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Version 61.9 by Xiaoling on 2022/06/14 11:41
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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 ==
34
35 (((
36 (((
37 (((
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39
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" %)​
70
71
72 == 1.2 Specifications ==
73
74
75 **Hardware System:**
76
77 * STM32L072CZT6 MCU
78 * SX1276/78 Wireless Chip 
79 * Power Consumption (exclude RS485 device):
80 ** Idle: 32mA@12v
81 ** 20dB Transmit: 65mA@12v
82
83
84 **Interface for Model:**
85
86 * RS485
87 * Power Input 7~~ 24V DC. 
88
89
90 **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
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111
112
113
114 == 1.3 Features ==
115
116 * LoRaWAN Class A & Class C protocol (default Class C)
117 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
118 * AT Commands to change parameters
119 * Remote configure parameters via LoRa Downlink
120 * Firmware upgradable via program port
121 * Support multiply RS485 devices by flexible rules
122 * Support Modbus protocol
123 * Support Interrupt uplink (Since hardware version v1.2)
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125
126
127
128 == 1.4 Applications ==
129
130 * Smart Buildings & Home Automation
131 * Logistics and Supply Chain Management
132 * Smart Metering
133 * Smart Agriculture
134 * Smart Cities
135 * Smart Factory
136
137 == 1.5 Firmware Change log ==
138
139 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
140
141
142 == 1.6 Hardware Change log ==
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147 v1.2: Add External Interrupt Pin.
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151 v1.0: Release
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157
158 = 2. Power ON Device =
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161 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
162
163 * Power Source VIN to RS485-LN VIN+
164 * Power Source GND to RS485-LN VIN-
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167 Once there is power, the RS485-LN will be on.
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170 (% 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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174
175 = 3. Operation Mode =
176
177 == 3.1 How it works? ==
178
179 (((
180 (((
181 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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186
187 == 3.2 Example to join LoRaWAN network ==
188
189 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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191 (% 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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194 (((
195 (((
196 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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199 (((
200 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
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203 (% 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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207 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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211 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
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215 Each RS485-LN is shipped with a sticker with unique device EUI:
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219 (% 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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224 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
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228 **Add APP EUI in the application.**
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232 (% 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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234 (% 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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236 (% aria-label="image-20220519174512-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-3.png||data-widget="image" height="556" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
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238 (% 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" %)​
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240 You can also choose to create the device manually.
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242 (% 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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244
245
246 **Add APP KEY and DEV EUI**
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248 (% 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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251 (((
252 (% style="color:blue" %)**Step 2**(%%): Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
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255 (% aria-label="1652953568895-172.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953568895-172.png||data-widget="image" height="232" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
256
257
258 == 3.3 Configure Commands to read data ==
259
260 (((
261 (((
262 (((
263 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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269 (% 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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275
276 === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
277
278 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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280 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
281 |=(% style="width: 110px;" %)(((
282 **AT Commands**
283 )))|=(% style="width: 190px;" %)(((
284 **Description**
285 )))|=(% style="width: 190px;" %)(((
286 **Example**
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288 |(% style="width:110px" %)(((
289 AT+BAUDR
290 )))|(% style="width:190px" %)(((
291 Set the baud rate (for RS485 connection). Default Value is: 9600.
292 )))|(% style="width:190px" %)(((
293 (((
294 AT+BAUDR=9600
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296
297 (((
298 Options: (1200,2400,4800,14400,19200,115200)
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301 |(% style="width:110px" %)(((
302 AT+PARITY
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304 Set UART parity (for RS485 connection)
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307 AT+PARITY=0
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310 (((
311 Option: 0: no parity, 1: odd parity, 2: even parity
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314 |(% style="width:110px" %)(((
315 AT+STOPBIT
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317 (((
318 Set serial stopbit (for RS485 connection)
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324 )))|(% style="width:190px" %)(((
325 (((
326 AT+STOPBIT=0 for 1bit
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329 (((
330 AT+STOPBIT=1 for 1.5 bit
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333 (((
334 AT+STOPBIT=2 for 2 bits
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337
338
339 === 3.3.2 Configure sensors ===
340
341 (((
342 (((
343 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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347 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)
348 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 190px;" %)**Description**|=(% style="width: 190px;" %)**Example**
349 |AT+CFGDEV|(% style="width:110px" %)(((
350 (((
351 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
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354 (((
355 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
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357
358 (((
359 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
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361 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
362
363
364 === 3.3.3 Configure read commands for each sampling ===
365
366 (((
367 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.
