The block diagram of the system software that the soft start-up and the variable parameters PI control is realized with assemble language 80c196 according with sampling period is given out.
同时，给出了以80c 196汇编语言实现的，根据采样周期进行软启动或变参数PI控制的软件程序框图。
The control software adopts 984 Ladder Diagram. Its complicated logic is difficult to understand, and it doesn't accord with IEC programming language.
空分装置控制系统采用非iec标准的984梯形图编程，并且梯形图程序复杂，故障查找困难。
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