VSCOM | USB-COM PRO | VSCOM USB PRO Series Industrial I/O Adapters

VSCOM USB PRO Series Industrial I/O Adapters
1.Introduction
The VSCOM USB PRO Series Industrial I/O Adapters are advanced USB to Serial
Adapters that connect to 1, 2, 4 or 8 RS-232/422/485 serial devices. The adapters
make industrial communication port expansion quick and simple. Connecting to a
USB port on your computer or USB hub, the VSCOM USB PRO series Industrial I/O
Adapters instantly add RS-232/422/485 ports to your system. By taking advantage of
the USB bus, the VSCOM USB PRO Series Industrial I/O Adapters make it easier than
ever to add RS-232 /422/485 devices to your system with easy plug-and-play and hot
plug features.
Plugging the VSCOM USB PRO Series Industrial I/O Adapters to the USB port, the
adapters are automatically detected and installed. There are no IRQ & COM port
conflicts, since the ports don’t require any additional IRQ, DMA, memory as
resources on the system. The RS-232 / 422 / 485 ports function as native Windows
COM ports, and are compatible with Windows serial communication applications.
The VSCOM USB PRO Series Industrial I/O Adapters can be set to work in different
RS-232/422/485 modes. Each serial port can be configured and set independently to
a specific operation mode. All the PRO Series Adapters are designed, in RS-422
mode or RS-485 mode, to provide options to configure termination and biasing of
data transmission lines. As per the requirement of your applications, you can enable,
or disable Tx ,Rx 120 Ohm termination resistor and Tx, Rx 750 Ohm BISAing resistor
conveniently by software.
One of the unique features of VSCOM USB PRO Series is that the products are
configured by user-friendly hardware configuration utility program “UsbComCfg”.
There is no need to open the case of the products and to set jumpers to enable or
disable a specific function. You can easily check the status of serial port operation
modes of each port by seeing the color of the LEDs and by running the provided
utility or any terminal programs.
In this manual, we refer to the products in the series collectively as VSCOM USB PRO
Series. The models in the VSCOM USB PRO Series are:
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USB-COM PRO
USB-2COM PRO
USB2-4COM PRO
USB2-8COM PRO
1-port RS-232/422/485 USB1.1 to Serial Adapter
2-port RS-232/422/485 USB1.1 to Serial Adapter
4-port RS-232/422/485 USB2.0 to Serial Adapter
8-port RS-232/422/485 USB2.0 to Serial Adapter
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2.0 Common Features
USB-COM PRO, USB-2COM PRO, USB2-4COM PRO, USB2-8COM PRO
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Adds high speed RS-232 / 422 / 485 port via USB connection
384 byte receive buffer
128 byte transmit buffer for high speed data throughput
Additional I/O or IRQ not required
Serial transmission speed up to 921.6 Kbps
Suitable for 4-wire RS-422/485 and 2-wire RS-485 applications
Auto transmit buffer control for 2-wire RS-485 half-duplex operation
Tx ,Rx Termination resistors installed on-board and easy enable/disable via
software utility or console port
Tx , Rx BIASing resistors installed on-board and easy enable/disable via
software utility or console port
Easy operation mode change via software utility or console port
Monitor LEDs of TxD, RxD of each port indicating port status
Monitor LEDs of mode indicating serial port operation mode
Virtual COM port drivers available for Windows 2000/XP/2003/Vista.
2.1 Specific Characteristics
2.1.1 USB-COM PRO (1 port)
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Interface :USB1.1 (12 Mbps)
Serial connector : one DB9 male connector and one 5-pin Terminal Block for
easy wiring
Power Supply: works in USB self power mode (5V, 500mA), no external power
supply is needed.
2.1.2 USB-2COM PRO (2 port)
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Interface :USB1.1 (12 Mbps)
Serial connector : two DB9 male connectors and two 5-pin Terminal Block for
easy wiring
Power Supply: requires an external power adapter (DC5V, 1.6A).
