USB TO 4CH Serial Converter

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USB TO 4CH Serial Converter
USB TO 4CH Serial Converter.png

FT4232HL RS232 RS485 RS422 TTL
RS232 RS422 RS485
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Overview

Introduction

The USB TO 4CH Serial Converter is an industrial-grade USB to RS232/485/422 isolated converter and USB to TTL/RS485 converter. It features an original FT4232HL chip, built-in power isolation, ADI magnetic coupling isolation, TVS protection circuits, and an aluminum alloy case design. The USB TO 4CH Serial Converter is user-friendly with zero-delay automatic receive and transmit conversion. It is known for its fast, stable, reliable, and secure communication capabilities, making it suitable for various industrial control devices or applications with high communication requirements.

Feature

  • Adopts original FT4232HL chip, fast communicating, stable and reliable, better compatibility.
  • Supports USB to a 4-ch multi-functional serial port, convenient for expanding or debugging various industrial serial port devices.
  • Supports USB to 1-ch TTL + 1-ch TTL/RS485 + 1-ch isolated RS485/422 + 1-ch isolated RS232/485.
  • Onboard unibody power supply isolation, provides stable isolated voltage and needs no extra power supply for the isolated terminal.
  • Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, and low power consumption.
  • Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, lightningproof & ESD protection.
  • Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provide over-current/over-voltage proof, and improve shockproof performance.
  • Fully automatic transceiver circuit with no delay, ensures fast and stable communication between the USB port and different interfaces, without interfering with each other.
  • Onboard TTL serial 3.3V/5V voltage translator, config the TTL level via a switch.
  • 9 LEDs for indicating the power and transceiver status.
  • High-quality USB-B connectors, smoothly plug/pull.
  • Industrial grade metal case, supports wall-mount installation, solid and beautiful, easy to install.

Parameters

Product Type Industrial USB to 4-channel multi-functional serial converter
USB Operating voltage 5V
Connector USB-B
Protection 200mA self-recovery fuse, isolated output
PORT A

(TTL only)

TTL(UART) Operating voltage 3.3V / 5V
Connector Screw terminal
Protection Clamp protection diode, over-voltage/negative-voltage proof, shockproof
Transmission mode Point-to-point
Baud Rate 300 bps ~ 12Mbps
PORT B

(TTL/RS485)

TTL(UART) Operating voltage 3.3V / 5V
Connector Screw terminal
Protection Clamp protection diode, over-voltage/negative-voltage proof, shockproof
Transmission Mode Point-to-Point
Baud Rate 300 bps ~ 12Mbps
RS485
Connector Screw Terminal
Direction Control Hardware automatic control
Protection TVS diode, surge protection & ESD protection
Matching Resistor NC by default, reserve 120R resistors that can be enabled by jumper caps
Transmission Mode Point-to-Point (485 mode: up to 32 nodes, it is recommended to use repeaters for 16 nodes or more)
Baud Rate 300 bps ~ 921600bps
PORT C

(RS485/422)

Isolated

RS485/422

Connector Screw Terminal
Protection TVS diode, surge protection & ESD protection, power and signal isolation
Matching Resistor NC by default, reserve 120R resistors that can be enabled by jumper caps.
Transmission Mode Point-to-point (485 mode: up to 32 nodes, it is recommended to use repeaters for 16 nodes or more; 422 mode: up to 256 nodes, it is recommended to use repeaters for 16 nodes or more.)
Baud Rate 300 bps ~ 921600bps
PORT D

(RS232/485)

Isolated

RS232

Connector Screw Terminal
Protection TVS diode, surge protection & ESD protection, power & signal isolation
Transmission Mode Point-to-Point
Baud Rate 300 bps ~ 921600bps
Isolated
RS485
Connector Screw Terminal
Direction Control Hardware automatic control
Protection TVS diode, surge protection & ESD protection, power & signal isolation
Matching Resistor NC by default, reserve 120R resistors that can be enabled by jumper caps.
Transmission Mode Point-to-Point (485 mode: up to 32 nodes, it is recommended to use repeaters for 16 nodes or more)
Baudrate 300 bps ~ 921600bps
Indicator PWR Red power indicator, light up when there is a USB connection and voltage is detected.
TXD Green TX indicator, lights up when the USB port sends data.
RXD Blue RX indicator, light up when the device ports send data back.
Environment Requirements Temperature Range -15 ~ 70℃
Operating System Mac, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7

Interface Introduction

USB TO 4CH Serial Converter 05.jpg
USB TO 4CH Serial Converter 06.jpg

Dimensions

USB TO 4CH Serial Converter-02.png

Driver Installation

USB TO 4CH Serial Converter -02.png

  • Double-click CDM212364_Setup.exe to install by steps.

USB TO 4CH Serial Converter -03.png

  • Accept the agreement and keep clicking on "Next".

USB TO 4CH Serial Converter -04.png

  • Connect the computer and device, and you can find the new 4 COM ports in the Device Manager (If there is only one COM port after a while and cannot show more COM ports after trying, you can operate it according to FAQ).

