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Version 78.1 by Bei Jinggeng on 2022/10/09 14:27
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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 == 1.3 Features ==
112
113
114 * LoRaWAN Class A & Class C protocol (default Class C)
115 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864/MA869
116 * AT Commands to change parameters
117 * Remote configure parameters via LoRa Downlink
118 * Firmware upgradable via program port
119 * Support multiply RS485 devices by flexible rules
120 * Support Modbus protocol
121 * Support Interrupt uplink (Since hardware version v1.2)
122
123 == 1.4 Applications ==
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125
126 * Smart Buildings & Home Automation
127 * Logistics and Supply Chain Management
128 * Smart Metering
129 * Smart Agriculture
130 * Smart Cities
131 * Smart Factory
132
133 == 1.5 Firmware Change log ==
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135
136 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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139
140 == 1.6 Hardware Change log ==
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146 v1.2: Add External Interrupt Pin.
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150 v1.0: Release
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157
158 = 2. Power ON Device =
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162 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
163
164 * Power Source VIN to RS485-LN VIN+
165 * Power Source GND to RS485-LN VIN-
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168 Once there is power, the RS485-LN will be on.
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171 (% 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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176
177 = 3. Operation Mode =
178
179
180 == 3.1 How it works? ==
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185 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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191
192 == 3.2 Example to join LoRaWAN network ==
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195 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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198 (% 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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203 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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207 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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212 (% 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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216 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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222 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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226 Each RS485-LN is shipped with a sticker with unique device EUI:
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230 (% 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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235 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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241 **Add APP EUI in the application.**
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245 (% 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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247 (% 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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249 (% 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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251 (% 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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254 (% title="Click and drag to resize" %)​
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256 You can also choose to create the device manually.
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258 (% 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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262 **Add APP KEY and DEV EUI**
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264 (% 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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269 (% 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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274 (% 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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277
278 == 3.3 Configure Commands to read data ==
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281 (((
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283 (((
284 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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292 (% 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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299
300 === 3.3.1 Configure UART settings for RS485 or TTL communication ===
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302
303 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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306 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
307 |=(% style="width: 110px;" %)(((
308 **AT Commands**
309 )))|=(% style="width: 190px;" %)(((
310 **Description**
311 )))|=(% style="width: 190px;" %)(((
312 **Example**
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314 |(% style="width:110px" %)(((
315 AT+BAUDR
316 )))|(% style="width:190px" %)(((
317 Set the baud rate (for RS485 connection). Default Value is: 9600.
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319 (((
320 AT+BAUDR=9600
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324 Options: (1200,2400,4800,14400,19200,115200)
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327 |(% style="width:110px" %)(((
328 AT+PARITY
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330 Set UART parity (for RS485 connection)
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333 AT+PARITY=0
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337 Option: 0: no parity, 1: odd parity, 2: even parity
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340 |(% style="width:110px" %)(((
341 AT+STOPBIT
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344 Set serial stopbit (for RS485 connection)
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352 AT+STOPBIT=0 for 1bit
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356 AT+STOPBIT=1 for 1.5 bit
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360 AT+STOPBIT=2 for 2 bits
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363
364 === 3.3.2 Configure sensors ===
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369 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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375 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
376 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
377 |AT+CFGDEV|(% style="width:110px" %)(((
378 (((
379 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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382 (((
383 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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386 (((
387 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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389 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
390
391 === 3.3.3 Configure read commands for each sampling ===
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393
394 (((
395 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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397 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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399 This section describes how to achieve above goals.
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401 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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403
404 (% style="color:#037691" %)**Each RS485 commands include two parts:**
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406
407 ~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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409 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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411 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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414 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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416 Below are examples for the how above AT Commands works.