2.1.3 USB2-4COM PRO (4 port)
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Interface :USB2.0 (up to 480 Mbps)
Serial connector : four DB9 male connectors
Power Supply: requires an external power adapter (DC5V, 1.6A).
2.1.4 USB2-8COM PRO (8 port)
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Interface :USB2.0 (up to 480 Mbps)
Serial connector : eight DB9 male connectors
Power Supply : built-in internal switching power supply
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Windows Vista / 2003 / XP / 2000 Driver Installation
You need to have administrator privileges to install any new drivers under Windows
Vista /2003/XP /2000. To install the driver or update the configuration please log onto
Windows as "Administrator" or ask your system administrator to install the USB to
serial driver.
You need to install driver first, prior to hardware installation. Do not connect the
VSCOM USB PRO Series Industrial I/O Adapters to the USB port of your computer,
before you finish driver installation.
Please proceed with the following steps to install the driver:
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Insert the “USB PRO Series Driver and Utility” CD into your CD-ROM.
The “USB PRO Series Driver and Utility CD” dialog box appears.
Under “Driver Installation”, double click “Windows Vista, 2003, XP, 2000
driver” to install the device driver.
If your Windows is 64-bit, you need to select “Windows (64-bit) Vista, 2003,
XP driver” for driver installation.
After the message “FTDI CDM drivers have been successfully installed”
appears, click “finish” to complete the driver installation.
Plug in the USB PRO Series Adapter to the USB port of your computer.
Windows will finish installing the driver files.
3.1 Check Installation
You can now verify the installation has been completed successfully by looking
under Device Manager of the System Properties screen. (Go there by Start-SettingControl Panel-System Properties-Hardware-Device Manager.
The device should have installed as a "USB Serial Port (COMx)" attached to "USB
Serial Converter (A/B)".
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3.2 Change COM Port Properties & COM Port Number
This feature is particularly useful for programs, such as HyperTerminal, which only
work with COM1 through COM4. Please ensure that you do not change the COM Port
Number already in use.
To change the virtual COM port properties:
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Select the "USB Serial Port"
Click “Properties”.
Select "Port Setting" and “Advanced”.
Click the drop down arrow on COM Port Number and scroll to the required COM
port. Select "OK".
z Return to the Device Manager Screen. You will see that the USB Serial Port
installation has been changed to the new COM Port Number.
3.3 Uninstalling Windows Vista/2003/XP/2000 Drivers
To uninstall the Windows Vista/ 2003/ XP/ 2000 drivers:
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Remove the USB PRO series device from the USB Port or Hub.
Go to the Control Panel.
Open the Add or Remove program.
Select “FTDI USB Serial Converter Driver”.
Click “Chang/Remove”.
Select “Continue” to delete the drivers.
Select “Finish”.
Reboot the computer to complete the driver uninstall.
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4.0 Hardware Configuration
You can configure the operation mode of serial ports, enable/disable the Tx ,Rx
termination resistors, enable/disable Tx, Rx BIASing resistors either via serial
console port or by the provided GUI (Graphic User Interface) configuration utility
program (UsbComCfg).
You must finish the driver and hardware installation first, before proceeding to
hardware configuration. The serial console port and hardware configuration utility
program need to work with the first serial port of the VSCOM USB PRO series
Industrial I/O Adapters.
4.1 Configure Hardware via Serial Console port
You must find from the “Device Manager” of Windows the first serial port number of
your VSCOM USB PRO Industrial I/O Adapter (please refer to section 3.1---Check
Installation). Open this serial port with any terminal program (Hyperterminal, or other
terminal emulator program), select 38400 bps, 8 Bit, No Parity, 1 stop bit, flow control :
none for serial console port. (Note: the default flow control setting of Hyperterminal
is “hardware”, you need to change to “none” for proper operation).
After opening terminal program for serial console port, you must press the CONFIG
button and hold for two seconds until the blue LED will light. Following is an example
of the message that will appear, if the product is an USB2-4COM PRO.
