该文介绍了如何通过以太网实现主机与PLC的高速网络通信，并给出在VC环境下具有报警功能的监控程序。
The paper introduces fast communication between the host and PLC by the Ethernet, and presents an application program with the function of alarm in the VC.
通信程序一方面接收监测数据，将数据进行解析和存储，另一方面接收监控管理软件的命令，发送给现场监控单元。
Communication program on the one hand receives the monitoring data, has data analysis and storage, on the other hand controls management software to receive commands to send to the scene units.
目标机端的监控程序主要是由调试命令执行模块、通信模块、代码控制模块组成。
The monitor programs of the target are composed of executive module of debugging command, communication module and code control module.
由于通信消耗了上位微机大量的系统资源 ，这就影响了其他程序的正常运行 ，甚至可能进一步造成整个监控系统的瓶颈效应。
During communicating courses, many of the host computer's system resources are wasted. This is harmful to other programs, and even could be a chock point of the system.
给出了智能监控变电站控制系统的硬件电路、软件设计程序和通信程序设计。
Gave the intelligence to monitor the transformer substation control system the hardware electric circuit, the software design procedure and the signal procedure design.
总结了燃气输配SCADA系统通信的一般需求，介绍一种通信软件程序设计思路，可以灵活高效地实现燃气输配SCADA中数据的采集和监控管理。
This paper presents common requirements, and ideas to program the communication software in SCADA system meet the demands of flexible and efficient datum.
最后，通过编写一个简单串口通信程序对多个串口进行实时监控，来介绍多线程编程技术在串口通信中的应用。
Finally, in order to introduce the applications of the multithread technology in serial communication, we give a simple program frame of real - time monitor to several serial ports.
作为高频系统监控程序的一个组成部分，本文采用了多线程串口通信的方法实现了对SSRF高频系统激励电平的控制。
As a constituent of the monitor programs, a method of multi-threading serial communication to control the driver low-level of the RF system in SSRF is introduced.
论文中详细叙述了设计的理论依据，介绍了可通信低压开关电器节点和监控PC节点的硬件设计和工作原理以及相关的软件程序设计思路和编制方法。
The principle and theory of our design is discussed chiefly. What is elaborated in the paper is the hardware and software design of intelligent relay and PC monitor node.
接着针对上位机开发了一个监控程序，总体上实现了四大功能：视频播放、串口通信、流量曲线显示、数据库查询。
Then, the author developed a monitor software, which contains four modules: video player, Serial communication, volume curve display, database inquiry.
PC机程序主要由PC机与单片机通信、数据分析处理和过程监控等子程序组成。
The system's software part includes the Data Acquisition program compiled with c, assemble language and the PC program compiled with a sort of Virtual Instrument programming language-LabVIEW.
PC机程序主要由PC机与单片机通信、数据分析处理和过程监控等子程序组成。
The system's software part includes the Data Acquisition program compiled with c, assemble language and the PC program compiled with a sort of Virtual Instrument programming language-LabVIEW.
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