三种国外集散控制系统(DCS)功能块扫描规则和执行顺序的分析和总结  

Analysis and Summary of Scanning Rules and Execution Sequence of Three Foreign Distributed Control Systems(DCS)Function Blocks

作　　者：陈朝权 吴文虎 Chen Chaoquan;Wu Wenhu(Southwest Institute of Chemical Co.,Ltd.,Chengdu,610225,China)

机构地区：[1]西南化工研究设计院有限公司,成都610225

出　　处：《仪器仪表用户》2020年第8期106-108,82,共4页Instrumentation

摘　　要：用功能块进行图形化编程组态是DCS编程组态的主要方式。本文对DCS功能块的扫描规则和执行顺序进行了分析总结,对科学规划编程组态架构,合理分配控制系统资源,减轻系统CPU负荷具有重要的指导帮助作用。Using function block graphical programming and configuration is the main way of DCS programming and configuration.This article analyzes and summary the scanning rules and execution sequence of DCS function blocks.It is an important guiding role in scientific programming and configuration architecture,allocating control system resources reasonably and reducing system’s CPU load.

关 键 词：DCS 功能块 基本扫描周期 执行顺序 中断 忽略 DELTAV CENTUM CS3000 I/A Series 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]