Version 99.1 by Bei Jinggeng on 2022/12/06 09:48
Show last authors
1 (% aria-label="1653266934636-343.png image widget" contenteditable="false" role="region" tabindex="-1" %)
2 (((
3 (% data-widget="image" style="text-align:center" %)
4 [[image:1653266934636-343.png||height="385" width="385"]](% title="Click and drag to resize" %)​
5
6 (% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
7 )))
8
9
10
11
12
13
14
15 **Table of Contents:**
16
17 {{toc/}}
18
19
20 (% aria-label="macro:toc widget" contenteditable="false" role="region" tabindex="-1" %)
21 (((
22 (% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
23 )))
24
25
26
27
28
29
30
31 = 1.Introduction =
32
33 == 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
34
35
36 (((
37 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.
38 )))
39
40 (((
41 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.
42 )))
43
44 (((
45 (% 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.
46 )))
47
48 (((
49 (% 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.
50 )))
51
52 (((
53 (% 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]]
54 )))
55
56
57 (% aria-label="1653267211009-519.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653267211009-519.png||data-widget="image" height="419" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
58
59
60 == 1.2 Specifications ==
61
62
63 (% style="color:#037691" %)**Hardware System:**
64
65 * STM32L072xxxx MCU
66 * SX1276/78 Wireless Chip 
67 * Power Consumption (exclude RS485 device):
68 ** Idle: 32mA@12v
69 ** 20dB Transmit: 65mA@12v
70
71 (% style="color:#037691" %)**Interface for Model:**
72
73 * RS485
74 * Power Input 7~~ 24V DC. 
75
76 (% style="color:#037691" %)**LoRa Spec:**
77
78 * Frequency Range:
79 ** Band 1 (HF): 862 ~~ 1020 Mhz
80 ** Band 2 (LF): 410 ~~ 528 Mhz
81 * 168 dB maximum link budget.
82 * +20 dBm - 100 mW constant RF output vs.
83 * +14 dBm high efficiency PA.
84 * Programmable bit rate up to 300 kbps.
85 * High sensitivity: down to -148 dBm.
86 * Bullet-proof front end: IIP3 = -12.5 dBm.
87 * Excellent blocking immunity.
88 * Low RX current of 10.3 mA, 200 nA register retention.
89 * Fully integrated synthesizer with a resolution of 61 Hz.
90 * FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
91 * Built-in bit synchronizer for clock recovery.
92 * Preamble detection.
93 * 127 dB Dynamic Range RSSI.
94 * Automatic RF Sense and CAD with ultra-fast AFC.
95 * Packet engine up to 256 bytes with CRC
96
97 == 1.3 Features ==
98
99
100 * LoRaWAN Class A & Class C protocol (default Class C)
101 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864/MA869
102 * AT Commands to change parameters
103 * Remote configure parameters via LoRa Downlink
104 * Firmware upgradable via program port
105 * Support multiply RS485 devices by flexible rules
106 * Support Modbus protocol
107 * Support Interrupt uplink (Since hardware version v1.2)
108
109 == 1.4 Applications ==
110
111
112 * Smart Buildings & Home Automation
113 * Logistics and Supply Chain Management
114 * Smart Metering
115 * Smart Agriculture
116 * Smart Cities
117 * Smart Factory
118
119 == 1.5 Firmware Change log ==
120
121
122 [[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
123
124
125
126 == 1.6 Hardware Change log ==
127
128
129 (((
130 (((
131 (((
132 v1.2: Add External Interrupt Pin.
133 )))
134
135 (((
136 v1.0: Release
137 )))
138
139
140 )))
141 )))
142
143 = 2. Power ON Device =
144
145
146 (((
147 The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
148
149 * Power Source VIN to RS485-LN VIN+
150 * Power Source GND to RS485-LN VIN-
151
152 (((
153 Once there is power, the RS485-LN will be on.
154 )))
155
156 (% aria-label="1653268091319-405.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268091319-405.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
157
158
159 )))
160
161 = 3. Operation Mode =
162
163 == 3.1 How it works? ==
164
165
166 (((
167 (((
168 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.
169 )))
170
171
172 )))
173
174 == 3.2 Example to join LoRaWAN network ==
175
176
177 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. 
178
179
180 (% aria-label="1653268155545-638.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268155545-638.png||data-widget="image" height="334" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
181
182
183 (((
184 (((
185 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:
186 )))
187
188 (((
189 485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
190
191
192 )))
193
194 (% aria-label="1653268227651-549.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1653268227651-549.png||data-widget="image" height="592" width="720"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
195
196
197 (((
198 The LG308 is already set to connect to [[TTN V3 network >>path:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:
199
200
201 )))
202
203 (((
204 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from RS485-LN.
205 )))
206
207 (((
208 Each RS485-LN is shipped with a sticker with unique device EUI:
209 )))
210 )))
211
212 (% aria-label="1652953462722-299.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953462722-299.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
213
214
215 (((
216 (((
217 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
218
219
220 )))
221
222 (((
223 **Add APP EUI in the application.**
224 )))
225 )))
226
227 (% aria-label="image-20220519174512-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-1.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
228
229 (% aria-label="image-20220519174512-2.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-2.png||data-widget="image" height="323" width="720"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
230
231 (% aria-label="image-20220519174512-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-3.png||data-widget="image" height="556" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
232
233 (% aria-label="image-20220519174512-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220519174512-4.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
234
235
236 (% title="Click and drag to resize" %)​
237
238 You can also choose to create the device manually.
239
240 (% aria-label="1652953542269-423.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953542269-423.png||data-widget="image" height="710" width="723"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
241
242
243
244 **Add APP KEY and DEV EUI**
245
246 (% aria-label="1652953553383-907.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953553383-907.png||data-widget="image" height="514" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
247
248
249
250 (((
251 (% style="color:blue" %)**Step 2**(%%): Power on RS485-LN and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
252
253
254 )))
255
256 (% aria-label="1652953568895-172.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1652953568895-172.png||data-widget="image" height="232" width="724"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
257
258
259 == 3.3 Configure Commands to read data ==
260
261
262 (((
263 (((
264 (((
265 There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>||anchor="H3.5ConfigureRS485-LNviaATorDownlink"]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
266
267
268 )))
269 )))
270
271 (((
272 (((
273 (% 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**
274 )))
275
276
277 )))
278 )))
279
280 === 3.3.1 Configure UART settings for RS485 or TTL communication ===
281
282
283 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:
284
285
286 (% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
287 |=(% style="width: 110px;" %)(((
288 **AT Commands**
289 )))|=(% style="width: 210px;" %)(((
290 **Description**
291 )))|=(% style="width: 190px;" %)(((
292 **Example**
293 )))
