USB-8COM Plus
(USB-8COM-PRO, USB-8COMi-RM)

USB to 8 x RS232/422/485 ports (isolated, DSub-9 male, expandable)

VScom USB-8COM Plus, an octal port USB-to-Serial adapter for RS232/422/485

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The USB-8COM Plus provides easy serial port expansion over USB 2.0 connecting to high speed RS232 or RS422/485 devices. The device is fully ESD and surge protected, bus powered and accommodated in a ruggedized metal housing. Furthermore, it can operate across a large range of temperature levels to cope with harsh operating conditions. The ISO version is 2.5kV electrically isolated to withstand unbalanced ground loops that arise in hazardous industrial environment. Lastly, both DIN-Rail and wall-mounting options are available.

Flexible Three-Way Serial Ports

The serial ports allow different operating modes — which are easily configured via a single DIP switch — to fully support RS232, RS422 and RS485 protocols. The operating mode of serial ports chosen via DIP switch is either same for all ports or individually for each port by "USBCOM Configuration Utility" software. The differential line termination for RS485 (120Ω) is automatically controlled by choosing the appropriate operating mode. High/Low biasing resistors are not needed; as such, hassle-free usage is guaranteed for the user.
Com Port drivers are available for Windows, Linux and Mac OS X. A configuration tool allows easy access to special Windows driver options.

High Speed and Isolation

USB 2.0 High Speed connection allows serial data rates of up to 12Mbps for RS422/485 and 921.6kbps for RS232. Every non-standard bitrate (e.g. 500kbps) can easily be set up in the range of up to 3.5Mbps.
USB-xCOM Plus adapters are 16kV ESD and surge protected at USB and serial ports interfaces. Additionally, the serial ports are 2.5kV electrically isolated (ISO version only), making them ideal for deployment in harsh industrial environments.

Power and Port Expansion

Multiple USB-xCOM Plus devices can be concatenated via the USB Type A at the rear side, creating up to 32 serial ports. In concatenated configuration, the local power input of each expansion module must be used.
USB-xCOM Plus 4 and 8 ports adapters can also be used to expand the serial ports for NetCom Plus Servers (4 and 8 ports).

