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PLC程序根据定义的通信协议(即 PLC接收信息 帧的格式和定义 )识别其信息 内容。通过PC 的 COM1与S7-200 PLC的 RS一232端口的串行硬件连接,然后通过对 S7—200系列 PLC进行通信编程 ,就可实现与上位机通信 。-PLC program in accordance with the definition of communication protocols (ie, PLC-frame format to receive information and definitions) to identify its information content. Through the PC s COM1 and S7-200 PLC s RS 1 232 serial port hardware connection, and then through the S7-200 series PLC to communicate programming, you can achieve with the host computer communications.
Date : 2026-01-09 Size : 195kb User :

PLC程序根据定义的通信协议(即 PLC接收信息 帧的格式和定义 )识别其信息 内容。通过PC 的 COM1与S7-200 PLC的 RS一232端口的串行硬件连接,然后通过对 S7—200系列 PLC进行通信编程 ,就可实现与上位机通信 。-PLC program in accordance with the definition of communication protocols (ie, PLC-frame format to receive information and definitions) to identify its information content. Through the PC s COM1 and S7-200 PLC s RS 1 232 serial port hardware connection, and then through the S7-200 series PLC to communicate programming, you can achieve with the host computer communications.
Date : 2026-01-09 Size : 144kb User :

This sample demonstrates creating a Browser Helper Object (BHO), which IE Mobile will load each time it starts up.
Date : 2026-01-09 Size : 11kb User : aliang

采用C++语言编写。可以实现电脑和PDA数据交互功能。涉及设备驱动程序(即本COM库)信息,对不同的设备需设置不同的名称和数值对,这些信息将被写入注册表。-Using C++ language. Computers and PDA the data can be achieved interactive features. Involving a device driver (ie, the COM library) information on the different devices be equipped with a different name and value pairs, such information will be written to the registry.
Date : 2026-01-09 Size : 2.35mb User : xc

利用哈夫曼编码进行通信可以大大提高信道利用率,缩短信息传输时间,降低传输成本,但是,这要求在发送端通过一个编码系统对待传数据预先编码,在接收端将传来的数据进行译码(复原)。对于双工信道(即可以双向传输信息的信道),每端都需要一个完整的编/译码系统。试为这样的信息收发站写一哈夫曼编/译码系统。-Communicate using Huffman coding can greatly improve the channel utilization, reduce transmission time information, reducing transmission costs, but this requires the sender transmission through a coding system for treatment of pre-coded data, at the receiving end will be translated data from the code (recovery). For the duplex channel (ie, two-way transmission of information to the channel), each side needs a complete encoding/decoding system. Test for such messaging station to write a Huffman encoding/decoding system.
Date : 2026-01-09 Size : 2kb User : 陈茂镇

本源码通过声音传通数据,将数据调制二进制PSK(即BPSK)信号从喇叭发出来,另外一个接收程序接收到声音后,便可以解码出来,用到的技术有PSK编码、PSK解码、Windows录音,为了防止传输过程中出现的误,本原码采用rss纠错码,使得通讯更加稳定可靠。-The Source by voice through the data, binary modulation PSK (ie, BPSK) signals emitted the speaker, the other receiving program after receiving the sound, you can decode it, the techniques used have PSK encoding, PSK decoding, Windows Recording in order to prevent accidental transmission occurs, the primitive code using rss error correction code, making communications more reliable.
Date : 2026-01-09 Size : 96kb User : 张小龙

取IE浏览器地址栏内容,很不错的易语言源码,易爱好者可以下载使用()
Date : 2026-01-09 Size : 2kb User : pyzade

浏览器源码,易语言源码,欢迎学习,ie超小浏览器源码奉上()
Date : 2026-01-09 Size : 28kb User : Bonnib

几个IE对话框API应用例程2 0,很不错的易语言源码,适合易语言爱好者使用,()
Date : 2026-01-09 Size : 2kb User : btlqz%26702

完整获取系统版本号与IE版本号,很不错的易语言源码,适合易语言爱好者学习,()
Date : 2026-01-09 Size : 4kb User : unfipite

cclink -ie 通讯手册 ,需要的朋友可以看一看(cclink -ie Communication manual)
Date : 2026-01-09 Size : 29.26mb User : LEONkiller
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