Version 57.19 by Xiaoling on 2022/06/06 09:12
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1 (% style="text-align:center" %)
2 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653266934636-343.png?width=385&height=385&rev=1.1||alt="1653266934636-343.png" height="385" width="385"]]
3
4
5
6 **RS485-LN – RS485 to LoRaWAN Converter User Manual**
7
8
9
10
11 **Table of Contents:**
12
13 * [[1.Introduction>>path:#H1.Introduction]]
14 ** [[1.1 What is RS485-LN RS485 to LoRaWAN Converter>>path:#H1.1A0WhatisRS485-LNRS485toLoRaWANConverter]]
15 ** [[1.2 Specifications>>path:#H1.2A0Specifications]]
16 ** [[1.3 Features>>path:#H1.3Features]]
17 ** [[1.4 Applications>>path:#H1.4A0Applications]]
18 ** [[1.5 Firmware Change log>>path:#H1.5A0FirmwareChangelog]]
19 ** [[1.6 Hardware Change log>>path:#H1.6HardwareChangelog]]
20 * [[2. Power ON Device>>path:#H2.PowerONDevice]]
21 * [[3. Operation Mode>>path:#H3.A0OperationMode]]
22 ** [[3.1 How it works?>>path:#H3.1Howitworks3F]]
23 ** [[3.2 Example to join LoRaWAN network>>path:#H3.2ExampletojoinLoRaWANnetwork]]
24 ** [[3.3 Configure Commands to read data>>path:#H3.3ConfigureCommandstoreaddata]]
25 *** [[3.3.1 onfigure UART settings for RS485 or TTL communication>>path:#H3.3.1onfigureUARTsettingsforRS485orTTLcommunication]]
26 *** [[3.3.2 Configure sensors>>path:#H3.3.2Configuresensors]]
27 *** [[3.3.3 Configure read commands for each sampling>>path:#H3.3.3Configurereadcommandsforeachsampling]]
28 *** [[3.3.4 Compose the uplink payload>>path:#H3.3.4Composetheuplinkpayload]]
29 *** [[3.3.5 Uplink on demand>>path:#H3.3.5Uplinkondemand]]
30 *** [[3.3.6 Uplink on Interrupt>>path:#H3.3.6UplinkonInterrupt]]
31 ** [[3.4 Uplink Payload>>path:#H3.4UplinkPayload]]
32 ** [[3.5 Configure RS485-BL via AT or Downlink>>path:#H3.5ConfigureRS485-BLviaATorDownlink]]
33 *** [[3.5.1 Common Commands>>path:#H3.5.1CommonCommands]]
34 *** [[3.5.2 Sensor related commands>>path:#H3.5.2Sensorrelatedcommands]]
35 *** [[3.5.3 Sensor related commands>>path:#H3.5.3A0Sensorrelatedcommands]]
36 **** [[RS485 Debug Command>>path:#HRS485DebugCommand]]
37 **** [[Set Payload version>>path:#HSetPayloadversion]]
38 **** [[Set RS485 Sampling Commands>>path:#HSetRS485SamplingCommands]]
39 **** [[Fast command to handle MODBUS device>>path:#HFastcommandtohandleMODBUSdevice]]
40 **** [[RS485 command timeout>>path:#HRS485commandtimeout]]
41 **** [[Uplink payload mode>>path:#HUplinkpayloadmode]]
42 **** [[Manually trigger an Uplink>>path:#HManuallytriggeranUplink]]
43 **** [[Clear RS485 Command>>path:#HClearRS485Command]]
44 **** [[Set Serial Communication Parameters>>path:#HSetSerialCommunicationParameters]]
45 ** [[3.6 Listening mode for RS485 network>>path:#H3.6A0ListeningmodeforRS485network]]
46 ** [[3.7 Buttons>>path:#H3.7Buttons]]
47 ** [[3.8 LEDs>>path:#H3.8LEDs]]
48 * [[4. Case Study>>path:#H4.CaseStudy]]
49 * [[5. Use AT Command>>path:#H5.UseATCommand]]
50 ** [[5.1 Access AT Command>>path:#H5.1AccessATCommand]]
51 ** [[5.2 Common AT Command Sequence>>path:#H5.2CommonATCommandSequence]]
52 *** [[5.2.1 Multi-channel ABP mode (Use with SX1301/LG308)>>path:#H5.2.1Multi-channelABPmode28UsewithSX13012FLG30829]]
53 *** [[5.5.2 Single-channel ABP mode (Use with LG01/LG02)>>path:#H5.5.2Single-channelABPmode28UsewithLG012FLG0229]]
54 * [[6. FAQ>>path:#H6.FAQ]]
55 ** [[6.1 How to upgrade the image?>>path:#H6.1Howtoupgradetheimage3F]]
56 ** [[6.2 How to change the LoRa Frequency Bands/Region?>>path:#H6.2HowtochangetheLoRaFrequencyBands2FRegion3F]]