Features
USB 2.0 to 8 x RS232/422/485 High-Speed serial ports 921.6kbps Driver for Windows, Linux, Mac OS X LEDs for Power and TxD/RxD activity ESD protection on USB and serial ports 2.5kV electrical isolation (ISO version only) Self powered Wide range of power input 9 - 54V DC Metal housing 19-inch rack and wall mounts Wide range of operating temperatures
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Specifications
USB Interface
USB-Input	USB 2.0 High Speed, USB 1.1 compliant
Connector	USB type B
Circuits	FTDI FT4232H Genesys GL850G
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Serial Interface
No. of Ports/Type	8 x RS232/422/485 configurable by DIP switch and software
Connector	DB-9 male
Protection	16kV ESD surge protection 2.5kV Electrical isolation on ISO version
Operating Modes	RS232 RS422 full duplex (120Ω on/off) RS485 4 wire, full duplex (120Ω on/off) RS485 2 wire, half duplex (120Ω on/off)
Configuration	The single DIP switch at rear side configures all ports in the same operating mode or individually via software: Windows: using "VScom USB Configurator" Utility All OS: using Terminal emulation The operating mode controls termination. No High/Low biasing resistors needed
Signals non-ISO	RS232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND RS422: Tx+/-, Rx+/-, GND RS485 4-wire: Tx+/-, Rx+/-, GND RS485 2-wire: Data+/-, GND
Signals ISO	RS232: TxD, RxD, RTS, CTS, GND RS422: Tx+/-, Rx+/-, GND RS485 4-wire: Tx+/-, Rx+/-, GND RS485 2-wire: Data+/-, GND All signals isolated for 2.5kV
RS485 Data Direction Control	ARTc (Automatic Receive Transmit control)
Data Bits	7, 8
Stop Bits	1, 2
Parity	None, Even, Odd, Mark, Space
Flow Control	RTS/CTS, XON/XOFF
Baudrate	RS232: 180bps - 921.6/1000kbps RS422: up to 12Mbps RS485: up to 12Mbps
LEDs	TxD/RxD for each port
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Serial Port Expansion
Connector	USB 2.0 High Speed type A, 500mA @5V at rear side
Expansion Ports	connect USB-xCOM Plus to add more serial ports, also electrically isolated
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Software
Drivers	Windows 2000 to Windows 10 (x86 and x64) Windows Server 2000 to 2016 (x86 and x64) Linux `(Kernel 3.4 and later built-in)` Mac OS X
Installation	The driver is already installed (Linux), or installs by automatic Download after Device connection (Windows).
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Power Requirement
Input Voltage	5V (USB) 9-54V Dcin
Power consumption USB-8COM Plus	Bus powered: 5V 600mA via USB Self powered: DCin 9 - 54V, 5W + 3W for Port Expansion
Power consumption USB-8COM Plus ISO	Bus powered: not available Self powered: DCin 9 - 54V, 6W + 3W for Port Expansion
Port Expansion	DCin supply is compulsory to support Port Expansion.
Connector	Bus powered: USB Type B, no external supply Self powered: 3-Pin Terminal Block
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Housing and Mounting
Case	0.8mm sheet metal
Weight	0.9kg, w/h box 1.5kg
Dimensions	196×147×44 mm³ (W×L×H)
Packaged	310×192×60 mm³
Mounting	19-inch Rack Wall mount
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Environmental Data
Operating Temp	−25°C - 75°C
Storage Temp	−30°C – 85°C
Ambient Humidity	5-95% non condensing
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Standards and Certifications
Declarations	CE, FCC
EMI	EN 55022 Class B EN 61000-3-2: Limits of harmonic current emissions EN 61000-3-3: Limitation of voltage changes 47 CFR FCC Part 15 Subpart B
EMS (EN 55024)	EN 61000-4-3: Radiated RFI EN 61000-4-4: Electrical Fast Transient EN 61000-4-5: Surge EN 61000-4-6: Induced RFI EN 61000-4-8: Power Frequency Magnetic Field EN 61000-4-11: Power supply dips
ESD	EN 61000-4-2 4kV contact 8kV air for Serial Ports USB DCin Power connector
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MTBF (Mean Time Between Failures)
MTBF non-ISO	28.1 Years @ 25°C 16.2 Years @ 45°C
MTBF ISO	18.7 Years @ 25°C 8.4 Years @ 45°C
Standard	Telcordia (Bellcore) Standard; RelCalc. 5.0 BELL-7
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Warranty
Warranty Period	2 years
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Ordering Information
612	USB-8COM Plus (8x RS232/422/485, non-isolated, expandable)
613	USB-8COM Plus ISO (8x RS232/422/485, isolated, expandable)
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Options
6031	Power adapter 110-230V AC to 12V @1A, DC, EU plug
6034	Power adapter 110-230V AC to 12V @1A, DC, US plug
6064	DB9F-to-TB/10 for RS422/485 free wiring option
6061	DB9F-to-RJ45 for changing from DB9 to CAT5 wiring (Optimised for RS422/485 operating modes)
6062	RJ45-to-DB9M for changing back from CAT5 to DB9 wiring (Required to match the DB9 pinout at USB-xCOM Plus)
661	Serial Null-Modem adapter 9PF-9PF, change male to female
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Packaging
Packing list	USB-8COM Plus device USB 2.0 High-Speed cable Mounting brackets for 19-inch rack Wallmount plates Terminal block for Power Supply 4 rubber feet for table mode
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USB-8COM Plus(USB-8COM-PRO, USB-8COMi-RM)

Flexible Three-Way Serial Ports

High Speed and Isolation

Power and Port Expansion

USB-8COM Plus
(USB-8COM-PRO, USB-8COMi-RM)