画面数据 meaning in Chinese
picture data
Examples
- Plc , robot and cad / cam are called the three major pillars in the modem factory automation . plc , as the head of the three , has become the leading basic automatic equipment in the field of the industry control in the early 1980s " but as a matter of fact , plc being with the lack of friendly man machine interface , rnakes no close relationship between human and machineometimes it even can not be promoted and applied in some fields aiming at the situation mat those imported products are too expensive while domestic products are of rare famous brands , a plc man - machine interface - plc monitor is developedthis paper systemically introduces the developing procedure for the whole system , including how to design hardware and software system . especially emphasizing plc communication protocol . real time message accessing , lcd controller instruction set , definition of data construction for message & tag screens and how to display thern , assignment of internal resource of cpuealization in software among plc & manitor , file format defining a nd download of user data , etcplc monitor will compensate some weakpoints of plc , and extend the application rangeimultanneously enhance the performance of plc and increase the attached value of mechanical machines , undoubtedly it will see hight market prospect
针对人机界面进口产品的高昂价格和国产品牌稀少的这一现状，研制开发了一种plc人机界面? plc监控器。本文系统地介绍了整个系统的开发过程，包括硬件系统、软件系统的设计及实现，重点介绍了plc通信协议，监控器的基本工作原理以及期望实现的功能，监控器电源电路、 sram存储器掉电保护电路、 cpu监控器电路、按键输入电路的设计及按键状态的读入，时钟信息的设定与读取， cpu液晶显示器指令系统，信息画面及标签数据结构的定义及显示方法， cpu内部资源的分配，监控器与plc通信的软件实现，文件格式的定义以及画面数据的下载等。 plc监控器弥补了plc一些方面的不足，可以扩大plc的应用范围，提升机械设备的档次，增加设备的附加价值，具有一定的市场前景。