Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 20.2 >
edited by Xiaoling
on 2022/05/23 09:08
To version < 15.5 >
edited by Xiaoling
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Title
... ... @@ -1,1 +1,1 @@
1 -RS485-LN – RS485 to LoRaWAN Converter
1 +RS485-BL – Waterproof RS485 to LoRaWAN Converter
Content
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1 1  (% style="text-align:center" %)
2 -[[image:1653266934636-343.png||height="385" width="385"]]
2 +[[image:1652947681187-144.png||height="385" width="385"]]
3 3  
4 4  
5 5  
6 -**RS485-LN – RS485 to LoRaWAN Converter User Manual**
7 7  
7 +**RS485-BL – Waterproof RS485 to LoRaWAN Converter User Manual**
8 8  
9 +
9 9  **Table of Contents:**
10 10  
11 11  
... ... @@ -14,44 +14,62 @@
14 14  
15 15  = 1.Introduction =
16 16  
17 -== 1.1 What is RS485-LN RS485 to LoRaWAN Converter ==
18 +== 1.1 What is RS485-BL RS485 to LoRaWAN Converter ==
18 18  
19 19  (((
21 +
22 +)))
23 +
20 20  (((
21 -The Dragino RS485-LN is a RS485 to LoRaWAN Converter. It converts the RS485 signal into LoRaWAN wireless signal which simplify the IoT installation and reduce the installation/maintaining cost.
25 +The Dragino RS485-BL is a **RS485 / UART to LoRaWAN Converter** for Internet of Things solutions. User can connect RS485 or UART sensor to RS485-BL converter, and configure RS485-BL to periodically read sensor data and upload via LoRaWAN network to IoT server.
22 22  )))
23 23  
24 24  (((
25 -RS485-LN allows user to 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.
29 +RS485-BL can interface to RS485 sensor, 3.3v/5v UART sensor or interrupt sensor. RS485-BL provides **a 3.3v output** and** a 5v output** to power external sensors. Both output voltages are controllable to minimize the total system power consumption.
26 26  )))
27 27  
28 28  (((
29 -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.
33 +RS485-BL is IP67 **waterproof** and powered by **8500mAh Li-SOCI2 battery**, it is designed for long term use for several years.
30 30  )))
31 31  
32 32  (((
33 -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.
37 +RS485-BL runs standard **LoRaWAN 1.0.3 in Class A**. It can reach long transfer range and easy to integrate with LoRaWAN compatible gateway and IoT server.
34 34  )))
39 +
40 +(((
41 +For data uplink, RS485-BL sends user-defined commands to RS485 devices and gets the return from the RS485 devices. RS485-BL will process these returns data according to user-define rules to get the final payload and upload to LoRaWAN server.
35 35  )))
36 36  
37 -[[image:1653267211009-519.png||height="419" width="724"]]
44 +(((
45 +For data downlink, RS485-BL runs in LoRaWAN Class A. When there is downlink commands from LoRaWAN server, RS485-BL will forward the commands from LoRaWAN server to RS485 devices.
46 +)))
38 38  
48 +(((
49 +Each RS485-BL pre-load with a set of unique keys for LoRaWAN registration, register these keys to LoRaWAN server and it will auto connect after power on.
50 +)))
51 +
52 +[[image:1652953304999-717.png||height="424" width="733"]]
53 +
39 39  == 1.2 Specifications ==
40 40  
41 41  **Hardware System:**
42 42  
43 43  * STM32L072CZT6 MCU
44 -* SX1276/78 Wireless Chip
59 +* SX1276/78 Wireless Chip 
45 45  * Power Consumption (exclude RS485 device):
46 -** Idle: 32mA@12v
61 +** Idle: 6uA@3.3v
47 47  
48 -*
49 -** 20dB Transmit: 65mA@12v
63 +*
64 +** 20dB Transmit: 130mA@3.3v
50 50  
51 51  **Interface for Model:**
52 52  
53 -* RS485
54 -* Power Input 7~~ 24V DC.
68 +* 1 x RS485 Interface
69 +* 1 x TTL Serial , 3.3v or 5v.
70 +* 1 x I2C Interface, 3.3v or 5v.
