1.1 Functional Description
The USB-COM485-PLUS2 is a USB to a dual interface RS485 level serial UART adaptor incorporating FTDI’s FT2232H Hi-Speed USB2.0 (480Mb/s) to dual serial UART interface IC device. The FT2232H handles all the USB signaling and protocols. The adaptor provides a fast, simple way to connect devices with an RS485 interface to USB.
USB-COM485-PLUS2 is a USB to a dual-port RS485 adapter.
The integrated electronics of the USB-COM485-PLUS2 utilise the FTDI FT2232H and includes RS485 level shifters plus TXD/RXD LEDs to provide a visual indication of data traffic through the module.
1.4 Features Adds dual RS-485 serial port by connecting to a USB 2.0 Hi-Speed interface. Easy plug & play installation and RS-485 device connection Operates 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 a standard Windows COM port 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: 4K byte transmit buffer, 4K byte receive buffer RS-485 data signals: Data+, Data-, GND Powered by USB port. No external power adapter required. +5V output available. Serial port speed up to 10Mbps Serial Communication Parameters
o Parity: None, Even, Odd
o Data bits: 7, 8
o Flow control: X-ON/X-OFF, None Two DE-9P male connector LEDs indicate USB Enumeration, RxD, TxD for monitoring port status & easy diagnostics Operating temperature of -40°C to +85°C Echo and non-Echo two modes can be selected.