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418
419 (% 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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421 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
422 |(% style="width:496px" %)(((
423 (% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
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425 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
426
427 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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429
430 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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432 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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434
435 (% 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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437 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
438 |(% style="width:510px" %)(((
439 **AT+DATACUTx=a,b,c**
440
441 * **a: length for the return of AT+COMMAND**
442 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
443 * **c: define the position for valid value.  **
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445
446 **Examples:**
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448
449 * (% style="color:#037691" %)**Grab bytes**
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451 (% 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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455 * (% style="color:#037691" %)**Grab a section**
456
457 (% 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" %)​
458
459
460
461 * (% style="color:#037691" %)**Grab different sections**
462
463 (% 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" %)​
464
465
466
467 )))
468
469 === 3.3.4 Compose the uplink payload ===
470
471
472 (((
473 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.**
474
475
476 )))
477
478 (((
479 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
480
481
482 )))
483
484 (((
485 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
486 )))
487
488 (((
489 Final Payload is (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
490 )))
491
492 (((
493 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
494
495
496 )))
497
498 [[image:image-20220929111027-1.png||height="509" width="685"]](% title="Click and drag to resize" %)​
499
500
501 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
502
503
504 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
505
506 Final Payload is (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
507
508
509 1. PAYVER: Defined by AT+PAYVER
510 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
511 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
512 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
513
514 (% 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" %)​
515
516
517 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
518
519 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
520
521 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
522
523 DATA3=the rest of Valid value of RETURN10= **30**
524
525
526 (% 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:**
527
528
529 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
530
531 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
532
533 * For US915 band, max 11 bytes for each uplink.
534
535 ~* For all other bands: max 51 bytes for each uplink.
536
537
538 (% style="color:red" %)** When AT+DATAUP=1, the maximum number of segments is 15, and the maximum total number of bytes is 1500;**
539
540 (% 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)**
541
542
543
544 Below are the uplink payloads:
545
546
547 (% 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" %)​
548
549
550
551 === 3.3.5 Uplink on demand ===
552
553
554 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.
555
556 (% style="color:blue" %)**Downlink control command:**
557
558 (% style="color:#4472c4" %)** 0x08 command**(%%): Poll an uplink with current command set in RS485-LN.
559
560 (% style="color:#4472c4" %)** 0xA8 command**(%%): Send a command to RS485-LN and uplink the output from sensors.
561
562
563
564 === 3.3.6 Uplink on Interrupt ===
565
566
567 RS485-LN support external Interrupt uplink since hardware v1.2 release.
568
569
570 (% aria-label="1654157342174-798.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157342174-798.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
571
572 Connect the Interrupt pin to RS485-LN INT port and connect the GND pin to V- port. When there is a high voltage (Max 24v) on INT pin. Device will send an uplink packet.
573
574
575
576 == 3.4 Uplink Payload ==
577
578 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:800px" %)
579 |(((
580 Size(bytes)
581 )))|1|(((
582 Length depends on the return from the commands
583 )))
584 |(((
585 Value
586 )))|(((
587 PAYLOAD_VER
588 )))|(((
589 If the valid payload is too long and exceed the maximum
590
591 support payload length in server, server will show payload not
592
593 provided in the LoRaWAN server.
594 )))
595
596 (% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
597
598 (% title="Click and drag to resize" %)​
599
600 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
601
602
603
604 == 3.5 Configure RS485-LN via AT or Downlink ==
605
606
607 (((
608 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
609 )))
610
611 (((
612 There are two kinds of Commands:
613 )))
614
615 * (((
616 (% 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]]
617 )))
618
619 * (((
620 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
621 )))
622
623 (((
624
625 )))
626
627
628
629 === 3.5.1 Common Commands ===
630
631
632 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]]
633
634
635
636 === 3.5.2 Downlink Response(Since firmware v1.4) ===
637
638
639 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.
640
641
642 (% 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"]]
643
644 (% title="Click and drag to resize" %)​
645
646 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)
647
648
649
650 === 3.5.3 Sensor related commands ===
651
652
653
654
655 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
656
657
658 (((
659 This command is used to configure the RS485 devices; they won't be used during sampling. Max Length of AT+CFGDEV is **40 bytes**.