71 +* 1 x one wire interface
72 +* 1 x Interrupt Interface
73 +* 1 x Controllable 5V output, max
55 55  
56 56  **LoRa Spec:**
57 57  
... ... @@ -60,30 +60,27 @@
60 60  ** Band 2 (LF): 410 ~~ 528 Mhz
61 61  * 168 dB maximum link budget.
62 62  * +20 dBm - 100 mW constant RF output vs.
63 -* +14 dBm high efficiency PA.
64 64  * Programmable bit rate up to 300 kbps.
65 65  * High sensitivity: down to -148 dBm.
66 66  * Bullet-proof front end: IIP3 = -12.5 dBm.
67 67  * Excellent blocking immunity.
68 -* Low RX current of 10.3 mA, 200 nA register retention.
69 69  * Fully integrated synthesizer with a resolution of 61 Hz.
70 -* FSK, GFSK, MSK, GMSK, LoRaTM and OOK modulation.
87 +* LoRa modulation.
71 71  * Built-in bit synchronizer for clock recovery.
72 72  * Preamble detection.
73 73  * 127 dB Dynamic Range RSSI.
74 -* Automatic RF Sense and CAD with ultra-fast AFC.
75 -* Packet engine up to 256 bytes with CRC.
91 +* Automatic RF Sense and CAD with ultra-fast AFC. ​​​
76 76  
77 77  == 1.3 Features ==
78 78  
79 -* LoRaWAN Class A & Class C protocol (default Class C)
95 +* LoRaWAN Class A & Class C protocol (default Class A)
80 80  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
81 81  * AT Commands to change parameters
82 -* Remote configure parameters via LoRa Downlink
98 +* Remote configure parameters via LoRaWAN Downlink
83 83  * Firmware upgradable via program port
84 84  * Support multiply RS485 devices by flexible rules
85 85  * Support Modbus protocol
86 -* Support Interrupt uplink (Since hardware version v1.2)
102 +* Support Interrupt uplink
87 87  
88 88  == 1.4 Applications ==
89 89  
... ... @@ -96,31 +96,47 @@
96 96  
97 97  == 1.5 Firmware Change log ==
98 98  
99 -[[RS485-LN Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=RS485-LN/]]
115 +[[RS485-BL Image files – Download link and Change log>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/RS485-BL/Firmware/||style="background-color: rgb(255, 255, 255);"]]
100 100  
101 101  == 1.6 Hardware Change log ==
102 102  
103 103  (((
120 +v1.4
121 +)))
122 +
104 104  (((
105 -v1.2: Add External Interrupt Pin.
124 +~1. Change Power IC to TPS22916
125 +)))
106 106  
107 -v1.0: Release
127 +
128 +(((
129 +v1.3
108 108  )))
131 +
132 +(((
133 +~1. Change JP3 from KF350-8P to KF350-11P, Add one extra interface for I2C and one extra interface for one-wire
109 109  )))
110 110  
111 -= 2. Power ON Device =
112 112  
113 113  (((
114 -The RS485-LN can be powered by 7 ~~ 24V DC power source. Connection as below
138 +v1.2
139 +)))
115 115  
116 -* Power Source VIN to RS485-LN VIN+
117 -* Power Source GND to RS485-LN VIN-
141 +(((
142 +Release version ​​​​​
143 +)))
118 118  
119 -Once there is power, the RS485-LN will be on.
145 += 2. Pin mapping and Power ON Device =
120 120  
121 -[[image:1653268091319-405.png]]
147 +(((
148 +The RS485-BL is powered on by 8500mAh battery. To save battery life, RS485-BL is shipped with power off. User can put the jumper to power on RS485-BL.
122 122  )))
123 123  
151 +[[image:1652953055962-143.png||height="387" width="728"]]
152 +
153 +
154 +The Left TXD and RXD are TTL interface for external sensor. TTL level is controlled by 3.3/5v Jumper.
155 +
124 124  = 3. Operation Mode =
125 125  
126 126  == 3.1 How it works? ==
... ... @@ -271,101 +271,87 @@
271 271  )))
272 272  )))
273 273  
274 -=== 3.3.2 Configure sensors ===
275 275  
276 -(((
277 -Some sensors might need to configure before normal operation. User can configure such sensor via PC or through RS485-BL AT Commands (% style="color:#4f81bd" %)**AT+CFGDEV**.
