描述
产品概述
NI PXI-8430是美国国家仪器（NI）推出的高性能PXI串行仪器控制模块，支持多协议异步串行通信，专为工业自动化、测试测量及科研领域设计。其集成灵活的接口配置与兼容性优化，适用于复杂外部串口硬件的控制与数据交互。
核心功能与特性
串行通信协议支持
-标准协议：RS232、RS422、RS485（支持半双工与全双工模式）；
-接口模式：
-4线（全双工）与2线（半双工）收发器模式；
-可配置波特率（最高可达115.2 kbps）。
硬件与兼容性设计
-隔离保护：
-通道间隔离电压可达250 Vrms（增强工业场景安全性）；
-多处理器兼容性：
-支持超线程技术及多CPU系统协同（提升多任务处理效率）；
-软件兼容性：
-串行接口可模拟为标准COM端口（兼容LabVIEW、TestStand及传统串口程序）。
扩展与连接选项
-物理接口：
-8端口9针D-SUB串行接口（通过附带电缆连接外部设备）；
-同步能力：
-支持PXI星触发（Star Trigger）实现多模块同步（需搭配同步控制器）。
技术参数
|类别|规格|
|总线接口|PXI本地总线（兼容PXI Express机箱）|
|功耗|典型值<10 W|
|工作温度|0°C–55°C（工业级温度范围）|
典型应用场景
工业控制：
-机床串口指令控制（如RS485通信）；
-分布式传感器网络数据采集（RS422长距离传输）；
科研测试：
-老旧仪器协议适配（通过COM端口兼容性简化系统集成）；
-多通道异步数据交互（如环境监测站与中央控制器通信）。
Product Overview
NI PXI-8430 is a high-performance PXI serial instrument control module launched by National Instruments(NI),which supports multi-protocol asynchronous serial communication and is designed for industrial automation,testing and measurement and scientific research fields.Its integrated flexible interface configuration and compatibility optimization are suitable for the control and data interaction of complex external serial hardware.
Core functions and features
Serial communication protocol support
-Standard protocols:RS232,RS422,RS485(supports half-duplex and full-duplex modes);
-Interface mode:
-4-wire(full duplex)and 2-wire(half duplex)transceiver modes;
-Configurable baud rate(up to 115.2 kbps).
Hardware and compatibility design
-Isolation protection:
-The channel isolation voltage can reach 250 Vrms(enhanced industrial scenario safety);
-Multiprocessor compatibility:
-Supports hyperthreading technology and multi-CPU system collaboration(improving multi-task processing efficiency);
-Software Compatibility:
-The serial interface can be simulated as a standard COM port(compatible with LabVIEW,TestStand and traditional serial port programs).
Extensions and Connection Options
-Physical interface:
-8-port 9-pin D-SUB serial interface(connect external devices via included cable);
-Synchronization capability:
-Supports PXI star trigger(Star Trigger)to achieve multi-module synchronization(need to be paired with a synchronization controller).
Technical parameters
|Category|Specifications|
|Bus interface|PXI local bus(compatible with PXI Express chassis)|
|Power Consumption|Typical Value<10 W|
|Operating temperature|0°C–55°C(industrial temperature range)|
Typical application scenarios
Industrial Control:
-Machine tool serial port command control(such as RS485 communication);
-Distributed sensor network data acquisition(RS422 long-distance transmission);
Scientific research tests:
-Old instrument protocol adaptation(simplifies system integration through COM port compatibility);
-Multi-channel asynchronous data interaction(such as environmental monitoring stations communicate with central controllers).