294 |(% style="width:110px" %)(((
295 AT+BAUDR
296 )))|(% style="width:190px" %)(((
297 Set the baud rate (for RS485 connection). Default Value is: 9600.
298 )))|(% style="width:190px" %)(((
299 (((
300 AT+BAUDR=9600
301 )))
302
303 (((
304 Options: (1200,2400,4800,14400,19200,115200)
305 )))
306 )))
307 |(% style="width:110px" %)(((
308 AT+PARITY
309 )))|(% style="width:190px" %)(((
310 Set UART parity (for RS485 connection)
311 )))|(% style="width:190px" %)(((
312 (((
313 AT+PARITY=0
314 )))
315
316 (((
317 Option: 0: no parity, 1: odd parity, 2: even parity
318 )))
319 )))
320 |(% style="width:110px" %)(((
321 AT+STOPBIT
322 )))|(% style="width:190px" %)(((
323 (((
324 Set serial stopbit (for RS485 connection)
325 )))
326
327 (((
328
329 )))
330 )))|(% style="width:190px" %)(((
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 (((
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 )))
354
355 (% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:510px" %)
356 |=(% style="width: 110px;" %)**AT Commands**|=(% style="width: 210px;" %)**Description**|=(% style="width: 190px;" %)**Example**
357 |AT+CFGDEV|(% style="width:110px" %)(((
358 (((
359 This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
360 )))
361
362 (((
363 AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
364 )))
365
366 (((
367 mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
368 )))
369 )))|(% style="width:190px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
370
371 === 3.3.3 Configure read commands for each sampling ===
372
373
374 (((
375 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.
376
377 To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
378
379 This section describes how to achieve above goals.
380
381 During each sampling, the RS485-LN can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
382
383
384 (% style="color:#037691" %)**Each RS485 commands include two parts:**
385
386
387 ~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.
388
389 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.
390
391 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
392
393
394 After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
395
396 Below are examples for the how above AT Commands works.
397
398
399 (% style="color:#037691" %)**AT+COMMANDx **(%%)**: **This command will be sent to RS485 devices during each sampling, Max command length is 14 bytes. The grammar is:
400
401 (% border="1" style="background-color:#4bacc6; color:white; width:499px" %)
402 |(% style="width:496px" %)(((
403 **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
404
405 **xx xx xx xx xx xx xx xx xx xx xx xx: The RS485 command to be sent**
406
407 **m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command**
408 )))
409
410 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.
411
412 In the RS485-LN, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
413
414
415 (% style="color:#037691" %)**AT+DATACUTx **(%%)**: **This command defines how to handle the return from AT+COMMANDx, max return length is 100 bytes.
416
417 (% border="1" style="background-color:#4bacc6; color:white; width:510px" %)
418 |(% style="width:510px" %)(((
419 **AT+DATACUTx=a,b,c**
420
421 * **a: length for the return of AT+COMMAND**
422 * **b:1: grab valid value by byte, max 6 bytes. 2: grab valid value by bytes section, max 3 sections.**
423 * **c: define the position for valid value.  **
424 )))
425
426 **Examples:**
427
428
429 * (% style="color:#037691" %)**Grab bytes**
430
431 (% aria-label="image-20220602153621-1.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-1.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
432
433
434
435 * (% style="color:#037691" %)**Grab a section**
436
437 (% aria-label="image-20220602153621-2.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-2.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
438
439
440
441 * (% style="color:#037691" %)**Grab different sections**
442
443 (% aria-label="image-20220602153621-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602153621-3.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
444
445
446 )))
447
448 === 3.3.4 Compose the uplink payload ===
449
450
451 (((
452 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.**
453
454
455 )))
456
457 (((
458 (% style="color:#037691" %)**Examples: AT+DATAUP=0**
459
460
461 )))
462
463 (((
464 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**A SIGNLE UPLINK**.
465 )))
466
467 (((
468 Final Payload is (% style="color:#4f81bd" %)**Battery Info+PAYVER + VALID Value from RETURN1 + Valid Value from RETURN2 + … + RETURNx**
469 )))
470
471 (((
472 Where PAYVER is defined by AT+PAYVER, below is an example screen shot.
473
474
475 )))
476
477 [[image:image-20220929111027-1.png||height="509" width="685"]](% title="Click and drag to resize" %)​
478
479
480 (% style="color:#037691" %)**Examples: AT+DATAUP=1**
481
482
483 Compose the uplink payload with value returns in sequence and send with (% style="color:red" %)**Multiply UPLINKs**.
484
485 Final Payload is (% style="color:#4f81bd" %)**PAYVER + PAYLOAD COUNT + PAYLOAD# + DATA**
486
487
488 ~1. PAYVER: Defined by AT+PAYVER
489
490 2. PAYLOAD COUNT: Total how many uplinks of this sampling.
491
492 3. PAYLOAD#: Number of this uplink. (from 0,1,2,3…,to PAYLOAD COUNT)
493
494 4. 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
495
496
497 (% aria-label="image-20220602155039-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602155039-4.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
498
499
500 So totally there will be 3 uplinks for this sampling, each uplink include 8 bytes DATA
501
502 DATA1=RETURN1 Valid Value + the first two of Valid value of RETURN10= **20 20 0a 33 90 41 02 aa**
503
504 DATA2=3^^rd^^ ~~ 10^^th^^ byte of Valid value of RETURN10= **05 81 0a 20 20 20 20 2d**
505
506 DATA3=the rest of Valid value of RETURN10= **30**
507
508
509 (% 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:**
510
511
512 ~* For AU915/AS923 bands, if UplinkDwell time=0, max 51 bytes for each uplink.
513
514 * For AU915/AS923 bands, if UplinkDwell time=0, max 11 bytes for each uplink.
515
516 * For US915 band, max 11 bytes for each uplink.
517
518 ~* For all other bands: max 51 bytes for each uplink.
519
520
521 (% style="color:red" %)** When AT+DATAUP=1, the maximum number of segments is 15, and the maximum total number of bytes is 1500;**
522
523 (% style="color:red" %)** When AT+DATAUP=1 and AT+ADR=0, the maximum number of bytes of each payload is determined by the DR value. (Since v1.4.0)**
524
525
526
527 Below are the uplink payloads:
528
529
530 (% aria-label="1654157178836-407.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157178836-407.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
531
532
533 === 3.3.5 Uplink on demand ===
534
535
536 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.
537
538 (% style="color:blue" %)**Downlink control command:**
539
540 (% style="color:#4472c4" %)** 0x08 command**(%%): Poll an uplink with current command set in RS485-LN.
541
542 (% style="color:#4472c4" %)** 0xA8 command**(%%): Send a command to RS485-LN and uplink the output from sensors.
543
544
545 === 3.3.6 Uplink on Interrupt ===
546
547
548 RS485-LN support external Interrupt uplink since hardware v1.2 release.
549
550
551 (% aria-label="1654157342174-798.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654157342174-798.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
552
553 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.
