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生产过程中经常需要在一台机械上加工不同的产品或完成不同的工艺程序,此时其程序控制回路的设计与一般的程序回路设计不同,即需要把几个单独的顺序程序合并到一个公共的回路中,采用程序选择器使该回路按组成其回路之一的程序进行工作,这种回路称复合气控程序回路。用简化卡诺图法可以顺利地解决这种复合气控回路的设计,其关键是将程序选择器H和它的辅助变量h和h看成是辅助记忆元
In the production process, it is often necessary to process different products on one machine or to complete different process programs. In this case, the design of the program control loop is different from the design of the general program loop. That is, several separate sequence programs need to be merged into one public Of the circuit, using the program selector so that the circuit is composed of one of its circuits to work, this circuit is called compound gas control program loop. Using simplified Karnaugh map method can successfully solve the design of this complex control circuit, the key is to program selector H and its auxiliary variables h and h as a secondary memory unit