C# 通过网络和三菱的PLC通信
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace PLCTest2
{
public partial class Form1 : Form
{
private AxActUtlTypeLib.AxActUtlType axActUtlType = null;
public Form1()
{
InitializeComponent();
this.axActUtlType = new AxActUtlTypeLib.AxActUtlType();
//((System.ComponentModel.ISupportInitialize)(this.axActUtlType)).BeginInit();
this.Controls.Add(this.axActUtlType); //貌似这个控件必须要加到Controls中，不然就会引发异常。
}
private void btnConn_Click(object sender, EventArgs e)
{
try
{
int iStation = Convert.ToInt32(this.txtStationNo.Text.Trim());
this.axActUtlType.ActLogicalStationNumber = iStation;
this.axActUtlType.ActPassword = this.txtPassword.Text.Trim();
int rtn = this.axActUtlType.Open();
if (rtn == 0)
{
ShowMsg("连接成功！");
this.txtStationNo.Enabled = false;
this.txtPassword.Enabled = false;
this.btnConn.Enabled = false;
}
else
{
ShowMsg("连接失败");
}
}
catch (Exception ex)
{
ShowMsg(ex.Message);
}
}
private void ShowMsg(string msg)
{
string str = string.Format(DateTime.Now.ToString("HH:mm:ss") "_" msg);
this.richTextBox1.SelectionStart = this.richTextBox1.Text.Length;
this.richTextBox1.SelectedText = (str Environment.NewLine);
this.richTextBox1.ScrollToCaret();
}
private void btnRead_Click(object sender, EventArgs e)
{
try
{
string strAddr = this.txtAddr.Text.Trim();
int num = Convert.ToInt32(this.txtNum.Text.Trim());
short[] arr = new short[num];
int rtn = this.axActUtlType.ReadDeviceBlock2(strAddr, num, out arr[0]);
if (rtn == 0)
{
ShowMsg("读取数据成功！");
for (int i = 0; i < arr.Length; i )
{
ShowMsg(string.Format("{0:X4}", arr[i]));
}
}
else
{
ShowMsg("读取数据失败");
}
}
catch (Exception ex)
{
ShowMsg(ex.Message);
}
}
private void btnWrite_Click(object sender, EventArgs e)
{
try
{
string strAddr = this.txtAddr.Text.Trim();
string[] strData = this.txtData.Lines;
int num = strData.Length;
short[] arr = new short[num];
for (int i = 0; i < num; i )
{
arr[i] = Convert.ToInt16(strData[i]);
}
int rtn = this.axActUtlType.WriteDeviceBlock2(strAddr, num, ref arr[0]);
if (rtn == 0)
{
ShowMsg("写入数据成功！");
this.txtNum.Text = num.ToString();
}
else
{
ShowMsg("写入数据失败");
}
}
catch (Exception ex)
{
ShowMsg(ex.Message);
}
}
}
}
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标签： C# 网络 c 通信 的