554
555
556 == 3.4 Uplink Payload ==
557
558
559 (% border="1" cellspacing="5" style="background-color:#ffffcc; color:green; width:500px" %)
560 |=(% scope="row" style="width: 60px;" %)(((
561 Size(bytes)
562 )))|(% style="width:80px" %)1|(% style="width:360px" %)(((
563 Length depends on the return from the commands
564 )))
565 |=(% style="width: 90px;" %)(((
566 Value
567 )))|(% style="width:114px" %)(((
568 PAYLOAD_VER
569 )))|(% style="width:353px" %)(((
570 If the valid payload is too long and exceed the maximum
571
572 support payload length in server, server will show payload not
573
574 provided in the LoRaWAN server.
575 )))
576
577 (% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
578
579 (% title="Click and drag to resize" %)​
580
581 Below is the decoder for the first 3 bytes. The rest bytes are dynamic depends on different RS485 sensors.
582
583
584 == 3.5 Configure RS485-LN via AT or Downlink ==
585
586
587 (((
588 User can configure RS485-LN via AT Commands or LoRaWAN Downlink Commands
589 )))
590
591 (((
592 There are two kinds of Commands:
593 )))
594
595 * (((
596 (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
597 )))
598
599 * (((
600 (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for RS485-LN.  User can see these commands below:
601 )))
602
603 (((
604
605 )))
606
607
608
609 === 3.5.1 Common Commands ===
610
611
612 They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.3, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
613
614
615 === 3.5.2 Downlink Response(Since firmware v1.4) ===
616
617
618 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.
619
620
621 (% aria-label="image-20220602163333-5.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602163333-5.png||data-widget="image" height="263" width="1160"]]
622
623 (% title="Click and drag to resize" %)​
624
625 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)
626
627
628 === 3.5.3 Sensor related commands ===
629
630
631
632 ==== (% style="color:blue" %)**RS485 Debug Command**(%%) ====
633
634
635 (((
636 This command is used to configure the RS485 devices; they won't be used during sampling. Max Length of AT+CFGDEV is **40 bytes**.
637 )))
638
639 (((
640 * (% style="color:#037691" %)**AT Command**
641
642 (((
643 (% style="color:#4472c4" %)** AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m**  (%%) m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
644 )))
645 )))
646
647 (((
648
649 )))
650
651 * (((
652 (% style="color:#037691" %)**Downlink Payload**
653 )))
654
655 (((
656 Format: (% style="color:#4472c4" %)** A8 MM NN XX XX XX XX YY**
657 )))
658
659 (((
660 Where:
661 )))
662
663 * (((
664 MM: 1: add CRC-16/MODBUS ; 0: no CRC
665 )))
666 * (((
667 NN: The length of RS485 command
668 )))
669 * (((
670 XX XX XX XX: RS485 command total NN bytes
671 )))
672 * (((
673 (((
674 YY: How many bytes will be uplink from the return of this RS485 command,
675 )))
676
677 * (((
678 if YY=0, RS485-LN will execute the downlink command without uplink;
679 )))
680 * (((
681 if YY>0, RS485-LN will uplink total YY bytes from the output of this RS485 command; Fport=200
682 )))
683 * (((
684 if YY=FF, RS485-LN will uplink RS485 output with the downlink command content; Fport=200.
685 )))
686 )))
687
688 (((
689
690
691 (% style="color:blue" %)**Example 1:**  (%%) ~-~-> Configure without ask for uplink (YY=0)
692 )))
693
694 (((
695 To connect a Modbus Alarm with below commands.
696 )))
697
698 * (((
699 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.
700 )))
701
702 * (((
703 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.
704 )))
705
706 (((
707
708
709 So if user want to use downlink command to control to RS485 Alarm, he can use:
710 )))
711
712 (((
713 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 01 00**(%%): to activate the RS485 Alarm
714 )))
715
716 (((
717 (% style="color:#4f81bd" %)**A8 01 06 0A 05 00 04 00 00 00**(%%): to deactivate the RS485 Alarm
718 )))
719
720 (((
721 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.
722 )))
723
724 (((
725
726 )))
727
728 (((
729 (% style="color:blue" %)**Example 2:**  (%%) ~-~-> Configure with requesting uplink and original downlink command (**YY=FF**)
730 )))
731
732 (((
733 User in IoT server send a downlink command: (% style="color:#4f81bd" %)**A8 01 06 0A 08 00 04 00 01 YY**
734 )))
735
736 (((
737
738 )))
739
740 (((
741 (((
742 RS485-LN got this downlink command and send (% style="color:#4f81bd" %)**0A 08 00 04 00 01 **(%%)to Modbus network. One of the RS485 sensor in the network send back Modbus reply **0A 08 00 04 00 00**. RS485-LN get this reply and combine with the original downlink command and uplink. The uplink message is:  **A8** (% style="color:#4f81bd" %)**0A 08 00 04 00  **(% style="color:red" %)**01 06** ** **(% style="color:green" %)**0A 08 00 04 00 00**
743 )))
744
745
746 )))
747
748 (((
749 (% aria-label="1654159460680-153.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654159460680-153.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
750 )))
751
752
753
754
755 ==== (% style="color:blue" %)**Set Payload version**(%%) ====
756
757
758 (((
759 This is the first byte of the uplink payload. RS485-LN can connect to different sensors. User can set the PAYVER field to tell server how to decode the current payload.
760 )))
761
762 (((
763 * (% style="color:#037691" %)**AT Command:**
764
765 (% style="color:#4472c4" %)** AT+PAYVER:    ** (%%) Set PAYVER field = 1
766
767
768 )))
769
770 * (((
771 (% style="color:#037691" %)**Downlink Payload:**
772 )))
773
774 (((
775 (% style="color:#4472c4" %)** 0xAE 01** (%%) ~-~->  Set PAYVER field =  0x01
776 )))
777
778 (((
779 (% style="color:#4472c4" %)** 0xAE 0F**   (%%) ~-~->  Set PAYVER field =  0x0F
780 )))
781
782
783 **1 )  Add the interrupt flag at the highest bit of the Payver byte, that is, Byte7 of the first byte. (Since v1.4.0)**
784
785
786 [[image:image-20220824145428-2.png||height="168" width="1300"]]
787
788
789
790 **2 )  if the data intercepted by AT+DATACUT or AT+MBFUN is empty, it will display NULL, and the payload will be filled with n FFs.**
791
792
793 [[image:image-20220824145428-3.png||height="308" width="1200"]]
794
795
796
797
798 ==== (% style="color:blue" %)**Set RS485 Sampling Commands**(%%) ====
799
800
801 (((
802 AT+COMMANDx or AT+DATACUTx
803 )))
804
805 (((
806 These three commands are used to configure how the RS485-LN polling data from Modbus device. Detail of usage please see : [[polling RS485 device>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
807 )))
808
809 (((
810
811 )))
812
813 * (((
814 (% style="color:#037691" %)**AT Command:**
815 )))
816
817 (% style="color:#4472c4" %)** AT+COMMANDx:    ** (%%) Configure RS485 read command to sensor.
818
819 (% style="color:#4472c4" %)** AT+DATACUTx:        **(%%) Configure how to handle return from RS485 devices.
