搜索资源列表
Siemens-PPI
- Siemens PPI协议分析 西门子S7-200 PLC之间或者PLC与PC之间通信有很多种方式:自由口,PPI方式,MPI方式,Profibus方式。使用自由口方式进行编程时,在上位机和PLC中都要编写数据通信程序。使用PPI协议进行通信时,PLC可以不用编程,而且可读写所有数据区,快捷方便。但是西门子公司没有公布PPI协议的格式。用户如果想使用PPI协议监控,必须购买其监控产品或第三方厂家的组态软件。这样给用户自主开发带来一定困难,特别是自行开发的现场设备就不能通过PPI协议接入PLC
rs485
- 485通讯资料 485通讯中一个串口可以控制多少个设备的问题是与该485网络中的电气特性和协议特性所决定的。 -485 serial data 485 can be controlled in a number of equipment problems with the 485 network and protocol characteristics of the electrical properties determined.
PCchuankou
- PC串口通讯,里面有C程序和仿真图,可以用proteus和keil联调-PC serial communication, which has C program and simulation diagram, you can use proteus and keil FBI
CommPPT
- 有关于串口通讯的文档以及PPT,需要的可以直接下载-Documentation, and PPT on serial communication can directly download
Serial-communication-programming
- 串行口是计算机一种常用的接口,具有连接线少,通讯简单,得到广泛的使用。常用的串口是RS-232-C接口. 由于Linux引入了设备文件的概念,读写串口可以像读写普通文件一样进行操作,非常简单,方便。-The serial port is a common computer interface, with connecting lines is less simple communication, is widely used. Used serial RS-232-C interface.
main
- CAN开发板-串口通讯,波特率设置9600,检验位N,数据位8,停止位1.数据16进制发送,16进制显示。-CAN development board- serial communication, the baud rate is set to 9600, test bit N, 8 data bits, stop bits 1 data in hexadecimal send hexadecimal display.
VB-with-_RS-232_-serial-
- 最新VB上位机参考书籍,主要讲述的是串口通讯,详尽丰富的例子,通俗易懂,可以缩短开发时间,也是新手学习的好工具。-Last VB PC reference books, mainly about serial communication, detailed examples of rich, easy to understand, you can shorten development time, but also a good tool for beginners to learn.
tongxun
- 串口通讯和数据采集系统,你可以参考例程继续开发Serial communication and data acquisition system, you can refer to the routine continues to develop-Serial communication and data acquisition system, you can refer to the routine continues to develop