57 ** [[6.3 How many RS485-Slave can RS485-BL connects?>>path:#H6.3HowmanyRS485-SlavecanRS485-BLconnects3F]]
58 ** [[6.4 Compatible question to ChirpStack and TTI LoRaWAN server ?>>path:#H6.4CompatiblequestiontoChirpStackandTTILoRaWANserver3F]]
59 * [[7. Trouble Shooting>>path:#H7.TroubleShooting]]
60 ** [[7.1 Downlink doesn’t work, how to solve it?>>path:#H7.1Downlinkdoesn2019twork2Chowtosolveit3F]]
61 ** [[7.2 Why I can’t join TTN V3 in US915 /AU915 bands?>>path:#H7.2WhyIcan2019tjoinTTNV3inUS9152FAU915bands3F]]
62 * [[8. Order Info>>path:#H8.OrderInfo]]
63 * [[9.Packing Info>>path:#H9.PackingInfo]]
64 * [[10. FCC Caution for RS485LN-US915>>path:#H10.FCCCautionforRS485LN-US915]]
65 * [[11. Support>>path:#H11.Support]]
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67
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70
71
72
73 = 1.Introduction =
74
75 == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
76
77 (((
78 (((
79 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.
80 )))
81
82 (((
83 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.
84 )))
85
86 (((
87 (% 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.
88 )))
89
90 (((
91 (% 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.
92
93 (% 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]]
94 )))
95 )))
96
97 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653267211009-519.png?width=724&height=419&rev=1.1||alt="1653267211009-519.png" height="419" width="724"]]
98
99
100 == 1.2 Specifications ==
101
102
103 **Hardware System:**
104
105 * STM32L072CZT6 MCU
106 * SX1276/78 Wireless Chip 
107 * Power Consumption (exclude RS485 device):
108 ** Idle: 32mA@12v
109 ** 20dB Transmit: 65mA@12v
110
111 **Interface for Model:**
112
113 * RS485
114 * Power Input 7~~ 24V DC. 
115
116 **LoRa Spec:**
117
118 * Frequency Range:
119 ** Band 1 (HF): 862 ~~ 1020 Mhz
120 ** Band 2 (LF): 410 ~~ 528 Mhz
121 * 168 dB maximum link budget.
122 * +20 dBm - 100 mW constant RF output vs.
123 * +14 dBm high efficiency PA.
124 * Programmable bit rate up to 300 kbps.
125 * High sensitivity: down to -148 dBm.
126 * Bullet-proof front end: IIP3 = -12.5 dBm.
127 * Excellent blocking immunity.
128 * Low RX current of 10.3 mA, 200 nA register retention.
129 * Fully integrated synthesizer with a resolution of 61 Hz.
130 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
131 * Built-in bit synchronizer for clock recovery.
132 * Preamble detection.
133 * 127 dB Dynamic Range RSSI.
134 * Automatic RF Sense and CAD with ultra-fast AFC.
135 * Packet engine up to 256 bytes with CRC
136
137 == 1.3 Features ==
138
139 * LoRaWAN Class A & Class C protocol (default Class C)
140 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
141 * AT Commands to change parameters
142 * Remote configure parameters via LoRa Downlink
143 * Firmware upgradable via program port
144 * Support multiply RS485 devices by flexible rules
145 * Support Modbus protocol
146 * Support Interrupt uplink (Since hardware version v1.2)
147
148 == 1.4 Applications ==
149
150 * Smart Buildings & Home Automation
151 * Logistics and Supply Chain Management
152 * Smart Metering
153 * Smart Agriculture
154 * Smart Cities
155 * Smart Factory
156
157 == 1.5 Firmware Change log ==
158
159 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
160
161
162 == 1.6 Hardware Change log ==
163
164 (((
165 (((
166 v1.2: Add External Interrupt Pin.