660 )))
661
662 (((
663 * (% style="color:#037691" %)**AT Command**
664
665 (((
666 (% 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
667 )))
668 )))
669
670 (((
671
672 )))
673
674 * (((
675 (% style="color:#037691" %)**Downlink Payload**
676 )))
677
678 (((
679 Format: (% style="color:#4472c4" %)** A8 MM NN XX XX XX XX YY**
680 )))
681
682 (((
683 Where:
684 )))
685
686 * (((
687 MM: 1: add CRC-16/MODBUS ; 0: no CRC
688 )))
689 * (((
690 NN: The length of RS485 command
691 )))
692 * (((
693 XX XX XX XX: RS485 command total NN bytes
694 )))
695 * (((
696 (((
697 YY: How many bytes will be uplink from the return of this RS485 command,
698 )))
699
700 * (((
701 if YY=0, RS485-LN will execute the downlink command without uplink;
702 )))
703 * (((
704 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
705 )))
706 * (((
707 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
708 )))
709 )))
710
711 (((
712
713
714 (% style="color:blue" %)**Example 1:**  (%%) ~-~-> Configure without ask for uplink (YY=0)
715 )))
716
717 (((
718 To connect a Modbus Alarm with below commands.
719 )))
720
721 * (((
722 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.
723 )))
724
725 * (((
726 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.
727 )))
728
729 (((
730
731
732 So if user want to use downlink command to control to RS485 Alarm, he can use:
733 )))
734
735 (((
736 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
737 )))
738
739 (((
740 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
741 )))
742
743 (((
744 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.
745 )))
746
747 (((
748
749 )))
750
751 (((
752 (% style="color:blue" %)**Example 2:**  (%%) ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
753 )))
754
755 (((
756 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
757 )))
758
759 (((
760
761 )))
762
763 (((
764 (((
765 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**
766 )))
767
768
769 )))
770
771 (((
772 (% 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" %)​
773 )))
774
775
776
777
778 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
779
780
781 (((
782 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.
783 )))
784
785 (((
786 * (% style="color:#037691" %)**AT Command:**
787
788 (% style="color:#4472c4" %)** AT+PAYVER:    ** (%%) Set PAYVER field = 1
789
790
791 )))
792
793 * (((
794 (% style="color:#037691" %)**Downlink Payload:**
795 )))
796
797 (((
798 (% style="color:#4472c4" %)** 0xAE 01** (%%) ~-~->  Set PAYVER field =  0x01
799 )))
800
801 (((
802 (% style="color:#4472c4" %)** 0xAE 0F**   (%%) ~-~->  Set PAYVER field =  0x0F
803 )))
804
805
806 **1 )  Add the interrupt flag at the highest bit of the Payver byte, that is, Byte7 of the first byte. (Since v1.4.0)**
807
808
809 [[image:image-20220824145428-2.png||height="168" width="1300"]]
810
811
812
813 **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.**
814
815
816 [[image:image-20220824145428-3.png||height="308" width="1200"]]
817
818
819
820
821 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
822
823
824 (((
825 AT+COMMANDx or AT+DATACUTx
826 )))
827
828 (((
829 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"]].
830 )))
831
832 (((
833
834 )))
835
836 * (((
837 (% style="color:#037691" %)**AT Command:**
838 )))
839
840 (% style="color:#4472c4" %)** AT+COMMANDx:    ** (%%) Configure RS485 read command to sensor.
841
842 (% style="color:#4472c4" %)** AT+DATACUTx:        **(%%) Configure how to handle return from RS485 devices.
843
844
845 * (((
846 (% style="color:#037691" %)**Downlink Payload:**
847 )))
848
849 (((
850 (% style="color:#4472c4" %)** 0xAF**(%%) downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
851
852
853 )))
854
855 (((
856 (% style="color:red" %)**Note : if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
857
858
859 )))
860
861 (((
862 Format: (% style="color:#4472c4" %)** AF MM NN LL XX XX XX XX YY**
863 )))
864
865 (((
866 Where:
867 )))
868
869 * (((
870 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
871 )))
872 * (((
873 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
874 )))
875 * (((
876 LL:  The length of AT+COMMAND or AT+DATACUT command
877 )))
878 * (((
879 XX XX XX XX: AT+COMMAND or AT+DATACUT command
880 )))
881 * (((
882 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.
883 )))
884
885 (((
886
887
888 **Example:**
889 )))
890
891 (((
892 (% 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
893 )))
894
895 (((
896 (% 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**
897 )))
898
899 (((
900 (% 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**
901 )))
902
903
904
905
906 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
907
908
909 (((
910 (% 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]].
911 )))
912
913 (((
914 This command is valid since v1.3 firmware version
915 )))
916
917 (((
918 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.
919 )))
920
921 (((
922
923 )))
924
925 (((
926 **Example:**
927 )))
928
929 * (((
930 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
931 )))
932 * (((
933 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.
