实例介绍
【实例简介】通过libnodave函数实现与西门子PLC连接并读值
【实例截图】
【实例截图】
【核心代码】
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Windows.Forms;
using OperateXML;
namespace libnodaveTest1
{
public partial class Form1 : Form
{
#region libnodave相关
static libnodave.daveOSserialType fds;
static libnodave.daveInterface di;
static libnodave.daveConnection dc;
static int rack = 0;
static int slot = 0;
#endregion
#region XML相关
static string strPath = "PLCGroup.xml";
static string strID = "";
#endregion
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
#region 得到配置文件
if (File.Exists(strPath))
{
getXmlInfo();
// this.listBox1.Items.Add(slot);
}
else
this.listBox1.Items.Add("请先配置PLC地址");
#endregion
textBox1.Text = "951";
textBox2.Text = "0";
textBox3.Text = "240";
textBox5.Text = "10";
textBox6.Text = "951";
if (textBox7.Text!="")
{
ConnPLC();
}
dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;//选择时可以选择一整行
dataGridView1.ReadOnly = true;//设置控件只能只读
dataGridView1.DefaultCellStyle.SelectionBackColor = Color.Green;//设置选中行显示绿色
}
#region 将XML文件内容绑定到DataGridView控件
/// <summary>
/// 将XML文件内容绑定到DataGridView控件
/// </summary>
private void getXmlInfo()
{
DataSet myds = new DataSet();
myds.ReadXml(strPath);
dataGridView1.DataSource = myds.Tables[0];
textBox7.Text = dataGridView1.CurrentRow.Cells[1].Value.ToString(); //ip
textBox8.Text = dataGridView1.CurrentRow.Cells[0].Value.ToString(); //Name
textBox9.Text = dataGridView1.CurrentRow.Cells[2].Value.ToString(); //Solt
// slot = Convert.ToInt16(textBox9.Text); 这种转换也可以
slot = int.Parse(textBox9.Text);
}
#endregion
private void ConnPLC()
{
int i, a = 0,
j, res,
b = 0,
c = 0;
float d = 0;
//打开一个Socket fds.rfd = openSocket(102, IPaddress_of_CP);
// fds.rfd = libnodave.openSocket(102, "10.228.142.238");
fds.rfd = libnodave.openSocket(102, textBox7.Text.ToString());
fds.wfd = fds.rfd;
if (fds.rfd > 0)
//di = daveNewInterface(rfd, rfd, name, 0, daveProtoISOTCP, daveSpeed187k)
//用的什么协议 di=daveNewInterface(fds, "IF1", localMPI, daveProtoXXX, daveSpeedYYY);
di = new libnodave.daveInterface(fds, "IF1", 0, libnodave.daveProtoISOTCP, libnodave.daveSpeed187k);
di.setTimeout(1000000);
dc = new libnodave.daveConnection(di, 0, rack, slot);
//初始化适配器
res = di.initAdapter();
//dc =daveNewConnection(di, MPI_address, Rack, Slot);
dc = new libnodave.daveConnection(di, 0, rack, slot);
// res=dc.connectPLC();
if (0 == dc.connectPLC())
{
res = dc.readBytes(libnodave.daveFlags, 0, 0, 16, null);
if (res == 0)
{
a = dc.getS32();
b = dc.getS32();
c = dc.getS32();
d = dc.getFloat();
this.listBox1.Items.Add("连接成功");
this.listBox1.Items.Add("FD0: " a);
this.listBox1.Items.Add("FD4: " b);
this.listBox1.Items.Add("FD8: " c);
this.listBox1.Items.Add("FD12: " d);
}
}
else
this.listBox1.Items.Add("error " res " " libnodave.daveStrerror(res));
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
// daveDisconnectPLC(dc)
//daveDisconnectAdapter(di)
//dc.disconnectPLC();
//di.disconnectAdapter();
}
private void btnWriteDB_Click(object sender, EventArgs e)
{
int res = 0;
int i = 0;
