LR200DM – Digital I/O to Modbus RTU over LoRa

Modbus Protocol
2 x Digital Input
2 x Digital Output
1200~38.4K bps with Star function
Output power 20 dBm
Distance 2~5 km

Application DiagramSetupSpecificationsOrdering InformationInquiryDownload

Power off LoRa converter
Open LoRa converter housing
Remove Digital I/O board and replace with Serial board
Adjust LoRa board dip switch from operation mode to setup mode
Connect LoRa converter assembly board to PC on a RS232 crosslink cable
Power on LoRa converter assembly board
Run setup utility to configure settings (see below photo)
Click to choose accordant COM port from pull-down menu
Click “Read” to read out default settings of the LoRa converter
Those LoRa converters with same Frequency and Key will be paired/grouped together
Click “Write” to save settings to LoRa converter when done with configuration
Power off LoRa converter assembly board
Adjust LoRa board dip switch from setup mode back to operation mode
Remove Serial board and replace with Digital I/O board back
Assemble LoRa converter housing.

CPU : 32 bits MCU , 40 MHz , 16KB SRAM , 128KB Flash ROM
Modbus Protocol

LoRa : Semtech SX1272
Frequency :  ISM band 862 ~ 936MHz
Receiver Sensitivity : -137 dBm
Transmit Output Power : 20 dBm
Sleep Current : 3uA (at power down state)
TX current < 140 mA@20 dbm , RX current < 10 mA
Security processor ( 128/192/256 bits AES )
Packet engine up to 256 bytes with CRC
Antenna : SMA Type , 2 dBi , changeable
Distance : Up To 5000 Meters in free space
Data Rate : 0.244 ~ 18.2K bps (LoRa) / 300 K bps (FSK)
Application mode : Star

Digital Input x 2
3000VDC Isolation Protect ( Active High /Active Low Selectable )
Dry contact : Logic level 0 : close to GND , Logic level 1 : open
Wet contact : Logic level 0 : 0~3 V , Logic level 1 : 10 ~ 30 V

Digital Output x 2
Relay ( Active High /Active Low Selectable )
120V AC@10A , 240V AC@7A , 24V DC@10A

Setup Tool : Windows Utility
Power : DC 9 ~ 24V / 150ma @ 9V , 60ma @ 24V
Led Lamp : SYS (red) , Pairing (green) , Rx(red) , Tx(green)
Operating Temperature : -10℃〜70℃
Storage Temperature : -20℃〜85℃
l  Dimensions : 160 x 90 x 25 mm ( W x D x H )
Weight : 350 g ( not include power )

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Downloads

File Description File size
zip LoRa_SKY_Setup_Tool_x64 LoRa Setup Utility Tool 64bit
14 KB
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