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USB/RS232/RS485/TTL Converter User Guide

Overview

The Multibus Converter is an industrial-grade isolated converter that supports USB / RS232 / TTL to RS232 / 485 / TTL, with built-in power supply isolation, digital isolation, and protection circuits like TVS diode. It is easy to use and suitable for industrial control equipment or applications with high communication requirements.

Feature

  • Adopts original FT232RL for USB communication, fast communicating, stable and reliable, better compatibility.
  • Onboard over-voltage, over-current protection circuits (there's no protection between the two power supplies of the host terminal).
  • Onboard unibody power supply isolation, providing stable isolated voltage, no extra power supply required for the isolated terminal.
  • Onboard unibody digital isolation, for isolating the signal, reliable and jam-proof, low power consumption.
  • Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, lightning proof & anti-electrostatic.
  • Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, and improves shock resistance.
  • Onboard TTL serial port 3.3V and 5V voltage level switch, allows the user to select the TTL level of the Group B terminal.
  • Aluminium alloy enclosure with oxidation dull-polish surface, solid and durable.

Specification

PRODUCT TYPEIndustrial Isolated Multi-bus USB/RS232/RS485/TTL Converter
DATA RATE300 ~ 921600bps
300 ~ 600000bps (RS232 to RS232)
GROUP AUSBOperating voltage5V
ConnectorUSB-B
Protection200mA resettable fuse, isolated output
RS232ConnectorDB9 male
ProtectionTVS protection, surge-suppress, ESD protection
Transmission modepoint-to-point
TTL (UART)Operating voltage5V
ConnectorScrew terminal
PinoutTXD, RXD, GND, 5V
Protectionclamping protection diode, over-voltage protection, reverse-proof, shock-resistance, jamproof
GROUP BRS485ConnectorScrew terminal
PinoutA+, B-, GND
Direction controlHardware auto control
Protectionlightningproof, surge-suppress, ESD protection
Transmission modepoint-to-multipoints (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more)
RS232ConnectorDB9 male
ProtectionTVS protection, surge-suppress, ESD protection
Tranmission modepoint-to-point
TTL (UART)Operating voltage3.3V/5V
ConnectorScrew terminal
PinoutTXD, RXD, GND
Protectionclamping protection diode, over-voltage protection, reverse-proof, shock-resistance, jamproof
OPERATING ENVIRONMENTTemperature
Humidity5%RH ~ 95%RH
OS SUPPORTWindows 11 / 10 / 8.1 / 8 / 7 / XP
NOTEonly one pair of devices will be matched for a complete communication between the Group A and Group B terminals at the same time
Note
A pad for 120R terminal resistor is reserved for the RS485 port, users can add the resistor to the begin/terminal devices if connect multiple devices.

Install driver

Generally, after connecting to the computer, the system will automatically prompt to install the driver. If the device cannot communicate normally after connecting to the device, And if the device has a yellow exclamation mark in the device manager, you need to manually install the driver.

  • Download the Driver
  • unzip the driver and double-click the exe file to install the driver.

Pinout of RS232