三菱PLC的ALT指令运用

ALT指令即交替输出指令,属于三菱PLC的功能指令。基本指令和其梯形图符号之间是互相对应的,而功能指令采用梯形图和助记符相结合的形式,意在表达本指令要做什么。功能指令主要用于数据的运算、转换及其他控制功能,使PLC成为真正意义上的工业计算机。

ALT instruction is alternately output instruction,a type of Mitsubishi PLC instruction.Its basic instruction and the symbols of the ladder diagram correspond to each other,while the functional instructions take the form of the combination of ladder diagram and mnemonic symbols,intended to express what the instruction is to do.Functional instructions are mainly used for data operation and conversion as well as other control functions,making PLC a real industrial computer.