278 -)))
279 279  
280 -(((
281 -When user issue an (% style="color:#4f81bd" %)**AT+CFGDEV**(%%) command, Each (% style="color:#4f81bd" %)**AT+CFGDEV**(%%) equals to send a command to the RS485 or TTL sensors. This command will only run when user input it and won’t run during each sampling.
282 -)))
283 283  
284 -(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
285 -|**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
286 -|AT+CFGDEV|(% style="width:418px" %)(((
309 +1.
310 +11.
311 +111. Configure sensors
312 +
313 +Some sensors might need to configure before normal operation. User can configure such sensor via PC or through RS485-BL AT Commands AT+CFGDEV.
314 +
315 +
316 +When user issue an AT+CFGDEV command, Each AT+CFGDEV equals to send a command to the RS485 or TTL sensors. This command will only run when user input it and won’t run during each sampling.
317 +
318 +|**AT Commands**|**Description**|**Example**
319 +|AT+CFGDEV|(((
287 287  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
288 288  
289 -AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,
322 +AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
290 290  
291 -mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
292 -)))|(% style="width:256px" %)AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
324 +m: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
325 +)))|AT+CFGDEV=xx xx xx xx xx xx xx xx xx xx xx xx,m
293 293  
294 294  Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
295 295  
296 -=== 3.3.3 Configure read commands for each sampling ===
297 297  
298 -(((
330 +
331 +
332 +
333 +1.
334 +11.
335 +111. Configure read commands for each sampling
336 +
299 299  RS485-BL is a battery powered device; it will sleep most of time. And wake up on each period and read RS485 / TTL sensor data and uplink.
300 -)))
301 301  
302 -(((
339 +
303 303  During each sampling, we need to confirm what commands we need to send to the sensors to read data. After the RS485/TTL sensors send back the value, it normally includes some bytes and we only need a few from them for a shorten payload.
304 -)))
305 305  
306 -(((
342 +
307 307  To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
308 -)))
309 309  
310 -(((
345 +
311 311  This section describes how to achieve above goals.
312 -)))
313 313  
314 -(((
348 +
315 315  During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
316 -)))
317 317  
318 -(((
351 +
319 319  **Command from RS485-BL to Sensor:**
320 -)))
321 321  
322 -(((
323 323  RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
324 -)))
325 325  
326 -(((
356 +
327 327  **Handle return from sensors to RS485-BL**:
328 -)))
329 329  
330 -(((
331 331  After RS485-BL send out a string to sensor, RS485-BL will wait for the return from RS485 or TTL sensor. And user can specify how to handle the return, by **AT+DATACUT or AT+SEARCH commands**
332 -)))
333 333  
334 -* (((
335 -**AT+DATACUT**
336 -)))
337 337  
338 -(((
362 +* **AT+DATACUT**
363 +
339 339  When the return value from sensor have fix length and we know which position the valid value we should get, we can use AT+DATACUT command.
340 -)))
341 341  
342 -* (((
343 -**AT+SEARCH**
344 -)))
345 345  
346 -(((
367 +* **AT+SEARCH**
368 +
347 347  When the return value from sensor is dynamic length and we are not sure which bytes the valid data is, instead, we know what value the valid value following. We can use AT+SEARCH to search the valid value in the return string.
348 -)))
349 349  
350 -(((
371 +
351 351  **Define wait timeout:**
352 -)))
353 353  
354 -(((
355 355  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
356 -)))
357 357  
358 -(((
376 +
359 359  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
360 -)))
361 361  
379 +
362 362  **Examples:**
363 363  
364 364  Below are examples for the how above AT Commands works.
