近年来,随着生产的发展,对生产过程的顺序控制提出了更高的要求。本文主要介绍用计算机软件编程以实现生产过程顺序控制。一、顺序控制功能顺序控制由机能分类: 1.以继电器盘为代表的逻辑顺序控制如图1所示,继电器A触点输入是逻辑“1”,而同时另一个触点E输入是逻辑“1”时,希望能接通负载,有输出;同样,E输入为逻辑“1”,而另一个输入B是逻辑“O”时,希望能接通负载,有输出。后一种情况在继电器回路对应于常闭接点。 In recent years, with the development of production, higher requirements have been put forward on the order control of the production process. This article describes the use of computer software programming to achieve the order of the production process control. First, the sequence control function Sequence control by the function of the classification: 1. Relay to the logic represented by the control sequence shown in Figure 1, the relay A contact input is a logic “1” while the other contact E input is logic “ 1 ”, it is hoped that the load can be turned on and that there is output; similarly, when the E input is logic“ 1 ”and the other input B is logic“ O ”, it is desirable to turn on the load and have output. The latter case corresponds to the normally closed contact in the relay circuit.