SX1262-LoRa-DTU-xF

SX1262-LoRa-DTU-xF UART

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Primary Attribute Category: {{{userDefinedInfo}}}: {{{userdefinedvalue}}} Brand: Waveshare

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Onboard Interfaces

Related Products

Overview

• This product does not support LoRaWAN.
  
• This product only supports SX1262-LoRa-DTU-xF and USB-TO-LoRa-xF communication.
  
• At least 2x SX1262-LoRa-DTU-HF are required to form a LoRa communication network (SX1262-LoRa-DTU-LF is the same).
  

Introduction

SX1262-LoRa-DTU is a wireless data transfer unit with RS232, RS485, and RS422 interfaces based on the SX1262 module. Adopts LoRa Modulate and Demodulate technology, with the advantages of anti-interference and long-distance communication (up to 5KM). Supports point-to-point, point-to-multipoint, relay network, AES, etc. As it is compact and easy to install, SX1262-LoRa-DTU-xF is suitable for wireless data transmission and device control of industry standard or non-standard user protocol.

Feature

• Adopts LoRa Modulate and Demodulate technology, anti-interference, and long-distance communication.
• Adopts the original SX1262 chip, with -148dBm reception sensitivity and 22dBm emit power.
• Supports preamble detection, with CRC, automatic packetization, 960 bytes cache functions.
• Supports LBT sending, RSSI output, and AT command configuration.
• AES communication to ensure data transmission security.
• Supports multi-level relay networking to increase the wireless communication distance.
• Supports host configuration and firmware upgrade (support firmware customization for batch order).
• Adopts high-quality components such as TCXO to ensure stable operation under harsh working conditions.
• Comes with online development resources and manuals.

Parameters

Communication Interface
Interface	Screw terminals: RS485 × 1, RS422 × 1 DB9 male connector: RS232 × 1 SMA-KE female connector: 6dBi omni-directional antenna × 1
RS485	Anti-surge, overcurrent protection (reserved 120R balanced resistor header)
RS232	TVS diode, anti-surge, and ESD protection
RS422	Anti-surge, overcurrent protection (reserved 120R balanced resistor header)
Wireless Parameters
Frequency Band	Sub-GHz (410~510MHz, 850~930MHz)
Signal Modulation	LoRa
Encryption	AES
Emit Power	+22dBm Max
Reception Sensitivity	-148dBm
UART Parameters
Baud Rate	1200 ~ 115200bps
Parity Bit	None, Odd, Even
Data bit	8 ~ 9 bits
Flow Control	N/F
Environmental Requirements
Operating Temperature	0 ~ 85℃
Humidity Range	5% ~ 95% relative humidity
Others
Power Supply	Screw terminals 6 ~ 28V or DC 12V, overcurrent, overvoltage and reverse-proof
Case	Aluminum alloy
Dimensions	77.0 × 24.0 × 64.2mm

Hardware Description

• This product does not support LoRaWAN.
  
• This product only supports SX1262-LoRa-DTU-xF and USB-TO-LoRa-xF communication.
  
• At least 2x SX1262-LoRa-DTU-HF are required to form a LoRa communication network (SX1262-LoRa-DTU-LF is the same).
  
• When installing the SX1262-LoRa-DTU-xF (hereinafter referred to as DTU), position the SMA antenna interface upwards and the LED light facing outward. The back has a 35mm DIN latch embedded for fixing with a latch. Install the antenna, RS485, RS232, or RS422 interface cables in sequence, and finally, connect the DC12V power supply or terminal for power (only one power source needs to be connected).
• Note: it is not possible to simultaneously convert RS232, RS485, and RS422 to LoRa, and the RS232, RS485, and RS422 interfaces for the same LoRa module cannot be converted to one another.

Interface Description

RS485

• TA, and TB at the bottom of DTU are RS485 half-duplex bus interfaces. (Starting from V1.2 firmware, RS485 is the default interface. The baud rate is 9600, and the mode is 8N1.)
• Note that if the RS485 interface is blocked and the DTU receives the LoRa message, the RS485 interface has switched to output mode and does not receive data any more.

RS232

• The DB9 male plug on the top of DTU is the RS232 full-duplex bus interface.

RS422

• DTU bottom TA, TB, RA, and RB are RS422 full-duplex bus interfaces.
  

• Note: RS485 bus interface multiplexes the sending end of RS422.
  

SMA Port (Antenna)

• The SMA interface on the top of the DTU is a supporting 6dBi omnidirectional antenna interface.

Power Port

• DC12V power supply: Use the matching AC-DC power supply to connect the DTU.
• Terminal 6~28V power supply: 6-28V at the 6-pin green terminal, GND is the DC power supply port.

Indicator

• PWR: When connected to DC12V or terminal power supply, the PWR indicator is always on.
• TXD: When sending data, the TXD indicator is on, and it goes out after sending.
• RXD: When receiving data, the RXD indicator is on, and it goes out after receiving.

Key

• KEY: Note: Do not press the button within 3 seconds after powering on.
  • Press and hold the KEY within 3 seconds of powering on or before powering on. After holding the key for two seconds, release the KEY when TXD and RXD flash, indicating entry into firmware update mode (starting from firmware version 1.1).
  • After powering on for 3 seconds, the TXD and RXD indicators blink at the same time to enter the default operating status.
  • After 3 seconds of powering on, lightly touch the KEY at 1-second intervals and then release the button to switch between RS485, RS232, and RS422 COMx modes.
  • After 3 seconds of powering on, hold down the KEY button until the RXD light is off, then release the KEY button. This will restore factory parameter settings and automatically reboot.

Dimensions