Last modified by Karry Zhuang on 2025/03/06 16:34
<
From version < 22.6 >
edited by Xiaoling
on 2022/05/23 09:17
To version < 20.2 >
edited by Xiaoling
on 2022/05/23 09:08
>
Change comment: There is no comment for this version

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... ... @@ -41,17 +41,17 @@
41 41  **Hardware System:**
42 42  
43 43  * STM32L072CZT6 MCU
44 -* SX1276/78 Wireless Chip 
44 +* SX1276/78 Wireless Chip
45 45  * Power Consumption (exclude RS485 device):
46 46  ** Idle: 32mA@12v
47 47  
48 -*
48 +*
49 49  ** 20dB Transmit: 65mA@12v
50 50  
51 51  **Interface for Model:**
52 52  
53 53  * RS485
54 -* Power Input 7~~ 24V DC. 
54 +* Power Input 7~~ 24V DC.
55 55  
56 56  **LoRa Spec:**
57 57  
... ... @@ -116,9 +116,7 @@
116 116  * Power Source VIN to RS485-LN VIN+
117 117  * Power Source GND to RS485-LN VIN-
118 118  
119 -(((
120 120  Once there is power, the RS485-LN will be on.
121 -)))
122 122  
123 123  [[image:1653268091319-405.png]]
124 124  )))
... ... @@ -128,7 +128,7 @@
128 128  == 3.1 How it works? ==
129 129  
130 130  (((
131 -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.
129 +The RS485-BL is configured as LoRaWAN OTAA Class A 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-BL. It will auto join the network via OTAA.
132 132  )))
133 133  
134 134  == 3.2 Example to join LoRaWAN network ==
... ... @@ -135,32 +135,27 @@
135 135  
136 136  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. 
137 137  
138 -[[image:1653268155545-638.png||height="334" width="724"]]
136 +[[image:1652953414711-647.png||height="337" width="723"]]
139 139  
140 140  (((
141 -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:
139 +The RS485-BL in this example connected to two RS485 devices for demonstration, user can connect to other RS485 devices via the same method.
140 +)))
142 142  
143 -485A+ and 485B- of the sensor are connected to RS485A and RA485B of RS485-LN respectively.
144 -
145 -[[image:1653268227651-549.png||height="592" width="720"]]
146 -
147 147  (((
148 -The LG308 is already set to connect to [[TTN V3 network >>path:eu1.cloud.thethings.network/]]. So what we need to now is only configure the TTN V3:
143 +The LG308 is already set to connect to [[TTN V3 network >>url:https://www.thethingsnetwork.org/]]. So what we need to now is only configure the TTN V3:
149 149  )))
150 150  
151 151  (((
152 -**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-LN.
147 +**Step 1**: Create a device in TTN V3 with the OTAA keys from RS485-BL.
153 153  )))
154 154  
155 155  (((
156 -Each RS485-LN is shipped with a sticker with unique device EUI:
151 +Each RS485-BL is shipped with a sticker with unique device EUI:
157 157  )))
158 -)))
159 159  
160 160  [[image:1652953462722-299.png]]
161 161  
162 162  (((
163 -(((
164 164  User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
165 165  )))
166 166  
... ... @@ -167,11 +167,13 @@
167 167  (((
168 168  Add APP EUI in the application.
169 169  )))
170 -)))
171 171  
164 +
165 +
166 +
172 172  [[image:image-20220519174512-1.png]]
173 173  
174 -[[image:image-20220519174512-2.png||height="323" width="720"]]
169 +[[image:image-20220519174512-2.png||height="328" width="731"]]
175 175  
176 176  [[image:image-20220519174512-3.png||height="556" width="724"]]
177 177  
... ... @@ -187,7 +187,7 @@
187 187  
188 188  
189 189  (((
190 -**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.
185 +**Step 2**: Power on RS485-BL 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.
191 191  )))
192 192  
193 193  [[image:1652953568895-172.png||height="232" width="724"]]
... ... @@ -195,19 +195,23 @@
195 195  == 3.3 Configure Commands to read data ==
196 196  
197 197  (((
198 -(((
199 -There are plenty of RS485 devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-LN supports flexible command set. User can use [[AT Commands>>path:#AT_COMMAND]] or LoRaWAN Downlink Command to configure what commands RS485-LN should send for each sampling and how to handle the return from RS485 devices.
193 +There are plenty of RS485 and TTL level devices in the market and each device has different command to read the valid data. To support these devices in flexible, RS485-BL supports flexible command set. User can use [[AT Commands or LoRaWAN Downlink>>path:#AT_COMMAND]] Command to configure how RS485-BL should read the sensor and how to handle the return from RS485 or TTL sensors.
200 200  )))
201 201  
202 -(((
203 -(% 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
204 -)))
205 -)))
206 -
207 207  === 3.3.1 onfigure UART settings for RS485 or TTL communication ===
208 208  
209 -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:
198 +RS485-BL can connect to either RS485 sensors or TTL sensor. User need to specify what type of sensor need to connect.
210 210  
200 +**~1. RS485-MODBUS mode:**
201 +
202 +AT+MOD=1 ~/~/ Support RS485-MODBUS type sensors. User can connect multiply RS485 , Modbus sensors to the A / B pins.