820
821
822 * (((
823 (% style="color:#037691" %)**Downlink Payload:**
824 )))
825
826 (((
827 (% style="color:#4472c4" %)** 0xAF**(%%) downlink command can be used to set AT+COMMANDx or AT+DATACUTx.
828
829
830 )))
831
832 (((
833 (% style="color:red" %)**Note : if user use AT+COMMANDx to add a new command, he also need to send AT+DATACUTx downlink.**
834
835
836 )))
837
838 (((
839 Format: (% style="color:#4472c4" %)** AF MM NN LL XX XX XX XX YY**
840 )))
841
842 (((
843 Where:
844 )))
845
846 * (((
847 MM: the ATCOMMAND or AT+DATACUT to be set. Value from 01 ~~ 0F,
848 )))
849 * (((
850 NN:  0: no CRC; 1: add CRC-16/MODBUS ; 2: set the AT+DATACUT value.
851 )))
852 * (((
853 LL:  The length of AT+COMMAND or AT+DATACUT command
854 )))
855 * (((
856 XX XX XX XX: AT+COMMAND or AT+DATACUT command
857 )))
858 * (((
859 YY:  If YY=0, RS485-LN will execute the downlink command without uplink; if YY=1, RS485-LN will execute an uplink after got this command.
860 )))
861
862 (((
863
864
865 **Example:**
866 )))
867
868 (((
869 (% 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
870 )))
871
872 (((
873 (% 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**
874 )))
875
876 (((
877 (% 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**
878 )))
879
880
881
882
883 ==== (% style="color:blue" %)**Fast command to handle MODBUS device**(%%) ====
884
885
886 (((
887 (% style="color:#4472c4" %)** AT+MBFUN**(%%) is valid since v1.3 firmware version. The command is for fast configure to read Modbus devices. It is only valid for the devices which follow the [[MODBUS-RTU protocol>>url:https://www.modbustools.com/modbus.html]].
888 )))
889
890 (((
891 This command is valid since v1.3 firmware version
892 )))
893
894 (((
895 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.
896 )))
897
898 (((
899
900 )))
901
902 (((
903 **Example:**
904 )))
905
906 * (((
907 AT+MBFUN=1 and AT+DATACUT1/AT+DATACUT2  are not configure (0,0,0). So RS485-LN.
908 )))
909 * (((
910 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.
911 )))
912 * (((
913 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.
914
915
916 )))
917
918 (% aria-label="image-20220602165351-6.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-6.png||data-widget="image"]]
919
920 (% title="Click and drag to resize" %)​
921
922 (% aria-label="image-20220602165351-7.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602165351-7.png||data-widget="image"]](% title="Click and drag to resize" %)​
923
924
925
926
927 ==== (% style="color:blue" %)**RS485 command timeout**(%%) ====
928
929
930 (((
931 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.
932 )))
933
934 (((
935 Default value: 0, range:  0 ~~ 65 seconds
936 )))
937
938 (((
939 * (% style="color:#037691" %)** AT Command:**
940
941 (% style="color:#4472c4" %)** AT+CMDDLaa=hex(bb cc)*1000**
942 )))
943
944 (((
945
946
947 **Example:**
948 )))
949
950 (((
951 (% style="color:#4472c4" %)** AT+CMDDL1=1000** (%%)to send the open time to 1000ms
952 )))
953
954 (((
955
956 )))
957
958 * (((
959 (% style="color:#037691" %)** Downlink Payload:**
960 )))
961
962 (((
963 (% style="color:#4472c4" %)** 0x AA aa bb cc**(%%) Same as: AT+CMDDLaa=hex(bb cc)*1000
964 )))
965
966 (((
967
968
969 **Example:**
970 )))
971
972 (((
973 **0xAA 01 00 01**  ~-~-> Same as  **AT+CMDDL1=1000 ms**
974 )))
975
976
977
978
979 ==== (% style="color:blue" %)**Uplink payload mode**(%%) ====
980
981
982 (((
983 Define to use one uplink or multiple uplinks for the sampling.
984 )))
985
986 (((
987 The use of this command please see: [[Compose Uplink payload>>||anchor="H3.3.4Composetheuplinkpayload"]]
988
989
990 )))
991
992 (((
993 * (% style="color:#037691" %)** AT Command:**
994
995 (% style="color:#4472c4" %)** AT+DATAUP=0**
996
997 (% style="color:#4472c4" %)** AT+DATAUP=1**
998
999
1000 )))
1001
1002 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1003
1004 Each uplink is sent to the server at 20-second intervals when segmented.
1005
1006
1007 * (((
1008 (% style="color:#037691" %)** Downlink Payload:**
1009 )))
1010
1011 (% style="color:#4472c4" %)** 0xAD 00** (%%) **~-~->** Same as AT+DATAUP=0
1012
1013 (% style="color:#4472c4" %)** 0xAD 01**  (%%) **~-~->** Same as AT+DATAUP=1  ~/~/Each uplink is sent to the server one after the other as it is segmented.
1014
1015
1016 * (((
1017 (% style="color:#037691" %)** AT Command:**
1018 )))
1019
1020 (% style="color:#4472c4" %)** AT+DATAUP=1,Timeout**
1021
1022
1023 * (((
1024 (% style="color:#037691" %)** Downlink Payload:**
1025 )))
1026
1027 (% style="color:#4472c4" %)** 0xAD 01 00 00 14** (%%) **~-~->** Same as AT+DATAUP=1，20000  ~/~/  (00 00 14 is 20 seconds)
1028
1029 Each uplink is sent to the server at 20-second intervals when segmented.
1030
1031
1032
1033
1034 ==== (% style="color:blue" %)**Manually trigger an Uplink**(%%) ====
1035
1036
1037 (((
1038 Ask device to send an uplink immediately.
1039 )))
1040
1041 * (((
1042 (% style="color:#037691" %)** AT Command:**
1043 )))
1044
1045 (((
1046 No AT Command for this, user can press the [[ACT button>>||anchor="H3.7Buttons"]] for 1 second for the same.
1047 )))
1048
1049 (((
1050
1051 )))
1052
1053 * (((
1054 (% style="color:#037691" %)** Downlink Payload:**
1055 )))
1056
1057 (((
1058 (% style="color:#4472c4" %)** 0x08 FF**(%%), RS485-LN will immediately send an uplink.
