C# modbus Tcp协议数据抓取和使用
基于Modbus tcp 协议的数据抓取，并解析，源码使用C#开发
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
namespace modbus
{
class Program
{
#region 字节转换为16进制字符
/// <summary>
/// 字节转换为16进制字符
/// </summary>
/// <param name="data"></param>
/// <returns></returns>jiang
static string ByteToHexString(byte[] data)
{
string strTemp = "";
for (int i = 2; i < data.Length; i++)
{
string a = Convert.ToString(data[i], 16).PadLeft(2, '0');
strTemp = strTemp + a;
}
return strTemp.Substring(0, 100);
}
#endregion
#region 16进制字符转换为字节
/// <summary>
/// 16进制字符转换为字节
/// </summary>
/// <param name="hs"></param>
/// <returns></returns>
static byte[] HexString(string hs)
{
hs = hs.Replace(" ", "");
string strTemp = "";
byte[] b = new byte[hs.Length / 2];
for (int i = 0; i < hs.Length / 2; i++)
{
strTemp = hs.Substring(i * 2, 2);
b[i] = Convert.ToByte(strTemp, 16);
}
return b;
}
#endregion
#region 发送、接收报文并返回报文
/// <summary>
/// 發送或接受風機指令
/// </summary>
/// <param name="sendCodeMeg">指令</param>
/// <param name="IpAddress">IP地址</param>
/// <param name="panelIP">面板IP</param>
/// <returns></returns>
static string SendPack(string sendCodeMeg, string IpAddress, int port)
{
IPAddress ip = IPAddress.Parse(IpAddress);
Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
Console.WriteLine("開始發送數據。。。");
clientSocket.Connect(new IPEndPoint(ip, port)); //配置服务器ip和端口
//TcpClient tcpClient = new TcpClient();
Console.WriteLine("服务器连接成功");
}
catch
{
Console.WriteLine("连接服务器失败\n");
return null;
}
try
{
string sendMessage = sendCodeMeg; // "6B 00 00 00 00 06 02 06 05 10 00 01"; //发送到服务端的内容
var sendData = HexString(sendMessage);
string recvStr = null;
int bytes;
try
{
Console.WriteLine("发送报文：{0}", sendMessage);
clientSocket.Send(sendData);//向服务器发送数据
byte[] recvBytes = new byte[1024];
//连接时长500ms
clientSocket.ReceiveTimeout = 5000;
bytes = clientSocket.Receive(recvBytes, recvBytes.Length, 0); //服务端接受返回信息
recvStr += ByteToHexString(recvBytes);
}
catch (Exception ex)
{
Console.WriteLine("出现错误！\n{0}\n\n", ex);
recvStr = null;
}
if (recvStr != null)
{
Console.WriteLine("获取成功！\n 获得数据:{0}\n\n", recvStr);
}
clientSocket.Close();//关闭连接释放资源
//Console.ReadLine();
return recvStr;
}
catch
{
Console.WriteLine("出现错误！\n");
return null;
}
}
#endregion
//主函数
static void Main(string[] args)
{
Console.WriteLine("开始！");
string IP = "10.139.49.61";
int port = 502;
int fnu = 4;
string a = fnu.ToString("x2");
string sendCodeMeg1 = "02 00 00 00 00 06 01 03 01 10 00 02";
string sendCodeMeg2 = "03 00 00 00 00 06 01 03 01 0A 00 02";
string data1 = null;
string data2 = null;
for (int num = 0; num < 5; num++)
{
Console.WriteLine("第{0}次调用Get_Fan函数！\n", num + 1);
data1 = SendPack(sendCodeMeg1, IP, port);
if (data1 != null)
{
break;
}
}
for (int num = 0; num < 5; num++)
{
Console.WriteLine("第{0}次调用Get_Fan函数！\n", num + 1);
data2 = SendPack(sendCodeMeg2, IP, port);
if (data2 != null)
{
break;
}
}
Console.WriteLine("结束");
Console.ReadKey();
}
}
}C# modbus tcp读写数据
1.引用-添加引用-HslCommunication.dll
2.ModBus组件所有的功能类都在 HslCommunication.ModBus命名空间，所以再使用之前先添加
using HslCommunication.ModBus;
using HslCommunication;3.在使用读写功能之前必须先进行实例化：
private ModbusTcpNet busTcpClient = new ModbusTcpNet("192.168.3.45", 502, 0x01); // 站号1上面的实例化指定了服务器的IP地址，端口号（一般都是502），以及自己的站号，允许设置为0-255，后面的两个参数有默认值，在实例化的时候可以省略。
private ModbusTcpNet busTcpClient = new ModbusTcpNet("192.168.3.45"); // 端口号502，站号14.
- 模拟器模拟的是西门子PLC 有四种类型
- 地址以0开头的是可读可写线圈
- 地址以1开头的是只读线圈
- 地址以4开头的是可读可写寄存器(string/float/int/ushort/short等都可以放在这里面)
- 地址以3开头的是只读寄存器
- 我们读取的时候只看后四位0001，就是1，但是库里面是从0开始读的，所以对应的就要减一
5.读取寄存器的一个值
private void button1_Click(object sender, EventArgs e)
{
bool coil100 = busTcpClient.ReadCoil("0").Content; // 读取线圈1的通断
int int100 = busTcpClient.ReadInt32("0").Content; // 读取寄存器1-2的int值
float float100 = busTcpClient.ReadFloat("0").Content; // 读取寄存器1-2的float值
double double100 = busTcpClient.ReadDouble("0").Content; // 读取寄存器1-3的double值
}6.读取寄存器的一组值（一组线圈）（一组float值）
private void button3_Click(object sender, EventArgs e)
{
//读取地址为0，长度为3的线圈数量
OperateResult<bool[]> read = busTcpClient.ReadCoil("0", 3);
if (read.IsSuccess)
{
for (int i = 0; i < read.Content.Length; i++)
{
Console.WriteLine(read.Content[i]);
}
}
else
{
MessageBox.Show(read.ToMessageShowString());
}
//读取(一组)寄存器数据
OperateResult<float[]> result = busTcpClient.ReadFloat("0", 4);
if (result.IsSuccess)
{
//Console.WriteLine(result.Content[0]);
//Console.WriteLine(result.Content[1]);
//Console.WriteLine(result.Content[2]);
for (int i = 0; i < result.Content.Length; i++)
{
Console.WriteLine(result.Content[i]);
}
}
else
{
MessageBox.Show(result.ToMessageShowString());
}
}7.写入一个(线圈)（寄存器）
private void button2_Click(object sender, EventArgs e)
{
busTcpClient.WriteCoil("0", true);// 写入线圈1为通
busTcpClient.Write("0", 123.456);// 写入寄存器1-2为123.456
}8.批量写入一组(线圈)（寄存器）
private void button9_Click(object sender, EventArgs e)
{
//写入一组线圈
bool[] value = new bool[] { true, true, false, true, false };
busTcpClient.WriteCoil("0", value);
}
private void button10_Click(object sender, EventArgs e)
{
//写入一组寄存器
float[] value = new float[] {1.1F, 1.2F, 1.3F, 1.4F, 1.5F };
busTcpClient.Write("0", value);
}
-
以上为个人经验，希望能给大家一个参考，也希望大家多多支持编程网。
