工控超实用的OPC客户端上位机编写

2、软件功能演示：

3、部分代码如下：

/// <summary>

/// 根据IP地址获取DNS主机名

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void button1_Click(object sender, EventArgs e)

{

try

{

IPHostEntry iPHostEntry = Dns.GetHostEntry(textBox1.Text);

textBox2.Text = iPHostEntry.HostName;

}

catch(Exception ex)

{

MessageBox.Show(ex.ToString());

}

}

/// <summary>

/// 获取OPC服务器

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void button2_Click(object sender, EventArgs e)

{

try

{

if (textBox2.Text != "")

{

kepServer = new OPCServer();

//获取指定DNS主机名上的OPC服务器

object serverList = kepServer.GetOPCServers(textBox2.Text);

comboBox1.Items.Clear();

foreach (string serverName in (Array)serverList)

{

if (!comboBox1.Items.Contains(serverName))

{

comboBox1.Items.Add(serverName);

}

}

}

else

{

MessageBox.Show("请先获取DNS主机名");

}

}

catch(Exception ex)

{

MessageBox.Show(ex.ToString());

}

}

/// <summary>

/// 连接OPC服务器

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void button3_Click(object sender, EventArgs e)

{

listBox1.Items.Clear();

bool connFlag= ConnectServer(comboBox1.Text,textBox2.Text);

if(connFlag==true)

{

button3.Text = "已连接OPC";

}

GetOPC_Info();

kepBrowser = kepServer.CreateBrowser();

CreateKepBrowser(kepBrowser);

CreateGroup();

}

/// <summary>

/// 连接OPC服务器，并返回是否连接成功

/// </summary>

/// <param name="serverName"></param>

/// <param name="ServerNode"></param>

/// <returns></returns>

public bool ConnectServer(string serverName,String ServerNode)

{

try

{

kepServer.Connect(serverName, ServerNode);

//判断OPC服务器的连接状态

if (kepServer.ServerState == (int)OPCServerState.OPCRunning)

{

toolStripStatusLabel1.Text = "已连接到服务器：" + kepServer.ServerName + " ";

return true;

}

else

{

toolStripStatusLabel1.Text= "状态：" + kepServer.ServerState.ToString() + " ";

return false;

}

}

catch

{

return false;

}

}

4、完整代码较长，如需要完整代码可先关注并留言，然后私信我发送“OPCDA”即可自动回复，如果能帮助到你，感谢你的关注订阅，可以第一时间接收后续更新。