[4#1] USB2-4COM PRO v1: please press <ENTER> to activate the menu
4.1.1 Hardware Configuration Main Menu.
Press <Enter> to activate the hardware configuration main menu.
The hardware configuration main menu messages are:
0 - Exit
---------------------------------------------1 - Show all port configurations
2 - Change port configurations
3 - Default port configurations
4 - Save port configurations
---------------------------------------------5 - Show configuration file
6 - Upload configuration file
Press <0> to exit the hardware configuration main menu and the blue LED will
change to dark.
Press <5> to show the hardware configuration file (decimal values)
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Press <6> to upload the hardware configuration file (decimal values)
Press <1> to show all port hardware configurations, the message are following:
Port 1: RS232
Port 2: RS422 (BIAS, TxTerm, RxTerm)
Port 3: RS485 auto, 2-wire with Echo (none)
Port 4: RS485 by RTS, 2-wire no Echo (BIAS, TxTerm)
Port 1: RS232
Port 1 is working in RS-232 mode.
Port 2: RS422 (BIAS, TxTerm, RxTerm)
Port 2 is working in RS-422 mode. BIASing resistor and Tx , Rx termination resistors
are enabled.
Port 3: RS485 auto, 2-wire with Echo (none)
Port 3 is working in RS-485 half duplex mode with automatic data receive and
transmit control. BIASing resistors and termination resistors are disabled.
Port 4: RS485 by RTS, 2-wire no Echo (BIAS, TxTerm)
Port 4 is working in RS-485 half duplex mode. BIASing resistors and Tx termination
resistors are enabled. The data receive and transmit control is by RTS signal.
Press <3> to set all ports in default configurations to RS-232 mode.
After press <3> to set all ports to default configurations, you must press <4> to save
default port configurations data into EEPROM.
Press <4> to save all configurations data into EEPROM. When the save operation is
finished, the screen will show:
OK - values were written to the eeprom
4.1.2 Change Port Configuration Menu
Press <2> to change port configurations menu, the message are:
0 - Back
--------------1 - Port 1
2 - Port 2
.
.
--------------x - All Ports
If the adapter is single-port version (USB-COM PRO), “x” is 2; dual-port version
(USB-2COM PRO), “x” is 3; quad-port version (USB2-4COM PRO), “x” is 5 and 8-port
version ( USB2-8COM PRO), “x” is 9.
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Press <0> to return to hardware configuration main menu.
Press <x> to set all the ports with same hardware configuration.
4.1.3 Port Setting Menu.
Press <1/2/3…> to set the port-1, port-2, port-3, etc.
Hardware configuration and port setting menu options include the following:
--------------------------------------------------0 - Back
--------------------------------------------------1 - RS485 by RTS, 4-wire
2 - RS485 by RTS, 2-wire no Echo
3 - RS485 by RTS, 2-wire with Echo
4 - RS485 auto, 4-wire
5 - RS485 auto, 2-wire no Echo
6 - RS485 auto, 2-wire with Echo
7 - RS422
8 - RS232
---------------------------------------------------9 - BIAS
10 - TxTerm
11 - RxTerm
Press <0> back to change port configurations menu.
Press <1> ~ <8> to select operation mode of serial port. the operation modes are :
4.1.4 Operation Mode of Serial Port.
1 - RS485 by RTS, 4-wire--- RS-485 full duplex mode, data receive and transmit
control by RTS signal.
2 - RS485 by RTS, 2-wire no Echo --- RS-485 half duplex mode, data receive and
transmit control by RTS, no transmit data
echo.
3 - RS485 by RTS, 2-wire with Echo--- RS-485 half duplex mode, data receive and
transmit control by RTS signal with transmit
data echo.
4 - RS485 auto, 4-wire--- RS-485 full duplex mode with automatic data receive and
transmit control.
5 - RS485 auto, 2-wire no Echo--- RS-485 half duplex mode with automatic data
receive and transmit control, no transmit data
echo.
6 - RS485 auto, 2-wire with Echo--- RS-485 half duplex mode with automatic data
receive and transmit control, transmit data echo.