368
369 To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
370
371 This section describes how to achieve above goals.
372
373 During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
374
375
376 (% style="color:#037691" %)**Each RS485 commands include two parts:**
377
378 ~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.
379
380 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.
381
382 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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384
385 After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
386
387 Below are examples for the how above AT Commands works.
388
389
390 (% 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:
391
392 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
393 |(% style="width:496px" %)(((
394 (% style="color:#037691" %)**AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
395
396 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
397
398 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
399 )))
400
401 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.
402
403 In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
404
405
406 (% style="color:#037691" %)**AT+DATACUTx **(%%)**: **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
407
408 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
409 |(% style="width:510px" %)(((
410 **AT+DATACUTx=a,b,c**
411
412 * **a: length for the return of AT+COMMAND**
413 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
414 * **c: define the position for valid value.  **
415 )))
416
417 **Examples:**
418
419 * (% style="color:#037691" %)**Grab bytes**
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421 (% 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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424 * (% style="color:#037691" %)**Grab a section**
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426 (% 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" %)​
427
428
429 * (% style="color:#037691" %)**Grab different sections**
430
431 (% 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" %)​
432
433
434
435 )))
436
437 === 3.3.4 Compose the uplink payload ===
438
439 (((
440 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.**
441
442
443 )))
444
445 (((
446 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
447
448
449 )))
450
451 (((
452 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
453 )))
454
455 (((
456 Final Payload is
457 )))
458
459 (((
460 (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
461 )))
462
463 (((
464 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
465 )))
466
467 (% 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" %)​
468
469
470 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
471
472
473 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
474
475 Final Payload is
476
477 (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
478
479
480 1. PAYVER: Defined by AT+PAYVER
481 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
482 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
483 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
484
485 (% 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" %)​
486
487
488 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
489
490 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
491
492 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
493
494 DATA3=the rest of Valid value of RETURN10= **30**
495
496
497 (% 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:
498
499 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
500
501 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
502
503 * For US915 band, max 11 bytes for each uplink.
504
505 ~* For all other bands: max 51 bytes for each uplink.
506
507
508 Below are the uplink payloads:
509
510 (% 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" %)​
511
512
513
514 === 3.3.5 Uplink on demand ===
515
516 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.
517
518 Downlink control command:
519
520 **0x08 command**: Poll an uplink with current command set in RS485-LN.
521
522 **0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
523
524
525
526 === 3.3.6 Uplink on Interrupt ===
527
528 RS485-LN support external Interrupt uplink since hardware v1.2 release.
529
530 (% 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" %)​
531
532 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.
533
534
535 == 3.4 Uplink Payload ==
536
537
538 (% 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" %)​
539
540 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
541
542
543 == 3.5 Configure RS485-LN via AT or Downlink ==
544
545 (((
546 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
547 )))
548
549 (((
550 There are two kinds of Commands:
551 )))
552
553 * (((
554 (% 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]]
555 )))
556
557 * (((
558 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
559 )))
560
561 (((
562
563 )))
564
565
566 === 3.5.1 Common Commands ===
567
568 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]]
569
570
571 === 3.5.2 Sensor related commands ===
572
573 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.