934 )))
935 * (((
936 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.
937
938
939 )))
940
941 (% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]]
942
943 (% title="Click and drag to resize" %)​
944
945 (% 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" %)​
946
947
948
949
950 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
951
952
953 (((
954 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.
955 )))
956
957 (((
958 Default value: 0, range:  0 ~~ 65 seconds
959 )))
960
961 (((
962 * (% style="color:#037691" %)** AT Command:**
963
964 (% style="color:#4472c4" %)** AT+CMDDLaa=hex(bb cc)*1000**
965 )))
966
967 (((
968
969
970 **Example:**
971 )))
972
973 (((
974 (% style="color:#4472c4" %)** AT+CMDDL1=1000** (%%)to send the open time to 1000ms
975 )))
976
977 (((
978
979 )))
980
981 * (((
982 (% style="color:#037691" %)** Downlink Payload:**
983 )))
984
985 (((
986 (% style="color:#4472c4" %)** 0x AA aa bb cc**(%%) Same as: AT+CMDDLaa=hex(bb cc)*1000
987 )))
988
989 (((
990
991
992 **Example:**
993 )))
994
995 (((
996 **0xAA 01 00 01**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
997 )))
998
999
1000
1001
1002 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
1003
1004
1005 (((
1006 Define to use one uplink or multiple uplinks for the sampling.
1007 )))
1008
1009 (((
1010 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
1011
1012
1013 )))
1014
1015 (((
1016 * (% style="color:#037691" %)** AT Command:**
1017
1018 (% style="color:#4472c4" %)** AT+DATAUP=0**
1019
1020 (% style="color:#4472c4" %)** AT+DATAUP=1**
1021
1022
1023 )))
1024
1025 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1026
1027 Each uplink is sent to the server at 20-second intervals when segmented.
1028
1029
1030 * (((
1031 (% style="color:#037691" %)** Downlink Payload:**
1032 )))
1033
1034 (% style="color:#4472c4" %)** 0xAD 00** (%%) **~-~->** Same as AT+DATAUP=0
1035
1036 (% 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.
1037
1038
1039 * (((
1040 (% style="color:#037691" %)** AT Command:**
1041 )))
1042
1043 (% style="color:#4472c4" %)** AT+DATAUP=1,Timeout**
1044
1045
1046 * (((
1047 (% style="color:#037691" %)** Downlink Payload:**
1048 )))
1049
1050 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1051
1052 Each uplink is sent to the server at 20-second intervals when segmented.
1053
1054
1055
1056
1057 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
1058
1059
1060 (((
1061 Ask device to send an uplink immediately.
1062 )))
1063
1064 * (((
1065 (% style="color:#037691" %)** AT Command:**
1066 )))
1067
1068 (((
1069 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
1070 )))
1071
1072 (((
1073
1074 )))
1075
1076 * (((
1077 (% style="color:#037691" %)** Downlink Payload:**
1078 )))
1079
1080 (((
1081 (% style="color:#4472c4" %)** 0x08 FF**(%%), RS485-LN will immediately send an uplink.
1082 )))
1083
1084
1085
1086
1087 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
1088
1089
1090 (((
1091 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1092
1093
1094 )))
1095
1096 * (((
1097 (% style="color:#037691" %)** AT Command:**
1098 )))
1099
1100 (((
1101 (% style="color:#4472c4" %)** AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase
1102 )))
1103
1104 (((
1105
1106
1107 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1108 )))
