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

Interface Introduction

Dimensions

Driver Installation

• Download the VCP Driver:

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

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

• 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).
  

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.

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

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:

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

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

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

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.

• 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.

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

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.

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

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

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.

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

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

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

• SSCOM

Datasheet

• FT4232H Datasheet

STP File

• STP file

FAQ

Support

Monday-Friday (9:30-6:30) Saturday (9:30-5:30)

Email: services01@spotpear.com