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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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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 === 3.3.2 Configure sensors ===
345
346 (((
347 (((
348 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.
349 )))
350 )))
351
352 (% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
353 |**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
354 |AT+CFGDEV|(% style="width:418px" %)(((
355 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
356
357 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
358
359 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
360 )))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
361
362 === 3.3.3 Configure read commands for each sampling ===
363
364 (((
365 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.
366
367 To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
368
369 This section describes how to achieve above goals.
370
371 During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
372
373
374 **Each RS485 commands include two parts:**
375
376 ~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.
377
378 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.
379
380 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
381
382
383 After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
384
385
386 Below are examples for the how above AT Commands works.
387
388
389 **AT+COMMANDx : **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
390
391 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
392 |(% style="width:496px" %)(((
393 **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
394
395 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
396
397 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
398 )))
399
400 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.
401
402 In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
403
404
405 **AT+DATACUTx : **This command defines how to handle the return from AT+COMMANDx, max return length is 45 bytes.
406
407 (% border="1" style="background-color:#4bacc6; color:white; width:725px" %)
408 |(% style="width:722px" %)(((
409 **AT+DATACUTx=a,b,c**
410
411 * **a: length for the return of AT+COMMAND**
412 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
413 * **c: define the position for valid value.  **
414 )))
415
416 **Examples:**
417
418 * Grab bytes:
419
420 [[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"]]
421
422
423 * Grab a section.
424
425 [[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"]]
426
427
428 * Grab different sections.
429
430 [[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"]]
431
432
433 )))
434
435 === 3.3.4 Compose the uplink payload ===
436
437 (((
438 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.**
439
440
441 )))
442
443 (((
444 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
445
446
447 )))
448
449 (((
450 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
451 )))
452
453 (((
454 Final Payload is
455 )))
456
457 (((
458 (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
459 )))
460
461 (((
462 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
463 )))
464
465 [[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"]]
466
467
468 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
469
470
471 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
472
473 Final Payload is
474
475 (% style="color:#4f81bd" %)**Battery Info+PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
476
477
478 1. PAYVER: Defined by AT+PAYVER
479 1. PAYLOAD COUNT: Total how many uplinks of this sampling.
480 1. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
481 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
482
483 [[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"]]
484
485
486 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
487
488 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
489
490 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
491
492 DATA3=the rest of Valid value of RETURN10= **30**
493
494
495 (% 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:
496
497 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
498
499 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
500
501 * For US915 band, max 11 bytes for each uplink.
502
503 ~* For all other bands: max 51 bytes for each uplink.
504
505
506 Below are the uplink payloads:
507
508 [[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"]]
509
510
511 === 3.3.5 Uplink on demand ===
512
513 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.
514
515 Downlink control command:
516
517 **0x08 command**: Poll an uplink with current command set in RS485-LN.
518
519 **0xA8 command**: Send a command to RS485-LN and uplink the output from sensors.
520
521
522
523 === 3.3.6 Uplink on Interrupt ===
524
525 RS485-LN support external Interrupt uplink since hardware v1.2 release.
526
527 [[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"]]
528
529 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.
530
531
532 == 3.4 Uplink Payload ==
533
534 (% border="1" style="background-color:#4bacc6; color:white; width:734px" %)
535 |**Size(bytes)**|(% style="width:120px" %)**2**|(% style="width:116px" %)**1**|(% style="width:386px" %)**Length depends on the return from the commands**
536 |Value|(% style="width:120px" %)(((
537 Battery(mV)
538
539 &
540
541 Interrupt _Flag
542 )))|(% style="width:116px" %)(((
543 PAYLOAD_VER
544
545
546 )))|(% 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.
547
548 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
549
550
551 == 3.5 Configure RS485-BL via AT or Downlink ==
552
553 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
554
555 There are two kinds of Commands:
556
557 * (% 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/]]
558
559 * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
560
561 === 3.5.1 Common Commands ===
562
563 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/]]
564
565
566 === 3.5.2 Sensor related commands ===
567
568 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.
