FTDI USB RS485 Serial 6Pin Wire End Converter Programming Module Cable for USB-RS485-WE-1800
The USB-RS485-WE-1800-BT_0.0 is a 1.8m long USB to RS485 converter cable.Using the FT232R chip combined with an RS485 level converter, the cable is a CE and FCC approved product which is one of the simplest USB – RS485 solutions around.Powered from the USB port, the RS485 signals are exposed on unterminated wires allowing the user to fit an appropriate connector matching their system needs.The cable can be used with FTDI’s drivers to provide a virtual COM port on a PC which is capable of communication rates with RS485 units from 300 baud up to 3 MBaud.
Data Rates:3MBaud
USB Speed:Full Speed (12Mbps)
Interfaces:UART
USB Connector:Type A
End Connector:Wire ended
Cable Length:1.8m
Cable Details:6 core, 5mm UL2464 24 AWG
Packages: PE pag
Channels:1
I/O Voltage:RS485
USB Class:FTDI Drivers
Virtual Com Port:Yes
Max Power Output:+5V / 250mA
FTDI Internal IC:FT232R
Operating Temperature:-40°C to +85°C1 Description
The USB-RS485 cable is a USB to RS485 levels serial UART converter cable incorporating FTDI‟s
FT232RL USB to serial UART interface IC device which handles all the USB signalling and protocols. The
cable provides a fast, simple way to connect devices with a RS485 interface to USB.
Each USB-RS485 cable contains a small internal electronic circuit board, utilising the FT232R, which is
encapsulated into the USB connector end of the cable. The FT232R datasheet, DS_FT232R, is available at
http://www.ftdichip.com. The integrated electronics also include the RS485 transceiver plus Tx and Rx
LEDs which give a visual indication of traffic on the cable (if transparent USB connector specified).
The other end of the cable is bare, tinned wire ended connections by default, but can be customised
using different connectors to support various applications.
The cable is USB powered and USB 2.0 full speed compatible. Each cable is 1.8m long and supports a
data transfer rate up to 3 Mbaud. Each cable supports the FTDIChip-ID™, with a unique USB serial
number programmed into the FT232R. This feature can be used to create a security or password
protected file transfer access using the cable. Further information and examples on this feature are
available at http://www.ftdichip.com under FTDIChip-ID Projects.
The USB-RS485 cables require USB drivers, available free from http://www.ftdichip.com, which are
used to make the FT232R in the cable appear as a virtual COM port (VCP). This then allows the user to
communicate with the USB interface via a standard PC serial emulation port (for example TTY). Another
FTDI USB driver, the D2XX driver, can also be used with application software to directly access the
FT232R on the cable though a DLL. This is illustrated in the Figure 1.1
About FT232RL
The FT232R is the latest device to be added to FTDI?s range of USB UART interface Integrated Circuit Devices. The FT232R is a USB to serial UART interface with optional clock generator output, and the new FTDIChip-ID? security dongle feature. In addition, asynchronous and synchronous bit bang interface modes are available. USB to serial designs using the FT232R have been further simplified by fully integrating the external EEPROM, clock circuit and USB resistors onto the device.
The FT232R adds two new functions compared with its predecessors, effectively making it a "3-in-1" chip for some application areas. The internally generated clock (6MHz, 12MHz, 24MHz, and 48MHz) can be brought out of the device and used to drive a microcontroller or external logic. A unique number (the FTDIChip-ID?) is burnt into the device during manufacture and is readable over USB, thus forming the basis of a security dongle which can be used to protect customer application software from being copied.
Single chip USB to asynchronous serial data transfer interface.
Entire USB protocol handled on the chip - No USB-specific firmware programming required.
UART interface support for 7 or 8 data bits, 1 or 2 stop bits and odd / even / mark / space / no parity.
Fully assisted hardware or X-On / X-Off software handshaking.
Data transfer rates from 300 baud to 3 Megabaud (RS422 / RS485 and at TTL levels) and 300 baud to 1 Megabaud (RS232).
In-built support for event characters and line break condition.
New USB FTDIChip-ID? feature.
New configurable CBUS I/O pins.
Auto transmit buffer control for RS485 applications.
Transmit and receive LED drive signals.
New 48MHz, 24MHz,12MHz, and 6MHz clock output signal Options for driving external MCU or FPGA.
FIFO receive and transmit buffers for high data throughput.
256 Byte receive buffer and 128 Byte transmit buffer utilising buffer smoothing technology to allow for high data throughput.
Adjustable receive buffer timeout.
Synchronous and asynchronous bit bang mode interface options with RD# and WR# strobes.
New CBUS bit bang mode option.
Integrated 1024 bit internal EEPROM for I/O configuration and storing USB VID, PID, serial number and product description strings.
Device supplied preprogrammed with unique USB serial number.
Support for USB suspend / resume.
Support for bus powered, self powered, and high-power bus powered USB configurations.
Integrated 3.3V level converter for USB I/O .
Integrated level converter on UART and CBUS for interfacing to 5V - 1.8V Logic.
True 5V / 3.3V / 2.8V / 1.8V CMOS drive output and TTL input.
High I/O pin output drive option.
Integrated USB resistors.
Integrated power-on-reset circuit.
Fully integrated clock - no external crystal, oscillator, or resonator required.
Fully integrated AVCC supply filtering - No separate AVCC pin and no external R-C filter required.
UART signal inversion option.
USB bulk transfer mode.
3.3V to 5.25V Single Supply Operation.
Low operating and USB suspend current.
Low USB bandwidth consumption.
UHCI / OHCI / EHCI host controller compatible.
USB 2.0 Full Speed compatible.
-40degC to 85degC extended operating temperature range.
Drivers are available which allow FTDI devices to work with the following operating systems:
Windows 8.1
Windows 8.1 x64
Windows 8
Windows 8 x64
Windows Server2012
Windows Server 2008 R2
Windows 7
Windows 7 x64
Windows Server 2008
Windows Server 2008 x64
Windows Vista
Windows Vista x64
Windows Server 2003
Windows Server 2003 x64
Windows XP
Windows XP x64
Windows ME
Windows 98
Linux
Mac OS X
Mac OS 9
Mac OS 8
Windows CE.NET (Version 4.2 and greater)
Android
Windows RT
Support for WinCE7.0
Initial functional testing conducted by FTDI has shown that the FTDI drivers function as expected on Windows CE 7.0
Support for older versions of Windows Desktop
NOTE: Microsoft have ended support for certifying XP and VISTA through their WHCK test program. As such current builds will still work on XP and VISTA but are not Microsoft certified.
Differences in Driver API
For most of these operating systems two types of driver are available: Virtual COM Port (VCP) drivers and direct (D2XX) drivers. The VCP driver emulates a standard PC serial port such that the USB device may be communicated with as a standard RS232 device. The D2XX driver allows direct access to a USB device via a DLL interface.
To locate the drivers you want to install for a device, select which of the driver types you wish to use (VCP or D2XX) and then locate the appropriate operating systems. With the exception of Windows 98 and Windows ME, all devices are supported in each driver package.
If a VCP driver is required for Android please refer to the following application note: TN 132 Adding FTDI Devices VCP Driver Support to Android
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