PXIE-8431/8 National Instruments Programmable controller

Description

PXIE-8431/8 National Instruments Programmable controller

Product Dimensions：

Product Description

The PXIe-8431/8 provides eight physically independent ports that support 2-wire and 4-wire RS485/RS422 protocols. Built on the PXI Express architecture, it offers significantly higher bandwidth and lower latency than traditional PCI-based serial cards, making it ideal for systems requiring synchronized communication across many devices.

Product Parameters

The PXIe-8431/8 is defined by its industry-leading baud rate precision and port density.

Product Advantages

• Extreme Speed: Supports baud rates up to 3 Mbps, allowing for rapid data exchange with modern high-speed industrial sensors and motor controllers.

• Custom Baud Rates: Unlike standard serial ports that are limited to fixed speeds, the PXIe-8431 can be programmed to any custom baud rate with exceptional precision.

• High Density: Provides 8 ports in a single PXI Express slot, maximizing the utilization of chassis space.

• DMA Data Transfers: Utilizes Direct Memory Access to offload data processing from the CPU, ensuring the system remains responsive even when all 8 ports are streaming at maximum speed.

• Advanced Hardware Flow Control: Supports XON/XOFF and RTS/CTS hardware handshaking to prevent data loss during high-speed bursts.

Key Considerations (Precautions)

• Termination: For RS485 networks, proper termination resistors (typically 120 Ω) are required at the ends of the bus to prevent signal reflections, especially at baud rates above 115.2 kbps.

• Cable Selection: Because this module supports up to 3 Mbps, you must use high-quality twisted-pair shielded cabling. Standard unshielded wire will likely result in data corruption at high speeds.

• Breakout Accessories: The module uses a high-density VHDCI 68-pin connector. You will need a compatible cable (like the SHC68-C68-S) and a breakout box (like the SCB-68A) to access the individual port signals.

• Non-Isolated: This specific model is not isolated. If your application involves large ground loops or high-voltage environments, consider using an external isolator or an NI module with “Isolated” in the name to protect the PXIe backplane.

Product Applications

1. Industrial Network Monitoring: Interfacing with large-scale Modbus/RS485 networks to monitor factory sensors and power meters.

2. Aerospace & Defense: Communicating with high-speed avionics sensors or satellite ground control equipment using RS422.

3. Automotive Testing: Real-time communication with multiple Engine Control Units (ECUs) or vehicle subsystems during validation.

4. Scientific Research: Synchronizing data collection from multiple serial-based laboratory instruments.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

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