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FT232 USB To RS485 TTL Serial Converter Adapter Module


  1. FT232 USB To RS485
  2. TTL Serial Converter Adapter Module
  3. USB To RS485 Converter
  4. On Board Chip is FT232RL & MAX485
  5. In Pakistan at Mekatroniks




USB To RS485 Converter Introduction

USB To RS485 Converter TTL Serial Adapter Module. The USB to RS-485 converter module introduce pairs a MAX485 RS-485 transceiver chip with an FT232RL USB UART IC to convert a USB stream to RS-485.

It supports various devices with RS-485 communication interface like a Programmable Logic Controllers (PLCs). Below are its features, copy from an online seller’s page.

  • Onboard chips: FT232RL & MAX485
  • Supports wide baud-rate of 300-9216000 bps
  • Can also be use as USB to TTL & TTL to RS485 Converter
  • Supports Windows 98, ME, 2000, XP, WIN7, Vista, Windows8, Windows10
  • No external power supply require (Power via USB Port)
  • Supports multi-point communication
  • Each converter allows up to 32 RS485 devices to be connect

As you can see, the module is a very compact and ready to use piece of electronics.

It performs the USB (Universal Serial Bus) to two wire RS485 (Two-Wire Half-Duplex) and vice versa conversion.

The module holds an FT232RL USB UART IC with MAX485 to switch between the USB and RS-485 communication standards.

USB To RS485 Converter About

Note that the FT232RL is also link to the transmit and receive enable inputs of the .

MAX485 to control the communication mode of the RS-485 transceiver.

With the proper drivers (available for Windows, Mac and Linux) install,

The FT232RL will enumerate as a virtual COM port (VCP) – See below.

Note: A COM Port will only be assign to the USB to RS-485 converter module if the correct driver for the module has been install successfully.

VCP Drivers Download Link https://ftdichip.com/drivers/vcp-drivers/

To put it simply, the FT232RL is configure in the standard way as USB to UART chip, and it drives the MAX487. RS-485 transceiver chip while the direction is control by the TXDEN pin.

The USB port is a standard USB-B female connector and the RS-485 connections are made by a 3-way screw terminal connector.

The Power status and Tx/Rx states are indicate by three onboard LEDs.

The 4 jumper caps (5V/RX/TX/GND) simply link the USB interface to the RS-485 interface.

If the jumper caps are removed, the FT232RL circuitry may be use as a standalone USB-TTL interface, and/or the MAX485 circuitry as a TTL-RS485 interface.


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