1059 )))
1060
1061
1062
1063
1064 ==== (% style="color:blue" %)**Clear RS485 Command**(%%) ====
1065
1066
1067 (((
1068 The AT+COMMANDx and AT+DATACUTx settings are stored in special location, user can use below command to clear them.
1069
1070
1071 )))
1072
1073 * (((
1074 (% style="color:#037691" %)** AT Command:**
1075 )))
1076
1077 (((
1078 (% style="color:#4472c4" %)** AT+CMDEAR=mm,nn** (%%) mm: start position of erase ,nn: stop position of erase
1079 )))
1080
1081 (((
1082
1083
1084 Etc. AT+CMDEAR=1,10 means erase AT+COMMAND1/AT+DATACUT1 to AT+COMMAND10/AT+DATACUT10
1085 )))
1086
1087 (((
1088 Example screen shot after clear all RS485 commands. 
1089 )))
1090
1091 (((
1092
1093 )))
1094
1095 (((
1096 The uplink screen shot is:
1097 )))
1098
1099 (% aria-label="1654160691922-496.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654160691922-496.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1100
1101
1102 * (((
1103 (% style="color:#037691" %)** Downlink Payload:**
1104 )))
1105
1106 (((
1107 (% style="color:#4472c4" %)** 0x09 aa bb** (%%) same as AT+CMDEAR=aa,bb
1108 )))
1109
1110
1111
1112
1113 ==== (% style="color:blue" %)**Set Serial Communication Parameters**(%%) ====
1114
1115
1116 (((
1117 Set the Rs485 serial communication parameters:
1118 )))
1119
1120 (((
1121 (% style="color:#037691" %)**AT Command:**
1122 )))
1123
1124 (((
1125 * Set Baud Rate
1126 )))
1127
1128 (% style="color:#4472c4" %)** AT+BAUDR=9600** (%%) ~/~/  Options: (200~~115200)  When using low baud rate or receiving multiple bytes, you need to use AT+CMDDL to increase the receive timeout (the default receive timeout is 400ms), otherwise data will be lost
1129
1130
1131 (((
1132 * Set UART Parity
1133 )))
1134
1135 (% style="color:#4472c4" %)** AT+PARITY=0** (%%) ~/~/  Option: 0: no parity, 1: odd parity, 2: even parity
1136
1137
1138 (((
1139 * Set STOPBIT
1140 )))
1141
1142 (% style="color:#4472c4" %)** AT+STOPBIT=0** (%%) ~/~/  Option: 0 for 1bit; 1 for 1.5 bit ; 2 for 2 bits
1143
1144
1145 (((
1146 (% style="color:#037691" %)**Downlink Payload:**
1147 )))
1148
1149 (((
1150 (% style="color:#4472c4" %)** A7 01 aa bb**:   (%%) Same  AT+BAUDR=hex(aa bb)*100
1151 )))
1152
1153 (((
1154 **Example:**
1155 )))
1156
1157 * (((
1158 A7 01 00 60  same as AT+BAUDR=9600
1159 )))
1160 * (((
1161 A7 01 04 80  same as AT+BAUDR=115200
1162 )))
1163
1164 (((
1165 * A7 02 aa:  Same as  AT+PARITY=aa  (aa value: 00 , 01 or 02)
1166 )))
1167
1168 (((
1169 * A7 03 aa:  Same as  AT+STOPBIT=aa  (aa value: 00 , 01 or 02)
1170 )))
1171
1172
1173
1174
1175 ==== (% style="color:blue" %)**Configure Databit (Since Version 1.4.0)**(%%) ====
1176
1177
1178 * (((
1179 (% style="color:#037691" %)** AT Command:**
1180 )))
1181
1182 (% style="color:#4472c4" %)** AT+DATABIT=7    **(%%)~/~/ Set the data bits to 7
1183
1184 (% style="color:#4472c4" %)** AT+DATABIT=8    **(%%)~/~/ Set the data bits to 8
1185
1186 * (((
1187 (% style="color:#037691" %)**Downlink Payload:**
1188 )))
1189
1190 (% style="color:#4472c4" %)** A7 04 07**(%%): Same as  AT+DATABIT=7
1191
1192 (% style="color:#4472c4" %)** A7 04 08**(%%): Same as  AT+DATABIT=8
1193
1194
1195
1196 ==== (% style="color:blue" %)**Encrypted payload**(%%) ====
1197
1198 (((
1199
1200 )))
1201
1202 * (((
1203 (% style="color:#037691" %)** AT Command:**
1204 )))
1205
1206 (% style="color:#4472c4" %)** AT+DECRYPT=1  ** (%%) ~/~/ The payload is uploaded without encryption
1207
1208 (% style="color:#4472c4" %)** AT+DECRYPT=0  ** (%%) ~/~/ Encrypt when uploading payload (default)
1209
1210
1211
1212
1213 ==== (% style="color:blue" %)**Get sensor value**(%%) ====
1214
1215
1216 * (((
1217 (% style="color:#037691" %)** AT Command:**
1218 )))
1219
1220 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=0  **(%%) ~/~/ The serial port gets the reading of the current sensor
1221
1222 (% style="color:#4472c4" %)** AT+GETSENSORVALUE=1  **(%%) ~/~/ The serial port gets the current sensor reading and uploads it.
1223
1224
1225
1226
1227 ==== (% style="color:blue" %)**Resets the downlink packet count**(%%) ====
1228
1229
1230 * (((
1231 (% style="color:#037691" %)** AT Command:**
1232 )))
1233
1234 (% style="color:#4472c4" %)** AT+DISFCNTCHECK=0  **(%%) ~/~/  When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node will no longer receive downlink packets (default)
1235
1236 (% style="color:#4472c4" %)** AT+DISFCNTCHECK=1  **(%%) ~/~/  When the downlink packet count sent by the server is less than the node downlink packet count or exceeds 16384, the node resets the downlink packet count and keeps it consistent with the server downlink packet count.
1237
1238
1239
1240
1241 ==== (% style="color:blue" %)**When the limit bytes are exceeded, upload in batches**(%%) ====
1242
1243
1244 * (((
1245 (% style="color:#037691" %)** AT Command:**
1246 )))
1247
1248 (% style="color:#4472c4" %)** AT+DISMACANS=0**  (%%) ~/~/  When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of 11 bytes (DR0 of US915, DR2 of AS923, DR2 of AU195), the node will send a packet with a payload of 00 and a port of 4. (default)
1249
1250 (% style="color:#4472c4" %)** AT+DISMACANS=1**   (%%) ~/~/  When the MACANS of the reply server plus the payload exceeds the maximum number of bytes of the DR, the node will ignore the MACANS and not reply, and only upload the payload part.
1251
1252
1253 * (((
1254 (% style="color:#037691" %)** Downlink Payload:**
1255 )))
1256
1257 (% style="color:#4472c4" %)** 0x21 00 01 ** (%%) ~/~/ Set  the DISMACANS=1
1258
1259
1260
1261
1262 ==== (% style="color:blue" %)** Copy downlink to uplink **(%%) ====
1263
1264
1265 * (((
1266 (% style="color:#037691" %)** AT Command:**
1267 )))
1268
1269 (% style="color:#4472c4" %)** AT+RPL=5**  (%%) ~/~/ After receiving the package from the server, it will immediately upload the content of the package to the server, the port number is 100.
1270
1271 Example：**aa xx xx xx xx**         ~/~/ aa indicates whether the configuration has changed, 00 is yes, 01 is no; xx xx xx xx are the bytes sent.
