Description
调试与查错也都很方便。用户在购到所需的PLC后，只需按说明书的提示，做少量的接线和简易的用户程序编制工作，就可灵活方便地将PLC应用于生产实践。可编程序控制器一直在发展中，所以至今尚未对其下最后的定义。国际电工学会（IEC）曾先后于1982.11；1985.1和1987.2发布了可编程序控制器标准草案
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