574
575 (% 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"]](% style="background:url(~"http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[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" %)​
576
577 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)
578
579
580 === 3.5.3 Sensor related commands ===
581
582
583
584
585 ==== (% style="color:#037691" %)**RS485 Debug Command**(%%) ====
586
587 (((
588 This command is used to configure the RS485 devices; they won’t be used during sampling.
589 )))
590
591 * (((
592 (% style="color:#037691" %)**AT Command**
593
594 **AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
595
596
597 )))
598
599 (((
600 m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
601 )))
602
603 * (((
604 (% style="color:#037691" %)**Downlink Payload**
605 )))
606
607 (((
608 Format: A8 MM NN XX XX XX XX YY
609 )))
610
611 (((
612 Where:
613 )))
614
615 * (((
616 MM: 1: add CRC-16/MODBUS ; 0: no CRC
617 )))
618 * (((
619 NN: The length of RS485 command
620 )))
621 * (((
622 XX XX XX XX: RS485 command total NN bytes
623 )))
624 * (((
625 (((
626 YY: How many bytes will be uplink from the return of this RS485 command,
627 )))
628
629 * (((
630 if YY=0, RS485-LN will execute the downlink command without uplink;
631 )))
632 * (((
633 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
634 )))
635 * (((
636 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
637 )))
638 )))
639
640 (((
641 **Example 1** ~-~-> Configure without ask for uplink (YY=0)
642 )))
643
644 (((
645 To connect a Modbus Alarm with below commands.
646 )))
647
648 * (((
649 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.
650 )))
651
652 * (((
653 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.
654 )))
655
656 (((
657 So if user want to use downlink command to control to RS485 Alarm, he can use:
658 )))
659
660 (((
661 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
662 )))
663
664 (((
665 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
666 )))
667
668 (((
669 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.
670 )))
671
672 (((
673
674 )))
675
676 (((
677 **Example 2** ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
678 )))
679
680 (((
681 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
682 )))
683
684 (((
685
686 )))
687
688 (((
689 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:
690 )))
691
692 (((
693 **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
694 )))
695
696 (((
697 (% 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" %)​
698 )))
699
700
701
702
703 ==== **Set Payload version** ====
704
705 (((
706 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.
707 )))
708
709 * (((
710 **AT Command:**
711 )))
712
713 (% class="box infomessage" %)
714 (((
715 (((
716 **AT+PAYVER: Set PAYVER field = 1**
717 )))
718 )))
719
720 * (((
721 **Downlink Payload:**
722 )))
723
724 (((
725 **0xAE 01**  ~-~-> Set PAYVER field =  0x01
726 )))
727
728 (((
729 **0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
730 )))
731
732
733
734
735 ==== **Set RS485 Sampling Commands** ====
736
737 (((
738 AT+COMMANDx or AT+DATACUTx
739 )))
740
741 (((
742 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"]].
743 )))
744
745 (((
746
747 )))
748
749 * (((
750 **AT Command:**
751 )))
752
753 (% class="box infomessage" %)
754 (((
755 (((
756 **AT+COMMANDx: Configure RS485 read command to sensor.**
757 )))
758 )))
759
760 (% class="box infomessage" %)
761 (((
762 (((
763 **AT+DATACUTx: Configure how to handle return from RS485 devices.**
764 )))
765 )))
766
767 (((
768
769 )))
770
771 * (((
772 **Downlink Payload:**
773 )))
774
775 (((
776 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
777 )))
778
779 (((
780 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
781 )))
782
783 (((
784 Format: AF MM NN LL XX XX XX XX YY
785 )))
786
787 (((
788 Where:
789 )))
790
791 * (((
792 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
793 )))
794 * (((
795 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
796 )))
797 * (((
798 LL:  The length of AT+COMMAND or AT+DATACUT command
799 )))
800 * (((
801 XX XX XX XX: AT+COMMAND or AT+DATACUT command
802 )))
803 * (((
804 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.
805 )))
806
807 (((
808 **Example:**
809 )))
810
811 (((
812 (% 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
813 )))
814
815 (((
816 (% 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**
817 )))
818
819 (((
820 (% 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**
821 )))
822
823
824
825
826 ==== **Fast command to handle MODBUS device** ====
827
828 (((
829 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]].
830 )))
831
832 (((
833 This command is valid since v1.3 firmware version
834 )))
835
836 (((
837 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.
