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Version 68.2 by Xiaoling on 2022/08/08 09:53
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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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30
31 = 1.Introduction =
32
33 == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
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35 (((
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37 (((
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40 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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46 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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52 (% 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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58 (% 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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62 (% 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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69 (% 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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71
72
73 == 1.2 Specifications ==
74
75
76 **Hardware System:**
77
78 * STM32L072CZT6 MCU
79 * SX1276/78 Wireless Chip 
80 * Power Consumption (exclude RS485 device):
81 ** Idle: 32mA@12v
82 ** 20dB Transmit: 65mA@12v
83
84 **Interface for Model:**
85
86 * RS485
87 * Power Input 7~~ 24V DC. 
88
89 **LoRa Spec:**
90
91 * Frequency Range:
92 ** Band 1 (HF): 862 ~~ 1020 Mhz
93 ** Band 2 (LF): 410 ~~ 528 Mhz
94 * 168 dB maximum link budget.
95 * +20 dBm - 100 mW constant RF output vs.
96 * +14 dBm high efficiency PA.
97 * Programmable bit rate up to 300 kbps.
98 * High sensitivity: down to -148 dBm.
99 * Bullet-proof front end: IIP3 = -12.5 dBm.
100 * Excellent blocking immunity.
101 * Low RX current of 10.3 mA, 200 nA register retention.
102 * Fully integrated synthesizer with a resolution of 61 Hz.
103 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
104 * Built-in bit synchronizer for clock recovery.
105 * Preamble detection.
106 * 127 dB Dynamic Range RSSI.
107 * Automatic RF Sense and CAD with ultra-fast AFC.
108 * Packet engine up to 256 bytes with CRC
109
110
111
112 == 1.3 Features ==
113
114
115 * LoRaWAN Class A & Class C protocol (default Class C)
116 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
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
126 == 1.4 Applications ==
127
128
129 * Smart Buildings & Home Automation
130 * Logistics and Supply Chain Management
131 * Smart Metering
132 * Smart Agriculture
133 * Smart Cities
134 * Smart Factory
135
136
137
138 == 1.5 Firmware Change log ==
139
140
141 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
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144
145 == 1.6 Hardware Change log ==
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151 v1.2: Add External Interrupt Pin.
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155 v1.0: Release
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162
163 = 2. Power ON Device =
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167 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
168
169 * Power Source VIN to RS485-LN VIN+
170 * Power Source GND to RS485-LN VIN-
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173 Once there is power, the RS485-LN will be on.
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176 (% 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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181
182 = 3. Operation Mode =
183
184 == 3.1 How it works? ==
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186
187 (((
188 (((
189 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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195
196 == 3.2 Example to join LoRaWAN network ==
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198
199 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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209 (((
210 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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213 (% 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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217 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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221 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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225 Each RS485-LN is shipped with a sticker with unique device EUI:
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229 (% 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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234 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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238 **Add APP EUI in the application.**
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242 (% 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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244 (% 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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246 (% 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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248 (% 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"]](% title="Click and drag to resize" %)​
249
250 You can also choose to create the device manually.
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252 (% 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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254
255
256 **Add APP KEY and DEV EUI**
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258 (% 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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261 (((
262 (% 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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265 (% 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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267
268
269 == 3.3 Configure Commands to read data ==
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271
272 (((
273 (((
274 (((
275 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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281 (% 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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288
289 === 3.3.1 Configure UART settings for RS485 or TTL communication ===
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291
292 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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294 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
295 |=(% style="width: 110px;" %)(((
296 **AT Commands**
297 )))|=(% style="width: 190px;" %)(((
298 **Description**
299 )))|=(% style="width: 190px;" %)(((
300 **Example**
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302 |(% style="width:110px" %)(((