byte[] buf = new byte[8];
this.listBox1.Items.Clear();
// buf[0] =Convert.ToByte( MathFunctions.Asc("7"));
if (textBox4.Text.Length == 8)
{
for (i = 0; i < 8; i )
{
// this.listBox1.Items.Add(buf[i].ToString()) ;
//this.listBox1.Items.Add(textBox4.Text.Substring(i, 1));
buf[i] = Convert.ToByte(MathFunctions.Asc(textBox4.Text.Substring(i, 1)));
//this.listBox1.Items.Add(buf[i].ToString());
}
res = dc.writeBytes(libnodave.daveDB, Convert.ToInt32(textBox6.Text), Convert.ToInt32(textBox5.Text), 8, buf);
if (res==0)
{
this.listBox1.Items.Add("写完成");
}
else
this.listBox1.Items.Add("error " res " " libnodave.daveStrerror(res));
}
// this.listBox1.Items.Add(textBox4.Text.Substring(0, 1));
else
//this.listBox1.Items.Clear();
this.listBox1.Items.Add("Err：FIS号长度必须是8位！" );
}
private void 配置ToolStripMenuItem_Click(object sender, EventArgs e)
{
Frm_Main frm_Main = new Frm_Main();
frm_Main.Show();
}
private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
}
private void button3_Click(object sender, EventArgs e)
{
int res;
this.listBox1.Items.Clear();
res =dc.disconnectPLC();
if (res == 0)
{
this.listBox1.Items.Add("断开成功");
di.disconnectAdapter();
}
else
this.listBox1.Items.Add("error " res " " libnodave.daveStrerror(res));
}
private void btnReadDBW_Click_1(object sender, EventArgs e)
{
int res = 0;
string str = "";
//声明字节数组
byte[] buf = new byte[Convert.ToInt32(textBox3.Text)];
//res=daveReadBytes(dc, AREA, area_Number, start_address, length, buffer);
res = dc.readBytes(libnodave.daveDB, Convert.ToInt32(textBox1.Text), Convert.ToInt32(textBox2.Text),
Convert.ToInt32(textBox3.Text), buf);
if (res == 0)
{
this.listBox1.Items.Clear();
for (int i = 0; i < Convert.ToInt32(textBox3.Text); i )
{
this.listBox1.Items.Add("ASCII：" MathFunctions.Chr(buf[i]));
str = MathFunctions.Chr(buf[i]);
}
richTextBox1.Text = str;
btnReadDBW.Enabled = false;
Thread.Sleep(1000);
btnReadDBW.Enabled = true;
}
else
this.listBox1.Items.Add("error " res " " libnodave.daveStrerror(res));
}
private void button2_Click_1(object sender, EventArgs e)
{
this.listBox1.Items.Clear();
this.listBox1.Items.Add("PLC：" textBox8.Text.ToString());
this.listBox1.Items.Add("IP：" textBox7.Text.ToString());
this.listBox1.Items.Add("Slot：" slot);
ConnPLC();
}
private void dataGridView1_CellContentClick_1(object sender, DataGridViewCellEventArgs e)
{
}
private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{
textBox7.Text = dataGridView1.CurrentRow.Cells[1].Value.ToString(); //ip
textBox8.Text = dataGridView1.CurrentRow.Cells[0].Value.ToString(); //Name
textBox9.Text = dataGridView1.CurrentRow.Cells[2].Value.ToString(); //Solt
this.listBox1.Items.Clear();
this.listBox1.Items.Add(textBox7.Text);
if (textBox9.Text != "")
{
slot = int.Parse(textBox9.Text);
this.listBox1.Items.Add(slot);
}
}
private void button1_Click(object sender, EventArgs e)
{
//this.listBox1.Items.Add("十进制数：" MathFunctions.Asc("A"));
// label4.Text = textBox4.Text.Length.ToString ();
getXmlInfo();
}
}
}
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