569
570 [[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"]]
571
572 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)
573
574
575 === 3.5.3 Sensor related commands ===
576
577
578
579 ==== **RS485 Debug Command** ====
580
581 This command is used to configure the RS485 devices; they won’t be used during sampling.
582
583 * **AT Command**
584
585 (% class="box infomessage" %)
586 (((
587 **AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**
588 )))
589
590 m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
591
592 * **Downlink Payload**
593
594 Format: A8 MM NN XX XX XX XX YY
595
596 Where:
597
598 * MM: 1: add CRC-16/MODBUS ; 0: no CRC
599 * NN: The length of RS485 command
600 * XX XX XX XX: RS485 command total NN bytes
601 * YY: How many bytes will be uplink from the return of this RS485 command,
602 ** if YY=0, RS485-LN will execute the downlink command without uplink;
603 ** if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
604 ** if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
605
606 **Example 1** ~-~-> Configure without ask for uplink (YY=0)
607
608 To connect a Modbus Alarm with below commands.
609
610 * 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.
611
612 * 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.
613
614 So if user want to use downlink command to control to RS485 Alarm, he can use:
615
616 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
617
618 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
619
620 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.
621
622
623 **Example 2** ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
624
625 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
626
627
628 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:
629
630 **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
631
632 [[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"]]
633
634
635
636 ==== **Set Payload version** ====
637
638 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.
639
640 * **AT Command:**
641
642 (% class="box infomessage" %)
643 (((
644 **AT+PAYVER: Set PAYVER field = 1**
645 )))
646
647 * **Downlink Payload:**
648
649 **0xAE 01**  ~-~-> Set PAYVER field =  0x01
650
651 **0xAE 0F**   ~-~-> Set PAYVER field =  0x0F
652
653
654
655 ==== **Set RS485 Sampling Commands** ====
656
657 AT+COMMANDx or AT+DATACUTx
658
659 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]].
660
661
662 * **AT Command:**
663
664 (% class="box infomessage" %)
665 (((
666 **AT+COMMANDx: Configure RS485 read command to sensor.**
667 )))
668
669 (% class="box infomessage" %)
670 (((
671 **AT+DATACUTx: Configure how to handle return from RS485 devices.**
672 )))
673
674
675 * **Downlink Payload:**
676
677 **0xAF** downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
678
679 (% style="color:red" %)**Note**(%%): if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.
680
681 Format: AF MM NN LL XX XX XX XX YY
682
683 Where:
684
685 * MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
686 * NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
687 * LL:  The length of AT+COMMAND or AT+DATACUT command
688 * XX XX XX XX: AT+COMMAND or AT+DATACUT command
689 * 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.
690
691 **Example:**
692
693 (% 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
694
695 (% 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**
696
697 (% 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**
698
699
700
701 ==== **Fast command to handle MODBUS device** ====
702
703 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]].
704
705 This command is valid since v1.3 firmware version
706
707 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.
708
709
710 **Example:**
711
712 * AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2 are not configure (0,0,0). So RS485-LN.
713 * 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.
714 * 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.
715
716 [[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"]]
717
718 [[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"]]
719
720
721
722 ==== **RS485 command timeout** ====
723
724 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.
725
726 Default value: 0, range:  0 ~~ 65 seconds
727
728 * **AT Command:**
729
730 (% class="box infomessage" %)
731 (((
732 **AT+CMDDLaa=hex(bb cc)*1000**
733 )))
734
735 **Example:**
736
737 **AT+CMDDL1=1000** to send the open time to 1000ms
738
739
740 * **Downlink Payload:**
741
742 **0x AA aa bb cc**
743
744 Same as: AT+CMDDLaa=hex(bb cc)*1000
745
746 **Example:**
747
748 0xAA 01 00 01  ~-~-> Same as **AT+CMDDL1=1000 ms**
749
750
751
752 ==== **Uplink payload mode** ====
753
754 Define to use one uplink or multiple uplinks for the sampling.
755
756 The use of this command please see: [[Compose Uplink payload>>path:#H3.3.4Composetheuplinkpayload]]
757
758 * **AT Command:**
759
760 (% class="box infomessage" %)
761 (((
762 **AT+DATAUP=0**
763 )))
764
765 (% class="box infomessage" %)
766 (((
767 **AT+DATAUP=1**
768 )))
769
770
771 * **Downlink Payload:**
772
773 **0xAD 00**  **~-~->** Same as AT+DATAUP=0
774
775 **0xAD 01**  **~-~->** Same as AT+DATAUP=1
776
777
778
779 ==== **Manually trigger an Uplink** ====
780
781 Ask device to send an uplink immediately.
782
783 * **AT Command:**
784
785 No AT Command for this, user can press the [[ACT button>>path:#H3.7Buttons]] for 1 second for the same.
786
787
788 * **Downlink Payload:**
789
790 **0x08 FF**, RS485-LN will immediately send an uplink.
