台达DVP-SE的串口通信
时间: 2023-09-16 21:11:57 浏览: 75
DVP-SE是台达电子推出的一款紧凑型PLC,支持多种通信方式,包括串口通信。以下是一个简单的DVP-SE串口通信的程序示例,可以实现PC端和DVP-SE之间的数据传输:
```
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
#define BUF_SIZE 1024
int main(int argc, char* argv[]) {
HANDLE hCom;
DCB dcb;
COMMTIMEOUTS timeouts;
char* portName = "COM1"; // 串口号
int baudrate = 9600; // 波特率
int byteSize = 8; // 数据位
int stopBits = ONESTOPBIT; // 停止位
int parity = NOPARITY; // 校验位
DWORD bytesWritten, bytesRead;
char writeBuf[BUF_SIZE] = "Hello DVP-SE";
char readBuf[BUF_SIZE];
// 打开串口
hCom = CreateFile(portName, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
if (hCom == INVALID_HANDLE_VALUE) {
printf("Failed to open port %s\n", portName);
return -1;
}
// 配置串口参数
memset(&dcb, 0, sizeof(dcb));
dcb.DCBlength = sizeof(dcb);
if (!GetCommState(hCom, &dcb)) {
printf("Failed to get comm state\n");
CloseHandle(hCom);
return -1;
}
dcb.BaudRate = baudrate;
dcb.ByteSize = byteSize;
dcb.StopBits = stopBits;
dcb.Parity = parity;
if (!SetCommState(hCom, &dcb)) {
printf("Failed to set comm state\n");
CloseHandle(hCom);
return -1;
}
// 配置读写超时时间
timeouts.ReadIntervalTimeout = 50;
timeouts.ReadTotalTimeoutMultiplier = 10;
timeouts.ReadTotalTimeoutConstant = 100;
timeouts.WriteTotalTimeoutMultiplier = 10;
timeouts.WriteTotalTimeoutConstant = 100;
if (!SetCommTimeouts(hCom, &timeouts)) {
printf("Failed to set comm timeouts\n");
CloseHandle(hCom);
return -1;
}
// 发送数据
if (!WriteFile(hCom, writeBuf, strlen(writeBuf), &bytesWritten, NULL)) {
printf("Failed to write data\n");
CloseHandle(hCom);
return -1;
}
// 接收数据
if (!ReadFile(hCom, readBuf, BUF_SIZE, &bytesRead, NULL)) {
printf("Failed to read data\n");
CloseHandle(hCom);
return -1;
}
readBuf[bytesRead] = '\0';
printf("Received data: %s\n", readBuf);
// 关闭串口
CloseHandle(hCom);
return 0;
}
```
需要注意的是,DVP-SE支持多种通信协议和接口类型,具体的通信方式需要根据实际情况进行选择和配置。另外,DVP-SE的PLC程序中也需要相应的数据接收和发送代码,以实现与PC端的通信。