摘要
介绍了一种可编程控制干燥系统的设计思想，分析了现场不同检测信号的提取方法，较详细叙述了顺序控制指令的用法并给出了预热、加温。
An idea of designing a PLC controlled stoving system has been introduced.A pick-up method to field-signals is analyzed.The usage of sequence-control instructions is described in detail,and a program ladder-chart of pre-heating,heating and cooling process is presented.
