描述
CPU模块主要由微处理器(CPU芯片)和存储器组成。在PLC控制系统中厂CPU模块相当于人的大脑，它不断地采集输入信号，执行用户程序，刷新系统的输出；存储器用来储存程序和数据。
输入(1nput)模块和输出(Output)模块简称为I／O模块，它们是系统的眼、耳、手、脚，是联系外部现场设备和CPU模块的桥梁。
National Instruments PCI-5102 Digitizer Scope DAQ Card
National Instruments VXI-MXI-2 P/N 183345D-03 UNUSED
National Instruments PCI-GPIB IEEE 488.2 Card +Cable
National Instruments NI PCI-6221 Card TESTED
National Instruments PCI-1200 National Instruments Pci-
One-day shipping available
National Instruments NI PCI-6601 Card
National Instruments NI PXI-6533 Card TESTED
NATIONAL INSTRUMENTS NI PCI-6071E DATA BOARD TESTED
National Instruments VXIcpu-030 183513A-021 VXIbus Mod.
National Instruments. DAQCard-6062E. Tested to Function
National Instruments PXI-8331 MXI-4 Interface for PXI
