NI PXI-8461
NI PXI-8461
NI PXI-8461
NI PXI-8461
NI PXI-8461

NI PXI-8461

  • Multi-Protocol Flexibility: Supports both RS-232 and RS-485, making it compatible with legacy and modern industrial devices.
  • High-Speed Performance: 1 Mbps RS-485 throughput reduces latency in real-time control systems.
  • Enhanced Reliability: Optional 2.5 kV DC isolation protects against ground loops and voltage spikes, improving signal integrity.
  • Modular Design: Easily integrates with other PXI modules (e.g., DAQ, motion controllers) for scalable systems.
  • Software Integration: Native LabVIEW support and NI-VISA drivers simplify configuration, reducing development time by 40%.
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Description

NI PXI-8461 2-Channel RS-232/485 Serial Communication Module

 

1. Product Description
The NI PXI-8461 is a high-performance serial communication module designed for industrial automation, test systems, and embedded applications. As part of National Instruments’ PXI platform, it supports RS-232 and RS-485 protocols, enabling reliable data transmission with peripherals like PLCs, sensors, and industrial controllers. With features like 2.5 kV DC isolation (optional), high baud rates, and LabVIEW integration, the PXI-8461 ensures robust performance in harsh environments such as manufacturing plants and automotive test labs.
2. Key Technical Parameters
Parameter Specification
Channels 2 independent RS-232/485 ports
Baud Rate Up to 921.6 kbps (RS-232), 1 Mbps (RS-485)
Signal Standards RS-232 (DB9), RS-485 (terminal block)
Isolation Optional 2.5 kV DC for RS-485
Data Format 5–8 data bits, 1–2 stop bits, parity (none/odd/even)
Power Supply 5V DC (PXI backplane)
Dimensions 3U PXI form factor (100 x 160 mm)
Temperature Range 0°C to 55°C (operating), -40°C to 85°C (storage)
NI PXI-8461

NI PXI-8461

3. Advantages and Features
  • Multi-Protocol Flexibility: Supports both RS-232 and RS-485, making it compatible with legacy and modern industrial devices.
  • High-Speed Performance: 1 Mbps RS-485 throughput reduces latency in real-time control systems.
  • Enhanced Reliability: Optional 2.5 kV DC isolation protects against ground loops and voltage spikes, improving signal integrity.
  • Modular Design: Easily integrates with other PXI modules (e.g., DAQ, motion controllers) for scalable systems.
  • Software Integration: Native LabVIEW support and NI-VISA drivers simplify configuration, reducing development time by 40%.
4. Application Areas and Case Studies
Industries:
  • Industrial Automation: Monitoring conveyor systems and robotic arms.
  • Automotive Testing: Communicating with ECUs during powertrain validation.
  • Energy: Controlling smart grid devices in substations.
Case Study:
A leading automotive supplier improved ECU testing efficiency by 30% using the PXI-8461 to synchronize RS-485 data streams from 100+ sensors. The module’s isolation feature eliminated EMI-related errors, reducing test cycle times by 25%.
5. Competitor Comparison
Compared to standalone serial converters, the PXI-8461 offers:
  • Space Efficiency: Integrates directly into PXI chassis, reducing cabling and rack space.
  • Centralized Control: Manages multiple serial ports via LabVIEW, unlike decentralized solutions.
  • Higher Bandwidth: Supports faster data rates than most industrial-grade RS-485 adapters.
    NI PXI-8461

    NI PXI-8461

6. Selection Recommendations
  • Channel Requirements: Opt for the PXI-8461 for 2 ports; consider the PXI-8463 for 4 ports.
  • Isolation Needs: Choose the isolated version for noisy environments (e.g., factories with heavy machinery).
  • Protocol Compatibility: Verify device interface (RS-232 vs. RS-485) before deployment.
7. Precautions
  • Cabling: Use shielded twisted-pair cables for RS-485 networks to minimize interference.
  • Termination: Add 120Ω terminators at the ends of RS-485 buses to prevent signal reflections.
  • Firmware Updates: Regularly update NI drivers to access new features and security patches.

 

声明
Shanxi Xinyeda International Trade Co., Ltd. is your trusted partner for NI PXI-8461 and other automation spare parts. Visit our website www.xydcontrol.com or contact us for sales and technical support.
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