1109
1110 (((
1111 Example screen shot after clear all RS485 commands. 
1112 )))
1113
1114 (((
1115
1116 )))
1117
1118 (((
1119 The uplink screen shot is:
1120 )))
1121
1122 (% 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" %)​
1123
1124
1125 * (((
1126 (% style="color:#037691" %)** Downlink Payload:**
1127 )))
1128
1129 (((
1130 (% style="color:#4472c4" %)** 0x09 aa bb** (%%) same as AT+CMDEAR=aa,bb
1131 )))
1132
1133
1134
1135
1136 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1137
1138
1139 (((
1140 Set the Rs485 serial communication parameters:
1141 )))
1142
1143 (((
1144 (% style="color:#037691" %)**AT Command:**
1145 )))
1146
1147 (((
1148 * Set Baud Rate
1149 )))
1150
1151 (% 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
1152
1153
1154 (((
1155 * Set UART Parity
1156 )))
1157
1158 (% style="color:#4472c4" %)** AT+PARITY=0** (%%) ~/~/  Option: 0: no parity, 1: odd parity, 2: even parity
1159
1160
1161 (((
1162 * Set STOPBIT
1163 )))
1164
1165 (% style="color:#4472c4" %)** AT+STOPBIT=0** (%%) ~/~/  Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1166
1167
1168 (((
1169 (% style="color:#037691" %)**Downlink Payload:**
1170 )))
1171
1172 (((
1173 (% style="color:#4472c4" %)** A7 01 aa bb**:   (%%) Same  AT+BAUDR=hex(aa bb)*100
1174 )))
1175
1176 (((
1177 **Example:**
1178 )))
1179
1180 * (((
1181 A7 01 00 60  same as AT+BAUDR=9600
1182 )))
1183 * (((
1184 A7 01 04 80  same as AT+BAUDR=115200
1185 )))
1186
1187 (((
1188 * A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1189 )))
1190
1191 (((
1192 * A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1193 )))
1194
1195
1196 ==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.1)**(%%) ====
1197
1198 * (((
1199 (% style="color:#037691" %)** AT Command:**
1200 )))
1201
1202 **~ AT+DATABIT=7  **~/~/ Set the data bits to 7
1203
1204 **~ AT+DATABIT=8  **~/~/Set the data bits to 8
1205
1206 * (((
1207 (% style="color:#037691" %)**Downlink Payload:**
1208 )))
1209
1210 **~ A7 04 07**: Same as  AT+DATABIT=7
1211
1212 **~ A7 04 08**: Same as  AT+DATABIT=8
1213
1214
1215
1216 ==== (% style="color:blue" %)**Encrypted payload**(%%) ====
1217
1218 (((
1219
1220 )))
1221
1222 * (((
1223 (% style="color:#037691" %)** AT Command:**
1224 )))
1225
1226 (% style="color:#4472c4" %)** AT+DECRYPT=1  ** (%%) ~/~/ The payload is uploaded without encryption
1227
1228 (% style="color:#4472c4" %)** AT+DECRYPT=0  ** (%%) ~/~/ Encrypt when uploading payload (default)
1229
1230
1231
1232
1233 ==== (% style="color:blue" %)**Get sensor value**(%%) ====
1234
1235
1236 * (((
1237 (% style="color:#037691" %)** AT Command:**
1238 )))
1239
1240 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=0  **(%%) ~/~/ The serial port gets the reading of the current sensor
1241
1242 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=1  **(%%) ~/~/ The serial port gets the current sensor reading and uploads it.
1243
1244
1245
1246
1247 ==== (% style="color:blue" %)**Resets the downlink packet count**(%%) ====
1248
1249
1250 * (((
1251 (% style="color:#037691" %)** AT Command:**
1252 )))
1253
1254 (% 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)
1255
1256 (% 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.
1257
1258
1259
1260
1261 ==== (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches**(%%) ====
1262
1263
1264 * (((
1265 (% style="color:#037691" %)** AT Command:**
1266 )))
1267
1268 (% 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)
1269
1270 (% 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.
1271
1272
1273 * (((
1274 (% style="color:#037691" %)** Downlink Payload:**
1275 )))
1276
1277 (% style="color:#4472c4" %)** 0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1278
1279
1280
1281
1282 ==== (% style="color:blue" %)** Copy downlink to uplink **(%%) ====
1283
1284
1285 * (((
1286 (% style="color:#037691" %)** AT Command:**
1287 )))
1288
1289 (% 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.
1290
1291
1292 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.
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-20220823173747-6.png?width=1124&height=165&rev=1.1||alt="image-20220823173747-6.png"]]
1296
1297
1298
1299 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1300
1301
1302 [[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"]]
1303
1304
1305 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1306
1307
1308
1309
1310 ==== (% style="color:blue" %)**Query version number and frequency band 、TDC**(%%) ====
1311
1312
1313 (((
1314 * (% style="color:#037691" %)**Downlink Payload:**
1315
1316 (% style="color:#4472c4" %)** 26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1317 )))
1318
1319
1320 Example：
1321
1322
1323 [[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"]]
1324
1325
1326
1327
1328 ==== (% style="color:blue" %)** Monitor RS485 communication of other devices**(%%) ====
1329
1330
1331 * (((
1332 (% style="color:#037691" %)** AT Command:**
1333 )))
1334
1335 (% 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.
