USB TO RS485 User Guide

Introduction

This is an industrial USB to RS485 converter with original FT232RL inside. It features embedded protection circuits such as lightning-proof, resettable fuse, ESD protection, and TVS diode, etc. It's pretty small in size.

Features

USB to RS485 communication
Adopt original FT232RL, fast communicating, stable and reliable, better compatibility
Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightning-proof & anti-electrostatic
Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance
3 LEDs for indicating the power and transceiver status

Specification

Product type: industrial converter
Baudrate: 300-921600bps
Host port: USB
Device port: RS485
USB:
- Operating voltage: 5V
- Connector: USB-A
- Protection: 200mA self-recovery fuse, ESD protection
- Transmission distance: about 5m
RS485:
- Connector: screw terminal
- Pins: A+, B-, GND
- Direction control: hardware automatic control
- Protection: 600W lightning-proof and surge-suppress, 15KV ESD protection (onboard 120R balancing resistor)
- Transmission distance: about 1200m (low rate)
- Transmission mode: point-to-multipoints (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more)
LED indicators:
- PWR: red power indicator, light up when there is USB connection and voltage is detected
- TXD: red TX indicator, light up when the USB port sends data
- RXD: red RX indicator, light up when the device ports send data back
Operating environment:
- Temperature: -15℃ ~ 70℃
- Humidity: 5%RH ~ 95%RH
Operating system: Mac, Linux, Android, WinCE, Windows 10 / 8.1 / 8 / 7 / XP

User guide

Driver installation

Connect the module to host PC, check Device Manager, if the device is listed with the yellow exclamation mark, it means that the driver was not installed.

Download the driver form #Resources, unzip, and install it.
After installing, you can find that the mark disappeared and a COM device is listed

Testing

RS485

You should prepare two RS485 device
Connect A+ to A+, B- to B-, and connect them to host PC.

Run SSCOM software to test.

Expected result

VCP driver (or click here to download):

To：

Dear Customers, There may be a lag of several hours before we could process your order, depending on the time difference between your location and ours. Sincerely hoping your understanding!