303 AT+BAUDR
304 )))|(% style="width:190px" %)(((
305 Set the baud rate (for RS485 connection). Default Value is: 9600.
306 )))|(% style="width:190px" %)(((
307 (((
308 AT+BAUDR=9600
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311 (((
312 Options: (1200,2400,4800,14400,19200,115200)
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315 |(% style="width:110px" %)(((
316 AT+PARITY
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318 Set UART parity (for RS485 connection)
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321 AT+PARITY=0
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324 (((
325 Option: 0: no parity, 1: odd parity, 2: even parity
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328 |(% style="width:110px" %)(((
329 AT+STOPBIT
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332 Set serial stopbit (for RS485 connection)
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338 )))|(% style="width:190px" %)(((
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340 AT+STOPBIT=0 for 1bit
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343 (((
344 AT+STOPBIT=1 for 1.5 bit
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347 (((
348 AT+STOPBIT=2 for 2 bits
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352
353
354
355 === 3.3.2 Configure sensors ===
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357
358 (((
359 (((
360 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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366 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
367 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
368 |AT+CFGDEV|(% style="width:110px" %)(((
369 (((
370 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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372
373 (((
374 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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376
377 (((
378 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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380 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
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382
383
384
385 === 3.3.3 Configure read commands for each sampling ===
386
387
388 (((
389 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.
390
391 To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
392
393 This section describes how to achieve above goals.
394
395 During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
396
397
398 (% style="color:#037691" %)**Each RS485 commands include two parts:**
399
400 ~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.
401
402 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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404 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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406
407 After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
408
409 Below are examples for the how above AT Commands works.
410
411
412 (% 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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414 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
415 |(% style="width:496px" %)(((
416 (% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
417
418 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
419
420 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
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422
423 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.
424
425 In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
426
427
428 (% style="color:#037691" %)**AT+DATACUTx **(%%)**: **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
429
430 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
431 |(% style="width:510px" %)(((
432 **AT+DATACUTx=a,b,c**
433
434 * **a: length for the return of AT+COMMAND**
435 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
436 * **c: define the position for valid value.  **
437 )))
438
439 **Examples:**
440
441 * (% style="color:#037691" %)**Grab bytes**
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443 (% 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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446 * (% style="color:#037691" %)**Grab a section**
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448 (% 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" %)​
449
450
451 * (% style="color:#037691" %)**Grab different sections**
452
453 (% 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" %)​
454
455
456
457 )))
458
459 === 3.3.4 Compose the uplink payload ===
460
461
462 (((
463 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.**
464
465
466 )))
467
468 (((
469 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
470
471
472 )))
473
474 (((
475 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
476 )))
477
478 (((
479 Final Payload is
480 )))
481
482 (((
483 (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
484 )))
485
486 (((
487 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
488 )))
489
490 (% aria-label="1653269759169-150.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653269759169-150.png||data-widget="image" height="513" width="716"]](% 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" %)​
491
492
493 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
494
495
496 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
497
498 Final Payload is
499
500 (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
501
502
503 1. PAYVER: Defined by AT+PAYVER
504 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
505 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
506 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
507
508 (% 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" %)​
509
510
511 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
512
513 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
514
515 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
516
517 DATA3=the rest of Valid value of RETURN10= **30**
518
519
520 (% 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:**
521
522 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
523
524 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
525
526 * For US915 band, max 11 bytes for each uplink.
527
528 ~* For all other bands: max 51 bytes for each uplink.
529
530
531 Below are the uplink payloads:
532
533 (% 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" %)​
534
535
536
537 === 3.3.5 Uplink on demand ===
538
539
540 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.
541
542 Downlink control command:
543
544 **0x08 command**: Poll an uplink with current command set in RS485-LN.
545
546 **0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
547
548
549
550 === 3.3.6 Uplink on Interrupt ===
551
552
553 RS485-LN support external Interrupt uplink since hardware v1.2 release.
554
555 (% 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" %)​
556
557 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.
558
559
560
561 == 3.4 Uplink Payload ==
562
563
564 (% 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"]](% title="Click and drag to resize" %)​
565
566 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
567
568
569
570 == 3.5 Configure RS485-LN via AT or Downlink ==
571
572
573 (((
574 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
575 )))
576
577 (((
578 There are two kinds of Commands:
579 )))
580
581 * (((
582 (% 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]]
583 )))
584
585 * (((
586 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
587 )))
588
589 (((
590
591 )))
592
593
594
595 === 3.5.1 Common Commands ===
596
597
598 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]]
599
600
601
602 === 3.5.2 Sensor related commands ===
603
604
605 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.