167
168 v1.0: Release
169
170
171 )))
172 )))
173
174 = 2. Power ON Device =
175
176 (((
177 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
178
179 * Power Source VIN to RS485-LN VIN+
180 * Power Source GND to RS485-LN VIN-
181
182 (((
183 Once there is power, the RS485-LN will be on.
184 )))
185
186 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653268091319-405.png?rev=1.1||alt="1653268091319-405.png"]]
187
188
189 )))
190
191 = 3. Operation Mode =
192
193 == 3.1 How it works? ==
194
195 (((
196 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.
197
198
199 )))
200
201 == 3.2 Example to join LoRaWAN network ==
202
203 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. 
204
205 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653268155545-638.png?width=724&height=334&rev=1.1||alt="1653268155545-638.png" height="334" width="724"]]
206
207
208 (((
209 (((
210 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:
211 )))
212
213 (((
214 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
215 )))
216
217 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653268227651-549.png?width=720&height=592&rev=1.1||alt="1653268227651-549.png" height="592" width="720"]]
218
219 (((
220 The LG308 is already set to connect to (% class="wikiinternallink" %)[[TTN V3 network >>url:https://www.thethingsnetwork.org/]](%%). So what we need to now is only configure the TTN V3:
221 )))
222
223 (((
224 **Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-LN.
225 )))
226
227 (((
228 Each RS485-LN is shipped with a sticker with unique device EUI:
229 )))
230 )))
231
232 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1652953462722-299.png?rev=1.1||alt="1652953462722-299.png"]]
233
234 (((
235 (((
236 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
237 )))
238
239 (((
240 Add APP EUI in the application.
241 )))
242 )))
243
244 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220519174512-1.png?rev=1.1||alt="image-20220519174512-1.png"]]
245
246 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220519174512-2.png?width=720&height=323&rev=1.1||alt="image-20220519174512-2.png" height="323" width="720"]]
247
248 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220519174512-3.png?width=724&height=556&rev=1.1||alt="image-20220519174512-3.png" height="556" width="724"]]
249
250 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220519174512-4.png?rev=1.1||alt="image-20220519174512-4.png"]]
251
252 You can also choose to create the device manually.
253
254 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1652953542269-423.png?width=723&height=710&rev=1.1||alt="1652953542269-423.png" height="710" width="723"]]
255
256 Add APP KEY and DEV EUI
257
258 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1652953553383-907.png?width=724&height=514&rev=1.1||alt="1652953553383-907.png" height="514" width="724"]]
259
260
261 (((
262 **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.
263 )))
264
265 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1652953568895-172.png?width=724&height=232&rev=1.1||alt="1652953568895-172.png" height="232" width="724"]]
266
267
268 == 3.3 Configure Commands to read data ==
269
270 (((
271 (((
272 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>>path:#H3.5ConfigureRS485-BLviaATorDownlink]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
273 )))
274
275 (((
276 (% 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
277
278
279 )))
280 )))
281
282 === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
283
284 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:
285
286 (% border="1" style="background-color:#ffffcc; color:green; width:782px" %)
287 |(% style="width:128px" %)(((
288 **AT Commands**
289 )))|(% style="width:305px" %)(((
290 **Description**
291 )))|(% style="width:346px" %)(((
292 **Example**
293 )))
294 |(% style="width:128px" %)(((
295 AT+BAUDR
296 )))|(% style="width:305px" %)(((
297 Set the baud rate (for RS485 connection). Default Value is: 9600.
298 )))|(% style="width:346px" %)(((
299 (((
300 AT+BAUDR=9600
301 )))
302
303 (((
304 Options: (1200,2400,4800,14400,19200,115200)
305 )))
306 )))
307 |(% style="width:128px" %)(((
308 AT+PARITY
309 )))|(% style="width:305px" %)(((
310 Set UART parity (for RS485 connection)
311 )))|(% style="width:346px" %)(((
312 (((
313 AT+PARITY=0
314 )))
315
316 (((
317 Option: 0: no parity, 1: odd parity, 2: even parity
318 )))
319 )))
320 |(% style="width:128px" %)(((
321 AT+STOPBIT
322 )))|(% style="width:305px" %)(((
323 (((
324 Set serial stopbit (for RS485 connection)
325 )))
326
327 (((
328
329 )))
330 )))|(% style="width:346px" %)(((
331 (((
332 AT+STOPBIT=0 for 1bit
333 )))
334
335 (((
336 AT+STOPBIT=1 for 1.5 bit
337 )))
338
339 (((
340 AT+STOPBIT=2 for 2 bits
341 )))
342 )))
343
344
345 === 3.3.2 Configure sensors ===
346
347 (((
348 (((
349 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.
