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NI (National Instruments) PCIe-8431/2 PCI Express, 2-Port, RS485/RS422 Serial Interface Device
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NI (National Instruments) · PCI Express

PCIe-8431/2

The NI PCIe-8431/2 is a PCI Express serial interface device with two channels supporting RS485 and RS422 communication. It features a D-SUB front connection and selectable 2- and 4-wire transceiver modes.

ManufacturerNI (National Instruments)
ModelPCIe-8431/2
Part Number782124-01
Product TypePCI Express, 2-Port, RS485/RS422 Serial Interface Device
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30-Day Warrantystandard coverage
30-Day Returnspolicy applies
Technical Supportmodel & compatibility help
Bus ConnectionPCI Express
Isolation TypeNone
Number of Serial Channels2
Supported Serial ProtocolsRS485, RS422
Front Connection TypeD-SUB
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Overview

Product overview

Key product information and technical features.

The PCIe-8431/2 provides two serial channels for communication with RS485 and RS422 devices through a PCI Express host connection. This non-isolated model belongs to NI's Serial Interface family.

The device supports high-performance DMA transfers, multithreading, and multiprocessor operation. Selectable 4- and 2-wire transceiver modes support full- and half-duplex communication.

  • Two serial channels on a PCI Express interface.
  • RS485 and RS422 serial protocol support.
  • D-SUB front connection.
  • High-performance DMA transfers with multithreading and multiprocessor support.
  • Selectable 4- and 2-wire transceiver modes for full- and half-duplex communication.
Verified specifications

Technical data

Verified product specifications.

Bus ConnectionPCI Express
Isolation TypeNone
Number of Serial Channels2
Supported Serial ProtocolsRS485, RS422
Front Connection TypeD-SUB
NI part numbers782124-01
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NI

Manufacturer

PCI Express

Bus Connection

PCIe-8431/2

This product

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Manuals & software

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Getting Started (NI)Getting Started · ni.com
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Specifications (NI)Specifications · ni.com
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Dimensional Drawings (NI)Dimensional Drawings · ni.com
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Product Page (NI)Product Page · ni.com
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FAQ

Product-specific questions

Product-specific answers based on available technical information.

What host interface does the PCIe-8431/2 use?

It uses a PCI Express host connection.

How many serial channels does it provide, and which protocols are supported?

The PCIe-8431/2 provides two serial channels supporting RS485 and RS422.

Is the PCIe-8431/2 isolated?

No. The specified isolation type is None.

Does it support both 2-wire and 4-wire communication?

Yes. It supports selectable 2- and 4-wire transceiver modes for half- and full-duplex communication.

What front connection type does it use?

The front connection type is D-SUB.

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