USB 2xRS422/485

USB to Serial providing two RS422/485 serial port. Up to 921,600 data transfer rates and the 128 byte deep transmit and 384 byte receive FIFOS

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USB to Serial providing two RS422/485 serial ports. Up to 921,600 data transfer rates and the 128 byte deep transmit and 384 byte receive FIFOS, coupled with 1Mbit line drivers deliver uncompromising performance on your laptop/PC.
USB to serial is the quick low cost way to connect your computer to a serial comms enabled device. Boost software gives industry leading functionality and compatibility.
RS422 Standard: RS422 allows one transmitter and up to 10 receivers with data transmitter rates up to 10 megabits per second for distances up to 40 feet and up to 100 Kilobits per second for distances up to 4000 feet (1219 metres).To achieve good long distance noise immunity, 2 wires are used to carry each signal, configured as a twisted pair of cables. The TXD pair and RXD pair are used to carry the data whilst the RTS pair and CTS pair lines are used for handshaking. Thus 2 twisted pairs are used without handshaking and 4 twisted pair cable is used with handshaking both these schemes allow full duplex data communications.
RS485 Standard: RS485, based on the RS422 standard allows up to 32 driver/receivers pairs on a party line data bus. Whilst only one of these should be transmitting data at any time, the rest can all simultaneously listen to the data. Handshaking is performed by software protocol. Two twisted pairs form a full duplex system. Often only one twisted pair cable is used as the TXD and RXD lines are tied together; this is known as half duplex mode. Traditionally, the RTS signal is used as the party line control to tristate the PC’s transmitter, but in multitasking operating systems like Windows or Linux the only reliable method is hardware autogating. Brainboxes RS422/485 products implement a state of the art autogating circuit thus ensuring error free communications in half duplex configuations.
These products do away with traditional issues with USB technology so you can buy with confidence!
With Brainboxes industry renowned Lifetime Warranty and Lifetime Support!

Microsoft signed drivers (easy installation & robust operation) for:
Windows 7 32 bit and 64 bit editions
Windows Vista 32 bit and 64 bit editions
Windows XP 32 bit & 64 bit editions

Key features:
• 2 port RS422/485
• USB to Serial
• 128 Byte Tx and 384 Byte Rx FIFOs
• Up to 921,600 Baud
• 2xDB9 connector (9 Pin Male)
• Drivers for all popular operating systems
• Sample Programs, Test & Terminal software
• Lifetime Support
• Lifetime Warranty (registration required)
• Supplied with USB Cable
• Side hinges to allow DIN rail mounting

Tags

usb to serial, RS422/485