203 +
204 +**2. TTL mode:**
205 +
206 +AT+MOD=2 ~/~/ Support TTL Level sensors, User can connect one TTL Sensor to the TXD/RXD/GND pins.
207 +
208 +RS485-BL default UART settings is **9600, no parity, stop bit 1**. If the sensor has a different settings, user can change the RS485-BL setting to match.
209 +
211 211  (% border="1" style="background-color:#ffffcc; color:green; width:795px" %)
212 212  |(((
213 213  **AT Commands**
... ... @@ -232,7 +232,13 @@
232 232  |(((
233 233  AT+PARITY
234 234  )))|(% style="width:285px" %)(((
234 +(((
235 235  Set UART parity (for RS485 connection)
236 +)))
237 +
238 +(((
239 +Default Value is: no parity.
240 +)))
236 236  )))|(% style="width:347px" %)(((
237 237  (((
238 238  AT+PARITY=0
... ... @@ -250,7 +250,7 @@
250 250  )))
251 251  
252 252  (((
253 -
258 +Default Value is: 1bit.
254 254  )))
255 255  )))|(% style="width:347px" %)(((
256 256  (((
... ... @@ -454,7 +454,7 @@
454 454  
455 455  
456 456  1.
457 -11.
462 +11.
458 458  111. Compose the uplink payload
459 459  
460 460  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.**
... ... @@ -518,8 +518,8 @@
518 518  
519 519  
520 520  
521 -1.
522 -11.
526 +1.
527 +11.
523 523  111. Uplink on demand
524 524  
525 525  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.
... ... @@ -532,8 +532,8 @@
532 532  
533 533  
534 534  
535 -1.
536 -11.
540 +1.
541 +11.
537 537  111. Uplink on Interrupt
538 538  
539 539  Put the interrupt sensor between 3.3v_out and GPIO ext.[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.png]]
... ... @@ -547,7 +547,7 @@
547 547  AT+INTMOD=3  Interrupt trigger by rising edge.
548 548  
549 549  
550 -1.
555 +1.
551 551  11. Uplink Payload
552 552  
553 553  |**Size(bytes)**|**2**|**1**|**Length depends on the return from the commands**
... ... @@ -609,15 +609,15 @@
609 609  
610 610  * **Sensor Related Commands**: These commands are special designed for RS485-BL.  User can see these commands below:
611 611  
612 -1.
613 -11.
617 +1.
618 +11.
614 614  111. Common Commands:
615 615  
616 616  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]]
617 617  
618 618  
619 -1.
620 -11.
624 +1.
625 +11.
621 621  111. Sensor related commands:
622 622  
623 623  ==== Choose Device Type (RS485 or TTL) ====
... ... @@ -923,13 +923,13 @@
923 923  
924 924  
925 925  
926 -1.
931 +1.
927 927  11. Buttons
928 928  
929 929  |**Button**|**Feature**
930 930  |**RST**|Reboot RS485-BL
931 931  
932 -1.
937 +1.
933 933  11. +3V3 Output
934 934  
935 935  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
... ... @@ -947,7 +947,7 @@
947 947  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
948 948  
949 949  
950 -1.
955 +1.
951 951  11. +5V Output
952 952  
953 953  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
... ... @@ -967,13 +967,13 @@
967 967  
968 968  
969 969  
970 -1.
975 +1.
971 971  11. LEDs
972 972  
973 973  |**LEDs**|**Feature**
974 974  |**LED1**|Blink when device transmit a packet.
975 975  
976 -1.
981 +1.
977 977  11. Switch Jumper
978 978  
979 979  |**Switch Jumper**|**Feature**
... ... @@ -1019,7 +1019,7 @@
1019 1019  
1020 1020  
1021 1021  
1022 -1.
1027 +1.
1023 1023  11. Common AT Command Sequence
1024 1024  111. Multi-channel ABP mode (Use with SX1301/LG308)
1025 1025  
... ... @@ -1038,8 +1038,8 @@
1038 1038  
1039 1039  ATZ
1040 1040  
1041 -1.
1042 -11.
1046 +1.
1047 +11.
1043 1043  111. Single-channel ABP mode (Use with LG01/LG02)
1044 1044  
1045 1045  AT+FDR   Reset Parameters to Factory Default, Keys Reserve
... ... @@ -1114,7 +1114,7 @@
1114 1114  [[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]]
1115 1115  
1116 1116  
1117 -1.
1122 +1.
1118 1118  11. How to change the LoRa Frequency Bands/Region?
1119 1119  
1120 1120  User can follow the introduction for [[how to upgrade image>>path:#upgrade_image]]. When download the images, choose the required image file for download.
... ... @@ -1121,7 +1121,7 @@
1121 1121  
1122 1122  
1123 1123  
1124 -1.
1129 +1.
1125 1125  11. How many RS485-Slave can RS485-BL connects?
1126 1126  
1127 1127  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]].
... ... @@ -1138,7 +1138,7 @@
1138 1138  
1139 1139  
1140 1140  
1141 -1.
1146 +1.
1142 1142  11. Why I can’t join TTN V3 in US915 /AU915 bands?
1143 1143  
1144 1144  It might about the channels mapping. Please see for detail.
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