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Title
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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  
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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  
... ... @@ -287,101 +287,87 @@
287 287  )))
288 288  )))
289 289  
290 -=== 3.3.2 Configure sensors ===
291 291  
292 -(((
293 -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**.
294 -)))
295 295  
296 -(((
297 -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.
298 -)))
299 299  
300 -(% border="1" style="background-color:#ffffcc; color:green; width:806px" %)
301 -|**AT Commands**|(% style="width:418px" %)**Description**|(% style="width:256px" %)**Example**
302 -|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|(((
303 303  This command is used to configure the RS485/TTL devices; they won’t be used during sampling.
304 304  
305 -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
306 306  
307 -mm: 0: no CRC, 1: add CRC-16/MODBUS in the end of this command
308 -)))|(% 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
309 309  
310 310  Detail of AT+CFGDEV command see [[AT+CFGDEV detail>>path:#AT_CFGDEV]].
311 311  
312 -=== 3.3.3 Configure read commands for each sampling ===
313 313  
314 -(((
330 +
331 +
332 +
333 +1.
334 +11.
335 +111. Configure read commands for each sampling
336 +
315 315  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.
316 -)))
317 317  
318 -(((
339 +
319 319  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.
320 -)))
321 321  
322 -(((
342 +
323 323  To save the LoRaWAN network bandwidth, we might need to read data from different sensors and combine their valid value into a short payload.
324 -)))
325 325  
326 -(((
345 +
327 327  This section describes how to achieve above goals.
328 -)))
329 329  
330 -(((
348 +
331 331  During each sampling, the RS485-BL can support 15 commands to read sensors. And combine the return to one or several uplink payloads.
332 -)))
333 333  
334 -(((
351 +
335 335  **Command from RS485-BL to Sensor:**
336 -)))
337 337  
338 -(((
339 339  RS485-BL can send out pre-set max 15 strings via **AT+COMMAD1**, **ATCOMMAND2**,…, to **AT+COMMANDF** . All commands are of same grammar.
340 -)))
341 341  
342 -(((
356 +
343 343  **Handle return from sensors to RS485-BL**:
344 -)))
345 345  
346 -(((
347 347  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**
348 -)))
349 349  
350 -* (((
351 -**AT+DATACUT**
352 -)))
353 353  
354 -(((
362 +* **AT+DATACUT**
363 +
355 355  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.
356 -)))
357 357  
358 -* (((
359 -**AT+SEARCH**
360 -)))
361 361  
362 -(((
367 +* **AT+SEARCH**
368 +
363 363  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.
364 -)))
365 365  
366 -(((
371 +
367 367  **Define wait timeout:**
368 -)))
369 369  
370 -(((
371 371  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
372 -)))
373 373  
374 -(((
376 +
375 375  After we got the valid value from each RS485 commands, we need to combine them together with the command **AT+DATAUP**.
376 -)))
377 377  
379 +
378 378  **Examples:**
379 379  
380 380  Below are examples for the how above AT Commands works.
381 381  
384 +
382 382  **AT+COMMANDx : **This command will be sent to RS485/TTL devices during each sampling, Max command length is 14 bytes. The grammar is:
383 383  
384 -(% border="1" class="table-bordered" %)
385 385  |(((
386 386  **AT+COMMANDx=xx xx xx xx xx xx xx xx xx xx xx xx,m**
387 387  
... ... @@ -394,9 +394,9 @@
394 394  
395 395  In the RS485-BL, we should use this command AT+COMMAND1=01 03 0B B8 00 02,1 for the same.
396 396  
399 +
397 397  **AT+SEARCHx**: This command defines how to handle the return from AT+COMMANDx.
398 398  
399 -(% border="1" class="table-bordered" %)
400 400  |(((
401 401  **AT+SEARCHx=aa,xx xx xx xx xx**
402 402  
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414 414  
415 415  The valid data will be all bytes after 1E 56 34 , so it is 2e 30 58 5f 36 41 30 31 00 49
416 416  
417 -[[image:1652954654347-831.png]]
419 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image013.png]]
418 418  
419 419  
420 420  1. For a return string from AT+COMMAND1:  16 0c 1e 56 34 2e 30 58 5f 36 41 30 31 00 49
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475 475  
476 476  
477 477  1.
478 -11.
480 +11.
479 479  111. Compose the uplink payload
480 480  
481 481  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.**
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539 539  
540 540  
541 541  
542 -1.
543 -11.
544 +1.
545 +11.
544 544  111. Uplink on demand
545 545  
546 546  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.
... ... @@ -553,8 +553,8 @@
553 553  
554 554  
555 555  
556 -1.
557 -11.
558 +1.
559 +11.
558 558  111. Uplink on Interrupt
559 559  
560 560  Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
... ... @@ -568,7 +568,7 @@
568 568  AT+INTMOD=3  Interrupt trigger by rising edge.
569 569  
570 570  
571 -1.
573 +1.
572 572  11. Uplink Payload
573 573  
574 574  |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
... ... @@ -630,15 +630,15 @@
630 630  
631 631  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
632 632  
633 -1.
634 -11.
635 +1.
636 +11.
635 635  111. Common Commands:
636 636  
637 637  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]]
638 638  
639 639  
640 -1.
641 -11.
642 +1.
643 +11.
642 642  111. Sensor related commands:
643 643  
644 644  ==== Choose Device Type (RS485 or TTL) ====
... ... @@ -944,13 +944,13 @@
944 944  
945 945  
946 946  
947 -1.
949 +1.
948 948  11. Buttons
949 949  
950 950  |**Button**|**Feature**
951 951  |**RST**|Reboot RS485-BL
952 952  
953 -1.
955 +1.
954 954  11. +3V3 Output
955 955  
956 956  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
... ... @@ -968,7 +968,7 @@
968 968  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
969 969  
970 970  
971 -1.
973 +1.
972 972  11. +5V Output
973 973  
974 974  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
... ... @@ -988,13 +988,13 @@
988 988  
989 989  
990 990  
991 -1.
993 +1.
992 992  11. LEDs
993 993  
994 994  |**LEDs**|**Feature**
995 995  |**LED1**|Blink when device transmit a packet.
996 996  
997 -1.
999 +1.
998 998  11. Switch Jumper
999 999  
1000 1000  |**Switch Jumper**|**Feature**
... ... @@ -1040,7 +1040,7 @@
1040 1040  
1041 1041  
1042 1042  
1043 -1.
1045 +1.
1044 1044  11. Common AT Command Sequence
1045 1045  111. Multi-channel ABP mode (Use with SX1301/LG308)
1046 1046  
... ... @@ -1059,8 +1059,8 @@
1059 1059  
1060 1060  ATZ
1061 1061  
1062 -1.
1063 -11.
1064 +1.
1065 +11.
1064 1064  111. Single-channel ABP mode (Use with LG01/LG02)
1065 1065  
1066 1066  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
... ... @@ -1135,7 +1135,7 @@
1135 1135  [[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]]
1136 1136  
1137 1137  
1138 -1.
1140 +1.
1139 1139  11. How to change the LoRa Frequency Bands/Region?
1140 1140  
1141 1141  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
... ... @@ -1142,7 +1142,7 @@
1142 1142  
1143 1143  
1144 1144  
1145 -1.
1147 +1.
1146 1146  11. How many RS485-Slave can RS485-BL connects?
1147 1147  
1148 1148  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]].
... ... @@ -1159,7 +1159,7 @@
1159 1159  
1160 1160  
1161 1161  
1162 -1.
1164 +1.
1163 1163  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1164 1164  
1165 1165  It might about the channels mapping. Please see for detail.
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