描述
从结构上分，PLC分为固定式和组合式（模块式）两种。固定式PLC包括CPU板、I/O板、显示面板、内存块、电源等，这些元素组合成一个不可拆卸的整体。模块式PLC包括CPU模块、I/O模块、内存、电源模块、底板或机架，这些模块可以按照一定规则组合配置。
National Instruments PCI-GPIB IEEE 488 Card “Tested”
National Instruments NI cDAQ-9172 8-Slot USB Chassis
National Instruments PXI-1411 Frame Grabber
National Instruments NI PXI-1000B Embedded Computer
National Instruments CPCI-GPIB Card
National Instruments PXI-1002 PXI Chassis with Plug-Ins
National Instruments PCI-6032E with software
National Instruments IMAQ-A6822- new in box, sealed.
National Instruments PXI-6224 Multifunction DAQ 32-Chan
National Instruments PCI-GPIB IEEE 488.2 DAQ Card
National Instruments PCI-DIO-96 Digital I/O Board
National Instruments CB-68T CA-1000 Enclosure