350 )))
351 )))
352
353 (% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
354 |**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
355 |AT+CFGDEV|(% style="width:418px" %)(((
356 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
357
358 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
359
360 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
361 )))|(% style="width:256px" %)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 **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
383
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
388 Below are examples for the how above AT Commands works.
389
390
391 **AT+COMMANDx : **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
392
393 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
394 |(% style="width:496px" %)(((
395 **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
396
397 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
398
399 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
400 )))
401
402 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.
403
404 In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
405
406
407 **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
408
409 (% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
410 |(% style="width:722px" %)(((
411 **AT+DATACUTx=a,b,c**
412
413 * **a: length for the return of AT+COMMAND**
414 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
415 * **c: define the position for valid value.  **
416 )))
417
418 **Examples:**
419
420 * Grab bytes:
421
422 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602153621-1.png?rev=1.1||alt="image-20220602153621-1.png"]]
423
424
425 * Grab a section.
426
427 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602153621-2.png?rev=1.1||alt="image-20220602153621-2.png"]]
428
429
430 * Grab different sections.
431
432 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602153621-3.png?rev=1.1||alt="image-20220602153621-3.png"]]
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 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1653269759169-150.png?width=716&height=513&rev=1.1||alt="1653269759169-150.png" height="513" width="716"]]
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 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602155039-4.png?rev=1.1||alt="image-20220602155039-4.png"]]
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 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654157178836-407.png?rev=1.1||alt="1654157178836-407.png"]]
511
512
513 === 3.3.5 Uplink on demand ===
514
515 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.
516
517 Downlink control command:
518
519 **0x08 command**: Poll an uplink with current command set in RS485-LN.
520
521 **0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
522
523
524
525 === 3.3.6 Uplink on Interrupt ===
526
527 RS485-LN support external Interrupt uplink since hardware v1.2 release.
528
529 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654157342174-798.png?rev=1.1||alt="1654157342174-798.png"]]
530
531 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.
532
533
534 == 3.4 Uplink Payload ==
535
536 (% border="1" style="background-color:#4bacc6; color:white; width:734px" %)
537 |**Size(bytes)**|(% style="width:120px" %)**2**|(% style="width:116px" %)**1**|(% style="width:386px" %)**Length depends on the return from the commands**
538 |Value|(% style="width:120px" %)(((
539 Battery(mV)
540
541 &
542
543 Interrupt _Flag
544 )))|(% style="width:116px" %)(((
545 PAYLOAD_VER
546
547
548 )))|(% style="width:386px" %)If the valid payload is too long and exceed the maximum support payload length in server, server will show payload not provided in the LoRaWAN server.
549
550 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
551
552
553 == 3.5 Configure RS485-BL via AT or Downlink ==
554
555 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
556
557 There are two kinds of Commands:
558
559 * (% 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>>path:/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
560
561 * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
562
563
564 === 3.5.1 Common Commands ===
565
566 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>>path:/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
567
568
569 === 3.5.2 Sensor related commands ===
570
571 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.
572
573 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602163333-5.png?width=1160&height=263&rev=1.1||alt="image-20220602163333-5.png" height="263" width="1160"]]
574
575 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)
576
577
578 === 3.5.3 Sensor related commands ===
579
580
581
582 ==== **RS485 Debug Command** ====
583
584 This command is used to configure the RS485 devices; they won’t be used during sampling.
585
586 * **AT Command**
587
588 (% class="box infomessage" %)
589 (((
590 **AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
591 )))
592
593 m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
594
595 * **Downlink Payload**
596
597 Format: A8 MM NN XX XX XX XX YY
598
599 Where:
600
601 * MM: 1: add CRC-16/MODBUS ; 0: no CRC
602 * NN: The length of RS485 command
603 * XX XX XX XX: RS485 command total NN bytes
604 * YY: How many bytes will be uplink from the return of this RS485 command,
605 ** if YY=0, RS485-LN will execute the downlink command without uplink;
606 ** if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
607 ** if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
608
609 **Example 1** ~-~-> Configure without ask for uplink (YY=0)
610
611 To connect a Modbus Alarm with below commands.
612
613 * 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.
