描述
PLC可分为箱体式及模块式两大类。微型机、小型机多为箱体式的，但从发展趋势看，小型机也逐渐发展成模块式的了。如OMRON公司，原来小型机都是箱体式，现在的CQM1则为模块式的。
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
National Instruments NI USB-6008
NI National Instruments BNC-2081 Connector Block 2080
