National Instruments PXI-8431 RS-485/RS-422 Multi-Channel Serial Interface Series
Features

• Minimal CPU Usage with DMA Transfers
• Memory Mapped to Prevent I/O Resource Conflicts
• LabVIEW Real-Time Compatible
• Customizable Baud Rates up to 3 Mb/s and 128 B Transmit and Receive FIFOs

The National Instruments PXI-8431 RS-485/RS-422 Multi-Channel Serial Interfaces are a high-performance, serial interface for high-speed communication with RS-485/RS-422 devices at rates up to 3 Mb/s. With the high-performance DMA engine, you achieve high throughput with minimal CPU usage, which is especially useful for applications with simultaneous communication on multiple serial ports. With hyperthreading and multiprocessor compatibility, you can obtain higher speeds and better efficiency.