365 365  
384 +
366 366  **AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
367 367  
368 -(% border="1" class="table-bordered" %)
369 369  |(((
370 370  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
371 371  
... ... @@ -378,9 +378,9 @@
378 378  
379 379  In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
380 380  
399 +
381 381  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
382 382  
383 -(% border="1" class="table-bordered" %)
384 384  |(((
385 385  **AT+SEARCHx=aa,xx xx xx xx xx**
386 386  
... ... @@ -398,7 +398,7 @@
398 398  
399 399  The valid data will be all bytes after 1E 56 34 , so it is 2e 30 58 5f 36 41 30 31 00 49
400 400  
401 -[[image:1652954654347-831.png]]
419 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image013.png]]
402 402  
403 403  
404 404  1. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
... ... @@ -459,7 +459,7 @@
459 459  
460 460  
461 461  1.
462 -11.
480 +11.
463 463  111. Compose the uplink payload
464 464  
465 465  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.**
... ... @@ -523,8 +523,8 @@
523 523  
524 524  
525 525  
526 -1.
527 -11.
544 +1.
545 +11.
528 528  111. Uplink on demand
529 529  
530 530  Except uplink periodically, RS485-BL is able to uplink on demand. The server sends downlink command to RS485-BL and RS485 will uplink data base on the command.
... ... @@ -537,8 +537,8 @@
537 537  
538 538  
539 539  
540 -1.
541 -11.
558 +1.
559 +11.
542 542  111. Uplink on Interrupt
543 543  
544 544  Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
... ... @@ -552,7 +552,7 @@
552 552  AT+INTMOD=3  Interrupt trigger by rising edge.
553 553  
554 554  
555 -1.
573 +1.
556 556  11. Uplink Payload
557 557  
558 558  |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
... ... @@ -614,15 +614,15 @@
614 614  
615 615  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
616 616  
617 -1.
618 -11.
635 +1.
636 +11.
619 619  111. Common Commands:
620 620  
621 621  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: [[http:~~/~~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands>>url:http://wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands]]
622 622  
623 623  
624 -1.
625 -11.
642 +1.
643 +11.
626 626  111. Sensor related commands:
627 627  
628 628  ==== Choose Device Type (RS485 or TTL) ====
... ... @@ -928,13 +928,13 @@
928 928  
929 929  
930 930  
931 -1.
949 +1.
932 932  11. Buttons
933 933  
934 934  |**Button**|**Feature**
935 935  |**RST**|Reboot RS485-BL
936 936  
937 -1.
955 +1.
938 938  11. +3V3 Output
939 939  
940 940  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
... ... @@ -952,7 +952,7 @@
952 952  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
953 953  
954 954  
955 -1.
973 +1.
956 956  11. +5V Output
957 957  
958 958  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
... ... @@ -972,13 +972,13 @@
972 972  
973 973  
974 974  
975 -1.
993 +1.
976 976  11. LEDs
977 977  
978 978  |**LEDs**|**Feature**
979 979  |**LED1**|Blink when device transmit a packet.
980 980  
981 -1.
999 +1.
982 982  11. Switch Jumper
983 983  
984 984  |**Switch Jumper**|**Feature**
... ... @@ -1024,7 +1024,7 @@
1024 1024  
1025 1025  
1026 1026  
1027 -1.
1045 +1.
1028 1028  11. Common AT Command Sequence
1029 1029  111. Multi-channel ABP mode (Use with SX1301/LG308)
1030 1030  
... ... @@ -1043,8 +1043,8 @@
1043 1043  
1044 1044  ATZ
1045 1045  
1046 -1.
1047 -11.
1064 +1.
1065 +11.
1048 1048  111. Single-channel ABP mode (Use with LG01/LG02)
1049 1049  
1050 1050  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
... ... @@ -1119,7 +1119,7 @@
1119 1119  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image035.png]] [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.png]]
1120 1120  
1121 1121  
1122 -1.
1140 +1.
1123 1123  11. How to change the LoRa Frequency Bands/Region?
1124 1124  
1125 1125  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
... ... @@ -1126,7 +1126,7 @@
1126 1126  
1127 1127  
1128 1128  
1129 -1.
1147 +1.
1130 1130  11. How many RS485-Slave can RS485-BL connects?
1131 1131  
1132 1132  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:#downlink_A8]].
... ... @@ -1143,7 +1143,7 @@
1143 1143  
1144 1144  
1145 1145  
1146 -1.
1164 +1.
1147 1147  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1148 1148  
1149 1149  It might about the channels mapping. Please see for detail.
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