I present the Dragino RS485-LN is an RS485 to LoRaWAN converter, a few months ago I ordered a couple of modules for testing.
This converter would allow monitoring and controlling devices over long distances, adding the versatility of the RS485.
Characteristics
- LoRaWAN Class A and Class C protocol (default Class C)
- Frequency bands: CN470 / EU433 / KR920 / US915 / EU868 / AS923 / AU915 / IN865 / RU864
- AT commands to change parameters
- Remote configuration parameters through LoRa Downlink
- Firmware upgradeable through the program port
- Supports multiply RS485 devices by flexible rules
- Supports modbus protocol devices
- Periodically uplink or surveys
- Downlink to send RS485 commands
Specs
- STM32L072CZT6 MCU
- SX1276 wireless chip
- Power consumption (exclude RS485 device):
- Idle: 32 mA at 12 v
- 20dB transmission: 65mA @ 12v
Model interface:
- RS485
- Power input 7 ~ 24V DC.
Architecture
Where to buy
Note: Before buying, investigate the frequency and bands allowed for LoRaWAN in your country, in my case America (US915):
CN470/EU433/KR920/US915
EU868/AS923/AU915/IN865/RU864
Other Recommended LoRaWAN
Content
- 1 x RS485-LN
- 2 x DIN brackets
- 1 x LoRa antenna
- 1 x program cable
Complete video:
Conclusion
The device is configured through AT commands, this configuration allows filtering the RS485 frame, according to the required application, allows Uplink and Donwlink
In the next few weeks I will start tests with some RS485 equipment.
I am currently reviewing the documentation on the configuration for reading modbus RTU frames over RS485.
Special thanks to SangKil Lee for his donation and contact with Dragino.
