Description
Product Overview
The USB to RS485 Converter Adapter is a compact, high-performance communication tool designed to bridge modern computers with legacy RS485 industrial networks. Based on high-reliability chipsets (such as the CH340G or FTDI), this converter allows you to connect RS485 devices—such as industrial PLCs, Modbus meters, access control systems, and LED display controllers—directly to your computer’s USB port . It eliminates the need for bulky serial ports and complex power supplies by being bus-powered, drawing all necessary power directly from the USB connection .
RS485 is the backbone of industrial automation, allowing long-distance communication (up to 1200 meters) and multi-drop networks with up to 32 devices on a single bus. This adapter uses differential signaling (A and B lines) to provide superior noise immunity, ensuring reliable data transfer in electrically noisy environments like factories and machine rooms . Whether you are an embedded engineer, a building automation technician, or a hobbyist working with energy meters, this adapter is an essential tool for configuring, monitoring, and controlling remote RS485 devices.
Key Features
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Chipset Options: Available with CH340G (cost-effective, good compatibility) or FTDI FT232 (industrial-grade, superior driver stability) variants .
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Long-Distance Transmission: Supports communication distances up to 1200 meters (4000 feet) at lower baud rates, ideal for factory and field wiring .
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Plug-and-Play & Bus-Powered: Powered directly from the USB port; no external power supply required .
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Low Cable Loss & High Security: Using pure copper tinned core and PVC insulation materials to reduce transmission signal attenuation .
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Wide Baud Rate Support: Supports standard communication speeds to meet the needs of most industrial devices (typically up to 115200 bps, with chip capability up to 1.5Mbps) .
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Universal Compatibility: Fully compatible with Windows operating systems including Windows XP, 7, 8, 10, and 11. Also supports Linux and macOS using appropriate drivers .
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Industrial Construction: Features a rugged shell and often includes TVS protection to guard against ESD and voltage surges.
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Multi-Device Support: Connect multiple converters simultaneously via a USB hub to manage different RS485 networks .
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Chipset | CH340G / FTDI FT232RL (Model Dependent) |
| Host Interface | USB 2.0 (Type-A or Type-C depending on model) |
| Device Protocol | RS485 (2-Wire, Half-Duplex) |
| Baud Rate Range | 300 bps – 1.5 Mbps (Typical: 9600, 19200, 115200) |
| Maximum Cable Length | 1200 meters (approx. 4000 feet) |
| Maximum Nodes | Up to 32 devices per segment |
| Power Supply | 5V DC (Bus-powered via USB) |
| Isolation/Protection | Self-recovery Fuse, TVS Diodes (Surge Protection) |
| Operating Temperature | -20°C to +70°C (Industrial Grade) |
| Compatible OS | Windows (XP, Vista, 7, 8, 10, 11), Linux, macOS, WinCE |
| RS485 Connector | Screw Terminals (A, B, GND) |
| Cable Length (Device) | Approx. 1.0m – 1.2m (depending on model) |
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