1272
1273
1274 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173747-6.png?width=1124&height=165&rev=1.1||alt="image-20220823173747-6.png"]]
1275
1276 For example, sending 11 22 33 44 55 66 77 will return invalid configuration 00 11 22 33 44 55 66 77.
1277
1278
1279
1280 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173833-7.png?width=1124&height=149&rev=1.1||alt="image-20220823173833-7.png"]]
1281
1282 For example, if 01 00 02 58 is issued, a valid configuration of 01 01 00 02 58 will be returned.
1283
1284
1285
1286
1287 ==== (% style="color:blue" %)**Query version number and frequency band 、TDC**(%%) ====
1288
1289
1290 (((
1291 * (% style="color:#037691" %)**Downlink Payload:**
1292
1293 (% style="color:#4472c4" %)** 26 01  ** (%%) ~/~/  Downlink 26 01 can query device upload frequency, frequency band, software version number, TDC time.
1294 )))
1295
1296
1297 Example：
1298
1299
1300 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/image-20220823173929-8.png?width=1205&height=76&rev=1.1||alt="image-20220823173929-8.png"]]
1301
1302
1303
1304
1305 ==== (% style="color:blue" %)** Monitor RS485 communication of other devices**(%%) ====
1306
1307
1308 * (((
1309 (% style="color:#037691" %)** AT Command:**
1310 )))
1311
1312 (% style="color:#4472c4" %)**AT+RXMODE=1,10**    (%%) ~/~/ When the RS485-LN receives more than 10 bytes from the RS485, it immediately sends the uplink of the received data.
1313
1314 (% style="color:#4472c4" %)**AT+RXMODE=2,500    ** (%%) ~/~/  RS485-LN uploads data as uplink from the first byte received by RS485 to the data received within 500ms after that.
1315
1316 (% style="color:#4472c4" %)**AT+RXMODE=0,0  ** (%%) ~/~/  Disable this mode (default)
1317
1318
1319 * (((
1320 (% style="color:#037691" %)**Downlink Payload:**
1321 )))
1322
1323 (% style="color:#4472c4" %)** A6 aa bb bb               ** (%%) ~/~/ same as AT+RXMODE=aa,bb
1324
1325 [[image:image-20220824144240-1.png]]
1326
1327
1328 == 3.6 Listening mode for RS485 network ==
1329
1330
1331 (((
1332 This feature support since firmware v1.4
1333 )))
1334
1335 (((
1336 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.
1337
1338
1339 )))
1340
1341 (% aria-label="image-20220602171200-8.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602171200-8.png||data-widget="image" height="567" width="1007"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
1342
1343 (% title="Click and drag to resize" %)​
1344
1345 (((
1346 To enable the listening mode, use can run the command (% style="color:#4472c4" %)** AT+RXMODE**.
1347 )))
1348
1349 (((
1350
1351 )))
1352
1353 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:500px" %)
1354 |=(% style="width: 100px;" %)(((
1355 **Command example**
1356 )))|=(% style="width: 400px;" %)(((
1357 **Function**
1358 )))
1359 |(% style="width:100px" %)(((
1360 AT+RXMODE=1,10
1361 )))|(% style="width:400px" %)(((
1362 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.
1363 )))
1364 |(% style="width:100px" %)(((
1365 AT+RXMODE=2,500
1366 )))|(% style="width:400px" %)(((
1367 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
1368 )))
1369 |(% style="width:100px" %)(((
1370 AT+RXMODE=0,0
1371 )))|(% style="width:400px" %)(((
1372 Disable listening mode. This is the default settings.
1373 )))
1374 |(% style="width:100px" %)(((
1375
1376 )))|(% style="width:400px" %)(((
1377 A6 aa bb cc  same as AT+RXMODE=aa,(bb<<8 | cc)
1378 )))
1379
1380 (((
1381
1382
1383 (% style="color:#037691" %)**Downlink Command:**
1384 )))
1385
1386 (((
1387 (% style="color:#4472c4" %)** 0xA6 aa bb cc **(%%) same as AT+RXMODE=aa,(bb<<8 | cc)
1388 )))
1389
1390 (((
1391
1392 )))
1393
1394 (((
1395 **Example**:
1396 )))
1397
1398 (((
1399 The RS485-LN is set to AT+RXMODE=2,1000
1400 )))
1401
1402 (((
1403 There is a two Modbus commands in the RS485 network as below:
1404 )))
1405
1406 (((
1407 The Modbus master send a command: (% style="background-color:#ffc000" %)**01 03 00 00 00 02 c4 0b**
1408 )))
1409
1410 (((
1411 And Modbus slave reply with: (% style="background-color:green" %)**01 03 04 00 00 00 00 fa 33**
1412 )))
1413
1414 (((
1415 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**
1416
1417
1418 )))
1419
1420 (((
1421 (% aria-label="image-20220602171200-9.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602171200-9.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1422 )))
1423
1424 (((
1425
1426 )))
1427
1428 (((
1429 (((
1430 (% 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.**
1431 )))
1432 )))
1433
1434
1435 == 3.7 Buttons ==
1436
1437
1438 (% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
1439 |=(% style="width: 50px;" %)**Button**|=(% style="width: 380px;" %)**Feature**
1440 |(% style="width:50px" %)**ACT**|(% style="width:361px" %)If RS485 joined in network, press this button for more than 1 second, RS485 will upload a packet, and the SYS LED will give a (% style="color:blue" %)**Blue blink**
1441 |(% style="width:50px" %)**RST**|(% style="width:361px" %)Reboot RS485
1442 |(% style="width:50px" %)**PRO**|(% style="width:361px" %)Use for upload image, see [[How to Update Image>>||anchor="H6.1Howtoupgradetheimage3F"]]
1443
1444 == 3.8 LEDs ==
1445
1446
1447 (% border="1.5" cellspacing="4" style="background-color:#ffffcc; width:430px" %)
1448 |=(% style="width: 50px;" %)**LEDs**|=(% style="width: 380px;" %)**Feature**
1449 |**PWR**|Always on if there is power
1450 |**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.
1451
1452 = 4. Case Study =
1453
1454
1455 User can check this URL for some case studies: [[APP RS485 COMMUNICATE WITH SENSORS>>doc:Main.Application Note \: Communicate with Different Sensors ----- RS485-LN RS485-BL.WebHome]]
1456
1457
1458 = 5. Use AT Command =
1459
1460 == 5.1 Access AT Command ==
1461
1462
1463 (((
1464 RS485-LN supports AT Command set. User can use a USB to TTL adapter plus the 3.5mm Program Cable to connect to RS485-LN to use AT command, as below.
