 (((
1600 (((
1601 (((
1602 (% 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.
1603 )))
1604 )))
1605 )))
1606
1607
1608 (% 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" %)​
1609
1610
1611 (% 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" %)​
1612
1613
1614 (% 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" %)​
1615
1616
1617 (% 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:**
1618
1619 (% 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" %)​
1620
1621
1622
1623 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1624
1625
1626 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1627
1628
1629
1630 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1631
1632
1633 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"]].
1634
1635
1636
1637 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1638
1639
1640 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1641
1642 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1643
1644
1645
1646 == 6.5 Can i use point to point communication for RS485-LN? ==
1647
1648
1649 Yes, please refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1650
1651
1652
1653 == 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1654
1655
1656 [[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/]]
1657
1658
1659
1660 = 7. Trouble Shooting =
1661
1662
1663 == 7.1 Downlink doesn't work, how to solve it? ==
1664
1665
1666 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1667
1668
1669
1670 == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1671
1672
1673 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1674
1675
1676
1677 = 8. Order Info =
1678
1679
1680 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1681
1682 (% style="color:blue" %)**XXX:**
1683
1684 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1685 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1686 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1687 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1688 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1689 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1690 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1691 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1692 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1693 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1694
1695
1696 = 9.Packing Info =
1697
1698
1699 **Package Includes**:
1700
1701 * RS485-LN x 1
1702 * Stick Antenna for LoRa RF part x 1
1703 * Program cable x 1
1704
1705 **Dimension and weight**:
1706
1707 * Device Size: 13.5 x 7 x 3 cm
1708 * Device Weight: 105g
1709 * Package Size / pcs : 14.5 x 8 x 5 cm
1710 * Weight / pcs : 170g
1711
1712
1713 = 10. FCC Caution for RS485LN-US915 =
1714
1715
1716 (((
1717 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1718 )))
1719
1720 (((
1721 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.
1722 )))
1723
1724 (((
1725
1726 )))
1727
1728 (((
1729 (% style="color:red" %)**IMPORTANT NOTE:**
1730 )))
1731
1732 (((
1733 (% 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:
1734 )))
1735
1736 (((
1737 —Reorient or relocate the receiving antenna.
1738 )))
1739
1740 (((
1741 —Increase the separation between the equipment and receiver.
1742 )))
1743
1744 (((
1745 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1746 )))
1747
1748 (((
1749 —Consult the dealer or an experienced radio/TV technician for help.
1750 )))
1751
1752 (((
1753
1754 )))
1755
1756 (((
1757 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1758 )))
1759
1760 (((
1761 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.
1762 )))
1763
1764
1765
1766 = 11. Support =
1767
1768
1769 * (((
1770 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.
1771 )))
1772 * (((
1773 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]].
1774
1775
1776
1777 )))