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
Westinghouse 150 Amp Bus Plug Breaker Switch IBP IBPFD
Yaskawa CPCR-MR02C ServoPack Servo Drive CPCR-MR-02C
Cutler Hammer Westinghouse KD3400F 300 Amp A KT3300T
Cutler Hammer WH KD KD3400F KT3315TA KD3315 315 A Amp
Allen Bradley 1336S-BRF20-AN-EN-HA2-L5 2HP AC Drive
Westinghouse Numa Logic NL-771 Local Unit NL771
Westinghouse Numa Logic NL-772 Remote Unit NL772
GE General Electric TFL236175WL 175Amp A 175A Adj. Trip
GE General Electric TFL236150WL 150Amp A 150A Adj. Trip
Westinghouse Breaker JA JA3225W 225 Amp A 225Amp
