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NI PXI-8423/4

Isolated 4-Port RS485 Interface

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  • Discontinued: The NI PXI-8423/4 is no longer available. NI recommends the NI PXI-8433/4.
  • 2000 V optical isolation
  • Interrupt sharing between ports
  • LabVIEW Real-Time compatibility for deterministic control
  • NI-Serial device driver works with NI-VISA for easy development
  • 460.8 kbit/s maximum transfer rate


The NI PXI-8423/4 is no longer available. Contact NI for replacement options. National Instruments recommends the NI PXI-8433/4 as a drop-in replacement with higher performance.

NI PXI-8423 Series modules are asynchronous RS485 interfaces with 2000 V of optical isolation and either two or four ports. NI PXI-8421 Series modules are asynchronous RS485 interfaces that offer eight ports.

No part number and pricing information available for NI PXI-8423/4.

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