1336
1337 (% 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.
1338
1339 (% style="color:#4472c4" %)**AT+RXMODE=0,0  ** (%%) ~/~/  Disable this mode (default)
1340
1341
1342 * (((
1343 (% style="color:#037691" %)**Downlink Payload:**
1344 )))
1345
1346 (% style="color:#4472c4" %)** A6 aa bb bb               ** (%%) ~/~/same as AT+RXMODE=aa,bb
1347
1348 [[image:image-20220824144240-1.png]]
1349
1350
1351
1352 == 3.6 Listening mode for RS485 network ==
1353
1354
1355 (((
1356 This feature support since firmware v1.4
1357 )))
1358
1359 (((
1360 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.
1361
1362
1363 )))
1364
1365 (% 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"]]
1366
1367 (% title="Click and drag to resize" %)​
1368
1369 (((
1370 To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
1371 )))
1372
1373 (((
1374
1375 )))
1376
1377 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1378 |=(% style="width: 100px;" %)(((
1379 **Command example**
1380 )))|=(% style="width: 400px;" %)(((
1381 **Function**
1382 )))
1383 |(% style="width:100px" %)(((
1384 AT+RXMODE=1,10
1385 )))|(% style="width:400px" %)(((
1386 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.
1387 )))
1388 |(% style="width:100px" %)(((
1389 AT+RXMODE=2,500
1390 )))|(% style="width:400px" %)(((
1391 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
1392 )))
1393 |(% style="width:100px" %)(((
1394 AT+RXMODE=0,0
1395 )))|(% style="width:400px" %)(((
1396 Disable listening mode. This is the default settings.
1397 )))
1398 |(% style="width:100px" %)(((
1399
1400 )))|(% style="width:400px" %)(((
1401 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1402 )))
1403
1404 (((
1405
1406
1407 (% style="color:#037691" %)**Downlink Command:**
1408 )))
1409
1410 (((
1411 (% style="color:#4472c4" %)** 0xA6 aa bb cc **(%%) same as AT+RXMODE=aa,(bb<<8 | cc)
1412 )))
1413
1414 (((
1415
1416 )))
1417
1418 (((
1419 **Example**:
1420 )))
1421
1422 (((
1423 The RS485-LN is set to AT+RXMODE=2,1000
1424 )))
1425
1426 (((
1427 There is a two Modbus commands in the RS485 network as below:
1428 )))
1429
1430 (((
1431 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1432 )))
1433
1434 (((
1435 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1436 )))
1437
1438 (((
1439 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
1440
1441
1442 )))
1443
1444 (((
1445 (% 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" %)​
1446 )))
1447
1448 (((
1449
1450 )))
1451
1452 (((
1453 (((
1454 (% 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.**
1455 )))
1456 )))
1457
1458
1459
1460 == 3.7 Buttons ==
1461
1462
1463 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1464 |=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1465 |(% 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**
1466 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1467 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1468
1469 == 3.8 LEDs ==
1470
1471
1472 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1473 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1474 |**PWR**|Always on if there is power
1475 |**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.
1476
1477 = 4. Case Study =
1478
1479
1480 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]]
1481
1482
1483
1484 = 5. Use AT Command =
1485
1486
1487 == 5.1 Access AT Command ==
1488
1489
1490 (((
1491 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.
1492
1493
1494 )))
1495
1496 (% 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" %)​
1497
1498
1499
1500 (((
1501 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:
1502
1503
1504 )))
1505
1506 (% 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" %)​
1507
1508
1509 (((
1510 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/]]
1511 )))
1512
1513
1514
1515 == 5.2 Common AT Command Sequence ==
1516
1517
1518 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1519
1520
1521 If device has not joined network yet:
1522
1523 * (% style="color:#037691" %)**AT+FDR**
1524 * (% style="color:#037691" %)**AT+NJM=0**
1525 * (% style="color:#037691" %)**ATZ**
1526
1527 (((
1528
1529
1530 If device already joined network:
1531
1532 * (% style="color:#037691" %)**AT+NJM=0**
1533 * (% style="color:#037691" %)**ATZ**
1534
1535
1536 )))
1537
1538
1539
1540 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1541
1542
1543 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1544
1545 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1546
1547 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1548
1549 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1550
1551 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1552
1553 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1554
1555 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1556
1557 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1558
1559 (% 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.