614
615 * 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.
616
617 So if user want to use downlink command to control to RS485 Alarm, he can use:
618
619 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
620
621 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
622
623 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.
624
625
626 **Example 2** ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
627
628 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
629
630
631 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:
632
633 **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
634
635 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654159460680-153.png?rev=1.1||alt="1654159460680-153.png"]]
636
637
638
639 ==== **Set Payload version** ====
640
641 This is the first byte of the uplink payload. RS485-BL can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
642
643 * **AT Command:**
644
645 (% class="box infomessage" %)
646 (((
647 **AT+PAYVER: Set PAYVER field = 1**
648 )))
649
650 * **Downlink Payload:**
651
652 **0xAE 01**  ~-~-> Set PAYVER field =  0x01
653
654 **0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
655
656
657
658 ==== **Set RS485 Sampling Commands** ====
659
660 AT+COMMANDx or AT+DATACUTx
661
662 These three commands are used to configure how the RS485-LN polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>path:#H3.3.3Configurereadcommandsforeachsampling]].
663
664
665 * **AT Command:**
666
667 (% class="box infomessage" %)
668 (((
669 **AT+COMMANDx: Configure RS485 read command to sensor.**
670 )))
671
672 (% class="box infomessage" %)
673 (((
674 **AT+DATACUTx: Configure how to handle return from RS485 devices.**
675 )))
676
677
678 * **Downlink Payload:**
679
680 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
681
682 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
683
684 Format: AF MM NN LL XX XX XX XX YY
685
686 Where:
687
688 * MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
689 * NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
690 * LL:  The length of AT+COMMAND or AT+DATACUT command
691 * XX XX XX XX: AT+COMMAND or AT+DATACUT command
692 * YY:  If YY=0, RS485-BL will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
693
694 **Example:**
695
696 (% 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
697
698 (% 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**
699
700 (% 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**
701
702
703
704 ==== **Fast command to handle MODBUS device** ====
705
706 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]].
707
708 This command is valid since v1.3 firmware version
709
710 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.
711
712
713 **Example:**
714
715 * AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
716 * 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.
717 * 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.
718
719 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602165351-6.png?rev=1.1||alt="image-20220602165351-6.png"]]
720
721 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602165351-7.png?rev=1.1||alt="image-20220602165351-7.png"]]
722
723
724
725 ==== **RS485 command timeout** ====
726
727 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.
728
729 Default value: 0, range:  0 ~~ 65 seconds
730
731 * **AT Command:**
732
733 (% class="box infomessage" %)
734 (((
735 **AT+CMDDLaa=hex(bb cc)*1000**
736 )))
737
738 **Example:**
739
740 **AT+CMDDL1=1000** to send the open time to 1000ms
741
742
743 * **Downlink Payload:**
744
745 **0x AA aa bb cc**
746
747 Same as: AT+CMDDLaa=hex(bb cc)*1000
748
749 **Example:**
750
751 0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
752
753
754
755 ==== **Uplink payload mode** ====
756
757 Define to use one uplink or multiple uplinks for the sampling.
758
759 The use of this command please see: [[Compose Uplink payload>>path:#H3.3.4Composetheuplinkpayload]]
760
761 * **AT Command:**
762
763 (% class="box infomessage" %)
764 (((
765 **AT+DATAUP=0**
766 )))
767
768 (% class="box infomessage" %)
769 (((
770 **AT+DATAUP=1**
771 )))
772
773
774 * **Downlink Payload:**
775
776 **0xAD 00**  **~-~->** Same as AT+DATAUP=0
777
778 **0xAD 01**  **~-~->** Same as AT+DATAUP=1
779
780
781
782 ==== **Manually trigger an Uplink** ====
783
784 Ask device to send an uplink immediately.
785
786 * **AT Command:**
787
788 No AT Command for this, user can press the (% class="wikiinternallink" %)[[ACT button>>path:#Button]](%%) for 1 second for the same.
789
790
791 * **Downlink Payload:**
792
793 **0x08 FF**, RS485-LN will immediately send an uplink.
