PLC控制系统主要由输入部分、CPU、采样部分、输出控制和通讯部分组成,如图1所示。输入部分包括控制面板和输入模板;采样部分包括采样控制模板、AD转换模板和传感器;CPU作为系统的核心,完成接收数据,处理数据,输出控制信号;输出部分有的系统用到DA模板,将输出信号转换为模拟量信号,经过功放驱动执行器;大多数系统直接将输出信号给输出模板,由输出模板驱动执行器工作;通讯部分由通讯模板和上位机组成。
The GE Fanuc 90-70 IC697MEM732 provides 256 Kbyte with 256Kbyte Non-Volatiel Flash memory, 32-bit CMOS Expansion Memory for the IC697CPU78X CPU modules. Memory on the GE Fanuc 90-70 IC697MEM732 is retained by battery on CPU. GE Fanuc 90-70 does not require additional slot.
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