791
792
793
794 ==== **Clear RS485 Command** ====
795
796 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
797
798 * **AT Command:**
799
800 **AT+CMDEAR=mm,nn**   mm: start position of erase ,nn: stop position of erase
801
802 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
803
804 Example screen shot after clear all RS485 commands. 
805
806
807 The uplink screen shot is:
808
809 [[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"]]
810
811
812 * **Downlink Payload:**
813
814 **0x09 aa bb** same as AT+CMDEAR=aa,bb
815
816
817
818 ==== **Set Serial Communication Parameters** ====
819
820 Set the Rs485 serial communication parameters:
821
822 * **AT Command:**
823
824 Set Baud Rate:
825
826 (% class="box infomessage" %)
827 (((
828 **AT+BAUDR=9600**    ~/~/ Options: (1200,2400,4800,14400,19200,115200)
829 )))
830
831 Set UART Parity
832
833 (% class="box infomessage" %)
834 (((
835 **AT+PARITY=0**    ~/~/ Option: 0: no parity, 1: odd parity, 2: even parity
836 )))
837
838 Set STOPBIT
839
840 (% class="box infomessage" %)
841 (((
842 **AT+STOPBIT=0**    ~/~/ Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
843 )))
844
845
846 * **Downlink Payload:**
847
848 **A7 01 aa bb**: Same  AT+BAUDR=hex(aa bb)*100
849
850 **Example:**
851
852 * A7 01 00 60   same as AT+BAUDR=9600
853 * A7 01 04 80  same as AT+BAUDR=115200
854
855 A7 02 aa: Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
856
857 A7 03 aa: Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
858
859
860 == 3.6 Listening mode for RS485 network ==
861
862 This feature support since firmware v1.4
863
864 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.
865
866 [[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"]]
867
868 To enable the listening mode, use can run the command AT+RXMODE.
869
870
871 (% border="1" style="background-color:#ffffcc; width:500px" %)
872 |=(% style="width: 161px;" %)**Command example:**|=(% style="width: 337px;" %)**Function**
873 |(% 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.
874 |(% 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
875 |(% style="width:161px" %)AT+RXMODE=0,0|(% style="width:337px" %)Disable listening mode. This is the default settings.
876 |(% style="width:161px" %) |(% style="width:337px" %)A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 ~| cc)
877
878 **Downlink Command:**
879
880 **0xA6 aa bb cc ** same as AT+RXMODE=aa,(bb<<8 | cc)
881
882
883 **Example**:
884
885 The RS485-LN is set to AT+RXMODE=2,1000
886
887 There is a two Modbus commands in the RS485 network as below:
888
889 The Modbus master send a command: (% style="background-color:#ffc000" %)01 03 00 00 00 02 c4 0b
890
891 And Modbus slave reply with: (% style="background-color:green" %)01 03 04 00 00 00 00 fa 33
892
893 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
894
895 [[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"]]
896
897
898 (% 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.
899
900
901 == 3.7 Buttons ==
902
903
904 (% border="1" style="background-color:#f7faff; width:500px" %)
905 |=**Button**|=(% style="width: 1420px;" %)**Feature**
906 |**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**
907 |**RST**|(% style="width:1420px" %)Reboot RS485
908 |**PRO**|(% style="width:1420px" %)Use for upload image, see [[How to Update Image>>path:#H6.1Howtoupgradetheimage3F]]
909
910 == 3.8 LEDs ==
911
912 (% border="1" style="background-color:#f7faff; width:500px" %)
913 |=**LEDs**|=**Feature**
914 |**PWR**|Always on if there is power
915 |**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.
916
917 = 4. Case Study =
918
919 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/]]
920
921
922 = 5. Use AT Command =
923
924 == 5.1 Access AT Command ==
925
926 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.
927
928 [[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"]]
929
930
931 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:
932
933 [[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"]]
934
935
936 More detail AT Command manual can be found at [[AT Command Manual>>url:https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
937
938
939 == 5.2 Common AT Command Sequence ==
940
941 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
942
943 If device has not joined network yet:
944
945 (% class="box infomessage" %)
946 (((
947 **AT+FDR**
948 )))
949
950 (% class="box infomessage" %)
951 (((
952 **AT+NJM=0**
953 )))
954
955 (% class="box infomessage" %)
956 (((
957 **ATZ**
958 )))
959
960
961 If device already joined network:
962
963 (% class="box infomessage" %)
964 (((
965 **AT+NJM=0**
966 )))
967
968 (% class="box infomessage" %)
969 (((
970 **ATZ**
971 )))
972
973
974 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
975
976
977 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
978
979 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%)Set to ABP mode
980
981 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%)Set the Adaptive Data Rate Off
982
983 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%)Set Data Rate
984
985 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
986
987 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%) Set transmit frequency to 868.4Mhz
988
989 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
990
991 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
992
993 (% 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.