606
607 (% 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"]](% title="Click and drag to resize" %)​
608
609 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)
610
611
612
613 === 3.5.3 Sensor related commands ===
614
615
616
617
618 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
619
620 (((
621 This command is used to configure the RS485 devices; they won’t be used during sampling.
622 )))
623
624 * (((
625 (% style="color:#037691" %)**AT Command**
626
627 (((
628 **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
629 )))
630 )))
631
632 (((
633
634 )))
635
636 * (((
637 (% style="color:#037691" %)**Downlink Payload**
638 )))
639
640 (((
641 Format: A8 MM NN XX XX XX XX YY
642 )))
643
644 (((
645 Where:
646 )))
647
648 * (((
649 MM: 1: add CRC-16/MODBUS ; 0: no CRC
650 )))
651 * (((
652 NN: The length of RS485 command
653 )))
654 * (((
655 XX XX XX XX: RS485 command total NN bytes
656 )))
657 * (((
658 (((
659 YY: How many bytes will be uplink from the return of this RS485 command,
660 )))
661
662 * (((
663 if YY=0, RS485-LN will execute the downlink command without uplink;
664 )))
665 * (((
666 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
667 )))
668 * (((
669 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
670 )))
671 )))
672
673 (((
674
675
676 **Example 1**  ~-~-> Configure without ask for uplink (YY=0)
677 )))
678
679 (((
680 To connect a Modbus Alarm with below commands.
681 )))
682
683 * (((
684 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.
685 )))
686
687 * (((
688 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.
689 )))
690
691 (((
692
693
694 So if user want to use downlink command to control to RS485 Alarm, he can use:
695 )))
696
697 (((
698 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
699 )))
700
701 (((
702 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
703 )))
704
705 (((
706 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.
707 )))
708
709 (((
710
711 )))
712
713 (((
714 **Example 2**  ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
715 )))
716
717 (((
718 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
719 )))
720
721 (((
722
723 )))
724
725 (((
726 (((
727 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**
728 )))
729
730
731 )))
732
733 (((
734 (% 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" %)​
735 )))
736
737
738
739
740 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
741
742 (((
743 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.
744 )))
745
746 * (((
747 (% style="color:#037691" %)**AT Command:**
748
749 **AT+PAYVER:    **Set PAYVER field = 1
750
751
752 )))
753 * (((
754 (% style="color:#037691" %)**Downlink Payload:**
755 )))
756
757 (((
758 **0xAE 01**  ~-~->  Set PAYVER field =  0x01
759 )))
760
761 (((
762 **0xAE 0F**   ~-~->  Set PAYVER field =  0x0F
763 )))
764
765
766
767
768 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
769
770 (((
771 AT+COMMANDx or AT+DATACUTx
772 )))
773
774 (((
775 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"]].
776 )))
777
778 (((
779
780 )))
781
782 * (((
783 (% style="color:#037691" %)**AT Command:**
784 )))
785
786 **AT+COMMANDx:    **Configure RS485 read command to sensor.
787
788 **AT+DATACUTx:        **Configure how to handle return from RS485 devices.
789
790
791 * (((
792 (% style="color:#037691" %)**Downlink Payload:**
793 )))
794
795 (((
796 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
797 )))
798
799 (((
800 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
801 )))
802
803 (((
804 Format: AF MM NN LL XX XX XX XX YY
805 )))
806
807 (((
808 Where:
809 )))
810
811 * (((
812 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
813 )))
814 * (((
815 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
816 )))
817 * (((
818 LL:  The length of AT+COMMAND or AT+DATACUT command
819 )))
820 * (((
821 XX XX XX XX: AT+COMMAND or AT+DATACUT command
822 )))
823 * (((
824 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.
