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NI PCIe-8433/2 (Industrial RS485/RS422)

High-Performance, Isolated Serial Interface for PCI Express

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  • Port-to-port and port-to-PC isolation: 60 VDC continuous (CAT I), 2000 V withstand (Vrms/5 s)
  • Selectable 4- and 2-wire transceiver modes for full- and half-duplex communication
  • Compatibility with Windows and LabVIEW Real-Time OSs
  • Minimal CPU overhead with high-speed DMA interface; multicore processor and hyperthreading support
  • Flexible standard and nonstandard baud rates from 57 baud to 3,000,000 baud
  • Compatibility with Modbus RS485 serial PLCs; 128 B transmit and receive FIFOs


The NI PCIe-8433/2 offers all of the features of the high-performance NI PCI-843x boards plus high-voltage port-to-port isolation and PCI Express connectivity. The NI PCIe-8433/2 features high-speed communication with RS485 and RS422 devices at rates of up to 3,000 kbit/s and offers configurable baud rates for data transmissions between 57 baud and 3,000,000 baud 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. With hyperthreading and multiprocessor support, 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 using serial communication with the NI PCIe-8433/2.

Specifications Documents

Specifications Summary

General
Product Name PCIe-8433/2
Product Family Serial
Form Factor Serial , PCI Express
Part Number 781745-01
Operating System/Target Windows
LabVIEW RT Support Yes
Source Internally Powered
Serial Standard Compatibility RS-485
Port Information
Number of Ports 2
Max Cable Length 1.2 km
I/O FIFO Buffer Size 128 B
Max Device Connections / Port 31
Handles RTS/CTS Handshake Lines Yes
Interrupt Sharing Between Ports Yes
Direct Memory Access (DMA) Yes
Physical Specifications
Length 16.67 cm
Width 11.12 cm
I/O Connector 9-pin D-Sub (DB-9)
Minimum Operating Temperature 0 °C
Maximum Operating Temperature 55 °C
Part Number Description Est Ship  US Dollars Qty
High-Performance, Isolated RS485/RS422 Serial Interface
781745-01NI PCIe-8433/2, 2 Port, Isolated RS485/RS422 Serial Interface12 - 20$ 478.00
Cables and Accessories
182844-01DB-9 Terminating Connector for RS-485 Networks12 - 20$ 31.00
183283-01RS485 Null-Modem Cable, DB-9 Female to DB-9 Female, 1m5 - 10$ 27.00
183283-02RS485 Null-Modem Cable, DB-9 Female to DB-9 Female, 2m5 - 10$ 32.00
183283-04RS485 Null-Modem Cable, DB-9 Female to DB-9 Female, 4m5 - 10$ 37.00

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Extended Warranties

National Instruments designs and manufactures all products to minimize failures, however unexpected failures can still occur. Extended warranties provide a fixed economical price at the time of system purchase, covering any repair costs for up to three years. In addition, they offer the following benefits:

  • Significant cost savings compared to individual repair incidents
  • Fault location, diagnostics, and repair by NI any time the system product fails
  • All parts and labor costs covered as well as any adjustments needed to restore the hardware to manufacturing specifications

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