7 - RS422 --- RS-422 mode
8 - RS232 --- RS-232 mode
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4.1.5 BIASing and Termination Resistor.
Press <9> to enable Tx ,Rx BIASing resistors. If the BIASing resistors are already
enabled, you can press <9> to disable it.
When Tx ,Rx BIASing resistors are enabled, the TxD+(data+) and RxD+ will pull-up
with 750 Ohm resistors. The TxD-(data-) and RxD- will also pull-down with 750 Ohm
resistors.
Press <10> to enable the Tx termination resistor. If the termination resistor is already
enabled, you can press <10> to disable it.
When Tx Termination resistor is enabled, a 120 Ohm termination resistor will be
added between the TxD+ (data+) and TxD- (data-).
Press <11> to enable the Rx termination resistor. If the termination resistor is already
enabled, you can press <11> to disable it.
When Tx termination resistors is enabled, a 120 Ohm termination resistor will be
added between the RxD+ and RxD-.
4.1.6 Completion of Serial Port Configuration Setting
After finishing the hardware configuration setting of serial port, press <0> twice to
return to the hardware configuration main menu.
0 - Exit
---------------------------------------------1 - Show all port configurations
2 - Change port configurations
3 - Default port configurations
4 - Save port configurations
---------------------------------------------5 - Show configuration file
6 - Upload configuration file
Press <4> to save all configurations data into EEPROM. When save operation is
finished, press <0> to exit the hardware configuration main menu. Now, the blue LED
changes to dark again. You exit the configuration mode and in the normal operation
mode now.
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4.2 Configure Hardware via GUI Utility Program
You must finish the driver and hardware installation first, before proceeding to
hardware configuration. The GUI hardware configuration utility program needs to
work with the first serial port of the VSCOM USB PRO series Industrial I/O Adapters.
Please proceed with the following steps to run the GUI hardware configuration
program:
1.
Press the CONFIG button for two seconds until the blue LED will light.
2.
Insert the “USB PRO Series Driver and Utility” CD into your CD-ROM.
3.
The “USB PRO Series Driver and Utility CD” dialog box appears.
4.
Under “Hardware Configuration Utility”, double click “UsbComCfg” to run
the GUI hardware configuration utility program.
5.
When following message appears, select the product model detected under
“Devices:”, and then choose the port number under “Ports” to start the
serial port hardware configuration.
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6.
Under “Mode”, you can select operation mode of serial port. For detail
information of operation mode, please refer to section 4.1.4.
7.
Under “Control Bits”, you can enable or disable BIASing and termination
resistors. This option is only available when the serial port is set to RS-422
and RS-485 mode.
7.1 Click “BIAS” to enable Tx ,Rx BIASing resistors.
If the BIASing resistors are already enabled, click “BIAS” again the
BIASing resistors will be disabled.
When Tx ,Rx BIASing resistors are enabled, the TxD+ (data+) and RxD+
will pull-up with 750 Ohm resistors, and the TxD-(data-) and RxD- will also
pull-down with 750 Ohm resistors.
7.2 Click “TxTerm” to enable the Tx termination resistor.
If the termination resistor is already enabled, click “TxTerm” again the Tx
termination resistor will be disabled.
When Tx termination resistors are enabled, a 120 Ohm termination resistor
will be added between the TxD+ (data+) and TxD- (data-).
7.3 Click “RxTerm” to enable the Rx Termination resistor.
If the termination resistor already enabled, click “RxTerm” again the Rx
termination resistor will be disabled.
When Rx termination resistors are enabled, a 120 Ohm Termination
resistor will be added between the RxD+ and RxD-.
8.
Wen you finish the hardware configuration setting, double click “Commit
Change” to save all configuration data into EEPROM. Press the CONFIG
button to exit the hardware configuration setting. The blue LED will change
to dark. You are in normal operation mode now.
9.
When a new VSCOM USB PRO Series Industrial I/O Adapter is attach to
system, please double click the “Search Devices” to re-start hardware
configuration setting for this device.