825 )))
826
827 (((
828
829
830 **Example:**
831 )))
832
833 (((
834 (% 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
835 )))
836
837 (((
838 (% 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**
839 )))
840
841 (((
842 (% 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**
843 )))
844
845
846
847
848 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
849
850 (((
851 **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]].
852 )))
853
854 (((
855 This command is valid since v1.3 firmware version
856 )))
857
858 (((
859 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.
860 )))
861
862 (((
863
864 )))
865
866 (((
867 **Example:**
868 )))
869
870 * (((
871 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
872 )))
873 * (((
874 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.
875 )))
876 * (((
877 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.
878
879
880 )))
881
882 (% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]](% title="Click and drag to resize" %)​
883
884 (% 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" %)​
885
886
887
888
889 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
890
891 (((
892 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.
893 )))
894
895 (((
896 Default value: 0, range:  0 ~~ 65 seconds
897 )))
898
899 * (((
900 (% style="color:#037691" %)** AT Command:**
901
902 **AT+CMDDLaa=hex(bb cc)*1000**
903 )))
904
905 (((
906
907
908 **Example:**
909 )))
910
911 (((
912 **AT+CMDDL1=1000** to send the open time to 1000ms
913 )))
914
915 (((
916
917 )))
918
919 * (((
920 (% style="color:#037691" %)** Downlink Payload:**
921 )))
922
923 (((
924 **0x AA aa bb cc**
925 )))
926
927 (((
928 Same as: AT+CMDDLaa=hex(bb cc)*1000
929 )))
930
931 (((
932 **Example:**
933 )))
934
935 (((
936 **0xAA 01 00 01**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
937 )))
938
939
940
941
942 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
943
944 (((
945 Define to use one uplink or multiple uplinks for the sampling.
946 )))
947
948 (((
949 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
950
951
952 )))
953
954 * (((
955 (% style="color:#037691" %)** AT Command:**
956 )))
957
958 **AT+DATAUP=0**
959
960 **AT+DATAUP=1**
961
962
963 * (((
964 (% style="color:#037691" %)** Downlink Payload:**
965 )))
966
967 (((
968 **0xAD 00**  **~-~->** Same as AT+DATAUP=0
969 )))
970
971 (((
972 **0xAD 01**  **~-~->** Same as AT+DATAUP=1
973 )))
974
975
976
977
978 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
979
980 (((
981 Ask device to send an uplink immediately.
982 )))
983
984 * (((
985 (% style="color:#037691" %)** AT Command:**
986 )))
987
988 (((
989 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
990 )))
991
992 (((
993
994 )))
995
996 * (((
997 (% style="color:#037691" %)** Downlink Payload:**
998 )))
999
1000 (((
1001 **0x08 FF**, RS485-LN will immediately send an uplink.
1002 )))
1003
1004
1005
1006
1007 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
1008
1009 (((
1010 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1011
1012
1013 )))
1014
1015 * (((
1016 (% style="color:#037691" %)** AT Command:**
1017 )))
1018
1019 (((
1020 **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
1021 )))
1022
1023 (((
1024 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1025 )))
1026
1027 (((
1028 Example screen shot after clear all RS485 commands. 
1029 )))
1030
1031 (((
1032
1033 )))
1034
1035 (((
1036 The uplink screen shot is:
1037 )))
1038
1039 (% 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" %)​
1040
1041
1042 * (((
1043 (% style="color:#037691" %)** Downlink Payload:**
1044 )))
1045
1046 (((
1047 **0x09 aa bb** same as AT+CMDEAR=aa,bb
1048 )))
1049
1050
1051
1052
1053 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1054
1055 (((
1056 Set the Rs485 serial communication parameters:
1057 )))
1058
1059 * (((
1060 (% style="color:#037691" %)** AT Command:**
1061 )))
1062
1063 (((
1064
1065
1066 * Set Baud Rate
1067 )))
1068
1069 **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
1070
1071
1072 (((
1073 * Set UART Parity
1074 )))
1075
1076 **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
1077
1078
1079 (((
1080 * Set STOPBIT
1081 )))
1082
1083 **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1084
1085
1086
1087 * (((
1088 (% style="color:#037691" %)** Downlink Payload:**
1089 )))
1090
1091 (((
1092 **A7 01 aa bb**:  Same  AT+BAUDR=hex(aa bb)*100
1093 )))
1094
1095 (((
1096 **Example:**
1097 )))
1098
1099 * (((
1100 A7 01 00 60   same as AT+BAUDR=9600
1101 )))
1102 * (((
1103 A7 01 04 80  same as AT+BAUDR=115200
1104 )))
1105
1106 (((
1107 A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1108 )))
1109
1110 (((
1111 A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1112 )))
1113
1114
1115
1116
1117 == 3.6 Listening mode for RS485 network ==
1118
1119
1120 (((
1121 This feature support since firmware v1.4
1122 )))
1123
1124 (((
1125 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.
