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USBG-8COM-PRO 

 

USBG-8COM-PRO 8-Port USB to RS-232, 422, 485 Auto Setup Adapter Manual 

 

The 

USBG-8COM-PRO

 2-Port 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 series Industrial I/O Adapters 

instantly add RS-232/422/485 ports to your system. By taking 

advantage of the USB bus, the 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.  

 

When plugging the Industrial I/O Adapter to the USB port, the adapter 

is 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 

USBG-8COM-PRO

 2-Port Series Industrial I/O Adapter can be set to work in different RS-232/422/485 modes. The 

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 BIASing resistor conveniently by software.  

 

One of the unique features of this serial adapter is that the products are configured by user-friendly hardware 

configuration utility program 

“UsbComCfg”

. There is no need to open the case of the product 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.  

 

Features & Specifications 

 

 

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/Windows 7. 

 

Specifications 

 

 

Interface: USB 2.0 (up to 480 Mbps) 

 

Serial connector:  8 DB9 male connectors 

Summary of Contents for USBG-8COM-PRO

Page 1: ...ing 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 BIASing resistor conveniently by software One...

Page 2: ...3 XP 2000 driver to install the device driver 4 The USB COM install program will auto detect the OS type and install the driver automatically Note in Windows 7 or Vista OS you will find another dialog...

Page 3: ...ase proceed with the following steps to uninstall the 2003 XP 2000 driver 1 Insert the USB COM Series Driver and Utility CD into your CD ROM 2 The USB COM Series Driver and Utility CD dialog box appea...

Page 4: ...r com 7 Click No to proceed 8 When the message Status System clean completed appears double click Exit to complete the USB to serial drivers uninstall 9 Press Start button and select Control Panel 10...

Page 5: ...second Windows Driver Package 15 Reboot the computer to complete the driver uninstall Uninstalling Windows 7 or Vista Drivers Windows 7 and Vista have many new security features You need to proceed w...

Page 6: ...com 5 Locate your Device under the Ports COM LTP section and right click on it to bring up the menu shown 6 Select uninstall and be sure to click the box for Delete the driver software for this device...

Page 7: ...than one USB Serial Port COMx installed in your PC you need to repeat from step 5 to step 6 to delete the driver software for each port 7 Locate your Device under the Universal Serial Bus Controllers...

Page 8: ...s either via serial console port or by the provided GUI Graphic User Interface configuration utility program UsbComCfg NOTE You must finish the driver and hardware installation first before proceeding...

Page 9: ...ctivate 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 p...

Page 10: ...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...

Page 11: ...uplex mode with automatic data receive and transmit control transmit data echo 7 RS422 RS 422 mode 8 RS232 RS 232 mode BIASing and Termination Resistor Press 9 to enable Tx Rx BIASing resistors If the...

Page 12: ...n first before proceeding to hardware configuration The GUI hardware configuration utility program needs to work with the first serial port of the PRO series Industrial I O Adapters Please proceed wit...

Page 13: ...stor 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 Wh...

Page 14: ...TxD Pin 4 DTR Pin 5 GND Pin 6 DSR Pin 7 RTS Pin 8 CTS Pin 9 RI RS 422 Signal Pin outs of DB 9 Male Pin 1 TxD A Pin 2 TxD B Pin 3 RxD B Pin 4 RxD A Pin 5 GND Pin 6 RTS A Pin 7 RTS B Pin 8 CTS B Pin 9...

Page 15: ...Wire Half duplex Signal Pin outs of DB 9 Male Pin 1 Data A Pin 2 Data B Pin 5 GND RS 485 Signal Wiring Point to Point 4 Wire Full Duplex 2 TxD B RxD B RxD A TxD B TxD A GND USBG 8COM PRO RS 422 Devic...

Page 16: ...Sales coolgear com www CoolGear com Multidrop RS 485 2 Wire Half duplex RS 485 Device Data B Data A GND RS 485 Device x Data B Data A GND USBG 8COM PRO 2 Data B 1 Data A 5 GND...

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