1465
1466
1467 )))
1468
1469 (% aria-label="1654162355560-817.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162355560-817.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1470
1471
1472
1473 (((
1474 In PC, User needs to set (% style="color:blue" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console of RS485-LN. The default password is 123456. Below is the output for reference:
1475
1476
1477 )))
1478
1479 (% aria-label="1654162368066-342.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162368066-342.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1480
1481
1482 (((
1483 More detail AT Command manual can be found at [[AT Command Manual>>https://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/]]
1484 )))
1485
1486
1487 == 5.2 Common AT Command Sequence ==
1488
1489 === 5.2.1 Multi-channel ABP mode (Use with SX1301/LG308) ===
1490
1491
1492 If device has not joined network yet:
1493
1494 * (% style="color:#037691" %)**AT+FDR**
1495 * (% style="color:#037691" %)**AT+NJM=0**
1496 * (% style="color:#037691" %)**ATZ**
1497
1498 (((
1499
1500
1501 If device already joined network:
1502
1503 * (% style="color:#037691" %)**AT+NJM=0**
1504 * (% style="color:#037691" %)**ATZ**
1505
1506
1507 )))
1508
1509
1510
1511 === 5.5.2 Single-channel ABP mode (Use with LG01/LG02) ===
1512
1513
1514 (% style="background-color:#dcdcdc" %)**AT+FDR** (%%) Reset Parameters to Factory Default, Keys Reserve
1515
1516 (% style="background-color:#dcdcdc" %)**AT+NJM=0 **(%%) Set to ABP mode
1517
1518 (% style="background-color:#dcdcdc" %)**AT+ADR=0** (%%) Set the Adaptive Data Rate Off
1519
1520 (% style="background-color:#dcdcdc" %)**AT+DR=5**   (%%) Set Data Rate
1521
1522 (% style="background-color:#dcdcdc" %)**AT+TDC=60000** (%%) Set transmit interval to 60 seconds
1523
1524 (% style="background-color:#dcdcdc" %)**AT+CHS=868400000**(%%)  Set transmit frequency to 868.4Mhz
1525
1526 (% style="background-color:#dcdcdc" %)**AT+RX2FQ=868400000** (%%) Set RX2Frequency to 868.4Mhz (according to the result from server)
1527
1528 (% style="background-color:#dcdcdc" %)**AT+RX2DR=5**  (%%) Set RX2DR to match the downlink DR from server. see below
1529
1530 (% 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.
1531
1532 (% style="background-color:#dcdcdc" %)**ATZ**       (%%) Reset MCU
1533
1534
1535 (% style="color:red" %)**Note:**
1536
1537 (((
1538 (% style="color:red" %)1. Make sure the device is set to ABP mode in the IoT Server.
1539 2. Make sure the LG01/02 gateway RX frequency is exactly the same as AT+CHS setting.
1540 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.
1541 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
1542
1543
1544 )))
1545
1546 (% aria-label="1654162478620-421.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162478620-421.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1547
1548
1549 = 6. FAQ =
1550
1551 == 6.1 How to upgrade the image? ==
1552
1553
1554 (((
1555 The RS485-LN LoRaWAN Controller is shipped with a 3.5mm cable, the cable is used to upload image to RS485-LN to:
1556 )))
1557
1558 * (((
1559 Support new features
1560 )))
1561 * (((
1562 For bug fix
1563 )))
1564 * (((
1565 Change LoRaWAN bands.
1566 )))
1567
1568 (((
1569 Below shows the hardware connection for how to upload an image to RS485-LN:
1570 )))
1571
1572 (% aria-label="1654162535040-878.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1654162535040-878.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]]
1573
1574 (% title="Click and drag to resize" %)​
1575
1576 (((
1577 (% style="color:blue" %)**Step1**(%%)**:** Download [[flash loader>>url:https://www.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-programmers/flasher-stm32.html]].
1578
1579
1580 )))
1581
1582 (((
1583 (% style="color:blue" %)**Step2**(%%)**:** Download the [[LT Image files>>url:https://www.dropbox.com/sh/g99v0fxcltn9r1y/AACP33wo_ZQLsxW2MJ70oUoba/RS485-LN/Firmware?dl=0&subfolder_nav_tracking=1]].
1584
1585
1586 )))
1587
1588 (((
1589 (% style="color:blue" %)**Step3**(%%)**: **Open flashloader; choose the correct COM port to update.
1590
1591
1592 )))
1593
1594 (((
1595 (((
1596 (((
1597 (% 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.
1598 )))
1599 )))
1600 )))
1601
1602
1603 (% aria-label="image-20220602175818-12.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175818-12.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1604
1605
1606 (% aria-label="image-20220602175848-13.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175848-13.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1607
1608
1609 (% aria-label="image-20220602175912-14.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175912-14.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1610
1611
1612 (% style="color:red" %)**Notice**: **In case user has lost the program cable. User can hand made one from a 3.5mm cable. The pin mapping is:**
1613
1614 (% aria-label="image-20220602175638-10.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20220602175638-10.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
1615
1616
1617 == 6.2 How to change the LoRa Frequency Bands/Region? ==
1618
1619
1620 User can follow the introduction for [[how to upgrade image>>||anchor="H6.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
1621
1622
1623 == 6.3 How many RS485-Slave can RS485-LN connects? ==
1624
1625
1626 The RS485-LN can support max 32 RS485 devices. Each uplink command of RS485-LN can support max 16 different RS485 command. So RS485-LN can support max 16 RS485 devices pre-program in the device for uplink. For other devices no pre-program, user can use the [[downlink message (type code 0xA8) to poll their info>>||anchor="H3.3.3Configurereadcommandsforeachsampling"]].
1627
1628
1629 == 6.4 Compatible question to ChirpStack and TTI LoRaWAN server ? ==
1630
1631
1632 When user need to use with ChirpStack or TTI. Please set AT+RPL=4.
1633
1634 Detail info check this link: [[Set Packet Receiving Response Level>>doc:Main.End Device AT Commands and Downlink Command.WebHome||anchor="H7.23SetPacketReceivingResponseLevel"]]
1635
1636
1637 == 6.5 Can i use point to point communication for RS485-LN? ==
1638
1639
1640 Yes, please updating point-to-point [[firmware>>https://www.dropbox.com/sh/g99v0fxcltn9r1y/AACP33wo_ZQLsxW2MJ70oUoba/RS485-LN/Firmware?dl=0&subfolder_nav_tracking=1]]，then refer [[Point to Point Communication for RS485-LN>>Point to Point Communication for RS485-LN]].
1641
1642
1643 == 6.6 How to Use RS485-LN  to connect to RS232 devices? ==
1644
1645
1646 [[Use RS485-BL or RS485-LN to connect to RS232 devices. - DRAGINO>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/RS485%20to%20RS232/]]
1647
1648
1649 == 6.7 How to judge whether there is a problem with the set COMMAND ==
1650
1651 === 6.7.1 Introduce: ===
1652
1653
1654 Users can use below the structure to fast debug the communication between RS485BL and RS485-LN. The principle is to put the PC in the RS485 network and sniff the packet between Modbus MTU and RS485-BL/LN. We can use this way to:
1655
1656 1. Test if Modbus-MTU works with PC commands.
1657 1. Check if RS485-LN sent the expected command to Mobus-MTU
1658 1. Check if Modbus-MTU return back the expected result to RS485-LN.
1659 1. If both b) and c) has issue, we can compare PC’s output and RS485-LN output.