838 )))
839
840 (((
841
842 )))
843
844 (((
845 **Example:**
846 )))
847
848 * (((
849 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
850 )))
851 * (((
852 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.
853 )))
854 * (((
855 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.
856 )))
857
858 (% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]](% style="background:url(~"http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[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" %)​
859
860 (% aria-label="image-20220602165351-7.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-7.png||data-widget="image"]](% style="background:url(~"http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[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" %)​
861
862
863
864
865 ==== **RS485 command timeout** ====
866
867 (((
868 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.
869 )))
870
871 (((
872 Default value: 0, range:  0 ~~ 65 seconds
873 )))
874
875 * (((
876 **AT Command:**
877 )))
878
879 (% class="box infomessage" %)
880 (((
881 (((
882 **AT+CMDDLaa=hex(bb cc)*1000**
883 )))
884 )))
885
886 (((
887 **Example:**
888 )))
889
890 (((
891 **AT+CMDDL1=1000** to send the open time to 1000ms
892 )))
893
894 (((
895
896 )))
897
898 * (((
899 **Downlink Payload:**
900 )))
901
902 (((
903 **0x AA aa bb cc**
904 )))
905
906 (((
907 Same as: AT+CMDDLaa=hex(bb cc)*1000
908 )))
909
910 (((
911 **Example:**
912 )))
913
914 (((
915 0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
916 )))
917
918
919
920
921 ==== **Uplink payload mode** ====
922
923 (((
924 Define to use one uplink or multiple uplinks for the sampling.
925 )))
926
927 (((
928 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
929 )))
930
931 * (((
932 **AT Command:**
933 )))
934
935 (% class="box infomessage" %)
936 (((
937 (((
938 **AT+DATAUP=0**
939 )))
940 )))
941
942 (% class="box infomessage" %)
943 (((
944 (((
945 **AT+DATAUP=1**
946 )))
947 )))
948
949 (((
950
951 )))
952
953 * (((
954 **Downlink Payload:**
955 )))
956
957 (((
958 **0xAD 00**  **~-~->** Same as AT+DATAUP=0
959 )))
960
961 (((
962 **0xAD 01**  **~-~->** Same as AT+DATAUP=1
963 )))
964
965
966
967
968 ==== **Manually trigger an Uplink** ====
969
970 (((
971 Ask device to send an uplink immediately.
972 )))
973
974 * (((
975 **AT Command:**
976 )))
977
978 (((
979 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
980 )))
981
982 (((
983
984 )))
985
986 * (((
987 **Downlink Payload:**
988 )))
989
990 (((
991 **0x08 FF**, RS485-LN will immediately send an uplink.
992 )))
993
994
995
996
997 ==== **Clear RS485 Command** ====
998
999 (((
1000 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1001 )))
1002
1003 * (((
1004 **AT Command:**
1005 )))
1006
1007 (((
1008 **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
1009 )))
1010
1011 (((
1012 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1013 )))
