NI PXI-8431/8 (RS485/RS422) High-Performance, 8-Port Serial Interface for PXI

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  • Minimal CPU usage with DMA transfers
  • Memory mapped to prevent I/O resource conflicts
  • Certified Windows quality driver for quick installation
  • Includes converter cable (SCSI-68 to 8 DB-9 male connectors)
  • LabVIEW Real-Time compatible
  • Customizable baud rates up to 3 Mb/s and 128 B transmit and receive FIFOs)
  • Configure Complete PXI System
The National Instruments PXI-8431/8 is a high-performance, 8-port serial interface for high-speed communication with RS485/RS422 devices at rates up to 3 Mb/s. High-performance RS485/RS422 interfaces are also available in 2 and 4-port versions from NI. The NI PXI-8431/8 offers flexible baud rates for data transmissions up to 3 Mb/s to within 1 percent accuracy for nonstandard baud rates and 0.01 percent accuracy for standard baud rates. 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 take advantage of the latest PC technology for higher speeds and better efficiency. National Instruments also offers easy-to-use, powerful software that significantly reduces your development time for systems that use serial communication with the PXI-8431/8.

Specifications Documents

Specifications Summary


To use the NI PXI-8431/8 , you need all items in the diagram below. Select Option 1 if you already own a PXI System, or Option 2 if you do not already own a chassis, controller, or software.

Roll over the icons below to learn why you need each item in the system

PXI System

1 Cable

NI PXI-8431/8




NI PXI-8431/8 and Accessories Only
NI PXI-8431/8 - 779537-01 Qty $ 929 each
Cable - Shielded
RS485/RS422 Null Modem Cable (1m) - 183283-01
Select length:
Qty $ 28 each

Subtotal: $ 957

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