资源列表
plc200-vb
- S7-200 PLC之PPI协议 通过硬件和软件侦听的方法，分析PLC内部固有的PPI通讯协议，然后上位机采用VB编程，遵循PPI通讯协议，读写PLC数据，实现人机操作任务。这种通讯方法，与一般的自由通讯协议相比，省略了PLC的通讯程序编写，只需编写上位机的通讯程序资源 -S7-200 PLC via PPI protocol of the hardware and software methods of listening, analyzing the internal PLC
report
- Here we are able to calculate the transmitted power from the antenna and find the path loss to find the distance covered by the base station.
QQ
- 一个很浅显的说明文档，关于QQ通信原理概述-A plain descr iption of the document, an overview of communication theory on QQ
WINCC
- wincc教程，wincc是西门子开发的监控系统。压缩包中是wincc的相关的教程-wincc tutorial, wincc monitoring system developed by Siemens. Compressed packet is associated wincc tutorial
S7-200_pc_access
- PC-ACCESS 专门为PLC7-200设计的OPC服务器，这是它的简单的教程。希望对大家有帮助。-PC-ACCESS PLC7-200 designed specifically for the OPC server, which is its simple tutorial. I hope to help.
STEP-7-V5.4-programming
- PLC编程手册 希望对大家有帮助 谢谢 联系方式 909914196-PLC programming manual would like to thank everyone help contact 909 914 196
Cooperative-communication
- 一篇北京邮电大学的博士论文。蜂窝网协作通信及相关技术研究 2010。关键词:协作通信，蜂窝网，多入多出，正交频分复用，频率复用系数，中继 -A Beijing University of Posts and Telecommunications doctoral thesis. Cellular communications and related technology research collaboration 2010. Keywords: cooperative communicat
tdoct0242__eng
- PROFIBUS DOC encoder PSM58
1830846a
- Profibus encoder GSD PSM58
China-Mobil-TD-Interview
- TD的内部面试题,对面试有很强的指导作用-a good text for interview
CANBUS_BIT_SETTING
- 对CAN总线波特率相关参数的设定及计算说明-CAN bus baud rate setting and calculation of parameters described
GSM-11.11_cn
- GSM11.11，SIM卡文件介绍的文档，适用于跟SIM卡开关相关的各种产家参考阅读。-SIM card file documents presented for the SIM card switch with a variety of products related to home reference to read.