描述
开放式PLC硬件结构采用CPU+外围模块+接口构成，各个接口都按标准设计，大大提高了PLC的开放性，使其能方便地与大系统连接。编程语言遵循国际标准IEC61131-3，并将基于PC的编程软件作为PLC首选编程工具。系统硬件部分采用高性能51内核处理器STC89C51
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