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NI (National Instruments) PCI-8431/8 8-Port, PCI, RS485/RS422 Serial Interface Device
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NI (National Instruments) · PCI

PCI-8431/8

The NI PCI-8431/8 is an eight-port PCI serial interface device supporting RS485 and RS422 communication. It provides non-isolated serial channels for PCI-based systems.

ManufacturerNI (National Instruments)
ModelPCI-8431/8
Part Number779148-01
Product Type8-Port, PCI, RS485/RS422 Serial Interface Device
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Bus ConnectionPCI
Isolation TypeNone
Number of Serial Channels8
Supported Serial ProtocolsRS485, RS422
Front Connection TypeSCSI Type
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Overview

Product overview

Key product information and technical features.

The PCI-8431/8 provides eight serial channels for communication with RS485 and RS422 devices through a PCI bus connection. Its channels are non-isolated, and the front connection is listed by NI as SCSI Type.

The interface supports high-performance DMA transfers, multithreading, and multiprocessor operation. Selectable 4- and 2-wire transceiver modes support full- and half-duplex communication, and the interface appears as standard COM ports for programs that use serial communications.

  • Eight serial channels on a PCI interface.
  • Supports RS485 and RS422 serial protocols.
  • Selectable 4- and 2-wire transceiver modes for full- and half-duplex communication.
  • High-performance DMA transfers with multithreading and multiprocessor support.
  • Standard COM-port presentation for serial communication programs.
Verified specifications

Technical data

Verified product specifications.

Bus ConnectionPCI
Isolation TypeNone
Number of Serial Channels8
Supported Serial ProtocolsRS485, RS422
Front Connection TypeSCSI Type
NI part numbers779148-01
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NI

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PCI

Bus Connection

PCI-8431/8

This product

Platform shown as listed by NI. Confirm controller, chassis and software fit for your system with NI before integration.
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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Letter Of Volatility (NI)Letter Of Volatility · 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.

How many serial channels does the PCI-8431/8 provide?

It provides eight serial channels supporting RS485 and RS422 communication.

What host bus does the PCI-8431/8 use?

It uses a PCI bus connection.

Are the PCI-8431/8 serial channels isolated?

No. NI lists the isolation type as None.

Does the PCI-8431/8 support 2-wire and 4-wire communication?

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

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