USB to RS485 Converter Adapter

USB to RS485 Converter Adapter allows seamless communication between USB-enabled devices and RS485 networks. It’s commonly used for industrial control systems, PLCs, sensors, and data acquisition modules. This adapter converts the USB signal to half-duplex RS485, enabling long-distance and noise-resistant serial communication.

Key Features:

• Stable Data Transmission: Ensures reliable communication with built-in surge and static protection.
• Plug-and-Play: No external power required; powered directly via USB.
• Auto Transceiver Switching: Automatically detects and switches between send and receive modes.
• Wide Compatibility: Supports Windows, Linux, and macOS platforms.
• LED Indicators: Transmit (TXD) and Receive (RXD) LEDs for monitoring activity.

Technical Specifications:

• Input Interface: USB 2.0 (Type-A Male)
• Output Interface: RS485 (A & B terminals via screw terminal or DB9)
• Chipset: CH340, FT232, or CP2102 (depends on variant)
• Baud Rate: 300bps to 115200bps
• Transmission Distance: Up to 1200 meters (with shielded twisted pair)
• Voltage Protection: ±15KV ESD protection on RS485 lines
• Power Supply: USB powered (5V)
• Operating Temperature: -20°C to +70°C

Mechanical Specifications:

• Case Material: Plastic or aluminum shell (varies by model)
• Mounting: Desktop or inline
• Connector Type: Screw terminal or DB9 female (RS485 side)
• Cable Length: Approx. 1 meter (for USB cable variants)

Connection and Wiring:

• RS485 Interface: A (Data+) and B (Data−) terminals
• Polarity: Match RS485 bus polarity to avoid communication failure
• Wiring: Use twisted-pair cable for long distance communication

Datasheet and Documentation:

• Download USB to RS485 Adapter Datasheet (PDF)

Applications:

• Industrial Automation: Communicate with PLCs, sensors, and controllers
• Smart Metering: Read energy and water meters via Modbus RTU
• Security Systems: Interface with access control panels or CCTV over RS485
• Home Automation: Connect RS485-based lighting or HVAC modules
• Data Logging: Use with software to capture remote sensor data

Equivalent Models:

• CH340G-based Adapter: Cost-effective RS485 interface
• CP2102 RS485 Module: Silicon Labs chip with stable driver support
• FTDI FT232RL Adapter: Premium USB to RS485 converter with full OS compatibility

Package Includes:

• 1 x USB to RS485 Converter Adapter