摘要
介绍了PLC扫描工作特征,基于此特征分析了计时器和工作时序,介绍了循环控制程序、输出响应速度快程序、“和”计数器程序的设计技巧。
This paper introduces the working characteristics of PLC scanning, analises the working time sequence of counter based on the characteristics,and presents the programming skills of cycle controlling program,quick output response program,and the 'Sum' counter program.This provider references for engineers in the field of PLC control.
出处
《基础自动化》
CSCD
1999年第5期55-57,共3页
Basic Automation
关键词
PLC
扫描特征
程序设计
三相步进电机
PLC,scanning characteristics,time sequence,program design,skill