描述
控制规模主要指控制开关量的入、出点数及控制模拟量的模入、模出，或两者兼而有之（闭路系统）的路数。但主要以开关量计。模拟量的路数可折算成开关量的点，大致一路相当于8～16点。依这个点数，PLC大致可分为微型机、小型机、中型机及大型机、超大型机。微型机控制点仅几十点，的V80系列PLC本体从16点到40点，OMRON公司的CPM1A系列PLC，
National Instruments PCI-MIO-16E-1 (6070E) NI DAQ Card
National Instruments USB-8473 High-Speed CAN Interface
NATIONAL INSTRUMENTS SC-2070 INTERFACE UNIT
National Instruments NI cFP-AIO-610 Module
National Instruments PCI-GPIB IEEE 488.2 DAQ Card
National Instruments NI PCI-GPIB IEEE 488.2 Card.Tested
NATIONAL INSTRUMENTS BNC-2110 SHIELDED CONNECTOR BLOCK
National Instruments PCI-6023E
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
