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ACCES I/O
Two-port USB to RS-232/422/485 serial interface adapter |
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 INTERNATIONAL GROUND SHIPPING: For qualified orders, we will waive the Brokerage/Handling Fee for Custom Clearance and Documentation No other hidden fees will be collected from you when packages arrive. Guaranteed [ Detailed Explanation ] |
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Product Description: FEATURES
FACTORY OPTIONS
FUNCTIONAL DESCRIPTIONThe USB-COM-2SM is a two-port asynchronous serial communication adapter designed for use with any computer system equipped with a USB port. Multiple peripherals such as POS, barcode scanners, scales, date-entry terminals, data acquisition modules, and automation equipment can now be recognized and used on a single USB port. Simply install the included software and connect the unit to your USB port. It instantly provides two RS-232, RS-422, or RS-485 serial ports which can be selected on a port by port basis. It is now easier than ever to add serial ports and serial devices to any application along with easy plug-and-play and hot-swapping features.The unit enclosure is 4 inches wide by 4 inches deep by 1.8 inches high. The adapter is supplied with a 6 foot USB cable and has two male DB9 connectors with jack-screws for secure cable connections. The DB9 connectors are conveniently located at the front of the unit and feature easy-to-read LEDs indicating serial port activity. The USB connector is located at the back of the unit and also features a LED for USB status. The USB-COM-2SM is fully compatible with both USB 1.1 and USB 2.0 ports. The OEM (board only) version provides just the board without the enclosure and is ideal for a variety of embedded OEM applications. An additional USB input header is provided on the board for OEMs along with a downstream USB port for connecting additional USB devices.
SERIALType FT232 UARTs are used as asynchronous communication elements. This includes 384-byte receive / 128-byte transmit FIFO buffers for high data throughput and to protect against lost data in multitasking systems. Crystal oscillators located on the card permit precise baud rate capability up to 230.4K for use in RS-232 mode, using ICL3243 type drivers. Speeds up to 921.6K are achievable using RS-422 & RS-485. The driver/receivers used are type SP491 which are capable of driving long communication lines at high baud rates. They can drive up to ±60 mA on balanced lines and receive inputs as low as 200 mV differential signal superimposed on common mode noise of +12V to -7V. In case of communication conflict, the driver/receivers feature thermal shutdown.
OEM USB/104 FORM FACTORWhat makes the OEM (board only) option unique is that its PCB size and mounting holes match the PC/104 form factor (without the bus connections). This allows our rugged serial board to be added to any PCI-104 or PC/104 stack by connecting it to a simple USB port usually included on-board with embedded CPU form factors such as EBX, EPIC, and PC/104 — especially important since many newer CPU chipsets do not support ISA and have plenty of USB ports. The USB-COM-2SM OEM board can also be added into many pre-existing standard PC/104 based systems and enclosures. The OEM version is perfect for a variety of embedded applications. The board's pre-drilled mounting holes allow for installation using standoffs inside most enclosures or systems.
Extra USB connectionsThis board has two optional USB onboard five pin connectors. One connector allows you the added feature of connecting to a spare USB port on the onboard USB1.1 hub. This would provide an additional, 'daisy-chained' USB 1.1 bus to which you can attach an additional ACCES I/O USB product or any 3rd party USB devices you may wish. Up to 180mA is still available without requiring the added device to have its own 5VDC power source. The second five pin connector allows the board to have an onboard USB connection rather than the standard type B connector that is accessible externally on the enclosure. This is useful in OEM embedded or high vibration applications where a tighter fit USB connection is required than a standard USB plug.
APPLICATIONSThe industrial communications market commonly uses RS-422 and RS-485 interfaces due to their differential lines providing robustness, longer cabling and ability to withstand industrial noise. The USB-COM-2SM with its tiny enclosure and its easy connectivity provides portable connections to laptops for this kind of industrial monitoring for the mobile test market. At the same time, conventional RS-232 devices can also be supported. The USB-COM-2SM unit can be used in the following markets.
ACCESSORIESThe USB-IIRO4-2SM is available with optional cable assemblies, screw termination boards and DIN rail mounting provisions.
SoftwareThe USB-COM-2SM features hot-plug functionality which allows quick connect or disconnect whenever you need additional serial communications on your USB port. A Complete Software Support Package is provided including an easy to use terminal program for testing out your COM ports. This package contains sample programs and source code in Visual Basic, Delphi, C++ Builder, and Visual C++ for Windows. Also incorporated is a graphical setup program in Windows. The adapter installs as Standard COM ports in all Windows and Linux operating systems. Supported operating systems include Windows, Linux, WinCE.net, Mac OS-8, OS-9, OS-X. Use in other operating systems may also be supported, contact Factory. |
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