ModbusPoll 网上找的测试 Modbus协议，比较经典的版本，包含序列号发生器...

资源描述#include #define uchar unsigned char //宏定义 #define uint unsigned int  //宏定义 sbit rs=P2^0; sbit e=P2^1; sbit key1=P2^2; //四个服务人员的按键 sbit key2=P2^3; sbit key3=P2^4; sbit key4=P2^5; sbit shengyinled=P2^6;   //模拟声音 sbit fuwuled=P2^7; uchar hao[50]="0";  //存储当前需要服务的号码 uchar j=0;    //  号码的个数 uchar *quhao=hao; uchar key=0;   //按键值 uchar code table[]="0123456789"; uchar code table1[]="Welcome!"; uchar code table2[]="No.0000->0hao";//用于液晶初始化显示 void delay(uchar z)  //延时函数 {     uchar i,j;     for(i=z;i>0;i--)         for(j=110;j>0;j--); } void wr

若华仪表通讯原程序,这是用VB编的程序与若华登记表进行通讯的-Ruohua original instrument of communication procedures, this is the VB series with the procedures and the registration form Ruohua communication

PCM的好文档 PCM的好文档-PCM good document PCM good documentation of good documentation PCM

gps mgr-gps manager

SSB_AM的解调程序，基于matlab的通信系统仿真系列。供刚接触到matlab的朋友使用-SSB_AM demodulation process, Matlab-based communications system simulation series. For begin to friends using Matlab

高速7号信令解码模块 高速7号信令解码模块-source code for high speed C7 signaling module source code for high speed C7 signaling module

可以接收GPS GPRMC格式报文的数据，重点是QT做的，对这方便的朋友应该有帮助，这里有串口如何接收的处理，并且集成了串口第三方的类，对于需要QT串口的开发者也是有很大帮助的，串口类已经经过很多的测试了，比较好用。

本文在两片采用不同主频的ＰＩＣ单片机（Ａ机时钟频率为６ＭＨｚ，使用口线ＲＢ６；Ｂ机时钟频率为４ＭＨｚ，使用口线ＲＢ４）之间实现异步通讯-In this paper, two different frequency of the PIC Singlechip (A machine clock frequency of 6MHz, the use of the mouth line RB6 B machine clock frequency of 4MHz, the use of the mouth line RB4) asynchronous communication between

对rfc3095协议的更正和补充。-Corrections and Clarifications to RFC 3095

The programming port of all the FP PLC’s support OPEN MEWTOCOL-COM. This is very useful when you want to monitor PLC values/bits or to set PLC values or bits via your COMPUTER. You can use any language such as Basic, C, Pascal, Assembler or even if other suppliers of PLCs can send ASCII strings, they can talk to our PLCs to exchange data.-The programming port of all the FP PLC s support OPEN MEWTOCOL-COM. This is very useful when you want to monitor PLC values/bits or to set PLC values or bits via your COMPUTER. You can use any language such as Basic, C, Pascal, Assembler or even if other suppliers of PLCs can send ASCII strings, they can talk to our PLCs to exchange data.