1560
1561 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1562
1563
1564 (% style="color:red" %)**Note:**
1565
1566 (((
1567 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1568 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1569 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.
1570 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
1571
1572
1573 )))
1574
1575 (% 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" %)​
1576
1577
1578
1579 = 6. FAQ =
1580
1581
1582 == 6.1 How to upgrade the image? ==
1583
1584
1585 (((
1586 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1587 )))
1588
1589 * (((
1590 Support new features
1591 )))
1592 * (((
1593 For bug fix
1594 )))
1595 * (((
1596 Change LoRaWAN bands.
1597 )))
1598
1599 (((
1600 Below shows the hardware connection for how to upload an image to RS485-LN:
1601 )))
1602
1603 (% 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"]]
1604
1605 (% title="Click and drag to resize" %)​
1606
1607 (((
1608 (% 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]].
1609
1610
1611 )))
1612
1613 (((
1614 (% 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]].
1615
1616
1617 )))
1618
1619 (((
1620 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1621
1622
1623 )))
1624
1625 (((
1626 (((
1627 (((
1628 (% 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.
1629 )))
1630 )))
1631 )))
1632
1633
1634 (% 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" %)​
1635
1636
1637 (% 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" %)​
1638
1639
1640 (% 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" %)​
1641
1642
1643 (% 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:**
1644
1645 (% 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" %)​
1646
1647
1648
1649 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1650
1651
1652 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1653
1654
1655
1656 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1657
1658
1659 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"]].
1660
1661
1662
1663 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1664
1665
1666 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1667
1668 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1669
1670
1671
1672 == 6.5 Can i use point to point communication for RS485-LN? ==
1673
1674
1675 Yes, please refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1676
1677
1678
1679 == 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1680
1681
1682 [[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/]]
1683
1684
1685
1686 = 7. Trouble Shooting =
1687
1688
1689 == 7.1 Downlink doesn't work, how to solve it? ==
1690
1691
1692 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1693
1694
1695
1696 == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1697
1698
1699 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1700
1701
1702
1703 = 8. Order Info =
1704
1705
1706 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1707
1708 (% style="color:blue" %)**XXX:**
1709
1710 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1711 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1712 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1713 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1714 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1715 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1716 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1717 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1718 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1719 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1720
1721 = 9.Packing Info =
1722
1723
1724 **Package Includes**:
1725
1726 * RS485-LN x 1
1727 * Stick Antenna for LoRa RF part x 1
1728 * Program cable x 1
1729
1730 **Dimension and weight**:
1731
1732 * Device Size: 13.5 x 7 x 3 cm
1733 * Device Weight: 105g
1734 * Package Size / pcs : 14.5 x 8 x 5 cm
1735 * Weight / pcs : 170g
1736
1737 = 10. FCC Caution for RS485LN-US915 =
1738
1739
1740 (((
1741 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1742 )))
1743
1744 (((
1745 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.
1746 )))
1747
1748 (((
1749
1750 )))
1751
1752 (((
1753 (% style="color:red" %)**IMPORTANT NOTE:**
1754 )))
1755
1756 (((
1757 (% 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:
1758 )))
1759
1760 (((
1761 —Reorient or relocate the receiving antenna.
1762 )))
1763
1764 (((
1765 —Increase the separation between the equipment and receiver.
1766 )))
1767
1768 (((
1769 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1770 )))
1771
1772 (((
1773 —Consult the dealer or an experienced radio/TV technician for help.
1774 )))
1775
1776 (((
1777
1778 )))
1779
1780 (((
1781 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1782 )))
1783
1784 (((
1785 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.
1786 )))
1787
1788
1789
1790 = 11. Support =
1791
1792
1793 * (((
1794 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.
1795 )))
1796 * (((
1797 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]].
1798
1799
1800
1801 )))