1014
1015 (((
1016 Example screen shot after clear all RS485 commands. 
1017 )))
1018
1019 (((
1020
1021 )))
1022
1023 (((
1024 The uplink screen shot is:
1025 )))
1026
1027 (% 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" %)​
1028
1029
1030 * (((
1031 **Downlink Payload:**
1032 )))
1033
1034 (((
1035 **0x09 aa bb** same as AT+CMDEAR=aa,bb
1036 )))
1037
1038
1039
1040
1041 ==== **Set Serial Communication Parameters** ====
1042
1043 (((
1044 Set the Rs485 serial communication parameters:
1045 )))
1046
1047 * (((
1048 **AT Command:**
1049 )))
1050
1051 (((
1052 Set Baud Rate:
1053 )))
1054
1055 (% class="box infomessage" %)
1056 (((
1057 (((
1058 **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
1059 )))
1060 )))
1061
1062 (((
1063 Set UART Parity
1064 )))
1065
1066 (% class="box infomessage" %)
1067 (((
1068 (((
1069 **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
1070 )))
1071 )))
1072
1073 (((
1074 Set STOPBIT
1075 )))
1076
1077 (% class="box infomessage" %)
1078 (((
1079 (((
1080 **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1081 )))
1082 )))
1083
1084 (((
1085
1086 )))
1087
1088 * (((
1089 **Downlink Payload:**
1090 )))
1091
1092 (((
1093 **A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
1094 )))
1095
1096 (((
1097 **Example:**
1098 )))
1099
1100 * (((
1101 A7 01 00 60   same as AT+BAUDR=9600
1102 )))
1103 * (((
1104 A7 01 04 80  same as AT+BAUDR=115200
1105 )))
1106
1107 (((
1108 A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1109 )))
1110
1111 (((
1112 A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1113 )))
1114
1115
1116
1117
1118 == 3.6 Listening mode for RS485 network ==
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 (% 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" %)​
1129
1130 (((
1131 To enable the listening mode, use can run the command AT+RXMODE.
1132 )))
1133
1134 (((
1135
1136 )))
1137
1138 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1139 |=(% style="width: 100px;" %)(((
1140 **Command example**
1141 )))|=(% style="width: 400px;" %)(((
1142 **Function**
1143 )))
1144 |(% style="width:100px" %)(((
1145 AT+RXMODE=1,10
1146 )))|(% style="width:400px" %)(((
1147 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.
1148 )))
1149 |(% style="width:100px" %)(((
1150 AT+RXMODE=2,500
1151 )))|(% style="width:400px" %)(((
1152 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
1153 )))
1154 |(% style="width:100px" %)(((
1155 AT+RXMODE=0,0
1156 )))|(% style="width:400px" %)(((
1157 Disable listening mode. This is the default settings.
1158 )))
1159 |(% style="width:100px" %)(((
1160
1161 )))|(% style="width:400px" %)(((
1162 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1163 )))
1164
1165 (((
1166 **Downlink Command:**
1167 )))
1168
1169 (((
1170 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
1171 )))
1172
1173 (((
1174
1175 )))
1176
1177 (((
1178 **Example**:
1179 )))
1180
1181 (((
1182 The RS485-LN is set to AT+RXMODE=2,1000
1183 )))
1184
1185 (((
1186 There is a two Modbus commands in the RS485 network as below:
1187 )))
1188
1189 (((
1190 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
1191 )))
1192
1193 (((
1194 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
1195 )))
1196
1197 (((
1198 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
1199 )))
1200
1201 (((
1202 (% 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" %)​
1203 )))
1204
1205 (((
1206
1207 )))
1208
1209 (((
1210 (((
1211 (% 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.
1212 )))
1213 )))
1214
1215
1216 == 3.7 Buttons ==
1217
1218
1219 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1220 |=(% style="width: 50px;" %)**Button**|=(% style="width: 361px;" %)**Feature**
1221 |(% 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**
1222 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1223 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1224
1225 == 3.8 LEDs ==
1226
1227
1228 (% border="1" cellspacing="10" style="background-color:#f7faff; width:430px" %)
1229 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1230 |**PWR**|Always on if there is power
1231 |**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.
1232
1233 = 4. Case Study =
1234
1235 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]]
1236
1237
1238 = 5. Use AT Command =
1239
1240 == 5.1 Access AT Command ==
1241
1242 (((
1243 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.
1244 )))
1245
1246 (% 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" %)​
1247
1248
1249 (((
1250 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:
1251 )))
1252
1253 (% 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" %)​
1254
1255
1256 (((
1257 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/]]
1258 )))
1259
1260
1261
1262 == 5.2 Common AT Command Sequence ==
1263
1264 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1265
1266 If device has not joined network yet:
1267
1268 (% class="box infomessage" %)
1269 (((
1270 **AT+FDR**
1271 )))
1272
1273 (% class="box infomessage" %)
1274 (((
1275 **AT+NJM=0**
1276 )))
1277
1278 (% class="box infomessage" %)
1279 (((
1280 **ATZ**
1281 )))
1282
1283
1284 (((
1285 If device already joined network:
1286 )))
1287
1288 (% class="box infomessage" %)
1289 (((
1290 **AT+NJM=0**
1291 )))
1292
1293 (% class="box infomessage" %)
1294 (((
1295 **ATZ**
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 = 6. FAQ =
1336
1337 == 6.1 How to upgrade the image? ==
1338
1339 (((
1340 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1341 )))
1342
1343 * (((
1344 Support new features
1345 )))
1346 * (((
1347 For bug fix
1348 )))
