Industrial USB to RS485 Converter Module (FT232RL Chip)
Rock-Solid Industrial Serial Communication for PLCs, Modbus & Automation
Bridge your computer or single-board computer directly to RS485 industrial networks with our Industrial USB to RS485 Converter Module. Powered by the industry-standard FTDI FT232RL chip, this adapter delivers ultra-low-latency, noise-immune serial communication across long distances—making it the professional choice for mission-critical installations where budget CH340 or PL2303 converters fall short.
Featuring automatic transceiver direction control (Auto-TX/RX) and native driver support across major operating systems, this module allows seamless polling of Modbus RTU sensors, industrial PLCs, electricity meters, solar inverters, and motor controllers.
Why Choose the FT232RL Version?
Genuine FTDI Reliability: Flawless, plug-and-play driver support on Windows, macOS, Linux, and Android without driver crashes, error codes, or COM port scrambling.
Unique Fixed COM Port Assignment: Each FT232RL chip features a factory-programmed internal serial number, ensuring your system remembers and locks the assigned COM port even after rebooting or changing USB ports.
Automatic Data Direction (Auto-TX/RX): Zero-delay hardware flow control automatically toggles transmit and receive modes on the RS485 bus—no manual flow control programming required.
Long-Distance Line Driving: Drives stable differential signals across twisted-pair lines up to 1,200 meters (4,000 feet), supporting daisy-chained bus topologies with up to 32 nodes.
Common Applications
Industrial Modbus RTU Networks: Poll temperature, humidity, energy meters, and environmental sensors over RS485 buses.
PLC & HMI Programming: Interface directly with industrial Programmable Logic Controllers, VFDs (Variable Frequency Drives), and CNC controllers.
Building Automation & Solar: Monitor solar charge controllers, HVAC controllers, and smart energy meters from a central PC or Raspberry Pi.
Technical Specifications
| Parameter | Specification |
| USB Interface | USB 2.0 Full Speed (Type-A Male / Micro-USB depending on housing) |
| Serial Transceiver IC | Genuine FTDI FT232RL |
| Bus Protocol | RS485 2-Wire Differential Signal ($A/+$, $B/-$) |
| Baud Rate Range | $300\text{ bps}$ to $3.0\text{ Mbps}$ |
| Max Transmission Distance | Up to $1,200\text{ meters}$ ($4,000\text{ feet}$) at lower baud rates |
| Bus Capacity | Supports up to 32 transceivers on a single RS485 bus line |
| Operating System Support | Native in Windows 11/10/8/7, macOS, Linux Kernel 2.6+, Raspberry Pi OS |