1.1 Functional Description
The USB-COM422-PLUS4 is a USB to a quad interface RS422 level serial UART adaptor incorporating FTDI’s FT4232H Hi-Speed USB2.0 (480Mb/s) to quad serial UART interface IC device. The FT4232H handles all the USB signaling and protocols. The adaptor provides a fast, simple way to connect devices with an RS422 interface to USB.
USB-COM422-PLUS4 is a USB to a quad-port RS422 adapter.
The integrated electronics of the USB-COM422-PLUS4 utilise the FTDI FT4232H and includes RS422 level shifters plus TXD/RXD LEDs to provide a visual indication of data traffic through the module.
1.4 Features Adds quad RS-422 serial ports by connecting to a USB 2.0 Hi-Speed interface. Easy plug & play installation and RS-422 device connection Works with USB 1.1 & 2.0 Host and Hub ports Industry Standard FTDI chip set & device drivers for maximum compatibility Microsoft Windows® WHQL-certified, Mac OS X, Linux and Windows CE device drivers Installs as four standard Windows COM ports COM port number can be changed to any available COM port number, to support HyperTerminal, or any other serial communications software application running in Windows Supports Windows Server 2008, 2003, Vista, XP, 2000, Windows CE, Linux, Mac OS X FIFO: 2k byte transmit buffer, 2k byte receive buffer RS-422 data signals: TxD+, TxD-, RxD+, RxD-, RTS+, RTS-, CTS+, CTS-, GND Powered by USB port. No external power adapter required. Serial port speed up to 10Mbps Serial Communication Parameters
o Parity: None, Even, Odd
o Data bits: 7, 8
o Flow control: RTS/CTS , X-ON/X-OFF, None Four DE-9P male connectors LEDs indicate USB Enumeration, RxD, TxD for monitoring port status & easy diagnostics Operating temperature of -40°C to +85°C