描述
梯形图与流程图混合语言。这种语言，梯形图与流程图两者兼用，可使PLC程序结构化。它用流程图把PLC程序划分成若干结构块，并规范块间的逻辑联系。用梯形图再确定块中的种种量间的逻辑关系。这种混合语言有不同的实现方法，而且多用于大型的PLC的编程
National Instruments NI PXI-6031E DAQ Board
National Instruments LAB-PC-1200 card
National Instruments AT-MIO-16E-10 card
National Instruments: 183480E-01 PCI-DIO-32H Board
National Instruments SCXI 1127 HV Relay Switch & Cable
National Instruments AT-GPIB/TNT 183663C-01 PnP
National Instruments NI PCI6024-E Great Deal FREE SHIP
National instrument PCI-6527 48 channel I/O | TESTED
National instrument PCI-GPIB/+ interface 183617B-01
National Instruments: NI card MODEL # PCI-DIO-96
