USB-COMi+

1-Port USB to Serial Adapter (RS-232/422/485), 15KV ESD Protection

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Description

The USB-COMi + USB-to-Industrial Single RS-232/422/485 Adapter is designed to make industrial communication port expansion quick and simple. Connecting to a USB port on your computer or USB hub, the USB-COMi + instantly adds an industrial communication port to your system. By taking advantage of the USB bus, the USB Industrial I/O Adapter makes it easier than ever to add RS-232, RS-422 or RS-485 device to your system with easy plug-and-play and hot plug features. Adapting the new technology, the industrial I/O communication port expansion now takes the new bus with easy and convenient connectivity.

Plugging the USB-COMi + to the USB port, the adapter is automatically detected and installed. There are no IRQ & COM port conflicts, since the port doesn’t require any additional IRQ, DMA, memory as resources on the system. The RS-232/422/485 port functions as native Windows COM port, and it is compatible with Windows serial communication applications.

The USB Industrial I/O Adapter provides instant connectivity to RS-232/422/485 communication device for factory automation equipment, multi-drop data collection devices, barcode readers, time clocks, scales, data entry terminals, PC to PC long distance communications and serial communication in harsh environments. The USB Industrial I/O provides industrial solution for applications requiring single node or multi-drop communications over short and long distance.

Features


  • Adds a high speed RS-232/422/485 serial port by connecting to a USB port
  • Serial operation mode can be easily changed by sliding open the upper case
  • Compact size cable type converter with a cable length of 1m
  • Powered by USB port, no external power adapter required
  • LEDs indicate TxD and RxD for easy port monitoring and diagnosis
  • Installs as a standard Windows COM port
  • Full RS-232 modem control signals and hardware/software flow control
  • Automatic transmit and receive control for 2-wire RS-485 half-duplex mode
  • Built-in termination and biasing
  • Serial port protected with 15KV ESD protection
  • Non-standard baudrates supported
  • Easy plug and play installation and RS-232/422/485 device connection
  • RS-232 max bitrates up to 1Mbps
  • RS-422/485 max bitrates up to 12Mbps
  • Supports Windows 11, 10, 8.1, 8, 7, XP, Windows Server 2025, 2022, 2019, 2016, 2012 R2, 2012 and 2008 R2
  • Supports Linux Kernel version 3.0 and later
  • Supports Apple-provided VCP on OS X 10.9 and later

Specifications

USB Bus
InterfaceUSB 2.0 Full Speed, USB 1.1 compliant
Speed12Mbps, full-speed USB
USB ConnectorUSB type B
Serial Interface
InterfaceRS-232/422/485
Number of Ports1
ConnectorDB9 male
Max. SpeedRS-232:up to 1Mbps
RS-422/485:up to 12Mbps
RS-232 SignalsDCD, RxD, TxD, DTR, GND, DSR, RTS, CTS, RI
RS-422 SignalsTxD-, TxD+, RxD+, RxD-, GND, RTS-, RTS+, CTS+, CTS-
RS-485 Signals (4 wire)TxD-, TxD+, RxD+, RxD-, GND
RS-485 Signals (2 wire)Data-, Data+, GND
FIFO256 bytes transmit 128 bytes receive
Protection15kV ESD protection for all signals
Serial Communication Parameters
Data Bits7, 8
ParityNone, Even, Odd, Mark, Space
Stop Bit1, 2
Flow ControlHardware (RTS, CTS), XON/XOFF
Drivers Support
WindowsWindows 11, 10, 8.1, 8, 7, XP
Windows Server 2025, 2022, 2019, 2016, 2012 R2, 2012 and 2008 R2
LinuxLinux Kernel version 3.0 and later
MacApple-provided VCP on OS X 10.9 and later
Power
Power InputPower supplied via USB connector
No external power needed
Mechanical
CasingPlastic, ABS
Environmental
Operating Temperature0°C to 55°C (32°F to 131°F)
Storage Temperature-20°C to 75°C (-4°F to 167°F)
Operating Humidity5% to 95% RH
Safety ApprovalsCE, FCC

Document


Product Manual

Software


Driver Installation

You need to install driver first, prior to hardware installation. Do not connect the USB-to-Serial Adapter to the USB port of your computer, before you finish driver installation. 



Uninstalling Drivers

Uninstallation Guide For Windows 2000

Uninstallation Guide For Windows 10, 8.1, 8, 7, Vista, XP, Server 2016, Server 2008, Server 2003

Pinout

RS-232 DB9 Male Connector Pinout

PINSIGNAL
1DCD
2RxD
3TxD
4DTR
5GND
6DSR
7RTS
8CTS
9RI
WordPress Table

RS-422 DB9 Male Connector Pinout

PINSIGNAL
1TxD- (A)
2TxD+ (B)
3RxD+ (B)
4RxD- (A)
5GND
6RTS- (A)
7RTS+ (B)
8CTS+ (B)
9CTS- (A)
WordPress Table

RS-485 4-Wire (Full duplex) DB9 Male Connector Pinout

PINSIGNAL
1TxD- (A)
2TxD+ (B)
3RxD+ (B)
4RxD- (A)
5GND
WordPress Table

RS-485 2-Wire (Half duplex) DB9 Male Connector Pinout

PINSIGNAL
1Data- (A)
2Data+ (B)
5GND
WordPress Table