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5.0
LED Indicators
The VSCOM USB PRO Series Industrial I/O Adapters are designed with monitor LEDs
of TxD & RxD indicating serial port data transmit and receive status, and with
Operation Mode LEDs indicating serial port operation mode of RS-232/422/485.
5.1 Operation Mode and Mode LED Color
Operation Mode
Mode LED Color
RS-232
RS-422
RS-485 auto,2-Wire with echo
RS-485 auto,2-Wire no echo
RS-485 auto ,4-Wire
RS-485 by RTS,2-Wire with echo
RS-485 by RTS,2-Wire no echo
RS-485 by RTS,4-Wire
Red
Green
Orange
Orange
Orange
Orange
Orange
Orange
For detailed information of operation mode, please refer to section 4.1.4.
6.0
Signal Pin-outs and Wiring
6.1.1 RS-232 Signal Pin-outs of DB-9 Male
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
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6.1.2 RS-232 Signal Pin-outs of 5-Pin Terminal Block
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
DCD
RxD
TxD
DTR
GND
Only USB-COM PRO and USB-2COM PRO offer 5-pin terminal block.
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6.2.1 RS-422 Signal Pin-outs of DB-9 Male
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
TxD- (A)
TxD+(B)
RxD+(B)
RxD-(A)
GND
RTS- (A)
RTS+(B)
CTS+(B)
CTS- (A)
6.2.2 RS-422 Signal Pin-outs of 5-Pin Terminal Block
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
TxD- (A)
TxD+(B)
RxD+(B)
RxD-(A)
GND
Only USB-COM PRO and USB-2COM PRO offer 5-pin terminal block.
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6.2.3 RS-422 Signal Wiring
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USBx-xCOM PRO
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3
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5
RS-422 Device
RxD+ (B)
RxD- (A)
TxD+(B)
TxD- (A)
GND
TxD+(B)
TxD- (A)
RxD+ (B)
RxD- (A)
GND
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USBx-xCOM PRO
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4
5
7
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RS-422 Device
RxD+ (B)
RxD- (A)
TxD+(B)
TxD- (A)
GND
CTS+(B)
CTS- (A)
RTS+(B)
RTS- (A)
TxD+(B)
TxD- (A)
RxD+ (B)
RxD- (A)
GND
RTS+(B)
RTS- (A)
CTS+(B)
CTS- (A)
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6.3.1 RS-485 4 Wire (Full duplex) Signal Pin-outs of
DB-9 Male
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
TxD- (A)
TxD+(B)
RxD+(B)
RxD-(A)
GND
6.3.2 RS-485 4 Wire (Full duplex) Signal Pin-outs of
5-pin Terminal Block
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
TxD- (A)
TxD+(B)
RxD+(B)
RxD-(A)
GND
Only USB-COM PRO and USB-2COM PRO offer 5-pin terminal block.
6.3.3 RS-485 2 Wire (Half duplex) Signal Pin-outs of
DB-9 Male
Pin 1
Pin 2
Pin 5
Data- (A)
Data+(B)
GND
6.3.4 RS-485 2 Wire (Half duplex) Signal Pin-outs of
5-pin Terminal Block
Pin 1
Pin 2
Pin 5
Data- (A)
Data+(B)
GND
Only USB-COM PRO and USB-2COM PRO offer 5-pin terminal block.
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6.3.5 RS-485 Signal Wiring
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USBx-xCOM PRO
2
1
3
4
5
RS-485 Device
RxD+ (B)
RxD- (A)
TxD+(B)
TxD- (A)
GND
TxD+(B)
TxD- (A)
RxD+ (B)
RxD- (A)
GND
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RS-485 Device
USBx-xCOM PRO
2
1
5
Data+(B)
Data- (A)
GND
Data+(B)
Data- (A)
GND
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RS-485 Device x
Data+(B)
Data- (A)
GND
All brand names and trademarks are the property of their respective owners.
Manual Part No.: 039
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