794
795
796
797 ==== **Clear RS485 Command** ====
798
799 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
800
801 * **AT Command:**
802
803 **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
804
805 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
806
807 Example screen shot after clear all RS485 commands. 
808
809
810 The uplink screen shot is:
811
812 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654160691922-496.png?rev=1.1||alt="1654160691922-496.png"]][[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png||alt="file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png"]]
813
814
815 * **Downlink Payload:**
816
817 **0x09 aa bb** same as AT+CMDEAR=aa,bb
818
819
820
821 ==== **Set Serial Communication Parameters** ====
822
823 Set the Rs485 serial communication parameters:
824
825 * **AT Command:**
826
827 Set Baud Rate:
828
829 (% class="box infomessage" %)
830 (((
831 **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
832 )))
833
834 Set UART Parity
835
836 (% class="box infomessage" %)
837 (((
838 **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
839 )))
840
841 Set STOPBIT
842
843 (% class="box infomessage" %)
844 (((
845 **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
846 )))
847
848
849 * **Downlink Payload:**
850
851 **A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
852
853 **Example:**
854
855 * A7 01 00 60   same as AT+BAUDR=9600
856 * A7 01 04 80  same as AT+BAUDR=115200
857
858 A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
859
860 A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
861
862
863 == 3.6 Listening mode for RS485 network ==
864
865 This feature support since firmware v1.4
866
867 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.
868
869 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602171200-8.png?width=1007&height=567&rev=1.1||alt="image-20220602171200-8.png" height="567" width="1007"]]
870
871 To enable the listening mode, use can run the command AT+RXMODE.
872
873
874 (% border="1" style="background-color:#ffffcc; width:500px" %)
875 |=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
876 |(% style="width:161px" %)AT+RXMODE=1,10 |(% style="width:337px" %)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.
877 |(% style="width:161px" %)AT+RXMODE=2,500|(% style="width:337px" %)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
878 |(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
879 |(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 ~| cc)
880
881 **Downlink Command:**
882
883 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
884
885
886 **Example**:
887
888 The RS485-LN is set to AT+RXMODE=2,1000
889
890 There is a two Modbus commands in the RS485 network as below:
891
892 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
893
894 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
895
896 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
897
898 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602171200-9.png?rev=1.1||alt="image-20220602171200-9.png"]]
899
900
901 (% 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.
902
903
904 == 3.7 Buttons ==
905
906
907 (% border="1" style="background-color:#f7faff; width:500px" %)
908 |=**Button**|=(% style="width: 1420px;" %)**Feature**
909 |**ACT**|(% style="width:1420px" %)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**
910 |**RST**|(% style="width:1420px" %)Reboot RS485
911 |**PRO**|(% style="width:1420px" %)Use for upload image, see (% class="wikiinternallink" %)[[How to Update Image>>path:#upgrade_image]]
912
913 == 3.8 LEDs ==
914
915 (% border="1" style="background-color:#f7faff; width:500px" %)
916 |=**LEDs**|=**Feature**
917 |**PWR**|Always on if there is power
918 |**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.
919
920 = 4. Case Study =
921
922 User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>path:/xwiki/bin/view/Main/Application%20Note%20%3A%20Communicate%20with%20Different%20Sensors%20-----%20RS485-LN%20%20RS485-BL/]]
923
924
925 = 5. Use AT Command =
926
927 == 5.1 Access AT Command ==
928
929 RS485-BL supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-BL to use AT command, as below.
930
931 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654162355560-817.png?rev=1.1||alt="1654162355560-817.png"]]
932
933
934 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-BL. The default password is 123456. Below is the output for reference:
935
936 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654162368066-342.png?rev=1.1||alt="1654162368066-342.png"]]
937
938
939 More detail AT Command manual can be found at [[AT Command Manual>>path:#3.5ConfigureRS485-BLviaATorDownlink]]
940
941
942 == 5.2 Common AT Command Sequence ==
943
944 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
945
946 If device has not joined network yet:
947
948 (% class="box infomessage" %)
949 (((
950 **AT+FDR**
951 )))
952
953 (% class="box infomessage" %)
954 (((
955 **AT+NJM=0**
956 )))
957
958 (% class="box infomessage" %)
959 (((
960 **ATZ**
961 )))
962
963
964 If device already joined network:
965
966 (% class="box infomessage" %)
967 (((
968 **AT+NJM=0**
969 )))
970
971 (% class="box infomessage" %)
972 (((
973 **ATZ**
974 )))
975
976
977 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
978
979
980 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
981
982 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)Set to ABP mode
983
984 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)Set the Adaptive Data Rate Off
985
986 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%)Set Data Rate
987
988 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
989
990 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) Set transmit frequency to 868.4Mhz
991
992 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
993
994 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
995
996 (% 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.