1126
1127
1128 )))
1129
1130 (% 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"]](% title="Click and drag to resize" %)​
1131
1132 (((
1133 To enable the listening mode, use can run the command AT+RXMODE.
1134 )))
1135
1136 (((
1137
1138 )))
1139
1140 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1141 |=(% style="width: 100px;" %)(((
1142 **Command example**
1143 )))|=(% style="width: 400px;" %)(((
1144 **Function**
1145 )))
1146 |(% style="width:100px" %)(((
1147 AT+RXMODE=1,10
1148 )))|(% style="width:400px" %)(((
1149 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.
1150 )))
1151 |(% style="width:100px" %)(((
1152 AT+RXMODE=2,500
1153 )))|(% style="width:400px" %)(((
1154 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
1155 )))
1156 |(% style="width:100px" %)(((
1157 AT+RXMODE=0,0
1158 )))|(% style="width:400px" %)(((
1159 Disable listening mode. This is the default settings.
1160 )))
1161 |(% style="width:100px" %)(((
1162
1163 )))|(% style="width:400px" %)(((
1164 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1165 )))
1166
1167 (((
1168 (% style="color:#037691" %)** Downlink Command:**
1169 )))
1170
1171 (((
1172 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1173 )))
1174
1175 (((
1176
1177 )))
1178
1179 (((
1180 **Example**:
1181 )))
1182
1183 (((
1184 The RS485-LN is set to AT+RXMODE=2,1000
1185 )))
1186
1187 (((
1188 There is a two Modbus commands in the RS485 network as below:
1189 )))
1190
1191 (((
1192 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1193 )))
1194
1195 (((
1196 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1197 )))
1198
1199 (((
1200 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
1201 )))
1202
1203 (((
1204 (% 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" %)​
1205 )))
1206
1207 (((
1208
1209 )))
1210
1211 (((
1212 (((
1213 (% 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.**
1214 )))
1215 )))
1216
1217
1218
1219 == 3.7 Buttons ==
1220
1221
1222 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1223 |=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1224 |(% 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**
1225 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1226 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1227
1228
1229
1230
1231 == 3.8 LEDs ==
1232
1233
1234 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1235 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1236 |**PWR**|Always on if there is power
1237 |**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.
1238
1239
1240
1241
1242 = 4. Case Study =
1243
1244
1245 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]]
1246
1247
1248
1249 = 5. Use AT Command =
1250
1251 == 5.1 Access AT Command ==
1252
1253
1254 (((
1255 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.
1256 )))
1257
1258 (% 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" %)​
1259
1260
1261 (((
1262 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:
1263 )))
1264
1265 (% 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" %)​
1266
1267
1268 (((
1269 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/]]
1270 )))
1271
1272
1273
1274 == 5.2 Common AT Command Sequence ==
1275
1276
1277 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1278
1279
1280 If device has not joined network yet:
1281
1282 * (% style="color:#037691" %)**AT+FDR**
1283 * (% style="color:#037691" %)**AT+NJM=0**
1284 * (% style="color:#037691" %)**ATZ**
1285
1286 (((
1287
1288
1289 If device already joined network:
1290
1291 * (% style="color:#037691" %)**AT+NJM=0**
1292 * (% style="color:#037691" %)**ATZ**
1293
1294
1295 )))
1296
1297
1298
1299 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1300
1301
1302 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1303
1304 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1305
1306 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1307
1308 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1309
1310 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1311
1312 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1313
1314 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1315
1316 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1317
1318 (% 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.