1660
1661 [[image:image-20221130104310-1.png||height="380" width="680"]]
1662
1663
1664 Example Connection:
1665
1666 [[image:image-20221130104310-2.png]]
1667
1668
1669 === 6.7.2 Set up PC to monitor RS485 network With Serial tool ===
1670
1671
1672 (% style="color:red" %)**Note: Receive and send set to hex mode**
1673
1674 [[image:image-20221130104310-3.png||height="616" width="714"]]
1675
1676
1677 === 6.7.3 With ModRSsim2: ===
1678
1679
1680 (% style="color:blue" %)**(1) Select serial port MODBUS RS-232**
1681
1682 [[image:image-20221130104310-4.png||height="390" width="865"]]
1683
1684
1685 (% style="color:blue" %)**(2) Click the serial port icon**
1686
1687 [[image:image-20221130104310-5.png||height="392" width="870"]]
1688
1689
1690 (% style="color:blue" %)**(3) After selecting the correct serial port and baud rate, click ok**
1691
1692 [[image:image-20221130104310-6.png]]
1693
1694
1695 (% style="color:blue" %)**(4) Click the comms.**
1696
1697 [[image:image-20221130104310-7.png||height="376" width="835"]]
1698
1699 (% class="wikigeneratedid" id="HRunRS485-LN2FBLcommandandmonitorifitiscorrect." %)
1700 **Run RS485-LN/BL command and monitor if it is correct.**
1701
1702
1703 === 6.7.4 Example – Test the CFGDEV command ===
1704
1705
1706 RS485-LN sent below command:
1707
1708 (% style="color:blue" %)**AT+CFGDEV=01 03 20 00 01 85 c0,1**(%%) to RS485 network, and PC is able to get this command and return commands from MTU to show in the serial tool.
1709
1710
1711 We can see the output from the Serial port tool to analyze. And check if they are expected result.
1712
1713 [[image:image-20221130104310-8.png||height="214" width="797"]]
1714
1715
1716 We can also use (% style="color:blue" %)**ModRSsim2**(%%) to see the output.
1717
1718 [[image:image-20221130104310-9.png||height="531" width="729"]]
1719
1720
1721 === 6.7.5 Example – Test CMD command sets. ===
1722
1723
1724 Run (% style="color:blue" %)**AT+SENSORVALUE=1**(%%) to test the CMD commands set in RS485-LN.
1725
1726
1727 (% style="color:blue" %)**Serial port tool:**
1728
1729 [[image:image-20221130104310-10.png||height="339" width="844"]]
1730
1731
1732 (% style="color:blue" %)**ModRSsim2:**
1733
1734 [[image:image-20221130104310-11.png||height="281" width="962"]]
1735
1736
1737 === 6.7.6 Test with PC ===
1738
1739
1740 If there is still have problem to set up correctly the commands between RS485-LN and MTU. User can test the correct RS485 command set in PC and compare with the RS485 command sent out via RS485-LN. as long as both commands are the same, the MTU should return correct result.
1741
1742
1743 Or User can send the working commands set in PC serial tool to Dragino Support to check what should be configured in RS485-LN.
1744
1745 (% style="color:blue" %)**Connection method：**
1746
1747 [[image:image-20221130104310-12.png]]
1748
1749
1750 (% style="color:blue" %)**Link situation:**
1751
1752 [[image:image-20221130104310-13.png||height="458" width="486"]]
1753
1754
1755 [[image:image-20221130104310-14.png||height="371" width="823"]]
1756
1757
1758 == 6.8 Where to get the decoder for RS485-LN? ==
1759
1760 The decoder for RS485-LN needs to be written by yourself. Because the sensor to which the user is connected is custom, the read device data bytes also need custom parsing, so there is no universal decoder. We can only provide [[templates>>https://github.com/dragino/dragino-end-node-decoder/tree/main/RS485-LN]] for decoders (no intermediate data parsing part involved)
1761
1762
1763 = 7. Trouble Shooting =
1764
1765 == 7.1 Downlink doesn't work, how to solve it? ==
1766
1767
1768 Please see this link for debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome]]
1769
1770
1771 == 7.2 Why I can't join TTN V3 in US915 /AU915 bands? ==
1772
1773
1774 It might about the channels mapping. Please see for detail: [[Notice of Frequency band>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1775
1776
1777 = 8. Order Info =
1778
1779
1780 (% style="color:blue" %)**Part Number: RS485-LN-XXX**
1781
1782 (% style="color:blue" %)**XXX:**
1783
1784 * (% style="color:red" %)**EU433**(%%):  frequency bands EU433
1785 * (% style="color:red" %)**EU868**(%%):  frequency bands EU868
1786 * (% style="color:red" %)**KR920**(%%):  frequency bands KR920
1787 * (% style="color:red" %)**CN470**(%%):  frequency bands CN470
1788 * (% style="color:red" %)**AS923**(%%):  frequency bands AS923
1789 * (% style="color:red" %)**AU915**(%%):  frequency bands AU915
1790 * (% style="color:red" %)**US915**(%%):  frequency bands US915
1791 * (% style="color:red" %)**IN865**(%%):  frequency bands IN865
1792 * (% style="color:red" %)**RU864**(%%):  frequency bands RU864
1793 * (% style="color:red" %)**KZ865**(%%):  frequency bands KZ865
1794
1795 = 9.Packing Info =
1796
1797
1798 **Package Includes**:
1799
1800 * RS485-LN x 1
1801 * Stick Antenna for LoRa RF part x 1
1802 * Program cable x 1
1803
1804 **Dimension and weight**:
1805
1806 * Device Size: 13.5 x 7 x 3 cm
1807 * Device Weight: 105g
1808 * Package Size / pcs : 14.5 x 8 x 5 cm
1809 * Weight / pcs : 170g
1810
1811 = 10. FCC Caution for RS485LN-US915 =
1812
1813
1814 (((
1815 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
1816 )))
1817
1818 (((
1819 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.
1820 )))
1821
1822 (((
1823
1824 )))
1825
1826 (((
1827 (% style="color:red" %)**IMPORTANT NOTE:**
1828 )))
1829
1830 (((
1831 (% style="color:red" %)**Note: **(%%)This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
1832 )))
1833
1834 (((
1835 —Reorient or relocate the receiving antenna.
1836 )))
1837
1838 (((
1839 —Increase the separation between the equipment and receiver.
1840 )))
1841
1842 (((
1843 —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
1844 )))
1845
1846 (((
1847 —Consult the dealer or an experienced radio/TV technician for help.
1848 )))
1849
1850 (((
1851
1852 )))
1853
1854 (((
1855 (% style="color:red" %)**FCC Radiation Exposure Statement:**
1856 )))
1857
1858 (((
1859 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.
1860 )))
1861
1862
1863 = 11. Support =
1864
1865
1866 * (((
1867 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.
1868 )))
1869 * (((
1870 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]].
1871
1872
1873
1874 )))

Applications

Navigation

Copyright ©2010-2024 Dragino Technology Co., LTD. All rights reserved
Dragino Wiki v2.0