994
995 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
996
997
998 (% style="color:red" %)**Note:**
999
1000 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1001 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1002 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.
1003 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
1004
1005 [[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"]]
1006
1007
1008 = 6. FAQ =
1009
1010 == 6.1 How to upgrade the image? ==
1011
1012 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1013
1014 * Support new features
1015 * For bug fix
1016 * Change LoRaWAN bands.
1017
1018 Below shows the hardware connection for how to upload an image to RS485-LN:
1019
1020 [[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"]]
1021
1022 **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]].
1023
1024 **Step2**: Download the [[LT Image files>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/image/]].
1025
1026 **Step3: **Open flashloader; choose the correct COM port to update.
1027
1028 (((
1029 (% 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.
1030 )))
1031
1032
1033 [[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"]]
1034
1035
1036 [[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"]]
1037
1038
1039 [[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"]]
1040
1041
1042 **Notice**: In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:
1043
1044 [[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"]]
1045
1046
1047 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1048
1049 User can follow the introduction for [[how to upgrade image>>path:#H6.1Howtoupgradetheimage3F]]. When download the images, choose the required image file for download.
1050
1051
1052 == 6.3 How many RS485-Slave can RS485-BL connects? ==
1053
1054 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]].
1055
1056
1057 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1058
1059 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1060
1061 Detail info check this link: [[Set Packet Receiving Response Level>>path:/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H7.23SetPacketReceivingResponseLevel]]
1062
1063
1064 = 7. Trouble Shooting =
1065
1066 == 7.1 Downlink doesn’t work, how to solve it? ==
1067
1068 Please see this link for debug: [[LoRaWAN Communication Debug>>path:/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/]]
1069
1070
1071 == 7.2 Why I can’t join TTN V3 in US915 /AU915 bands? ==
1072
1073 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>path:/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H2.NoticeofUS9152FCN4702FAU915Frequencyband]]
1074
1075
1076 = 8. Order Info =
1077
1078 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1079
1080 (% style="color:blue" %)**XXX:**
1081
1082 * (% style="color:blue" %)**EU433**(%%): frequency bands EU433
1083 * (% style="color:blue" %)**EU868**(%%): frequency bands EU868
1084 * (% style="color:blue" %)**KR920**(%%): frequency bands KR920
1085 * (% style="color:blue" %)**CN470**(%%): frequency bands CN470
1086 * (% style="color:blue" %)**AS923**(%%): frequency bands AS923
1087 * (% style="color:blue" %)**AU915**(%%): frequency bands AU915
1088 * (% style="color:blue" %)**US915**(%%): frequency bands US915
1089 * (% style="color:blue" %)**IN865**(%%): frequency bands IN865
1090 * (% style="color:blue" %)**RU864**(%%): frequency bands RU864
1091 * (% style="color:blue" %)**KZ865**(%%): frequency bands KZ865
1092
1093 = 9.Packing Info =
1094
1095
1096 **Package Includes**:
1097
1098 * RS485-LN x 1
1099 * Stick Antenna for LoRa RF part x 1
1100 * Program cable x 1
1101
1102 **Dimension and weight**:
1103
1104 * Device Size: 13.5 x 7 x 3 cm
1105 * Device Weight: 105g
1106 * Package Size / pcs : 14.5 x 8 x 5 cm
1107 * Weight / pcs : 170g
1108
1109 = 10. FCC Caution for RS485LN-US915 =
1110
1111 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1112
1113 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.
1114
1115
1116 **IMPORTANT NOTE:**
1117
1118 **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:
1119
1120 —Reorient or relocate the receiving antenna.
1121
1122 —Increase the separation between the equipment and receiver.
1123
1124 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1125
1126 —Consult the dealer or an experienced radio/TV technician for help.
1127
1128
1129 **FCC Radiation Exposure Statement:**
1130
1131 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.
1132
1133
1134 = 11. Support =
1135
1136 * 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.
1137 * 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]].