1349 * (((
1350 Change LoRaWAN bands.
1351 )))
1352
1353 (((
1354 Below shows the hardware connection for how to upload an image to RS485-LN:
1355 )))
1356
1357 (% 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"]](% title="Click and drag to resize" %)​
1358
1359 (((
1360 **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]].
1361 )))
1362
1363 (((
1364 **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1365 )))
1366
1367 (((
1368 **Step3: **Open flashloader; choose the correct COM port to update.
1369 )))
1370
1371 (((
1372 (((
1373 (((
1374 (% 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.
1375 )))
1376 )))
1377 )))
1378
1379
1380 (% 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" %)​
1381
1382
1383 (% 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" %)​
1384
1385
1386 (% 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" %)​
1387
1388
1389 **Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1390
1391 (% 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" %)​
1392
1393
1394 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1395
1396 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1397
1398
1399 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1400
1401 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"]].
1402
1403
1404 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1405
1406 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1407
1408 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1409
1410
1411 = 7. Trouble Shooting =
1412
1413 == 7.1 Downlink doesn’t work, how to solve it? ==
1414
1415 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1416
1417
1418 == 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
1419
1420 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1421
1422
1423 = 8. Order Info =
1424
1425 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1426
1427 (% style="color:blue" %)**XXX:**
1428
1429 * (% style="color:blue" %)**EU433**(%%): frequency bands EU433
1430 * (% style="color:blue" %)**EU868**(%%): frequency bands EU868
1431 * (% style="color:blue" %)**KR920**(%%): frequency bands KR920
1432 * (% style="color:blue" %)**CN470**(%%): frequency bands CN470
1433 * (% style="color:blue" %)**AS923**(%%): frequency bands AS923
1434 * (% style="color:blue" %)**AU915**(%%): frequency bands AU915
1435 * (% style="color:blue" %)**US915**(%%): frequency bands US915
1436 * (% style="color:blue" %)**IN865**(%%): frequency bands IN865
1437 * (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1438 * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1439
1440 = 9.Packing Info =
1441
1442
1443 **Package Includes**:
1444
1445 * RS485-LN x 1
1446 * Stick Antenna for LoRa RF part x 1
1447 * Program cable x 1
1448
1449 **Dimension and weight**:
1450
1451 * Device Size: 13.5 x 7 x 3 cm
1452 * Device Weight: 105g
1453 * Package Size / pcs : 14.5 x 8 x 5 cm
1454 * Weight / pcs : 170g
1455
1456 = 10. FCC Caution for RS485LN-US915 =
1457
1458 (((
1459 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1460 )))
1461
1462 (((
1463 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.
1464 )))
1465
1466 (((
1467
1468 )))
1469
1470 (((
1471 **IMPORTANT NOTE:**
1472 )))
1473
1474 (((
1475 **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:
1476 )))
1477
1478 (((
1479 —Reorient or relocate the receiving antenna.
1480 )))
1481
1482 (((
1483 —Increase the separation between the equipment and receiver.
1484 )))
1485
1486 (((
1487 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1488 )))
1489
1490 (((
1491 —Consult the dealer or an experienced radio/TV technician for help.
1492 )))
1493
1494 (((
1495
1496 )))
1497
1498 (((
1499 **FCC Radiation Exposure Statement:**
1500 )))
1501
1502 (((
1503 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.
1504 )))
1505
1506
1507 = 11. Support =
1508
1509 * (((
1510 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.
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1513 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]].
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