[关键词]
AVR单片机 国产PLC 可是化编程 可靠性 可实时监控
PLC is widely used in many industried areas at present.Japan has
Established the use of PLC as one of its basic policies.
Now,domestic market is occupied by various kinds of forigen electronic products,such as AB and GE of America,Mitsubilish,Panasonic and LOGO from Japan,Siemens in Germany and so on.
The unique character of this project is by using the latest AVR SCM to define the new PLC produced in our country.By this way,domestic new PLC can be expected to have its own position in the market.
[key words]
AVR SMC plc made in China programme eyeable reliability synchronological monitor
目 录
摘要 ……………………………………………………………………………4
引言 ……………………………………………………………………………4
一、前言 …………………………………………………………………………6
1.社会经济发展和科技进步的意义 ……………………………………………6
2．技术特征和创新点 ……………………………………………………………6
3．研制的成品………………………………………………………………………6
二、实现功能………………………………………………………………………6
三、硬件原理图……………………………………………………………………6
1．并入/串出………………………………………………………………………6
1．1 CD4021BC八段静态上升沿寄存器…………………………………………6
1．1．1概述………………………………………………………………………6
1．1．2特征………………………………………………………………………7
1．1．3连接图…………………………………………………………………7
1．1．4真值表……………………………………………………………………7
1．1．5逻辑电路图………………………………………………………………7
1．2 TLP620-4芯片………………………………………………………………8
1．2．1概述………………………………………………………………………8
1．2．2特征………………………………………………………………………8
1．2．3管脚结构…………………………………………………………………8
1．3并入/串出电路图……………………………………………………………8
2．串入/并出………………………………………………………………………9
2．1 UCN5841八位串行输入驱动器………………………………………………9
2．1．1概述………………………………………………………………………9
2．1．2特征………………………………………………………………………9
2．1．3分段功能图表……………………………………………………………9
2．1．4引脚图……………………………………………………………………10
2．1．5 UCN5841典型电路………………………………………………………10
2．2 串入/并出电路图……………………………………………………………11
3．CPU主板………………………………………………………………………11
3．1 mega16………………………………………………………………………11
3．1．1 AVR单片机的概述………………………………………………………11
3．1．2 Atmega16单片机功能简介……………………………………………13
3．1．3 Atmega16结构概览……………………………………………………14
3．1．4引脚说明…………………………………………………………………14
3．2 主板电路图…………………………………………………………………15
四、程序流程图……………………………………………………………………16
五、致谢词…………………………………………………………………………17
六、参考文献………………………………………………………………………17
七、附录……………………………………………………………………………17
1．源程序…………………………………………………………………………17