USB TO 4CH Serial Converter-05.png

SSCOM Usage

Preparation

  • Open SSCOM.
  • Select the corresponding COM port based on the desired functionality. In most cases, the identified four COM port numbers are recognized from small to big, and labeled as Port A through Port D.
USB TO 4CH Serial Converter - PORT Communication Mode
Port A TTL
Port B RS485
TTL
Port C RS485
RS422
Port D RS485
RS232
  • You can check which Port corresponds to the COM port using Device Manager.
  • Check which Port corresponds to COM8.

USB TO 4CH Serial Converter Environment 1.png

  • You can find that the COM8 corresponds to Port D.

USB TO 4CH Serial Converter Environment 2.png

TTL (UART) Communication

The following introduces how to use the TTL of Port A to communicate with the TTL of Port B.

Hardware Connection

USB TO 4CH Serial Converter - PORT A USB TO 4CH Serial Converter - PORT B
Port A - GND Port B - GND
Port A - TX Port B - RX
Port A - RX Port B - TX

Software Operation

  • Enable two SSCOMs:

USB TO 4CH Serial Converter 07.png

  • Respectively select the corresponding COM ports for Port A and Port B.

USB TO 4CH Serial Converter 09.png

  • Input the characters to be transmitted, check Show Time and Packet, and then click on OpenCOM.

USB TO 4CH Serial Converter 10.png

  • Both SSCOMs are set to transmit at 100ms intervals, and you can observe the phenomenon of mutual sending and receiving.

USB TO 4CH Serial Converter 11.png

RS485 Communication

The following demonstration involves using the RS485 of Port B to communicate with the RS485 of Port C.

Hardware Connection

USB TO 4CH Serial Converter - PORT B USB TO 4CH Serial Converter - PORT C
Port B - GND Port C - GND
Port B - A+ Port C - A+
Port B - B- Port C - B-

Software Operation

  • Enable two SSCOMs.
  • Respectively select the corresponding COM ports for Port A and Port B.

USB TO 4CH Serial Converter 15.png

  • Select the baud rate as 115200, enter the characters you want to send and check Show Time and Packet for a more intuitive view. Now, click on OpenCOM.

USB TO 4CH Serial Converter 16.png

  • Select one SSCOM to transmit at 100ms intervals, and you can observe the phenomenon of mutual sending and receiving.

USB TO 4CH Serial Converter 17.png

RS422 Communication

The following introduces the self-transmission on RS422 of Port C.

Hardware Connection

USB TO 4CH Serial Converter - PORT C USB TO 4CH Serial Converter - PORT C
Port C - RA Port C - TA
Port C - RB Port C - TB

Software Operation

  • Enable a SSCOM.
  • Select the corresponding COM port to the Port C.

USB TO 4CH Serial Converter 20.png

  • Select the baud rate as 115200, input the characters to be sent, check "Show Time and Packet", and click on "OpenCOM".

USB TO 4CH Serial Converter 21.png

  • Set the SSCOM to transmit at 100ms intervals, and you can observe the phenomenon of self-transmission.

USB TO 4CH Serial Converter 22.png

RS232 Communication

The following introduces the self-transmission of the RS232 of Port D.

Hardware Connection

USB TO 4CH Serial Converter - PORT D USB TO 4CH Serial Converter - PORT D
Port D - RX Port D - TX

Software Operation

  • Enable a SSCOM.
  • Respectively select the corresponding COM port for Port D.

USB TO 4CH Serial Converter 25.png

  • Select the baudrate as 115200, input the characters to be sent, check "Show Time and Packet" for clear displaying, and then click on "OpenCOM".

USB TO 4CH Serial Converter 26.png

  • Both SSCOMs are set to transmit at a 100ms interval, and you can observe the phenomenon of mutual sending and receiving.

USB TO 4CH Serial Converter 27.png

Resource

Software

Driver

  • VCP Driver (Or you can download it from FTDI website, and you can download the corresponding drivers for other systems on this website.)
  • Support driver-free on Linux systems.

Software

Datasheet

STP File

FAQ

 Answer:
  • It may be caused by a corrupt registry, and you can address it by performing the following steps:

1. Download the registry-related demo and run it.
USB TO 4CH Serial Converter FAQ-01.png
USB TO 4CH Serial Converter FAQ-00.png
2. If there is a pop-up window, please allow the demo to run.
3. Download Configuration Software to select CDMUninstaller.exe and open. (If CDMUninstaller.exe can not successfully run, please use CDMuninstallerGUI.exe.)
USB TO 4CH Serial Converter FAQ-02.png
4. Configure and execute (please erase the value of "Product ID" -> Click "Add" -> ③ -> Click "Remove Devices" -> OK)
USB TO 4CH Serial Converter FAQ-03.png
5. If the CDMUninstaller.exe can not successfully run (as the following shows), please use CDMuninstallerGUI.exe.
USB TO 4CH Serial Converter FAQ-04.png
6. Reinstall the driver. (If the four COM ports cannot be recognized, perform this operation again.)

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Support



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