997
998 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
999
1000
1001 (% style="color:red" %)**Note:**
1002
1003 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1004 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1005 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.
1006 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
1007
1008 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654162478620-421.png?rev=1.1||alt="1654162478620-421.png"]]
1009
1010
1011 = 6. FAQ =
1012
1013 == 6.1 How to upgrade the image? ==
1014
1015 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1016
1017 * Support new features
1018 * For bug fix
1019 * Change LoRaWAN bands.
1020
1021 Below shows the hardware connection for how to upload an image to RS485-LN:
1022
1023 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/1654162535040-878.png?rev=1.1||alt="1654162535040-878.png"]]
1024
1025 **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]].
1026
1027 **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1028
1029 **Step3: **Open flashloader; choose the correct COM port to update.
1030
1031 (% 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.
1032
1033
1034 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602175818-12.png?rev=1.1||alt="image-20220602175818-12.png"]]
1035
1036
1037 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602175848-13.png?rev=1.1||alt="image-20220602175848-13.png"]]
1038
1039
1040 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602175912-14.png?rev=1.1||alt="image-20220602175912-14.png"]]
1041
1042
1043 **Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1044
1045 [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LN%20%E2%80%93%20RS485%20to%20LoRaWAN%20Converter/WebHome/image-20220602175638-10.png?rev=1.1||alt="image-20220602175638-10.png"]]
1046
1047
1048 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1049
1050 User can follow the introduction for [[how to upgrade image>>path:#H6.1Howtoupgradetheimage3F]]. When download the images, choose the required image file for download.
1051
1052
1053 == 6.3 How many RS485-Slave can RS485-BL connects? ==
1054
1055 The RS485-BL can support max 32 RS485 devices. Each uplink command of RS485-BL can support max 16 different RS485 command. So RS485-BL 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>>path:#H3.3.3Configurereadcommandsforeachsampling]].
1056
1057
1058 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1059
1060 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1061
1062 Detail info check this link: [[Set Packet Receiving Response Level>>path:/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.23SetPacketReceivingResponseLevel]]
1063
1064
1065 = 7. Trouble Shooting =
1066
1067 == 7.1 Downlink doesn’t work, how to solve it? ==
1068
1069 Please see this link for debug: [[LoRaWAN Communication Debug>>path:/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/]]
1070
1071
1072 == 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
1073
1074 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>path:/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H2.NoticeofUS9152FCN4702FAU915Frequencyband]]
1075
1076
1077 = 8. Order Info =
1078
1079 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1080
1081 (% style="color:blue" %)**XXX:**
1082
1083 * (% style="color:blue" %)**EU433**(%%): frequency bands EU433
1084 * (% style="color:blue" %)**EU868**(%%): frequency bands EU868
1085 * (% style="color:blue" %)**KR920**(%%): frequency bands KR920
1086 * (% style="color:blue" %)**CN470**(%%): frequency bands CN470
1087 * (% style="color:blue" %)**AS923**(%%): frequency bands AS923
1088 * (% style="color:blue" %)**AU915**(%%): frequency bands AU915
1089 * (% style="color:blue" %)**US915**(%%): frequency bands US915
1090 * (% style="color:blue" %)**IN865**(%%): frequency bands IN865
1091 * (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1092 * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1093
1094 = 9.Packing Info =
1095
1096
1097 **Package Includes**:
1098
1099 * RS485-LN x 1
1100 * Stick Antenna for LoRa RF part x 1
1101 * Program cable x 1
1102
1103 **Dimension and weight**:
1104
1105 * Device Size: 13.5 x 7 x 3 cm
1106 * Device Weight: 105g
1107 * Package Size / pcs : 14.5 x 8 x 5 cm
1108 * Weight / pcs : 170g
1109
1110 = 10. FCC Caution for RS485LN-US915 =
1111
1112 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1113
1114 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.
1115
1116
1117 **IMPORTANT NOTE:**
1118
1119 **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:
1120
1121 —Reorient or relocate the receiving antenna.
1122
1123 —Increase the separation between the equipment and receiver.
1124
1125 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1126
1127 —Consult the dealer or an experienced radio/TV technician for help.
1128
1129
1130 **FCC Radiation Exposure Statement:**
1131
1132 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.
1133
1134
1135 = 11. Support =
1136
1137 * 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.
1138 * 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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