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USB-TO-2CH-RS485 User Guide

Overview

USB TO 2CH RS485 is an industrial USB to RS485 isolated converter with a rail-mount ABS case design, featuring the original FT2232HL chip, built-in power isolation, ADI magnetic isolation and TVS protection circuit, etc. This converter is easy to operate, with zero-delay automatic transmission and reception conversion, and boasts characteristics such as fast, stable, reliable and safe communication. It is an ideal choice for industrial control equipments and/or applications with high communication requirements.

Features

  • Adopts original FT2232HL chip, fast communication, stable and reliable, better compatibility.
  • Extending USB to 2CH RS485, allows concurrent and independent communication for each channel.
  • Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal.
  • Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption.
  • Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic.
  • Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock proof performance.
  • Built-in 120R terminal resistor on the RS485 ports, configurable via jumper for flexible switching.
  • 3 LEDs for indicating the power and transceiver status.
  • Industrial rail-mount ABS case design, small in size, easy to install, and cost-effective.

Parameters

PRODUCT TYPEIndustrial grade isolated USB to RS485 converter
HOST PORTUSB
DEVICE PORTRS485
USBOperating voltage5V
ConnectorUSB-B
Protection200mA self-recovery fuse, isolated output
Transmission distanceAbout 5m
ISOLATED
RS485
ConnectorScrew terminal
Direction controlHardware automatic control
Protection600W lightningproof and surge-suppress, 15KV ESD protection (onboard 120R balancing resistor)
Transmission distanceAbout 1.2km (at low rate)
Transmission modePoint-to-multipoints (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more)
Baud rate300bps ~ 3Mbps
LED INDICATORSPWRRed power indicator, lights up when there is USB connection and voltage is detected
TXDGreen TX indicator, lights up when the USB port sends data
RXDBlue RX indicator, lights up when the device ports send data back
OPERATING ENVIRONMENTTemperature-15℃ ~ 70℃
Humidity5%RH~95%RH
OPERATING SYSTEMMacOS, Linux, Android, Windows 10/8.1/8/7/XP
APPEARANCEEnclosureRail-mount ABS case, suitable for 35mm DIN rail
Dimensions81.9 × 54.0 × 32.0mm

Onboard Interface

PORTA1B1PEA2B2PE
RS485PORT1 RS485
Differential signal A+
PORT1 RS485
Differential signal B-
Signal GroundPORT2 RS485
Differential signal A+
PORT2 RS485
Differential signal B-
Signal Ground



Dimensions


Driver Installation

USB Driver Installation

  • Download the VCP Driver.
  • Double click on CDM212364_Setup.exe and install it.
  • Click on Extract, and then "NEXT".


  • Click on I accept this agreement, and then click on "NEXT", and click on "Finish".


  • After connecting the PC, you can see the usable COM port number in the device manager.


Hardware Test

Preparation

Test environment: PC (Windows)
Required accessories:

  • USB TO 2CH RS485 x 1pcs
  • USB-A to USB-B cable
  • Wires

RS485 Test

  • Connect the RS485 connector of the USB TO 2CH RS485 module, that is, A1 --> A2, B1- --> B2, PE --> PE, the connection diagram is referenced below:


  • Open two SSCOM windows on the PC and the corresponding COM ports:


  • Select the baud rate as 115200, input the characters to be sent, check show time and package, and Open COM.


  • Select one SSCOM, send it at 100ms intervals, and then you can the 2 Windows send and receive data as shown below:


Resource

Datasheet

Software & Driver

Support

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

Email: services01@spotpear.com


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