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USB to RS485 Serial Converter - USB-COMi

Overview   Product Photo

The USB-COMi is a USB to RS485 serial converter. It allows easy serial port expansion without requiring IRQ, DMA, or I/O port resources. The converter allows the user to easily and economically connect RS485 devices to a host using USB. The RS485 communications standard is used by DGH sensor based data acquisition modules and many industrial control devices.

The converter is based on a single chip USB UART for transferring serial data over the Universal Serial Bus without the need for card-slots. The converter has an internal 128 byte transmit buffer FIFO and a 384 byte receive buffer FIFO. It supports baud rates of up to 230K. External power is not required since USB-COMi takes its power from the bus. Connection to USB is via a 3-foot detachable cable. Connection to RS485 is thru the converters DB-9 male connector.

The converter can interface DGH RS485 modules to a host using a USB connection. When using the USB-COMi with a DGH module or any RS485 device that requires wiring, DGH recommends itsí CA-3 cable. The CA-3 is a 3-foot serial cable with a female DB-9 connector and tinned wires ready for connection to RS485.

USB to RS-485 Network

Disclaimer: This product is not manufactured in the U.S.A.
DGH USB-COMi, USB to RS-485 Converter
USB to RS485 Converter
Documentation Drivers

  Datasheet     Win2K, WinXP, WinServer2003
  Connection Diagram     Win98, WinSE, WinME
  Installation Guide     Windows Vista
  CA-3 Serial Cable     Windows 7
USB Products
 USB-COMi USB-to-RS-485 Serial Communications Converter
USB-COMi Accessories
 CA-3 RS-232 Serial Cable, 9 Pin-F to tin leads
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