1319
1320 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1321
1322
1323 (% style="color:red" %)**Note:**
1324
1325 (((
1326 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1327 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1328 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.
1329 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
1330 )))
1331
1332 (% 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" %)​
1333
1334
1335
1336 = 6. FAQ =
1337
1338 == 6.1 How to upgrade the image? ==
1339
1340
1341 (((
1342 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1343 )))
1344
1345 * (((
1346 Support new features
1347 )))
1348 * (((
1349 For bug fix
1350 )))
1351 * (((
1352 Change LoRaWAN bands.
1353 )))
1354
1355 (((
1356 Below shows the hardware connection for how to upload an image to RS485-LN:
1357 )))
1358
1359 (% 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"]]
1360
1361 (% title="Click and drag to resize" %)​
1362
1363 (((
1364 (% 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]].
1365 )))
1366
1367 (((
1368 (% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:https://www.dragino.com/downloads/index.php?dir=RS485-LN/Firmware/]].
1369 )))
1370
1371 (((
1372 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1373 )))
1374
1375 (((
1376 (((
1377 (((
1378 (% 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.
1379 )))
1380 )))
1381 )))
1382
1383
1384 (% 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" %)​
1385
1386
1387 (% 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" %)​
1388
1389
1390 (% 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" %)​
1391
1392
1393 (% 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:**
1394
1395 (% 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" %)​
1396
1397
1398
1399 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1400
1401
1402 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1403
1404
1405
1406 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1407
1408
1409 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"]].
1410
1411
1412
1413 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1414
1415
1416 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1417
1418 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1419
1420
1421
1422 == 6.5 Can i use point to point communication for RS485-LN? ==
1423
1424
1425 Yes, please refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1426
1427
1428
1429 == 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1430
1431
1432 [[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/]]
1433
1434
1435
1436 = 7. Trouble Shooting =
1437
1438
1439 == 7.1 Downlink doesn't work, how to solve it? ==
1440
1441
1442 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1443
1444
1445
1446 == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1447
1448
1449 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1450
1451
1452
1453 = 8. Order Info =
1454
1455
1456 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1457
1458 (% style="color:blue" %)**XXX:**
1459
1460 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1461 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1462 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1463 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1464 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1465 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1466 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1467 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1468 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1469 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1470
1471
1472
1473 = 9.Packing Info =
1474
1475
1476 **Package Includes**:
1477
1478 * RS485-LN x 1
1479 * Stick Antenna for LoRa RF part x 1
1480 * Program cable x 1
1481
1482 **Dimension and weight**:
1483
1484 * Device Size: 13.5 x 7 x 3 cm
1485 * Device Weight: 105g
1486 * Package Size / pcs : 14.5 x 8 x 5 cm
1487 * Weight / pcs : 170g
1488
1489
1490
1491 = 10. FCC Caution for RS485LN-US915 =
1492
1493
1494 (((
1495 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1496 )))
1497
1498 (((
1499 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.
1500 )))
1501
1502 (((
1503
1504 )))
1505
1506 (((
1507 (% style="color:red" %)**IMPORTANT NOTE:**
1508 )))
1509
1510 (((
1511 **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:
1512 )))
1513
1514 (((
1515 —Reorient or relocate the receiving antenna.
1516 )))
1517
1518 (((
1519 —Increase the separation between the equipment and receiver.
1520 )))
1521
1522 (((
1523 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1524 )))
1525
1526 (((
1527 —Consult the dealer or an experienced radio/TV technician for help.
1528 )))
1529
1530 (((
1531
1532 )))
1533
1534 (((
1535 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1536 )))
1537
1538 (((
1539 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.
1540 )))
1541
1542
1543
1544 = 11. Support =
1545
1546
1547 * (((
1548 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.
1549 )))
1550 * (((
1551 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]].
1552 )))