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USB to RS-485 Converter Cables, FTDI Chip
These cables provide a fast and simple method to convert RS-485 level serial UART to USB. The USB connector contains a small circuit board featuring the FTDI FT232RQ (RS 730-0168) serial UART interface IC to handle all the USB signalling and protocols. There are two LEDs to indicate data being received and transmitted. They have a maximum UART Baud Rate of 3 Mbaud.
These converters are supported with Microsoft WHQL certified VCP drivers for Windows, Apple Mac, and Linux. All of which are available, royalty-free from FTDI website.
The other end of the cable is bare, tinned wire ended and can be customised to your needs using various connectors.
FTDI Chip USB-RS485-WE-1800-BT cable length 1.8 m
FTDI Chip USB-RS485-WE-5000-BT cable length 5 m
Features of FT232R applicable to USB-RS485 Cable The USB-RS485 cable uses FTDIs FT232RQ USB to serial UART IC device. This section summarises the key features of the FT232RQ which apply to the USB-RS485 USB to serial RS485 converter cables.
Operating system | Windows 8.1 / 8 (32/64-bit), Windows 7 (32/64-bit), Vista (32/64-bit), XP, Server 2003/8R2 (32/64-bit), 2000, ME, 98Se (all WHQL compliant) |
Linux | |
Mac OS 8, OS 9, OS X | |
Windows CE.NET (Version 4.2 and greater) | |
Android | |
Processor | FTDI FT232RL |
RS485 Interface | Included screw terminal header / single wires |
Fail-safe bias resistors | Yes |
USB interface | Standard Type A Male |
Ports | 1-port available for RS485 |
Signals | RS485, 2-wire half duplex: D+, D-, GND |
Baud rate | 300-921.600bps (up to 3kbps by using alising) |
TX / RX buffer size | 256 Byte Transmit Buffer / 128 Byte Receive Buffer |
Adjustable USB transfer sizes for TX and RX | From 64 bytes to 4096 bytes |
Adjustable latency timer | 1 to 255 msec |
Adjustable read and write timeouts | 0 to 10000 msec |
Flow Control | None, Xon/Xoff, Hardware |
COM port accessible by | Included virtual COM port drivers or FTD2XX.DLL |
Special features | Compatible with Modbus RTU/ASCII, BACnet |
Supports non-standard baud rates | |
Automatic Send Control | |
Electrostatic (ESD) protection | 600W surge protection, 15KV static electricity protection |
Current draw | Static: less than 80mA. Dynamic average: less than 150mA |
Interface compliance | USB1.1,2.0,3.0, EIA/TIA RS-232 |
Working temp | -20°C to 60°C |
Package: 1 x usb rs485 adapter cable
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