CIP批量写入数据怎么使用C++不适用其它第三方库的情况下在Windows下实现代码示例
时间: 2023-12-03 13:47:31 浏览: 29
CIP(Common Industrial Protocol)是一种工业通信协议,主要应用于工业自动化领域。在 Windows 平台下,可以使用 Winsock API 实现 CIP 的批量写入数据操作。下面是一个简单的 C++ 代码示例:
```c++
#include <winsock2.h>
#include <ws2tcpip.h>
#include <iostream>
#pragma comment(lib, "Ws2_32.lib")
// CIP 批量写入数据
void CIP_BatchWrite(int node, int start, int count, int data[])
{
// 创建 socket
SOCKET s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (s == INVALID_SOCKET) {
std::cerr << "socket() failed with error: " << WSAGetLastError() << std::endl;
return;
}
// 连接到 CIP 设备
sockaddr_in addr = { 0 };
addr.sin_family = AF_INET;
addr.sin_port = htons(0xAF12); // CIP 的默认端口号为 0xAF12
addr.sin_addr.s_addr = inet_addr("192.168.0.1"); // CIP 设备的 IP 地址
if (connect(s, (sockaddr*)&addr, sizeof(addr)) == SOCKET_ERROR) {
std::cerr << "connect() failed with error: " << WSAGetLastError() << std::endl;
closesocket(s);
return;
}
// 构造 CIP 的写入请求数据包
unsigned char packet[1024] = { 0 };
packet[0] = 0x6F; // CIP Command: Write
packet[1] = 0x00; // CIP Service: Unconnected Send
packet[2] = 0x02; // CIP Path: 2 items
packet[3] = 0x20; // CIP Class ID: 0x20 (Class 0x0A, Instance 0x01)
packet[4] = 0x0A; // CIP Instance ID: 0x0A (Class 0x0A, Instance 0x01)
packet[5] = 0x24; // CIP Class Attribute: 0x24 (Attribute ID 0x03)
packet[6] = 0x03; // CIP Data Type: Array of INT
packet[7] = count & 0xFF; // CIP Number of Elements (low byte)
packet[8] = (count >> 8) & 0xFF; // CIP Number of Elements (high byte)
packet[9] = start & 0xFF; // CIP Starting Element (low byte)
packet[10] = (start >> 8) & 0xFF; // CIP Starting Element (high byte)
for (int i = 0; i < count; i++) {
packet[11 + i * 2] = data[i] & 0xFF; // CIP Data (low byte)
packet[12 + i * 2] = (data[i] >> 8) & 0xFF; // CIP Data (high byte)
}
// 发送请求数据包
if (send(s, (char*)packet, 11 + count * 2, 0) == SOCKET_ERROR) {
std::cerr << "send() failed with error: " << WSAGetLastError() << std::endl;
closesocket(s);
return;
}
// 接收响应数据包
char response[1024] = { 0 };
int len = recv(s, response, sizeof(response), 0);
if (len == SOCKET_ERROR) {
std::cerr << "recv() failed with error: " << WSAGetLastError() << std::endl;
closesocket(s);
return;
}
// 解析响应数据包
if (len >= 2 && response[0] == 0x7F && response[1] == 0x00) {
std::cout << "CIP BatchWrite succeeded" << std::endl;
} else {
std::cerr << "CIP BatchWrite failed" << std::endl;
}
// 关闭 socket
closesocket(s);
}
int main()
{
// 执行 CIP 批量写入数据
int data[] = { 100, 200, 300 };
CIP_BatchWrite(1, 10, 3, data);
return 0;
}
```
需要注意的是,上述代码中的 IP 地址、起始地址、数据个数和数据值都需要根据实际情况进行修改。另外,为了使用 Winsock API,需要在代码中包含 <winsock2.h> 和 <ws2tcpip.h> 头文件,并且链接 Ws2_32.lib 库。